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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <drawinglayer/geometry/viewinformation2d.hxx>
21 : #include <drawinglayer/primitive2d/borderlineprimitive2d.hxx>
22 : #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
23 : #include <basegfx/polygon/b2dpolygon.hxx>
24 : #include <basegfx/polygon/b2dpolygonclipper.hxx>
25 : #include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
26 : #include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
27 : #include <svtools/borderhelper.hxx>
28 : #include <numeric>
29 : #include <algorithm>
30 :
31 : namespace drawinglayer {
32 :
33 : namespace {
34 :
35 0 : void moveLine(basegfx::B2DPolygon& rPoly, double fGap, const basegfx::B2DVector& rVector)
36 : {
37 0 : if (basegfx::fTools::equalZero(rVector.getX()))
38 : {
39 0 : basegfx::B2DHomMatrix aMat(1, 0, fGap, 0, 1, 0);
40 0 : rPoly.transform(aMat);
41 : }
42 0 : else if (basegfx::fTools::equalZero(rVector.getY()))
43 : {
44 0 : basegfx::B2DHomMatrix aMat(1, 0, 0, 0, 1, fGap);
45 0 : rPoly.transform(aMat);
46 : }
47 0 : }
48 :
49 0 : primitive2d::Primitive2DReference makeHairLinePrimitive(
50 : const basegfx::B2DPoint& rStart, const basegfx::B2DPoint& rEnd, const basegfx::B2DVector& rVector,
51 : const basegfx::BColor& rColor, double fGap)
52 : {
53 0 : basegfx::B2DPolygon aPolygon;
54 0 : aPolygon.append(rStart);
55 0 : aPolygon.append(rEnd);
56 0 : moveLine(aPolygon, fGap, rVector);
57 :
58 0 : return primitive2d::Primitive2DReference(new primitive2d::PolygonHairlinePrimitive2D(aPolygon, rColor));
59 : }
60 :
61 0 : primitive2d::Primitive2DReference makeSolidLinePrimitive(
62 : const basegfx::B2DPolyPolygon& rClipRegion, const basegfx::B2DPoint& rStart, const basegfx::B2DPoint& rEnd,
63 : const basegfx::B2DVector& rVector, const basegfx::BColor& rColor, double fLineWidth, double fGap)
64 : {
65 0 : const basegfx::B2DVector aPerpendicular = basegfx::getPerpendicular(rVector);
66 0 : const basegfx::B2DVector aLineWidthOffset = ((fLineWidth + 1.0) * 0.5) * aPerpendicular;
67 :
68 0 : basegfx::B2DPolygon aPolygon;
69 0 : aPolygon.append(rStart + aLineWidthOffset);
70 0 : aPolygon.append(rEnd + aLineWidthOffset);
71 0 : aPolygon.append(rEnd - aLineWidthOffset);
72 0 : aPolygon.append(rStart - aLineWidthOffset);
73 0 : aPolygon.setClosed(true);
74 :
75 0 : moveLine(aPolygon, fGap, rVector);
76 :
77 : basegfx::B2DPolyPolygon aClipped =
78 0 : basegfx::tools::clipPolygonOnPolyPolygon(aPolygon, rClipRegion, true, false);
79 :
80 0 : if (aClipped.count())
81 0 : aPolygon = aClipped.getB2DPolygon(0);
82 :
83 : return primitive2d::Primitive2DReference(
84 0 : new primitive2d::PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aPolygon), rColor));
85 : }
86 :
87 : }
88 :
89 : // fdo#49438: heuristic pseudo hack
90 0 : static bool lcl_UseHairline(double const fW,
91 : basegfx::B2DPoint const& rStart, basegfx::B2DPoint const& rEnd,
92 : geometry::ViewInformation2D const& rViewInformation)
93 : {
94 0 : basegfx::B2DTuple scale;
95 0 : basegfx::B2DTuple translation;
96 : double fRotation;
97 : double fShear;
98 0 : rViewInformation.getObjectToViewTransformation().decompose(
99 0 : scale, translation, fRotation, fShear);
