General tidyup - make updates work properly etc.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@3647 72102866-910b-0410-8b05-ffd578937521

Source/NSApplication.m

@@ -1220,23 +1220,25 @@ BOOL done = NO;
   windows_need_update = flag;
 }
 
-- (void)updateWindows                               // send an update message
+- (void) updateWindows                               // send an update message
 {                                                   // to all visible windows
-int i, count;
-NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  int i, count;
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
   NSArray *window_list = [self windows];
+
+  windows_need_update = NO;
                                                     // notify that an update is
                                                     // imminent
-    [nc postNotificationName:NSApplicationWillUpdateNotification object:self];
+  [nc postNotificationName:NSApplicationWillUpdateNotification object: self];
 
-    for (i = 0, count = [window_list count]; i < count; i++)
-        {
-        NSWindow *win = [window_list objectAtIndex:i];
-        if ([win isVisible])                        // send update only if the
-            [win update];                           // window is visible
-        }
-                                                    // notify update did occur
-    [nc postNotificationName:NSApplicationDidUpdateNotification object:self];
+  for (i = 0, count = [window_list count]; i < count; i++)
+    {
+      NSWindow *win = [window_list objectAtIndex: i];
+      if ([win isVisible])                        // send update only if the
+	[win update];                           // window is visible
+    }
+						  // notify update did occur
+  [nc postNotificationName:NSApplicationDidUpdateNotification object:self];
 }
 
 - (NSArray*) windows

Source/NSClipView.m

@@ -5,14 +5,14 @@
 
    Author: Ovidiu Predescu <ovidiu@net-community.com>
    Date: July 1997
-   
+
    This file is part of the GNUstep GUI Library.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library 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
@@ -42,7 +42,7 @@
   return self;
 }
 
-- (void)setDocumentView:(NSView*)aView
+- (void) setDocumentView: (NSView*)aView
 {
   if (_documentView == aView)
     return;
@@ -81,11 +81,11 @@
   [[self superview] reflectScrolledClipView:self];
 }
 
-- (void)resetCursorRects
+- (void) resetCursorRects
 {
   [self addCursorRect:[self bounds] cursor:_cursor];
 }
- 
+
 - (void) resizeSubviewsWithOldSize: (NSSize)old_size
 {
   [super resizeSubviewsWithOldSize: old_size];
@@ -95,8 +95,11 @@
     }
 }
 
-- (void)scrollToPoint:(NSPoint)point
+- (void) scrollToPoint: (NSPoint)point
 {
+  NSRect originalBounds = [self bounds];
+  NSRect newBounds = originalBounds;
+  NSRect intersection;
 #ifdef DEBUGLOG
   NSPoint currentPoint = [self bounds].origin;
 
@@ -105,26 +108,101 @@
 	point.x, point.y);
 #endif
 
-  point = [self constrainScrollPoint: point];
-  [self setBoundsOrigin: NSMakePoint(point.x, point.y)];
+  newBounds.origin = [self constrainScrollPoint: point];
+
+  if (NSEqualPoints(originalBounds.origin, newBounds.origin))
+    return;
+
+//  [self setBoundsOrigin: newBounds.origin];
 
