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      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 }
     98