100 : double const fScale(
101 0 : (rEnd.getX() - rStart.getX() > rEnd.getY() - rStart.getY())
102 0 : ? scale.getY() : scale.getX());
103 0 : return (fW * fScale < 0.51);
104 : }
105 :
106 0 : static double lcl_GetCorrectedWidth(double const fW,
107 : basegfx::B2DPoint const& rStart, basegfx::B2DPoint const& rEnd,
108 : geometry::ViewInformation2D const& rViewInformation)
109 : {
110 0 : return (lcl_UseHairline(fW, rStart, rEnd, rViewInformation)) ? 0.0 : fW;
111 : }
112 :
113 : namespace primitive2d
114 : {
115 0 : double BorderLinePrimitive2D::getWidth(
116 : geometry::ViewInformation2D const& rViewInformation) const
117 : {
118 0 : return lcl_GetCorrectedWidth(mfLeftWidth, getStart(), getEnd(),
119 0 : rViewInformation)
120 0 : + lcl_GetCorrectedWidth(mfDistance, getStart(), getEnd(),
121 0 : rViewInformation)
122 0 : + lcl_GetCorrectedWidth(mfRightWidth, getStart(), getEnd(),
123 0 : rViewInformation);
124 : }
125 :
126 0 : basegfx::B2DPolyPolygon BorderLinePrimitive2D::getClipPolygon(
127 : geometry::ViewInformation2D const& rViewInformation) const
128 : {
129 0 : basegfx::B2DPolygon clipPolygon;
130 :
131 : // Get the vectors
132 0 : basegfx::B2DVector aVector( getEnd() - getStart() );
133 0 : aVector.normalize();
134 0 : const basegfx::B2DVector aPerpendicular(basegfx::getPerpendicular(aVector));
135 :
136 : // Get the points
137 0 : const double fWidth(getWidth(rViewInformation));
138 : const basegfx::B2DVector aLeftOff(
139 0 : aPerpendicular * (-0.5 * std::max(fWidth, 1.0)));
140 : const basegfx::B2DVector aRightOff(
141 0 : aPerpendicular * (0.5 * std::max(fWidth, 1.0)));
142 :
143 0 : const basegfx::B2DVector aSLVector( aLeftOff - ( getExtendLeftStart() * aVector ) );
144 0 : clipPolygon.append( basegfx::B2DPoint( getStart() + aSLVector * 2.0 ) );
145 :
146 0 : clipPolygon.append( getStart( ) );
147 :
148 0 : const basegfx::B2DVector aSRVector( aRightOff - ( getExtendRightStart() * aVector ) );
149 0 : clipPolygon.append( basegfx::B2DPoint( getStart() + aSRVector * 2.0 ) );
150 :
151 0 : const basegfx::B2DVector aERVector( aRightOff + ( getExtendRightEnd() * aVector ) );
152 0 : clipPolygon.append( basegfx::B2DPoint( getEnd() + aERVector * 2.0 ) );
153 :
154 0 : clipPolygon.append( getEnd( ) );
155 :
156 0 : const basegfx::B2DVector aELVector( aLeftOff + ( getExtendLeftEnd() * aVector ) );
157 0 : clipPolygon.append( basegfx::B2DPoint( getEnd() + aELVector * 2.0 ) );
158 :
159 0 : clipPolygon.setClosed( true );
160 :
161 0 : return basegfx::B2DPolyPolygon( clipPolygon );
162 : }
163 :
164 0 : Primitive2DSequence BorderLinePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
165 : {
166 0 : Primitive2DSequence xRetval;
167 :
168 0 : if(!getStart().equal(getEnd()) && ( isInsideUsed() || isOutsideUsed() ) )
169 : {
170 : // get data and vectors
171 0 : basegfx::B2DVector aVector(getEnd() - getStart());
172 0 : aVector.normalize();
173 0 : const basegfx::B2DVector aPerpendicular(basegfx::getPerpendicular(aVector));
174 :
175 : const basegfx::B2DPolyPolygon& aClipRegion =
176 0 : getClipPolygon(rViewInformation);
177 :
178 0 : if(isOutsideUsed() && isInsideUsed())
179 : {
180 0 : const double fExt = getWidth(rViewInformation); // Extend a lot: it'll be clipped later.
