* io-png.c (gdk_pixbuf__png_image_load): Restructured to use
gdk_pixbuf_new instead of manually allocating image storage. This
gives us a good rowstride and overflow checks. (#77807)
* io-png.c (png_simple_error_callback): libpng error handlers must
not return to their callers, thus longjmp out. This prevents
annoying stderr output from the default error handler.
* io-png.c (gdk_pixbuf__png_image_stop_load): Don't leak info_ptr.
* io-png.c (gdk_pixbuf__png_image_load): Get rid of unused
end_info. Also call png_read_end to check proper ending of the png
file and catch text chunks after the image data.
* io-png.c (setup_png_transformations): Changed signature to
return success and set a GError parameter, adjusted all callers.
Also work around a possible FPE in libpng and always check that
the new info is sane.
Sat Jan 19 20:49:20 2002 Manish Singh <yosh@gimp.org>
* io-jpeg.c, io-png.c: Made sure all the error cases involving
jpeg or png load/saves clean themselves up properly. Marked some
variables needed for cleanup volatile so they aren't clobbered by
setjmp.
2001-12-13 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* gdk-pixbuf-animation.c, gdk-pixbuf-loader.c, gdk-pixpuf.c,
io-gif-animation.c, io-gif.c, io-tiff.c, test-loaders.c: Remove
assorted G_OBJECT casts where unnecessary.
* gdk-pixbuf-loader.c: Call g_object_ref and g_object_unref
instead of gdk_pixbuf_animation_ref and gdk_pixbuf_animation_unref
resp.
* gdk-pixbuf-csource.c, io-bmp.c, io-gif-animation.c, io-ico.c,
io-jpeg.c, io-png.c, io-pnm.c, io-ras.c, io-tga.c, io-wbmp.c,
io-xbm.c, io-xpm.c, test-gdk-pixbuf.c: Dito for gdk_pixbuf_ref and
gdk_pixbuf_unref.
* Makefile.am, pixops/Makefile.am: Compile everything with
-DG_DISABLE_DEPRECATED -DGDK_PIXBUF_DISABLE_DEPRECATED
* gdk-pixdata.c: Use g_ascii_strup() instead of g_strup().
* io-xpm.c: Use g_ascii_strcasecmp() instead of g_strcasecmp().
* demos/testpixbuf-drawable.c, demos/testpixbuf-save.c,
demos/testpixbuf-scale.c, demos/testpixbuf.c: Call g_object_ref
and g_object_unref instead of gdk_pixbuf_ref and gdk_pixbuf_unref
resp.
2001-10-05 Sven Neumann <sven@gimp.org>
* gdk-pixbuf/gdk-pixbuf-io.c
* gdk-pixbuf/gdk-pixbuf-private.h
* gdk-pixbuf/gdk-pixbuf.c
* gdk-pixbuf/gdk-pixbuf.h
* gdk-pixbuf/io-jpeg.c
* gdk-pixbuf/io-png.c: changed GDK_PIXBUF_ERROR_BAD_OPTION_VALUE to
GDK_PIXBUF_ERROR_BAD_OPTION to we can use it for bad keys too. Added
new public API gdk_pixbuf_get_option() to retrieve key/value pairs
set by an image loader. Added support for saving and reading PNG tEXt
chunks in PNG images.
* demos/testpixbuf-save.c
* demos/testpixbuf-scale.c: simple tests for the new PNG tEXt chunk
feature.
* gdk-pixbuf/tmpl/gdk-pixbuf.sgml: adapt to changes in GDK_PIXBUF_ERROR
enum.
* gdk-pixbuf-csource.c: Add missing <stdlib.h> include.
* io-png.c: (setup_png_transformations): Add ifdef so we compile
without warnings with G_DISABLE_CHECKS on.
* io-pnm.c: (gdk_pixbuf__pnm_image_load_increment): Add a missing
const.
* io-wbmp.c: (getin), (get_mbi): Add a missing const.
* io-xbm.c: (gdk_pixbuf__xbm_image_load_real): Get rid of some
unused locals and add an initial value to quiet the compiler's
unintialized variable warning.
* pixops/pixops.c: Put an ifdef around some dead code.
Fri Jun 1 18:54:47 2001 Jonathan Blandford <jrb@redhat.com>
* gtk/gtktreeview.c: (gtk_tree_view_focus): Initial stab at
getting the focus code to work.
