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/animation/ink_drop_animation_controller.h"
   9 #include "ui/views/controls/button/label_button_border.h"
  10 #include "ui/views/painter.h"
  11
  12 BackButton::BackButton(views::ButtonListener* listener,
  13                        ui::MenuModel* model)
  14     : ToolbarButton(listener, model),
  15       margin_leading_(0) {}
  16
  17 BackButton::~BackButton() {}
  18
  19 void BackButton::SetLeadingMargin(int margin) {
  20   margin_leading_ = margin;
  21
  22   UpdateThemedBorder();
  23
  24   // Similarly fiddle the focus border. Value consistent with LabelButton.
  25   // TODO(gbillock): Refactor this magic number somewhere global to views,
  26   // probably a FocusBorder constant.
  27   const int kFocusRectInset = 3;
  28   SetFocusPainter(views::Painter::CreateDashedFocusPainterWithInsets(
  29                       gfx::Insets(kFocusRectInset, kFocusRectInset + margin,
  30                                   kFocusRectInset, kFocusRectInset)));
  31
  32   InvalidateLayout();
  33 }
  34
  35 gfx::Point BackButton::CalculateInkDropCenter() const {
  36   return gfx::Point((width() + margin_leading_) / 2, height() / 2);
  37 }
  38
  39 const char* BackButton::GetClassName() const {
  40   return "BackButton";
  41 }
  42
  43 scoped_ptr<views::LabelButtonBorder> BackButton::CreateDefaultBorder() const {
  44   scoped_ptr<views::LabelButtonBorder> border =
  45       ToolbarButton::CreateDefaultBorder();
  46
  47   // Adjust border insets to follow the margin change,
  48   // which will be reflected in where the border is painted
  49   // through |GetThemePaintRect|.
  50   const gfx::Insets insets(border->GetInsets());
  51   border->set_insets(gfx::Insets(insets.top(), insets.left() + margin_leading_,
  52                                  insets.bottom(), insets.right()));
  53
  54   return border.Pass();
  55 }
  56
  57 gfx::Rect BackButton::GetThemePaintRect() const  {
  58   gfx::Rect rect(LabelButton::GetThemePaintRect());
  59   rect.Inset(margin_leading_, 0, 0, 0);
  60   return rect;
  61 }
  62