181 0 : const basegfx::B2DPoint aTmpStart(getStart() - (fExt * aVector));
182 0 : const basegfx::B2DPoint aTmpEnd(getEnd() + (fExt * aVector));
183 :
184 0 : xRetval.realloc(2);
185 :
186 0 : double fLeftWidth = getLeftWidth();
187 0 : bool bLeftHairline = lcl_UseHairline(fLeftWidth, getStart(), getEnd(), rViewInformation);
188 0 : if (bLeftHairline)
189 0 : fLeftWidth = 0.0;
190 :
191 0 : double fRightWidth = getRightWidth();
192 0 : bool bRightHairline = lcl_UseHairline(fRightWidth, getStart(), getEnd(), rViewInformation);
193 0 : if (bRightHairline)
194 0 : fRightWidth = 0.0;
195 :
196 : // "inside" line
197 :
198 0 : if (bLeftHairline)
199 0 : xRetval[0] = makeHairLinePrimitive(
200 0 : getStart(), getEnd(), aVector, getRGBColorLeft(), 0.0);
201 : else
202 0 : xRetval[0] = makeSolidLinePrimitive(
203 0 : aClipRegion, aTmpStart, aTmpEnd, aVector, getRGBColorLeft(), fLeftWidth, -fLeftWidth/2.0);
204 :
205 : // "outside" line
206 :
207 0 : if (bRightHairline)
208 0 : xRetval[1] = makeHairLinePrimitive(
209 0 : getStart(), getEnd(), aVector, getRGBColorRight(), fLeftWidth+mfDistance);
210 : else
211 0 : xRetval[1] = makeSolidLinePrimitive(
212 0 : aClipRegion, aTmpStart, aTmpEnd, aVector, getRGBColorRight(), fRightWidth, mfDistance+fRightWidth/2.0);
213 : }
214 : else
215 : {
216 : // single line, create geometry
217 0 : basegfx::B2DPolygon aPolygon;
218 0 : const double fExt = getWidth(rViewInformation); // Extend a lot: it'll be clipped after
219 0 : const basegfx::B2DPoint aTmpStart(getStart() - (fExt * aVector));
220 0 : const basegfx::B2DPoint aTmpEnd(getEnd() + (fExt * aVector));
221 :
222 : // Get which is the line to show
223 0 : bool bIsSolidline = isSolidLine();
224 0 : double nWidth = getLeftWidth();
225 0 : basegfx::BColor aColor = getRGBColorLeft();
226 0 : if ( basegfx::fTools::equal( 0.0, mfLeftWidth ) )
227 : {
228 0 : nWidth = getRightWidth();
229 0 : aColor = getRGBColorRight();
230 : }
231 : bool const bIsHairline = lcl_UseHairline(
232 0 : nWidth, getStart(), getEnd(), rViewInformation);
233 : nWidth = lcl_GetCorrectedWidth(nWidth,
234 0 : getStart(), getEnd(), rViewInformation);
235 :
236 0 : if(bIsHairline && bIsSolidline)
237 : {
238 : // create hairline primitive
239 0 : aPolygon.append( getStart() );
240 0 : aPolygon.append( getEnd() );
241 :
242 0 : xRetval.realloc(1);
243 0 : xRetval[0] = Primitive2DReference(new PolygonHairlinePrimitive2D(
244 : aPolygon,
245 0 : aColor));
246 : }
247 : else
248 : {
249 : // create filled polygon primitive
250 0 : const basegfx::B2DVector aLineWidthOffset(((nWidth + 1) * 0.5) * aPerpendicular);
251 :
252 0 : aPolygon.append( aTmpStart );
253 0 : aPolygon.append( aTmpEnd );
254 :
255 : basegfx::B2DPolyPolygon aDashed =
256 0 : svtools::ApplyLineDashing(aPolygon, getStyle(), mfPatternScale*10.0);
257 :
258 0 : for (sal_uInt32 i = 0; i < aDashed.count(); i++ )
259 : {
260 0 : basegfx::B2DPolygon aDash = aDashed.getB2DPolygon( i );
261 0 : basegfx::B2DPoint aDashStart = aDash.getB2DPoint( 0 );
262 0 : basegfx::B2DPoint aDashEnd = aDash.getB2DPoint( aDash.count() - 1 );
263 :
264 0 : basegfx::B2DPolygon aDashPolygon;
265 0 : aDashPolygon.append( aDashStart + aLineWidthOffset );
266 0 : aDashPolygon.append( aDashEnd + aLineWidthOffset );
267 0 : aDashPolygon.append( aDashEnd - aLineWidthOffset );
268 0 : aDashPolygon.append( aDashStart - aLineWidthOffset );
269 0 : aDashPolygon.setClosed( true );
270 :
271 : basegfx::B2DPolyPolygon aClipped = basegfx::tools::clipPolygonOnPolyPolygon(
272 0 : aDashPolygon, aClipRegion, true, false );
273 :
274 0 : if ( aClipped.count() )
275 0 : aDashed.setB2DPolygon( i, aClipped.getB2DPolygon( 0 ) );
276 0 : }
277 :
278 0 : sal_uInt32 n = aDashed.count();
279 0 : xRetval.realloc(n);
280 0 : for (sal_uInt32 i = 0; i < n; ++i)
281 : {
282 0 : basegfx::B2DPolygon aDash = aDashed.getB2DPolygon(i);
283 0 : if (bIsHairline)
284 : {
285 : // Convert a rectanglar polygon into a line.
