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4160 lines
100 KiB
4160 lines
100 KiB
package Imager;
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use strict;
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS %formats $DEBUG %filters %DSOs $ERRSTR $fontstate %OPCODES $I2P $FORMATGUESS $warn_obsolete);
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use IO::File;
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use Imager::Color;
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use Imager::Font;
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@EXPORT_OK = qw(
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init
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init_log
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DSO_open
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DSO_close
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DSO_funclist
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DSO_call
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load_plugin
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unload_plugin
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i_list_formats
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i_has_format
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i_color_new
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i_color_set
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i_color_info
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i_img_empty
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i_img_empty_ch
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i_img_exorcise
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i_img_destroy
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i_img_info
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i_img_setmask
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i_img_getmask
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i_line
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i_line_aa
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i_box
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i_box_filled
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i_arc
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i_circle_aa
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i_bezier_multi
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i_poly_aa
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i_poly_aa_cfill
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i_copyto
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i_rubthru
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i_scaleaxis
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i_scale_nn
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i_haar
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i_count_colors
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i_gaussian
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i_conv
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i_convert
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i_map
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i_img_diff
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i_init_fonts
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i_t1_new
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i_t1_destroy
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i_t1_set_aa
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i_t1_cp
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i_t1_text
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i_t1_bbox
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i_tt_set_aa
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i_tt_cp
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i_tt_text
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i_tt_bbox
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i_readjpeg_wiol
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i_writejpeg_wiol
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i_readtiff_wiol
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i_writetiff_wiol
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i_writetiff_wiol_faxable
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i_readpng_wiol
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i_writepng_wiol
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i_readgif
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i_readgif_wiol
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i_readgif_callback
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i_writegif
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i_writegifmc
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i_writegif_gen
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i_writegif_callback
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i_readpnm_wiol
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i_writeppm_wiol
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i_readraw_wiol
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i_writeraw_wiol
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i_contrast
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i_hardinvert
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i_noise
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i_bumpmap
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i_postlevels
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i_mosaic
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i_watermark
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malloc_state
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list_formats
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i_gifquant
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newfont
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newcolor
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newcolour
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NC
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NF
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);
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@EXPORT=qw(
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init_log
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i_list_formats
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i_has_format
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malloc_state
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i_color_new
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i_img_empty
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i_img_empty_ch
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);
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%EXPORT_TAGS=
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(handy => [qw(
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newfont
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newcolor
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NF
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NC
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)],
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all => [@EXPORT_OK],
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default => [qw(
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load_plugin
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unload_plugin
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)]);
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# registered file readers
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my %readers;
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# registered file writers
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my %writers;
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# modules we attempted to autoload
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my %attempted_to_load;
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BEGIN {
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require Exporter;
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@ISA = qw(Exporter);
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$VERSION = '0.60';
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eval {
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require XSLoader;
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XSLoader::load(Imager => $VERSION);
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1;
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} or do {
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require DynaLoader;
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push @ISA, 'DynaLoader';
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bootstrap Imager $VERSION;
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}
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}
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BEGIN {
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i_init_fonts(); # Initialize font engines
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Imager::Font::__init();
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for(i_list_formats()) { $formats{$_}++; }
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if ($formats{'t1'}) {
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i_t1_set_aa(1);
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}
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if (!$formats{'t1'} and !$formats{'tt'}
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&& !$formats{'ft2'} && !$formats{'w32'}) {
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$fontstate='no font support';
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}
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%OPCODES=(Add=>[0],Sub=>[1],Mult=>[2],Div=>[3],Parm=>[4],'sin'=>[5],'cos'=>[6],'x'=>[4,0],'y'=>[4,1]);
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$DEBUG=0;
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# the members of the subhashes under %filters are:
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# callseq - a list of the parameters to the underlying filter in the
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# order they are passed
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# callsub - a code ref that takes a named parameter list and calls the
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# underlying filter
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# defaults - a hash of default values
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# names - defines names for value of given parameters so if the names
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# field is foo=> { bar=>1 }, and the user supplies "bar" as the
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# foo parameter, the filter will receive 1 for the foo
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# parameter
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$filters{contrast}={
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callseq => ['image','intensity'],
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callsub => sub { my %hsh=@_; i_contrast($hsh{image},$hsh{intensity}); }
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};
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$filters{noise} ={
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callseq => ['image', 'amount', 'subtype'],
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defaults => { amount=>3,subtype=>0 },
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callsub => sub { my %hsh=@_; i_noise($hsh{image},$hsh{amount},$hsh{subtype}); }
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};
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$filters{hardinvert} ={
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callseq => ['image'],
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defaults => { },
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callsub => sub { my %hsh=@_; i_hardinvert($hsh{image}); }
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};
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$filters{autolevels} ={
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callseq => ['image','lsat','usat','skew'],
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defaults => { lsat=>0.1,usat=>0.1,skew=>0.0 },
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callsub => sub { my %hsh=@_; i_autolevels($hsh{image},$hsh{lsat},$hsh{usat},$hsh{skew}); }
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};
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$filters{turbnoise} ={
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callseq => ['image'],
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defaults => { xo=>0.0,yo=>0.0,scale=>10.0 },
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callsub => sub { my %hsh=@_; i_turbnoise($hsh{image},$hsh{xo},$hsh{yo},$hsh{scale}); }
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};
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$filters{radnoise} ={
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callseq => ['image'],
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defaults => { xo=>100,yo=>100,ascale=>17.0,rscale=>0.02 },
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callsub => sub { my %hsh=@_; i_radnoise($hsh{image},$hsh{xo},$hsh{yo},$hsh{rscale},$hsh{ascale}); }
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};
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$filters{conv} ={
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callseq => ['image', 'coef'],
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defaults => { },
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callsub => sub { my %hsh=@_; i_conv($hsh{image},$hsh{coef}); }
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};
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$filters{gradgen} =
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{
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callseq => ['image', 'xo', 'yo', 'colors', 'dist'],
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defaults => { dist => 0 },
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callsub =>
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sub {
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my %hsh=@_;
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my @colors = @{$hsh{colors}};
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$_ = _color($_)
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for @colors;
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i_gradgen($hsh{image}, $hsh{xo}, $hsh{yo}, \@colors, $hsh{dist});
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}
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};
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$filters{nearest_color} =
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{
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callseq => ['image', 'xo', 'yo', 'colors', 'dist'],
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defaults => { },
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callsub =>
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sub {
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my %hsh=@_;
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# make sure the segments are specified with colors
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my @colors;
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for my $color (@{$hsh{colors}}) {
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my $new_color = _color($color)
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or die $Imager::ERRSTR."\n";
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push @colors, $new_color;
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}
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i_nearest_color($hsh{image}, $hsh{xo}, $hsh{yo}, \@colors,
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$hsh{dist})
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or die Imager->_error_as_msg() . "\n";
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},
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};
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$filters{gaussian} = {
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callseq => [ 'image', 'stddev' ],
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defaults => { },
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callsub => sub { my %hsh = @_; i_gaussian($hsh{image}, $hsh{stddev}); },
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};
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$filters{mosaic} =
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{
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callseq => [ qw(image size) ],
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defaults => { size => 20 },
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callsub => sub { my %hsh = @_; i_mosaic($hsh{image}, $hsh{size}) },
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};
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$filters{bumpmap} =
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{
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callseq => [ qw(image bump elevation lightx lighty st) ],
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defaults => { elevation=>0, st=> 2 },
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callsub => sub {
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my %hsh = @_;
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i_bumpmap($hsh{image}, $hsh{bump}{IMG}, $hsh{elevation},
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$hsh{lightx}, $hsh{lighty}, $hsh{st});
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},
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};
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$filters{bumpmap_complex} =
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{
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callseq => [ qw(image bump channel tx ty Lx Ly Lz cd cs n Ia Il Is) ],
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defaults => {
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channel => 0,
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tx => 0,
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ty => 0,
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Lx => 0.2,
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Ly => 0.4,
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Lz => -1.0,
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cd => 1.0,
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cs => 40,
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n => 1.3,
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Ia => Imager::Color->new(rgb=>[0,0,0]),
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Il => Imager::Color->new(rgb=>[255,255,255]),
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Is => Imager::Color->new(rgb=>[255,255,255]),
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},
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callsub => sub {
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my %hsh = @_;
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i_bumpmap_complex($hsh{image}, $hsh{bump}{IMG}, $hsh{channel},
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$hsh{tx}, $hsh{ty}, $hsh{Lx}, $hsh{Ly}, $hsh{Lz},
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$hsh{cd}, $hsh{cs}, $hsh{n}, $hsh{Ia}, $hsh{Il},
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$hsh{Is});
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},
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};
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$filters{postlevels} =
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{
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callseq => [ qw(image levels) ],
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defaults => { levels => 10 },
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callsub => sub { my %hsh = @_; i_postlevels($hsh{image}, $hsh{levels}); },
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};
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$filters{watermark} =
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{
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callseq => [ qw(image wmark tx ty pixdiff) ],
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defaults => { pixdiff=>10, tx=>0, ty=>0 },
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callsub =>
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sub {
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my %hsh = @_;
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i_watermark($hsh{image}, $hsh{wmark}{IMG}, $hsh{tx}, $hsh{ty},
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$hsh{pixdiff});
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},
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};
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$filters{fountain} =
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{
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callseq => [ qw(image xa ya xb yb ftype repeat combine super_sample ssample_param segments) ],
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names => {
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ftype => { linear => 0,
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bilinear => 1,
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radial => 2,
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radial_square => 3,
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revolution => 4,
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conical => 5 },
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repeat => { none => 0,
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sawtooth => 1,
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triangle => 2,
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saw_both => 3,
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tri_both => 4,
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},
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super_sample => {
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none => 0,
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grid => 1,
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random => 2,
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circle => 3,
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},
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combine => {
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none => 0,
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normal => 1,
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multiply => 2, mult => 2,
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dissolve => 3,
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add => 4,
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subtract => 5, 'sub' => 5,
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diff => 6,
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lighten => 7,
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darken => 8,
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hue => 9,
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sat => 10,
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value => 11,
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color => 12,
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},
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},
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defaults => { ftype => 0, repeat => 0, combine => 0,
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super_sample => 0, ssample_param => 4,
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segments=>[
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[ 0, 0.5, 1,
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Imager::Color->new(0,0,0),
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Imager::Color->new(255, 255, 255),
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0, 0,
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],
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],
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},
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callsub =>
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sub {
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my %hsh = @_;
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# make sure the segments are specified with colors
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my @segments;
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for my $segment (@{$hsh{segments}}) {
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my @new_segment = @$segment;
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$_ = _color($_) or die $Imager::ERRSTR."\n" for @new_segment[3,4];
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push @segments, \@new_segment;
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}
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i_fountain($hsh{image}, $hsh{xa}, $hsh{ya}, $hsh{xb}, $hsh{yb},
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$hsh{ftype}, $hsh{repeat}, $hsh{combine}, $hsh{super_sample},
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$hsh{ssample_param}, \@segments)
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or die Imager->_error_as_msg() . "\n";
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},
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};
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$filters{unsharpmask} =
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{
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callseq => [ qw(image stddev scale) ],
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defaults => { stddev=>2.0, scale=>1.0 },
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callsub =>
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sub {
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my %hsh = @_;
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i_unsharp_mask($hsh{image}, $hsh{stddev}, $hsh{scale});
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},
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};
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$FORMATGUESS=\&def_guess_type;
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$warn_obsolete = 1;
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}
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#
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# Non methods
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#
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# initlize Imager
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# NOTE: this might be moved to an import override later on
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#sub import {
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# my $pack = shift;
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# (look through @_ for special tags, process, and remove them);
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# use Data::Dumper;
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# print Dumper($pack);
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# print Dumper(@_);
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#}
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sub init_log {
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i_init_log($_[0],$_[1]);
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i_log_entry("Imager $VERSION starting\n", 1);
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}
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sub init {
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my %parms=(loglevel=>1,@_);
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if ($parms{'log'}) {
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init_log($parms{'log'},$parms{'loglevel'});
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}
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if (exists $parms{'warn_obsolete'}) {
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$warn_obsolete = $parms{'warn_obsolete'};
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}
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# if ($parms{T1LIB_CONFIG}) { $ENV{T1LIB_CONFIG}=$parms{T1LIB_CONFIG}; }
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# if ( $ENV{T1LIB_CONFIG} and ( $fontstate eq 'missing conf' )) {
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# i_init_fonts();
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# $fontstate='ok';
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# }
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if (exists $parms{'t1log'}) {
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i_init_fonts($parms{'t1log'});
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}
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}
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END {
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if ($DEBUG) {
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print "shutdown code\n";
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# for(keys %instances) { $instances{$_}->DESTROY(); }
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malloc_state(); # how do decide if this should be used? -- store something from the import
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print "Imager exiting\n";
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}
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}
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# Load a filter plugin
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sub load_plugin {
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my ($filename)=@_;
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my $i;
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my ($DSO_handle,$str)=DSO_open($filename);
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if (!defined($DSO_handle)) { $Imager::ERRSTR="Couldn't load plugin '$filename'\n"; return undef; }
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my %funcs=DSO_funclist($DSO_handle);
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if ($DEBUG) { print "loading module $filename\n"; $i=0; for(keys %funcs) { printf(" %2d: %s\n",$i++,$_); } }
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$i=0;
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for(keys %funcs) { if ($filters{$_}) { $ERRSTR="filter '$_' already exists\n"; DSO_close($DSO_handle); return undef; } }
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$DSOs{$filename}=[$DSO_handle,\%funcs];
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for(keys %funcs) {
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my $evstr="\$filters{'".$_."'}={".$funcs{$_}.'};';
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$DEBUG && print "eval string:\n",$evstr,"\n";
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eval $evstr;
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print $@ if $@;
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}
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return 1;
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}
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# Unload a plugin
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sub unload_plugin {
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my ($filename)=@_;
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if (!$DSOs{$filename}) { $ERRSTR="plugin '$filename' not loaded."; return undef; }
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my ($DSO_handle,$funcref)=@{$DSOs{$filename}};
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for(keys %{$funcref}) {
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delete $filters{$_};
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$DEBUG && print "unloading: $_\n";
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}
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my $rc=DSO_close($DSO_handle);
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if (!defined($rc)) { $ERRSTR="unable to unload plugin '$filename'."; return undef; }
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return 1;
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}
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# take the results of i_error() and make a message out of it
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sub _error_as_msg {
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return join(": ", map $_->[0], i_errors());
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}
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# this function tries to DWIM for color parameters
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# color objects are used as is
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# simple scalars are simply treated as single parameters to Imager::Color->new
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# hashrefs are treated as named argument lists to Imager::Color->new
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# arrayrefs are treated as list arguments to Imager::Color->new iff any
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# parameter is > 1
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# other arrayrefs are treated as list arguments to Imager::Color::Float
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sub _color {
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my $arg = shift;
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# perl 5.6.0 seems to do weird things to $arg if we don't make an
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# explicitly stringified copy
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# I vaguely remember a bug on this on p5p, but couldn't find it
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# through bugs.perl.org (I had trouble getting it to find any bugs)
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my $copy = $arg . "";
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my $result;
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if (ref $arg) {
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if (UNIVERSAL::isa($arg, "Imager::Color")
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|| UNIVERSAL::isa($arg, "Imager::Color::Float")) {
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$result = $arg;
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}
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else {
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if ($copy =~ /^HASH\(/) {
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$result = Imager::Color->new(%$arg);
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}
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elsif ($copy =~ /^ARRAY\(/) {
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$result = Imager::Color->new(@$arg);
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}
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else {
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$Imager::ERRSTR = "Not a color";
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
# assume Imager::Color::new knows how to handle it
|
|
$result = Imager::Color->new($arg);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
sub _valid_image {
|
|
my ($self) = @_;
|
|
|
|
$self->{IMG} and return 1;
|
|
|
|
$self->_set_error('empty input image');
|
|
|
|
return;
|
|
}
|
|
|
|
#
|
|
# Methods to be called on objects.
|
|
#
|
|
|
|
# Create a new Imager object takes very few parameters.
|
|
# usually you call this method and then call open from
|
|
# the resulting object
|
|
|
|
sub new {
|
|
my $class = shift;
|
|
my $self ={};
|
|
my %hsh=@_;
|
|
bless $self,$class;
|
|
$self->{IMG}=undef; # Just to indicate what exists
|
|
$self->{ERRSTR}=undef; #
|
|
$self->{DEBUG}=$DEBUG;
|
|
$self->{DEBUG} && print "Initialized Imager\n";
|
|
if (defined $hsh{xsize} && defined $hsh{ysize}) {
|
|
unless ($self->img_set(%hsh)) {
|
|
$Imager::ERRSTR = $self->{ERRSTR};
|
|
return;
|
|
}
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
# Copy an entire image with no changes
|
|
# - if an image has magic the copy of it will not be magical
|
|
|
|
sub copy {
|
|
my $self = shift;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "copy() called in void context - copy() returns the copied image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
my $newcopy=Imager->new();
|
|
$newcopy->{IMG} = i_copy($self->{IMG});
|
|
return $newcopy;
|
|
}
|
|
|
|
# Paste a region
|
|
|
|
sub paste {
|
|
my $self = shift;
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->_set_error('empty input image');
|
|
return;
|
|
}
|
|
my %input=(left=>0, top=>0, src_minx => 0, src_miny => 0, @_);
|
|
my $src = $input{img} || $input{src};
|
|
unless($src) {
|
|
$self->_set_error("no source image");
|
|
return;
|
|
}
|
|
$input{left}=0 if $input{left} <= 0;
|
|
$input{top}=0 if $input{top} <= 0;
|
|
|
|
my($r,$b)=i_img_info($src->{IMG});
|
|
my ($src_left, $src_top) = @input{qw/src_minx src_miny/};
|
|
my ($src_right, $src_bottom);
|
|
if ($input{src_coords}) {
|
|
($src_left, $src_top, $src_right, $src_bottom) = @{$input{src_coords}}
|
|
}
|
|
else {
|
|
if (defined $input{src_maxx}) {
|
|
$src_right = $input{src_maxx};
|
|
}
|
|
elsif (defined $input{width}) {
|
|
if ($input{width} <= 0) {
|
|
$self->_set_error("paste: width must me positive");
|
|
return;
|
|
}
|
|
$src_right = $src_left + $input{width};
|
|
}
|
|
else {
|
|
$src_right = $r;
|
|
}
|
|
if (defined $input{src_maxy}) {
|
|
$src_bottom = $input{src_maxy};
|
|
}
|
|
elsif (defined $input{height}) {
|
|
if ($input{height} < 0) {
|
|
$self->_set_error("paste: height must be positive");
|
|
return;
|
|
}
|
|
$src_bottom = $src_top + $input{height};
|
|
}
|
|
else {
|
|
$src_bottom = $b;
|
|
}
|
|
}
|
|
|
|
$src_right > $r and $src_right = $r;
|
|
$src_bottom > $b and $src_bottom = $b;
|
|
|
|
if ($src_right <= $src_left
|
|
|| $src_bottom < $src_top) {
|
|
$self->_set_error("nothing to paste");
|
|
return;
|
|
}
|
|
|
|
i_copyto($self->{IMG}, $src->{IMG},
|
|
$src_left, $src_top, $src_right, $src_bottom,
|
|
$input{left}, $input{top});
|
|
|
|
return $self; # What should go here??
