GUI part of the graphics context rewrite.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@24966 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,17 @@
+2007-04-04 Fred Kiefer <FredKiefer@gmx.de>
+
+	* Headers/AppKit/NSWindow.h: Reuse one reserved ivar as the
+	graphics context.
+	* Source/NSWindow.m (-_terminateBackendWindow,
+	-_initBackendWindow, -initWithWindowRef:, -graphicsContext,
+	-flushWindow, -_processResizeEvent): Set and use context from ivar.
+	* Source/NSImage.m (-drawInRect:fromRect:operation:fraction:):
+	make sure to use the right graphic context.
+	* Source/NSView.m (-releaseGState): Use context from window.
+	* Source/NSView.m (-_lockFocusInContext:inRect:,
+	-unlockFocusNeedsFlush:) Set context to current when locking focus
+	and pop it when unlocking.
+
 2007-04-02  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Headers/AppKit/NSAlert.h: Tidied.

Headers/AppKit/NSWindow.h

@@ -215,9 +215,9 @@ APPKIT_EXPORT NSSize NSTokenSize;
   } _f;
  
   id _defaultButtonCell;
-  void          *_reserved_1;
-  void          *_reserved_2;
+  NSGraphicsContext *_context;
 
+  void          *_reserved_1;
 }
 
 /*

Source/NSImage.m

@@ -1051,6 +1051,7 @@ repd_for_rep(NSArray *_reps, NSImageRep *rep)
     NSPoint p;
     double x0, y0, x1, y1, w, h;
     int gState;
+    NSGraphicsContext *ctxt1;
 
     s = [self size];
 
@@ -1098,8 +1099,9 @@ repd_for_rep(NSArray *_reps, NSImageRep *rep)
 		       alpha: YES];
 
     [[[cache window] contentView] lockFocus];
-
-    DPScompositerect(ctxt, 0, 0, w, h, NSCompositeClear);
+    // The context of the cache window
+    ctxt1 = GSCurrentContext();
+    DPScompositerect(ctxt1, 0, 0, w, h, NSCompositeClear);
 
     /* Set up the effective transform.  We also save a gState with this
        transform to make it easier to do the final composite.  */
@@ -1107,9 +1109,8 @@ repd_for_rep(NSArray *_reps, NSImageRep *rep)
     ts.tX = p.x;
     ts.tY = p.y;
     [transform setTransformStruct: ts];
-    [ctxt GSSetCTM: transform];
-
-    gState = [ctxt GSDefineGState];
+    [ctxt1 GSSetCTM: transform];
+    gState = [ctxt1 GSDefineGState];
 
     [self drawRepresentation: [self bestRepresentationForDevice: nil]
 		      inRect: NSMakeRect(0, 0, s.width, s.height)];
@@ -1118,8 +1119,8 @@ repd_for_rep(NSArray *_reps, NSImageRep *rep)
        the alpha of the pixels.  */
     if (delta != 1.0)
       {
-	DPSsetalpha(ctxt, delta);
-	DPScompositerect(ctxt, 0, 0, s.width, s.height,
+        DPSsetalpha(ctxt1, delta);
+        DPScompositerect(ctxt1, 0, 0, s.width, s.height,
                          NSCompositeDestinationIn);
       }
 

Source/NSView.m

@@ -1709,8 +1709,10 @@ static NSRect convert_rect_using_matrices(NSRect aRect, NSAffineTransform *matri
           ctxt = [_window graphicsContext];
         }
     }
-  // FIXME: Set current context
 
+  // Set current context
+  [NSGraphicsContext saveGraphicsState];
+  [NSGraphicsContext setCurrentContext: ctxt];
 
   [ctxt lockFocusView: self inRect: rect];
   wrect = [self convertRect: rect toView: nil];
@@ -1763,6 +1765,7 @@ static NSRect convert_rect_using_matrices(NSRect aRect, NSAffineTransform *matri
         }
       else
         {
+          // This only works, when the context comes from the window
           DPSsetgstate(ctxt, window_gstate);
           DPSgsave(ctxt);
           [matrix concat];
@@ -1808,7 +1811,7 @@ static NSRect convert_rect_using_matrices(NSRect aRect, NSAffineTransform *matri
         }
     }
 
-  /* Tell backends that images are drawn upside down. 
+  /* Tell backends that images are drawn upside down. Obsolete?
      This is needed when a backend is able to handle full image transformation. */
   GSWSetViewIsFlipped(ctxt, _rFlags.flipped_view);
 }
@@ -1851,6 +1854,7 @@ static NSRect convert_rect_using_matrices(NSRect aRect, NSAffineTransform *matri
       [window_t->_rectsBeingDrawn removeLastObject];
     }
   [ctxt unlockFocusView: self needsFlush: YES ];
+  [NSGraphicsContext restoreGraphicsState];
 }
 
