1// Copyright 2014 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/profiles/avatar_label.h"
6
7#include "base/memory/scoped_ptr.h"
8#include "chrome/browser/signin/signin_header_helper.h"
9#include "chrome/browser/themes/theme_properties.h"
10#include "chrome/browser/ui/views/frame/browser_view.h"
11#include "chrome/grit/generated_resources.h"
12#include "grit/theme_resources.h"
13#include "ui/base/l10n/l10n_util.h"
14#include "ui/base/theme_provider.h"
15#include "ui/gfx/canvas.h"
16#include "ui/gfx/color_utils.h"
17#include "ui/views/border.h"
18#include "ui/views/painter.h"
19
20namespace {
21
22// A custom border for the supervised user avatar label.
23class AvatarLabelBorder : public views::Border {
24 public:
25  explicit AvatarLabelBorder(bool label_on_right);
26
27  // views::Border:
28  virtual void Paint(const views::View& view, gfx::Canvas* canvas) OVERRIDE;
29  virtual gfx::Insets GetInsets() const OVERRIDE;
30  virtual gfx::Size GetMinimumSize() const OVERRIDE;
31
32 private:
33  scoped_ptr<views::Painter> painter_;
34  gfx::Insets insets_;
35
36  DISALLOW_COPY_AND_ASSIGN(AvatarLabelBorder);
37};
38
39AvatarLabelBorder::AvatarLabelBorder(bool label_on_right) {
40  const int kHorizontalInsetRight = label_on_right ? 43 : 10;
41  const int kHorizontalInsetLeft = label_on_right ? 10 : 43;
42  const int kVerticalInsetTop = 2;
43  const int kVerticalInsetBottom = 3;
44  // We want to align with the top of the tab. This works if the default font
45  // size is 13. If it is smaller, we need to increase the TopInset accordingly.
46  const int difference = std::max<int>(0, 13 - gfx::FontList().GetFontSize());
47  const int addToTop = difference / 2;
48  const int addToBottom = difference - addToTop;
49  insets_ = gfx::Insets(kVerticalInsetTop + addToTop,
50                        kHorizontalInsetLeft,
51                        kVerticalInsetBottom + addToBottom,
52                        kHorizontalInsetRight);
53  const int kImages[] = IMAGE_GRID(IDR_SUPERVISED_USER_LABEL);
54  painter_.reset(views::Painter::CreateImageGridPainter(kImages));
55}
56
57void AvatarLabelBorder::Paint(const views::View& view, gfx::Canvas* canvas) {
58  // Paint the default background using the image assets provided by UI. This
59  // includes a border with almost transparent white color.
60  painter_->Paint(canvas, view.size());
61
62  // Repaint the inner part of the background in order to be able to change
63  // the colors according to the currently installed theme.
64  gfx::Rect rect(1, 1, view.size().width() - 2, view.size().height() - 2);
65  SkPaint paint;
66  int kRadius = 2;
67  SkColor background_color = view.GetThemeProvider()->GetColor(
68      ThemeProperties::COLOR_SUPERVISED_USER_LABEL_BACKGROUND);
69  paint.setStyle(SkPaint::kFill_Style);
70
71  // Paint the inner border with a color slightly darker than the background.
72  SkAlpha kAlphaForBlending = 230;
73  paint.setColor(color_utils::AlphaBlend(
74      background_color, SK_ColorBLACK, kAlphaForBlending));
75  canvas->DrawRoundRect(rect, kRadius, paint);
76
77  // Paint the inner background using the color provided by the ThemeProvider.
78  paint.setColor(background_color);
79  rect = gfx::Rect(2, 2, view.size().width() - 4, view.size().height() - 4);
80  canvas->DrawRoundRect(rect, kRadius, paint);
81}
82
83gfx::Insets AvatarLabelBorder::GetInsets() const {
84  return insets_;
85}
86
87gfx::Size AvatarLabelBorder::GetMinimumSize() const {
88  gfx::Size size(4, 4);
89  size.SetToMax(painter_->GetMinimumSize());
90  return size;
91}
92
93}  // namespace
94
95AvatarLabel::AvatarLabel(BrowserView* browser_view)
96    : LabelButton(NULL,
97                  l10n_util::GetStringUTF16(IDS_SUPERVISED_USER_AVATAR_LABEL)),
98      browser_view_(browser_view) {
99  SetLabelOnRight(false);
100  UpdateLabelStyle();
101}
102
103AvatarLabel::~AvatarLabel() {}
104
105bool AvatarLabel::OnMousePressed(const ui::MouseEvent& event) {
106  if (!LabelButton::OnMousePressed(event))
107    return false;
108
109  browser_view_->ShowAvatarBubbleFromAvatarButton(
110      BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT,
111      signin::ManageAccountsParams());
112  return true;
113}
114
115void AvatarLabel::UpdateLabelStyle() {
116  // |browser_view_| can be NULL in unit tests.
117  if (!browser_view_)
118    return;
119
120  SkColor color_label = browser_view_->frame()->GetThemeProvider()->GetColor(
121      ThemeProperties::COLOR_SUPERVISED_USER_LABEL);
122  for (size_t state = 0; state < STATE_COUNT; ++state)
123    SetTextColor(static_cast<ButtonState>(state), color_label);
124  SchedulePaint();
125}
126
127void AvatarLabel::SetLabelOnRight(bool label_on_right) {
128  SetBorder(scoped_ptr<views::Border>(new AvatarLabelBorder(label_on_right)));
129}
130