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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 <vclhelperbitmaprender.hxx>
21 : #include <svtools/grfmgr.hxx>
22 : #include <basegfx/vector/b2dvector.hxx>
23 : #include <basegfx/matrix/b2dhommatrix.hxx>
24 : #include <basegfx/range/b2drange.hxx>
25 : #include <vcl/outdev.hxx>
26 : #include <vclhelperbitmaptransform.hxx>
27 : #include <basegfx/matrix/b2dhommatrixtools.hxx>
28 :
29 : //////////////////////////////////////////////////////////////////////////////
30 : // support for different kinds of bitmap rendering using vcl
31 :
32 : namespace drawinglayer
33 : {
34 8 : void RenderBitmapPrimitive2D_GraphicManager(
35 : OutputDevice& rOutDev,
36 : const BitmapEx& rBitmapEx,
37 : const basegfx::B2DHomMatrix& rTransform)
38 : {
39 : // prepare attributes
40 8 : GraphicAttr aAttributes;
41 :
42 : // decompose matrix to check for shear, rotate and mirroring
43 8 : basegfx::B2DVector aScale, aTranslate;
44 : double fRotate, fShearX;
45 8 : rTransform.decompose(aScale, aTranslate, fRotate, fShearX);
46 :
47 : // mirror flags
48 8 : const bool bMirrorX(basegfx::fTools::less(aScale.getX(), 0.0));
49 8 : const bool bMirrorY(basegfx::fTools::less(aScale.getY(), 0.0));
50 8 : aAttributes.SetMirrorFlags((bMirrorX ? BMP_MIRROR_HORZ : 0)|(bMirrorY ? BMP_MIRROR_VERT : 0));
51 :
52 : // rotation
53 8 : if(!basegfx::fTools::equalZero(fRotate))
54 : {
55 0 : double fRotation(fmod(3600.0 - (fRotate * (10.0 / F_PI180)), 3600.0));
56 0 : aAttributes.SetRotation((sal_uInt16)(fRotation));
57 : }
58 :
59 : // prepare Bitmap
60 8 : basegfx::B2DRange aOutlineRange(0.0, 0.0, 1.0, 1.0);
61 :
62 8 : if(basegfx::fTools::equalZero(fRotate))
63 : {
64 8 : aOutlineRange.transform(rTransform);
65 : }
66 : else
67 : {
68 : // if rotated, create the unrotated output rectangle for the GraphicManager paint
69 : // #118824# Caution! When mirrored, adapt transformation accordingly
70 : const basegfx::B2DHomMatrix aSimpleObjectMatrix(
71 : basegfx::tools::createScaleTranslateB2DHomMatrix(
72 0 : fabs(aScale.getX()),
73 0 : fabs(aScale.getY()),
74 0 : bMirrorX ? aTranslate.getX() - fabs(aScale.getX()): aTranslate.getX(),
75 0 : bMirrorY ? aTranslate.getY() - fabs(aScale.getY()): aTranslate.getY()));
76 :
77 0 : aOutlineRange.transform(aSimpleObjectMatrix);
78 : }
79 :
80 : // prepare dest coordinates
81 : const Point aPoint(
82 : basegfx::fround(aOutlineRange.getMinX()),
83 8 : basegfx::fround(aOutlineRange.getMinY()));
84 : const Size aSize(
85 : basegfx::fround(aOutlineRange.getWidth()),
86 8 : basegfx::fround(aOutlineRange.getHeight()));
87 :
88 : // paint it using GraphicManager
89 8 : Graphic aGraphic(rBitmapEx);
90 8 : GraphicObject aGraphicObject(aGraphic);
91 8 : aGraphicObject.Draw(&rOutDev, aPoint, aSize, &aAttributes);
92 8 : }
93 :
94 0 : void RenderBitmapPrimitive2D_BitmapEx(
95 : OutputDevice& rOutDev,
96 : const BitmapEx& rBitmapEx,
97 : const basegfx::B2DHomMatrix& rTransform)
98 : {
99 : // only translate and scale, use vcl's DrawBitmapEx().
