* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * modify it under the terms of the GNU Lesser 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.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser 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.
*/
/*
- * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
-#include <config.h>
-
-/* gcc -ansi -pedantic on GNU/Linux causes warnings and errors
- * unless this is defined:
- * warning: #warning "Files using this header must be compiled with _SVID_SOURCE or _XOPEN_SOURCE"
- */
-#ifndef _XOPEN_SOURCE
-# define _XOPEN_SOURCE 1
-#endif
-
#include <stdlib.h>
#include <sys/types.h>
-#if defined (HAVE_IPC_H) && defined (HAVE_SHM_H) && defined (HAVE_XSHM_H)
-#define USE_SHM
-#endif
-
-#ifdef USE_SHM
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#endif /* USE_SHM */
-
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-
-#ifdef USE_SHM
-#include <X11/extensions/XShm.h>
-#endif /* USE_SHM */
-
-#include "gdk.h"
+#include "gdkimage.h"
#include "gdkprivate.h"
-
-static void gdk_image_put_normal (GdkDrawable *drawable,
- GdkGC *gc,
- GdkImage *image,
- gint xsrc,
- gint ysrc,
- gint xdest,
- gint ydest,
- gint width,
- gint height);
-static void gdk_image_put_shared (GdkDrawable *drawable,
- GdkGC *gc,
- GdkImage *image,
- gint xsrc,
- gint ysrc,
- gint xdest,
- gint ydest,
- gint width,
- gint height);
-
-
-static GList *image_list = NULL;
-
-
-void
-gdk_image_exit (void)
-{
- GdkImage *image;
-
- while (image_list)
- {
- image = image_list->data;
- gdk_image_destroy (image);
- }
-}
-
GdkImage *
-gdk_image_new_bitmap(GdkVisual *visual, gpointer data, gint w, gint h)
-/*
- * Desc: create a new bitmap image
- */
-{
- Visual *xvisual;
- GdkImage *image;
- GdkImagePrivate *private;
- private = g_new(GdkImagePrivate, 1);
- image = (GdkImage *) private;
- private->xdisplay = gdk_display;
- private->image_put = gdk_image_put_normal;
- image->type = GDK_IMAGE_NORMAL;
- image->visual = visual;
- image->width = w;
- image->height = h;
- image->depth = 1;
- xvisual = ((GdkVisualPrivate*) visual)->xvisual;
- private->ximage = XCreateImage(private->xdisplay, xvisual, 1, XYBitmap,
- 0, 0, w ,h, 8, 0);
- private->ximage->data = data;
- private->ximage->bitmap_bit_order = MSBFirst;
- private->ximage->byte_order = MSBFirst;
- image->byte_order = MSBFirst;
- image->mem = private->ximage->data;
- image->bpl = private->ximage->bytes_per_line;
- image->bpp = 1;
- return(image);
-} /* gdk_image_new_bitmap() */
-
-static int
-gdk_image_check_xshm(Display *display)
-/*
- * Desc: query the server for support for the MIT_SHM extension
- * Return: 0 = not available
- * 1 = shared XImage support available
- * 2 = shared Pixmap support available also
- */
-{
-#ifdef USE_SHM
- int major, minor, ignore;
- Bool pixmaps;
-
- if (XQueryExtension(display, "MIT-SHM", &ignore, &ignore, &ignore))
- {
- if (XShmQueryVersion(display, &major, &minor, &pixmaps )==True)
- {
- return (pixmaps==True) ? 2 : 1;
- }
- }
-#endif /* USE_SHM */
- return 0;
-}
-
-void
-gdk_image_init (void)
-{
- if (gdk_use_xshm)
- {
- if (!gdk_image_check_xshm (gdk_display))
- {
- gdk_use_xshm = False;
- }
- }
-}
-
-GdkImage*
-gdk_image_new (GdkImageType type,
- GdkVisual *visual,
- gint width,
- gint height)
-{
- GdkImage *image;
- GdkImagePrivate *private;
-#ifdef USE_SHM
- XShmSegmentInfo *x_shm_info;
-#endif /* USE_SHM */
- Visual *xvisual;
-
- switch (type)
- {
- case GDK_IMAGE_FASTEST:
- image = gdk_image_new (GDK_IMAGE_SHARED, visual, width, height);
-
- if (!image)
- image = gdk_image_new (GDK_IMAGE_NORMAL, visual, width, height);
- break;
-
- default:
- private = g_new (GdkImagePrivate, 1);
- image = (GdkImage*) private;
-
- private->xdisplay = gdk_display;
- private->image_put = NULL;
-
- image->type = type;
