1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef _CPPCANVAS_BITMAPCANVAS_HXX 25 #define _CPPCANVAS_BITMAPCANVAS_HXX 26 27 #include <sal/types.h> 28 #include <osl/diagnose.h> 29 30 #include <boost/shared_ptr.hpp> 31 #include <basegfx/vector/b2isize.hxx> 32 #include <cppcanvas/canvas.hxx> 33 34 35 /* Definition of BitmapCanvas */ 36 37 namespace cppcanvas 38 { 39 class BitmapCanvas; 40 41 // forward declaration, since cloneBitmapCanvas() also references BitmapCanvas 42 typedef ::boost::shared_ptr< BitmapCanvas > BitmapCanvasSharedPtr; 43 44 /** BitmapCanvas interface 45 */ 46 class BitmapCanvas : public virtual Canvas 47 { 48 public: 49 virtual ::basegfx::B2ISize getSize() const = 0; 50 51 // shared_ptr does not allow for covariant return types cloneBitmapCanvas() const52 BitmapCanvasSharedPtr cloneBitmapCanvas() const 53 { 54 BitmapCanvasSharedPtr p( ::boost::dynamic_pointer_cast< BitmapCanvas >(this->clone()) ); 55 OSL_ENSURE(p.get(), "BitmapCanvas::cloneBitmapCanvas(): dynamic cast failed"); 56 return p; 57 } 58 }; 59 60 } 61 62 #endif /* _CPPCANVAS_BITMAPCANVAS_HXX */ 63