100 0 : BitmapEx aContent(rBitmapEx);
101 :
102 : // prepare dest coor. Necessary to expand since vcl's DrawBitmapEx draws one pix less
103 0 : basegfx::B2DRange aOutlineRange(0.0, 0.0, 1.0, 1.0);
104 0 : aOutlineRange.transform(rTransform);
105 : // prepare dest coordinates
106 : const Point aPoint(
107 : basegfx::fround(aOutlineRange.getMinX()),
108 0 : basegfx::fround(aOutlineRange.getMinY()));
109 : const Size aSize(
110 : basegfx::fround(aOutlineRange.getWidth()),
111 0 : basegfx::fround(aOutlineRange.getHeight()));
112 :
113 : // decompose matrix to check for shear, rotate and mirroring
114 0 : basegfx::B2DVector aScale, aTranslate;
115 : double fRotate, fShearX;
116 0 : rTransform.decompose(aScale, aTranslate, fRotate, fShearX);
117 :
118 : // Check mirroring.
119 0 : sal_uInt32 nMirrorFlags(BMP_MIRROR_NONE);
120 :
121 0 : if(basegfx::fTools::less(aScale.getX(), 0.0))
122 : {
123 0 : nMirrorFlags |= BMP_MIRROR_HORZ;
124 : }
125 :
126 0 : if(basegfx::fTools::less(aScale.getY(), 0.0))
127 : {
128 0 : nMirrorFlags |= BMP_MIRROR_VERT;
129 : }
130 :
131 0 : if(BMP_MIRROR_NONE != nMirrorFlags)
132 : {
133 0 : aContent.Mirror(nMirrorFlags);
134 : }
135 :
136 : // draw bitmap
137 0 : rOutDev.DrawBitmapEx(aPoint, aSize, aContent);
138 0 : }
139 :
140 0 : void RenderBitmapPrimitive2D_self(
141 : OutputDevice& rOutDev,
142 : const BitmapEx& rBitmapEx,
143 : const basegfx::B2DHomMatrix& rTransform)
144 : {
145 : // process self with free transformation (containing shear and rotate). Get dest rect in pixels.
146 0 : basegfx::B2DRange aOutlineRange(0.0, 0.0, 1.0, 1.0);
147 0 : aOutlineRange.transform(rTransform);
148 : const Rectangle aDestRectLogic(
149 : basegfx::fround(aOutlineRange.getMinX()),
150 : basegfx::fround(aOutlineRange.getMinY()),
151 : basegfx::fround(aOutlineRange.getMaxX()),
152 0 : basegfx::fround(aOutlineRange.getMaxY()));
153 0 : const Rectangle aDestRectPixel(rOutDev.LogicToPixel(aDestRectLogic));
154 :
155 : // #i96708# check if Metafile is recorded
156 0 : const GDIMetaFile* pMetaFile = rOutDev.GetConnectMetaFile();
157 0 : const bool bRecordToMetaFile(pMetaFile && pMetaFile->IsRecord() && !pMetaFile->IsPause());
158 :
159 : // intersect with output pixel size, but only
160 : // when not recording to metafile
161 0 : const Rectangle aOutputRectPixel(Point(), rOutDev.GetOutputSizePixel());
162 0 : Rectangle aCroppedRectPixel(bRecordToMetaFile ? aDestRectPixel : aDestRectPixel.GetIntersection(aOutputRectPixel));
163 :
164 0 : if(!aCroppedRectPixel.IsEmpty())
165 : {
166 : // as maximum for destination, orientate at aOutputRectPixel, but
167 : // take a rotation of 45 degrees (sqrt(2)) as maximum expansion into account
168 0 : const Size aSourceSizePixel(rBitmapEx.GetSizePixel());
169 : const double fMaximumArea(
170 0 : (double)aOutputRectPixel.getWidth() *
171 0 : (double)aOutputRectPixel.getHeight() *
172 0 : 1.4142136); // 1.4142136 taken as sqrt(2.0)
173 :
174 : // test if discrete view size (pixel) maybe too big and limit it
175 0 : const double fArea(aCroppedRectPixel.getWidth() * aCroppedRectPixel.getHeight());
176 0 : const bool bNeedToReduce(fArea > fMaximumArea);
177 0 : double fReduceFactor(1.0);
