Rework of context window device setting. Requires corresponding change

in gui.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@25981 72102866-910b-0410-8b05-ffd578937521

Source/art/ARTContext.m

@@ -64,24 +64,13 @@ static int byte_order(void)
   [FTFontInfo initializeBackend];
 }
 
-- (id) initWithContextInfo: (NSDictionary *)info
++ (Class) GStateClass
 {
-  NSString *contextType;
-  contextType = [info objectForKey:
-    NSGraphicsContextRepresentationFormatAttributeName];
-
-  self = [super initWithContextInfo: info];
-  if (contextType)
-    {
-      /* Most likely this is a PS or PDF context, so just return what
-	 super gave us
-	 */
-      return self;
-    }
-
-  /* Create a default gstate */
-  gstate = [[ARTGState allocWithZone: [self zone]] initWithDrawContext: self];
+  return [ARTGState class];
+}
 
+- (void) setupDrawInfo
+{
 #ifdef RDS
   {
     RDSServer *s = (RDSServer *)server;
@@ -110,21 +99,21 @@ static int byte_order(void)
     visualInfo = XGetVisualInfo(d, VisualClassMask, &template, &numMatches);
     if (!visualInfo)
       {
-	template.class = TrueColor;
-	visualInfo = XGetVisualInfo(d, VisualClassMask, &template, &numMatches);
+        template.class = TrueColor;
+        visualInfo = XGetVisualInfo(d, VisualClassMask, &template, &numMatches);
       }
     if (visualInfo)
       {
-	visual = visualInfo->visual;
-	bpp = visualInfo->depth;
-	XFree(visualInfo);
+        visual = visualInfo->visual;
+        bpp = visualInfo->depth;
+        XFree(visualInfo);
       }
     else
       {
-	visual = DefaultVisual(d, DefaultScreen(d));
-	bpp = DefaultDepth(d, DefaultScreen(d));
+        visual = DefaultVisual(d, DefaultScreen(d));
+        bpp = DefaultDepth(d, DefaultScreen(d));
       }
-
+    
     i = XCreateImage(d, visual, bpp, ZPixmap, 0, NULL, 8, 8, 8, 0);
     bpp = i->bits_per_pixel;
     XDestroyImage(i);
@@ -136,11 +125,11 @@ static int byte_order(void)
       int us = byte_order(); /* True iff we're big-endian.  */
       int them = ImageByteOrder(d); /* True iff the server is big-endian.  */
       if (us != them)
-	{
-	  visual->red_mask = flip_bytes(visual->red_mask);
-	  visual->green_mask = flip_bytes(visual->green_mask);
-	  visual->blue_mask = flip_bytes(visual->blue_mask);
-	}
+        {
+          visual->red_mask = flip_bytes(visual->red_mask);
+          visual->green_mask = flip_bytes(visual->green_mask);
+          visual->blue_mask = flip_bytes(visual->blue_mask);
+        }
     }
 
     /* Only returns if the visual was usable.  */
@@ -148,8 +137,6 @@ static int byte_order(void)
 			       visual->blue_mask, bpp);
   }
 #endif
-
-  return self;
 }
 
 - (void) flushGraphics
@@ -183,6 +170,7 @@ static int byte_order(void)
 @implementation ARTContext (ops)
 - (void) GSSetDevice: (void*)device : (int)x : (int)y
 {
+  [self setupDrawInfo];
   [(ARTGState *)gstate GSSetDevice: device : x : y];
 }
 

Source/cairo/CairoContext.m

@@ -58,19 +58,14 @@
   [GSFontInfo setDefaultClass: [CairoFontInfo class]];
 }
 
-- (id) initWithContextInfo: (NSDictionary *)info
++ (Class) GStateClass
 {
-  // Don't allow super to handle PS case.
-  self = [super initWithContextInfo: nil];
-  if (!self)
-    return self;
+  return [CairoGState class];
+}
 
-  // Now save the info
-  ASSIGN(context_info, info);
-
-  gstate = [[CairoGState allocWithZone: [self zone]] initWithDrawContext: self];
-
-  return self;
++ (BOOL) handlesPS
+{
+  return YES;
 }
 
