xref: /trunk/main/svx/source/svdraw/gradtrns.cxx (revision 1ecadb572e7010ff3b3382ad9bf179dbc6efadbb) 
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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_svx.hxx"
30 
31 #include "gradtrns.hxx"
32 #include <svx/svdobj.hxx>
33 #include <basegfx/range/b2drange.hxx>
34 #include <basegfx/matrix/b2dhommatrix.hxx>
35 #include <basegfx/matrix/b2dhommatrixtools.hxx>
36 #include <vcl/salbtype.hxx>     // FRound
37 
38 //////////////////////////////////////////////////////////////////////////////
39 
40 void GradTransformer::GradToVec(GradTransGradient& rG, GradTransVector& rV, const SdrObject* pObj)
41 {
42     // handle start color
43     rV.aCol1 = rG.aGradient.GetStartColor();
44     if(100 != rG.aGradient.GetStartIntens())
45     {
46         const double fFact((double)rG.aGradient.GetStartIntens() / 100.0);
47         rV.aCol1 = Color(rV.aCol1.getBColor() * fFact);
48     }
49 
50     // handle end color
51     rV.aCol2 = rG.aGradient.GetEndColor();
52     if(100 != rG.aGradient.GetEndIntens())
53     {
54         const double fFact((double)rG.aGradient.GetEndIntens() / 100.0);
55         rV.aCol2 = Color(rV.aCol2.getBColor() * fFact);
56     }
57 
58     // calc the basic positions
59     const Rectangle aObjectSnapRectangle(pObj->GetSnapRect());
60     const basegfx::B2DRange aRange(aObjectSnapRectangle.Left(), aObjectSnapRectangle.Top(), aObjectSnapRectangle.Right(), aObjectSnapRectangle.Bottom());
61     const basegfx::B2DPoint aCenter(aRange.getCenter());
62     basegfx::B2DPoint aStartPos, aEndPos;
63 
64     switch(rG.aGradient.GetGradientStyle())
65     {
66         case XGRAD_LINEAR :
67         {
68             aStartPos = basegfx::B2DPoint(aCenter.getX(), aRange.getMinY());
69             aEndPos = basegfx::B2DPoint(aCenter.getX(), aRange.getMaximum().getY());
70 
71             if(rG.aGradient.GetBorder())
72             {
73                 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
74                 const double fLen = (aFullVec.getLength() * (100.0 - (double)rG.aGradient.GetBorder())) / 100.0;
75                 aFullVec.normalize();
76                 aStartPos = aEndPos + (aFullVec * fLen);
77             }
78 
79             if(rG.aGradient.GetAngle())
80             {
81                 const double fAngle = (double)rG.aGradient.GetAngle() * (F_PI180 / 10.0);
82                 const basegfx::B2DHomMatrix aTransformation(basegfx::tools::createRotateAroundPoint(aCenter, -fAngle));
83 
84                 aStartPos *= aTransformation;
85                 aEndPos *= aTransformation;
86             }
87             break;
88         }
89         case XGRAD_AXIAL :
90         {
91             aStartPos = aCenter;
92             aEndPos = basegfx::B2DPoint(aCenter.getX(), aRange.getMaximum().getY());
93 
94             if(rG.aGradient.GetBorder())
95             {
96                 basegfx::B2DVector aFullVec(aEndPos - aStartPos);
97                 const double fLen = (aFullVec.getLength() * (100.0 - (double)rG.aGradient.GetBorder())) / 100.0;
98                 aFullVec.normalize();
99                 aEndPos = aStartPos + (aFullVec * fLen);
100             }
101 
102             if(rG.aGradient.GetAngle())
103             {
104                 const double fAngle = (double)rG.aGradient.GetAngle() * (F_PI180 / 10.0);
105                 const basegfx::B2DHomMatrix aTransformation(basegfx::tools::createRotateAroundPoint(aCenter, -fAngle));
106 
107                 aStartPos *= aTransformation;
108                 aEndPos *= aTransformation;
109             }
110             break;
111         }
112         case XGRAD_RADIAL :
113         case XGRAD_SQUARE :
114         {
115             aStartPos = basegfx::B2DPoint(aRange.getMinX(), aRange.getMaximum().getY());
116             aEndPos = basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY());
117 
118             if(rG.aGradient.GetBorder())
119             {
120                 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
121                 const double fLen = (aFullVec.getLength() * (100.0 - (double)rG.aGradient.GetBorder())) / 100.0;
122                 aFullVec.normalize();
123                 aStartPos = aEndPos + (aFullVec * fLen);
124             }
125 
126             if(rG.aGradient.GetAngle())
127             {
128                 const double fAngle = (double)rG.aGradient.GetAngle() * (F_PI180 / 10.0);
129                 const basegfx::B2DHomMatrix aTransformation(basegfx::tools::createRotateAroundPoint(aEndPos, -fAngle));
130 
131                 aStartPos *= aTransformation;
132                 aEndPos *= aTransformation;
133             }
134 
135             if(rG.aGradient.GetXOffset() || rG.aGradient.GetYOffset())
136             {
137                 basegfx::B2DPoint aOffset(
