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 INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX 25 #define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX 26 27 #include <drawinglayer/drawinglayerdllapi.h> 28 #include <drawinglayer/primitive2d/baseprimitive2d.hxx> 29 #include <drawinglayer/attribute/fillgradientattribute.hxx> 30 #include <drawinglayer/texture/texture.hxx> 31 32 ////////////////////////////////////////////////////////////////////////////// 33 // predefines 34 35 namespace basegfx { class B2DPolygon; } 36 37 ////////////////////////////////////////////////////////////////////////////// 38 // FillGradientPrimitive2D class 39 40 namespace drawinglayer 41 { 42 namespace primitive2d 43 { 44 /** FillGradientPrimitive2D class 45 46 This class defines a gradient filling for a rectangular area. The 47 Range is defined by the Transformation, the gradient by the FillGradientAttribute. 48 49 The decomposition will deliver the decomposed gradient, e.g. for an ellipse 50 gradient the various ellipses in various color steps will be created. 51 52 I have added functionality to create both versions of filled decompositions: 53 Those who overlap and non-overlapping ones. The overlapping version is the 54 default one since it works with and without AntiAliasing. The non-overlapping 55 version is used in the MetafilePrimitive2D decomposition when the old XOR 56 paint was recorded. 57 */ 58 class DRAWINGLAYER_DLLPUBLIC FillGradientPrimitive2D : public BufferedDecompositionPrimitive2D 59 { 60 private: 61 /// the geometric definition 62 basegfx::B2DRange maObjectRange; 63 64 /// the gradient definition 65 attribute::FillGradientAttribute maFillGradient; 66 67 /// local helpers 68 void generateMatricesAndColors( 69 std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries, 70 basegfx::BColor& rOutmostColor) const; 71 Primitive2DSequence createOverlappingFill( 72 const std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries, 73 const basegfx::BColor& rOutmostColor, 74 const basegfx::B2DPolygon& rUnitPolygon) const; 75 Primitive2DSequence createNonOverlappingFill( 76 const std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries, 77 const basegfx::BColor& rOutmostColor, 78 const basegfx::B2DPolygon& rUnitPolygon) const; 79 80 protected: 81 /// local helper 82 Primitive2DSequence createFill(bool bOverlapping) const; 83 84 /// local decomposition. 85 virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const; 86 87 public: 88 /// constructor 89 FillGradientPrimitive2D( 90 const basegfx::B2DRange& rObjectRange, 91 const attribute::FillGradientAttribute& rFillGradient); 92 93 /// data read access 94 const basegfx::B2DRange& getObjectRange() const { return maObjectRange; } 95 const attribute::FillGradientAttribute& getFillGradient() const { return maFillGradient; } 96 97 /// compare operator 98 virtual bool operator==(const BasePrimitive2D& rPrimitive) const; 99 100 /// get range 101 virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const; 102 103 /// provide unique ID 104 DeclPrimitrive2DIDBlock() 105 }; 106 } // end of namespace primitive2d 107 } // end of namespace drawinglayer 108 109 ////////////////////////////////////////////////////////////////////////////// 110 111 #endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX 112 113 ////////////////////////////////////////////////////////////////////////////// 114 // eof 115