mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-09-30 11:07:38 +00:00
37ac7d593e
Your eyes are bloodshot. Your mouth starts to foam. Your hands are shaking. You know your need your fix. NEED MORE ABSTRACTION! 2000-04-12 Federico Mena Quintero <federico@helixcode.com> This comes from an excellent idea by Tim Janik (timj@gtk.org) to hook to the last unref operation. * gdk-pixbuf/gdk-pixbuf.c (gdk_pixbuf_set_last_unref_handler): New function to set the last unref handler for a pixbuf. (gdk_pixbuf_finalize): New function to actually finalize a pixbuf. It calls the pixbuf's destroy notification function and frees the GdkPixbuf structure itself. (gdk_pixbuf_unref): Use the last unref function of the pixbuf if available. * gdk-pixbuf/gdk-pixbuf-private.h (struct _GdkPixbuf): New fields for the last unref handler and its user data. * gdk-pixbuf/gdk-pixbuf-data.c (gdk_pixbuf_new_from_data): Use g_new0() to allocate the pixbuf. * gdk-pixbuf/gdk-pixbuf-loader.c (gdk_pixbuf_loader_class_init): Fixed the call to gtk_signal_new() for the "frame_done" signal; it was not specifying the `frame' argument. * gdk-pixbuf/gdk-pixbuf-animation.c (gdk_pixbuf_animation_get_width): Fixed docstring. (gdk_pixbuf_animation_get_height): Likewise. (gdk_pixbuf_animation_get_num_frames): Likewise. (gdk_pixbuf_animation_get_frames): Likewise. * doc/gdk-pixbuf-sections.txt: Updated with the new functions and types. * doc/tmpl/gdk-pixbuf.sgml: Added the description for GdkColorspace. * doc/tmpl/scaling.sgml: Added the description for GdkInterpType. * doc/tmpl/refcounting.sgml: Updated with the information about the last unref handler. * doc/tmpl/*.sgml: Markup tweaks. * gdk-pixbuf/Makefile.am (libgnomecanvaspixbuf_la_LDFLAGS): Sigh, update the libtool version number for libgnomecanvaspixbuf as well. (libpixbufloader_*_la_LDFLAGS): The loaders need to be versioned as well, or the old ones won't work with the new stuff. Also, renamed the modules as follows. * gdk-pixbuf/gdk-pixbuf-io.c (gdk_pixbuf_load_module): Now the modules are called "libpixbufloader-<format>.so" instead of "libpixbuf-<format>.so". They needed renaming so that the new loaders won't overwrite the old ones; even with the versioning stuff, the new .so symlink to the .so.1.0.0 would overwrite the old real .so file.
78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/* GdkPixbuf library - Image creation from in-memory buffers
|
||
*
|
||
* Copyright (C) 1999 The Free Software Foundation
|
||
*
|
||
* Author: Federico Mena-Quintero <federico@gimp.org>
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Library General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Library General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Library General Public
|
||
* License along with this library; if not, write to the
|
||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
* Boston, MA 02111-1307, USA.
|
||
*/
|
||
|
||
#include <config.h>
|
||
#include "gdk-pixbuf.h"
|
||
#include "gdk-pixbuf-private.h"
|
||
|
||
|
||
|
||
/**
|
||
* gdk_pixbuf_new_from_data:
|
||
* @data: Image data in 8-bit/sample packed format.
|
||
* @colorspace: Colorspace for the image data.
|
||
* @has_alpha: Whether the data has an opacity channel.
|
||
* @bits_per_sample: Number of bits per sample.
|
||
* @width: Width of the image in pixels.
|
||
* @height: Height of the image in pixels.
|
||
* @rowstride: Distance in bytes between rows.
|
||
* @destroy_fn: Function used to free the data when the pixbuf's reference count
|
||
* drops to zero, or NULL if the data should not be freed.
|
||
* @destroy_fn_data: Closure data to pass to the destroy notification function.
|
||
*
|
||
* Creates a new #GdkPixbuf out of in-memory image data. Currently only RGB
|
||
* images with 8 bits per sample are supported.
|
||
*
|
||
* Return value: A newly-created #GdkPixbuf structure with a reference count of
|
||
* 1.
|
||
**/
|
||
GdkPixbuf *
|
||
gdk_pixbuf_new_from_data (const guchar *data, GdkColorspace colorspace, gboolean has_alpha,
|
||
int bits_per_sample, int width, int height, int rowstride,
|
||
GdkPixbufDestroyNotify destroy_fn, gpointer destroy_fn_data)
|
||
{
|
||
GdkPixbuf *pixbuf;
|
||
|
||
/* Only 8-bit/sample RGB buffers are supported for now */
|
||
|
||
g_return_val_if_fail (data != NULL, NULL);
|
||
g_return_val_if_fail (colorspace == GDK_COLORSPACE_RGB, NULL);
|
||
g_return_val_if_fail (bits_per_sample == 8, NULL);
|
||
g_return_val_if_fail (width > 0, NULL);
|
||
g_return_val_if_fail (height > 0, NULL);
|
||
|
||
pixbuf = g_new0 (GdkPixbuf, 1);
|
||
pixbuf->ref_count = 1;
|
||
pixbuf->colorspace = colorspace;
|
||
pixbuf->n_channels = has_alpha ? 4 : 3;
|
||
pixbuf->bits_per_sample = bits_per_sample;
|
||
pixbuf->has_alpha = has_alpha ? TRUE : FALSE;
|
||
pixbuf->width = width;
|
||
pixbuf->height = height;
|
||
pixbuf->rowstride = rowstride;
|
||
pixbuf->pixels = (guchar *) data;
|
||
pixbuf->destroy_fn = destroy_fn;
|
||
pixbuf->destroy_fn_data = destroy_fn_data;
|
||
|
||
return pixbuf;
|
||
}
|