chrome/browser/ui/views/profiles/supervised_user_avatar_label.cc

   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/supervised_user_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
  20 namespace {
  21
  22 // A custom border for the supervised user avatar label.
  23 class SupervisedUserAvatarLabelBorder : public views::Border {
  24  public:
  25   explicit SupervisedUserAvatarLabelBorder(bool label_on_right);
  26
  27   // views::Border:
  28   void Paint(const views::View& view, gfx::Canvas* canvas) override;
  29   gfx::Insets GetInsets() const override;
  30   gfx::Size GetMinimumSize() const override;
  31
  32  private:
  33   scoped_ptr<views::Painter> painter_;
  34   gfx::Insets insets_;
  35
  36   DISALLOW_COPY_AND_ASSIGN(SupervisedUserAvatarLabelBorder);
  37 };
  38
  39 SupervisedUserAvatarLabelBorder::SupervisedUserAvatarLabelBorder(
  40     bool label_on_right) {
  41   const int kHorizontalInsetRight = label_on_right ? 43 : 10;
  42   const int kHorizontalInsetLeft = label_on_right ? 10 : 43;
  43   const int kVerticalInsetTop = 2;
  44   const int kVerticalInsetBottom = 3;
  45   // We want to align with the top of the tab. This works if the default font
  46   // size is 13. If it is smaller, we need to increase the TopInset accordingly.
  47   const int difference = std::max<int>(0, 13 - gfx::FontList().GetFontSize());
  48   const int addToTop = difference / 2;
  49   const int addToBottom = difference - addToTop;
  50   insets_ = gfx::Insets(kVerticalInsetTop + addToTop,
  51                         kHorizontalInsetLeft,
  52                         kVerticalInsetBottom + addToBottom,
  53                         kHorizontalInsetRight);
  54   const int kImages[] = IMAGE_GRID(IDR_SUPERVISED_USER_LABEL);
  55   painter_.reset(views::Painter::CreateImageGridPainter(kImages));
  56 }
  57
  58 void SupervisedUserAvatarLabelBorder::Paint(
  59     const views::View& view, gfx::Canvas* canvas) {
  60   // Paint the default background using the image assets provided by UI. This
  61   // includes a border with almost transparent white color.
  62   painter_->Paint(canvas, view.size());
  63
  64   // Repaint the inner part of the background in order to be able to change
  65   // the colors according to the currently installed theme.
  66   gfx::Rect rect(1, 1, view.size().width() - 2, view.size().height() - 2);
  67   SkPaint paint;
  68   int kRadius = 2;
  69   SkColor background_color = view.GetThemeProvider()->GetColor(
  70       ThemeProperties::COLOR_SUPERVISED_USER_LABEL_BACKGROUND);
  71   paint.setStyle(SkPaint::kFill_Style);
  72
  73   // Paint the inner border with a color slightly darker than the background.
  74   SkAlpha kAlphaForBlending = 230;
  75   paint.setColor(color_utils::AlphaBlend(
  76       background_color, SK_ColorBLACK, kAlphaForBlending));
  77   canvas->DrawRoundRect(rect, kRadius, paint);
  78
  79   // Paint the inner background using the color provided by the ThemeProvider.
  80   paint.setColor(background_color);
  81   rect = gfx::Rect(2, 2, view.size().width() - 4, view.size().height() - 4);
  82   canvas->DrawRoundRect(rect, kRadius, paint);
  83 }
  84
  85 gfx::Insets SupervisedUserAvatarLabelBorder::GetInsets() const {
  86   return insets_;
  87 }
  88
  89 gfx::Size SupervisedUserAvatarLabelBorder::GetMinimumSize() const {
  90   gfx::Size size(4, 4);
  91   size.SetToMax(painter_->GetMinimumSize());
  92   return size;
  93 }
  94
  95 }  // namespace
  96
  97 SupervisedUserAvatarLabel::SupervisedUserAvatarLabel(BrowserView* browser_view)
  98     : LabelButton(NULL,
  99                   l10n_util::GetStringUTF16(IDS_SUPERVISED_USER_AVATAR_LABEL)),
 100       browser_view_(browser_view) {
 101   SetLabelOnRight(false);
 102   UpdateLabelStyle();
 103 }
 104
 105 SupervisedUserAvatarLabel::~SupervisedUserAvatarLabel() {}
 106
 107 bool SupervisedUserAvatarLabel::OnMousePressed(const ui::MouseEvent& event) {
 108   if (!LabelButton::OnMousePressed(event))
 109     return false;
 110
 111   browser_view_->ShowAvatarBubbleFromAvatarButton(
 112       BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT,
 113       signin::ManageAccountsParams());
 114   return true;
 115 }
 116
 117 void SupervisedUserAvatarLabel::UpdateLabelStyle() {
 118   // |browser_view_| can be NULL in unit tests.
 119   if (!browser_view_)
 120     return;
 121
 122   SkColor color_label = browser_view_->frame()->GetThemeProvider()->GetColor(
 123       ThemeProperties::COLOR_SUPERVISED_USER_LABEL);
 124   for (size_t state = 0; state < STATE_COUNT; ++state)
 125     SetTextColor(static_cast<ButtonState>(state), color_label);
 126   SchedulePaint();
 127 }
 128
 129 void SupervisedUserAvatarLabel::SetLabelOnRight(bool label_on_right) {
 130   SetBorder(scoped_ptr<views::Border>(
 131       new SupervisedUserAvatarLabelBorder(label_on_right)));
 132 }