(gtk_tree_view_class_init): Add a bunch of keybindings.
* gtk/gtktreeviewcolumn.c
(gtk_tree_view_column_set_cell_data_func):
s/GtkCellDataFunc/GtkTreeCellDataFunc.
(_gtk_tree_view_column_set_tree_view): Use "notify::model" instead
of "properties_changed" to help justify the death of the latter
signal. (-:
* tests/testtreefocus.c (main): Let some columns be focussable to
test focus better.
2001-05-04 Havoc Pennington <hp@redhat.com>
* configure.in: fix some shell typos
* gtk/gtkcolorsel.c (gtk_color_selection_destroy): warning fix
* gtk/gtkimage.c: handle animations
* gtk/gtkcheckbutton.c (gtk_check_button_size_request): request
border_width * 2, not just border_width
* gtk/gtkscale.c: add "format_value" signal to allow people
to override the way values are drawn.
(gtk_scale_get_value_size): fix width/height mistake,
and compute size from actual displayed text, not
from made-up text.
* gtk/gtktexttag.c (gtk_text_tag_class_init): fix return type in
signal registration
* tests/testtext.c: Add "Remove all tags" menu item for testing
* gtk/gtktextbuffer.c (gtk_text_buffer_remove_all_tags): implement
* demos/gtk-demo/main.c (main): add hack so we can find modules
without installing gtk
* demos/gtk-demo/textview.c (insert_text): demo font scaling
* gtk/gtkcellrenderertext.c: Add "scale" property (font scaling
factor)
(gtk_cell_renderer_text_set_property): remove some bogus
g_object_notify
* gtk/gtktexttag.c: add "scale" property which is a font scaling
factor
* gtk/gtktextlayout.c (add_text_attrs): add font scale attribute
to layout
* gtk/gtktextiter.c (gtk_text_iter_is_start): rename from
gtk_text_iter_is_first
2001-05-04 Havoc Pennington <hp@redhat.com>
* pixops/pixops.c (pixops_process): merge fix from stable: Patch
from hoshem@mel.comcen.com.au to fix nonzero X offsets. Fixes
bug #50371.
* gdk-pixbuf/pixops/pixops.c (pixops_composite_nearest): merge
from stable: Patch from OKADA Mitsuru <m-okada@fjb.co.jp> to fix
confusion of using "src" instead of "p".
(pixops_composite_color_nearest): Use a more accurate (and
correct, to begin with) compositing method. This cures checks
showing through on images with no alpha.
* gdk-pixbuf.c (gdk_pixbuf_fill): fix bug that left some trailing
bytes unfilled.
* gdk-pixbuf-io.h: fix UpdatedNotifyFunc to use signed ints
* gdk-pixbuf-loader.h (struct _GdkPixbufLoaderClass): Change
area_updated signal to use signed ints. Removed animation-related
signals.
* io-gif.c, io-gif-animation.h, io-gif-animation.c: Massive
rewrite action
* gdk-pixbuf-animation.c: Add GdkPixbufAnimationIter to abstract
all the pesky details. Remove old frame-based API. Make
GdkPixbufAnimation an abstract base class, derived by the loaders.
2001-02-19 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkimage-fb.c (gdk_image_new_bitmap):
Copy data and free data with free().
* gdk-pixbuf/gdk-pixbuf.c:
* gdk-pixbuf/io-jpeg.c:
* gdk-pixbuf/io-png.c:
Use g_try_malloc/g_free instead malloc/free.
* gdk-pixbuf/test-gdk-pixbuf.c:
Must... initialize... gobject...
* gdk-pixbuf/pixops/timescale.c:
* gtk/gtkcalendar.c:
Use g_malloc instead of malloc.
2001-01-22 Havoc Pennington <hp@redhat.com>
* Makefile.am: Add built marshaller files to support
GdkPixbufLoader signals
* gdk-pixbuf-io.c (gdk_pixbuf_load_module): have
GDK_PIXBUF_MODULEDIR unconditionally replace the compiled-in
module location, rather than acting as a fallback, because we are
using GDK_PIXBUF_MODULEDIR to use gdk-pixbuf before installing it.