|
|
}
|
|
|
|
# Crop an image - i.e. return a new image that is smaller
|
|
|
|
sub crop {
|
|
my $self=shift;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "crop() called in void context - crop() returns the cropped image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
my %hsh=@_;
|
|
|
|
my ($w, $h, $l, $r, $b, $t) =
|
|
@hsh{qw(width height left right bottom top)};
|
|
|
|
# work through the various possibilities
|
|
if (defined $l) {
|
|
if (defined $w) {
|
|
$r = $l + $w;
|
|
}
|
|
elsif (!defined $r) {
|
|
$r = $self->getwidth;
|
|
}
|
|
}
|
|
elsif (defined $r) {
|
|
if (defined $w) {
|
|
$l = $r - $w;
|
|
}
|
|
else {
|
|
$l = 0;
|
|
}
|
|
}
|
|
elsif (defined $w) {
|
|
$l = int(0.5+($self->getwidth()-$w)/2);
|
|
$r = $l + $w;
|
|
}
|
|
else {
|
|
$l = 0;
|
|
$r = $self->getwidth;
|
|
}
|
|
if (defined $t) {
|
|
if (defined $h) {
|
|
$b = $t + $h;
|
|
}
|
|
elsif (!defined $b) {
|
|
$b = $self->getheight;
|
|
}
|
|
}
|
|
elsif (defined $b) {
|
|
if (defined $h) {
|
|
$t = $b - $h;
|
|
}
|
|
else {
|
|
$t = 0;
|
|
}
|
|
}
|
|
elsif (defined $h) {
|
|
$t=int(0.5+($self->getheight()-$h)/2);
|
|
$b=$t+$h;
|
|
}
|
|
else {
|
|
$t = 0;
|
|
$b = $self->getheight;
|
|
}
|
|
|
|
($l,$r)=($r,$l) if $l>$r;
|
|
($t,$b)=($b,$t) if $t>$b;
|
|
|
|
$l < 0 and $l = 0;
|
|
$r > $self->getwidth and $r = $self->getwidth;
|
|
$t < 0 and $t = 0;
|
|
$b > $self->getheight and $b = $self->getheight;
|
|
|
|
if ($l == $r || $t == $b) {
|
|
$self->_set_error("resulting image would have no content");
|
|
return;
|
|
}
|
|
if( $r < $l or $b < $t ) {
|
|
$self->_set_error("attempting to crop outside of the image");
|
|
return;
|
|
}
|
|
my $dst = $self->_sametype(xsize=>$r-$l, ysize=>$b-$t);
|
|
|
|
i_copyto($dst->{IMG},$self->{IMG},$l,$t,$r,$b,0,0);
|
|
return $dst;
|
|
}
|
|
|
|
sub _sametype {
|
|
my ($self, %opts) = @_;
|
|
|
|
$self->{IMG} or return $self->_set_error("Not a valid image");
|
|
|
|
my $x = $opts{xsize} || $self->getwidth;
|
|
my $y = $opts{ysize} || $self->getheight;
|
|
my $channels = $opts{channels} || $self->getchannels;
|
|
|
|
my $out = Imager->new;
|
|
if ($channels == $self->getchannels) {
|
|
$out->{IMG} = i_sametype($self->{IMG}, $x, $y);
|
|
}
|
|
else {
|
|
$out->{IMG} = i_sametype_chans($self->{IMG}, $x, $y, $channels);
|
|
}
|
|
unless ($out->{IMG}) {
|
|
$self->{ERRSTR} = $self->_error_as_msg;
|
|
return;
|
|
}
|
|
|
|
return $out;
|
|
}
|
|
|
|
# Sets an image to a certain size and channel number
|
|
# if there was previously data in the image it is discarded
|
|
|
|
sub img_set {
|
|
my $self=shift;
|
|
|
|
my %hsh=(xsize=>100, ysize=>100, channels=>3, bits=>8, type=>'direct', @_);
|
|
|
|
if (defined($self->{IMG})) {
|
|
# let IIM_DESTROY destroy it, it's possible this image is
|
|
# referenced from a virtual image (like masked)
|
|
#i_img_destroy($self->{IMG});
|
|
undef($self->{IMG});
|
|
}
|
|
|
|
if ($hsh{type} eq 'paletted' || $hsh{type} eq 'pseudo') {
|
|
$self->{IMG} = i_img_pal_new($hsh{xsize}, $hsh{ysize}, $hsh{channels},
|
|
$hsh{maxcolors} || 256);
|
|
}
|
|
elsif ($hsh{bits} eq 'double') {
|
|
$self->{IMG} = i_img_double_new($hsh{xsize}, $hsh{ysize}, $hsh{channels});
|
|
}
|
|
elsif ($hsh{bits} == 16) {
|
|
$self->{IMG} = i_img_16_new($hsh{xsize}, $hsh{ysize}, $hsh{channels});
|
|
}
|
|
else {
|
|
$self->{IMG}=Imager::ImgRaw::new($hsh{'xsize'}, $hsh{'ysize'},
|
|
$hsh{'channels'});
|
|
}
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->{ERRSTR} = Imager->_error_as_msg();
|
|
return;
|
|
}
|
|
|
|
$self;
|
|
}
|
|
|
|
# created a masked version of the current image
|
|
sub masked {
|
|
my $self = shift;
|
|
|
|
$self or return undef;
|
|
my %opts = (left => 0,
|
|
top => 0,
|
|
right => $self->getwidth,
|
|
bottom => $self->getheight,
|
|
@_);
|
|
my $mask = $opts{mask} ? $opts{mask}{IMG} : undef;
|
|
|
|
my $result = Imager->new;
|
|
$result->{IMG} = i_img_masked_new($self->{IMG}, $mask, $opts{left},
|
|
$opts{top}, $opts{right} - $opts{left},
|
|
$opts{bottom} - $opts{top});
|
|
# keep references to the mask and base images so they don't
|
|
# disappear on us
|
|
$result->{DEPENDS} = [ $self->{IMG}, $mask ];
|
|
|
|
$result;
|
|
}
|
|
|
|
# convert an RGB image into a paletted image
|
|
sub to_paletted {
|
|
my $self = shift;
|
|
my $opts;
|
|
if (@_ != 1 && !ref $_[0]) {
|
|
$opts = { @_ };
|
|
}
|
|
else {
|
|
$opts = shift;
|
|
}
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "to_paletted() called in void context - to_paletted() returns the converted image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
my $result = Imager->new;
|
|
$result->{IMG} = i_img_to_pal($self->{IMG}, $opts);
|
|
|
|
#print "Type ", i_img_type($result->{IMG}), "\n";
|
|
|
|
if ($result->{IMG}) {
|
|
return $result;
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = $self->_error_as_msg;
|
|
return;
|
|
}
|
|
}
|
|
|
|
# convert a paletted (or any image) to an 8-bit/channel RGB images
|
|
sub to_rgb8 {
|
|
my $self = shift;
|
|
my $result;
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "to_rgb8() called in void context - to_rgb8() returns the converted image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
if ($self->{IMG}) {
|
|
$result = Imager->new;
|
|
$result->{IMG} = i_img_to_rgb($self->{IMG})
|
|
or undef $result;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
# convert a paletted (or any image) to an 8-bit/channel RGB images
|
|
sub to_rgb16 {
|
|
my $self = shift;
|
|
my $result;
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "to_rgb16() called in void context - to_rgb8() returns the converted image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
if ($self->{IMG}) {
|
|
$result = Imager->new;
|
|
$result->{IMG} = i_img_to_rgb16($self->{IMG})
|
|
or undef $result;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
sub addcolors {
|
|
my $self = shift;
|
|
my %opts = (colors=>[], @_);
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->_set_error("empty input image");
|
|
return;
|
|
}
|
|
|
|
my @colors = @{$opts{colors}}
|
|
or return undef;
|
|
|
|
for my $color (@colors) {
|
|
$color = _color($color);
|
|
unless ($color) {
|
|
$self->_set_error($Imager::ERRSTR);
|
|
return;
|
|
}
|
|
}
|
|
|
|
return i_addcolors($self->{IMG}, @colors);
|
|
}
|
|
|
|
sub setcolors {
|
|
my $self = shift;
|
|
my %opts = (start=>0, colors=>[], @_);
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->_set_error("empty input image");
|
|
return;
|
|
}
|
|
|
|
my @colors = @{$opts{colors}}
|
|
or return undef;
|
|
|
|
for my $color (@colors) {
|
|
$color = _color($color);
|
|
unless ($color) {
|
|
$self->_set_error($Imager::ERRSTR);
|
|
return;
|
|
}
|
|
}
|
|
|
|
return i_setcolors($self->{IMG}, $opts{start}, @colors);
|
|
}
|
|
|
|
sub getcolors {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
if (!exists $opts{start} && !exists $opts{count}) {
|
|
# get them all
|
|
$opts{start} = 0;
|
|
$opts{count} = $self->colorcount;
|
|
}
|
|
elsif (!exists $opts{count}) {
|
|
$opts{count} = 1;
|
|
}
|
|
elsif (!exists $opts{start}) {
|
|
$opts{start} = 0;
|
|
}
|
|
|
|
$self->{IMG} and
|
|
return i_getcolors($self->{IMG}, $opts{start}, $opts{count});
|
|
}
|
|
|
|
sub colorcount {
|
|
i_colorcount($_[0]{IMG});
|
|
}
|
|
|
|
sub maxcolors {
|
|
i_maxcolors($_[0]{IMG});
|
|
}
|
|
|
|
sub findcolor {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
$opts{color} or return undef;
|
|
|
|
$self->{IMG} and i_findcolor($self->{IMG}, $opts{color});
|
|
}
|
|
|
|
sub bits {
|
|
my $self = shift;
|
|
my $bits = $self->{IMG} && i_img_bits($self->{IMG});
|
|
if ($bits && $bits == length(pack("d", 1)) * 8) {
|
|
$bits = 'double';
|
|
}
|
|
$bits;
|
|
}
|
|
|
|
sub type {
|
|
my $self = shift;
|
|
if ($self->{IMG}) {
|
|
return i_img_type($self->{IMG}) ? "paletted" : "direct";
|
|
}
|
|
}
|
|
|
|
sub virtual {
|
|
my $self = shift;
|
|
$self->{IMG} and i_img_virtual($self->{IMG});
|
|
}
|
|
|
|
sub tags {
|
|
my ($self, %opts) = @_;
|
|
|
|
$self->{IMG} or return;
|
|
|
|
if (defined $opts{name}) {
|
|
my @result;
|
|
my $start = 0;
|
|
my $found;
|
|
while (defined($found = i_tags_find($self->{IMG}, $opts{name}, $start))) {
|
|
push @result, (i_tags_get($self->{IMG}, $found))[1];
|
|
$start = $found+1;
|
|
}
|
|
return wantarray ? @result : $result[0];
|
|
}
|
|
elsif (defined $opts{code}) {
|
|
my @result;
|
|
my $start = 0;
|
|
my $found;
|
|
while (defined($found = i_tags_findn($self->{IMG}, $opts{code}, $start))) {
|
|
push @result, (i_tags_get($self->{IMG}, $found))[1];
|
|
$start = $found+1;
|
|
}
|
|
return @result;
|
|
}
|
|
else {
|
|
if (wantarray) {
|
|
return map { [ i_tags_get($self->{IMG}, $_) ] } 0.. i_tags_count($self->{IMG})-1;
|
|
}
|
|
else {
|
|
return i_tags_count($self->{IMG});
|
|
}
|
|
}
|
|
}
|
|
|
|
sub addtag {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
|
|
return -1 unless $self->{IMG};
|
|
if ($opts{name}) {
|
|
if (defined $opts{value}) {
|
|
if ($opts{value} =~ /^\d+$/) {
|
|
# add as a number
|
|
return i_tags_addn($self->{IMG}, $opts{name}, 0, $opts{value});
|
|
}
|
|
else {
|
|
return i_tags_add($self->{IMG}, $opts{name}, 0, $opts{value}, 0);
|
|
}
|
|
}
|
|
elsif (defined $opts{data}) {
|
|
# force addition as a string
|
|
return i_tags_add($self->{IMG}, $opts{name}, 0, $opts{data}, 0);
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "No value supplied";
|
|
return undef;
|
|
}
|
|
}
|
|
elsif ($opts{code}) {
|
|
if (defined $opts{value}) {
|
|
if ($opts{value} =~ /^\d+$/) {
|
|
# add as a number
|
|
return i_tags_addn($self->{IMG}, $opts{code}, 0, $opts{value});
|
|
}
|
|
else {
|
|
return i_tags_add($self->{IMG}, $opts{code}, 0, $opts{value}, 0);
|
|
}
|
|
}
|
|
elsif (defined $opts{data}) {
|
|
# force addition as a string
|
|
return i_tags_add($self->{IMG}, $opts{code}, 0, $opts{data}, 0);
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "No value supplied";
|
|
return undef;
|
|
}
|
|
}
|
|
else {
|
|
return undef;
|
|
}
|
|
}
|
|
|
|
sub deltag {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
|
|
return 0 unless $self->{IMG};
|
|
|
|
if (defined $opts{'index'}) {
|
|
return i_tags_delete($self->{IMG}, $opts{'index'});
|
|
}
|
|
elsif (defined $opts{name}) {
|
|
return i_tags_delbyname($self->{IMG}, $opts{name});
|
|
}
|
|
elsif (defined $opts{code}) {
|
|
return i_tags_delbycode($self->{IMG}, $opts{code});
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "Need to supply index, name, or code parameter";
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
sub settag {
|
|
my ($self, %opts) = @_;
|
|
|
|
if ($opts{name}) {
|
|
$self->deltag(name=>$opts{name});
|
|
return $self->addtag(name=>$opts{name}, value=>$opts{value});
|
|
}
|
|
elsif (defined $opts{code}) {
|
|
$self->deltag(code=>$opts{code});
|
|
return $self->addtag(code=>$opts{code}, value=>$opts{value});
|
|
}
|
|
else {
|
|
return undef;
|
|
}
|
|
}
|
|
|
|
|
|
sub _get_reader_io {
|
|
my ($self, $input) = @_;
|
|
|
|
