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/geometry/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 BackButton::~BackButton() {}
  17
  18 void BackButton::SetLeadingMargin(int margin) {
  19   margin_leading_ = margin;
  20
  21   UpdateThemedBorder();
  22
  23   // Similarly fiddle the focus border. Value consistent with LabelButton.
  24   // TODO(gbillock): Refactor this magic number somewhere global to views,
  25   // probably a FocusBorder constant.
  26   const int kFocusRectInset = 3;
  27   SetFocusPainter(views::Painter::CreateDashedFocusPainterWithInsets(
  28                       gfx::Insets(kFocusRectInset, kFocusRectInset + margin,
  29                                   kFocusRectInset, kFocusRectInset)));
  30
  31   InvalidateLayout();
  32 }
  33
  34 const char* BackButton::GetClassName() const {
  35   return "BackButton";
  36 }
  37
  38 scoped_ptr<views::LabelButtonBorder> BackButton::CreateDefaultBorder() const {
  39   scoped_ptr<views::LabelButtonBorder> border =
  40       ToolbarButton::CreateDefaultBorder();
  41
  42   // Adjust border insets to follow the margin change,
  43   // which will be reflected in where the border is painted
  44   // through |GetThemePaintRect|.
  45   const gfx::Insets insets(border->GetInsets());
  46   border->set_insets(gfx::Insets(insets.top(), insets.left() + margin_leading_,
  47                                  insets.bottom(), insets.right()));
  48
  49   return border.Pass();
  50 }
  51
  52 gfx::Rect BackButton::GetThemePaintRect() const  {
  53   gfx::Rect rect(LabelButton::GetThemePaintRect());
  54   rect.Inset(margin_leading_, 0, 0, 0);
  55   return rect;
  56 }
  57