 /**
@@ -1878,7 +1882,7 @@ static NSRect convert_rect_using_matrices(NSRect aRect, NSAffineTransform *matri
 - (void) releaseGState
 {
   if (_allocate_gstate && _gstate)
-    GSUndefineGState(GSCurrentContext(), _gstate);
+    GSUndefineGState([_window graphicsContext], _gstate);
   _gstate = 0;
   _allocate_gstate = NO;
 }

Source/NSWindow.m

@@ -664,17 +664,16 @@ many times.
 */
 - (void) _terminateBackendWindow
 {
-  NSGraphicsContext *context = GSCurrentContext();
-
   /* Check for context also as it might have disappeared before us */
-  if (context && _gstate)
+  if (_context && _gstate)
     {
-      GSUndefineGState(context, _gstate);
+      GSUndefineGState(_context, _gstate);
       _gstate = 0;
     }
   
   if (_windowNum)
     {
+      DESTROY(_context);
       [_wv setWindowNumber: 0];
       [GSServerForWindow(self) termwindow: _windowNum];
       NSMapRemove(windowmaps, (void*)(intptr_t)_windowNum);
@@ -749,7 +748,6 @@ many times.
 {
   int screenNumber;
   NSCountedSet *dragTypes;
-  NSGraphicsContext *context = GSCurrentContext();
   GSDisplayServer *srv = GSCurrentServer();
 
   /* If we were deferred or one shot, our drag types may not have
@@ -776,11 +774,15 @@ many times.
   [srv setwindowlevel: [self level] : _windowNum];
   NSMapInsert (windowmaps, (void*)(intptr_t)_windowNum, self);
 
-  // Set window in new _gstate
-  DPSgsave(context);
+  ASSIGN(_context, [NSGraphicsContext graphicsContextWithWindow: self]);
+  // FIXME: This belongs into NSGraphicsContext
+  [NSGraphicsContext saveGraphicsState];
+  [NSGraphicsContext setCurrentContext: _context];
   [srv windowdevice: _windowNum];
-  _gstate = GSDefineGState(context);
-  DPSgrestore(context);
+  [NSGraphicsContext restoreGraphicsState];
+
+  // Set window in new _gstate
+  _gstate = GSDefineGState(_context);
 
   {
     NSRect frame = _frame;
@@ -974,7 +976,6 @@ many times.
   NSScreen* aScreen;
   int screen;
   int winNum;
-  NSGraphicsContext *context = GSCurrentContext();
   GSDisplayServer *srv = GSCurrentServer();
 
   // Get the properties for the underlying window
@@ -994,11 +995,15 @@ many times.
   _windowNum = winNum;
   NSMapInsert (windowmaps, (void*)(intptr_t)_windowNum, self);
 
-   // Set window in new _gstate
-  DPSgsave(context);
+  ASSIGN(_context, [NSGraphicsContext graphicsContextWithWindow: self]);
+  // FIXME: This belongs into NSGraphicsContext
+  [NSGraphicsContext saveGraphicsState];
+  [NSGraphicsContext setCurrentContext: _context];
   [srv windowdevice: _windowNum];
-  _gstate = GSDefineGState(context);
-  DPSgrestore(context);
+  [NSGraphicsContext restoreGraphicsState];
+
+  // Set window in new _gstate
+  _gstate = GSDefineGState(_context);
 
   {
     NSRect frame = _frame;
@@ -1173,8 +1178,7 @@ many times.
 
 - (NSGraphicsContext*) graphicsContext
 {
-  // FIXME
-  return GSCurrentContext();
+  return _context;
 }
 
 - (int) gState
@@ -2118,9 +2122,7 @@ many times.
    */
   if (_backingType == NSBackingStoreNonretained)
     {
-      NSGraphicsContext	*context = GSCurrentContext();
-
-      [context flushGraphics];
+      [_context flushGraphics];
       return;
     }
 
@@ -3167,12 +3169,13 @@ resetCursorRectsForView(NSView *theView)
 {
   if (_windowNum && _gstate)
     {
-      NSGraphicsContext	*context = GSCurrentContext();
-      DPSgsave(context);
-      DPSsetgstate(context, _gstate);
+      // FIXME: move this into NSGraphicsContext
+      [NSGraphicsContext saveGraphicsState];
+      [NSGraphicsContext setCurrentContext: _context];
+      DPSsetgstate(_context, _gstate);
       [GSServerForWindow(self) windowdevice: _windowNum];
-      GSReplaceGState(context, _gstate);
-      DPSgrestore(context);
+      GSReplaceGState(_context, _gstate);
+      [NSGraphicsContext restoreGraphicsState];
     }
 
   [self update];