if ($input->{io}) {
|
|
return $input->{io}, undef;
|
|
}
|
|
elsif ($input->{fd}) {
|
|
return io_new_fd($input->{fd});
|
|
}
|
|
elsif ($input->{fh}) {
|
|
my $fd = fileno($input->{fh});
|
|
unless ($fd) {
|
|
$self->_set_error("Handle in fh option not opened");
|
|
return;
|
|
}
|
|
return io_new_fd($fd);
|
|
}
|
|
elsif ($input->{file}) {
|
|
my $file = IO::File->new($input->{file}, "r");
|
|
unless ($file) {
|
|
$self->_set_error("Could not open $input->{file}: $!");
|
|
return;
|
|
}
|
|
binmode $file;
|
|
return (io_new_fd(fileno($file)), $file);
|
|
}
|
|
elsif ($input->{data}) {
|
|
return io_new_buffer($input->{data});
|
|
}
|
|
elsif ($input->{callback} || $input->{readcb}) {
|
|
if (!$input->{seekcb}) {
|
|
$self->_set_error("Need a seekcb parameter");
|
|
}
|
|
if ($input->{maxbuffer}) {
|
|
return io_new_cb($input->{writecb},
|
|
$input->{callback} || $input->{readcb},
|
|
$input->{seekcb}, $input->{closecb},
|
|
$input->{maxbuffer});
|
|
}
|
|
else {
|
|
return io_new_cb($input->{writecb},
|
|
$input->{callback} || $input->{readcb},
|
|
$input->{seekcb}, $input->{closecb});
|
|
}
|
|
}
|
|
else {
|
|
$self->_set_error("file/fd/fh/data/callback parameter missing");
|
|
return;
|
|
}
|
|
}
|
|
|
|
sub _get_writer_io {
|
|
my ($self, $input, $type) = @_;
|
|
|
|
if ($input->{io}) {
|
|
return $input->{io};
|
|
}
|
|
elsif ($input->{fd}) {
|
|
return io_new_fd($input->{fd});
|
|
}
|
|
elsif ($input->{fh}) {
|
|
my $fd = fileno($input->{fh});
|
|
unless ($fd) {
|
|
$self->_set_error("Handle in fh option not opened");
|
|
return;
|
|
}
|
|
# flush it
|
|
my $oldfh = select($input->{fh});
|
|
# flush anything that's buffered, and make sure anything else is flushed
|
|
$| = 1;
|
|
select($oldfh);
|
|
return io_new_fd($fd);
|
|
}
|
|
elsif ($input->{file}) {
|
|
my $fh = new IO::File($input->{file},"w+");
|
|
unless ($fh) {
|
|
$self->_set_error("Could not open file $input->{file}: $!");
|
|
return;
|
|
}
|
|
binmode($fh) or die;
|
|
return (io_new_fd(fileno($fh)), $fh);
|
|
}
|
|
elsif ($input->{data}) {
|
|
return io_new_bufchain();
|
|
}
|
|
elsif ($input->{callback} || $input->{writecb}) {
|
|
if ($input->{maxbuffer}) {
|
|
return io_new_cb($input->{callback} || $input->{writecb},
|
|
$input->{readcb},
|
|
$input->{seekcb}, $input->{closecb},
|
|
$input->{maxbuffer});
|
|
}
|
|
else {
|
|
return io_new_cb($input->{callback} || $input->{writecb},
|
|
$input->{readcb},
|
|
$input->{seekcb}, $input->{closecb});
|
|
}
|
|
}
|
|
else {
|
|
$self->_set_error("file/fd/fh/data/callback parameter missing");
|
|
return;
|
|
}
|
|
}
|
|
|
|
# Read an image from file
|
|
|
|
sub read {
|
|
my $self = shift;
|
|
my %input=@_;
|
|
|
|
if (defined($self->{IMG})) {
|
|
# let IIM_DESTROY do the destruction, since the image may be
|
|
# referenced from elsewhere
|
|
#i_img_destroy($self->{IMG});
|
|
undef($self->{IMG});
|
|
}
|
|
|
|
my ($IO, $fh) = $self->_get_reader_io(\%input) or return;
|
|
|
|
unless ($input{'type'}) {
|
|
$input{'type'} = i_test_format_probe($IO, -1);
|
|
}
|
|
|
|
unless ($input{'type'}) {
|
|
$self->_set_error('type parameter missing and not possible to guess from extension');
|
|
return undef;
|
|
}
|
|
|
|
_reader_autoload($input{type});
|
|
|
|
if ($readers{$input{type}} && $readers{$input{type}}{single}) {
|
|
return $readers{$input{type}}{single}->($self, $IO, %input);
|
|
}
|
|
|
|
unless ($formats{$input{'type'}}) {
|
|
$self->_set_error("format '$input{'type'}' not supported");
|
|
return;
|
|
}
|
|
|
|
# Setup data source
|
|
if ( $input{'type'} eq 'jpeg' ) {
|
|
($self->{IMG},$self->{IPTCRAW}) = i_readjpeg_wiol( $IO );
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg(); return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a jpeg file\n";
|
|
return $self;
|
|
}
|
|
|
|
my $allow_incomplete = $input{allow_incomplete};
|
|
defined $allow_incomplete or $allow_incomplete = 0;
|
|
|
|
if ( $input{'type'} eq 'tiff' ) {
|
|
my $page = $input{'page'};
|
|
defined $page or $page = 0;
|
|
$self->{IMG}=i_readtiff_wiol( $IO, $allow_incomplete, $page );
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg(); return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a tiff file\n";
|
|
return $self;
|
|
}
|
|
|
|
if ( $input{'type'} eq 'pnm' ) {
|
|
$self->{IMG}=i_readpnm_wiol( $IO, $allow_incomplete );
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}='unable to read pnm image: '._error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a pnm file\n";
|
|
return $self;
|
|
}
|
|
|
|
if ( $input{'type'} eq 'png' ) {
|
|
$self->{IMG}=i_readpng_wiol( $IO, -1 ); # Fixme, check if that length parameter is ever needed
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a png file\n";
|
|
}
|
|
|
|
if ( $input{'type'} eq 'bmp' ) {
|
|
$self->{IMG}=i_readbmp_wiol( $IO, $allow_incomplete );
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a bmp file\n";
|
|
}
|
|
|
|
if ( $input{'type'} eq 'gif' ) {
|
|
if ($input{colors} && !ref($input{colors})) {
|
|
# must be a reference to a scalar that accepts the colour map
|
|
$self->{ERRSTR} = "option 'colors' must be a scalar reference";
|
|
return undef;
|
|
}
|
|
if ($input{'gif_consolidate'}) {
|
|
if ($input{colors}) {
|
|
my $colors;
|
|
($self->{IMG}, $colors) =i_readgif_wiol( $IO );
|
|
if ($colors) {
|
|
${ $input{colors} } = [ map { NC(@$_) } @$colors ];
|
|
}
|
|
}
|
|
else {
|
|
$self->{IMG} =i_readgif_wiol( $IO );
|
|
}
|
|
}
|
|
else {
|
|
my $page = $input{'page'};
|
|
defined $page or $page = 0;
|
|
$self->{IMG} = i_readgif_single_wiol( $IO, $page );
|
|
if ($self->{IMG} && $input{colors}) {
|
|
${ $input{colors} } =
|
|
[ i_getcolors($self->{IMG}, 0, i_colorcount($self->{IMG})) ];
|
|
}
|
|
}
|
|
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a gif file\n";
|
|
}
|
|
|
|
if ( $input{'type'} eq 'tga' ) {
|
|
$self->{IMG}=i_readtga_wiol( $IO, -1 ); # Fixme, check if that length parameter is ever needed
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a tga file\n";
|
|
}
|
|
|
|
if ( $input{'type'} eq 'raw' ) {
|
|
my %params=(datachannels=>3,storechannels=>3,interleave=>1,%input);
|
|
|
|
if ( !($params{xsize} && $params{ysize}) ) {
|
|
$self->{ERRSTR}='missing xsize or ysize parameter for raw';
|
|
return undef;
|
|
}
|
|
|
|
$self->{IMG} = i_readraw_wiol( $IO,
|
|
$params{xsize},
|
|
$params{ysize},
|
|
$params{datachannels},
|
|
$params{storechannels},
|
|
$params{interleave});
|
|
if ( !defined($self->{IMG}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "loading a raw file\n";
|
|
}
|
|
|
|
return $self;
|
|
}
|
|
|
|
sub register_reader {
|
|
my ($class, %opts) = @_;
|
|
|
|
defined $opts{type}
|
|
or die "register_reader called with no type parameter\n";
|
|
|
|
my $type = $opts{type};
|
|
|
|
defined $opts{single} || defined $opts{multiple}
|
|
or die "register_reader called with no single or multiple parameter\n";
|
|
|
|
$readers{$type} = { };
|
|
if ($opts{single}) {
|
|
$readers{$type}{single} = $opts{single};
|
|
}
|
|
if ($opts{multiple}) {
|
|
$readers{$type}{multiple} = $opts{multiple};
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
sub register_writer {
|
|
my ($class, %opts) = @_;
|
|
|
|
defined $opts{type}
|
|
or die "register_writer called with no type parameter\n";
|
|
|
|
my $type = $opts{type};
|
|
|
|
defined $opts{single} || defined $opts{multiple}
|
|
or die "register_writer called with no single or multiple parameter\n";
|
|
|
|
$writers{$type} = { };
|
|
if ($opts{single}) {
|
|
$writers{$type}{single} = $opts{single};
|
|
}
|
|
if ($opts{multiple}) {
|
|
$writers{$type}{multiple} = $opts{multiple};
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
# probes for an Imager::File::whatever module
|
|
sub _reader_autoload {
|
|
my $type = shift;
|
|
|
|
return if $formats{$type} || $readers{$type};
|
|
|
|
return unless $type =~ /^\w+$/;
|
|
|
|
my $file = "Imager/File/\U$type\E.pm";
|
|
|
|
unless ($attempted_to_load{$file}) {
|
|
eval {
|
|
++$attempted_to_load{$file};
|
|
require $file;
|
|
};
|
|
if ($@) {
|
|
# try to get a reader specific module
|
|
my $file = "Imager/File/\U$type\EReader.pm";
|
|
unless ($attempted_to_load{$file}) {
|
|
eval {
|
|
++$attempted_to_load{$file};
|
|
require $file;
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
# probes for an Imager::File::whatever module
|
|
sub _writer_autoload {
|
|
my $type = shift;
|
|
|
|
return if $formats{$type} || $readers{$type};
|
|
|
|
return unless $type =~ /^\w+$/;
|
|
|
|
my $file = "Imager/File/\U$type\E.pm";
|
|
|
|
unless ($attempted_to_load{$file}) {
|
|
eval {
|
|
++$attempted_to_load{$file};
|
|
require $file;
|
|
};
|
|
if ($@) {
|
|
# try to get a writer specific module
|
|
my $file = "Imager/File/\U$type\EWriter.pm";
|
|
unless ($attempted_to_load{$file}) {
|
|
eval {
|
|
++$attempted_to_load{$file};
|
|
require $file;
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
sub _fix_gif_positions {
|
|
my ($opts, $opt, $msg, @imgs) = @_;
|
|
|
|
my $positions = $opts->{'gif_positions'};
|
|
my $index = 0;
|
|
for my $pos (@$positions) {
|
|
my ($x, $y) = @$pos;
|
|
my $img = $imgs[$index++];
|
|
$img->settag(name=>'gif_left', value=>$x);
|
|
$img->settag(name=>'gif_top', value=>$y) if defined $y;
|
|
}
|
|
$$msg .= "replaced with the gif_left and gif_top tags";
|
|
}
|
|
|
|
my %obsolete_opts =
|
|
(
|
|
gif_each_palette=>'gif_local_map',
|
|
interlace => 'gif_interlace',
|
|
gif_delays => 'gif_delay',
|
|
gif_positions => \&_fix_gif_positions,
|
|
gif_loop_count => 'gif_loop',
|
|
);
|
|
|
|
sub _set_opts {
|
|
my ($self, $opts, $prefix, @imgs) = @_;
|
|
|
|
for my $opt (keys %$opts) {
|
|
my $tagname = $opt;
|
|
if ($obsolete_opts{$opt}) {
|
|
my $new = $obsolete_opts{$opt};
|
|
my $msg = "Obsolete option $opt ";
|
|
if (ref $new) {
|
|
$new->($opts, $opt, \$msg, @imgs);
|
|
}
|
|
else {
|
|
$msg .= "replaced with the $new tag ";
|
|
$tagname = $new;
|
|
}
|
|
$msg .= "line ".(caller(2))[2]." of file ".(caller(2))[1];
|
|
warn $msg if $warn_obsolete && $^W;
|
|
}
|
|
next unless $tagname =~ /^\Q$prefix/;
|
|
my $value = $opts->{$opt};
|
|
if (ref $value) {
|
|
if (UNIVERSAL::isa($value, "Imager::Color")) {
|
|
my $tag = sprintf("color(%d,%d,%d,%d)", $value->rgba);
|
|
for my $img (@imgs) {
|
|
$img->settag(name=>$tagname, value=>$tag);
|
|
}
|
|
}
|
|
elsif (ref($value) eq 'ARRAY') {
|
|
for my $i (0..$#$value) {
|
|
my $val = $value->[$i];
|
|
if (ref $val) {
|
|
if (UNIVERSAL::isa($val, "Imager::Color")) {
|
|
my $tag = sprintf("color(%d,%d,%d,%d)", $value->rgba);
|
|
$i < @imgs and
|
|
$imgs[$i]->settag(name=>$tagname, value=>$tag);
|
|
}
|
|
else {
|
|
$self->_set_error("Unknown reference type " . ref($value) .
|
|
" supplied in array for $opt");
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
$i < @imgs
|
|
and $imgs[$i]->settag(name=>$tagname, value=>$val);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
$self->_set_error("Unknown reference type " . ref($value) .
