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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_drawinglayer.hxx"
26 
27 #include <drawinglayer/primitive2d/fillgradientprimitive2d.hxx>
28 #include <basegfx/polygon/b2dpolygon.hxx>
29 #include <basegfx/polygon/b2dpolygontools.hxx>
30 #include <drawinglayer/texture/texture.hxx>
31 #include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
32 #include <basegfx/tools/canvastools.hxx>
33 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
34 
35 //////////////////////////////////////////////////////////////////////////////
36 
37 using namespace com::sun::star;
38 
39 //////////////////////////////////////////////////////////////////////////////
40 
41 namespace drawinglayer
42 {
43 	namespace primitive2d
44 	{
45         void FillGradientPrimitive2D::generateMatricesAndColors(
46             std::vector< basegfx::B2DHomMatrix >& rMatrices,
47             std::vector< basegfx::BColor >& rColors) const
48         {
49             rMatrices.clear();
50             rColors.clear();
51 
52 			// make sure steps is not too high/low
53 			const basegfx::BColor aStart(getFillGradient().getStartColor());
54 			const basegfx::BColor aEnd(getFillGradient().getEndColor());
55 			const sal_uInt32 nMaxSteps(sal_uInt32((aStart.getMaximumDistance(aEnd) * 127.5) + 0.5));
56 			sal_uInt32 nSteps(getFillGradient().getSteps());
57 
58 			if(nSteps == 0)
59 			{
60 				nSteps = nMaxSteps;
61 			}
62 
63 			if(nSteps < 2)
64 			{
65 				nSteps = 2;
66 			}
67 
68 			if(nSteps > nMaxSteps)
69 			{
70 				nSteps = nMaxSteps;
71 			}
72 
73 			switch(getFillGradient().getStyle())
74 			{
75 				case attribute::GRADIENTSTYLE_LINEAR:
76 				{
77 					texture::GeoTexSvxGradientLinear aGradient(getObjectRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getAngle());
78 					aGradient.appendTransformations(rMatrices);
79 					aGradient.appendColors(rColors);
80 					break;
81 				}
82 				case attribute::GRADIENTSTYLE_AXIAL:
83 				{
84 					texture::GeoTexSvxGradientAxial aGradient(getObjectRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getAngle());
85 					aGradient.appendTransformations(rMatrices);
86 					aGradient.appendColors(rColors);
87 					break;
88 				}
89 				case attribute::GRADIENTSTYLE_RADIAL:
90 				{
91 					texture::GeoTexSvxGradientRadial aGradient(getObjectRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY());
92 					aGradient.appendTransformations(rMatrices);
93 					aGradient.appendColors(rColors);
94 					break;
95 				}
96 				case attribute::GRADIENTSTYLE_ELLIPTICAL:
97 				{
98 					texture::GeoTexSvxGradientElliptical aGradient(getObjectRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY(), getFillGradient().getAngle());
99 					aGradient.appendTransformations(rMatrices);
100 					aGradient.appendColors(rColors);
101 					break;
102 				}
103 				case attribute::GRADIENTSTYLE_SQUARE:
104 				{
105 					texture::GeoTexSvxGradientSquare aGradient(getObjectRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY(), getFillGradient().getAngle());
106 					aGradient.appendTransformations(rMatrices);
107 					aGradient.appendColors(rColors);
108 					break;
109 				}
110 				case attribute::GRADIENTSTYLE_RECT:
111 				{
112 					texture::GeoTexSvxGradientRect aGradient(getObjectRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY(), getFillGradient().getAngle());
113 					aGradient.appendTransformations(rMatrices);
114 					aGradient.appendColors(rColors);
115 					break;
116 				}
117 			}
118         }
119 
120         Primitive2DSequence FillGradientPrimitive2D::createOverlappingFill(
121             const std::vector< basegfx::B2DHomMatrix >& rMatrices,
122             const std::vector< basegfx::BColor >& rColors,
123             const basegfx::B2DPolygon& rUnitPolygon) const
124         {
125 			// prepare return value
126 			Primitive2DSequence aRetval(rColors.size() ? rMatrices.size() + 1 : rMatrices.size());
127 
128             // create solid fill with start color
129 		    if(rColors.size())
130 		    {
131 			    // create primitive
132 			    const Primitive2DReference xRef(
133                     new PolyPolygonColorPrimitive2D(
134                         basegfx::B2DPolyPolygon(basegfx::tools::createPolygonFromRect(getObjectRange())),
135                         rColors[0]));
136 			    aRetval[0] = xRef;
137 		    }
138 
139 		    // create solid fill steps
140 		    for(sal_uInt32 a(0); a < rMatrices.size(); a++)
141 		    {
142 			    // create part polygon
143 			    basegfx::B2DPolygon aNewPoly(rUnitPolygon);
144 			    aNewPoly.transform(rMatrices[a]);
145 
146 			    // create solid fill
147 			    const Primitive2DReference xRef(
148                     new PolyPolygonColorPrimitive2D(
149                         basegfx::B2DPolyPolygon(aNewPoly),
150                         rColors[a + 1]));
151 			    aRetval[a + 1] = xRef;
152 		    }
153 
154             return aRetval;
155         }
156 
157         Primitive2DSequence FillGradientPrimitive2D::createNonOverlappingFill(
158             const std::vector< basegfx::B2DHomMatrix >& rMatrices,
159             const std::vector< basegfx::BColor >& rColors,
160             const basegfx::B2DPolygon& rUnitPolygon) const
161         {
162 			// prepare return value
163 			Primitive2DSequence aRetval;
