mirror of https://github.com/GNOME/gimp.git
125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include "appenv.h"
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#include "colormaps.h"
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#include "gimage.h"
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#include "gximage.h"
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#include "errors.h"
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typedef struct _GXImage GXImage;
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struct _GXImage
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{
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long width, height; /* width and height of ximage structure */
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GdkVisual *visual; /* visual appropriate to our depth */
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GdkGC *gc; /* graphics context */
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GdkImage *image; /* private data */
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};
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/* The static gximages for drawing to windows */
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static GXImage *gximage = NULL;
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#define QUANTUM 32
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/* STATIC functions */
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static GXImage *
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create_gximage (GdkVisual *visual, int width, int height)
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{
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GXImage * gximage;
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gximage = (GXImage *) g_malloc (sizeof (GXImage));
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gximage->visual = visual;
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gximage->gc = NULL;
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gximage->image = gdk_image_new (GDK_IMAGE_FASTEST, visual, width, height);
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return gximage;
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}
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static void
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delete_gximage (GXImage *gximage)
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{
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gdk_image_destroy (gximage->image);
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if (gximage->gc)
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gdk_gc_destroy (gximage->gc);
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g_free (gximage);
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}
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/****************************************************************/
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/* Function definitions */
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void
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gximage_init ()
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{
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gximage = create_gximage (g_visual, GXIMAGE_WIDTH, GXIMAGE_HEIGHT);
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}
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void
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gximage_free ()
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{
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delete_gximage (gximage);
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}
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guchar*
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gximage_get_data ()
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{
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return gximage->image->mem;
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}
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int
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gximage_get_bpp ()
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{
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return gximage->image->bpp;
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}
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int
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gximage_get_bpl ()
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{
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return gximage->image->bpl;
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}
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int
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gximage_get_byte_order ()
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{
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return gximage->image->byte_order;
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}
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void
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gximage_put (GdkWindow *win, int x, int y, int w, int h)
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{
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/* create the GC if it doesn't yet exist */
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if (!gximage->gc)
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{
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gximage->gc = gdk_gc_new (win);
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gdk_gc_set_exposures (gximage->gc, TRUE);
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}
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gdk_draw_image (win, gximage->gc, gximage->image, 0, 0, x, y, w, h);
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/* sync the draw image to make sure it has been displayed before continuing */
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gdk_flush ();
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}
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