* gdk-pixbuf.h: include gdk-pixbuf-loader.h
* gdk-pixbuf-loader.h, gdk-pixbuf-loader.c: Move back over here
from gtk, and add error to close(), because stop_load may do
parsing of the image.
* pixops/have_mmx.S (_pixops_have_mmx): add newline at end of file
* io-*.c: make individual operations static, and add fill_vtable
functions which are exported. Fix the collection of type warnings
that surfaced, including a number of functions that didn't
properly take a GError and some that weren't
const-correct. Involved adding error handling for a few loaders.
* gdk-pixbuf-io.h: Add error reporting to stop_load function
* gdk-pixbuf-io.c (gdk_pixbuf_load_module): change to just look up
a function that fills in the GdkPixbufModule vtable, instead of
looking up all the image functions individually; this means we
can get type safety within modules for the loader functions.
Also it means you don't have to keep the statically compiled and
GModule versions in sync.
* test-gdk-pixbuf.c (main): remove gdk_pixbuf_init()
* make-inline-pixbuf.c (main): remove call to gdk_pixbuf_init()
* gdk-pixbuf.h: nuke gdk_pixbuf_init()
* gdk-pixbuf-animation.c (gdk_pixbuf_frame_get_type): g_type_init
() here
* gdk-pixbuf.c (gdk_pixbuf_get_type): g_type_init () here
* gdk-pixbuf-animation.c (gdk_pixbuf_animation_get_type):
g_type_init() here
2001-01-22 Havoc Pennington <hp@redhat.com>
* demos/testanimation.c: fix to reflect gdk-pixbuf changes
* demos/testpixbuf.c: fix to reflect gdk-pixbuf changes
* gtk/gdk-pixbuf-loader.c, gtk/gdk-pixbuf-loader.h:
Remove, move back to gdk-pixbuf
* gtk/gtktextiter.c, gtk/gtktextiter.h: add sentence equivalents
to all the word functions
* gtk/gtktextview.c (gtk_text_view_start_cursor_blink): return
before doing anything on NULL layout or if we don't have the focus
* gtk/testtext.c (fill_example_buffer): "justification"
* gtk/gtktexttag.h, gtk/gtktexttag.c: change the tag attribute
to be called "justification" not "justify"
* demos/gtk-demo/textview.c (create_tags): "justification"
* gtk/gtktextlayout.c (set_para_values): Handle char-wise wrapping
2000-11-13 Havoc Pennington <hp@redhat.com>
* gtk/gtktextdisplay.c (gtk_text_render_state_update): fix bug
where GC didn't always get updated properly
* demos/gtk-demo/textview.c (create_tags): Use subattributes
of fonts instead of setting the entire font
* gtk/testtext.c (fill_example_buffer): Use "size" instead of
setting entire font
* gtk/gtkdialog.c (gtk_dialog_add_button): Fix some warnings
* gtk/gtktexttag.h, gtk/gtktexttag.c: Explode font_desc into
a bunch of individually-settable font attributes. You can still
use the "font" and "font_desc" args, they just set all the font
attributes at once.
2000-10-18 Havoc Pennington <hp@redhat.com>
* gtk/gtk-sections.txt: Some updates
* gdk/gdk-sections.txt: remove GdkPixbufAlphaMode
* gdk-pixbuf/gdk-pixbuf-sections.txt: Add new API, remove
GdkPixbufClass/GdkAnimationClass since those are private
* gdk-pixbuf/Makefile.am (IGNORE_HFILES): ignore more headers
2000-10-18 Havoc Pennington <hp@redhat.com>
* gtk/gtktextiter.c (gtk_text_iter_forward_to_newline): Fix a bug
where any number of empty lines would get skipped
* gtk/gtktextiter.h: Remove padding from GtkTextIter; live on the
edge.
