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
|
/* -*- 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 <svgmasknode.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/primitive2d/transparenceprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
namespace svgio
{
namespace svgreader
{
SvgMaskNode::SvgMaskNode(
SvgDocument& rDocument,
SvgNode* pParent)
: SvgNode(SVGTokenMask, rDocument, pParent),
maSvgStyleAttributes(*this),
maX(SvgNumber(-10.0, Unit_percent, true)),
maY(SvgNumber(-10.0, Unit_percent, true)),
maWidth(SvgNumber(120.0, Unit_percent, true)),
maHeight(SvgNumber(120.0, Unit_percent, true)),
maMaskUnits(objectBoundingBox),
maMaskContentUnits(userSpaceOnUse)
{
}
SvgMaskNode::~SvgMaskNode()
{
}
const SvgStyleAttributes* SvgMaskNode::getSvgStyleAttributes() const
{
return &maSvgStyleAttributes;
}
void SvgMaskNode::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 SVGTokenStyle:
{
readLocalCssStyle(aContent);
break;
}
case SVGTokenX:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
maX = aNum;
}
break;
}
case SVGTokenY:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
maY = aNum;
}
break;
}
case SVGTokenWidth:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
if(aNum.isPositive())
{
maWidth = aNum;
}
}
break;
}
case SVGTokenHeight:
{
SvgNumber aNum;
if(readSingleNumber(aContent, aNum))
{
if(aNum.isPositive())
{
maHeight = aNum;
}
}
break;
}
case SVGTokenTransform:
{
const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
if(!aMatrix.isIdentity())
{
setTransform(&aMatrix);
}
break;
}
case SVGTokenMaskUnits:
{
if(!aContent.isEmpty())
{
if(aContent.match(commonStrings::aStrUserSpaceOnUse))
{
setMaskUnits(userSpaceOnUse);
}
else if(aContent.match(commonStrings::aStrObjectBoundingBox))
{
setMaskUnits(objectBoundingBox);
}
}
break;
}
case SVGTokenMaskContentUnits:
{
if(!aContent.isEmpty())
{
if(aContent.match(commonStrings::aStrUserSpaceOnUse))
{
setMaskContentUnits(userSpaceOnUse);
}
else if(aContent.match(commonStrings::aStrObjectBoundingBox))
{
setMaskContentUnits(objectBoundingBox);
}
}
break;
}
default:
{
break;
}
}
}
void SvgMaskNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool bReferenced) const
{
drawinglayer::primitive2d::Primitive2DContainer aNewTarget;
// decompose children
SvgNode::decomposeSvgNode(aNewTarget, bReferenced);
if(aNewTarget.empty())
return;
if(getTransform())
{
// create embedding group element with transformation
const drawinglayer::primitive2d::Primitive2DReference xRef(
new drawinglayer::primitive2d::TransformPrimitive2D(
*getTransform(),
aNewTarget));
aNewTarget = drawinglayer::primitive2d::Primitive2DContainer { xRef };
}
// append to current target
rTarget.append(aNewTarget);
}
void SvgMaskNode::apply(
drawinglayer::primitive2d::Primitive2DContainer& rTarget,
const basegfx::B2DHomMatrix* pTransform) const
{
if(!(!rTarget.empty() && Display_none != getDisplay()))
return;
drawinglayer::primitive2d::Primitive2DContainer aMaskTarget;
// get mask definition as primitives
decomposeSvgNode(aMaskTarget, true);
if(!aMaskTarget.empty())
{
// get range of content to be masked
const basegfx::B2DRange aContentRange(
rTarget.getB2DRange(
drawinglayer::geometry::ViewInformation2D()));
const double fContentWidth(aContentRange.getWidth());
const double fContentHeight(aContentRange.getHeight());
if(fContentWidth > 0.0 && fContentHeight > 0.0)
{
// create OffscreenBufferRange
basegfx::B2DRange aOffscreenBufferRange;
if(objectBoundingBox == maMaskUnits)
{
// fractions or percentages of the bounding box of the element to which the mask is applied
const double fX(Unit_percent == getX().getUnit() ? getX().getNumber() * 0.01 : getX().getNumber());
const double fY(Unit_percent == getY().getUnit() ? getY().getNumber() * 0.01 : getY().getNumber());
const double fW(Unit_percent == getWidth().getUnit() ? getWidth().getNumber() * 0.01 : getWidth().getNumber());
const double fH(Unit_percent == getHeight().getUnit() ? getHeight().getNumber() * 0.01 : getHeight().getNumber());
aOffscreenBufferRange = basegfx::B2DRange(
aContentRange.getMinX() + (fX * fContentWidth),
aContentRange.getMinY() + (fY * fContentHeight),
aContentRange.getMinX() + ((fX + fW) * fContentWidth),
aContentRange.getMinY() + ((fY + fH) * fContentHeight));
}
else
{
const double fX(getX().isSet() ? getX().solve(*this, xcoordinate) : 0.0);
const double fY(getY().isSet() ? getY().solve(*this, ycoordinate) : 0.0);
aOffscreenBufferRange = basegfx::B2DRange(
fX,
fY,
fX + (getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : 0.0),
fY + (getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : 0.0));
}
if(objectBoundingBox == maMaskContentUnits)
{
// mask is object-relative, embed in content transformation
const drawinglayer::primitive2d::Primitive2DReference xTransform(
new drawinglayer::primitive2d::TransformPrimitive2D(
basegfx::utils::createScaleTranslateB2DHomMatrix(
aContentRange.getRange(),
aContentRange.getMinimum()),
aMaskTarget));
aMaskTarget = drawinglayer::primitive2d::Primitive2DContainer { xTransform };
}
else // userSpaceOnUse
{
// #i124852#
if(pTransform)
{
const drawinglayer::primitive2d::Primitive2DReference xTransform(
new drawinglayer::primitive2d::TransformPrimitive2D(
*pTransform,
aMaskTarget));
aMaskTarget = drawinglayer::primitive2d::Primitive2DContainer { xTransform };
}
}
// embed content to a ModifiedColorPrimitive2D since the definitions
// how content is used as alpha is special for Svg
{
const drawinglayer::primitive2d::Primitive2DReference xInverseMask(
new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
aMaskTarget,
basegfx::BColorModifierSharedPtr(
new basegfx::BColorModifier_luminance_to_alpha())));
aMaskTarget = drawinglayer::primitive2d::Primitive2DContainer { xInverseMask };
}
// prepare new content
drawinglayer::primitive2d::Primitive2DReference xNewContent(
new drawinglayer::primitive2d::TransparencePrimitive2D(
rTarget,
aMaskTarget));
// output up to now is defined by aContentRange and mask is oriented
// relative to it. It is possible that aOffscreenBufferRange defines
// a smaller area. In that case, embed to a mask primitive
if(!aOffscreenBufferRange.isInside(aContentRange))
{
xNewContent = new drawinglayer::primitive2d::MaskPrimitive2D(
basegfx::B2DPolyPolygon(
basegfx::utils::createPolygonFromRect(
aOffscreenBufferRange)),
drawinglayer::primitive2d::Primitive2DContainer { xNewContent });
}
// redefine target. Use TransparencePrimitive2D with created mask
// geometry
rTarget = drawinglayer::primitive2d::Primitive2DContainer { xNewContent };
}
else
{
// content is geometrically empty
rTarget.clear();
}
}
else
{
// An empty clipping path will completely clip away the element that had
// the clip-path property applied. (Svg spec)
rTarget.clear();
}
}
} // end of namespace svgreader
} // end of namespace svgio
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
