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gradtrns.cxx
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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
21#include "gradtrns.hxx"
22#include <svx/svdobj.hxx>
23#include <basegfx/range/b2drange.hxx>
24#include <basegfx/matrix/b2dhommatrix.hxx>
25#include <basegfx/matrix/b2dhommatrixtools.hxx>
26#include <tools/helpers.hxx>
27#include <vcl/canvastools.hxx>
28
29
30void GradTransformer::GradToVec(GradTransGradient const & rG, GradTransVector& rV, const SdrObject* pObj)
31{
32 // handle start color
33 rV.aCol1 = rG.aGradient.GetStartColor();
34 if(100 != rG.aGradient.GetStartIntens())
35 {
36 const double fFact(static_cast<double>(rG.aGradient.GetStartIntens()) / 100.0);
37 rV.aCol1 = Color(rV.aCol1.getBColor() * fFact);
38 }
39
40 // handle end color
41 rV.aCol2 = rG.aGradient.GetEndColor();
42 if(100 != rG.aGradient.GetEndIntens())
43 {
44 const double fFact(static_cast<double>(rG.aGradient.GetEndIntens()) / 100.0);
45 rV.aCol2 = Color(rV.aCol2.getBColor() * fFact);
46 }
47
48 // calc the basic positions
49 const tools::Rectangle aObjectSnapRectangle(pObj->GetSnapRect());
50 const basegfx::B2DRange aRange = vcl::unotools::b2DRectangleFromRectangle(aObjectSnapRectangle);
51 const basegfx::B2DPoint aCenter(aRange.getCenter());
52 basegfx::B2DPoint aStartPos, aEndPos;
53
54 switch(rG.aGradient.GetGradientStyle())
55 {
56 case css::awt::GradientStyle_LINEAR :
57 {
58 aStartPos = basegfx::B2DPoint(aCenter.getX(), aRange.getMinY());
59 aEndPos = basegfx::B2DPoint(aCenter.getX(), aRange.getMaximum().getY());
60
61 if(rG.aGradient.GetBorder())
62 {
63 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
64 const double fLen = (aFullVec.getLength() * (100.0 - static_cast<double>(rG.aGradient.GetBorder()))) / 100.0;
65 aFullVec.normalize();
66 aStartPos = aEndPos + (aFullVec * fLen);
67 }
68
69 if(rG.aGradient.GetAngle())
70 {
71 const double fAngle = toRadians(rG.aGradient.GetAngle());
72 const basegfx::B2DHomMatrix aTransformation(basegfx::utils::createRotateAroundPoint(aCenter, -fAngle));
73
74 aStartPos *= aTransformation;
75 aEndPos *= aTransformation;
76 }
77 break;
78 }
79 case css::awt::GradientStyle_AXIAL :
80 {
81 aStartPos = aCenter;
82 aEndPos = basegfx::B2DPoint(aCenter.getX(), aRange.getMaximum().getY());
83
84 if(rG.aGradient.GetBorder())
85 {
86 basegfx::B2DVector aFullVec(aEndPos - aStartPos);
87 const double fLen = (aFullVec.getLength() * (100.0 - static_cast<double>(rG.aGradient.GetBorder()))) / 100.0;
88 aFullVec.normalize();
89 aEndPos = aStartPos + (aFullVec * fLen);
90 }
91
92 if(rG.aGradient.GetAngle())
93 {
94 const double fAngle = toRadians(rG.aGradient.GetAngle());
95 const basegfx::B2DHomMatrix aTransformation(basegfx::utils::createRotateAroundPoint(aCenter, -fAngle));
96
97 aStartPos *= aTransformation;
98 aEndPos *= aTransformation;
99 }
100 break;
101 }
102 case css::awt::GradientStyle_RADIAL :
103 case css::awt::GradientStyle_SQUARE :
104 {
105 aStartPos = basegfx::B2DPoint(aRange.getMinX(), aRange.getMaximum().getY());
106 aEndPos = basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY());
107
108 if(rG.aGradient.GetBorder())
109 {
110 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
111 const double fLen = (aFullVec.getLength() * (100.0 - static_cast<double>(rG.aGradient.GetBorder()))) / 100.0;
112 aFullVec.normalize();
113 aStartPos = aEndPos + (aFullVec * fLen);
114 }
115
116 if(rG.aGradient.GetAngle())
117 {
118 const double fAngle = toRadians(rG.aGradient.GetAngle());
