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