* gtk/gtktextiter.c (gtk_text_iter_make_surreal): enhance the
warning about invalid iterators (explain more thoroughly)
(gtk_text_iter_in_region): rename gtk_text_iter_in_range
* gtk/gtktextview.c (FOCUS_EDGE_WIDTH): Make focus rectangle less
big
* demos/*.c: Add error handling
* gtk/gtktextbuffer.c: don't modify const iterators
* gtk/gdk-pixbuf-loader.c: Add full error handling here
* gtk/gtkimage.c (gtk_image_set_from_file): ignore errors
on file load
* gtk/gtkiconfactory.c: Update to reflect addition of error
handling to gdk-pixbuf loaders
2000-10-16 Havoc Pennington <hp@redhat.com>
* gdk-pixbuf-io.c (gdk_pixbuf_get_module)
(gdk_pixbuf_get_named_module) (gdk_pixbuf_load_module):
add error reporting here also
* make-inline-pixbuf.c (main): use GError
* io-xpm.c: include unistd.h
* gdk-pixbuf-util.c: include string.h
* io-*.c: add error reporting
* gdk-pixbuf-animation.c (gdk_pixbuf_animation_new_from_file): add
error reporting
* gdk-pixbuf-io.c (gdk_pixbuf_new_from_file): Add error reporting
* gdk-pixbuf-io.h: Add GError** to load_increment and load
methods
* gdk-pixbuf-io.c (gdk_pixbuf_save) (gdk_pixbuf_savev): return
a G_FILE_ERROR if we fail to write or close the file.
* gdk-pixbuf.h: remove GDK_PIXBUF_ERROR_IO, instead we'll use
G_FILE_ERROR_*. Rename enum to GdkPixbufError, properly following
the GError naming rules. Add GError** to load functions.
Wed Jul 26 12:59:31 2000 Tim Janik <timj@gtk.org>
* *.[hc]: applied patch from Andreas Persenius <ndap@swipnet.se> that
updates the license headers to the GNU Lesser General Public License,
as well as updating the copyright year to 2000.
2000-06-09 Larry Ewing <lewing@helixcode.com>
* gdk-pixbuf/io-png.c (gdk_pixbuf__png_image_load_increment):
setjmp for the png error handler. It seems setting the error
handling functions does not avoid the jump, and so not calling
setjmp was causing the incremental loader to jump into lala land.
(gdk_pixbuf__png_image_begin_load): setjmp for error handling, I'm
not sure this one is actually required but the docs say it must be
set for every call to a png_* function.
Also changed the comment to reflect the fact that setting the
error handlers does _not_ avoid the longjmp.
2000-04-11 Federico Mena Quintero <federico@helixcode.com>
Most of this patch is based on a patch by Havoc Pennington
(hp@redhat.com) to make GdkPixbuf's structures opaque and to
remove the libart dependency.
* gdk-pixbuf/gdk-pixbuf.h: Removed the public structures.
(GdkColorspace): New enum that for now only contains
GDK_COLORSPACE_RGB.
(GdkPixbufDestroyNotify): New type for the pixbuf's pixels destroy
notification function.
(GdkInterpType): New num with interpolation types.
* *.[ch]: Replace the libart stuff with our own stuff.
* pixops/*.[ch]: Likewise.
* gdk-pixbuf/gdk-pixbuf-private.h: New file with the private
declarations of the GdkPixbuf structures.
* gdk-pixbuf/gdk-pixbuf.c (gdk_pixbuf_new_from_art_pixbuf):
Removed function.
(gdk_pixbuf_get_format): Constify.
(gdk_pixbuf_get_n_channels): Constify.
(gdk_pixbuf_get_has_alpha): Constify.
(gdk_pixbuf_get_bits_per_sample): Constify.
(gdk_pixbuf_get_pixels): Constify.
(gdk_pixbuf_get_width): Constify.
(gdk_pixbuf_get_height): Constify.
(gdk_pixbuf_get_rowstride): Constify.
* gdk-pixbuf/gdk-pixbuf.c (gdk_pixbuf_copy): New function to copy
a pixbuf.
* gdk-pixbuf/gdk-pixbuf-data.c (gdk_pixbuf_new_from_data): Added a
bits_per_sample argument; currently only 8 bits per sample are
supported.
* gdk-pixbuf/gdk-pixbuf-animation.c (gdk_pixbuf_frame_get_pixbuf):
New accessor.
(gdk_pixbuf_frame_get_x_offset): New accessor.
(gdk_pixbuf_frame_get_y_offset): New accessor.
(gdk_pixbuf_frame_get_delay_time): New accessor.
(gdk_pixbuf_frame_get_action): New accessor.
* gdk-pixbuf/gdk-pixbuf-render.c
(gdk_pixbuf_render_pixmap_and_mask): Instead of returning a solid
mask rectangle for pixbufs without an alpha channel, set the
*mask_return to NULL.
