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 : #include <sal/types.h>
20 :
21 : #include <basegfx/matrix/b2dhommatrix.hxx>
22 : #include <basegfx/polygon/b2dpolygontools.hxx>
23 : #include <basegfx/polygon/b2dlinegeometry.hxx>
24 :
25 : #include <vcl/outdev.hxx>
26 : #include <vcl/settings.hxx>
27 : #include <vcl/virdev.hxx>
28 : #include <vcl/window.hxx>
29 :
30 : #include "salgdi.hxx"
31 :
32 16978 : void OutputDevice::DrawPolyLine( const Polygon& rPoly )
33 : {
34 16978 : assert_if_double_buffered_window();
35 :
36 16978 : if( mpMetaFile )
37 1 : mpMetaFile->AddAction( new MetaPolyLineAction( rPoly ) );
38 :
39 16978 : sal_uInt16 nPoints = rPoly.GetSize();
40 :
41 16978 : if ( !IsDeviceOutputNecessary() || !mbLineColor || (nPoints < 2) || ImplIsRecordLayout() )
42 2 : return;
43 :
44 : // we need a graphics
45 16977 : if ( !mpGraphics && !AcquireGraphics() )
46 0 : return;
47 :
48 16977 : if ( mbInitClipRegion )
49 756 : InitClipRegion();
50 :
51 16977 : if ( mbOutputClipped )
52 0 : return;
53 :
54 16977 : if ( mbInitLineColor )
55 3405 : InitLineColor();
56 :
57 : // use b2dpolygon drawing if possible
58 16977 : if ( DrawPolyLineDirect( rPoly.getB2DPolygon() ) )
59 : {
60 0 : basegfx::B2DPolygon aB2DPolyLine(rPoly.getB2DPolygon());
61 0 : const ::basegfx::B2DHomMatrix aTransform = ImplGetDeviceTransformation();
62 0 : const ::basegfx::B2DVector aB2DLineWidth( 1.0, 1.0 );
63 :
64 : // transform the polygon
65 0 : aB2DPolyLine.transform( aTransform );
66 :
67 0 : if(mnAntialiasing & AntialiasingFlags::PixelSnapHairline)
68 : {
69 0 : aB2DPolyLine = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aB2DPolyLine);
70 : }
71 :
72 0 : if(mpGraphics->DrawPolyLine( aB2DPolyLine, 0.0, aB2DLineWidth,
73 0 : basegfx::B2DLineJoin::NONE, css::drawing::LineCap_BUTT, this))
74 : {
75 0 : return;
76 0 : }
77 : }
78 :
79 16977 : Polygon aPoly = ImplLogicToDevicePixel( rPoly );
80 16977 : const SalPoint* pPtAry = reinterpret_cast<const SalPoint*>(aPoly.GetConstPointAry());
81 :
82 : // #100127# Forward beziers to sal, if any
83 16977 : if( aPoly.HasFlags() )
84 : {
85 0 : const sal_uInt8* pFlgAry = aPoly.GetConstFlagAry();
86 0 : if( !mpGraphics->DrawPolyLineBezier( nPoints, pPtAry, pFlgAry, this ) )
87 : {
88 0 : aPoly = Polygon::SubdivideBezier(aPoly);
89 0 : pPtAry = reinterpret_cast<const SalPoint*>(aPoly.GetConstPointAry());
90 0 : mpGraphics->DrawPolyLine( aPoly.GetSize(), pPtAry, this );
91 : }
92 : }
93 : else
94 : {
95 16977 : mpGraphics->DrawPolyLine( nPoints, pPtAry, this );
96 : }
97 :
98 16977 : if( mpAlphaVDev )
99 2244 : mpAlphaVDev->DrawPolyLine( rPoly );
100 : }
101 :
102 130 : void OutputDevice::DrawPolyLine( const Polygon& rPoly, const LineInfo& rLineInfo )
103 : {
104 130 : assert_if_double_buffered_window();
105 :
106 130 : if ( rLineInfo.IsDefault() )
107 : {
108 0 : DrawPolyLine( rPoly );
109 0 : return;
110 : }
111 :
112 : // #i101491#
113 : // Try direct Fallback to B2D-Version of DrawPolyLine
114 260 : if((mnAntialiasing & AntialiasingFlags::EnableB2dDraw) &&
115 130 : LINE_SOLID == rLineInfo.GetStyle())
116 : {
117 0 : DrawPolyLine( rPoly.getB2DPolygon(), (double)rLineInfo.GetWidth(), rLineInfo.GetLineJoin(), rLineInfo.GetLineCap());
118 0 : return;
119 : }
120 :
121 130 : if ( mpMetaFile )
122 2 : mpMetaFile->AddAction( new MetaPolyLineAction( rPoly, rLineInfo ) );
123 :
124 130 : drawPolyLine(rPoly, rLineInfo);
125 : }
126 :
127 143228 : void OutputDevice::DrawPolyLine( const basegfx::B2DPolygon& rB2DPolygon,
128 : double fLineWidth,
129 : basegfx::B2DLineJoin eLineJoin,
130 : css::drawing::LineCap eLineCap)
131 : {
132 143228 : assert_if_double_buffered_window();
133 :
134 143228 : if( mpMetaFile )
135 : {
136 3477 : LineInfo aLineInfo;
137 3477 : if( fLineWidth != 0.0 )
138 57 : aLineInfo.SetWidth( static_cast<long>(fLineWidth+0.5) );
139 :
140 6954 : const Polygon aToolsPolygon( rB2DPolygon );
141 6954 : mpMetaFile->AddAction( new MetaPolyLineAction( aToolsPolygon, aLineInfo ) );