|
|
" supplied for $opt");
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
# set it as a tag for every image
|
|
for my $img (@imgs) {
|
|
$img->settag(name=>$tagname, value=>$value);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
# Write an image to file
|
|
sub write {
|
|
my $self = shift;
|
|
my %input=(jpegquality=>75,
|
|
gifquant=>'mc',
|
|
lmdither=>6.0,
|
|
lmfixed=>[],
|
|
idstring=>"",
|
|
compress=>1,
|
|
wierdpack=>0,
|
|
fax_fine=>1, @_);
|
|
my $rc;
|
|
|
|
$self->_set_opts(\%input, "i_", $self)
|
|
or return undef;
|
|
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
if (!$input{'type'} and $input{file}) {
|
|
$input{'type'}=$FORMATGUESS->($input{file});
|
|
}
|
|
if (!$input{'type'}) {
|
|
$self->{ERRSTR}='type parameter missing and not possible to guess from extension';
|
|
return undef;
|
|
}
|
|
|
|
_writer_autoload($input{type});
|
|
|
|
my ($IO, $fh);
|
|
if ($writers{$input{type}} && $writers{$input{type}}{single}) {
|
|
($IO, $fh) = $self->_get_writer_io(\%input, $input{'type'})
|
|
or return undef;
|
|
|
|
$writers{$input{type}}{single}->($self, $IO, %input)
|
|
or return undef;
|
|
}
|
|
else {
|
|
if (!$formats{$input{'type'}}) {
|
|
$self->{ERRSTR}='format not supported';
|
|
return undef;
|
|
}
|
|
|
|
($IO, $fh) = $self->_get_writer_io(\%input, $input{'type'})
|
|
or return undef;
|
|
|
|
if ($input{'type'} eq 'tiff') {
|
|
$self->_set_opts(\%input, "tiff_", $self)
|
|
or return undef;
|
|
$self->_set_opts(\%input, "exif_", $self)
|
|
or return undef;
|
|
|
|
if (defined $input{class} && $input{class} eq 'fax') {
|
|
if (!i_writetiff_wiol_faxable($self->{IMG}, $IO, $input{fax_fine})) {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
} else {
|
|
if (!i_writetiff_wiol($self->{IMG}, $IO)) {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
}
|
|
} elsif ( $input{'type'} eq 'pnm' ) {
|
|
$self->_set_opts(\%input, "pnm_", $self)
|
|
or return undef;
|
|
if ( ! i_writeppm_wiol($self->{IMG},$IO) ) {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "writing a pnm file\n";
|
|
} elsif ( $input{'type'} eq 'raw' ) {
|
|
$self->_set_opts(\%input, "raw_", $self)
|
|
or return undef;
|
|
if ( !i_writeraw_wiol($self->{IMG},$IO) ) {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "writing a raw file\n";
|
|
} elsif ( $input{'type'} eq 'png' ) {
|
|
$self->_set_opts(\%input, "png_", $self)
|
|
or return undef;
|
|
if ( !i_writepng_wiol($self->{IMG}, $IO) ) {
|
|
$self->{ERRSTR}='unable to write png image';
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "writing a png file\n";
|
|
} elsif ( $input{'type'} eq 'jpeg' ) {
|
|
$self->_set_opts(\%input, "jpeg_", $self)
|
|
or return undef;
|
|
$self->_set_opts(\%input, "exif_", $self)
|
|
or return undef;
|
|
if ( !i_writejpeg_wiol($self->{IMG}, $IO, $input{jpegquality})) {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "writing a jpeg file\n";
|
|
} elsif ( $input{'type'} eq 'bmp' ) {
|
|
$self->_set_opts(\%input, "bmp_", $self)
|
|
or return undef;
|
|
if ( !i_writebmp_wiol($self->{IMG}, $IO) ) {
|
|
$self->{ERRSTR} = $self->_error_as_msg;
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "writing a bmp file\n";
|
|
} elsif ( $input{'type'} eq 'tga' ) {
|
|
$self->_set_opts(\%input, "tga_", $self)
|
|
or return undef;
|
|
|
|
if ( !i_writetga_wiol($self->{IMG}, $IO, $input{wierdpack}, $input{compress}, $input{idstring}) ) {
|
|
$self->{ERRSTR}=$self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
$self->{DEBUG} && print "writing a tga file\n";
|
|
} elsif ( $input{'type'} eq 'gif' ) {
|
|
$self->_set_opts(\%input, "gif_", $self)
|
|
or return undef;
|
|
# compatibility with the old interfaces
|
|
if ($input{gifquant} eq 'lm') {
|
|
$input{make_colors} = 'addi';
|
|
$input{translate} = 'perturb';
|
|
$input{perturb} = $input{lmdither};
|
|
} elsif ($input{gifquant} eq 'gen') {
|
|
# just pass options through
|
|
} else {
|
|
$input{make_colors} = 'webmap'; # ignored
|
|
$input{translate} = 'giflib';
|
|
}
|
|
if (!i_writegif_wiol($IO, \%input, $self->{IMG})) {
|
|
$self->{ERRSTR} = $self->_error_as_msg;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (exists $input{'data'}) {
|
|
my $data = io_slurp($IO);
|
|
if (!$data) {
|
|
$self->{ERRSTR}='Could not slurp from buffer';
|
|
return undef;
|
|
}
|
|
${$input{data}} = $data;
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
sub write_multi {
|
|
my ($class, $opts, @images) = @_;
|
|
|
|
my $type = $opts->{type};
|
|
|
|
if (!$type && $opts->{'file'}) {
|
|
$type = $FORMATGUESS->($opts->{'file'});
|
|
}
|
|
unless ($type) {
|
|
$class->_set_error('type parameter missing and not possible to guess from extension');
|
|
return;
|
|
}
|
|
# translate to ImgRaw
|
|
if (grep !UNIVERSAL::isa($_, 'Imager') || !$_->{IMG}, @images) {
|
|
$class->_set_error('Usage: Imager->write_multi({ options }, @images)');
|
|
return 0;
|
|
}
|
|
$class->_set_opts($opts, "i_", @images)
|
|
or return;
|
|
my @work = map $_->{IMG}, @images;
|
|
|
|
_writer_autoload($type);
|
|
|
|
my ($IO, $file);
|
|
if ($writers{$type} && $writers{$type}{multiple}) {
|
|
($IO, $file) = $class->_get_writer_io($opts, $type)
|
|
or return undef;
|
|
|
|
$writers{$type}{multiple}->($class, $IO, $opts, @images)
|
|
or return undef;
|
|
}
|
|
else {
|
|
if (!$formats{$type}) {
|
|
$class->_set_error("format $type not supported");
|
|
return undef;
|
|
}
|
|
|
|
($IO, $file) = $class->_get_writer_io($opts, $type)
|
|
or return undef;
|
|
|
|
if ($type eq 'gif') {
|
|
$class->_set_opts($opts, "gif_", @images)
|
|
or return;
|
|
my $gif_delays = $opts->{gif_delays};
|
|
local $opts->{gif_delays} = $gif_delays;
|
|
if ($opts->{gif_delays} && !ref $opts->{gif_delays}) {
|
|
# assume the caller wants the same delay for each frame
|
|
$opts->{gif_delays} = [ ($gif_delays) x @images ];
|
|
}
|
|
unless (i_writegif_wiol($IO, $opts, @work)) {
|
|
$class->_set_error($class->_error_as_msg());
|
|
return undef;
|
|
}
|
|
}
|
|
elsif ($type eq 'tiff') {
|
|
$class->_set_opts($opts, "tiff_", @images)
|
|
or return;
|
|
$class->_set_opts($opts, "exif_", @images)
|
|
or return;
|
|
my $res;
|
|
$opts->{fax_fine} = 1 unless exists $opts->{fax_fine};
|
|
if ($opts->{'class'} && $opts->{'class'} eq 'fax') {
|
|
$res = i_writetiff_multi_wiol_faxable($IO, $opts->{fax_fine}, @work);
|
|
}
|
|
else {
|
|
$res = i_writetiff_multi_wiol($IO, @work);
|
|
}
|
|
unless ($res) {
|
|
$class->_set_error($class->_error_as_msg());
|
|
return undef;
|
|
}
|
|
}
|
|
else {
|
|
if (@images == 1) {
|
|
unless ($images[0]->write(%$opts, io => $IO, type => $type)) {
|
|
return 1;
|
|
}
|
|
}
|
|
else {
|
|
$ERRSTR = "Sorry, write_multi doesn't support $type yet";
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (exists $opts->{'data'}) {
|
|
my $data = io_slurp($IO);
|
|
if (!$data) {
|
|
Imager->_set_error('Could not slurp from buffer');
|
|
return undef;
|
|
}
|
|
${$opts->{data}} = $data;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
# read multiple images from a file
|
|
sub read_multi {
|
|
my ($class, %opts) = @_;
|
|
|
|
my ($IO, $file) = $class->_get_reader_io(\%opts, $opts{'type'})
|
|
or return;
|
|
|
|
my $type = $opts{'type'};
|
|
unless ($type) {
|
|
$type = i_test_format_probe($IO, -1);
|
|
}
|
|
|
|
if ($opts{file} && !$type) {
|
|
# guess the type
|
|
$type = $FORMATGUESS->($opts{file});
|
|
}
|
|
|
|
unless ($type) {
|
|
$ERRSTR = "No type parameter supplied and it couldn't be guessed";
|
|
return;
|
|
}
|
|
|
|
_reader_autoload($type);
|
|
|
|
if ($readers{$type} && $readers{$type}{multiple}) {
|
|
return $readers{$type}{multiple}->($IO, %opts);
|
|
}
|
|
|
|
if ($type eq 'gif') {
|
|
my @imgs;
|
|
@imgs = i_readgif_multi_wiol($IO);
|
|
if (@imgs) {
|
|
return map {
|
|
bless { IMG=>$_, DEBUG=>$DEBUG, ERRSTR=>undef }, 'Imager'
|
|
} @imgs;
|
|
}
|
|
else {
|
|
$ERRSTR = _error_as_msg();
|
|
return;
|
|
}
|
|
}
|
|
elsif ($type eq 'tiff') {
|
|
my @imgs = i_readtiff_multi_wiol($IO, -1);
|
|
if (@imgs) {
|
|
return map {
|
|
bless { IMG=>$_, DEBUG=>$DEBUG, ERRSTR=>undef }, 'Imager'
|
|
} @imgs;
|
|
}
|
|
else {
|
|
$ERRSTR = _error_as_msg();
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
my $img = Imager->new;
|
|
if ($img->read(%opts, io => $IO, type => $type)) {
|
|
return ( $img );
|
|
}
|
|
}
|
|
|
|
$ERRSTR = "Cannot read multiple images from $type files";
|
|
return;
|
|
}
|
|
|
|
# Destroy an Imager object
|
|
|
|
sub DESTROY {
|
|
my $self=shift;
|
|
# delete $instances{$self};
|
|
if (defined($self->{IMG})) {
|
|
# the following is now handled by the XS DESTROY method for
|
|
# Imager::ImgRaw object
|
|
# Re-enabling this will break virtual images
|
|
# tested for in t/t020masked.t
|
|
# i_img_destroy($self->{IMG});
|
|
undef($self->{IMG});
|
|
} else {
|
|
# print "Destroy Called on an empty image!\n"; # why did I put this here??
|
|
}
|
|
}
|
|
|
|
# Perform an inplace filter of an image
|
|
# that is the image will be overwritten with the data
|
|
|
|
sub filter {
|
|
my $self=shift;
|
|
my %input=@_;
|
|
my %hsh;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
if (!$input{'type'}) { $self->{ERRSTR}='type parameter missing'; return undef; }
|
|
|
|
if ( (grep { $_ eq $input{'type'} } keys %filters) != 1) {
|
|
$self->{ERRSTR}='type parameter not matching any filter'; return undef;
|
|
}
|
|
|
|
if ($filters{$input{'type'}}{names}) {
|
|
my $names = $filters{$input{'type'}}{names};
|
|
for my $name (keys %$names) {
|
|
if (defined $input{$name} && exists $names->{$name}{$input{$name}}) {
|
|
$input{$name} = $names->{$name}{$input{$name}};
|
|
}
|
|
}
|
|
}
|
|
if (defined($filters{$input{'type'}}{defaults})) {
|
|
%hsh=( image => $self->{IMG},
|
|
imager => $self,
|
|
%{$filters{$input{'type'}}{defaults}},
|
|
%input );
|
|
} else {
|
|
%hsh=( image => $self->{IMG},
|
|
imager => $self,
|
|
%input );
|
|
}
|
|
|
|
my @cs=@{$filters{$input{'type'}}{callseq}};
|
|
|
|
for(@cs) {
|
|
if (!defined($hsh{$_})) {
|
|
$self->{ERRSTR}="missing parameter '$_' for filter ".$input{'type'}; return undef;
|
|
}
|
|
}
|
|
|
|
eval {
|
|
local $SIG{__DIE__}; # we don't want this processed by confess, etc
|
|
&{$filters{$input{'type'}}{callsub}}(%hsh);
|
|
};
|
|
if ($@) {
|
|
chomp($self->{ERRSTR} = $@);
|
|
return;
|
|
}
|
|
|
|
my @b=keys %hsh;
|
|
|
|
$self->{DEBUG} && print "callseq is: @cs\n";
|
|
$self->{DEBUG} && print "matching callseq is: @b\n";
|
|
|
|
return $self;
|
|
}
|
|
|
|
sub register_filter {
|
|
my $class = shift;
|
|
my %hsh = ( defaults => {}, @_ );
|
|
|
|
defined $hsh{type}
|
|
or die "register_filter() with no type\n";
|
|
defined $hsh{callsub}
|
|
or die "register_filter() with no callsub\n";
|
|
defined $hsh{callseq}
|
|
or die "register_filter() with no callseq\n";
|
|
|
|
exists $filters{$hsh{type}}
|
|
and return;
|
|
|
|
$filters{$hsh{type}} = \%hsh;
|
|
|
|
return 1;
|
|
}
|
|
|
|
# Scale an image to requested size and return the scaled version
|
|
|
|
sub scale {
|
|
my $self=shift;
|
|
my %opts=('type'=>'max',qtype=>'normal',@_);
|
|
my $img = Imager->new();
|
|
my $tmp = Imager->new();
|
|
my ($x_scale, $y_scale);
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "scale() called in void context - scale() returns the scaled image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->_set_error('empty input image');
|
|
return undef;
|
|
}
|
|
|
|
if ($opts{'xscalefactor'} && $opts{'yscalefactor'}) {
|
|
$x_scale = $opts{'xscalefactor'};
|
|
$y_scale = $opts{'yscalefactor'};
|
|
}
|
|
elsif ($opts{'xscalefactor'}) {
|
|
$x_scale = $opts{'xscalefactor'};
|
|
$y_scale = $opts{'scalefactor'} || $x_scale;
|
|
}
|
|
elsif ($opts{'yscalefactor'}) {
|
|
$y_scale = $opts{'yscalefactor'};
|
|
$x_scale = $opts{'scalefactor'} || $y_scale;
|
|
}
|
|
else {
|
|
$x_scale = $y_scale = $opts{'scalefactor'} || 0.5;
|
|
}
|
|
|
|
# work out the scaling
|
|
if ($opts{xpixels} and $opts{ypixels} and $opts{'type'}) {
|
|
my ($xpix, $ypix)=( $opts{xpixels} / $self->getwidth() ,
|
|
$opts{ypixels} / $self->getheight() );
|
|
if ($opts{'type'} eq 'min') {
|
|
$x_scale = $y_scale = _min($xpix,$ypix);
|
|
}
|
|
elsif ($opts{'type'} eq 'max') {
|
|
$x_scale = $y_scale = _max($xpix,$ypix);
|
|
}
|
|
elsif ($opts{'type'} eq 'nonprop' || $opts{'type'} eq 'non-proportional') {
|
|
$x_scale = $xpix;
|
|
$y_scale = $ypix;
|
|
}
|
|
else {
|
|
$self->_set_error('invalid value for type parameter');
|
|
return undef;
|
|
}
|
|
} elsif ($opts{xpixels}) {
|
|
$x_scale = $y_scale = $opts{xpixels} / $self->getwidth();
|
|
}
|
|
elsif ($opts{ypixels}) {
|
|
$x_scale = $y_scale = $opts{ypixels}/$self->getheight();
|
|
}
|
|
elsif ($opts{constrain} && ref $opts{constrain}
|
|
&& $opts{constrain}->can('constrain')) {
|
|
# we've been passed an Image::Math::Constrain object or something
|
|
# that looks like one
|
|
my $scalefactor;
|
|
(undef, undef, $scalefactor)
|
|
= $opts{constrain}->constrain($self->getwidth, $self->getheight);
|
|
unless ($scalefactor) {
|
|
$self->_set_error('constrain method failed on constrain parameter');
|
|
return undef;
|
|
}
|
|
$x_scale = $y_scale = $scalefactor;
|
|
}
|
|
|
|
if ($opts{qtype} eq 'normal') {
|
|
$tmp->{IMG} = i_scaleaxis($self->{IMG}, $x_scale, 0);
|
|
if ( !defined($tmp->{IMG}) ) {
|
|
$self->{ERRSTR} = 'unable to scale image';
|
|
return undef;
|
|
}
|
|
$img->{IMG}=i_scaleaxis($tmp->{IMG}, $y_scale, 1);
|
|
if ( !defined($img->{IMG}) ) {
|
|
$self->{ERRSTR}='unable to scale image';
|
|
return undef;
|
|
}
|
|
|
|
return $img;
|
|
}
|
|
elsif ($opts{'qtype'} eq 'preview') {
|
|
$img->{IMG} = i_scale_nn($self->{IMG}, $x_scale, $y_scale);
|
|
if ( !defined($img->{IMG}) ) {
|
|
$self->{ERRSTR}='unable to scale image';
|
|
return undef;
|
|
}
|
|
return $img;
|
|
}
|
|
elsif ($opts{'qtype'} eq 'mixing') {
|
|
my $new_width = int(0.5 + $self->getwidth * $x_scale);
|
|
my $new_height = int(0.5 + $self->getheight * $y_scale);
|
|
$new_width >= 1 or $new_width = 1;
|
|
$new_height >= 1 or $new_height = 1;
|
|
$img->{IMG} = i_scale_mixing($self->{IMG}, $new_width, $new_height);
|
|
unless ($img->{IMG}) {
|
|
$self->_set_error(Imager->_error_as_meg);
|
|
return;
|
|
}
|
|
return $img;
|
|
}
|
|
else {
|
|
$self->_set_error('invalid value for qtype parameter');
|
|
return undef;
|
|
}
|
|
}
|
|
|
|
# Scales only along the X axis
|
|
|
|
sub scaleX {
|
|
my $self = shift;
|
|
my %opts = ( scalefactor=>0.5, @_ );
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "scaleX() called in void context - scaleX() returns the scaled image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->{ERRSTR} = 'empty input image';
|
|
return undef;
|
|
}
|
|
|
|
my $img = Imager->new();
|
|
|
|
my $scalefactor = $opts{scalefactor};
|
|
|
|
if ($opts{pixels}) {
|
|
$scalefactor = $opts{pixels} / $self->getwidth();
|
|
}
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->{ERRSTR}='empty input image';
|
|
return undef;
|
|
}
|
|
|
|
$img->{IMG} = i_scaleaxis($self->{IMG}, $scalefactor, 0);
|
|
|
|
if ( !defined($img->{IMG}) ) {
|
|
$self->{ERRSTR} = 'unable to scale image';
|
|
return undef;
|
|
}
|
|
|
|
return $img;
|
|
}
|
|
|
|
# Scales only along the Y axis
|
|
|
|
sub scaleY {
|
|
my $self = shift;
|
|
my %opts = ( scalefactor => 0.5, @_ );
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "scaleY() called in void context - scaleY() returns the scaled image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
my $img = Imager->new();
|
|
|
|
my $scalefactor = $opts{scalefactor};
|
|
|
|
if ($opts{pixels}) {
|
|
$scalefactor = $opts{pixels} / $self->getheight();
|
|
}
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->{ERRSTR} = 'empty input image';
|
|
return undef;
|
|
}
|
|
$img->{IMG}=i_scaleaxis($self->{IMG}, $scalefactor, 1);
|
|
|
|
if ( !defined($img->{IMG}) ) {
|
|
$self->{ERRSTR} = 'unable to scale image';
|
|
return undef;
|
|
}
|
|
|
|
return $img;
