back_button.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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
11BackButton::BackButton(views::ButtonListener* listener,
12                       ui::MenuModel* model)
13    : ToolbarButton(listener, model),
14      margin_leading_(0) {
15}
16
17BackButton::~BackButton() {
18}
19
20gfx::Rect BackButton::GetThemePaintRect() const  {
21  gfx::Rect rect(LabelButton::GetThemePaintRect());
22  rect.Inset(margin_leading_, 0, 0, 0);
23  return rect;
24}
25
26void 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  scoped_ptr<views::LabelButtonBorder> border(
31      new views::LabelButtonBorder(style()));
32  const gfx::Insets insets(border->GetInsets());
33  border->set_insets(gfx::Insets(insets.top(), insets.left() + margin,
34                                 insets.bottom(), insets.right()));
35  UpdateThemedBorder(border.PassAs<views::Border>());
36
37  // Similarly fiddle the focus border. Value consistent with LabelButton
38  // and TextButton.
39  // TODO(gbillock): Refactor this magic number somewhere global to views,
40  // probably a FocusBorder constant.
41  const int kFocusRectInset = 3;
42  SetFocusPainter(views::Painter::CreateDashedFocusPainterWithInsets(
43                      gfx::Insets(kFocusRectInset, kFocusRectInset + margin,
44                                  kFocusRectInset, kFocusRectInset)));
45
46  margin_leading_ = margin;
47  InvalidateLayout();
48}
49