119 const basegfx::B2DHomMatrix aTransformation(basegfx::utils::createRotateAroundPoint(aEndPos, -fAngle));
120
121 aStartPos *= aTransformation;
122 aEndPos *= aTransformation;
123 }
124
125 if(rG.aGradient.GetXOffset() || rG.aGradient.GetYOffset())
126 {
127 basegfx::B2DPoint aOffset(
128 (aRange.getWidth() * rG.aGradient.GetXOffset()) / 100.0,
129 (aRange.getHeight() * rG.aGradient.GetYOffset()) / 100.0);
130
131 aStartPos += aOffset;
132 aEndPos += aOffset;
133 }
134
135 break;
136 }
137 case css::awt::GradientStyle_ELLIPTICAL :
138 case css::awt::GradientStyle_RECT :
139 {
140 aStartPos = basegfx::B2DPoint(aRange.getMinX(), aCenter.getY());
141 aEndPos = basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY());
142
143 if(rG.aGradient.GetBorder())
144 {
145 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
146 const double fLen = (aFullVec.getLength() * (100.0 - static_cast<double>(rG.aGradient.GetBorder()))) / 100.0;
147 aFullVec.normalize();
148 aStartPos = aEndPos + (aFullVec * fLen);
149 }
150
151 if(rG.aGradient.GetAngle())
152 {
153 const double fAngle = toRadians(rG.aGradient.GetAngle());
154 const basegfx::B2DHomMatrix aTransformation(basegfx::utils::createRotateAroundPoint(aEndPos, -fAngle));
155
156 aStartPos *= aTransformation;
157 aEndPos *= aTransformation;
158 }
159
160 if(rG.aGradient.GetXOffset() || rG.aGradient.GetYOffset())
161 {
162 basegfx::B2DPoint aOffset(
163 (aRange.getWidth() * rG.aGradient.GetXOffset()) / 100.0,
164 (aRange.getHeight() * rG.aGradient.GetYOffset()) / 100.0);
165
166 aStartPos += aOffset;
167 aEndPos += aOffset;
168 }
169
170 break;
171 }
172 default:
173 break;
174 }
175
176 // set values for vector positions now
177 rV.maPositionA = aStartPos;
178 rV.maPositionB = aEndPos;
179}
180
181
182void GradTransformer::VecToGrad(GradTransVector const & rV, GradTransGradient& rG, GradTransGradient const & rGOld, const SdrObject* pObj,
183 bool bMoveSingle, bool bMoveFirst)
184{
185 // fill old gradient to new gradient to have a base
186 rG = rGOld;
187
188 // handle color changes
189 if(rV.aCol1 != rGOld.aGradient.GetStartColor())
190 {
191 rG.aGradient.SetStartColor(rV.aCol1);
192 rG.aGradient.SetStartIntens(100);
193 }
194 if(rV.aCol2 != rGOld.aGradient.GetEndColor())
195 {
196 rG.aGradient.SetEndColor(rV.aCol2);
197 rG.aGradient.SetEndIntens(100);
198 }
199
200 // calc the basic positions
201 const tools::Rectangle aObjectSnapRectangle(pObj->GetSnapRect());
202 const basegfx::B2DRange aRange = vcl::unotools::b2DRectangleFromRectangle(aObjectSnapRectangle);
203 const basegfx::B2DPoint aCenter(aRange.getCenter());
204 basegfx::B2DPoint aStartPos(rV.maPositionA);
205 basegfx::B2DPoint aEndPos(rV.maPositionB);
206
207 switch(rG.aGradient.GetGradientStyle())
208 {
209 case css::awt::GradientStyle_LINEAR :
210 {
211 if(!bMoveSingle || !bMoveFirst)
212 {
213 basegfx::B2DVector aFullVec(aEndPos - aStartPos);
214
215 if(bMoveSingle)
216 {
217 aFullVec = aEndPos - aCenter;
218 }
219
220 aFullVec.normalize();
221
222 double fNewFullAngle(basegfx::rad2deg(atan2(aFullVec.getY(), aFullVec.getX())));
223 fNewFullAngle *= -10.0;
224 fNewFullAngle += 900.0;
225
226 // clip
227 while(fNewFullAngle < 0.0)
228 {
229 fNewFullAngle += 3600.0;
230 }
231
232 while(fNewFullAngle >= 3600.0)
233 {
234 fNewFullAngle -= 3600.0;
235 }
236
237 // to int and set
238 Degree10 nNewAngle( FRound(fNewFullAngle));
239
240 if(nNewAngle != rGOld.aGradient.GetAngle())
241 {
242 rG.aGradient.SetAngle(nNewAngle);
243 }
244 }
245
246 if(!bMoveSingle || bMoveFirst)
247 {