 - (void) flushGraphics

Source/gsc/GSContext.m

@@ -155,6 +155,16 @@ static NSMapTable *gtable;
   NSMapRemove(gtable, (void *)(uintptr_t)index);
 }
 
++ (Class) GStateClass
+{
+  return [GSGState class];
+}
+
++ (BOOL) handlesPS
+{
+  return NO;
+}
+
 - (id) initWithContextInfo: (NSDictionary *)info
 {
   NSString *contextType;
@@ -162,24 +172,39 @@ static NSMapTable *gtable;
 
   contextType = [info objectForKey: 
 		  NSGraphicsContextRepresentationFormatAttributeName];
-  if ([self isMemberOfClass: [GSStreamContext class]] == NO
-      && contextType && [contextType isEqual: NSGraphicsContextPSFormat])
+  if (([isa handlesPS] == NO) && contextType 
+      && [contextType isEqual: NSGraphicsContextPSFormat])
     {
       /* Don't call self, since we aren't initialized */
       [super dealloc];
       return [[GSStreamContext allocWithZone: z] initWithContextInfo: info];
     }
 
-  /* A context is only associated with one server. Do not retain
-     the server, however */
-  server = GSCurrentServer();
+  self = [super initWithContextInfo: info];
+  if (self != nil)
+    {
+      id dest;
 
-  /* Initialize lists and stacks */
-  opstack =  NSZoneMalloc(z, sizeof(GSIArray_t));
-  GSIArrayInitWithZoneAndCapacity((GSIArray)opstack, z, 2);
-  gstack =  NSZoneMalloc(z, sizeof(GSIArray_t));
-  GSIArrayInitWithZoneAndCapacity((GSIArray)gstack, z, 2);
-  [super initWithContextInfo: info];
+      /* Initialize lists and stacks */
+      opstack =  NSZoneMalloc(z, sizeof(GSIArray_t));
+      GSIArrayInitWithZoneAndCapacity((GSIArray)opstack, z, 2);
+      gstack =  NSZoneMalloc(z, sizeof(GSIArray_t));
+      GSIArrayInitWithZoneAndCapacity((GSIArray)gstack, z, 2);
+      /* Create a default gstate */
+      gstate = [[[isa GStateClass] allocWithZone: z] 
+                   initWithDrawContext: self];
+
+      // Special handling for window drawing
+      dest = [info objectForKey: NSGraphicsContextDestinationAttributeName];
+      if ((dest != nil) && [dest isKindOfClass: [NSWindow class]])
+        {
+          /* A context is only associated with one server. Do not retain
+             the server, however */
+          server = GSCurrentServer();
+          [server setWindowdevice: [(NSWindow*)dest windowNumber] 
+                  forContext: self];
+        }
+    }
 
   return self;
 }

Source/gsc/GSStreamContext.m

@@ -72,6 +72,16 @@ fpfloat(FILE *stream, float f)
 
 @implementation GSStreamContext 
 
++ (Class) GStateClass
+{
+  return [GSStreamGState class];
+}
+
++ (BOOL) handlesPS
+{
+  return YES;
+}
+
 - (void) dealloc
 {
   if (gstream)
@@ -81,7 +91,10 @@ fpfloat(FILE *stream, float f)
 
 - initWithContextInfo: (NSDictionary *)info
 {
-  [super initWithContextInfo: info];
+  self = [super initWithContextInfo: info];
+  if (!self)
+    return nil;
+
   if (info && [info objectForKey: @"NSOutputFile"])
     {
       NSString *path = [info objectForKey: @"NSOutputFile"];
@@ -93,22 +106,19 @@ fpfloat(FILE *stream, float f)
 #endif
       if (!gstream)
         {
-	  NSDebugLLog(@"GSContext", @"%@: Could not open printer file %@",
-		      DPSinvalidfileaccess, path);
-	  return nil;
-	}
+          NSDebugLLog(@"GSContext", @"%@: Could not open printer file %@",
+                      DPSinvalidfileaccess, path);
+          return nil;
+        }
     }
   else
     {
       NSDebugLLog(@"GSContext", @"%@: No stream file specified",
-		  DPSconfigurationerror);
+                  DPSconfigurationerror);
+      DESTROY(self);
       return nil;
     }
 
-  /* Create a default gstate */
-  gstate = [[GSStreamGState allocWithZone: [self zone]] 
-	      initWithDrawContext: self];
-
   return self;
 }
 

Source/win32/WIN32Server.m

@@ -1111,15 +1111,13 @@ LRESULT CALLBACK MainWndProc(HWND hwnd, UINT uMsg,
   return NO;
 }
 
-- (void) windowdevice: (int) winNum
+- (void) setWindowdevice: (int)win forContext: (NSGraphicsContext *)ctxt
 {
-  NSGraphicsContext *ctxt;
   RECT rect;
   float h, l, r, t, b;
   NSWindow *window;
 
   NSDebugLLog(@"WTrace", @"windowdevice: %d", winNum);
-  ctxt = GSCurrentContext();
   window = GSWindowWithNumber(winNum);
   GetClientRect((HWND)winNum, &rect);
   h = rect.bottom - rect.top;

Source/winlib/WIN32Context.m

@@ -45,14 +45,9 @@
   [GSFontInfo setDefaultClass: [WIN32FontInfo class]];
 }
 
-- (id) initWithContextInfo: (NSDictionary *)info
++ (Class) GStateClass
 {
-  [super initWithContextInfo: info];
-
-  /* Create a default gstate */
-  gstate = [[WIN32GState allocWithZone: [self zone]] initWithDrawContext: self];
-
-  return self;
+  return [WIN32GState class];
 }
 
 - (void)flushGraphics

Source/x11/XGServerWindow.m

@@ -2541,13 +2541,12 @@ NSLog(@"styleoffsets ... guessing offsets\n");
 
 /**
    Make sure we have the most up-to-date window information and then
-   make sure the current context has our new information
+   make sure the context has our new information
 */
-- (void) windowdevice: (int)win
+- (void) setWindowdevice: (int)win forContext: (NSGraphicsContext *)ctxt
 {
   unsigned width, height;
   gswindow_device_t *window;
-  NSGraphicsContext *ctxt;
   float	t, b, l, r;
 
   NSDebugLLog(@"XGTrace", @"DPSwindowdevice: %d ", win);
@@ -2572,7 +2571,7 @@ NSLog(@"styleoffsets ... guessing offsets\n");
       XFreePixmap(dpy, window->buffer);
       window->buffer = 0;
       if (window->alpha_buffer)
-	XFreePixmap (dpy, window->alpha_buffer);
+        XFreePixmap (dpy, window->alpha_buffer);
       window->alpha_buffer = 0;
     }
 
@@ -2584,7 +2583,6 @@ NSLog(@"styleoffsets ... guessing offsets\n");
       [self _createBuffer: window];
     }
 
-  ctxt = GSCurrentContext();
   [self styleoffsets: &l : &r : &t : &b
 		    : window->win_attrs.window_style : window->ident];
   GSSetDevice(ctxt, window, l, NSHeight(window->xframe) + b);

Source/xlib/XGContext.m

@@ -131,24 +131,9 @@
   [GSFontEnumerator setDefaultClass: fontEnumerator];
 }
 
-- (id) initWithContextInfo: (NSDictionary *)info
++ (Class) GStateClass
 {
-  NSString *contextType;
-  contextType = [info objectForKey: 
-		  NSGraphicsContextRepresentationFormatAttributeName];
-
-  self = [super initWithContextInfo: info];
-  if (contextType)
-    {
-      /* Most likely this is a PS or PDF context, so just return what
-	 super gave us */
-      return self;
-    }
-
-  /* Create a default gstate */
-  gstate = [[XGGState allocWithZone: [self zone]] initWithDrawContext: self];
-
-  return self;
+  return [XGGState class];
 }
 
 - (void) flushGraphics