1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir #ifndef _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX 29*cdf0e10cSrcweir #define _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir #include <cppcanvas/canvas.hxx> 32*cdf0e10cSrcweir #include <cppcanvas/renderer.hxx> 33*cdf0e10cSrcweir #include <action.hxx> 34*cdf0e10cSrcweir 35*cdf0e10cSrcweir #include <memory> // auto_ptr 36*cdf0e10cSrcweir 37*cdf0e10cSrcweir namespace basegfx { 38*cdf0e10cSrcweir class B2DPoint; 39*cdf0e10cSrcweir class B2DVector; 40*cdf0e10cSrcweir } 41*cdf0e10cSrcweir 42*cdf0e10cSrcweir class GDIMetaFile; 43*cdf0e10cSrcweir class Gradient; 44*cdf0e10cSrcweir 45*cdf0e10cSrcweir 46*cdf0e10cSrcweir /* Definition of internal::TransparencyGroupActionFactory class */ 47*cdf0e10cSrcweir 48*cdf0e10cSrcweir namespace cppcanvas 49*cdf0e10cSrcweir { 50*cdf0e10cSrcweir namespace internal 51*cdf0e10cSrcweir { 52*cdf0e10cSrcweir struct OutDevState; 53*cdf0e10cSrcweir 54*cdf0e10cSrcweir typedef ::std::auto_ptr< GDIMetaFile > MtfAutoPtr; 55*cdf0e10cSrcweir typedef ::std::auto_ptr< Gradient > GradientAutoPtr; 56*cdf0e10cSrcweir 57*cdf0e10cSrcweir /** Transparency group action. 58*cdf0e10cSrcweir 59*cdf0e10cSrcweir This action groups a bunch of other actions, to be 60*cdf0e10cSrcweir rendered with the given transparency setting against the 61*cdf0e10cSrcweir background. 62*cdf0e10cSrcweir 63*cdf0e10cSrcweir Creates encapsulated converters between GDIMetaFile and 64*cdf0e10cSrcweir XCanvas. The Canvas argument is deliberately placed at the 65*cdf0e10cSrcweir constructor, to force reconstruction of this object for a 66*cdf0e10cSrcweir new canvas. This considerably eases internal state 67*cdf0e10cSrcweir handling, since a lot of the internal state (e.g. fonts, 68*cdf0e10cSrcweir text layout) is Canvas-dependent. 69*cdf0e10cSrcweir */ 70*cdf0e10cSrcweir class TransparencyGroupActionFactory 71*cdf0e10cSrcweir { 72*cdf0e10cSrcweir public: 73*cdf0e10cSrcweir /** Create new transparency group action. 74*cdf0e10cSrcweir 75*cdf0e10cSrcweir @param rGroupMtf 76*cdf0e10cSrcweir Metafile that groups all actions to be rendered 77*cdf0e10cSrcweir transparent 78*cdf0e10cSrcweir 79*cdf0e10cSrcweir @param rParms 80*cdf0e10cSrcweir Render parameters 81*cdf0e10cSrcweir 82*cdf0e10cSrcweir @param rDstPoint 83*cdf0e10cSrcweir Left, top edge of destination, in current state 84*cdf0e10cSrcweir coordinate system 85*cdf0e10cSrcweir 86*cdf0e10cSrcweir @param rDstSize 87*cdf0e10cSrcweir Size of the transparency group object, in current 88*cdf0e10cSrcweir state coordinate system. 89*cdf0e10cSrcweir 90*cdf0e10cSrcweir @param nAlpha 91*cdf0e10cSrcweir Alpha value, must be in the range [0,1] 92*cdf0e10cSrcweir */ 93*cdf0e10cSrcweir static ActionSharedPtr createTransparencyGroupAction( MtfAutoPtr& rGroupMtf, 94*cdf0e10cSrcweir const Renderer::Parameters& rParms, 95*cdf0e10cSrcweir const ::basegfx::B2DPoint& rDstPoint, 96*cdf0e10cSrcweir const ::basegfx::B2DVector& rDstSize, 97*cdf0e10cSrcweir double nAlpha, 98*cdf0e10cSrcweir const CanvasSharedPtr& rCanvas, 99*cdf0e10cSrcweir const OutDevState& rState ); 100*cdf0e10cSrcweir 101*cdf0e10cSrcweir /** Create new transparency group action. 102*cdf0e10cSrcweir 103*cdf0e10cSrcweir @param rGroupMtf 104*cdf0e10cSrcweir Metafile that groups all actions to be rendered 105*cdf0e10cSrcweir transparent. 106*cdf0e10cSrcweir 107*cdf0e10cSrcweir @param rAlphaGradient 108*cdf0e10cSrcweir VCL gradient, to be rendered into the action's alpha 109*cdf0e10cSrcweir channel. 110*cdf0e10cSrcweir 111*cdf0e10cSrcweir @param rParms 112*cdf0e10cSrcweir Render parameters 113*cdf0e10cSrcweir 114*cdf0e10cSrcweir @param rDstPoint 115*cdf0e10cSrcweir Left, top edge of destination, in current state 116*cdf0e10cSrcweir coordinate system 117*cdf0e10cSrcweir 118*cdf0e10cSrcweir @param rDstSize 119*cdf0e10cSrcweir Size of the transparency group object, in current 120*cdf0e10cSrcweir state coordinate system. 121*cdf0e10cSrcweir */ 122*cdf0e10cSrcweir static ActionSharedPtr createTransparencyGroupAction( MtfAutoPtr& rGroupMtf, 123*cdf0e10cSrcweir GradientAutoPtr& rAlphaGradient, 124*cdf0e10cSrcweir const Renderer::Parameters& rParms, 125*cdf0e10cSrcweir const ::basegfx::B2DPoint& rDstPoint, 126*cdf0e10cSrcweir const ::basegfx::B2DVector& rDstSize, 127*cdf0e10cSrcweir const CanvasSharedPtr& rCanvas, 128*cdf0e10cSrcweir const OutDevState& rState ); 129*cdf0e10cSrcweir 130*cdf0e10cSrcweir private: 131*cdf0e10cSrcweir // static factory, disable big four 132*cdf0e10cSrcweir TransparencyGroupActionFactory(); 133*cdf0e10cSrcweir ~TransparencyGroupActionFactory(); 134*cdf0e10cSrcweir TransparencyGroupActionFactory(const TransparencyGroupActionFactory&); 135*cdf0e10cSrcweir TransparencyGroupActionFactory& operator=( const TransparencyGroupActionFactory& ); 136*cdf0e10cSrcweir }; 137*cdf0e10cSrcweir } 138*cdf0e10cSrcweir } 139*cdf0e10cSrcweir 140*cdf0e10cSrcweir #endif /*_CPPCANVAS_TRANSPARENCYGROUPACTION_HXX */ 141