ui/base/cocoa/nsgraphics_context_additions.mm

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #import "ui/base/cocoa/nsgraphics_context_additions.h"
   6
   7 @implementation NSGraphicsContext (CrAdditions)
   8
   9 - (void)cr_setPatternPhase:(NSPoint)phase
  10                    forView:(NSView*)view {
  11   NSView* ancestorWithLayer = view;
  12   while (ancestorWithLayer && ![ancestorWithLayer layer])
  13     ancestorWithLayer = [ancestorWithLayer superview];
  14   if (ancestorWithLayer) {
  15     NSPoint bottomLeft = NSZeroPoint;
  16     if ([ancestorWithLayer isFlipped])
  17       bottomLeft.y = NSMaxY([ancestorWithLayer bounds]);
  18     NSPoint offset = [ancestorWithLayer convertPoint:bottomLeft toView:nil];
  19     phase.x -= offset.x;
  20     phase.y -= offset.y;
  21   }
  22   [self setPatternPhase:phase];
  23 }
  24
  25 @end