248 const basegfx::B2DVector aFullVec(aEndPos - aStartPos);
249 const basegfx::B2DPoint aBottomLeft(aRange.getMinX(), aRange.getMaximum().getY());
250 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
251 const basegfx::B2DVector aOldVec(aBottomLeft - aTopLeft);
252 const double fFullLen(aFullVec.getLength());
253 const double fOldLen(aOldVec.getLength());
254 const double fNewBorder((fFullLen * 100.0) / fOldLen);
255 sal_Int32 nNewBorder(100 - FRound(fNewBorder));
256
257 // clip
258 if(nNewBorder < 0)
259 {
260 nNewBorder = 0;
261 }
262
263 if(nNewBorder > 100)
264 {
265 nNewBorder = 100;
266 }
267
268 // set
269 if(nNewBorder != rG.aGradient.GetBorder())
270 {
271 rG.aGradient.SetBorder(static_cast<sal_uInt16>(nNewBorder));
272 }
273 }
274
275 break;
276 }
277 case css::awt::GradientStyle_AXIAL :
278 {
279 if(!bMoveSingle || !bMoveFirst)
280 {
281 basegfx::B2DVector aFullVec(aEndPos - aCenter);
282 const basegfx::B2DVector aOldVec(basegfx::B2DPoint(aCenter.getX(), aRange.getMaximum().getY()) - aCenter);
283 const double fFullLen(aFullVec.getLength());
284 const double fOldLen(aOldVec.getLength());
285 const double fNewBorder((fFullLen * 100.0) / fOldLen);
286 sal_Int32 nNewBorder = 100 - FRound(fNewBorder);
287
288 // clip
289 if(nNewBorder < 0)
290 {
291 nNewBorder = 0;
292 }
293
294 if(nNewBorder > 100)
295 {
296 nNewBorder = 100;
297 }
298
299 // set
300 if(nNewBorder != rG.aGradient.GetBorder())
301 {
302 rG.aGradient.SetBorder(static_cast<sal_uInt16>(nNewBorder));
303 }
304
305 aFullVec.normalize();
306 double fNewFullAngle(basegfx::rad2deg(atan2(aFullVec.getY(), aFullVec.getX())));
307 fNewFullAngle *= -10.0;
308 fNewFullAngle += 900.0;
309
310 // clip
311 while(fNewFullAngle < 0.0)
312 {
313 fNewFullAngle += 3600.0;
314 }
315
316 while(fNewFullAngle >= 3600.0)
317 {
318 fNewFullAngle -= 3600.0;
319 }
320
321 // to int and set
322 const Degree10 nNewAngle(FRound(fNewFullAngle));
323
324 if(nNewAngle != rGOld.aGradient.GetAngle())
325 {
326 rG.aGradient.SetAngle(nNewAngle);
327 }
328 }
329
330 break;
331 }
332 case css::awt::GradientStyle_RADIAL :
333 case css::awt::GradientStyle_SQUARE :
334 {
335 if(!bMoveSingle || !bMoveFirst)
336 {
337 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
338 const basegfx::B2DPoint aOffset(aEndPos - aTopLeft);
339 sal_Int32 nNewXOffset(FRound((aOffset.getX() * 100.0) / aRange.getWidth()));
340 sal_Int32 nNewYOffset(FRound((aOffset.getY() * 100.0) / aRange.getHeight()));
341
342 // clip
343 if(nNewXOffset < 0)
344 {
345 nNewXOffset = 0;
346 }
347
348 if(nNewXOffset > 100)
349 {
350 nNewXOffset = 100;
351 }
352
353 if(nNewYOffset < 0)
354 {
355 nNewYOffset = 0;
356 }
357
358 if(nNewYOffset > 100)
359 {
360 nNewYOffset = 100;
361 }
362
363 rG.aGradient.SetXOffset(static_cast<sal_uInt16>(nNewXOffset));
364 rG.aGradient.SetYOffset(static_cast<sal_uInt16>(nNewYOffset));
365
366 aStartPos -= aOffset;
367 aEndPos -= aOffset;
368 }
369
370 if(!bMoveSingle || bMoveFirst)
371 {
372 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
373 const basegfx::B2DPoint aBottomLeft(aRange.getMinX(), aRange.getMaximum().getY());
374 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
375 const basegfx::B2DVector aOldVec(aBottomLeft - aTopLeft);
376 const double fFullLen(aFullVec.getLength());
377 const double fOldLen(aOldVec.getLength());
378 const double fNewBorder((fFullLen * 100.0) / fOldLen);
379 sal_Int32 nNewBorder(100 - FRound(fNewBorder));
380
381 // clip
382 if(nNewBorder < 0)
383 {
384 nNewBorder = 0;
385 }
386
387 if(nNewBorder > 100)
388 {
389 nNewBorder = 100;