- image->visual = visual;
- image->width = width;
- image->height = height;
- image->depth = visual->depth;
-
- xvisual = ((GdkVisualPrivate*) visual)->xvisual;
-
- switch (type)
- {
- case GDK_IMAGE_SHARED:
-#ifdef USE_SHM
- if (gdk_use_xshm)
- {
- private->image_put = gdk_image_put_shared;
-
- private->x_shm_info = g_new (XShmSegmentInfo, 1);
- x_shm_info = private->x_shm_info;
-
- private->ximage = XShmCreateImage (private->xdisplay, xvisual, visual->depth,
- ZPixmap, NULL, x_shm_info, width, height);
- if (private->ximage == NULL)
- {
- g_warning ("XShmCreateImage failed");
-
- g_free (image);
- gdk_use_xshm = False;
- return NULL;
- }
-
- x_shm_info->shmid = shmget (IPC_PRIVATE,
- private->ximage->bytes_per_line * private->ximage->height,
- IPC_CREAT | 0777);
-
- if (x_shm_info->shmid == -1)
- {
- g_warning ("shmget failed!");
-
- XDestroyImage (private->ximage);
- g_free (private->x_shm_info);
- g_free (image);
-
- gdk_use_xshm = False;
- return NULL;
- }
-
- x_shm_info->readOnly = False;
- x_shm_info->shmaddr = shmat (x_shm_info->shmid, 0, 0);
- private->ximage->data = x_shm_info->shmaddr;
-
- if (x_shm_info->shmaddr == (char*) -1)
- {
- g_warning ("shmat failed!");
-
- XDestroyImage (private->ximage);
- shmctl (x_shm_info->shmid, IPC_RMID, 0);
-
- g_free (private->x_shm_info);
- g_free (image);
-
- return NULL;
- }
-
- gdk_error_code = 0;
- gdk_error_warnings = 0;
-
- XShmAttach (private->xdisplay, x_shm_info);
- XSync (private->xdisplay, False);
-
- gdk_error_warnings = 1;
- if (gdk_error_code == -1)
- {
- /* this is the common failure case so omit warning */
- XDestroyImage (private->ximage);
- shmdt (x_shm_info->shmaddr);
- shmctl (x_shm_info->shmid, IPC_RMID, 0);
-
- g_free (private->x_shm_info);
- g_free (image);
-
- gdk_use_xshm = False;
- return NULL;
- }
-
- /* We mark the segment as destroyed so that when
- * the last process detaches, it will be deleted.
- * There is a small possibility of leaking if
- * we die in XShmAttach. In theory, a signal handler
- * could be set up.
- */
- shmctl (x_shm_info->shmid, IPC_RMID, 0);
-
- if (image)
- image_list = g_list_prepend (image_list, image);
- }
- else
- {
- g_free (image);
- return NULL;
- }
- break;
-#else /* USE_SHM */
- g_free (image);
- return NULL;
-#endif /* USE_SHM */
- case GDK_IMAGE_NORMAL:
- private->image_put = gdk_image_put_normal;
-
- private->ximage = XCreateImage (private->xdisplay, xvisual, visual->depth,
- ZPixmap, 0, 0, width, height, 32, 0);
-
- /* Use malloc, not g_malloc here, because X will call free()
- * on this data
- */
- private->ximage->data = malloc (private->ximage->bytes_per_line *
- private->ximage->height);
- break;
-
- case GDK_IMAGE_FASTEST:
- g_assert_not_reached ();
- }
-
- if (image)
- {
- image->byte_order = private->ximage->byte_order;
- image->mem = private->ximage->data;
- image->bpl = private->ximage->bytes_per_line;
-
- switch (private->ximage->bits_per_pixel)
- {
- case 8:
- image->bpp = 1;
- break;
- case 16:
- image->bpp = 2;
- break;
- case 24:
- image->bpp = 3;
- break;
- case 32:
- image->bpp = 4;
- break;
- }
- }
- }
-
- return image;
-}
-
-GdkImage*
-gdk_image_get (GdkWindow *window,
- gint x,
- gint y,
- gint width,
- gint height)
-{
- GdkImage *image;
- GdkImagePrivate *private;
- GdkWindowPrivate *win_private;
-
- g_return_val_if_fail (window != NULL, NULL);
-
- win_private = (GdkWindowPrivate *) window;
- if (win_private->destroyed)
- return NULL;
-
- private = g_new (GdkImagePrivate, 1);
- image = (GdkImage*) private;
-
- private->xdisplay = gdk_display;
- private->image_put = gdk_image_put_normal;
- private->ximage = XGetImage (private->xdisplay,
- win_private->xwindow,
- x, y, width, height,
- AllPlanes, ZPixmap);
-
- image->type = GDK_IMAGE_NORMAL;
- image->visual = gdk_window_get_visual (window);
- image->width = width;
