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handle the actual update. add a update_func callback. add a update_func

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1999-11-04  Jonathan Blandford  <jrb@redhat.com>

	* src/gdk-pixbuf-loader.c (gdk_pixbuf_loader_update): handle the
	actual update.
	* src/io-png.c (image_begin_load): add a update_func callback.
	* src/io-gif.c (image_begin_load): add a update_func callback.
	* src/io-tiff.c (image_begin_load): add a update_func callback.
This commit is contained in:
Jonathan Blandford 1999-11-04 18:18:07 +00:00 committed by Jonathan Blandford
parent 567305020d
commit d0ed72ee14
9 changed files with 70 additions and 19 deletions
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8
gdk-pixbuf/ChangeLog
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@ -1,3 +1,11 @@
1999-11-04 Jonathan Blandford <jrb@redhat.com>
* src/gdk-pixbuf-loader.c (gdk_pixbuf_loader_update): handle the
actual update.
* src/io-png.c (image_begin_load): add a update_func callback.
* src/io-gif.c (image_begin_load): add a update_func callback.
* src/io-tiff.c (image_begin_load): add a update_func callback.
1999-11-04 Federico Mena Quintero <federico@redhat.com>
* doc/tmpl/gdk-pixbuf.sgml: Populated.

3
gdk-pixbuf/gdk-pixbuf-io.h
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@ -39,6 +39,7 @@ extern "C" {
typedef void (* ModulePreparedNotifyFunc) (GdkPixbuf *pixbuf, gpointer user_data);
typedef void (* ModuleUpdatedNotifyFunc) (GdkPixbuf *pixbuf, gpointer user_data, guint x, guint y, guint width, guint height);
typedef struct _GdkPixbufModule GdkPixbufModule;
struct _GdkPixbufModule {
@ -49,7 +50,7 @@ struct _GdkPixbufModule {
GdkPixbuf *(* load_xpm_data) (const gchar **data);
/* Incremental loading */
gpointer (* begin_load) (ModulePreparedNotifyFunc func, gpointer user_data);
gpointer (* begin_load) (ModulePreparedNotifyFunc prepare_func, ModuleUpdatedNotifyFunc update_func, gpointer user_data);
void (* stop_load) (gpointer context);
gboolean (* load_increment)(gpointer context, const gchar *buf, guint size);
};

17
gdk-pixbuf/gdk-pixbuf-loader.c
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@ -219,6 +219,21 @@ gdk_pixbuf_loader_prepare (GdkPixbuf *pixbuf, gpointer loader)
gtk_signal_emit (GTK_OBJECT (loader), pixbuf_loader_signals[AREA_PREPARED]);
}
static void
gdk_pixbuf_loader_update (GdkPixbuf *pixbuf, gpointer loader, guint x, guint y, guint width, guint height)
{
GdkPixbufLoaderPrivate *priv = NULL;
priv = GDK_PIXBUF_LOADER (loader)->private;
gtk_signal_emit (GTK_OBJECT (loader),
pixbuf_loader_signals[AREA_UPDATED],
x, y,
/* sanity check in here. Defend against an errant loader */
MIN (width, gdk_pixbuf_get_width (priv->pixbuf)),
MIN (height, gdk_pixbuf_get_height (priv->pixbuf)));
}
/**
@ -259,7 +274,7 @@ gdk_pixbuf_loader_load_module(GdkPixbufLoader *loader)
return 0;
}
priv->context = (*priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, loader);
priv->context = (*priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, gdk_pixbuf_loader_update, loader);
if (priv->context == NULL) {
g_warning("Failed to begin progressive load");

2
gdk-pixbuf/gdk-pixbuf-loader.h
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@ -59,7 +59,7 @@ struct _GdkPixbufLoaderClass {
void (* area_prepared) (GdkPixbufLoader *loader);
void (* area_updated) (GdkPixbufLoader *loader,
int x, int y, int width, int height);
guint x, guint y, guint width, guint height);
void (* closed) (GdkPixbufLoader *loader);
};

18
gdk-pixbuf/io-gif.c
View File

@ -121,7 +121,8 @@ struct _GifContext
FILE *file;
/* progressive read, only. */
ModulePreparedNotifyFunc func;
ModulePreparedNotifyFunc prepare_func;
ModuleUpdatedNotifyFunc update_func;
gpointer user_data;
guchar *buf;
guint ptr;
@ -650,8 +651,8 @@ gif_get_lzw (GifContext *context)
context->width,
context->height);
if (context->func)
(* context->func) (context->pixbuf, context->user_data);
if (context->prepare_func)
(* context->prepare_func) (context->pixbuf, context->user_data);
}
dest = gdk_pixbuf_get_pixels (context->pixbuf);
@ -675,7 +676,7 @@ gif_get_lzw (GifContext *context)
*(temp+2) = context->color_map [2][(guchar) v];
}
if (context->func && context->frame_interlace)
if (context->prepare_func && context->frame_interlace)
gif_fill_in_lines (context, dest, v);
context->draw_xpos++;
@ -957,7 +958,8 @@ image_load (FILE *file)
context->file = file;
context->pixbuf = NULL;
context->state = GIF_START;
context->func = NULL;
context->prepare_func = NULL;
context->update_func = NULL;
gif_main_loop (context);
@ -965,7 +967,9 @@ image_load (FILE *file)
}
gpointer
image_begin_load (ModulePreparedNotifyFunc func, gpointer user_data)
image_begin_load (ModulePreparedNotifyFunc prepare_func,
ModuleUpdatedNotifyFunc update_func,
gpointer user_data)
{
GifContext *context;
@ -973,7 +977,7 @@ image_begin_load (ModulePreparedNotifyFunc func, gpointer user_data)
count = 0;
#endif
context = g_new (GifContext, 1);
context->func = func;
context->prepare_func = prepare_func;
context->user_data = user_data;
context->file = NULL;
context->pixbuf = NULL;

