1 // Copyright (c) 2011 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 #ifndef CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_WIN_H_ 6 #define CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_WIN_H_ 7 #pragma once 8 9 #include "chrome/browser/ui/views/tabs/native_view_photobooth.h" 10 11 namespace views { 12 class Widget; 13 } 14 15 /////////////////////////////////////////////////////////////////////////////// 16 // HWNDPhotobooth 17 // 18 // An object that a HWND "steps into" to have its picture taken. This is used 19 // to generate a full size screen shot of the contents of a HWND including 20 // any child windows. 21 // 22 // Implementation note: This causes the HWND to be re-parented to a mostly 23 // off-screen layered window. 24 // 25 class NativeViewPhotoboothWin : public NativeViewPhotobooth { 26 public: 27 // Creates the photo booth. Constructs a nearly off-screen window, parents 28 // the HWND, then shows it. The caller is responsible for destroying this 29 // window, since the photo-booth will detach it before it is destroyed. 30 // |canvas| is a canvas to paint the contents into, and dest_bounds is the 31 // target area in |canvas| to which painted contents will be clipped. 32 explicit NativeViewPhotoboothWin(gfx::NativeView initial_view); 33 34 // Destroys the photo booth window. 35 virtual ~NativeViewPhotoboothWin(); 36 37 // Replaces the view in the photo booth with the specified one. 38 virtual void Replace(gfx::NativeView new_view) OVERRIDE; 39 40 // Paints the current display image of the window into |canvas|, clipped to 41 // |target_bounds|. 42 virtual void PaintScreenshotIntoCanvas( 43 gfx::Canvas* canvas, 44 const gfx::Rect& target_bounds) OVERRIDE; 45 46 private: 47 // Creates a mostly off-screen window to contain the HWND to be captured. 48 void CreateCaptureWindow(HWND initial_hwnd); 49 50 // The nearly off-screen photo-booth layered window used to hold the HWND. 51 views::Widget* capture_window_; 52 53 // The current HWND being captured. 54 HWND current_hwnd_; 55 56 DISALLOW_COPY_AND_ASSIGN(NativeViewPhotoboothWin); 57 }; 58 59 #endif // CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_WIN_H_ 60