|
|
}
|
|
|
|
# Transform returns a spatial transformation of the input image
|
|
# this moves pixels to a new location in the returned image.
|
|
# NOTE - should make a utility function to check transforms for
|
|
# stack overruns
|
|
|
|
sub transform {
|
|
my $self=shift;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
my %opts=@_;
|
|
my (@op,@ropx,@ropy,$iop,$or,@parm,$expr,@xt,@yt,@pt,$numre);
|
|
|
|
# print Dumper(\%opts);
|
|
# xopcopdes
|
|
|
|
if ( $opts{'xexpr'} and $opts{'yexpr'} ) {
|
|
if (!$I2P) {
|
|
eval ("use Affix::Infix2Postfix;");
|
|
print $@;
|
|
if ( $@ ) {
|
|
$self->{ERRSTR}='transform: expr given and Affix::Infix2Postfix is not avaliable.';
|
|
return undef;
|
|
}
|
|
$I2P=Affix::Infix2Postfix->new('ops'=>[{op=>'+',trans=>'Add'},
|
|
{op=>'-',trans=>'Sub'},
|
|
{op=>'*',trans=>'Mult'},
|
|
{op=>'/',trans=>'Div'},
|
|
{op=>'-','type'=>'unary',trans=>'u-'},
|
|
{op=>'**'},
|
|
{op=>'func','type'=>'unary'}],
|
|
'grouping'=>[qw( \( \) )],
|
|
'func'=>[qw( sin cos )],
|
|
'vars'=>[qw( x y )]
|
|
);
|
|
}
|
|
|
|
@xt=$I2P->translate($opts{'xexpr'});
|
|
@yt=$I2P->translate($opts{'yexpr'});
|
|
|
|
$numre=$I2P->{'numre'};
|
|
@pt=(0,0);
|
|
|
|
for(@xt) { if (/$numre/) { push(@pt,$_); push(@{$opts{'xopcodes'}},'Parm',$#pt); } else { push(@{$opts{'xopcodes'}},$_); } }
|
|
for(@yt) { if (/$numre/) { push(@pt,$_); push(@{$opts{'yopcodes'}},'Parm',$#pt); } else { push(@{$opts{'yopcodes'}},$_); } }
|
|
@{$opts{'parm'}}=@pt;
|
|
}
|
|
|
|
# print Dumper(\%opts);
|
|
|
|
if ( !exists $opts{'xopcodes'} or @{$opts{'xopcodes'}}==0) {
|
|
$self->{ERRSTR}='transform: no xopcodes given.';
|
|
return undef;
|
|
}
|
|
|
|
@op=@{$opts{'xopcodes'}};
|
|
for $iop (@op) {
|
|
if (!defined ($OPCODES{$iop}) and ($iop !~ /^\d+$/) ) {
|
|
$self->{ERRSTR}="transform: illegal opcode '$_'.";
|
|
return undef;
|
|
}
|
|
push(@ropx,(exists $OPCODES{$iop}) ? @{$OPCODES{$iop}} : $iop );
|
|
}
|
|
|
|
|
|
# yopcopdes
|
|
|
|
if ( !exists $opts{'yopcodes'} or @{$opts{'yopcodes'}}==0) {
|
|
$self->{ERRSTR}='transform: no yopcodes given.';
|
|
return undef;
|
|
}
|
|
|
|
@op=@{$opts{'yopcodes'}};
|
|
for $iop (@op) {
|
|
if (!defined ($OPCODES{$iop}) and ($iop !~ /^\d+$/) ) {
|
|
$self->{ERRSTR}="transform: illegal opcode '$_'.";
|
|
return undef;
|
|
}
|
|
push(@ropy,(exists $OPCODES{$iop}) ? @{$OPCODES{$iop}} : $iop );
|
|
}
|
|
|
|
#parameters
|
|
|
|
if ( !exists $opts{'parm'}) {
|
|
$self->{ERRSTR}='transform: no parameter arg given.';
|
|
return undef;
|
|
}
|
|
|
|
# print Dumper(\@ropx);
|
|
# print Dumper(\@ropy);
|
|
# print Dumper(\@ropy);
|
|
|
|
my $img = Imager->new();
|
|
$img->{IMG}=i_transform($self->{IMG},\@ropx,\@ropy,$opts{'parm'});
|
|
if ( !defined($img->{IMG}) ) { $self->{ERRSTR}='transform: failed'; return undef; }
|
|
return $img;
|
|
}
|
|
|
|
|
|
sub transform2 {
|
|
my ($opts, @imgs) = @_;
|
|
|
|
require "Imager/Expr.pm";
|
|
|
|
$opts->{variables} = [ qw(x y) ];
|
|
my ($width, $height) = @{$opts}{qw(width height)};
|
|
if (@imgs) {
|
|
$width ||= $imgs[0]->getwidth();
|
|
$height ||= $imgs[0]->getheight();
|
|
my $img_num = 1;
|
|
for my $img (@imgs) {
|
|
$opts->{constants}{"w$img_num"} = $img->getwidth();
|
|
$opts->{constants}{"h$img_num"} = $img->getheight();
|
|
$opts->{constants}{"cx$img_num"} = $img->getwidth()/2;
|
|
$opts->{constants}{"cy$img_num"} = $img->getheight()/2;
|
|
++$img_num;
|
|
}
|
|
}
|
|
if ($width) {
|
|
$opts->{constants}{w} = $width;
|
|
$opts->{constants}{cx} = $width/2;
|
|
}
|
|
else {
|
|
$Imager::ERRSTR = "No width supplied";
|
|
return;
|
|
}
|
|
if ($height) {
|
|
$opts->{constants}{h} = $height;
|
|
$opts->{constants}{cy} = $height/2;
|
|
}
|
|
else {
|
|
$Imager::ERRSTR = "No height supplied";
|
|
return;
|
|
}
|
|
my $code = Imager::Expr->new($opts);
|
|
if (!$code) {
|
|
$Imager::ERRSTR = Imager::Expr::error();
|
|
return;
|
|
}
|
|
my $channels = $opts->{channels} || 3;
|
|
unless ($channels >= 1 && $channels <= 4) {
|
|
return Imager->_set_error("channels must be an integer between 1 and 4");
|
|
}
|
|
|
|
my $img = Imager->new();
|
|
$img->{IMG} = i_transform2($opts->{width}, $opts->{height},
|
|
$channels, $code->code(),
|
|
$code->nregs(), $code->cregs(),
|
|
[ map { $_->{IMG} } @imgs ]);
|
|
if (!defined $img->{IMG}) {
|
|
$Imager::ERRSTR = Imager->_error_as_msg();
|
|
return;
|
|
}
|
|
|
|
return $img;
|
|
}
|
|
|
|
sub rubthrough {
|
|
my $self=shift;
|
|
my %opts=(tx => 0,ty => 0, @_);
|
|
|
|
unless ($self->{IMG}) {
|
|
$self->{ERRSTR}='empty input image';
|
|
return undef;
|
|
}
|
|
unless ($opts{src} && $opts{src}->{IMG}) {
|
|
$self->{ERRSTR}='empty input image for src';
|
|
return undef;
|
|
}
|
|
|
|
%opts = (src_minx => 0,
|
|
src_miny => 0,
|
|
src_maxx => $opts{src}->getwidth(),
|
|
src_maxy => $opts{src}->getheight(),
|
|
%opts);
|
|
|
|
unless (i_rubthru($self->{IMG}, $opts{src}->{IMG}, $opts{tx}, $opts{ty},
|
|
$opts{src_minx}, $opts{src_miny},
|
|
$opts{src_maxx}, $opts{src_maxy})) {
|
|
$self->_set_error($self->_error_as_msg());
|
|
return undef;
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
|
|
sub flip {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
my %xlate = (h=>0, v=>1, hv=>2, vh=>2);
|
|
my $dir;
|
|
return () unless defined $opts{'dir'} and defined $xlate{$opts{'dir'}};
|
|
$dir = $xlate{$opts{'dir'}};
|
|
return $self if i_flipxy($self->{IMG}, $dir);
|
|
return ();
|
|
}
|
|
|
|
sub rotate {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "rotate() called in void context - rotate() returns the rotated image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
if (defined $opts{right}) {
|
|
my $degrees = $opts{right};
|
|
if ($degrees < 0) {
|
|
$degrees += 360 * int(((-$degrees)+360)/360);
|
|
}
|
|
$degrees = $degrees % 360;
|
|
if ($degrees == 0) {
|
|
return $self->copy();
|
|
}
|
|
elsif ($degrees == 90 || $degrees == 180 || $degrees == 270) {
|
|
my $result = Imager->new();
|
|
if ($result->{IMG} = i_rotate90($self->{IMG}, $degrees)) {
|
|
return $result;
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "Parameter 'right' must be a multiple of 90 degrees";
|
|
return undef;
|
|
}
|
|
}
|
|
elsif (defined $opts{radians} || defined $opts{degrees}) {
|
|
my $amount = $opts{radians} || $opts{degrees} * 3.1415926535 / 180;
|
|
|
|
my $back = $opts{back};
|
|
my $result = Imager->new;
|
|
if ($back) {
|
|
$back = _color($back);
|
|
unless ($back) {
|
|
$self->_set_error(Imager->errstr);
|
|
return undef;
|
|
}
|
|
|
|
$result->{IMG} = i_rotate_exact($self->{IMG}, $amount, $back);
|
|
}
|
|
else {
|
|
$result->{IMG} = i_rotate_exact($self->{IMG}, $amount);
|
|
}
|
|
if ($result->{IMG}) {
|
|
return $result;
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return undef;
|
|
}
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "Only the 'right', 'radians' and 'degrees' parameters are available";
|
|
return undef;
|
|
}
|
|
}
|
|
|
|
sub matrix_transform {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "copy() called in void context - copy() returns the copied image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
if ($opts{matrix}) {
|
|
my $xsize = $opts{xsize} || $self->getwidth;
|
|
my $ysize = $opts{ysize} || $self->getheight;
|
|
|
|
my $result = Imager->new;
|
|
if ($opts{back}) {
|
|
$result->{IMG} = i_matrix_transform($self->{IMG}, $xsize, $ysize,
|
|
$opts{matrix}, $opts{back})
|
|
or return undef;
|
|
}
|
|
else {
|
|
$result->{IMG} = i_matrix_transform($self->{IMG}, $xsize, $ysize,
|
|
$opts{matrix})
|
|
or return undef;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "matrix parameter required";
|
|
return undef;
|
|
}
|
|
}
|
|
|
|
# blame Leolo :)
|
|
*yatf = \&matrix_transform;
|
|
|
|
# These two are supported for legacy code only
|
|
|
|
sub i_color_new {
|
|
return Imager::Color->new(@_);
|
|
}
|
|
|
|
sub i_color_set {
|
|
return Imager::Color::set(@_);
|
|
}
|
|
|
|
# Draws a box between the specified corner points.
|
|
sub box {
|
|
my $self=shift;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
my $dflcl=i_color_new(255,255,255,255);
|
|
my %opts=(color=>$dflcl,xmin=>0,ymin=>0,xmax=>$self->getwidth()-1,ymax=>$self->getheight()-1,@_);
|
|
|
|
if (exists $opts{'box'}) {
|
|
$opts{'xmin'} = _min($opts{'box'}->[0],$opts{'box'}->[2]);
|
|
$opts{'xmax'} = _max($opts{'box'}->[0],$opts{'box'}->[2]);
|
|
$opts{'ymin'} = _min($opts{'box'}->[1],$opts{'box'}->[3]);
|
|
$opts{'ymax'} = _max($opts{'box'}->[1],$opts{'box'}->[3]);
|
|
}
|
|
|
|
if ($opts{filled}) {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
i_box_filled($self->{IMG},$opts{xmin},$opts{ymin},$opts{xmax},
|
|
$opts{ymax}, $color);
|
|
}
|
|
elsif ($opts{fill}) {
|
|
unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) {
|
|
# assume it's a hash ref
|
|
require 'Imager/Fill.pm';
|
|
unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return undef;
|
|
}
|
|
}
|
|
i_box_cfill($self->{IMG},$opts{xmin},$opts{ymin},$opts{xmax},
|
|
$opts{ymax},$opts{fill}{fill});
|
|
}
|
|
else {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
i_box($self->{IMG},$opts{xmin},$opts{ymin},$opts{xmax},$opts{ymax},
|
|
$color);
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
sub arc {
|
|
my $self=shift;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
my $dflcl=i_color_new(255,255,255,255);
|
|
my %opts=(color=>$dflcl,
|
|
'r'=>_min($self->getwidth(),$self->getheight())/3,
|
|
'x'=>$self->getwidth()/2,
|
|
'y'=>$self->getheight()/2,
|
|
'd1'=>0, 'd2'=>361, @_);
|
|
if ($opts{aa}) {
|
|
if ($opts{fill}) {
|
|
unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) {
|
|
# assume it's a hash ref
|
|
require 'Imager/Fill.pm';
|
|
unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
}
|
|
i_arc_aa_cfill($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},$opts{'d1'},
|
|
$opts{'d2'}, $opts{fill}{fill});
|
|
}
|
|
else {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
if ($opts{d1} == 0 && $opts{d2} == 361 && $opts{aa}) {
|
|
i_circle_aa($self->{IMG}, $opts{'x'}, $opts{'y'}, $opts{'r'},
|
|
$color);
|
|
}
|
|
else {
|
|
i_arc_aa($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},
|
|
$opts{'d1'}, $opts{'d2'}, $color);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if ($opts{fill}) {
|
|
unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) {
|
|
# assume it's a hash ref
|
|
require 'Imager/Fill.pm';
|
|
unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
}
|
|
i_arc_cfill($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},$opts{'d1'},
|
|
$opts{'d2'}, $opts{fill}{fill});
|
|
}
|
|
else {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
i_arc($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},
|
|
$opts{'d1'}, $opts{'d2'}, $color);
|
|
}
|
|
}
|
|
|
|
return $self;
|
|
}
|
|
|
|
# Draws a line from one point to the other
|
|
# the endpoint is set if the endp parameter is set which it is by default.
|
|
# to turn of the endpoint being set use endp=>0 when calling line.
|
|
|
|
sub line {
|
|
my $self=shift;
|
|
my $dflcl=i_color_new(0,0,0,0);
|
|
my %opts=(color=>$dflcl,
|
|
endp => 1,
|
|
@_);
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
unless (exists $opts{x1} and exists $opts{y1}) { $self->{ERRSTR}='missing begining coord'; return undef; }
|
|
unless (exists $opts{x2} and exists $opts{y2}) { $self->{ERRSTR}='missing ending coord'; return undef; }
|
|
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
|
|
$opts{antialias} = $opts{aa} if defined $opts{aa};
|
|
if ($opts{antialias}) {
|
|
i_line_aa($self->{IMG},$opts{x1}, $opts{y1}, $opts{x2}, $opts{y2},
|
|
$color, $opts{endp});
|
|
} else {
|
|
i_line($self->{IMG},$opts{x1}, $opts{y1}, $opts{x2}, $opts{y2},
|
|
$color, $opts{endp});
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
# Draws a line between an ordered set of points - It more or less just transforms this
|
|
# into a list of lines.
|
|
|
|
sub polyline {
|
|
my $self=shift;
|
|
my ($pt,$ls,@points);
|
|
my $dflcl=i_color_new(0,0,0,0);
|
|
my %opts=(color=>$dflcl,@_);
|
|
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
if (exists($opts{points})) { @points=@{$opts{points}}; }
|
|
if (!exists($opts{points}) and exists($opts{'x'}) and exists($opts{'y'}) ) {
|
|
@points=map { [ $opts{'x'}->[$_],$opts{'y'}->[$_] ] } (0..(scalar @{$opts{'x'}}-1));
|
|
}
|
|
|
|
# print Dumper(\@points);
|
|
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
$opts{antialias} = $opts{aa} if defined $opts{aa};
|
|
if ($opts{antialias}) {
|
|
for $pt(@points) {
|
|
if (defined($ls)) {
|
|
i_line_aa($self->{IMG},$ls->[0],$ls->[1],$pt->[0],$pt->[1],$color, 1);
|
|
}
|
|
$ls=$pt;
|
|
}
|
|
} else {
|
|
for $pt(@points) {
|
|
if (defined($ls)) {
|
|
i_line($self->{IMG},$ls->[0],$ls->[1],$pt->[0],$pt->[1],$color,1);
|
|
}
|
|
$ls=$pt;
|
|
}
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
sub polygon {
|
|
my $self = shift;
|
|
my ($pt,$ls,@points);
|
|
my $dflcl = i_color_new(0,0,0,0);
|
|
my %opts = (color=>$dflcl, @_);
|
|
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
if (exists($opts{points})) {
|
|
$opts{'x'} = [ map { $_->[0] } @{$opts{points}} ];
|
|
$opts{'y'} = [ map { $_->[1] } @{$opts{points}} ];
|
|
}
|
|
|
|
if (!exists $opts{'x'} or !exists $opts{'y'}) {
|
|
$self->{ERRSTR} = 'no points array, or x and y arrays.'; return undef;
|
|
}
|
|
|
|
if ($opts{'fill'}) {
|
|
unless (UNIVERSAL::isa($opts{'fill'}, 'Imager::Fill')) {
|
|
# assume it's a hash ref
|
|
require 'Imager/Fill.pm';
|
|
unless ($opts{'fill'} = Imager::Fill->new(%{$opts{'fill'}})) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return undef;
|
|
}
|
|
}
|
|
i_poly_aa_cfill($self->{IMG}, $opts{'x'}, $opts{'y'},
|
|
$opts{'fill'}{'fill'});
|
|
}
|
|
else {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
i_poly_aa($self->{IMG}, $opts{'x'}, $opts{'y'}, $color);
|
|
}
|
|
|
|
return $self;
