1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <svgimagenode.hxx>
#include <svgdocument.hxx>
#include <tools/stream.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/graphicfilter.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <rtl/uri.hxx>
#include <sal/log.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <comphelper/base64.hxx>
#include <toolkit/helper/vclunohelper.hxx>
namespace svgio::svgreader
{
SvgImageNode::SvgImageNode(
SvgDocument& rDocument,
SvgNode* pParent)
: SvgNode(SVGToken::Rect, rDocument, pParent),
maSvgStyleAttributes(*this),
maX(0),
maY(0),
maWidth(0),
maHeight(0)
{
}
SvgImageNode::~SvgImageNode()
{
}
const SvgStyleAttributes* SvgImageNode::getSvgStyleAttributes() const
{
return checkForCssStyle("image", maSvgStyleAttributes);
}
void SvgImageNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
{
// call parent
SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
// read style attributes
maSvgStyleAttributes.parseStyleAttribute(aSVGToken, aContent, false);
// parse own
switch(aSVGToken)
{
case SVGToken::Style:
{
readLocalCssStyle(aContent);
break;
}
case SVGToken::PreserveAspectRatio:
{
maSvgAspectRatio = readSvgAspectRatio(aContent);
break;
}
case SVGToken::Transform:
{
const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
if(!aMatrix.isIdentity())
{
setTransform(aMatrix);
}
break;
}
case SVGToken::X:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
maX = aNum;
}
break;
}
case SVGToken::Y:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
maY = aNum;
}
break;
}
case SVGToken::Width:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
if(aNum.isPositive())
{
maWidth = aNum;
}
}
break;
}
case SVGToken::Height:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
if(aNum.isPositive())
{
maHeight = aNum;
}
}
break;
}
case SVGToken::Href:
case SVGToken::XlinkHref:
{
const sal_Int32 nLen(aContent.getLength());
if(nLen)
{
readImageLink(aContent, maXLink, maUrl, maMimeType, maData);
}
break;
}
default:
{
break;
}
}
}
static void extractFromGraphic(
const Graphic& rGraphic,
drawinglayer::primitive2d::Primitive2DContainer& rEmbedded,
basegfx::B2DRange& rViewBox,
BitmapEx& rBitmapEx)
{
if(GraphicType::Bitmap == rGraphic.GetType())
{
if(rGraphic.getVectorGraphicData())
{
// embedded Svg
rEmbedded = rGraphic.getVectorGraphicData()->getPrimitive2DSequence();
// fill aViewBox
rViewBox = rGraphic.getVectorGraphicData()->getRange();
}
else
{
// get bitmap
rBitmapEx = rGraphic.GetBitmapEx();
}
}
else
{
// evtl. convert to bitmap
rBitmapEx = rGraphic.GetBitmapEx();
}
}
void SvgImageNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool /*bReferenced*/) const
{
// get size range and create path
const SvgStyleAttributes* pStyle = getSvgStyleAttributes();
if(!(pStyle && getWidth().isSet() && getHeight().isSet()))
return;
const double fWidth(getWidth().solve(*this, NumberType::xcoordinate));
const double fHeight(getHeight().solve(*this, NumberType::ycoordinate));
if(fWidth <= 0.0 || fHeight <= 0.0)
return;
BitmapEx aBitmapEx;
drawinglayer::primitive2d::Primitive2DContainer aNewTarget;
// prepare Target and ViewBox for evtl. AspectRatio mappings
const double fX(getX().isSet() ? getX().solve(*this, NumberType::xcoordinate) : 0.0);
const double fY(getY().isSet() ? getY().solve(*this, NumberType::ycoordinate) : 0.0);
const basegfx::B2DRange aTarget(fX, fY, fX + fWidth, fY + fHeight);
basegfx::B2DRange aViewBox(aTarget);
if(!maMimeType.isEmpty() && !maData.isEmpty())
{
// use embedded base64 encoded data
css::uno::Sequence< sal_Int8 > aPass;
