* src/image.c (image_create_bitmap_from_data)
(image_create_bitmap_from_file): Specify a Window or a Pixmap
describing the screen, not a back buffer drawable which may not exist.
Otherwise, Emacs crashes on startup when a bitmap icon is in use.
Fix SVG scaling with librsvg>2.52 and SVG file with only one known
dimension.
* src/image.c (svg_load_image): Compute a percentage dimension with
the other known dimension.
* src/image.c (image_clear_image, lookup_image): Fix coding
style.
(x_destroy_x_image): Remove unnecessary assertion. Call
XDestroyImage, since otherwise only the image data is freed.
(image_from_emacs_colors): Rename variables to make more sense.
* src/image.c (svg_load_image): Don't call Lisp to remove trailing
whitespace from librsvg error messages, do it in C instead; this
reduces consing and is much cleaner. Don't display empty error
reason if librsvg happens to return an empty message text.
(syms_of_image): Don't DEFSYM string-trim-right. (Bug#57755)
* src/image.c (svg_load_image): Use g_error_free directly instead
of the helder g_clear_error (since we're only calling it with
non-nil values).
(svg_load_image): Avoid segfault and double reporting errors.
* test/manual/image-tests.el (image-tests-load-image/svg-too-big)
(image-tests-load-image/svg-invalid): Test it (bug#57755).
* src/image.c (svg_load_image): Display the error message from librsvg
when parsing a bad SVG image file.
* test/manual/image-tests.el
(image-tests-load-image/svg-invalid): New test.
* lisp/image.el (image-animate-timeout): Eject cached animated
images that are no longer reachable (bug#56546).
* src/image.c (Fclear_image_cache): Allow specifying a cached
animated image to eject.
(gif_load, webp_load): Adjust what to use as the caching key --
the identity of the list itself is apparently changed by some
callers.
* src/dispextern.h: Declare image_prune_animation_caches for use
in gc.
* src/image.c (Fclear_image_cache): Clear animation cache.
(anim_prune_animation_cache, anim_get_animation_cache): Allow
clearing in addition to pruning.
(imagemagick_prune_animation_cache)
(imagemagick_get_animation_cache): Ditto.
(image_prune_animation_caches): New function (bug#56546).
* src/dispextern.h (struct image): New field
`use_bilinear_filtering'.
* src/haiku_draw_support.cc (BView_DrawBitmap): Accept it.
* src/haiku_support.h: Update prototypes.
* src/haikuterm.c (haiku_draw_image_glyph_string):
* src/image.c (image_set_transform): Set it.
* src/dispextern.h (struct image): New field `transform',
`original_width' and `original_height'.
* src/haiku_draw_support.cc (BView_DrawMask): Rename to
`be_draw_image_mask' and fix coding style.
(rotate_bitmap_270, BBitmap_transform_bitmap, rotate_bitmap_90):
Delete functions.
(be_apply_affine_transform): New function.
(be_apply_inverse_transform): New function.
* src/haiku_support.h: Update prototypes.
* src/haikuterm.c (haiku_translate_transform): New function.
(haiku_draw_image_glyph_string): Use affine transforms to
implement images.
* src/image.c (image_set_transform): Implement using affine
transforms on Haiku too.
* lisp/image.el (image-map): Keybindings for flipping functions.
(image-flip-horizontally): New function that toggles image flipping
property.
(image-flip-vertically): New function that toggles image flipping
property and rotates image 180 degrees.
* src/image.c (syms_of_image): Add property.
(image_set_transform): Modify image rotation code to also horizontally
flip the image when the property is set.
* etc/NEWS: Add description.
* doc/lispref/display.texi (Image Descriptors): Document :flip
(bug#47095).
* src/haikufont.c (haikufont_draw): Use
`haiku_draw_background_rect' instead.
* src/haikuterm.c (haiku_draw_plain_background): Change
arguments to accept rect manually.
(haiku_get_bitmap): Delete function.
(haiku_get_bitmap_rec): New function.
(haiku_draw_stipple_background): Accept rect instead of box
sizes.
(haiku_draw_background_rect): New function.
(haiku_maybe_draw_background): Use that instead.
(haiku_draw_image_glyph_string): Add notice.
(haiku_draw_glyph_string): Set `stippled_p' correctly.
* src/haikuterm.h (struct haiku_bitmap_record): New fields for
keeping track of stipple state.
* src/image.c (image_create_bitmap_from_data)
(image_create_bitmap_from_file, free_bitmap_record): Free and
set them accordingly.
* src/image.c (svg_load_image): Don't include the spec in the
error message, because this is commonly the entire SVG string, and
this will fill up the *Messages* buffer quickly.
* src/image.c (gif_load): Invert the way animated pixmaps are
created: Work on the cached computed-so-far pixmap, and then copy
the entire thing to the ximg with PUT_PIXEL at the end. This
should work across platforms, which the previous version didn't.
* src/image.c (anim_prune_animation_cache): Tweak the destructor
API.
(gif_destroy): New function.
(gif_load): Use a cache to avoid quadratic CPU usage for animated
images (bug#45224).
(webp_destroy): New function.
(webp_load): Use it.
* src/image.c (struct anim_cache, anim_create_cache)
(anim_prune_animation_cache, anim_get_animation_cache): Rename
from webp_cache (etc) to prepare for usage in the gif animation
implementation, too.
(webp_load): Adjust cache usage.