6
gdk-pixbuf/io-png.c
View File

@ -257,7 +257,9 @@ struct _LoadContext {
};
gpointer
image_begin_load (ModulePreparedNotifyFunc func, gpointer user_data)
image_begin_load (ModulePreparedNotifyFunc prepare_func,
ModuleUpdatedNotifyFunc update_func,
gpointer user_data)
{
LoadContext* lc;
@ -265,7 +267,7 @@ image_begin_load (ModulePreparedNotifyFunc func, gpointer user_data)
lc->fatal_error_occurred = FALSE;
lc->notify_func = func;
lc->notify_func = prepare_func;
lc->notify_user_data = user_data;
/* Create the main PNG context struct */

16
gdk-pixbuf/io-tiff.c
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@ -37,7 +37,8 @@
typedef struct _TiffData TiffData;
struct _TiffData
{
ModulePreparedNotifyFunc func;
ModulePreparedNotifyFunc prepare_func;
ModuleUpdatedNotifyFunc update_func;
gpointer user_data;
gchar *tempname;
@ -69,7 +70,7 @@ image_load_real (FILE *f, TiffData *context)
pixbuf = gdk_pixbuf_new (ART_PIX_RGB, TRUE, 8, w, h);
if (context)
(* context->func) (pixbuf, context->user_data);
(* context->prepare_func) (pixbuf, context->user_data);
/* Yes, it needs to be _TIFFMalloc... */
rast = (uint32 *) _TIFFmalloc (num_pixs * sizeof (uint32));
@ -108,8 +109,10 @@ image_load_real (FILE *f, TiffData *context)
_TIFFfree (rast);
TIFFClose (tiff);
if (context)
if (context) {
gdk_pixbuf_unref (pixbuf);
(* context->update_func) (pixbuf, context->user_data, 0, 0, w, h);
}
return pixbuf;
}
@ -132,14 +135,17 @@ image_load (FILE *f)
* the file when it's done. It's not pretty.
*/
gpointer
image_begin_load (ModulePreparedNotifyFunc func, gpointer user_data)
image_begin_load (ModulePreparedNotifyFunc prepare_func,
ModuleUpdatedNotifyFunc update_func,
gpointer user_data)
{
TiffData *context;
gint fd;
context = g_new (TiffData, 1);
context->func = func;
context->prepare_func = prepare_func;
context->user_data = user_data;
context->all_okay = TRUE;
context->tempname = g_strdup ("/tmp/gdkpixbuf-tif-tmp.XXXXXX");

17
gtk/gdk-pixbuf-loader.c
View File

@ -219,6 +219,21 @@ gdk_pixbuf_loader_prepare (GdkPixbuf *pixbuf, gpointer loader)
gtk_signal_emit (GTK_OBJECT (loader), pixbuf_loader_signals[AREA_PREPARED]);
}
static void
gdk_pixbuf_loader_update (GdkPixbuf *pixbuf, gpointer loader, guint x, guint y, guint width, guint height)
{
GdkPixbufLoaderPrivate *priv = NULL;
priv = GDK_PIXBUF_LOADER (loader)->private;
gtk_signal_emit (GTK_OBJECT (loader),
pixbuf_loader_signals[AREA_UPDATED],
x, y,
/* sanity check in here. Defend against an errant loader */
MIN (width, gdk_pixbuf_get_width (priv->pixbuf)),
MIN (height, gdk_pixbuf_get_height (priv->pixbuf)));
}
/**
@ -259,7 +274,7 @@ gdk_pixbuf_loader_load_module(GdkPixbufLoader *loader)
return 0;
}
priv->context = (*priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, loader);
priv->context = (*priv->image_module->begin_load) (gdk_pixbuf_loader_prepare, gdk_pixbuf_loader_update, loader);
if (priv->context == NULL) {
g_warning("Failed to begin progressive load");

2
gtk/gdk-pixbuf-loader.h
View File

@ -59,7 +59,7 @@ struct _GdkPixbufLoaderClass {
void (* area_prepared) (GdkPixbufLoader *loader);
void (* area_updated) (GdkPixbufLoader *loader,
int x, int y, int width, int height);
guint x, guint y, guint width, guint height);
void (* closed) (GdkPixbufLoader *loader);
};