|
|
}
|
|
|
|
|
|
# this the multipoint bezier curve
|
|
# this is here more for testing that actual usage since
|
|
# this is not a good algorithm. Usually the curve would be
|
|
# broken into smaller segments and each done individually.
|
|
|
|
sub polybezier {
|
|
my $self=shift;
|
|
my ($pt,$ls,@points);
|
|
my $dflcl=i_color_new(0,0,0,0);
|
|
my %opts=(color=>$dflcl,@_);
|
|
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
if (exists $opts{points}) {
|
|
$opts{'x'}=map { $_->[0]; } @{$opts{'points'}};
|
|
$opts{'y'}=map { $_->[1]; } @{$opts{'points'}};
|
|
}
|
|
|
|
unless ( @{$opts{'x'}} and @{$opts{'x'}} == @{$opts{'y'}} ) {
|
|
$self->{ERRSTR}='Missing or invalid points.';
|
|
return;
|
|
}
|
|
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
i_bezier_multi($self->{IMG},$opts{'x'},$opts{'y'},$color);
|
|
return $self;
|
|
}
|
|
|
|
sub flood_fill {
|
|
my $self = shift;
|
|
my %opts = ( color=>Imager::Color->new(255, 255, 255), @_ );
|
|
my $rc;
|
|
|
|
unless (exists $opts{'x'} && exists $opts{'y'}) {
|
|
$self->{ERRSTR} = "missing seed x and y parameters";
|
|
return undef;
|
|
}
|
|
|
|
if ($opts{border}) {
|
|
my $border = _color($opts{border});
|
|
unless ($border) {
|
|
$self->_set_error($Imager::ERRSTR);
|
|
return;
|
|
}
|
|
if ($opts{fill}) {
|
|
unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) {
|
|
# assume it's a hash ref
|
|
require Imager::Fill;
|
|
unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
}
|
|
$rc = i_flood_cfill_border($self->{IMG}, $opts{'x'}, $opts{'y'},
|
|
$opts{fill}{fill}, $border);
|
|
}
|
|
else {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
$rc = i_flood_fill_border($self->{IMG}, $opts{'x'}, $opts{'y'},
|
|
$color, $border);
|
|
}
|
|
if ($rc) {
|
|
return $self;
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
if ($opts{fill}) {
|
|
unless (UNIVERSAL::isa($opts{fill}, 'Imager::Fill')) {
|
|
# assume it's a hash ref
|
|
require 'Imager/Fill.pm';
|
|
unless ($opts{fill} = Imager::Fill->new(%{$opts{fill}})) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
}
|
|
$rc = i_flood_cfill($self->{IMG}, $opts{'x'}, $opts{'y'}, $opts{fill}{fill});
|
|
}
|
|
else {
|
|
my $color = _color($opts{'color'});
|
|
unless ($color) {
|
|
$self->{ERRSTR} = $Imager::ERRSTR;
|
|
return;
|
|
}
|
|
$rc = i_flood_fill($self->{IMG}, $opts{'x'}, $opts{'y'}, $color);
|
|
}
|
|
if ($rc) {
|
|
return $self;
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = $self->_error_as_msg();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub setpixel {
|
|
my $self = shift;
|
|
|
|
my %opts = ( color=>$self->{fg} || NC(255, 255, 255), @_);
|
|
|
|
unless (exists $opts{'x'} && exists $opts{'y'}) {
|
|
$self->{ERRSTR} = 'missing x and y parameters';
|
|
return undef;
|
|
}
|
|
|
|
my $x = $opts{'x'};
|
|
my $y = $opts{'y'};
|
|
my $color = _color($opts{color})
|
|
or return undef;
|
|
if (ref $x && ref $y) {
|
|
unless (@$x == @$y) {
|
|
$self->{ERRSTR} = 'length of x and y mismatch';
|
|
return;
|
|
}
|
|
my $set = 0;
|
|
if ($color->isa('Imager::Color')) {
|
|
for my $i (0..$#{$opts{'x'}}) {
|
|
i_ppix($self->{IMG}, $x->[$i], $y->[$i], $color)
|
|
or ++$set;
|
|
}
|
|
}
|
|
else {
|
|
for my $i (0..$#{$opts{'x'}}) {
|
|
i_ppixf($self->{IMG}, $x->[$i], $y->[$i], $color)
|
|
or ++$set;
|
|
}
|
|
}
|
|
$set or return;
|
|
return $set;
|
|
}
|
|
else {
|
|
if ($color->isa('Imager::Color')) {
|
|
i_ppix($self->{IMG}, $x, $y, $color)
|
|
and return;
|
|
}
|
|
else {
|
|
i_ppixf($self->{IMG}, $x, $y, $color)
|
|
and return;
|
|
}
|
|
}
|
|
|
|
$self;
|
|
}
|
|
|
|
sub getpixel {
|
|
my $self = shift;
|
|
|
|
my %opts = ( "type"=>'8bit', @_);
|
|
|
|
unless (exists $opts{'x'} && exists $opts{'y'}) {
|
|
$self->{ERRSTR} = 'missing x and y parameters';
|
|
return undef;
|
|
}
|
|
|
|
my $x = $opts{'x'};
|
|
my $y = $opts{'y'};
|
|
if (ref $x && ref $y) {
|
|
unless (@$x == @$y) {
|
|
$self->{ERRSTR} = 'length of x and y mismatch';
|
|
return undef;
|
|
}
|
|
my @result;
|
|
if ($opts{"type"} eq '8bit') {
|
|
for my $i (0..$#{$opts{'x'}}) {
|
|
push(@result, i_get_pixel($self->{IMG}, $x->[$i], $y->[$i]));
|
|
}
|
|
}
|
|
else {
|
|
for my $i (0..$#{$opts{'x'}}) {
|
|
push(@result, i_gpixf($self->{IMG}, $x->[$i], $y->[$i]));
|
|
}
|
|
}
|
|
return wantarray ? @result : \@result;
|
|
}
|
|
else {
|
|
if ($opts{"type"} eq '8bit') {
|
|
return i_get_pixel($self->{IMG}, $x, $y);
|
|
}
|
|
else {
|
|
return i_gpixf($self->{IMG}, $x, $y);
|
|
}
|
|
}
|
|
|
|
$self;
|
|
}
|
|
|
|
sub getscanline {
|
|
my $self = shift;
|
|
my %opts = ( type => '8bit', x=>0, @_);
|
|
|
|
$self->_valid_image or return;
|
|
|
|
defined $opts{width} or $opts{width} = $self->getwidth - $opts{x};
|
|
|
|
unless (defined $opts{'y'}) {
|
|
$self->_set_error("missing y parameter");
|
|
return;
|
|
}
|
|
|
|
if ($opts{type} eq '8bit') {
|
|
return i_glin($self->{IMG}, $opts{x}, $opts{x}+$opts{width},
|
|
$opts{'y'});
|
|
}
|
|
elsif ($opts{type} eq 'float') {
|
|
return i_glinf($self->{IMG}, $opts{x}, $opts{x}+$opts{width},
|
|
$opts{'y'});
|
|
}
|
|
elsif ($opts{type} eq 'index') {
|
|
unless (i_img_type($self->{IMG})) {
|
|
$self->_set_error("type => index only valid on paletted images");
|
|
return;
|
|
}
|
|
return i_gpal($self->{IMG}, $opts{x}, $opts{x} + $opts{width},
|
|
$opts{'y'});
|
|
}
|
|
else {
|
|
$self->_set_error("invalid type parameter - must be '8bit' or 'float'");
|
|
return;
|
|
}
|
|
}
|
|
|
|
sub setscanline {
|
|
my $self = shift;
|
|
my %opts = ( x=>0, @_);
|
|
|
|
$self->_valid_image or return;
|
|
|
|
unless (defined $opts{'y'}) {
|
|
$self->_set_error("missing y parameter");
|
|
return;
|
|
}
|
|
|
|
if (!$opts{type}) {
|
|
if (ref $opts{pixels} && @{$opts{pixels}}) {
|
|
# try to guess the type
|
|
if ($opts{pixels}[0]->isa('Imager::Color')) {
|
|
$opts{type} = '8bit';
|
|
}
|
|
elsif ($opts{pixels}[0]->isa('Imager::Color::Float')) {
|
|
$opts{type} = 'float';
|
|
}
|
|
else {
|
|
$self->_set_error("missing type parameter and could not guess from pixels");
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
# default
|
|
$opts{type} = '8bit';
|
|
}
|
|
}
|
|
|
|
if ($opts{type} eq '8bit') {
|
|
if (ref $opts{pixels}) {
|
|
return i_plin($self->{IMG}, $opts{x}, $opts{'y'}, @{$opts{pixels}});
|
|
}
|
|
else {
|
|
return i_plin($self->{IMG}, $opts{x}, $opts{'y'}, $opts{pixels});
|
|
}
|
|
}
|
|
elsif ($opts{type} eq 'float') {
|
|
if (ref $opts{pixels}) {
|
|
return i_plinf($self->{IMG}, $opts{x}, $opts{'y'}, @{$opts{pixels}});
|
|
}
|
|
else {
|
|
return i_plinf($self->{IMG}, $opts{x}, $opts{'y'}, $opts{pixels});
|
|
}
|
|
}
|
|
elsif ($opts{type} eq 'index') {
|
|
if (ref $opts{pixels}) {
|
|
return i_ppal($self->{IMG}, $opts{x}, $opts{'y'}, @{$opts{pixels}});
|
|
}
|
|
else {
|
|
return i_ppal_p($self->{IMG}, $opts{x}, $opts{'y'}, $opts{pixels});
|
|
}
|
|
}
|
|
else {
|
|
$self->_set_error("invalid type parameter - must be '8bit' or 'float'");
|
|
return;
|
|
}
|
|
}
|
|
|
|
sub getsamples {
|
|
my $self = shift;
|
|
my %opts = ( type => '8bit', x=>0, @_);
|
|
|
|
defined $opts{width} or $opts{width} = $self->getwidth - $opts{x};
|
|
|
|
unless (defined $opts{'y'}) {
|
|
$self->_set_error("missing y parameter");
|
|
return;
|
|
}
|
|
|
|
unless ($opts{channels}) {
|
|
$opts{channels} = [ 0 .. $self->getchannels()-1 ];
|
|
}
|
|
|
|
if ($opts{type} eq '8bit') {
|
|
return i_gsamp($self->{IMG}, $opts{x}, $opts{x}+$opts{width},
|
|
$opts{y}, @{$opts{channels}});
|
|
}
|
|
elsif ($opts{type} eq 'float') {
|
|
return i_gsampf($self->{IMG}, $opts{x}, $opts{x}+$opts{width},
|
|
$opts{y}, @{$opts{channels}});
|
|
}
|
|
else {
|
|
$self->_set_error("invalid type parameter - must be '8bit' or 'float'");
|
|
return;
|
|
}
|
|
}
|
|
|
|
# make an identity matrix of the given size
|
|
sub _identity {
|
|
my ($size) = @_;
|
|
|
|
my $matrix = [ map { [ (0) x $size ] } 1..$size ];
|
|
for my $c (0 .. ($size-1)) {
|
|
$matrix->[$c][$c] = 1;
|
|
}
|
|
return $matrix;
|
|
}
|
|
|
|
# general function to convert an image
|
|
sub convert {
|
|
my ($self, %opts) = @_;
|
|
my $matrix;
|
|
|
|
unless (defined wantarray) {
|
|
my @caller = caller;
|
|
warn "convert() called in void context - convert() returns the converted image at $caller[1] line $caller[2]\n";
|
|
return;
|
|
}
|
|
|
|
# the user can either specify a matrix or preset
|
|
# the matrix overrides the preset
|
|
if (!exists($opts{matrix})) {
|
|
unless (exists($opts{preset})) {
|
|
$self->{ERRSTR} = "convert() needs a matrix or preset";
|
|
return;
|
|
}
|
|
else {
|
|
if ($opts{preset} eq 'gray' || $opts{preset} eq 'grey') {
|
|
# convert to greyscale, keeping the alpha channel if any
|
|
if ($self->getchannels == 3) {
|
|
$matrix = [ [ 0.222, 0.707, 0.071 ] ];
|
|
}
|
|
elsif ($self->getchannels == 4) {
|
|
# preserve the alpha channel
|
|
$matrix = [ [ 0.222, 0.707, 0.071, 0 ],
|
|
[ 0, 0, 0, 1 ] ];
|
|
}
|
|
else {
|
|
# an identity
|
|
$matrix = _identity($self->getchannels);
|
|
}
|
|
}
|
|
elsif ($opts{preset} eq 'noalpha') {
|
|
# strip the alpha channel
|
|
if ($self->getchannels == 2 or $self->getchannels == 4) {
|
|
$matrix = _identity($self->getchannels);
|
|
pop(@$matrix); # lose the alpha entry
|
|
}
|
|
else {
|
|
$matrix = _identity($self->getchannels);
|
|
}
|
|
}
|
|
elsif ($opts{preset} eq 'red' || $opts{preset} eq 'channel0') {
|
|
# extract channel 0
|
|
$matrix = [ [ 1 ] ];
|
|
}
|
|
elsif ($opts{preset} eq 'green' || $opts{preset} eq 'channel1') {
|
|
$matrix = [ [ 0, 1 ] ];
|
|
}
|
|
elsif ($opts{preset} eq 'blue' || $opts{preset} eq 'channel2') {
|
|
$matrix = [ [ 0, 0, 1 ] ];
|
|
}
|
|
elsif ($opts{preset} eq 'alpha') {
|
|
if ($self->getchannels == 2 or $self->getchannels == 4) {
|
|
$matrix = [ [ (0) x ($self->getchannels-1), 1 ] ];
|
|
}
|
|
else {
|
|
# the alpha is just 1 <shrug>
|
|
$matrix = [ [ (0) x $self->getchannels, 1 ] ];
|
|
}
|
|
}
|
|
elsif ($opts{preset} eq 'rgb') {
|
|
if ($self->getchannels == 1) {
|
|
$matrix = [ [ 1 ], [ 1 ], [ 1 ] ];
|
|
}
|
|
elsif ($self->getchannels == 2) {
|
|
# preserve the alpha channel
|
|
$matrix = [ [ 1, 0 ], [ 1, 0 ], [ 1, 0 ], [ 0, 1 ] ];
|
|
}
|
|
else {
|
|
$matrix = _identity($self->getchannels);
|
|
}
|
|
}
|
|
elsif ($opts{preset} eq 'addalpha') {
|
|
if ($self->getchannels == 1) {
|
|
$matrix = _identity(2);
|
|
}
|
|
elsif ($self->getchannels == 3) {
|
|
$matrix = _identity(4);
|
|
}
|
|
else {
|
|
$matrix = _identity($self->getchannels);
|
|
}
|
|
}
|
|
else {
|
|
$self->{ERRSTR} = "Unknown convert preset $opts{preset}";
|
|
return undef;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
$matrix = $opts{matrix};
|
|
}
|
|
|
|
my $new = Imager->new;
|
|
$new->{IMG} = i_convert($self->{IMG}, $matrix);
|
|
unless ($new->{IMG}) {
|
|
# most likely a bad matrix
|
|
$self->{ERRSTR} = _error_as_msg();
|
|
return undef;
|
|
}
|
|
return $new;
|
|
}
|
|
|
|
|
|
# general function to map an image through lookup tables
|
|
|
|
sub map {
|
|
my ($self, %opts) = @_;
|
|
my @chlist = qw( red green blue alpha );
|
|
|
|
if (!exists($opts{'maps'})) {
|
|
# make maps from channel maps
|
|
my $chnum;
|
|
for $chnum (0..$#chlist) {
|
|
if (exists $opts{$chlist[$chnum]}) {
|
|
$opts{'maps'}[$chnum] = $opts{$chlist[$chnum]};
|
|
} elsif (exists $opts{'all'}) {
|
|
$opts{'maps'}[$chnum] = $opts{'all'};
|
|
}
|
|
}
|
|
}
|
|
if ($opts{'maps'} and $self->{IMG}) {
|
|
i_map($self->{IMG}, $opts{'maps'} );
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
sub difference {
|
|
my ($self, %opts) = @_;
|
|
|
|
defined $opts{mindist} or $opts{mindist} = 0;
|
|
|
|
defined $opts{other}
|
|
or return $self->_set_error("No 'other' parameter supplied");
|
|
defined $opts{other}{IMG}
|
|
or return $self->_set_error("No image data in 'other' image");
|
|
|
|
$self->{IMG}
|
|
or return $self->_set_error("No image data");
|
|
|
|
my $result = Imager->new;
|
|
$result->{IMG} = i_diff_image($self->{IMG}, $opts{other}{IMG},
|
|
$opts{mindist})
|
|
or return $self->_set_error($self->_error_as_msg());
|
|
|
|
return $result;
|
|
}
|
|
|
|
# destructive border - image is shrunk by one pixel all around
|
|
|
|
sub border {
|
|
my ($self,%opts)=@_;
|
|
my($tx,$ty)=($self->getwidth()-1,$self->getheight()-1);
|
|
$self->polyline('x'=>[0,$tx,$tx,0,0],'y'=>[0,0,$ty,$ty,0],%opts);
|
|
}
|
|
|
|
|
|
# Get the width of an image
|
|
|
|
sub getwidth {
|
|
my $self = shift;
|
|
if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; }
|
|
return (i_img_info($self->{IMG}))[0];
|
|
}
|
|
|
|
# Get the height of an image
|
|
|
|
sub getheight {
|
|
my $self = shift;
|
|
if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; }
|
|
return (i_img_info($self->{IMG}))[1];
|
|
}
|
|
|
|
# Get number of channels in an image
|
|
|
|
sub getchannels {
|
|
my $self = shift;
|
|
if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; }
|
|
return i_img_getchannels($self->{IMG});
|
|
}
|
|
|
|
# Get channel mask
|
|
|
|
sub getmask {
|
|
my $self = shift;
|
|
if (!defined($self->{IMG})) { $self->{ERRSTR} = 'image is empty'; return undef; }
|
|
return i_img_getmask($self->{IMG});
|
|
}
|
|
|
|
# Set channel mask
|
|
|
|
sub setmask {
|
|
my $self = shift;
|
|
my %opts = @_;
|
|
if (!defined($self->{IMG})) {
|
|
$self->{ERRSTR} = 'image is empty';
|
|
return undef;
|
|
}
|
|
unless (defined $opts{mask}) {
|
|
$self->_set_error("mask parameter required");
|
|
return;
|
|
}
|
|
i_img_setmask( $self->{IMG} , $opts{mask} );
|
|
|
|
1;
|
|
}
|
|
|
|
# Get number of colors in an image
|
|
|
|
sub getcolorcount {
|
|
my $self=shift;
|
|
my %opts=('maxcolors'=>2**30,@_);
|
|
if (!defined($self->{IMG})) { $self->{ERRSTR}='image is empty'; return undef; }
|
|
my $rc=i_count_colors($self->{IMG},$opts{'maxcolors'});
|
|
return ($rc==-1? undef : $rc);