164             const sal_uInt32 nMatricesSize(rMatrices.size());
165 
166             if(nMatricesSize)
167             {
168 			    basegfx::B2DPolygon aOuterPoly(rUnitPolygon);
169 			    aOuterPoly.transform(rMatrices[0]);
170                 basegfx::B2DPolyPolygon aCombinedPolyPoly(aOuterPoly);
171     			const sal_uInt32 nEntryCount(rColors.size() ? rMatrices.size() + 1 : rMatrices.size());
172                 sal_uInt32 nIndex(0);
173 
174                 aRetval.realloc(nEntryCount);
175 
176 		        if(rColors.size())
177 		        {
178                     basegfx::B2DRange aOuterPolyRange(aOuterPoly.getB2DRange());
179                     aOuterPolyRange.expand(getObjectRange());
180                     aCombinedPolyPoly.append(basegfx::tools::createPolygonFromRect(aOuterPolyRange));
181                     aRetval[nIndex++] = Primitive2DReference(new PolyPolygonColorPrimitive2D(aCombinedPolyPoly, rColors[0]));
182                     aCombinedPolyPoly = basegfx::B2DPolyPolygon(aOuterPoly);
183                 }
184 
185                 for(sal_uInt32 a(1); a < nMatricesSize - 1; a++)
186 		        {
187                     basegfx::B2DPolygon aInnerPoly(rUnitPolygon);
188 			        aInnerPoly.transform(rMatrices[a]);
189                     aCombinedPolyPoly.append(aInnerPoly);
190 			        aRetval[nIndex++] = Primitive2DReference(new PolyPolygonColorPrimitive2D(aCombinedPolyPoly, rColors[a]));
191                     aCombinedPolyPoly = basegfx::B2DPolyPolygon(aInnerPoly);
192                 }
193 
194 		        if(rColors.size())
195 		        {
196                     aRetval[nIndex] = Primitive2DReference(new PolyPolygonColorPrimitive2D(
197                         aCombinedPolyPoly, rColors[rColors.size() - 1]));
198                 }
199             }
200 
201             return aRetval;
202         }
203 
204 		Primitive2DSequence FillGradientPrimitive2D::createFill(bool bOverlapping) const
205 		{
206             // prepare shape of the Unit Polygon
207 			basegfx::B2DPolygon aUnitPolygon;
208 
209 			if(attribute::GRADIENTSTYLE_RADIAL == getFillGradient().getStyle()
210                 || attribute::GRADIENTSTYLE_ELLIPTICAL == getFillGradient().getStyle())
211 			{
212 				aUnitPolygon = basegfx::tools::createPolygonFromCircle(
213                     basegfx::B2DPoint(0,0), 1);
214 			}
215 			else if(attribute::GRADIENTSTYLE_LINEAR == maFillGradient.getStyle())
216 			{
217 				aUnitPolygon = basegfx::tools::createPolygonFromRect(basegfx::B2DRange(0, 0, 1, 1));
218 			}
219 			else
220 			{
221 				aUnitPolygon = basegfx::tools::createPolygonFromRect(basegfx::B2DRange(-1, -1, 1, 1));
222 			}
223 
224             // get the transform matrices and colors (where colors
225             // will have one more entry that matrices)
226 			std::vector< basegfx::B2DHomMatrix > aMatrices;
227 			std::vector< basegfx::BColor > aColors;
228             generateMatricesAndColors(aMatrices, aColors);
229 
230             if(bOverlapping)
231             {
232                 return createOverlappingFill(aMatrices, aColors, aUnitPolygon);
233             }
234             else
235             {
236                 return createNonOverlappingFill(aMatrices, aColors, aUnitPolygon);
237             }
238         }
239 
240 		Primitive2DSequence FillGradientPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
241 		{
242             // default creates overlapping fill which works with AntiAliasing and without.
243             // The non-overlapping version does not create single filled polygons, but
244             // PolyPolygons where each one describes a 'ring' for the gradient such
245             // that the rings will not overlap. This is useful fir the old XOR-paint
246             // 'trick' of VCL which is recorded in Metafiles; so this version may be
247             // used from the MetafilePrimitive2D in it's decomposition.
248 
249             if(!getFillGradient().isDefault())
250             {
251         		return createFill(true);
252             }
253             else
254             {
255                 return Primitive2DSequence();
256             }
257 		}
258 
259 		FillGradientPrimitive2D::FillGradientPrimitive2D(
260 			const basegfx::B2DRange& rObjectRange,
261 			const attribute::FillGradientAttribute& rFillGradient)
262 		:	BufferedDecompositionPrimitive2D(),
263 			maObjectRange(rObjectRange),
264 			maFillGradient(rFillGradient)
265 		{
266 		}
267 
268 		bool FillGradientPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
269 		{
270 			if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
271 			{
272 				const FillGradientPrimitive2D& rCompare = (FillGradientPrimitive2D&)rPrimitive;
273 
274 				return (getObjectRange() == rCompare.getObjectRange()
275 					&& getFillGradient() == rCompare.getFillGradient());
276 			}
277 
278 			return false;
279 		}
280 
281 		basegfx::B2DRange FillGradientPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
282 		{
283 			// return ObjectRange
284 			return getObjectRange();
285 		}
286 
287 		// provide unique ID
288 		ImplPrimitrive2DIDBlock(FillGradientPrimitive2D, PRIMITIVE2D_ID_FILLGRADIENTPRIMITIVE2D)
289 
290 	} // end of namespace primitive2d
291 } // end of namespace drawinglayer
292 
293 //////////////////////////////////////////////////////////////////////////////
294 // eof
295