390 }
391
392 // set
393 if(nNewBorder != rG.aGradient.GetBorder())
394 {
395 rG.aGradient.SetBorder(static_cast<sal_uInt16>(nNewBorder));
396 }
397
398 // angle is not definitely necessary for these modes, but it makes
399 // controlling more fun for the user
400 aFullVec.normalize();
401 double fNewFullAngle(basegfx::rad2deg(atan2(aFullVec.getY(), aFullVec.getX())));
402 fNewFullAngle *= -10.0;
403 fNewFullAngle += 900.0;
404
405 // clip
406 while(fNewFullAngle < 0.0)
407 {
408 fNewFullAngle += 3600.0;
409 }
410
411 while(fNewFullAngle >= 3600.0)
412 {
413 fNewFullAngle -= 3600.0;
414 }
415
416 // to int and set
417 const Degree10 nNewAngle(FRound(fNewFullAngle));
418
419 if(nNewAngle != rGOld.aGradient.GetAngle())
420 {
421 rG.aGradient.SetAngle(nNewAngle);
422 }
423 }
424
425 break;
426 }
427 case css::awt::GradientStyle_ELLIPTICAL :
428 case css::awt::GradientStyle_RECT :
429 {
430 if(!bMoveSingle || !bMoveFirst)
431 {
432 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
433 const basegfx::B2DPoint aOffset(aEndPos - aTopLeft);
434 sal_Int32 nNewXOffset(FRound((aOffset.getX() * 100.0) / aRange.getWidth()));
435 sal_Int32 nNewYOffset(FRound((aOffset.getY() * 100.0) / aRange.getHeight()));
436
437 // clip
438 if(nNewXOffset < 0)
439 {
440 nNewXOffset = 0;
441 }
442
443 if(nNewXOffset > 100)
444 {
445 nNewXOffset = 100;
446 }
447
448 if(nNewYOffset < 0)
449 {
450 nNewYOffset = 0;
451 }
452
453 if(nNewYOffset > 100)
454 {
455 nNewYOffset = 100;
456 }
457
458 rG.aGradient.SetXOffset(static_cast<sal_uInt16>(nNewXOffset));
459 rG.aGradient.SetYOffset(static_cast<sal_uInt16>(nNewYOffset));
460
461 aStartPos -= aOffset;
462 aEndPos -= aOffset;
463 }
464
465 if(!bMoveSingle || bMoveFirst)
466 {
467 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
468 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
469 const basegfx::B2DPoint aCenterLeft(aRange.getMinX(), aCenter.getY());
470 const basegfx::B2DVector aOldVec(aCenterLeft - aTopLeft);
471 const double fFullLen(aFullVec.getLength());
472 const double fOldLen(aOldVec.getLength());
473 const double fNewBorder((fFullLen * 100.0) / fOldLen);
474 sal_Int32 nNewBorder(100 - FRound(fNewBorder));
475
476 // clip
477 if(nNewBorder < 0)
478 {
479 nNewBorder = 0;
480 }
481
482 if(nNewBorder > 100)
483 {
484 nNewBorder = 100;
485 }
486
487 // set
488 if(nNewBorder != rG.aGradient.GetBorder())
489 {
490 rG.aGradient.SetBorder(static_cast<sal_uInt16>(nNewBorder));
491 }
492
493 // angle is not definitely necessary for these modes, but it makes
494 // controlling more fun for the user
495 aFullVec.normalize();
496 double fNewFullAngle(basegfx::rad2deg(atan2(aFullVec.getY(), aFullVec.getX())));
497 fNewFullAngle *= -10.0;
498 fNewFullAngle += 900.0;
499
500 // clip
501 while(fNewFullAngle < 0.0)
502 {
503 fNewFullAngle += 3600.0;
504 }
505
506 while(fNewFullAngle >= 3600.0)
507 {
508 fNewFullAngle -= 3600.0;
509 }
510
511 // to int and set
512 const Degree10 nNewAngle(FRound(fNewFullAngle));
513
514 if(nNewAngle != rGOld.aGradient.GetAngle())
515 {
516 rG.aGradient.SetAngle(nNewAngle);
517 }
518 }
519
520 break;
521 }
522 default:
523 break;
524 }
525}
526
527/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Color::getBColor
basegfx::BColor getBColor() const
GradTransGradient::aGradient
XGradient aGradient
Definition: gradtrns.hxx:40
GradTransVector::maPositionA
basegfx::B2DPoint maPositionA
Definition: gradtrns.hxx:31
GradTransVector::maPositionB
basegfx::B2DPoint maPositionB
Definition: gradtrns.hxx:32
SdrObject
Abstract DrawObject.