|
|
}
|
|
|
|
# Returns a reference to a hash. The keys are colour named (packed) and the
|
|
# values are the number of pixels in this colour.
|
|
sub getcolorusagehash {
|
|
my $self = shift;
|
|
|
|
my %opts = ( maxcolors => 2**30, @_ );
|
|
my $max_colors = $opts{maxcolors};
|
|
unless (defined $max_colors && $max_colors > 0) {
|
|
$self->_set_error('maxcolors must be a positive integer');
|
|
return;
|
|
}
|
|
|
|
unless (defined $self->{IMG}) {
|
|
$self->_set_error('empty input image');
|
|
return;
|
|
}
|
|
|
|
my $channels= $self->getchannels;
|
|
# We don't want to look at the alpha channel, because some gifs using it
|
|
# doesn't define it for every colour (but only for some)
|
|
$channels -= 1 if $channels == 2 or $channels == 4;
|
|
my %color_use;
|
|
my $height = $self->getheight;
|
|
for my $y (0 .. $height - 1) {
|
|
my $colors = $self->getsamples('y' => $y, channels => [ 0 .. $channels - 1 ]);
|
|
while (length $colors) {
|
|
$color_use{ substr($colors, 0, $channels, '') }++;
|
|
}
|
|
keys %color_use > $max_colors
|
|
and return;
|
|
}
|
|
return \%color_use;
|
|
}
|
|
|
|
# This will return a ordered array of the colour usage. Kind of the sorted
|
|
# version of the values of the hash returned by getcolorusagehash.
|
|
# You might want to add safety checks and change the names, etc...
|
|
sub getcolorusage {
|
|
my $self = shift;
|
|
|
|
my %opts = ( maxcolors => 2**30, @_ );
|
|
my $max_colors = $opts{maxcolors};
|
|
unless (defined $max_colors && $max_colors > 0) {
|
|
$self->_set_error('maxcolors must be a positive integer');
|
|
return;
|
|
}
|
|
|
|
unless (defined $self->{IMG}) {
|
|
$self->_set_error('empty input image');
|
|
return undef;
|
|
}
|
|
|
|
return i_get_anonymous_color_histo($self->{IMG}, $max_colors);
|
|
}
|
|
|
|
# draw string to an image
|
|
|
|
sub string {
|
|
my $self = shift;
|
|
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
|
|
|
|
my %input=('x'=>0, 'y'=>0, @_);
|
|
defined($input{string}) or $input{string} = $input{text};
|
|
|
|
unless(defined $input{string}) {
|
|
$self->{ERRSTR}="missing required parameter 'string'";
|
|
return;
|
|
}
|
|
|
|
unless($input{font}) {
|
|
$self->{ERRSTR}="missing required parameter 'font'";
|
|
return;
|
|
}
|
|
|
|
unless ($input{font}->draw(image=>$self, %input)) {
|
|
return;
|
|
}
|
|
|
|
return $self;
|
|
}
|
|
|
|
sub align_string {
|
|
my $self = shift;
|
|
|
|
my $img;
|
|
if (ref $self) {
|
|
unless ($self->{IMG}) {
|
|
$self->{ERRSTR}='empty input image';
|
|
return;
|
|
}
|
|
$img = $self;
|
|
}
|
|
else {
|
|
$img = undef;
|
|
}
|
|
|
|
my %input=('x'=>0, 'y'=>0, @_);
|
|
$input{string}||=$input{text};
|
|
|
|
unless(exists $input{string}) {
|
|
$self->_set_error("missing required parameter 'string'");
|
|
return;
|
|
}
|
|
|
|
unless($input{font}) {
|
|
$self->_set_error("missing required parameter 'font'");
|
|
return;
|
|
}
|
|
|
|
my @result;
|
|
unless (@result = $input{font}->align(image=>$img, %input)) {
|
|
return;
|
|
}
|
|
|
|
return wantarray ? @result : $result[0];
|
|
}
|
|
|
|
my @file_limit_names = qw/width height bytes/;
|
|
|
|
sub set_file_limits {
|
|
shift;
|
|
|
|
my %opts = @_;
|
|
my %values;
|
|
|
|
if ($opts{reset}) {
|
|
@values{@file_limit_names} = (0) x @file_limit_names;
|
|
}
|
|
else {
|
|
@values{@file_limit_names} = i_get_image_file_limits();
|
|
}
|
|
|
|
for my $key (keys %values) {
|
|
defined $opts{$key} and $values{$key} = $opts{$key};
|
|
}
|
|
|
|
i_set_image_file_limits($values{width}, $values{height}, $values{bytes});
|
|
}
|
|
|
|
sub get_file_limits {
|
|
i_get_image_file_limits();
|
|
}
|
|
|
|
# Shortcuts that can be exported
|
|
|
|
sub newcolor { Imager::Color->new(@_); }
|
|
sub newfont { Imager::Font->new(@_); }
|
|
|
|
*NC=*newcolour=*newcolor;
|
|
*NF=*newfont;
|
|
|
|
*open=\&read;
|
|
*circle=\&arc;
|
|
|
|
|
|
#### Utility routines
|
|
|
|
sub errstr {
|
|
ref $_[0] ? $_[0]->{ERRSTR} : $ERRSTR
|
|
}
|
|
|
|
sub _set_error {
|
|
my ($self, $msg) = @_;
|
|
|
|
if (ref $self) {
|
|
$self->{ERRSTR} = $msg;
|
|
}
|
|
else {
|
|
$ERRSTR = $msg;
|
|
}
|
|
return;
|
|
}
|
|
|
|
# Default guess for the type of an image from extension
|
|
|
|
sub def_guess_type {
|
|
my $name=lc(shift);
|
|
my $ext;
|
|
$ext=($name =~ m/\.([^\.]+)$/)[0];
|
|
return 'tiff' if ($ext =~ m/^tiff?$/);
|
|
return 'jpeg' if ($ext =~ m/^jpe?g$/);
|
|
return 'pnm' if ($ext =~ m/^p[pgb]m$/);
|
|
return 'png' if ($ext eq "png");
|
|
return 'bmp' if ($ext eq "bmp" || $ext eq "dib");
|
|
return 'tga' if ($ext eq "tga");
|
|
return 'sgi' if ($ext eq "rgb" || $ext eq "bw" || $ext eq "sgi" || $ext eq "rgba");
|
|
return 'gif' if ($ext eq "gif");
|
|
return 'raw' if ($ext eq "raw");
|
|
return lc $ext; # best guess
|
|
return ();
|
|
}
|
|
|
|
# get the minimum of a list
|
|
|
|
sub _min {
|
|
my $mx=shift;
|
|
for(@_) { if ($_<$mx) { $mx=$_; }}
|
|
return $mx;
|
|
}
|
|
|
|
# get the maximum of a list
|
|
|
|
sub _max {
|
|
my $mx=shift;
|
|
for(@_) { if ($_>$mx) { $mx=$_; }}
|
|
return $mx;
|
|
}
|
|
|
|
# string stuff for iptc headers
|
|
|
|
sub _clean {
|
|
my($str)=$_[0];
|
|
$str = substr($str,3);
|
|
$str =~ s/[\n\r]//g;
|
|
$str =~ s/\s+/ /g;
|
|
$str =~ s/^\s//;
|
|
$str =~ s/\s$//;
|
|
return $str;
|
|
}
|
|
|
|
# A little hack to parse iptc headers.
|
|
|
|
sub parseiptc {
|
|
my $self=shift;
|
|
my(@sar,$item,@ar);
|
|
my($caption,$photogr,$headln,$credit);
|
|
|
|
my $str=$self->{IPTCRAW};
|
|
|
|
defined $str
|
|
or return;
|
|
|
|
@ar=split(/8BIM/,$str);
|
|
|
|
my $i=0;
|
|
foreach (@ar) {
|
|
if (/^\004\004/) {
|
|
@sar=split(/\034\002/);
|
|
foreach $item (@sar) {
|
|
if ($item =~ m/^x/) {
|
|
$caption = _clean($item);
|
|
$i++;
|
|
}
|
|
if ($item =~ m/^P/) {
|
|
$photogr = _clean($item);
|
|
$i++;
|
|
}
|
|
if ($item =~ m/^i/) {
|
|
$headln = _clean($item);
|
|
$i++;
|
|
}
|
|
if ($item =~ m/^n/) {
|
|
$credit = _clean($item);
|
|
$i++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return (caption=>$caption,photogr=>$photogr,headln=>$headln,credit=>$credit);
|
|
}
|
|
|
|
sub Inline {
|
|
my ($lang) = @_;
|
|
|
|
$lang eq 'C'
|
|
or die "Only C language supported";
|
|
|
|
require Imager::ExtUtils;
|
|
return Imager::ExtUtils->inline_config;
|
|
}
|
|
|
|
1;
|
|
__END__
|
|
# Below is the stub of documentation for your module. You better edit it!
|
|
|
|
=head1 NAME
|
|
|
|
Imager - Perl extension for Generating 24 bit Images
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
# Thumbnail example
|
|
|
|
#!/usr/bin/perl -w
|
|
use strict;
|
|
use Imager;
|
|
|
|
die "Usage: thumbmake.pl filename\n" if !-f $ARGV[0];
|
|
my $file = shift;
|
|
|
|
my $format;
|
|
|
|
my $img = Imager->new();
|
|
# see Imager::Files for information on the read() method
|
|
$img->read(file=>$file) or die $img->errstr();
|
|
|
|
$file =~ s/\.[^.]*$//;
|
|
|
|
# Create smaller version
|
|
# documented in Imager::Transformations
|
|
my $thumb = $img->scale(scalefactor=>.3);
|
|
|
|
# Autostretch individual channels
|
|
$thumb->filter(type=>'autolevels');
|
|
|
|
# try to save in one of these formats
|
|
SAVE:
|
|
|
|
for $format ( qw( png gif jpg tiff ppm ) ) {
|
|
# Check if given format is supported
|
|
if ($Imager::formats{$format}) {
|
|
$file.="_low.$format";
|
|
print "Storing image as: $file\n";
|
|
# documented in Imager::Files
|
|
$thumb->write(file=>$file) or
|
|
die $thumb->errstr;
|
|
last SAVE;
|
|
}
|
|
}
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
Imager is a module for creating and altering images. It can read and
|
|
write various image formats, draw primitive shapes like lines,and
|
|
polygons, blend multiple images together in various ways, scale, crop,
|
|
render text and more.
|
|
|
|
=head2 Overview of documentation
|
|
|
|
=over
|
|
|
|
=item *
|
|
|
|
Imager - This document - Synopsis, Example, Table of Contents and
|
|
Overview.
|
|
|
|
=item *
|
|
|
|
L<Imager::Tutorial> - a brief introduction to Imager.
|
|
|
|
=item *
|
|
|
|
L<Imager::Cookbook> - how to do various things with Imager.
|
|
|
|
=item *
|
|
|
|
L<Imager::ImageTypes> - Basics of constructing image objects with
|
|
C<new()>: Direct type/virtual images, RGB(A)/paletted images,
|
|
8/16/double bits/channel, color maps, channel masks, image tags, color
|
|
quantization. Also discusses basic image information methods.
|
|
|
|
=item *
|
|
|
|
L<Imager::Files> - IO interaction, reading/writing images, format
|
|
specific tags.
|
|
|
|
=item *
|
|
|
|
L<Imager::Draw> - Drawing Primitives, lines, boxes, circles, arcs,
|
|
flood fill.
|
|
|
|
=item *
|
|
|
|
L<Imager::Color> - Color specification.
|
|
|
|
=item *
|
|
|
|
L<Imager::Fill> - Fill pattern specification.
|
|
|
|
=item *
|
|
|
|
L<Imager::Font> - General font rendering, bounding boxes and font
|
|
metrics.
|
|
|
|
=item *
|
|
|
|
L<Imager::Transformations> - Copying, scaling, cropping, flipping,
|
|
blending, pasting, convert and map.
|
|
|
|
=item *
|
|
|
|
L<Imager::Engines> - Programmable transformations through
|
|
C<transform()>, C<transform2()> and C<matrix_transform()>.
|
|
|
|
=item *
|
|
|
|
L<Imager::Filters> - Filters, sharpen, blur, noise, convolve etc. and
|
|
filter plugins.
|
|
|
|
=item *
|
|
|
|
L<Imager::Expr> - Expressions for evaluation engine used by
|
|
transform2().
|
|
|
|
=item *
|
|
|
|
L<Imager::Matrix2d> - Helper class for affine transformations.
|
|
|
|
=item *
|
|
|
|
L<Imager::Fountain> - Helper for making gradient profiles.
|
|
|
|
=item *
|
|
|
|
L<Imager::API> - using Imager's C API
|
|
|
|
=item *
|
|
|
|
L<Imager::APIRef> - API function reference
|
|
|
|
=item *
|
|
|
|
L<Imager::Inline> - using Imager's C API from Inline::C
|
|
|
|
=item *
|
|
|
|
L<Imager::ExtUtils> - tools to get access to Imager's C API.
|
|
|
|
=back
|
|
|
|
=head2 Basic Overview
|
|
|
|
An Image object is created with C<$img = Imager-E<gt>new()>.
|
|
Examples:
|
|
|
|
$img=Imager->new(); # create empty image
|
|
$img->read(file=>'lena.png',type=>'png') or # read image from file
|
|
die $img->errstr(); # give an explanation
|
|
# if something failed
|
|
|
|
or if you want to create an empty image:
|
|
|
|
$img=Imager->new(xsize=>400,ysize=>300,channels=>4);
|
|
|
|
This example creates a completely black image of width 400 and height
|
|
300 and 4 channels.
