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      1 // Copyright (c) 2006-2008 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_H_
      6 #define CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_H_
      7 #pragma once
      8 
      9 #include "base/compiler_specific.h"
     10 #include "ui/gfx/native_widget_types.h"
     11 
     12 namespace gfx {
     13 class Canvas;
     14 class Rect;
     15 }
     16 ///////////////////////////////////////////////////////////////////////////////
     17 // NativeViewPhotobooth
     18 //
     19 //  An object that a NativeView "steps into" to have its picture taken. This is
     20 //  used to generate a full size screen shot of the contents of a NativeView
     21 //  including any child windows.
     22 //
     23 //  Implementation note: This causes the NativeView to be re-parented to a
     24 //  mostly off-screen layered window.
     25 //
     26 class NativeViewPhotobooth {
     27  public:
     28   // Creates the photo booth. Constructs a nearly off-screen window, parents
     29   // the view, then shows it. The caller is responsible for destroying this
     30   // photo-booth, since the photo-booth will detach it before it is destroyed.
     31   static NativeViewPhotobooth* Create(gfx::NativeView initial_view);
     32 
     33   // Destroys the photo booth window.
     34   virtual ~NativeViewPhotobooth() {}
     35 
     36   // Replaces the view in the photo booth with the specified one.
     37   virtual void Replace(gfx::NativeView new_view) = 0;
     38 
     39   // Paints the current display image of the window into |canvas|, clipped to
     40   // |target_bounds|.
     41   virtual void PaintScreenshotIntoCanvas(gfx::Canvas* canvas,
     42                                          const gfx::Rect& target_bounds) = 0;
     43 };
     44 
     45 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_H_
     46