- image->height = height;
- image->depth = private->ximage->depth;
-
- image->mem = private->ximage->data;
- image->bpl = private->ximage->bytes_per_line;
- if (private->ximage->bits_per_pixel <= 8)
- image->bpp = 1;
- else if (private->ximage->bits_per_pixel <= 16)
- image->bpp = 2;
- else if (private->ximage->bits_per_pixel <= 24)
- image->bpp = 3;
- else
- image->bpp = 4;
- image->byte_order = private->ximage->byte_order;
-
- return image;
-}
-
-guint32
-gdk_image_get_pixel (GdkImage *image,
- gint x,
- gint y)
+gdk_image_ref (GdkImage *image)
{
- guint32 pixel;
- GdkImagePrivate *private;
-
- g_return_val_if_fail (image != NULL, 0);
-
- private = (GdkImagePrivate *) image;
-
- pixel = XGetPixel (private->ximage, x, y);
-
- return pixel;
+ return (GdkImage *) g_object_ref (G_OBJECT (image));
}
void
-gdk_image_put_pixel (GdkImage *image,
- gint x,
- gint y,
- guint32 pixel)
+gdk_image_unref (GdkImage *image)
{
- GdkImagePrivate *private;
-
- g_return_if_fail (image != NULL);
-
- private = (GdkImagePrivate *) image;
-
- pixel = XPutPixel (private->ximage, x, y, pixel);
-}
-
-void
-gdk_image_destroy (GdkImage *image)
-{
- GdkImagePrivate *private;
-#ifdef USE_SHM
- XShmSegmentInfo *x_shm_info;
-#endif /* USE_SHM */
-
- g_return_if_fail (image != NULL);
-
- private = (GdkImagePrivate*) image;
- switch (image->type)
- {
- case GDK_IMAGE_NORMAL:
- XDestroyImage (private->ximage);
- break;
-
- case GDK_IMAGE_SHARED:
-#ifdef USE_SHM
- gdk_flush();
-
- XShmDetach (private->xdisplay, private->x_shm_info);
- XDestroyImage (private->ximage);
-
- x_shm_info = private->x_shm_info;
- shmdt (x_shm_info->shmaddr);
-
- g_free (private->x_shm_info);
-
- image_list = g_list_remove (image_list, image);
-#else /* USE_SHM */
- g_error ("trying to destroy shared memory image when gdk was compiled without shared memory support");
-#endif /* USE_SHM */
- break;
-
- case GDK_IMAGE_FASTEST:
- g_assert_not_reached ();
- }
-
- g_free (image);
-}
-
-static void
-gdk_image_put_normal (GdkDrawable *drawable,
- GdkGC *gc,
- GdkImage *image,
- gint xsrc,
- gint ysrc,
- gint xdest,
- gint ydest,
- gint width,
- gint height)
-{
- GdkWindowPrivate *drawable_private;
- GdkImagePrivate *image_private;
- GdkGCPrivate *gc_private;
-
- g_return_if_fail (drawable != NULL);
- g_return_if_fail (image != NULL);
- g_return_if_fail (gc != NULL);
-
- drawable_private = (GdkWindowPrivate*) drawable;
- if (drawable_private->destroyed)
- return;
- image_private = (GdkImagePrivate*) image;
- gc_private = (GdkGCPrivate*) gc;
-
- g_return_if_fail (image->type == GDK_IMAGE_NORMAL);
-
- XPutImage (drawable_private->xdisplay, drawable_private->xwindow,
- gc_private->xgc, image_private->ximage,
- xsrc, ysrc, xdest, ydest, width, height);
-}
-
-static void
-gdk_image_put_shared (GdkDrawable *drawable,
- GdkGC *gc,
- GdkImage *image,
- gint xsrc,
- gint ysrc,
- gint xdest,
- gint ydest,
- gint width,
- gint height)
-{
-#ifdef USE_SHM
- GdkWindowPrivate *drawable_private;
- GdkImagePrivate *image_private;
- GdkGCPrivate *gc_private;
-
- g_return_if_fail (drawable != NULL);
- g_return_if_fail (image != NULL);
- g_return_if_fail (gc != NULL);
-
- drawable_private = (GdkWindowPrivate*) drawable;
- if (drawable_private->destroyed)
- return;
- image_private = (GdkImagePrivate*) image;
- gc_private = (GdkGCPrivate*) gc;
-
- g_return_if_fail (image->type == GDK_IMAGE_SHARED);
+ g_return_if_fail (GDK_IS_IMAGE (image));
- XShmPutImage (drawable_private->xdisplay, drawable_private->xwindow,
- gc_private->xgc, image_private->ximage,
- xsrc, ysrc, xdest, ydest, width, height, False);
-#else /* USE_SHM */
- g_error ("trying to draw shared memory image when gdk was compiled without shared memory support");
-#endif /* USE_SHM */
+ g_object_unref (G_OBJECT (image));
}
projects / ~andy / gtk / blobdiff