chrome/browser/ui/cocoa/download/download_show_all_button.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/download/download_show_all_button.h"
   6
   7 #include "base/logging.h"
   8 #import "chrome/browser/ui/cocoa/download/download_show_all_cell.h"
   9 #import "chrome/browser/ui/cocoa/view_id_util.h"
  10 #include "grit/theme_resources.h"
  11 #import "ui/base/cocoa/nsview_additions.h"
  12 #include "ui/base/resource/resource_bundle.h"
  13 #include "ui/gfx/image/image.h"
  14
  15 @implementation DownloadShowAllButton
  16
  17 - (void)awakeFromNib {
  18   DCHECK([[self cell] isKindOfClass:[DownloadShowAllCell class]]);
  19   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
  20   NSImage* favicon = rb.GetNativeImageNamed(IDR_DOWNLOADS_FAVICON).ToNSImage();
  21   [self setImage:favicon];
  22 }
  23
  24 // GTM's layout tweaker calls sizeToFit to receive the desired width of views.
  25 // By default, buttons will be only 14px high, but the Show All button needs to
  26 // be higher.
  27 - (void)sizeToFit {
  28   NSRect oldRect = [self frame];
  29   [super sizeToFit];
  30   NSRect newRect = [self frame];
  31
  32   // Keep old height.
  33   newRect.origin.y = oldRect.origin.y;
  34   newRect.size.height = oldRect.size.height;
  35
  36   [self setFrame:newRect];
  37 }
  38
  39 - (BOOL)isOpaque {
  40   // Make this control opaque so that sub-pixel anti-aliasing works when
  41   // CoreAnimation is enabled.
  42   return YES;
  43 }
  44
  45 - (void)drawRect:(NSRect)rect {
  46   NSView* downloadShelfView = [self ancestorWithViewID:VIEW_ID_DOWNLOAD_SHELF];
  47   // Previously the show all button used cr_drawUsingAncestor:inRect: to use
  48   // the download shelf to draw its background. However when the download
  49   // shelf has zero height, the shelf's drawing methods don't work as expected
  50   // because they constrain their drawing to the shelf's bounds rect. This
  51   // situation occurs sometimes when the shelf is about to become visible,
  52   // and the result is a very dark show all button
  53   //
  54   // To work around this problem, we'll call a variant of that method which
  55   // does restrict drawing to the ancestor view's bounds.
  56   [self cr_drawUsingAncestor:downloadShelfView
  57                       inRect:rect
  58      clippedToAncestorBounds:NO];
  59   [super drawRect:rect];
  60 }
  61
  62 // ThemedWindowDrawing implementation.
  63
  64 - (void)windowDidChangeTheme {
  65   [self setNeedsDisplay:YES];
  66 }
  67
  68 - (void)windowDidChangeActive {
  69   [self setNeedsDisplay:YES];
  70 }
  71
  72 @end