In XwindowBuffer get the default visual and depth from the XGServer.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@26961 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,11 @@
+2008-10-24 Fred Kiefer <FredKiefer@gmx.de>
+
+	* Source/x11/XGServer.m (-visualForScreen:, -depthForScreen:):
+	New methods that hide RContext details.
+	* Headers/x11/XGServer.h: Declare these new methods.
+	* Source/x11/XWindowBuffer.m: Get the default visual and depth
+	from the XGServer.
+
 2008-10-22 Fred Kiefer <FredKiefer@gmx.de>
 
 	* Source/x11/XGServerWindow.m (-_checkStyle:): Correct code

Headers/x11/XGServer.h

@@ -63,6 +63,9 @@ typedef enum {
 - (Window) xAppRootWindow;
 
 - (void *) xrContextForScreen: (int)screen_number;
+- (Visual *) visualForScreen: (int)screen_number;
+- (int) depthForScreen: (int)screen_number;
+
 - (XGDrawMechanism) drawMechanismForScreen: (int)screen_number;
 - (void) getForScreen: (int)screen_number pixelFormat: (int *)bpp_number 
                 masks: (int *)red_mask : (int *)green_mask : (int *)blue_mask;

Source/x11/XGServer.m

@@ -518,6 +518,16 @@ _parse_display_name(NSString *name, int *dn, int *sn)
   return [[self _screenContextForScreen: screen_number] context];
 }
 
+- (Visual *) visualForScreen: (int)screen_number
+{
+    return [[self _screenContextForScreen: screen_number] context]->visual;
+}
+
+- (int) depthForScreen: (int)screen_number
+{
+    return [[self _screenContextForScreen: screen_number] context]->depth;
+}
+
 /**
    Returns the XGDrawMechanism, which roughly describes the depth of
    the screen and how pixels should be drawn to the screen for maximum

Source/x11/XWindowBuffer.m

@@ -57,7 +57,7 @@ static int test_xshm_error_handler(Display *d, XErrorEvent *ev)
   return 0;
 }
 
-static void test_xshm(Display *display, int drawing_depth)
+static void test_xshm(Display *display, Visual *visual, int drawing_depth)
 {
   NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
 
@@ -93,8 +93,7 @@ static void test_xshm(Display *display, int drawing_depth)
 
     old_error_handler = XSetErrorHandler(test_xshm_error_handler);
 
-    ximage = XShmCreateImage(display,
-	DefaultVisual(display, DefaultScreen(display)),
+    ximage = XShmCreateImage(display, visual,
                              drawing_depth, ZPixmap, NULL, &shminfo,
                              1, 1);
     XSync(display, False);
@@ -166,11 +165,19 @@ no_xshm:
 
 @implementation XWindowBuffer
 
++ (void) initialize
+{
+  NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
+  use_shape_hack = [ud boolForKey: @"XWindowBuffer-shape-hack"];
+}
+
 + windowBufferForWindow: (gswindow_device_t *)awindow
               depthInfo: (struct XWindowBuffer_depth_info_s *)aDI
 {
   int i;
   XWindowBuffer *wi;
+  int drawing_depth;
+  Visual *visual;
 
   for (i = 0; i < num_window_buffers; i++)
     {
@@ -205,6 +212,15 @@ no_xshm:
   wi->window->gdriverProtocol = GDriverHandlesExpose | GDriverHandlesBacking;
   wi->window->gdriver = wi;
 
+#if 0
+  drawing_depth = aDI->drawing_depth;
+  visual = DefaultVisual(wi->display, DefaultScreen(wi->display));
+#else
+  // Better to get the used visual from the XGServer.
+  visual = [(XGServer*)GSCurrentServer() visualForScreen: awindow->screen];
+  drawing_depth = [(XGServer*)GSCurrentServer() depthForScreen: awindow->screen];
+#endif
+
   /* TODO: resolve properly.
      -x11 is creating buffers before I have a chance to tell it not to, so
      I'm freeing them here to reduce memory consumption (and prevent
@@ -225,7 +241,6 @@ no_xshm:
       wi->sx != awindow->xframe.size.width ||
       wi->sy != awindow->xframe.size.height)
     {
-      wi->sx = wi->window->xframe.size.width;
 /*                printf("%@ updating image for %p (%gx%g)\n", wi, wi->window,
                         wi->window->xframe.size.width, wi->window->xframe.size.height);*/
       if (wi->ximage)
@@ -269,16 +284,15 @@ no_xshm:
         goto no_xshm;
 
       if (!did_test_xshm)
-	test_xshm(wi->display, aDI->drawing_depth);
+        test_xshm(wi->display, visual, drawing_depth);
 
       if (!use_xshm)
         goto no_xshm;
 
       /* Use XShm if possible, else fall back to normal XImage: s */
       wi->use_shm = 1;
-      wi->ximage = XShmCreateImage(wi->display,
-	DefaultVisual(wi->display, DefaultScreen(wi->display)),
-	aDI->drawing_depth, ZPixmap, NULL, &wi->shminfo,
+      wi->ximage = XShmCreateImage(wi->display, visual,
+                                   drawing_depth, ZPixmap, NULL, &wi->shminfo,
                                    wi->window->xframe.size.width,
                                    wi->window->xframe.size.height);
       if (!wi->ximage)
@@ -330,7 +344,7 @@ no_xshm:
                                     wi->ximage->data, &wi->shminfo,
                                     wi->window->xframe.size.width,
                                     wi->window->xframe.size.height,
-				    aDI->drawing_depth);
+                                    drawing_depth);
       if (wi->pixmap) /* TODO: this doesn't work */
         {
           XSetWindowBackgroundPixmap(wi->display, wi->window->ident,
@@ -351,9 +365,10 @@ no_xshm:
         {
 no_xshm: 
           wi->use_shm = 0;
-	  wi->ximage = XCreateImage(wi->display, DefaultVisual(wi->display,
-	    DefaultScreen(wi->display)), aDI->drawing_depth, ZPixmap, 0, NULL,
-	    wi->window->xframe.size.width, wi->window->xframe.size.height,
+          wi->ximage = XCreateImage(wi->display, visual, drawing_depth, 
+                                    ZPixmap, 0, NULL,
+                                    wi->window->xframe.size.width, 
+                                    wi->window->xframe.size.height,
                                     8, 0);
 
           wi->ximage->data = malloc(wi->ximage->height * wi->ximage->bytes_per_line);
@@ -688,13 +703,6 @@ static int warn = 0;
 }
 
 
-+ (void) initialize
-{
-  NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
-  use_shape_hack = [ud boolForKey: @"XWindowBuffer-shape-hack"];
-}
-
-
 + (void) _gotShmCompletion: (Drawable)d
 {
   int i;