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authorMatthias Clasen <maclas@gmx.de>2004-01-07 00:26:58 +0000
committerMatthias Clasen <matthiasc@src.gnome.org>2004-01-07 00:26:58 +0000
commit5b26e695a1fc70c99b58f2e9c4c922412fbd1a08 (patch)
tree2f5f563c13bfc6d7427311b48bfbb36dd60e78a9 /gdk-pixbuf/io-pnm.c
parent72b7abd535ba6aeb0c5911b6e6a19ec26f90ecf7 (diff)
downloadgtk+-5b26e695a1fc70c99b58f2e9c4c922412fbd1a08.tar.gz
Make it possible to call gdk_pixbuf_loader_set_size (loader, 0, 0) by
Wed Jan 7 01:17:36 2004 Matthias Clasen <maclas@gmx.de> * gdk-pixbuf-loader.c (gdk_pixbuf_loader_size_func): * gdk-pixbuf-loader.c (gdk_pixbuf_loader_set_size): * gdk-pixbuf-loader.c (gdk_pixbuf_loader_init): Make it possible to call gdk_pixbuf_loader_set_size (loader, 0, 0) by changing the initial values of priv->width/height to -1. * io-tiff.c (tiff_image_parse): * io-ras.c (RAS2State): * io-pnm.c (gdk_pixbuf__pnm_image_load_increment): * io-pcx.c (gdk_pixbuf__pcx_load_increment): * io-jpeg.c (gdk_pixbuf__jpeg_image_load_increment): * io-png.c (png_info_callback): * io-ico.c (DecodeHeader): * io-bmp.c (DecodeHeader): Call size_func once the size is known, even if the module can't make use of the scaling information. If size_func returns 0, don't allocate a pixbuf and return, if necessary with an error. * gdk-pixbuf.h: * gdk-pixbuf-io.c (gdk_pixbuf_get_file_info): A new function to determine the type and size of an image file without loading it completely. (#53725)
Diffstat (limited to 'gdk-pixbuf/io-pnm.c')
-rw-r--r--gdk-pixbuf/io-pnm.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/gdk-pixbuf/io-pnm.c b/gdk-pixbuf/io-pnm.c
index 1fc1fe7c08..437ccaf0e0 100644
--- a/gdk-pixbuf/io-pnm.c
+++ b/gdk-pixbuf/io-pnm.c
@@ -55,6 +55,7 @@ typedef struct {
typedef struct {
GdkPixbufModuleUpdatedFunc updated_func;
GdkPixbufModulePreparedFunc prepared_func;
+ GdkPixbufModuleSizeFunc size_func;
gpointer user_data;
GdkPixbuf *pixbuf;
@@ -820,6 +821,7 @@ gdk_pixbuf__pnm_image_begin_load (GdkPixbufModuleSizeFunc size_func,
return NULL;
}
memset (context, 0, sizeof (PnmLoaderContext));
+ context->size_func = size_func;
context->prepared_func = prepared_func;
context->updated_func = updated_func;
context->user_data = user_data;
@@ -944,6 +946,16 @@ gdk_pixbuf__pnm_image_load_increment (gpointer data,
context->got_header = TRUE;
}
+
+ if (context->size_func) {
+ gint w = context->width;
+ gint h = context->height;
+ (*context->size_func) (&w, &h, context->user_data);
+
+ if (w == 0 || h == 0)
+ return FALSE;
+ }
+
/* scan until we hit image data */
if (!context->did_prescan) {