chrome/browser/ui/views/profiles/avatar_menu_button.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_menu_button.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "chrome/browser/browser_process.h"
  10 #include "chrome/browser/chrome_notification_types.h"
  11 #include "chrome/browser/profiles/avatar_menu.h"
  12 #include "chrome/browser/profiles/profile_avatar_icon_util.h"
  13 #include "chrome/browser/profiles/profile_metrics.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/browser_commands.h"
  16 #include "chrome/browser/ui/views/frame/browser_view.h"
  17 #include "chrome/browser/ui/views/profiles/avatar_menu_bubble_view.h"
  18 #include "chrome/browser/ui/views/profiles/profile_chooser_view.h"
  19 #include "chrome/common/pref_names.h"
  20 #include "components/signin/core/common/profile_management_switches.h"
  21 #include "content/public/browser/notification_service.h"
  22 #include "ui/gfx/canvas.h"
  23 #include "ui/views/widget/widget.h"
  24
  25 static inline int Round(double x) {
  26   return static_cast<int>(x + 0.5);
  27 }
  28
  29 // static
  30 const char AvatarMenuButton::kViewClassName[] = "AvatarMenuButton";
  31
  32 AvatarMenuButton::AvatarMenuButton(Browser* browser, bool disabled)
  33     : MenuButton(NULL, base::string16(), this, false),
  34       browser_(browser),
  35       disabled_(disabled),
  36       is_rectangle_(false),
  37       old_height_(0) {
  38   // In RTL mode, the avatar icon should be looking the opposite direction.
  39   EnableCanvasFlippingForRTLUI(true);
  40 }
  41
  42 AvatarMenuButton::~AvatarMenuButton() {
  43 }
  44
  45 const char* AvatarMenuButton::GetClassName() const {
  46   return kViewClassName;
  47 }
  48
  49 void AvatarMenuButton::OnPaint(gfx::Canvas* canvas) {
  50   if (!icon_.get())
  51     return;
  52
  53   if (old_height_ != height() || button_icon_.isNull()) {
  54     old_height_ = height();
  55     button_icon_ = *profiles::GetAvatarIconForTitleBar(
  56         *icon_, is_rectangle_, width(), height()).ToImageSkia();
  57   }
  58
  59   // Scale the image to fit the width of the button.
  60   int dst_width = std::min(button_icon_.width(), width());
  61   // Truncate rather than rounding, so that for odd widths we put the extra
  62   // pixel on the left.
  63   int dst_x = (width() - dst_width) / 2;
  64
  65   // Scale the height and maintain aspect ratio. This means that the
  66   // icon may not fit in the view. That's ok, we just vertically center it.
  67   float scale =
  68       static_cast<float>(dst_width) / static_cast<float>(button_icon_.width());
  69   // Round here so that we minimize the aspect ratio drift.
  70   int dst_height = Round(button_icon_.height() * scale);
  71   // Round rather than truncating, so that for odd heights we select an extra
  72   // pixel below the image center rather than above.  This is because the
  73   // incognito image has shadows at the top that make the apparent center below
  74   // the real center.
  75   int dst_y = Round((height() - dst_height) / 2.0);
  76   canvas->DrawImageInt(button_icon_, 0, 0, button_icon_.width(),
  77       button_icon_.height(), dst_x, dst_y, dst_width, dst_height, false);
  78 }
  79
  80 bool AvatarMenuButton::HitTestRect(const gfx::Rect& rect) const {
  81   return !disabled_ && views::MenuButton::HitTestRect(rect);
  82 }
  83
  84 void AvatarMenuButton::SetAvatarIcon(const gfx::Image& icon,
  85                                      bool is_rectangle) {
  86   icon_.reset(new gfx::Image(icon));
  87   button_icon_ = gfx::ImageSkia();
  88   is_rectangle_ = is_rectangle;
  89   SchedulePaint();
  90 }
  91
  92 // views::MenuButtonListener implementation
  93 void AvatarMenuButton::OnMenuButtonClicked(views::View* source,
  94                                            const gfx::Point& point) {
  95   if (!disabled_)
  96     chrome::ShowAvatarMenu(browser_);
  97 }