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/view_targeter.h"
  24 #include "ui/views/widget/widget.h"
  25
  26 static inline int Round(double x) {
  27   return static_cast<int>(x + 0.5);
  28 }
  29
  30 // static
  31 const char AvatarMenuButton::kViewClassName[] = "AvatarMenuButton";
  32
  33 AvatarMenuButton::AvatarMenuButton(Browser* browser, bool disabled)
  34     : MenuButton(NULL, base::string16(), this, false),
  35       browser_(browser),
  36       disabled_(disabled),
  37       is_rectangle_(false),
  38       old_height_(0),
  39       button_on_right_(false) {
  40   // In RTL mode, the avatar icon should be looking the opposite direction.
  41   EnableCanvasFlippingForRTLUI(true);
  42
  43   SetEventTargeter(
  44       scoped_ptr<views::ViewTargeter>(new views::ViewTargeter(this)));
  45 }
  46
  47 AvatarMenuButton::~AvatarMenuButton() {
  48 }
  49
  50 const char* AvatarMenuButton::GetClassName() const {
  51   return kViewClassName;
  52 }
  53
  54 void AvatarMenuButton::OnPaint(gfx::Canvas* canvas) {
  55   if (!icon_.get())
  56     return;
  57
  58   if (old_height_ != height() || button_icon_.isNull()) {
  59     old_height_ = height();
  60     button_icon_ = *profiles::GetAvatarIconForTitleBar(
  61         *icon_, is_rectangle_, width(), height()).ToImageSkia();
  62   }
  63
  64   // Scale the image to fit the width of the button.
  65   int dst_width = std::min(button_icon_.width(), width());
  66   // Truncate rather than rounding, so that for odd widths we put the extra
  67   // pixel on the left.
  68   int dst_x = (width() - dst_width) / 2;
  69
  70   // Scale the height and maintain aspect ratio. This means that the
  71   // icon may not fit in the view. That's ok, we just vertically center it.
  72   float scale =
  73       static_cast<float>(dst_width) / static_cast<float>(button_icon_.width());
  74   // Round here so that we minimize the aspect ratio drift.
  75   int dst_height = Round(button_icon_.height() * scale);
  76   // Round rather than truncating, so that for odd heights we select an extra
  77   // pixel below the image center rather than above.  This is because the
  78   // incognito image has shadows at the top that make the apparent center below
  79   // the real center.
  80   int dst_y = Round((height() - dst_height) / 2.0);
  81   canvas->DrawImageInt(button_icon_, 0, 0, button_icon_.width(),
  82       button_icon_.height(), dst_x, dst_y, dst_width, dst_height, false);
  83 }
  84
  85 void AvatarMenuButton::SetAvatarIcon(const gfx::Image& icon,
  86                                      bool is_rectangle) {
  87   icon_.reset(new gfx::Image(icon));
  88   button_icon_ = gfx::ImageSkia();
  89   is_rectangle_ = is_rectangle;
  90   SchedulePaint();
  91 }
  92
  93 // views::ViewTargeterDelegate:
  94 bool AvatarMenuButton::DoesIntersectRect(const views::View* target,
  95                                          const gfx::Rect& rect) const {
  96   CHECK_EQ(target, this);
  97   return !disabled_ &&
  98          views::ViewTargeterDelegate::DoesIntersectRect(target, rect);
  99 }
 100
 101 // views::MenuButtonListener implementation
 102 void AvatarMenuButton::OnMenuButtonClicked(views::View* source,
 103                                            const gfx::Point& point) {
 104   if (!disabled_)
 105     chrome::ShowAvatarMenu(browser_);
 106 }