1*91c99ff4SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*91c99ff4SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*91c99ff4SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*91c99ff4SAndrew Rist * distributed with this work for additional information 6*91c99ff4SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*91c99ff4SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*91c99ff4SAndrew Rist * "License"); you may not use this file except in compliance 9*91c99ff4SAndrew Rist * with the License. You may obtain a copy of the License at 10cdf0e10cSrcweir * 11*91c99ff4SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12cdf0e10cSrcweir * 13*91c99ff4SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*91c99ff4SAndrew Rist * software distributed under the License is distributed on an 15*91c99ff4SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*91c99ff4SAndrew Rist * KIND, either express or implied. See the License for the 17*91c99ff4SAndrew Rist * specific language governing permissions and limitations 18*91c99ff4SAndrew Rist * under the License. 19cdf0e10cSrcweir * 20*91c99ff4SAndrew Rist *************************************************************/ 21*91c99ff4SAndrew Rist 22*91c99ff4SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir #ifndef _VCLCANVAS_BACKBUFFER_HXX_ 25cdf0e10cSrcweir #define _VCLCANVAS_BACKBUFFER_HXX_ 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <vcl/virdev.hxx> 28cdf0e10cSrcweir 29cdf0e10cSrcweir #include <canvas/vclwrapper.hxx> 30cdf0e10cSrcweir #include "outdevprovider.hxx" 31cdf0e10cSrcweir 32cdf0e10cSrcweir #include <boost/shared_ptr.hpp> 33cdf0e10cSrcweir 34cdf0e10cSrcweir 35cdf0e10cSrcweir namespace vclcanvas 36cdf0e10cSrcweir { 37cdf0e10cSrcweir /// Background buffer abstraction 38cdf0e10cSrcweir class BackBuffer : public OutDevProvider 39cdf0e10cSrcweir { 40cdf0e10cSrcweir public: 41cdf0e10cSrcweir /** Create a backbuffer for given reference device 42cdf0e10cSrcweir 43cdf0e10cSrcweir @param bMonochromeBuffer 44cdf0e10cSrcweir When false, default depth of reference device is 45cdf0e10cSrcweir chosen. When true, the buffer will be monochrome, i.e. one 46cdf0e10cSrcweir bit deep. 47cdf0e10cSrcweir */ 48cdf0e10cSrcweir BackBuffer( const OutputDevice& rRefDevice, 49cdf0e10cSrcweir bool bMonochromeBuffer=false ); 50cdf0e10cSrcweir 51cdf0e10cSrcweir virtual OutputDevice& getOutDev(); 52cdf0e10cSrcweir virtual const OutputDevice& getOutDev() const; 53cdf0e10cSrcweir 54cdf0e10cSrcweir void setSize( const ::Size& rNewSize ); 55cdf0e10cSrcweir 56cdf0e10cSrcweir private: 57cdf0e10cSrcweir ::canvas::vcltools::VCLObject<VirtualDevice> maVDev; 58cdf0e10cSrcweir }; 59cdf0e10cSrcweir 60cdf0e10cSrcweir typedef ::boost::shared_ptr< BackBuffer > BackBufferSharedPtr; 61cdf0e10cSrcweir } 62cdf0e10cSrcweir 63cdf0e10cSrcweir #endif /* #ifndef _VCLCANVAS_BACKBUFFER_HXX_ */ 64