src/servers/app/OffscreenWindow.cpp

   1 /*
   2  * Copyright 2005-2008, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT license.
   4  *
   5  * Author:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8
   9
  10 #include "OffscreenWindow.h"
  11
  12 #include <new>
  13 #include <stdio.h>
  14
  15 #include <Debug.h>
  16
  17 #include <WindowPrivate.h>
  18
  19 #include "BitmapHWInterface.h"
  20 #include "DrawingEngine.h"
  21 #include "ServerBitmap.h"
  22
  23 using std::nothrow;
  24
  25
  26 OffscreenWindow::OffscreenWindow(ServerBitmap* bitmap,
  27                 const char* name, ::ServerWindow* window)
  28         : Window(bitmap->Bounds(), name,
  29                         B_NO_BORDER_WINDOW_LOOK, kOffscreenWindowFeel,
  30                         0, 0, window, new (nothrow) DrawingEngine()),
  31         fBitmap(bitmap),
  32         fHWInterface(new (nothrow) BitmapHWInterface(fBitmap))
  33 {
  34         if (!fHWInterface || !GetDrawingEngine())
  35                 return;
  36
  37         fHWInterface->Initialize();
  38         GetDrawingEngine()->SetHWInterface(fHWInterface);
  39
  40         fVisibleRegion.Set(fFrame);
  41         fVisibleContentRegion.Set(fFrame);
  42         fVisibleContentRegionValid = true;
  43         fContentRegion.Set(fFrame);
  44         fContentRegionValid = true;
  45 }
  46
  47
  48 OffscreenWindow::~OffscreenWindow()
  49 {
  50         if (GetDrawingEngine())
  51                 GetDrawingEngine()->SetHWInterface(NULL);
  52
  53         if (fHWInterface) {
  54                 fHWInterface->LockExclusiveAccess();
  55                 fHWInterface->Shutdown();
  56                 fHWInterface->UnlockExclusiveAccess();
  57                 delete fHWInterface;
  58         }
  59 }
  60