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