* gdk-pixbuf/gdk-pixbuf-util.c (gdk_pixbuf_add_alpha): Constify.
* gdk-pixbuf/gdk-pixbuf-scale.c: Fix includes.
* gdk-pixbuf/gdk-pixbuf-scale.c (gdk_pixbuf_scale): Added some
preconditions. Maybe we should also check for the colorspace,
bits per pixel, and such.
(gdk_pixbuf_composite): Likewise.
(gdk_pixbuf_composite_color): Likewise.
(gdk_pixbuf_scale_simple): Likewise, and fail gracefully if we
cannot allocate the new pixbuf.
(gdk_pixbuf_composite_color_simple): Likewise.
* gdk-pixbuf/gnome-canvas-pixbuf.c (gnome_canvas_pixbuf_render):
Use art_rgb_rgba_affine() or art_rgb_affine() since we no longer
have an ArtPixBuf.
* gdk-pixbuf/io-bmp.c: Fix includes.
* gdk-pixbuf/pixops/pixops.c (pixops_scale_nearest): Fixed cast in
an lvalue.
* TODO: Populated.
* configure.in: Removed checks for libart.
* gdk-pixbuf/Makefile.am: Removed references to libart.
(noinst_HEADERS): Added gdk-pixbuf-private.h.
* gdk-pixbuf/Makefile.am (libgdk_pixbuf_la_LDFLAGS): Incremented
the version number of the libtool library to indicate that this
definitely is not compatible with the old usage. I know you love
me. I know you do.
* configure.in: Bumped version number to 0.7.0.
* README: Updated.
* gdk-pixbuf-config.in (--libs): We no longer require libart.
* DEPENDS.libgdk_pixbuf: We no longer depend on libart.
* gdk-pixbuf.spec.in: Updated, but I don't guarantee anything.
2000-01-05 Jonathan Blandford <jrb@redhat.com>
* gdk-pixbuf/gdk-pixbuf-io.h: Change the order of the update func
to make it more compatible with the rest of GTK. Added animation
framework for progressive loading.
* gdk-pixbuf/io-bmp.c (image_begin_load): Modified to handle new
system.
* gdk-pixbuf/io-ico.c (image_begin_load): ditto
* gdk-pixbuf/io-png.c (image_begin_load): ditto
* gdk-pixbuf/io-ras.c (image_begin_load): ditto
* gdk-pixbuf/io-jpeg.c (image_begin_load): ditto
* gdk-pixbuf/io-pnm.c (image_begin_load): ditto
* gdk-pixbuf/io-tiff.c (image_begin_load): ditto
* gdk-pixbuf/io-gif.c (image_begin_load): ditto
1999-12-02 Federico Mena Quintero <federico@redhat.com>
* src/testpixbuf.c: #include <config.h>, and fix includes.
* src/testpixbuf-drawable.c: #include <config.h>, and fix includes.
* src/io-xpm.c: Fix includes.
* src/io-tiff.c: Fix includes.
* src/io-ras.c: Fix includes, and do not include more stuff than needed.
* src/io-pnm.c: Fix inlcudes, and do not include more stuff than needed.
* src/io-png.c: Fix includes.
* src/io-ico.c: Fix includes, and do not include more stuff than needed.
* src/io-gif.c: Fix includes, and do not include more stuff than needed.
* src/io-bmp.c: Fix includes, and do not include more stuff than needed.
* src/gnome-canvas-pixbuf.c: Fix includes.
* src/gdk-pixbuf.c: Fix includes.
* src/gdk-pixbuf-util.c: Fix includes.
* src/gdk-pixbuf-render.c: Fix includes.
* src/gdk-pixbuf-io.h: Fix includes.
* src/gdk-pixbuf-drawable.c: Fix includes.
* src/gdk-pixbuf-drawable.h: Use angle brackets for the gdk-pixbuf
include files.
* src/gdk-pixbuf-data.c: Fix includes.
* src/gdk-pixbuf-loader.c: #include <config.h>
* src/gdk-pixbuf-loader.h: Use angle brackets for the gdk-pixbuf
include files.
* src/Makefile.am: Commented out the gdk-pixbuf-drawable stuff,
since it is not finished.
1999-11-22 Havoc Pennington <hp@pobox.com>
* src/io-png.c (image_load_increment): Call the update_area
callback depending on the number of rows loaded in this increment.
