mirror of https://github.com/GNOME/gimp.git
132 lines
2.6 KiB
C
132 lines
2.6 KiB
C
/* 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 */
|
|
|
|
guchar *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->data = g_malloc (width * height * 3);
|
|
|
|
return gximage;
|
|
}
|
|
|
|
static void
|
|
delete_gximage (GXImage *gximage)
|
|
{
|
|
g_free (gximage->data);
|
|
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->data;
|
|
}
|
|
|
|
int
|
|
gximage_get_bpp ()
|
|
{
|
|
return 3;
|
|
}
|
|
|
|
int
|
|
gximage_get_bpl ()
|
|
{
|
|
return 3 * GXIMAGE_WIDTH;
|
|
}
|
|
|
|
int
|
|
gximage_get_byte_order ()
|
|
{
|
|
return GDK_MSB_FIRST;
|
|
}
|
|
|
|
void
|
|
gximage_put (GdkWindow *win, int x, int y, int w, int h, int xdith, int ydith)
|
|
{
|
|
/* 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_rgb_image_dithalign (win,
|
|
gximage->gc,
|
|
x,
|
|
y,
|
|
w,
|
|
h,
|
|
/* todo: make configurable */
|
|
GDK_RGB_DITHER_MAX,
|
|
gximage->data,
|
|
GXIMAGE_WIDTH * 3,
|
|
xdith, ydith);
|
|
}
|