Line data Source code
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 <numeric>
21 :
22 : #include <vcl/outdev.hxx>
23 : #include <vcl/virdev.hxx>
24 : #include <vcl/window.hxx>
25 :
26 : #include <salgdi.hxx>
27 :
28 : #include "outdata.hxx"
29 :
30 : #include <basegfx/matrix/b2dhommatrix.hxx>
31 : #include <basegfx/polygon/b2dpolygontools.hxx>
32 : #include <basegfx/polygon/b2dpolypolygontools.hxx>
33 : #include <basegfx/polygon/b2dlinegeometry.hxx>
34 :
35 0 : void OutputDevice::DrawLine( const Point& rStartPt, const Point& rEndPt,
36 : const LineInfo& rLineInfo )
37 : {
38 0 : assert_if_double_buffered_window();
39 :
40 0 : if ( rLineInfo.IsDefault() )
41 : {
42 0 : DrawLine( rStartPt, rEndPt );
43 0 : return;
44 : }
45 :
46 0 : if ( mpMetaFile )
47 0 : mpMetaFile->AddAction( new MetaLineAction( rStartPt, rEndPt, rLineInfo ) );
48 :
49 0 : if ( !IsDeviceOutputNecessary() || !mbLineColor || ( LINE_NONE == rLineInfo.GetStyle() ) || ImplIsRecordLayout() )
50 0 : return;
51 :
52 0 : if( !mpGraphics )
53 : {
54 0 : if ( !AcquireGraphics() )
55 0 : return;
56 : }
57 :
58 0 : if ( mbInitClipRegion )
59 0 : InitClipRegion();
60 :
61 0 : if ( mbOutputClipped )
62 0 : return;
63 :
64 0 : const Point aStartPt( ImplLogicToDevicePixel( rStartPt ) );
65 0 : const Point aEndPt( ImplLogicToDevicePixel( rEndPt ) );
66 0 : const LineInfo aInfo( ImplLogicToDevicePixel( rLineInfo ) );
67 0 : const bool bDashUsed(LINE_DASH == aInfo.GetStyle());
68 0 : const bool bLineWidthUsed(aInfo.GetWidth() > 1);
69 :
70 0 : if ( mbInitLineColor )
71 0 : InitLineColor();
72 :
73 0 : if(bDashUsed || bLineWidthUsed)
74 : {
75 0 : basegfx::B2DPolygon aLinePolygon;
76 0 : aLinePolygon.append(basegfx::B2DPoint(aStartPt.X(), aStartPt.Y()));
77 0 : aLinePolygon.append(basegfx::B2DPoint(aEndPt.X(), aEndPt.Y()));
78 :
79 0 : drawLine( basegfx::B2DPolyPolygon(aLinePolygon), aInfo );
80 : }
81 : else
82 : {
83 0 : mpGraphics->DrawLine( aStartPt.X(), aStartPt.Y(), aEndPt.X(), aEndPt.Y(), this );
84 : }
85 :
86 0 : if( mpAlphaVDev )
87 0 : mpAlphaVDev->DrawLine( rStartPt, rEndPt, rLineInfo );
88 : }
89 :
90 1129274 : void OutputDevice::DrawLine( const Point& rStartPt, const Point& rEndPt )
91 : {
92 1129274 : assert_if_double_buffered_window();
93 :
94 1129274 : if ( mpMetaFile )
95 55982 : mpMetaFile->AddAction( new MetaLineAction( rStartPt, rEndPt ) );
96 :
97 1129274 : if ( !IsDeviceOutputNecessary() || !mbLineColor || ImplIsRecordLayout() )
98 66141 : return;
99 :
100 1124247 : if ( !mpGraphics )
101 : {
102 3180 : if ( !AcquireGraphics() )
103 0 : return;
104 : }
105 :
106 1124247 : if ( mbInitClipRegion )
107 38045 : InitClipRegion();
108 :
109 1124247 : if ( mbOutputClipped )
110 56087 : return;
111 :
112 1068160 : if ( mbInitLineColor )
113 449164 : InitLineColor();
114 :
115 : // #i101598# support AA and snap for lines, too
116 2136320 : if((mnAntialiasing & AntialiasingFlags::EnableB2dDraw)
117 1068160 : && mpGraphics->supportsOperation(OutDevSupport_B2DDraw)
118 0 : && ROP_OVERPAINT == GetRasterOp()
119 3204480 : && IsLineColor())
120 : {
121 : // at least transform with double precision to device coordinates; this will