::comphelper::Base64::decode(aPass, maData);
if(aPass.hasElements())
{
SvMemoryStream aStream(aPass.getArray(), aPass.getLength(), StreamMode::READ);
Graphic aGraphic;
if(ERRCODE_NONE == GraphicFilter::GetGraphicFilter().ImportGraphic(
aGraphic,
u"",
aStream))
{
extractFromGraphic(aGraphic, aNewTarget, aViewBox, aBitmapEx);
}
}
}
else if(!maUrl.isEmpty())
{
const OUString& rPath = getDocument().getAbsolutePath();
OUString aAbsUrl;
try {
aAbsUrl = rtl::Uri::convertRelToAbs(rPath, maUrl);
} catch (rtl::MalformedUriException & e) {
SAL_WARN(
"svg",
"caught rtl::MalformedUriException \""
<< e.getMessage() << "\"");
}
if (!aAbsUrl.isEmpty() && rPath != aAbsUrl)
{
SvFileStream aStream(aAbsUrl, StreamMode::STD_READ);
Graphic aGraphic;
if(ERRCODE_NONE == GraphicFilter::GetGraphicFilter().ImportGraphic(
aGraphic,
aAbsUrl,
aStream))
{
extractFromGraphic(aGraphic, aNewTarget, aViewBox, aBitmapEx);
}
}
}
else if(!maXLink.isEmpty())
{
const SvgNode* pXLink = getDocument().findSvgNodeById(maXLink);
if(pXLink && Display::None != pXLink->getDisplay())
{
pXLink->decomposeSvgNode(aNewTarget, true);
if(!aNewTarget.empty())
{
aViewBox = aNewTarget.getB2DRange(drawinglayer::geometry::ViewInformation2D());
}
}
}
if(!aBitmapEx.IsEmpty() && 0 != aBitmapEx.GetSizePixel().Width() && 0 != aBitmapEx.GetSizePixel().Height())
{
// calculate centered unit size
const double fAspectRatio = static_cast<double>(aBitmapEx.GetSizePixel().Width()) / static_cast<double>(aBitmapEx.GetSizePixel().Height());
if(basegfx::fTools::equal(fAspectRatio, 0.0))
{
// use unit range
aViewBox = basegfx::B2DRange(0.0, 0.0, 1.0, 1.0);
}
else if(basegfx::fTools::more(fAspectRatio, 0.0))
{
// width bigger height
const double fHalfHeight((1.0 / fAspectRatio) * 0.5);
aViewBox = basegfx::B2DRange(
0.0,
0.5 - fHalfHeight,
1.0,
0.5 + fHalfHeight);
}
else
{
// height bigger width
const double fHalfWidth(fAspectRatio * 0.5);
aViewBox = basegfx::B2DRange(
0.5 - fHalfWidth,
0.0,
0.5 + fHalfWidth,
1.0);
}
// create content from created bitmap, use calculated unit range size
// as transformation to map the picture data correctly
aNewTarget.resize(1);
aNewTarget[0] = new drawinglayer::primitive2d::BitmapPrimitive2D(
VCLUnoHelper::CreateVCLXBitmap(aBitmapEx),
basegfx::utils::createScaleTranslateB2DHomMatrix(
aViewBox.getRange(),
aViewBox.getMinimum()));
}
if(aNewTarget.empty())
return;
if(aTarget.equal(aViewBox))
{
// just add to rTarget
rTarget.append(aNewTarget);
}
else
{
// create mapping
const SvgAspectRatio& rRatio = maSvgAspectRatio;
// even when ratio is not set, use the defaults
// let mapping be created from SvgAspectRatio
const basegfx::B2DHomMatrix aEmbeddingTransform(rRatio.createMapping(aTarget, aViewBox));
if(!aEmbeddingTransform.isIdentity())
{
const drawinglayer::primitive2d::Primitive2DReference xRef(
new drawinglayer::primitive2d::TransformPrimitive2D(
aEmbeddingTransform,
std::move(aNewTarget)));
aNewTarget = drawinglayer::primitive2d::Primitive2DContainer { xRef };
}
if(!rRatio.isMeetOrSlice())
{
// need to embed in MaskPrimitive2D to ensure clipping
const drawinglayer::primitive2d::Primitive2DReference xMask(
new drawinglayer::primitive2d::MaskPrimitive2D(
basegfx::B2DPolyPolygon(
basegfx::utils::createPolygonFromRect(aTarget)),
std::move(aNewTarget)));
aNewTarget = drawinglayer::primitive2d::Primitive2DContainer { xMask };
}
// embed and add to rTarget, take local extra-transform into account
pStyle->add_postProcess(rTarget, std::move(aNewTarget), getTransform());
}
}
} // end of namespace svgio::svgreader
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
