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Added sanity check for width and height being >= 0. Also, do nothing if

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2000-02-03  Federico Mena Quintero  <federico@helixcode.com>

	* gdk-pixbuf/gdk-pixbuf-render.c
	(gdk_pixbuf_render_threshold_alpha): Added sanity check for width
	and height being >= 0.  Also, do nothing if either of them is
	zero.  Thanks to Ettore for pointing this out.
	(gdk_pixbuf_render_to_drawable): Likewise.
	(gdk_pixbuf_render_to_drawable_alpha): Likewise.
This commit is contained in:
Federico Mena Quintero 2000-02-02 10:05:57 +00:00 committed by Arturo Espinosa
parent 51a0dc303d
commit e9f75f6bd8
2 changed files with 22 additions and 0 deletions
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9
gdk-pixbuf/ChangeLog
View File

@ -1,3 +1,12 @@
2000-02-03 Federico Mena Quintero <federico@helixcode.com>
* gdk-pixbuf/gdk-pixbuf-render.c
(gdk_pixbuf_render_threshold_alpha): Added sanity check for width
and height being >= 0. Also, do nothing if either of them is
zero. Thanks to Ettore for pointing this out.
(gdk_pixbuf_render_to_drawable): Likewise.
(gdk_pixbuf_render_to_drawable_alpha): Likewise.
2000-02-02 Federico Mena Quintero <federico@helixcode.com>
* gdk-pixbuf/io-gif.c (gif_get_lzw): Removed debugging g_print.

13
gdk/gdkpixbuf-render.c
View File

@ -68,11 +68,15 @@ gdk_pixbuf_render_threshold_alpha (GdkPixbuf *pixbuf, GdkBitmap *bitmap,
g_return_if_fail (apb->bits_per_sample == 8);
g_return_if_fail (bitmap != NULL);
g_return_if_fail (width >= 0 && height >= 0);
g_return_if_fail (src_x >= 0 && src_x + width <= apb->width);
g_return_if_fail (src_y >= 0 && src_y + height <= apb->height);
g_return_if_fail (alpha_threshold >= 0 && alpha_threshold <= 255);
if (width == 0 || height == 0)
return;
gc = gdk_gc_new (bitmap);
if (!apb->has_alpha) {
@ -134,6 +138,7 @@ remove_alpha (ArtPixBuf *apb, int x, int y, int width, int height, int *rowstrid
g_assert (apb->n_channels == 4);
g_assert (apb->has_alpha);
g_assert (width > 0 && height > 0);
g_assert (x >= 0 && x + width <= apb->width);
g_assert (y >= 0 && y + height <= apb->height);
@ -207,9 +212,13 @@ gdk_pixbuf_render_to_drawable (GdkPixbuf *pixbuf,
g_return_if_fail (drawable != NULL);
g_return_if_fail (gc != NULL);
g_return_if_fail (width >= 0 && height >= 0);
g_return_if_fail (src_x >= 0 && src_x + width <= apb->width);
g_return_if_fail (src_y >= 0 && src_y + height <= apb->height);
if (width == 0 || height == 0)
return;
/* This will have to be modified once libart supports other image types.
* Also, GdkRGB does not have gdk_draw_rgb_32_image_dithalign(), so we
* have to pack the buffer first.
@ -287,9 +296,13 @@ gdk_pixbuf_render_to_drawable_alpha (GdkPixbuf *pixbuf, GdkDrawable *drawable,
g_return_if_fail (apb->bits_per_sample == 8);
g_return_if_fail (drawable != NULL);
g_return_if_fail (width >= 0 && height >= 0);
g_return_if_fail (src_x >= 0 && src_x + width <= apb->width);
g_return_if_fail (src_y >= 0 && src_y + height <= apb->height);
if (width == 0 || height == 0)
return;
gc = gdk_gc_new (drawable);
if (apb->has_alpha) {