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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/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 }
    107