-  [self setNeedsDisplay: YES];
   if (_copiesOnScroll)
-    /* TODO: move the visible portion of the document */
-    [_documentView displayRect: bounds];
+    {
+      // copy the portion of the view that is common before and after scrolling.
+      // then tell docview to draw the exposed parts.
+      // intersection is the common rectangle
+      intersection = NSIntersectionRect(originalBounds, newBounds);
+      if (NSEqualRects(intersection, NSZeroRect))
+	{
+	  // no intersection -- docview should draw everyting
+	  [self setBoundsOrigin: newBounds.origin];
+	  [_documentView setNeedsDisplayInRect: newBounds];
+	}
+      else
+	{
+	  NSPoint destPoint = intersection.origin;
+	  float dx = newBounds.origin.x - originalBounds.origin.x;
+	  float dy = newBounds.origin.y - originalBounds.origin.y;
+	  destPoint.x -= dx;
+	  destPoint.y -= dy;
+	  [self lockFocus];
+	  NSCopyBits(0, intersection, destPoint);
+	  [self unlockFocus];
+
+	  [self setBoundsOrigin: newBounds.origin];
+	  if (dx != 0)
+	    {
+	      // moved in x -- redraw a full-height rectangle at
+	      // side of intersection
+	      NSRect redrawRect;
+
+	      redrawRect.origin.y = newBounds.origin.y;
+	      redrawRect.size.height = newBounds.size.height;
+	      redrawRect.size.width = newBounds.size.width
+					- intersection.size.width;
+	      if (dx < 0)
+		{
+		  // moved to the left -- redraw at left of intersection
+		  redrawRect.origin.x = newBounds.origin.x;
+		}
+	      else
+		{
+		  // moved to the right -- redraw at right of intersection
+		  redrawRect.origin.x = newBounds.origin.x
+					+ intersection.size.width;
+		}
+	      [_documentView setNeedsDisplayInRect: redrawRect];
+	    }
+
+	  if (dy != 0)
+	    {
+	      // moved in y
+	      // -- redraw rectangle with intersection's width over or under it
+	      NSRect redrawRect;
+
+	      redrawRect.origin.x = intersection.origin.x;
+	      redrawRect.size.width = intersection.size.width;
+	      redrawRect.size.height = newBounds.size.height
+					- intersection.size.height;
+	      if (dy < 0)
+		{
+		  // moved down -- redraw under intersection
+		  redrawRect.origin.y = newBounds.origin.y;
+		}
+	      else
+		{
+		  // moved up -- redraw over intersection
+		  redrawRect.origin.y = newBounds.origin.y
+					+ intersection.size.height;
+		}
+	      [_documentView setNeedsDisplayInRect: redrawRect];
+	    }
+	}
+    }
   else
-    [_documentView setNeedsDisplayInRect: bounds];
-//    [_documentView setNeedsDisplay: YES];
-[self display];
+    {
+      // dont copy anything -- docview draws it all
+      [self setBoundsOrigin: newBounds.origin];
+      [_documentView setNeedsDisplayInRect: newBounds];
+    }
 }
 
-- (NSPoint)constrainScrollPoint:(NSPoint)proposedNewOrigin
+- (NSPoint) constrainScrollPoint: (NSPoint)proposedNewOrigin
 {
   NSRect	documentFrame = [_documentView frame];
   NSPoint	new = proposedNewOrigin;
 
   if (documentFrame.size.width <= bounds.size.width)
-    new.x = 0.0;
+    new.x = documentFrame.origin.x;
   else if (proposedNewOrigin.x <= documentFrame.origin.x)
     new.x = documentFrame.origin.x;
   else if (proposedNewOrigin.x
@@ -145,7 +223,7 @@
   else
     {
       if (documentFrame.size.height <= bounds.size.height)
-	new.y = 0.0;
+	new.y = documentFrame.origin.y;
       else if (proposedNewOrigin.y <= documentFrame.origin.y)
 	new.y = documentFrame.origin.y;
       else if (proposedNewOrigin.y
@@ -156,7 +234,7 @@
   return new;
 }
 
-- (NSRect)documentRect
+- (NSRect) documentRect
 {
   NSRect documentFrame = [_documentView frame];
   NSRect clipViewBounds = bounds;
@@ -169,7 +247,7 @@
   return rect;
 }
 
-- (NSRect)documentVisibleRect
+- (NSRect) documentVisibleRect
 {
   NSRect documentBounds = [_documentView bounds];
   NSRect clipViewBounds = bounds;
@@ -183,97 +261,132 @@
   return rect;
 }
 
-- (void) drawRect:(NSRect)rect
+- (void) drawRect: (NSRect)rect
 {
   [[self backgroundColor] set];
   NSRectFill(rect);
 }
 
-- (BOOL)autoscroll:(NSEvent*)theEvent
+- (BOOL) autoscroll: (NSEvent*)theEvent
 {
   return 0;
 }
 