* src/testpixbuf.c (main): slow down the progressive load demo
1999-11-22 Jonathan Blandford <jrb@redhat.com>
* configure.in (GDK_PIXBUF_DIR): make the symlink. Does not work
for srcdir != buildir != . Beats me why; I can't figure it out.
AC_OUTPUT_COMMANDS doesn't seem to let me substitute it correctly.
1999-10-27 Federico Mena Quintero <federico@redhat.com>
* src/gdk-pixbuf-render.c (gdk_pixbuf_render_threshold_alpha): New
function to threshold a pixbuf's alpha channel into a bitmap.
* src/gdk-pixbuf.c (gdk_pixbuf_new): Fixed so that it will
contemplate future extensions to ArtPixBuf's formats.
* src/io-png.c (png_info_callback): Use the new API of gdk_pixbuf_new().
* src/gdk-pixbuf.h (gdk_pixbuf_get_height): Added some convenience
macros to fetch the ArtPixBuf's fields.
1999-10-27 Havoc Pennington <hp@pobox.com>
* src/testpixbuf.c (main): Display the progressive load
* src/io-png.c (setup_png_transformations): Break transformation
code into separate function
(png_info_callback): Use setup_png_transformations
1999-10-27 Havoc Pennington <hp@pobox.com>
* src/gdk-pixbuf-io.c (gdk_pixbuf_new_from_xpm_data): Check
properly whether the XPM module has already been loaded
(gdk_pixbuf_new_from_file): Check properly if loader module
was already loaded (was checking if load symbol was present
in order to decide whether to re-load; should check module !=
NULL, then load != NULL)
(image_handler_load): Check in present working directory,
makes it easier to debug for now
(file_formats): This array initializer was seriously on crack,
was assigning a function pointer to a GModule*
* src/testpixbuf.c (main): Change type of pixbuf_loader to GdkPixbufLoader*
* src/io-png.c: Progressive loading stuff compiles, untested.
1999-10-22 Federico Mena Quintero <federico@redhat.com>
* src/io-png.c (image_load): Patch from Kristian Hogsberg
Kristensen <hogsberg@daimi.au.dk> to avoid allocating extra row
buffers; the rows can be read in directly into the main pixel
buffer.
1999-10-20 Federico Mena Quintero <federico@redhat.com>
* src/gdk-pixbuf.h (GdkPixbuf): Removed the unref_fn field. Now
all memory management of the buffer is done by libart.
* src/gdk-pixbuf.c (gdk_pixbuf_unref): Do destruction here.
Removed gdk_pixbuf_destroy, gdk_pixbuf_duplicate.
* src/gdk-pixbuf-data.c (gdk_pixbuf_new_from_data): Implemented in
terms of the libart functions. Removed the old code.
* src/gdk-pixbuf-io.c (image_handler_load): Removed the save
symbols. Saving will not be implemented in GdkPixbuf.
* src/io-gif.c: Removed the saving stub.
(image_load): Fixed memory management to fail gracefully if we run
out of memory while loading the image. Close the gif file when we
are done. This still needs more error handling for the DGif
functions.
* src/io-jpeg.c (image_load): Some robustness fixes.
* src/io-png.c: Removed the saving stuff.
(image_load): Some memory management fixes.
* src/io-tiff.c (image_load): Ditto.
* src/io-xpm.c (pixbuf_create_from_xpm): Ditto.
1999-08-09 Federico Mena Quintero <federico@nuclecu.unam.mx>
* src/io-png.c (image_save): Fixed compiler warnings. Fixed write
to unallocated memory (row_ptr), and fixed its type as well. Take
into account the ArtPixbuf's rowstride when assigning the row
pointers.
* src/gdk-pixbuf.c: Fixup includes.
* src/gdk-pixbuf-io.c: Likewise.
1999-07-18 Larry Ewing <lewing@gimp.org>
* src/io-xpm.c:
* src/io-gif.c:
* src/io-png.c:
* src/io-jpeg.c: Fix a few memory leaks in the, most of them in
error cases but one or two in the common case. There are probably
a few small ones left.
io-gif.c, io-png.c: Actually put the licencing terms in the code now...
io-xpm.c: XPM parser baed off of gdk's, but this does something with the
transparent colors.
