chrome/browser/ui/cocoa/nsview_additions.mm

   1 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/nsview_additions.h"
   6
   7 #include "base/logging.h"
   8
   9 #if !defined(MAC_OS_X_VERSION_10_7) || \
  10     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
  11
  12 @interface NSView (LionAPI)
  13 - (NSSize)convertSizeFromBacking:(NSSize)size;
  14 @end
  15
  16 #endif  // 10.7
  17
  18 @implementation NSView (ChromeAdditions)
  19
  20 - (CGFloat)cr_lineWidth {
  21   // All shipping retina macs run at least 10.7.
  22   if (![self respondsToSelector:@selector(convertSizeFromBacking:)])
  23     return 1;
  24   return [self convertSizeFromBacking:NSMakeSize(1, 1)].width;
  25 }
  26
  27 - (BOOL)cr_isMouseInView {
  28   NSPoint mouseLoc = [[self window] mouseLocationOutsideOfEventStream];
  29   mouseLoc = [[self superview] convertPoint:mouseLoc fromView:nil];
  30   return [self hitTest:mouseLoc] == self;
  31 }
  32
  33 - (BOOL)cr_isBelowView:(NSView*)otherView {
  34   NSArray* subviews = [[self superview] subviews];
  35
  36   NSUInteger selfIndex = [subviews indexOfObject:self];
  37   DCHECK_NE(NSNotFound, selfIndex);
  38
  39   NSUInteger otherIndex = [subviews indexOfObject:otherView];
  40   DCHECK_NE(NSNotFound, otherIndex);
  41
  42   return selfIndex < otherIndex;
  43 }
  44
  45 - (BOOL)cr_isAboveView:(NSView*)otherView {
  46   return ![self cr_isBelowView:otherView];
  47 }
  48
  49 - (void)cr_ensureSubview:(NSView*)subview
  50             isPositioned:(NSWindowOrderingMode)place
  51               relativeTo:(NSView *)otherView {
  52   DCHECK(place == NSWindowAbove || place == NSWindowBelow);
  53   BOOL isAbove = place == NSWindowAbove;
  54   if ([[subview superview] isEqual:self] &&
  55       [subview cr_isAboveView:otherView] == isAbove) {
  56     return;
  57   }
  58
  59   [subview removeFromSuperview];
  60   [self addSubview:subview
  61         positioned:place
  62         relativeTo:otherView];
  63 }
  64
  65 - (NSColor*)cr_keyboardFocusIndicatorColor {
  66   return [[NSColor keyboardFocusIndicatorColor]
  67       colorWithAlphaComponent:0.5 / [self cr_lineWidth]];
  68 }
  69
  70 - (void)cr_recursivelySetNeedsDisplay:(BOOL)flag {
  71   [self setNeedsDisplay:YES];
  72   for (NSView* child in [self subviews])
  73     [child cr_recursivelySetNeedsDisplay:flag];
  74 }
  75
  76 @end