|
|
|
|
=head1 ERROR HANDLING
|
|
|
|
In general a method will return false when it fails, if it does use the errstr() method to find out why:
|
|
|
|
=over
|
|
|
|
=item errstr
|
|
|
|
Returns the last error message in that context.
|
|
|
|
If the last error you received was from calling an object method, such
|
|
as read, call errstr() as an object method to find out why:
|
|
|
|
my $image = Imager->new;
|
|
$image->read(file => 'somefile.gif')
|
|
or die $image->errstr;
|
|
|
|
If it was a class method then call errstr() as a class method:
|
|
|
|
my @imgs = Imager->read_multi(file => 'somefile.gif')
|
|
or die Imager->errstr;
|
|
|
|
Note that in some cases object methods are implemented in terms of
|
|
class methods so a failing object method may set both.
|
|
|
|
=back
|
|
|
|
The C<Imager-E<gt>new> method is described in detail in
|
|
L<Imager::ImageTypes>.
|
|
|
|
=head1 METHOD INDEX
|
|
|
|
Where to find information on methods for Imager class objects.
|
|
|
|
addcolors() - L<Imager::ImageTypes/addcolors>
|
|
|
|
addtag() - L<Imager::ImageTypes/addtag> - add image tags
|
|
|
|
align_string() - L<Imager::Draw/align_string>
|
|
|
|
arc() - L<Imager::Draw/arc>
|
|
|
|
bits() - L<Imager::ImageTypes/bits> - number of bits per sample for the
|
|
image
|
|
|
|
box() - L<Imager::Draw/box>
|
|
|
|
circle() - L<Imager::Draw/circle>
|
|
|
|
colorcount() - L<Imager::Draw/colorcount>
|
|
|
|
convert() - L<Imager::Transformations/"Color transformations"> -
|
|
transform the color space
|
|
|
|
copy() - L<Imager::Transformations/copy>
|
|
|
|
crop() - L<Imager::Transformations/crop> - extract part of an image
|
|
|
|
def_guess_type() - L<Imager::Files/def_guess_type>
|
|
|
|
deltag() - L<Imager::ImageTypes/deltag> - delete image tags
|
|
|
|
difference() - L<Imager::Filters/"Image Difference">
|
|
|
|
errstr() - L<"Basic Overview">
|
|
|
|
filter() - L<Imager::Filters>
|
|
|
|
findcolor() - L<Imager::ImageTypes/findcolor> - search the image palette, if it
|
|
has one
|
|
|
|
flip() - L<Imager::Transformations/flip>
|
|
|
|
flood_fill() - L<Imager::Draw/flood_fill>
|
|
|
|
getchannels() - L<Imager::ImageTypes/getchannels>
|
|
|
|
getcolorcount() - L<Imager::ImageTypes/getcolorcount>
|
|
|
|
getcolors() - L<Imager::ImageTypes/getcolors> - get colors from the image
|
|
palette, if it has one
|
|
|
|
getcolorusage() - L<Imager::ImageTypes/getcolorusage>
|
|
|
|
getcolorusagehash() - L<Imager::ImageTypes/getcolorusagehash>
|
|
|
|
get_file_limits() - L<Imager::Files/"Limiting the sizes of images you read">
|
|
|
|
getheight() - L<Imager::ImageTypes/getwidth>
|
|
|
|
getmask() - L<Imager::ImageTypes/getmask>
|
|
|
|
getpixel() - L<Imager::Draw/getpixel>
|
|
|
|
getsamples() - L<Imager::Draw/getsamples>
|
|
|
|
getscanline() - L<Imager::Draw/getscanline>
|
|
|
|
getwidth() - L<Imager::ImageTypes/getwidth>
|
|
|
|
img_set() - L<Imager::ImageTypes/img_set>
|
|
|
|
init() - L<Imager::ImageTypes/init>
|
|
|
|
line() - L<Imager::Draw/line>
|
|
|
|
load_plugin() - L<Imager::Filters/load_plugin>
|
|
|
|
map() - L<Imager::Transformations/"Color Mappings"> - remap color
|
|
channel values
|
|
|
|
masked() - L<Imager::ImageTypes/masked> - make a masked image
|
|
|
|
matrix_transform() - L<Imager::Engines/matrix_transform>
|
|
|
|
maxcolors() - L<Imager::ImageTypes/maxcolors>
|
|
|
|
NC() - L<Imager::Handy/NC>
|
|
|
|
new() - L<Imager::ImageTypes/new>
|
|
|
|
newcolor() - L<Imager::Handy/newcolor>
|
|
|
|
newcolour() - L<Imager::Handy/newcolour>
|
|
|
|
newfont() - L<Imager::Handy/newfont>
|
|
|
|
NF() - L<Imager::Handy/NF>
|
|
|
|
open() - L<Imager::Files> - an alias for read()
|
|
|
|
parseiptc() - L<Imager::Files/parseiptc> - parse IPTC data from a JPEG
|
|
image
|
|
|
|
paste() - L<Imager::Transformations/paste> - draw an image onto an image
|
|
|
|
polygon() - L<Imager::Draw/polygon>
|
|
|
|
polyline() - L<Imager::Draw/polyline>
|
|
|
|
read() - L<Imager::Files> - read a single image from an image file
|
|
|
|
read_multi() - L<Imager::Files> - read multiple images from an image
|
|
file
|
|
|
|
register_filter() - L<Imager::Filters/register_filter>
|
|
|
|
register_reader() - L<Imager::Filters/register_reader>
|
|
|
|
register_writer() - L<Imager::Filters/register_writer>
|
|
|
|
rotate() - L<Imager::Transformations/rotate>
|
|
|
|
rubthrough() - L<Imager::Transformations/rubthrough> - draw an image onto an
|
|
image and use the alpha channel
|
|
|
|
scale() - L<Imager::Transformations/scale>
|
|
|
|
scaleX() - L<Imager::Transformations/scaleX>
|
|
|
|
scaleY() - L<Imager::Transformations/scaleY>
|
|
|
|
setcolors() - L<Imager::ImageTypes/setcolors> - set palette colors in
|
|
a paletted image
|
|
|
|
set_file_limits() - L<Imager::Files/"Limiting the sizes of images you read">
|
|
|
|
setmask() - L<Imager::ImageTypes/setmask>
|
|
|
|
setpixel() - L<Imager::Draw/setpixel>
|
|
|
|
setscanline() - L<Imager::Draw/setscanline>
|
|
|
|
settag() - L<Imager::ImageTypes/settag>
|
|
|
|
string() - L<Imager::Draw/string> - draw text on an image
|
|
|
|
tags() - L<Imager::ImageTypes/tags> - fetch image tags
|
|
|
|
to_paletted() - L<Imager::ImageTypes/to_paletted>
|
|
|
|
to_rgb16() - L<Imager::ImageTypes/to_rgb16>
|
|
|
|
to_rgb8() - L<Imager::ImageTypes/to_rgb8>
|
|
|
|
transform() - L<Imager::Engines/"transform">
|
|
|
|
transform2() - L<Imager::Engines/"transform2">
|
|
|
|
type() - L<Imager::ImageTypes/type> - type of image (direct vs paletted)
|
|
|
|
unload_plugin() - L<Imager::Filters/unload_plugin>
|
|
|
|
virtual() - L<Imager::ImageTypes/virtual> - whether the image has it's own
|
|
data
|
|
|
|
write() - L<Imager::Files> - write an image to a file
|
|
|
|
write_multi() - L<Imager::Files> - write multiple image to an image
|
|
file.
|
|
|
|
=head1 CONCEPT INDEX
|
|
|
|
animated GIF - L<Imager::File/"Writing an animated GIF">
|
|
|
|
aspect ratio - L<Imager::ImageTypes/i_xres>,
|
|
L<Imager::ImageTypes/i_yres>, L<Imager::ImageTypes/i_aspect_only>
|
|
|
|
blend - alpha blending one image onto another
|
|
L<Imager::Transformations/rubthrough>
|
|
|
|
blur - L<Imager::Filters/guassian>, L<Imager::Filters/conv>
|
|
|
|
boxes, drawing - L<Imager::Draw/box>
|
|
|
|
changes between image - L<Imager::Filter/"Image Difference">
|
|
|
|
color - L<Imager::Color>
|
|
|
|
color names - L<Imager::Color>, L<Imager::Color::Table>
|
|
|
|
combine modes - L<Imager::Fill/combine>
|
|
|
|
compare images - L<Imager::Filter/"Image Difference">
|
|
|
|
contrast - L<Imager::Filter/contrast>, L<Imager::Filter/autolevels>
|
|
|
|
convolution - L<Imager::Filter/conv>
|
|
|
|
cropping - L<Imager::Transformations/crop>
|
|
|
|
CUR files - L<Imager::Files/"ICO (Microsoft Windows Icon) and CUR (Microsoft Windows Cursor)">
|
|
|
|
C<diff> images - L<Imager::Filter/"Image Difference">
|
|
|
|
dpi - L<Imager::ImageTypes/i_xres>,
|
|
L<Imager::Cookbook/"Image spatial resolution">
|
|
|
|
drawing boxes - L<Imager::Draw/box>
|
|
|
|
drawing lines - L<Imager::Draw/line>
|
|
|
|
drawing text - L<Imager::Draw/string>, L<Imager::Draw/align_string>
|
|
|
|
error message - L<"Basic Overview">
|
|
|
|
files, font - L<Imager::Font>
|
|
|
|
files, image - L<Imager::Files>
|
|
|
|
filling, types of fill - L<Imager::Fill>
|
|
|
|
filling, boxes - L<Imager::Draw/box>
|
|
|
|
filling, flood fill - L<Imager::Draw/flood_fill>
|
|
|
|
flood fill - L<Imager::Draw/flood_fill>
|
|
|
|
fonts - L<Imager::Font>
|
|
|
|
fonts, drawing with - L<Imager::Draw/string>,
|
|
L<Imager::Draw/align_string>, L<Imager::Font::Wrap>
|
|
|
|
fonts, metrics - L<Imager::Font/bounding_box>, L<Imager::Font::BBox>
|
|
|
|
fonts, multiple master - L<Imager::Font/"MULTIPLE MASTER FONTS">
|
|
|
|
fountain fill - L<Imager::Fill/"Fountain fills">,
|
|
L<Imager::Filters/fountain>, L<Imager::Fountain>,
|
|
L<Imager::Filters/gradgen>
|
|
|
|
GIF files - L<Imager::Files/"GIF">
|
|
|
|
GIF files, animated - L<Imager::File/"Writing an animated GIF">
|
|
|
|
gradient fill - L<Imager::Fill/"Fountain fills">,
|
|
L<Imager::Filters/fountain>, L<Imager::Fountain>,
|
|
L<Imager::Filters/gradgen>
|
|
|
|
guassian blur - L<Imager::Filter/guassian>
|
|
|
|
hatch fills - L<Imager::Fill/"Hatched fills">
|
|
|
|
ICO files - L<Imager::Files/"ICO (Microsoft Windows Icon) and CUR (Microsoft Windows Cursor)">
|
|
|
|
invert image - L<Imager::Filter/hardinvert>
|
|
|
|
JPEG - L<Imager::Files/"JPEG">
|
|
|
|
limiting image sizes - L<Imager::Files/"Limiting the sizes of images you read">
|
|
|
|
lines, drawing - L<Imager::Draw/line>
|
|
|
|
matrix - L<Imager::Matrix2d>,
|
|
L<Imager::Transformations/"Matrix Transformations">,
|
|
L<Imager::Font/transform>
|
|
|
|
metadata, image - L<Imager::ImageTypes/"Tags">
|
|
|
|
mosaic - L<Imager::Filter/mosaic>
|
|
|
|
noise, filter - L<Imager::Filter/noise>
|
|
|
|
noise, rendered - L<Imager::Filter/turbnoise>,
|
|
L<Imager::Filter/radnoise>
|
|
|
|
paste - L<Imager::Transformations/paste>,
|
|
L<Imager::Transformations/rubthrough>
|
|
|
|
pseudo-color image - L<Imager::ImageTypes/to_paletted>,
|
|
L<Imager::ImageTypes/new>
|
|
|
|
posterize - L<Imager::Filter/postlevels>
|
|
|
|
png files - L<Imager::Files>, L<Imager::Files/"PNG">
|
|
|
|
pnm - L<Imager::Files/"PNM (Portable aNy Map)">
|
|
|
|
rectangles, drawing - L<Imager::Draw/box>
|
|
|
|
resizing an image - L<Imager::Transformations/scale>,
|
|
L<Imager::Transformations/crop>
|
|
|
|
RGB (SGI) files - L<Imager::Files/"SGI (RGB, BW)">
|
|
|
|
saving an image - L<Imager::Files>
|
|
|
|
scaling - L<Imager::Transformations/scale>
|
|
|
|
SGI files - L<Imager::Files/"SGI (RGB, BW)">
|
|
|
|
sharpen - L<Imager::Filters/unsharpmask>, L<Imager::Filters/conv>
|
|
|
|
size, image - L<Imager::ImageTypes/getwidth>,
|
|
L<Imager::ImageTypes/getheight>
|
|
|
|
size, text - L<Imager::Font/bounding_box>
|
|
|
|
tags, image metadata - L<Imager::ImageTypes/"Tags">
|
|
|
|
text, drawing - L<Imager::Draw/string>, L<Imager::Draw/align_string>,
|
|
L<Imager::Font::Wrap>
|
|
|
|
text, wrapping text in an area - L<Imager::Font::Wrap>
|
|
|
|
text, measuring - L<Imager::Font/bounding_box>, L<Imager::Font::BBox>
|
|
|
|
tiles, color - L<Imager::Filter/mosaic>
|
|
|
|
unsharp mask - L<Imager::Filter/unsharpmask>
|
|
|
|
watermark - L<Imager::Filter/watermark>
|
|
|
|
writing an image to a file - L<Imager::Files>
|
|
|
|
=head1 SUPPORT
|
|
|
|
The best place to get help with Imager is the mailing list.
|
|
|
|
To subscribe send a message with C<subscribe> in the body to:
|
|
|
|
imager-devel+request@molar.is
|
|
|
|
or use the form at:
|
|
|
|
=over
|
|
|
|
L<http://www.molar.is/en/lists/imager-devel/>
|
|
|
|
=back
|
|
|
|
where you can also find the mailing list archive.
|
|
|
|
You can report bugs by pointing your browser at:
|
|
|
|
=over
|
|
|
|
L<https://rt.cpan.org/NoAuth/ReportBug.html?Queue=Imager>
|
|
|
|
=back
|
|
|
|
or by sending an email to:
|
|
|
|
=over
|
|
|
|
bug-Imager@rt.cpan.org
|
|
|
|
=back
|
|
|
|
Please remember to include the versions of Imager, perl, supporting
|
|
libraries, and any relevant code. If you have specific images that
|
|
cause the problems, please include those too.
|
|
|
|
If you don't want to publish your email address on a mailing list you
|
|
can use CPAN::Forum:
|
|
|
|
http://www.cpanforum.com/dist/Imager
|
|
|
|
You will need to register to post.
|
|
|
|
=head1 CONTRIBUTING TO IMAGER
|
|
|
|
=head2 Feedback
|
|
|
|
I like feedback.
|
|
|
|
If you like or dislike Imager, you can add a public review of Imager
|
|
at CPAN Ratings:
|
|
|
|
http://cpanratings.perl.org/dist/Imager
|
|
|
|
This requires a Bitcard Account (http://www.bitcard.org).
|
|
|
|
You can also send email to the maintainer below.
|
|
|
|
If you send me a bug report via email, it will be copied to RT.
|
|
|
|
=head2 Patches
|
|
|
|
I accept patches, preferably against the main branch in subversion.
|
|
You should include an explanation of the reason for why the patch is
|
|
needed or useful.
|
|
|
|
Your patch should include regression tests where possible, otherwise
|
|
it will be delayed until I get a chance to write them.
|
|
|
|
=head1 AUTHOR
|
|
|
|
Tony Cook <tony@imager.perl.org> is the current maintainer for Imager.
|
|
|
|
Arnar M. Hrafnkelsson is the original author of Imager.
|
|
|
|
Many others have contributed to Imager, please see the README for a
|
|
complete list.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<perl>(1), L<Imager::ImageTypes>(3), L<Imager::Files>(3),
|
|
L<Imager::Draw>(3), L<Imager::Color>(3), L<Imager::Fill>(3),
|
|
L<Imager::Font>(3), L<Imager::Transformations>(3),
|
|
L<Imager::Engines>(3), L<Imager::Filters>(3), L<Imager::Expr>(3),
|
|
L<Imager::Matrix2d>(3), L<Imager::Fountain>(3)
|
|
|
|
L<http://imager.perl.org/>
|
|
|
|
L<Affix::Infix2Postfix>(3), L<Parse::RecDescent>(3)
|
|
|
|
Other perl imaging modules include:
|
|
|
|
L<GD>(3), L<Image::Magick>(3), L<Graphics::Magick>(3).
|
|
|
|
=cut
|