142 : }
143 :
144 : // Do not paint empty PolyPolygons
145 143228 : if(!rB2DPolygon.count() || !IsDeviceOutputNecessary())
146 3477 : return;
147 :
148 : // we need a graphics
149 139751 : if( !mpGraphics && !AcquireGraphics() )
150 0 : return;
151 :
152 139751 : if( mbInitClipRegion )
153 19 : InitClipRegion();
154 :
155 139751 : if( mbOutputClipped )
156 0 : return;
157 :
158 139751 : if( mbInitLineColor )
159 813 : InitLineColor();
160 :
161 : // use b2dpolygon drawing if possible
162 139751 : if ( DrawPolyLineDirect(rB2DPolygon, fLineWidth, 0.0, eLineJoin, eLineCap) )
163 0 : return;
164 :
165 : // #i101491#
166 : // no output yet; fallback to geometry decomposition and use filled polygon paint
167 : // when line is fat and not too complex. ImplDrawPolyPolygonWithB2DPolyPolygon
168 : // will do internal needed AA checks etc.
169 139751 : if(fLineWidth >= 2.5 &&
170 139751 : rB2DPolygon.count() &&
171 0 : rB2DPolygon.count() <= 1000)
172 : {
173 0 : const double fHalfLineWidth((fLineWidth * 0.5) + 0.5);
174 : const basegfx::B2DPolyPolygon aAreaPolyPolygon(
175 : basegfx::tools::createAreaGeometry( rB2DPolygon,
176 : fHalfLineWidth,
177 : eLineJoin,
178 0 : eLineCap));
179 0 : const Color aOldLineColor(maLineColor);
180 0 : const Color aOldFillColor(maFillColor);
181 :
182 0 : SetLineColor();
183 0 : InitLineColor();
184 0 : SetFillColor(aOldLineColor);
185 0 : InitFillColor();
186 :
187 : // draw usig a loop; else the topology will paint a PolyPolygon
188 0 : for(sal_uInt32 a(0); a < aAreaPolyPolygon.count(); a++)
189 : {
190 : ImplDrawPolyPolygonWithB2DPolyPolygon(
191 0 : basegfx::B2DPolyPolygon(aAreaPolyPolygon.getB2DPolygon(a)));
192 : }
193 :
194 0 : SetLineColor(aOldLineColor);
195 0 : InitLineColor();
196 0 : SetFillColor(aOldFillColor);
197 0 : InitFillColor();
198 :
199 0 : const bool bTryAA((mnAntialiasing & AntialiasingFlags::EnableB2dDraw) &&
200 0 : mpGraphics->supportsOperation(OutDevSupport_B2DDraw) &&
201 0 : ROP_OVERPAINT == GetRasterOp() &&
202 0 : IsLineColor());
203 :
204 : // when AA it is necessary to also paint the filled polygon's outline
205 : // to avoid optical gaps
206 0 : for(sal_uInt32 a(0); a < aAreaPolyPolygon.count(); a++)
207 : {
208 0 : DrawPolyLineDirect( aAreaPolyPolygon.getB2DPolygon(a), 0.0, 0.0, basegfx::B2DLineJoin::NONE, css::drawing::LineCap_BUTT, bTryAA );
209 0 : }
210 : }
211 : else
212 : {
213 : // fallback to old polygon drawing if needed
214 139751 : const Polygon aToolsPolygon( rB2DPolygon );
215 279502 : LineInfo aLineInfo;
216 139751 : if( fLineWidth != 0.0 )
217 0 : aLineInfo.SetWidth( static_cast<long>(fLineWidth+0.5) );
218 :
219 279502 : drawPolyLine( aToolsPolygon, aLineInfo );
220 : }
221 : }
222 :
223 139881 : void OutputDevice::drawPolyLine(const Polygon& rPoly, const LineInfo& rLineInfo)
224 : {
225 139881 : sal_uInt16 nPoints(rPoly.GetSize());
226 :
227 139881 : if ( !IsDeviceOutputNecessary() || !mbLineColor || ( nPoints < 2 ) || ( LINE_NONE == rLineInfo.GetStyle() ) || ImplIsRecordLayout() )
228 236 : return;
229 :
230 139763 : Polygon aPoly = ImplLogicToDevicePixel( rPoly );
231 :
232 : // we need a graphics
233 139763 : if ( !mpGraphics && !AcquireGraphics() )
234 0 : return;
235 :
236 139763 : if ( mbInitClipRegion )
237 3 : InitClipRegion();
238 :
239 139763 : if ( mbOutputClipped )
240 0 : return;
241 :
242 139763 : if ( mbInitLineColor )
243 51 : InitLineColor();
244 :
245 279526 : const LineInfo aInfo( ImplLogicToDevicePixel( rLineInfo ) );
246 139763 : const bool bDashUsed(LINE_DASH == aInfo.GetStyle());
247 139763 : const bool bLineWidthUsed(aInfo.GetWidth() > 1);
248 :
249 139763 : if(bDashUsed || bLineWidthUsed)
250 : {
251 13 : drawLine ( basegfx::B2DPolyPolygon(aPoly.getB2DPolygon()), aInfo );
252 : }
253 : else
254 : {
255 : // #100127# the subdivision HAS to be done here since only a pointer
256 : // to an array of points is given to the DrawPolyLine method, there is
257 : // NO way to find out there that it's a curve.
