Imager-0.40

Changes for version 0.40

difference() wasn't setting an alpha channel when the input image didn't have one
improve crop() documentation, see http://perlmonks.org/index.pl?lastnode_id=155767&node_id=155428
handle the first "buggy giflib" test more portably. Previously it used fork() which caused problems on systems that didn't have a real fork().
For latest versions check the Imager-devel pages: http://www.eecs.umich.edu/~addi/perl/Imager/devel/

Changes for version 0.40

anti-aliased polygon fill
add general fill to polygon fill
make color values smarter for the drawing functions
implemented reading and writing the TIFF text tags
added prototypes for some of the derivative tags functions
read paletted tiff images into Imager paletted images
on partial tiff image reads, set the i_incomplete tag
tiff reading now uses the error stack
use the error stack value from reading bmp files
fix an error message in bmp.c
added has_chars() method to Imager::Font::FreeType2
freetype 2 bounding box function didn't know UTF8 (doh!)
write paletted images as paletted to tiff
initialize counter for packing 4 bit data
don't allocate hashboxes as locals since it overflows the stack by default in Darwin
applied T1 afm patch from Claes Jacobsson
split IM_INCPATH and IM_LIBPATH with $Config{path_sep}, so they work on Windows
Added memory pools for easy cleanup of temp buffers
Added read support for sgi .rgb files.
io_new_fd() now creates a FDSEEK io object
implemented i_readgif_wiol()
Imager->read() now uses i_readgif_wiol();
extend callback iolayers at C and Perl levels
implemented i_writegif_wiol()
split out Perl iolayer initialization into private methods
add tests for each type of iolayer in t50basicoo.t
read/write multi-image tiff files
tests in t50basicoo.t for multi-image/file
ASCII PBM files were reading white as dark gray (255 vs 1)
modify the Freetype2 font code to pick it's own encoding rather than using whatever strange translation FT2 happens to pick
modify the FT1 font code to use the first encoding as a default if we don't find a unicode encoding
use the glyph bbox to calculate the glyph bitmaps for rendering with FT1 rather than the global ascender/descender. This helps with fonts that have broken metrics.
fix calculation of descender for FT2, it was calculating the minimum decent rather than the maximum for the characters in the string
didn't set default for bounding_box() utf8 parameter (caused a warning when calling bounding_box() on a FT2 font with no utf8 parameter)
Added lib/Imager/Draw.pod documentation of primitives.
Added lib/Imager/Transformations.pod, some docs of simple transforms.
Added lib/Imager/ImageTypes.pod, draft of ImageType pod.
Added lib/Imager/Filters.pod, draft of Filters pod.
Added lib/Imager/Engines.pod, draft of Engines pod.
added getpixel() and setpixel() methods
added Artur's OSX dlload() emulation, with minor changes
modified _color() to work around a 5.6.0 bug
replaced old gif options with tags
we now log which memory block is being freed before giving an error on it being re-freed
fixed stupid bug in deleting tags
fixed minor pod errors involving >
0.40pre2
- make t1log optional, defaulting to off. You can enable the log with Imager::init(t1log=>1) (Ticket #369)
- quote a few hash key strings to prevent warnings on 5.004
- modify quantization code to handle 1 channel images correctly (Ticket #365)
- make channel pointer to i_gsamp() const int * so we can pass const arrays
- handle the presence of the default broken giflib better, by giving them some more prose about the problem, and skipping all but the first test that fails with the broken giflib
- i_box_cfill() went into an infinite loop on fountain fills or fills on images with more than 8-bits/sample
- hide more of our Darwin dlload emulation to prevent runtime symbol conflicts
- use INT2PTR() and PTR2IV() macros instead of direct casts to prevent pointer vs int size warnings on 64-bit builds of perl.
- add our own INT2PTR and PTR2IV definitions when perl doesn't supply them
- difference() method
- hide (with static) or rename many symbols that could possibly cause conflicts with other libraries or perl
- Fix runaway cache problem for freetype1 font cache.
- Added version logging when log is started.