-- (void)viewBoundsChanged:(NSNotification*)aNotification
+- (void) viewBoundsChanged: (NSNotification*)aNotification
 {
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)viewFrameChanged:(NSNotification*)aNotification
+- (void) viewFrameChanged: (NSNotification*)aNotification
 {
   [self setBoundsOrigin: [self constrainScrollPoint: bounds.origin]];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)scaleUnitSquareToSize:(NSSize)newUnitSize
+- (void) scaleUnitSquareToSize: (NSSize)newUnitSize
 {
   [super scaleUnitSquareToSize:newUnitSize];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)setBoundsOrigin:(NSPoint)aPoint
+- (void) setBoundsOrigin: (NSPoint)aPoint
 {
   [super setBoundsOrigin:aPoint];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)setBoundsSize:(NSSize)aSize
+- (void) setBoundsSize: (NSSize)aSize
 {
   [super setBoundsSize:aSize];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)setFrameSize:(NSSize)aSize
+- (void) setFrameSize: (NSSize)aSize
 {
   [super setFrameSize:aSize];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)setFrameOrigin:(NSPoint)aPoint
+- (void) setFrameOrigin: (NSPoint)aPoint
 {
   [super setFrameOrigin:aPoint];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)setFrame:(NSRect)rect
+- (void) setFrame: (NSRect)rect
 {
   [super setFrame:rect];
   [super_view reflectScrolledClipView:self];
 }
 
-- (void)translateOriginToPoint:(NSPoint)aPoint
+- (void) translateOriginToPoint: (NSPoint)aPoint
 {
   [super translateOriginToPoint:aPoint];
   [super_view reflectScrolledClipView:self];
 }
 
-- (BOOL)isOpaque								{ return YES; }
-- (id)documentView								{ return _documentView; }
-- (void)setCopiesOnScroll:(BOOL)flag			{ _copiesOnScroll = flag; }
-- (BOOL)copiesOnScroll							{ return _copiesOnScroll; }
-- (void)setDocumentCursor:(NSCursor*)aCursor	{ ASSIGN(_cursor, aCursor); }
-- (NSCursor*)documentCursor						{ return _cursor; }
-- (NSColor*)backgroundColor						{ return _backgroundColor; }
-- (BOOL)isFlipped						{ return [_documentView isFlipped]; }
-- (BOOL)acceptsFirstResponder			{ return _documentView != nil; }
+- (BOOL) isOpaque
+{
+  return YES;
+}
 
-- (void)setBackgroundColor:(NSColor*)aColor
+- (id) documentView
+{
+  return _documentView;
+}
+
+- (void) setCopiesOnScroll: (BOOL)flag
+{
+  _copiesOnScroll = flag;
+}
+
+- (BOOL) copiesOnScroll
+{
+  return _copiesOnScroll;
+}
+
+- (void) setDocumentCursor: (NSCursor*)aCursor
+{
+  ASSIGN(_cursor, aCursor);
+}
+
+- (NSCursor*) documentCursor
+{
+  return _cursor;
+}
+
+- (NSColor*) backgroundColor
+{
+  return _backgroundColor;
+}
+
+- (BOOL) isFlipped
+{
+  return [_documentView isFlipped];
+}
+
+- (BOOL) acceptsFirstResponder
+{
+  return _documentView != nil;
+}
+
+- (void) setBackgroundColor: (NSColor*)aColor
 {
   ASSIGN(_backgroundColor, aColor);
 }
 
 /* Disable rotation of clip view */
-- (void)rotateByAngle:(float)angle
+- (void) rotateByAngle: (float)angle
 {}
 
-- (void)setBoundsRotation:(float)angle
+- (void) setBoundsRotation: (float)angle
 {}
 
-- (void)setFrameRotation:(float)angle
+- (void) setFrameRotation: (float)angle
 {}
 
 /* Managing responder chain */
-- (BOOL)becomeFirstResponder
+- (BOOL) becomeFirstResponder
 {
   return [_documentView becomeFirstResponder];
 }

Source/NSWindow.m

@@ -561,7 +561,13 @@ NSPoint basePoint;
 - (BOOL)isAutodisplay                       { return is_autodisplay; }
 - (BOOL)isFlushWindowDisabled               { return disable_flush_window; }
 - (void)setAutodisplay:(BOOL)flag           { is_autodisplay = flag; }
-- (void)setViewsNeedDisplay:(BOOL)flag      { needs_display = flag; }
+
+- (void) setViewsNeedDisplay: (BOOL)flag
+{
+  needs_display = flag;
+  [[NSApplication sharedApplication] setWindowsNeedUpdate: YES];
+}
+
 - (BOOL)viewsNeedDisplay                    { return needs_display; }
 - (void)useOptimizedDrawing:(BOOL)flag      { optimize_drawing = flag; }