122 : // avoid pixel snap of single, appended lines
123 0 : const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
124 0 : const basegfx::B2DVector aB2DLineWidth( 1.0, 1.0 );
125 0 : basegfx::B2DPolygon aB2DPolyLine;
126 :
127 0 : aB2DPolyLine.append(basegfx::B2DPoint(rStartPt.X(), rStartPt.Y()));
128 0 : aB2DPolyLine.append(basegfx::B2DPoint(rEndPt.X(), rEndPt.Y()));
129 0 : aB2DPolyLine.transform( aTransform );
130 :
131 0 : if(mnAntialiasing & AntialiasingFlags::PixelSnapHairline)
132 : {
133 0 : aB2DPolyLine = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aB2DPolyLine);
134 : }
135 :
136 0 : if( mpGraphics->DrawPolyLine( aB2DPolyLine, 0.0, aB2DLineWidth, basegfx::B2DLineJoin::NONE, css::drawing::LineCap_BUTT, this))
137 : {
138 0 : return;
139 0 : }
140 : }
141 :
142 1068160 : const Point aStartPt(ImplLogicToDevicePixel(rStartPt));
143 1068160 : const Point aEndPt(ImplLogicToDevicePixel(rEndPt));
144 :
145 1068160 : mpGraphics->DrawLine( aStartPt.X(), aStartPt.Y(), aEndPt.X(), aEndPt.Y(), this );
146 :
147 1068160 : if( mpAlphaVDev )
148 55473 : mpAlphaVDev->DrawLine( rStartPt, rEndPt );
149 : }
150 :
151 13 : void OutputDevice::drawLine( basegfx::B2DPolyPolygon aLinePolyPolygon, const LineInfo& rInfo )
152 : {
153 39 : const bool bTryAA((mnAntialiasing & AntialiasingFlags::EnableB2dDraw)
154 13 : && mpGraphics->supportsOperation(OutDevSupport_B2DDraw)
155 0 : && ROP_OVERPAINT == GetRasterOp()
156 39 : && IsLineColor());
157 13 : basegfx::B2DPolyPolygon aFillPolyPolygon;
158 13 : const bool bDashUsed(LINE_DASH == rInfo.GetStyle());
159 13 : const bool bLineWidthUsed(rInfo.GetWidth() > 1);
160 :
161 13 : if(bDashUsed && aLinePolyPolygon.count())
162 : {
163 3 : ::std::vector< double > fDotDashArray;
164 3 : const double fDashLen(rInfo.GetDashLen());
165 3 : const double fDotLen(rInfo.GetDotLen());
166 3 : const double fDistance(rInfo.GetDistance());
167 :
168 3 : for(sal_uInt16 a(0); a < rInfo.GetDashCount(); a++)
169 : {
170 0 : fDotDashArray.push_back(fDashLen);
171 0 : fDotDashArray.push_back(fDistance);
172 : }
173 :
174 6 : for(sal_uInt16 b(0); b < rInfo.GetDotCount(); b++)
175 : {
176 3 : fDotDashArray.push_back(fDotLen);
177 3 : fDotDashArray.push_back(fDistance);
178 : }
179 :
180 3 : const double fAccumulated(::std::accumulate(fDotDashArray.begin(), fDotDashArray.end(), 0.0));
181 :
182 3 : if(fAccumulated > 0.0)
183 : {
184 3 : basegfx::B2DPolyPolygon aResult;
185 :
186 6 : for(sal_uInt32 c(0); c < aLinePolyPolygon.count(); c++)
187 : {
188 3 : basegfx::B2DPolyPolygon aLineTarget;
189 : basegfx::tools::applyLineDashing(
190 : aLinePolyPolygon.getB2DPolygon(c),
191 : fDotDashArray,
192 3 : &aLineTarget);
193 3 : aResult.append(aLineTarget);
194 3 : }
195 :
196 3 : aLinePolyPolygon = aResult;
197 3 : }
198 : }
199 :
200 13 : if(bLineWidthUsed && aLinePolyPolygon.count())
201 : {
202 10 : const double fHalfLineWidth((rInfo.GetWidth() * 0.5) + 0.5);
203 :
204 10 : if(aLinePolyPolygon.areControlPointsUsed())
205 : {
206 : // #i110768# When area geometry has to be created, do not
207 : // use the fallback bezier decomposition inside createAreaGeometry,
208 : // but one that is at least as good as ImplSubdivideBezier was.
