chrome/browser/ui/views/tabs/native_view_photobooth.h

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