258 139750 : if( aPoly.HasFlags() )
259 : {
260 2325 : aPoly = Polygon::SubdivideBezier( aPoly );
261 2325 : nPoints = aPoly.GetSize();
262 : }
263 :
264 139750 : mpGraphics->DrawPolyLine(nPoints, reinterpret_cast<const SalPoint*>(aPoly.GetConstPointAry()), this);
265 : }
266 :
267 139763 : if( mpAlphaVDev )
268 139763 : mpAlphaVDev->DrawPolyLine( rPoly, rLineInfo );
269 : }
270 :
271 347312 : bool OutputDevice::DrawPolyLineDirect( const basegfx::B2DPolygon& rB2DPolygon,
272 : double fLineWidth,
273 : double fTransparency,
274 : basegfx::B2DLineJoin eLineJoin,
275 : css::drawing::LineCap eLineCap,
276 : bool bBypassAACheck )
277 : {
278 347312 : assert_if_double_buffered_window();
279 :
280 : // AW: Do NOT paint empty PolyPolygons
281 347312 : if(!rB2DPolygon.count())
282 0 : return true;
283 :
284 : // we need a graphics
285 347312 : if( !mpGraphics && !AcquireGraphics() )
286 0 : return false;
287 :
288 347312 : if( mbInitClipRegion )
289 9099 : InitClipRegion();
290 :
291 347312 : if( mbOutputClipped )
292 0 : return true;
293 :
294 347312 : if( mbInitLineColor )
295 21690 : InitLineColor();
296 :
297 1041936 : const bool bTryAA( bBypassAACheck ||
298 1041936 : ((mnAntialiasing & AntialiasingFlags::EnableB2dDraw) &&
299 347312 : mpGraphics->supportsOperation(OutDevSupport_B2DDraw) &&
300 0 : ROP_OVERPAINT == GetRasterOp() &&
301 347312 : IsLineColor()));
302 :
303 347312 : if(bTryAA)
304 : {
305 0 : const basegfx::B2DHomMatrix aTransform = ImplGetDeviceTransformation();
306 0 : basegfx::B2DVector aB2DLineWidth(1.0, 1.0);
307 :
308 : // transform the line width if used
309 0 : if( fLineWidth != 0.0 )
310 : {
311 0 : aB2DLineWidth = aTransform * ::basegfx::B2DVector( fLineWidth, fLineWidth );
312 : }
313 :
314 : // transform the polygon
315 0 : basegfx::B2DPolygon aB2DPolygon(rB2DPolygon);
316 0 : aB2DPolygon.transform(aTransform);
317 :
318 0 : if((mnAntialiasing & AntialiasingFlags::PixelSnapHairline) &&
319 0 : aB2DPolygon.count() < 1000)
320 : {
321 : // #i98289#, #i101491#
322 : // better to remove doubles on device coordinates. Also assume from a given amount
323 : // of points that the single edges are not long enough to smooth
324 0 : aB2DPolygon.removeDoublePoints();
325 0 : aB2DPolygon = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aB2DPolygon);
326 : }
327 :
328 : // draw the polyline
329 : bool bDrawSuccess = mpGraphics->DrawPolyLine( aB2DPolygon,
330 : fTransparency,
331 : aB2DLineWidth,
332 : eLineJoin,
333 : eLineCap,
334 0 : this );
335 :
336 0 : if( bDrawSuccess )
337 : {
338 : // worked, add metafile action (if recorded) and return true
339 0 : if( mpMetaFile )
340 : {
341 0 : LineInfo aLineInfo;
342 0 : if( fLineWidth != 0.0 )
343 0 : aLineInfo.SetWidth( static_cast<long>(fLineWidth+0.5) );
344 :
345 0 : const Polygon aToolsPolygon( rB2DPolygon );
346 0 : mpMetaFile->AddAction( new MetaPolyLineAction( aToolsPolygon, aLineInfo ) );
347 : }
348 0 : return true;
349 0 : }
350 : }
351 347312 : return false;
352 801 : }
353 :
354 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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