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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/avatar_menu_button.h"
#include "chrome/browser/profiles/profile_metrics.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/views/avatar_menu_bubble_view.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "ui/gfx/canvas_skia.h"
#include "views/widget/widget.h"
#if defined(OS_WIN)
#include <shobjidl.h>
#include "base/win/scoped_comptr.h"
#include "base/win/windows_version.h"
#include "skia/ext/image_operations.h"
#include "ui/gfx/icon_util.h"
#endif
static inline int Round(double x) {
return static_cast<int>(x + 0.5);
}
// The Windows 7 taskbar supports dynamic overlays and effects, we use this
// to ovelay the avatar icon there. The overlay only applies if the taskbar
// is in "default large icon mode". This function is a best effort deal so
// we bail out silently at any error condition.
// See http://msdn.microsoft.com/en-us/library/dd391696(VS.85).aspx for
// more information.
void DrawTaskBarDecoration(const Browser* browser, const SkBitmap* bitmap) {
#if defined(OS_WIN) && !defined(USE_AURA)
if (base::win::GetVersion() < base::win::VERSION_WIN7)
return;
BrowserWindow* bw = browser->window();
if (!bw)
return;
gfx::NativeWindow window = bw->GetNativeHandle();
if (!window)
return;
base::win::ScopedComPtr<ITaskbarList3> taskbar;
HRESULT result = taskbar.CreateInstance(CLSID_TaskbarList, NULL,
CLSCTX_INPROC_SERVER);
if (FAILED(result) || FAILED(taskbar->HrInit()))
return;
HICON icon = NULL;
if (bitmap) {
const SkBitmap* source_bitmap = NULL;
SkBitmap squarer_bitmap;
if ((bitmap->width() == 38) && (bitmap->height() == 31)) {
// Shave a couple of columns so the bitmap is more square. So when
// resized to a square aspect ratio it looks pretty.
bitmap->extractSubset(&squarer_bitmap, SkIRect::MakeXYWH(2, 0, 34, 31));
source_bitmap = &squarer_bitmap;
} else {
// The bitmaps size has changed. Resize what we have.
source_bitmap = bitmap;
}
// Since the target size is so small, we use our best resizer. Never pass
// windows a different size because it will badly hammer it to 16x16.
SkBitmap sk_icon = skia::ImageOperations::Resize(
*source_bitmap,
skia::ImageOperations::RESIZE_LANCZOS3,
16, 16);
icon = IconUtil::CreateHICONFromSkBitmap(sk_icon);
if (!icon)
return;
}
taskbar->SetOverlayIcon(window, icon, L"");
if (icon)
DestroyIcon(icon);
#endif
}
AvatarMenuButton::AvatarMenuButton(Browser* browser, bool has_menu)
: MenuButton(NULL, string16(), this, false),
browser_(browser),
bubble_(NULL),
has_menu_(has_menu),
set_taskbar_decoration_(false) {
// In RTL mode, the avatar icon should be looking the opposite direction.
EnableCanvasFlippingForRTLUI(true);
}
AvatarMenuButton::~AvatarMenuButton() {
if (bubble_)
OnBubbleClosing();
// During destruction of the browser frame, we might not have a window
// so the taskbar button will be removed by windows anyway.
if (browser_->IsAttemptingToCloseBrowser())
return;
DrawTaskBarDecoration(browser_, NULL);
}
void AvatarMenuButton::OnPaint(gfx::Canvas* canvas) {
const SkBitmap& icon = GetImageToPaint();
if (icon.isNull())
return;
// Scale the image to fit the width of the button.
int dst_width = std::min(icon.width(), width());
// Truncate rather than rounding, so that for odd widths we put the extra
// pixel on the left.
int dst_x = (width() - dst_width) / 2;
// Scale the height and maintain aspect ratio. This means that the
// icon may not fit in the view. That's ok, we just vertically center it.
float scale =
static_cast<float>(dst_width) / static_cast<float>(icon.width());
// Round here so that we minimize the aspect ratio drift.
int dst_height = Round(icon.height() * scale);
// Round rather than truncating, so that for odd heights we select an extra
// pixel below the image center rather than above. This is because the
// incognito image has shadows at the top that make the apparent center below
// the real center.
int dst_y = Round((height() - dst_height) / 2.0);
canvas->DrawBitmapInt(icon, 0, 0, icon.width(), icon.height(),
dst_x, dst_y, dst_width, dst_height, false);
if (set_taskbar_decoration_) {
// Drawing the taskbar decoration uses lanczos resizing so we really
// want to do it only once.
DrawTaskBarDecoration(browser_, &icon);
set_taskbar_decoration_ = false;
}
}
bool AvatarMenuButton::HitTest(const gfx::Point& point) const {
if (!has_menu_)
return false;
return views::MenuButton::HitTest(point);
}
// If the icon changes, we need to set the taskbar decoration again.
void AvatarMenuButton::SetIcon(const SkBitmap& icon) {
views::MenuButton::SetIcon(icon);
set_taskbar_decoration_ = true;
}
// views::ViewMenuDelegate implementation
void AvatarMenuButton::RunMenu(views::View* source, const gfx::Point& pt) {
ShowAvatarBubble();
}
void AvatarMenuButton::ShowAvatarBubble() {
if (!has_menu_ || bubble_)
return;
BrowserView* browser_view = BrowserView::GetBrowserViewForBrowser(browser_);
gfx::Point origin;
views::View::ConvertPointToScreen(this, &origin);
gfx::Rect bounds(0, 0, width(), height());
bounds.set_origin(origin);
AvatarMenuBubbleView* bubble_view = new AvatarMenuBubbleView(browser_);
// Bubble::Show() takes ownership of the view.
bubble_ = Bubble::Show(browser_view->GetWidget(), bounds,
views::BubbleBorder::TOP_LEFT,
views::BubbleBorder::ALIGN_ARROW_TO_MID_ANCHOR, bubble_view, bubble_view);
bubble_->AddObserver(this);
ProfileMetrics::LogProfileOpenMethod(ProfileMetrics::ICON_AVATAR_BUBBLE);
}
void AvatarMenuButton::OnBubbleClosing() {
bubble_->RemoveObserver(this);
bubble_ = NULL;
}
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