209 : // There, Polygon::AdaptiveSubdivide was used with default parameter
210 : // 1.0 as quality index.
211 0 : aLinePolyPolygon = basegfx::tools::adaptiveSubdivideByDistance(aLinePolyPolygon, 1.0);
212 : }
213 :
214 20 : for(sal_uInt32 a(0); a < aLinePolyPolygon.count(); a++)
215 : {
216 : aFillPolyPolygon.append(basegfx::tools::createAreaGeometry(
217 : aLinePolyPolygon.getB2DPolygon(a),
218 : fHalfLineWidth,
219 : rInfo.GetLineJoin(),
220 10 : rInfo.GetLineCap()));
221 : }
222 :
223 10 : aLinePolyPolygon.clear();
224 : }
225 :
226 13 : GDIMetaFile* pOldMetaFile = mpMetaFile;
227 13 : mpMetaFile = NULL;
228 :
229 13 : if(aLinePolyPolygon.count())
230 : {
231 426 : for(sal_uInt32 a(0); a < aLinePolyPolygon.count(); a++)
232 : {
233 423 : const basegfx::B2DPolygon aCandidate(aLinePolyPolygon.getB2DPolygon(a));
234 423 : bool bDone(false);
235 :
236 423 : if(bTryAA)
237 : {
238 0 : bDone = mpGraphics->DrawPolyLine( aCandidate, 0.0, basegfx::B2DVector(1.0,1.0), basegfx::B2DLineJoin::NONE, css::drawing::LineCap_BUTT, this);
239 : }
240 :
241 423 : if(!bDone)
242 : {
243 423 : const Polygon aPolygon(aCandidate);
244 423 : mpGraphics->DrawPolyLine(aPolygon.GetSize(), reinterpret_cast<const SalPoint*>(aPolygon.GetConstPointAry()), this);
245 : }
246 423 : }
247 : }
248 :
249 13 : if(aFillPolyPolygon.count())
250 : {
251 10 : const Color aOldLineColor( maLineColor );
252 10 : const Color aOldFillColor( maFillColor );
253 :
254 10 : SetLineColor();
255 10 : InitLineColor();
256 10 : SetFillColor( aOldLineColor );
257 10 : InitFillColor();
258 :
259 10 : bool bDone(false);
260 :
261 10 : if(bTryAA)
262 : {
263 0 : bDone = mpGraphics->DrawPolyPolygon(aFillPolyPolygon, 0.0, this);
264 : }
265 :
266 10 : if(!bDone)
267 : {
268 159 : for(sal_uInt32 a(0); a < aFillPolyPolygon.count(); a++)
269 : {
270 149 : Polygon aPolygon(aFillPolyPolygon.getB2DPolygon(a));
271 :
272 : // need to subdivide, mpGraphics->DrawPolygon ignores curves
273 149 : aPolygon.AdaptiveSubdivide(aPolygon);
274 149 : mpGraphics->DrawPolygon(aPolygon.GetSize(), reinterpret_cast<const SalPoint*>(aPolygon.GetConstPointAry()), this);
275 149 : }
276 : }
277 :
278 10 : SetFillColor( aOldFillColor );
279 10 : SetLineColor( aOldLineColor );
280 : }
281 :
282 13 : mpMetaFile = pOldMetaFile;
283 814 : }
284 :
285 :
286 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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