chrome/browser/ui/views/toolbar/back_button.cc

   1 // Copyright 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 #include "chrome/browser/ui/views/toolbar/back_button.h"
   6
   7 #include "ui/gfx/insets.h"
   8 #include "ui/views/controls/button/label_button_border.h"
   9 #include "ui/views/painter.h"
  10
  11 BackButton::BackButton(views::ButtonListener* listener,
  12                        ui::MenuModel* model)
  13     : ToolbarButton(listener, model),
  14       margin_leading_(0) {
  15 }
  16
  17 BackButton::~BackButton() {
  18 }
  19
  20 gfx::Rect BackButton::GetThemePaintRect() const  {
  21   gfx::Rect rect(LabelButton::GetThemePaintRect());
  22   rect.Inset(margin_leading_, 0, 0, 0);
  23   return rect;
  24 }
  25
  26 void BackButton::SetLeadingMargin(int margin) {
  27   // Adjust border insets to follow the margin change,
  28   // which will be reflected in where the border is painted
  29   // through |GetThemePaintRect|.
  30   views::LabelButtonBorder* border = new views::LabelButtonBorder(style());
  31   const gfx::Insets insets(border->GetInsets());
  32   border->set_insets(gfx::Insets(insets.top(), insets.left() + margin,
  33                                  insets.bottom(), insets.right()));
  34   set_border(border);
  35
  36   // Similarly fiddle the focus border. Value consistent with LabelButton
  37   // and TextButton.
  38   // TODO(gbillock): Refactor this magic number somewhere global to views,
  39   // probably a FocusBorder constant.
  40   const int kFocusRectInset = 3;
  41   SetFocusPainter(views::Painter::CreateDashedFocusPainterWithInsets(
  42                       gfx::Insets(kFocusRectInset, kFocusRectInset + margin,
  43                                   kFocusRectInset, kFocusRectInset)));
  44
  45   margin_leading_ = margin;
  46   InvalidateLayout();
  47 }