Definition: svdobj.hxx:261
SdrObject::GetSnapRect
virtual const tools::Rectangle & GetSnapRect() const
Definition: svdobj.cxx:1665
XGradient::GetEndColor
const Color & GetEndColor() const
Definition: xgrad.hxx:70
XGradient::GetYOffset
sal_uInt16 GetYOffset() const
Definition: xgrad.hxx:74
XGradient::SetEndIntens
void SetEndIntens(sal_uInt16 nNewIntens)
Definition: xgrad.hxx:65
XGradient::GetStartIntens
sal_uInt16 GetStartIntens() const
Definition: xgrad.hxx:75
XGradient::GetGradientStyle
css::awt::GradientStyle GetGradientStyle() const
Definition: xgrad.hxx:68
XGradient::SetBorder
void SetBorder(sal_uInt16 nNewBorder)
Definition: xgrad.hxx:61
XGradient::GetStartColor
const Color & GetStartColor() const
Definition: xgrad.hxx:69
XGradient::GetBorder
sal_uInt16 GetBorder() const
Definition: xgrad.hxx:72
XGradient::GetEndIntens
sal_uInt16 GetEndIntens() const
Definition: xgrad.hxx:76
XGradient::GetAngle
Degree10 GetAngle() const
Definition: xgrad.hxx:71
XGradient::SetStartColor
void SetStartColor(const Color &rColor)
Definition: xgrad.hxx:58
XGradient::SetXOffset
void SetXOffset(sal_uInt16 nNewOffset)
Definition: xgrad.hxx:62
XGradient::SetEndColor
void SetEndColor(const Color &rColor)
Definition: xgrad.hxx:59
XGradient::SetAngle
void SetAngle(Degree10 nNewAngle)
Definition: xgrad.hxx:60
XGradient::SetStartIntens
void SetStartIntens(sal_uInt16 nNewIntens)
Definition: xgrad.hxx:64
XGradient::GetXOffset
sal_uInt16 GetXOffset() const
Definition: xgrad.hxx:73
XGradient::SetYOffset
void SetYOffset(sal_uInt16 nNewOffset)
Definition: xgrad.hxx:63
basegfx::B2DRange::getMaximum
B2DPoint getMaximum() const
basegfx::B2DRange::getCenter
B2DPoint getCenter() const
basegfx::B2DVector::normalize
B2DVector & normalize()
basegfx::B2DVector::getLength
double getLength() const
basegfx::Range2D::getWidth
TYPE getWidth() const
basegfx::Range2D::getMinX
TYPE getMinX() const
basegfx::Range2D::getMinY
TYPE getMinY() const
basegfx::Range2D::getHeight
TYPE getHeight() const
basegfx::Tuple2D::getX
TYPE getX() const
basegfx::Tuple2D::getY
TYPE getY() const
toRadians
double toRadians(D x)
FRound
tools::Long FRound(double fVal)
basegfx::utils::createRotateAroundPoint
B2DHomMatrix createRotateAroundPoint(double fPointX, double fPointY, double fRadiant)
basegfx::rad2deg
constexpr double rad2deg(double v)
vcl::unotools::b2DRectangleFromRectangle
basegfx::B2DRange b2DRectangleFromRectangle(const ::tools::Rectangle &rRect)
GradTransformer::GradToVec
static void GradToVec(GradTransGradient const &rG, GradTransVector &rV, const SdrObject *pObj)
Definition: gradtrns.cxx:30
GradTransformer::VecToGrad
static void VecToGrad(GradTransVector const &rV, GradTransGradient &rG, GradTransGradient const &rGOld, const SdrObject *pObj, bool bMoveSingle, bool bMoveFirst)
Definition: gradtrns.cxx:182
o3tl::strong_int
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