286 0 : basegfx::B2DPolygon aDash2;
287 0 : basegfx::B2DRange aRange = aDash.getB2DRange();
288 0 : aDash2.append(basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY()));
289 0 : aDash2.append(basegfx::B2DPoint(aRange.getMaxX(), aRange.getMinY()));
290 0 : xRetval[i] = Primitive2DReference(
291 0 : new PolygonHairlinePrimitive2D(aDash2, aColor));
292 : }
293 : else
294 : {
295 0 : xRetval[i] = Primitive2DReference(
296 0 : new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aDash), aColor));
297 : }
298 0 : }
299 0 : }
300 0 : }
301 : }
302 :
303 0 : return xRetval;
304 : }
305 :
306 0 : BorderLinePrimitive2D::BorderLinePrimitive2D(
307 : const basegfx::B2DPoint& rStart,
308 : const basegfx::B2DPoint& rEnd,
309 : double fLeftWidth,
310 : double fDistance,
311 : double fRightWidth,
312 : double fExtendLeftStart,
313 : double fExtendLeftEnd,
314 : double fExtendRightStart,
315 : double fExtendRightEnd,
316 : const basegfx::BColor& rRGBColorRight,
317 : const basegfx::BColor& rRGBColorLeft,
318 : const basegfx::BColor& rRGBColorGap,
319 : bool bHasGapColor,
320 : const short nStyle,
321 : double fPatternScale)
322 : : BufferedDecompositionPrimitive2D(),
323 : maStart(rStart),
324 : maEnd(rEnd),
325 : mfLeftWidth(fLeftWidth),
326 : mfDistance(fDistance),
327 : mfRightWidth(fRightWidth),
328 : mfExtendLeftStart(fExtendLeftStart),
329 : mfExtendLeftEnd(fExtendLeftEnd),
330 : mfExtendRightStart(fExtendRightStart),
331 : mfExtendRightEnd(fExtendRightEnd),
332 : maRGBColorRight(rRGBColorRight),
333 : maRGBColorLeft(rRGBColorLeft),
334 : maRGBColorGap(rRGBColorGap),
335 : mbHasGapColor(bHasGapColor),
336 : mnStyle(nStyle),
337 0 : mfPatternScale(fPatternScale)
338 : {
339 0 : }
340 :
341 0 : bool BorderLinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
342 : {
343 0 : if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
344 : {
345 0 : const BorderLinePrimitive2D& rCompare = (BorderLinePrimitive2D&)rPrimitive;
346 :
347 0 : return (getStart() == rCompare.getStart()
348 0 : && getEnd() == rCompare.getEnd()
349 0 : && getLeftWidth() == rCompare.getLeftWidth()
350 0 : && getDistance() == rCompare.getDistance()
351 0 : && getRightWidth() == rCompare.getRightWidth()
352 0 : && getExtendLeftStart() == rCompare.getExtendLeftStart()
353 0 : && getExtendLeftEnd() == rCompare.getExtendLeftEnd()
354 0 : && getExtendRightStart() == rCompare.getExtendRightStart()
355 0 : && getExtendRightEnd() == rCompare.getExtendRightEnd()
356 0 : && getRGBColorRight() == rCompare.getRGBColorRight()
357 0 : && getRGBColorLeft() == rCompare.getRGBColorLeft()
358 0 : && getRGBColorGap() == rCompare.getRGBColorGap()
359 0 : && hasGapColor() == rCompare.hasGapColor()
360 0 : && getStyle() == rCompare.getStyle()
361 0 : && getPatternScale() == rCompare.getPatternScale());
362 : }
363 :
364 0 : return false;
365 : }
366 :
367 : // provide unique ID
368 0 : ImplPrimitive2DIDBlock(BorderLinePrimitive2D, PRIMITIVE2D_ID_BORDERLINEPRIMITIVE2D)
369 :
370 : } // end of namespace primitive2d
371 : } // end of namespace drawinglayer
372 :
373 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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