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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include "appenv.h"
#include "colormaps.h"
#include "gimage.h"
#include "gximage.h"
#include "errors.h"
typedef struct _GXImage GXImage;
struct _GXImage
{
long width, height; /* width and height of ximage structure */
GdkVisual *visual; /* visual appropriate to our depth */
GdkGC *gc; /* graphics context */
GdkImage *image; /* private data */
};
/* The static gximages for drawing to windows */
static GXImage *gximage = NULL;
#define QUANTUM 32
/* STATIC functions */
static GXImage *
create_gximage (GdkVisual *visual, int width, int height)
{
GXImage * gximage;
gximage = (GXImage *) g_malloc (sizeof (GXImage));
gximage->visual = visual;
gximage->gc = NULL;
gximage->image = gdk_image_new (GDK_IMAGE_FASTEST, visual, width, height);
return gximage;
}
static void
delete_gximage (GXImage *gximage)
{
gdk_image_destroy (gximage->image);
if (gximage->gc)
gdk_gc_destroy (gximage->gc);
g_free (gximage);
}
/****************************************************************/
/* Function definitions */
void
gximage_init ()
{
gximage = create_gximage (g_visual, GXIMAGE_WIDTH, GXIMAGE_HEIGHT);
}
void
gximage_free ()
{
delete_gximage (gximage);
}
guchar*
gximage_get_data ()
{
return gximage->image->mem;
}
int
gximage_get_bpp ()
{
return gximage->image->bpp;
}
int
gximage_get_bpl ()
{
return gximage->image->bpl;
}
int
gximage_get_byte_order ()
{
return gximage->image->byte_order;
}
void
gximage_put (GdkWindow *win, int x, int y, int w, int h)
{
/* create the GC if it doesn't yet exist */
if (!gximage->gc)
{
gximage->gc = gdk_gc_new (win);
gdk_gc_set_exposures (gximage->gc, TRUE);
}
gdk_draw_image (win, gximage->gc, gximage->image, 0, 0, x, y, w, h);
/* sync the draw image to make sure it has been displayed before continuing */
gdk_flush ();
}
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