178 0 : const Size aDestSizePixel(aCroppedRectPixel.GetSize());
179 :
180 0 : if(bNeedToReduce)
181 : {
182 0 : fReduceFactor = sqrt(fMaximumArea / fArea);
183 0 : aCroppedRectPixel.setWidth(basegfx::fround(aCroppedRectPixel.getWidth() * fReduceFactor));
184 0 : aCroppedRectPixel.setHeight(basegfx::fround(aCroppedRectPixel.getHeight() * fReduceFactor));
185 : }
186 :
187 : // build transform from pixel in aDestination to pixel in rBitmapEx
188 : // from relative in aCroppedRectPixel to relative in aDestRectPixel
189 : // No need to take bNeedToReduce into account, TopLeft is unchanged
190 : basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(
191 0 : aCroppedRectPixel.Left() - aDestRectPixel.Left(),
192 0 : aCroppedRectPixel.Top() - aDestRectPixel.Top()));
193 :
194 : // from relative in aDestRectPixel to absolute Logic. Here it
195 : // is essential to adapt to reduce factor (if used)
196 0 : double fAdaptedDRPWidth((double)aDestRectPixel.getWidth());
197 0 : double fAdaptedDRPHeight((double)aDestRectPixel.getHeight());
198 :
199 0 : if(bNeedToReduce)
200 : {
201 0 : fAdaptedDRPWidth *= fReduceFactor;
202 0 : fAdaptedDRPHeight *= fReduceFactor;
203 : }
204 :
205 : aTransform = basegfx::tools::createScaleTranslateB2DHomMatrix(
206 0 : aDestRectLogic.getWidth() / fAdaptedDRPWidth, aDestRectLogic.getHeight() / fAdaptedDRPHeight,
207 0 : aDestRectLogic.Left(), aDestRectLogic.Top())
208 0 : * aTransform;
209 :
210 : // from absolute in Logic to unified object coordinates (0.0 .. 1.0 in x and y)
211 0 : basegfx::B2DHomMatrix aInvBitmapTransform(rTransform);
212 0 : aInvBitmapTransform.invert();
213 0 : aTransform = aInvBitmapTransform * aTransform;
214 :
215 : // from unit object coordinates to rBitmapEx pixel coordintes
216 0 : aTransform.scale(aSourceSizePixel.getWidth() - 1L, aSourceSizePixel.getHeight() - 1L);
217 :
218 : // create bitmap using source, destination and linear back-transformation
219 0 : BitmapEx aDestination = impTransformBitmapEx(rBitmapEx, aCroppedRectPixel, aTransform);
220 :
221 : // paint
222 0 : if(bNeedToReduce)
223 : {
224 : // paint in target size
225 0 : if(bRecordToMetaFile)
226 : {
227 : rOutDev.DrawBitmapEx(
228 0 : rOutDev.PixelToLogic(aCroppedRectPixel.TopLeft()),
229 : rOutDev.PixelToLogic(aDestSizePixel),
230 0 : aDestination);
231 : }
232 : else
233 : {
234 0 : const bool bWasEnabled(rOutDev.IsMapModeEnabled());
235 0 : rOutDev.EnableMapMode(false);
236 :
237 : rOutDev.DrawBitmapEx(
238 : aCroppedRectPixel.TopLeft(),
239 : aDestSizePixel,
240 0 : aDestination);
241 :
242 0 : rOutDev.EnableMapMode(bWasEnabled);
243 : }
244 : }
245 : else
246 : {
247 0 : if(bRecordToMetaFile)
248 : {
249 : rOutDev.DrawBitmapEx(
250 0 : rOutDev.PixelToLogic(aCroppedRectPixel.TopLeft()),
251 0 : aDestination);
252 : }
253 : else
254 : {
255 0 : const bool bWasEnabled(rOutDev.IsMapModeEnabled());
256 0 : rOutDev.EnableMapMode(false);
257 :
258 : rOutDev.DrawBitmapEx(
259 : aCroppedRectPixel.TopLeft(),
260 0 : aDestination);
261 :
262 0 : rOutDev.EnableMapMode(bWasEnabled);
263 : }
264 0 : }
265 : }
266 0 : }
267 : } // end of namespace drawinglayer
268 :
269 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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