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