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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 "config.h"
-
- #include <gtk/gtk.h>
-
- #include "apptypes.h"
-
- #include "appenv.h"
- #include "colormaps.h"
- #include "gimage.h"
- #include "gximage.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 = g_new (GXImage, 1);
-
- 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 (void)
- {
- gximage = create_gximage (g_visual, GXIMAGE_WIDTH, GXIMAGE_HEIGHT);
- }
-
- void
- gximage_free (void)
- {
- delete_gximage (gximage);
- }
-
- guchar*
- gximage_get_data (void)
- {
- return gximage->data;
- }
-
- int
- gximage_get_bpp (void)
- {
- return 3;
- }
-
- int
- gximage_get_bpl (void)
- {
- return 3 * GXIMAGE_WIDTH;
- }
-
- int
- gximage_get_byte_order (void)
- {
- 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);
- }
-