svx/inc/sdr/overlay/overlaymanagerbuffered.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  21 #define INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  22
  23 #include <svx/sdr/overlay/overlaymanager.hxx>
  24 #include <basegfx/range/b2irange.hxx>
  25 #include <vcl/virdev.hxx>
  26 #include <vcl/idle.hxx>
  27
  28
  29 namespace sdr::overlay
  30     {
  31         class OverlayManagerBuffered final : public OverlayManager
  32         {
  33             // The VirtualDevice for draw window content buffering, this
  34             // is the view content without overlay
  35             ScopedVclPtr<VirtualDevice>             mpBufferDevice;
  36
  37             // #i73602# The VirtualDevice for OverlayPaint buffering. This
  38             // is an extra device to avoid flickering of overlay paints
  39             ScopedVclPtr<VirtualDevice>             mpOutputBufferDevice;
  40
  41             // Idle for buffering
  42             Idle                                    maBufferIdle;
  43
  44             // Range for buffering (in pixel to be independent from mapMode)
  45             basegfx::B2IRange                       maBufferRememberedRangePixel;
  46
  47             // link for timer
  48             DECL_LINK(ImpBufferTimerHandler, Timer*, void);
  49
  50             // Internal methods for buffering
  51             void ImpPrepareBufferDevice();
  52             void ImpRestoreBackground() const ;
  53             void ImpRestoreBackground(const vcl::Region& rRegionPixel) const;
  54             void ImpSaveBackground(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice);
  55
  56             OverlayManagerBuffered(OutputDevice& rOutputDevice);
  57             virtual ~OverlayManagerBuffered() override;
  58
  59         public:
  60             static rtl::Reference<OverlayManager> create(OutputDevice& rOutputDevice);
  61
  62             // complete redraw
  63             virtual void completeRedraw(const vcl::Region& rRegion, OutputDevice* pPreRenderDevice = nullptr) const override;
  64
  65             // flush. Do buffered updates.
  66             virtual void flush() override;
  67
  68             // invalidate the given range at local OutputDevice
  69             virtual void invalidateRange(const basegfx::B2DRange& rRange) override;
  70         };
  71 } // end of namespace sdr::overlay
  72
  73
  74 #endif // INCLUDED_SVX_INC_SDR_OVERLAY_OVERLAYMANAGERBUFFERED_HXX
  75
  76 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */