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New function to threshold a pixbuf's alpha channel into a bitmap.

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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.
This commit is contained in:
Federico Mena Quintero
1999-10-27 23:36:44 +00:00
committed by Arturo Espinosa
parent 3176b6b3ea
commit 0eb096334e
7 changed files with 259 additions and 64 deletions
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4
gdk-pixbuf/io-png.c
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@ -153,7 +153,7 @@ image_load (FILE *f)
png_structp png_ptr;
png_infop info_ptr, end_info;
gboolean failed = FALSE;
gint i, depth, ctype, inttype, passes, bpp;
gint i, ctype, bpp;
png_uint_32 w, h;
png_bytepp rows;
guchar *pixels;
@ -360,7 +360,7 @@ png_info_callback (png_structp png_read_ptr,
if (color_type & PNG_COLOR_MASK_ALPHA)
have_alpha = TRUE;
lc->pixbuf = gdk_pixbuf_new(have_alpha, width, height);
lc->pixbuf = gdk_pixbuf_new(ART_PIX_RGB, have_alpha, 8, width, height);
if (lc->pixbuf == NULL) {
/* Failed to allocate memory */