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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.
#ifndef CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_WIN_H_
#define CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_WIN_H_
#pragma once
#include "chrome/browser/ui/views/tabs/native_view_photobooth.h"
namespace views {
class WidgetWin;
}
///////////////////////////////////////////////////////////////////////////////
// HWNDPhotobooth
//
// An object that a HWND "steps into" to have its picture taken. This is used
// to generate a full size screen shot of the contents of a HWND including
// any child windows.
//
// Implementation note: This causes the HWND to be re-parented to a mostly
// off-screen layered window.
//
class NativeViewPhotoboothWin : public NativeViewPhotobooth {
public:
// Creates the photo booth. Constructs a nearly off-screen window, parents
// the HWND, then shows it. The caller is responsible for destroying this
// window, since the photo-booth will detach it before it is destroyed.
// |canvas| is a canvas to paint the contents into, and dest_bounds is the
// target area in |canvas| to which painted contents will be clipped.
explicit NativeViewPhotoboothWin(gfx::NativeView initial_view);
// Destroys the photo booth window.
virtual ~NativeViewPhotoboothWin();
// Replaces the view in the photo booth with the specified one.
virtual void Replace(gfx::NativeView new_view) OVERRIDE;
// Paints the current display image of the window into |canvas|, clipped to
// |target_bounds|.
virtual void PaintScreenshotIntoCanvas(
gfx::Canvas* canvas,
const gfx::Rect& target_bounds) OVERRIDE;
private:
// Creates a mostly off-screen window to contain the HWND to be captured.
void CreateCaptureWindow(HWND initial_hwnd);
// The nearly off-screen photo-booth layered window used to hold the HWND.
views::WidgetWin* capture_window_;
// The current HWND being captured.
HWND current_hwnd_;
DISALLOW_COPY_AND_ASSIGN(NativeViewPhotoboothWin);
};
#endif // CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_WIN_H_
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