138                     (aRange.getWidth() * rG.aGradient.GetXOffset()) / 100.0,
139                     (aRange.getHeight() * rG.aGradient.GetYOffset()) / 100.0);
140 
141                 aStartPos += aOffset;
142                 aEndPos += aOffset;
143             }
144 
145             break;
146         }
147         case XGRAD_ELLIPTICAL :
148         case XGRAD_RECT :
149         {
150             aStartPos = basegfx::B2DPoint(aRange.getMinX(), aCenter.getY());
151             aEndPos = basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY());
152 
153             if(rG.aGradient.GetBorder())
154             {
155                 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
156                 const double fLen = (aFullVec.getLength() * (100.0 - (double)rG.aGradient.GetBorder())) / 100.0;
157                 aFullVec.normalize();
158                 aStartPos = aEndPos + (aFullVec * fLen);
159             }
160 
161             if(rG.aGradient.GetAngle())
162             {
163                 const double fAngle = (double)rG.aGradient.GetAngle() * (F_PI180 / 10.0);
164                 const basegfx::B2DHomMatrix aTransformation(basegfx::tools::createRotateAroundPoint(aEndPos, -fAngle));
165 
166                 aStartPos *= aTransformation;
167                 aEndPos *= aTransformation;
168             }
169 
170             if(rG.aGradient.GetXOffset() || rG.aGradient.GetYOffset())
171             {
172                 basegfx::B2DPoint aOffset(
173                     (aRange.getWidth() * rG.aGradient.GetXOffset()) / 100.0,
174                     (aRange.getHeight() * rG.aGradient.GetYOffset()) / 100.0);
175 
176                 aStartPos += aOffset;
177                 aEndPos += aOffset;
178             }
179 
180             break;
181         }
182     }
183 
184     // set values for vector positions now
185     rV.maPositionA = aStartPos;
186     rV.maPositionB = aEndPos;
187 }
188 
189 //////////////////////////////////////////////////////////////////////////////
190 
191 void GradTransformer::VecToGrad(GradTransVector& rV, GradTransGradient& rG, GradTransGradient& rGOld, const SdrObject* pObj,
192     sal_Bool bMoveSingle, sal_Bool bMoveFirst)
193 {
194     // fill old gradient to new gradient to have a base
195     rG = rGOld;
196 
197     // handle color changes
198     if(rV.aCol1 != rGOld.aGradient.GetStartColor())
199     {
200         rG.aGradient.SetStartColor(rV.aCol1);
201         rG.aGradient.SetStartIntens(100);
202     }
203     if(rV.aCol2 != rGOld.aGradient.GetEndColor())
204     {
205         rG.aGradient.SetEndColor(rV.aCol2);
206         rG.aGradient.SetEndIntens(100);
207     }
208 
209     // calc the basic positions
210     const Rectangle aObjectSnapRectangle(pObj->GetSnapRect());
211     const basegfx::B2DRange aRange(aObjectSnapRectangle.Left(), aObjectSnapRectangle.Top(), aObjectSnapRectangle.Right(), aObjectSnapRectangle.Bottom());
212     const basegfx::B2DPoint aCenter(aRange.getCenter());
213     basegfx::B2DPoint aStartPos(rV.maPositionA);
214     basegfx::B2DPoint aEndPos(rV.maPositionB);
215 
216     switch(rG.aGradient.GetGradientStyle())
217     {
218         case XGRAD_LINEAR :
219         {
220             if(!bMoveSingle || (bMoveSingle && !bMoveFirst))
221             {
222                 basegfx::B2DVector aFullVec(aEndPos - aStartPos);
223 
224                 if(bMoveSingle)
225                 {
226                     aFullVec = aEndPos - aCenter;
227                 }
228 
229                 aFullVec.normalize();
230 
231                 double fNewFullAngle(atan2(aFullVec.getY(), aFullVec.getX()));
232                 fNewFullAngle /= F_PI180;
233                 fNewFullAngle *= -10.0;
234                 fNewFullAngle += 900.0;
235 
236                 // clip
237                 while(fNewFullAngle < 0.0)
238                 {
239                     fNewFullAngle += 3600.0;
240                 }
241 
242                 while(fNewFullAngle >= 3600.0)
243                 {
244                     fNewFullAngle -= 3600.0;
245                 }
246 
247                 // to int and set
248                 sal_Int32 nNewAngle = FRound(fNewFullAngle);
249 
250                 if(nNewAngle != rGOld.aGradient.GetAngle())
251                 {
252                     rG.aGradient.SetAngle(nNewAngle);
253                 }
254             }
255 
256             if(!bMoveSingle || (bMoveSingle && bMoveFirst))
257             {
258                 const basegfx::B2DVector aFullVec(aEndPos - aStartPos);
259                 const basegfx::B2DPoint aBottomLeft(aRange.getMinX(), aRange.getMaximum().getY());
260                 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
261                 const basegfx::B2DVector aOldVec(aBottomLeft - aTopLeft);
262                 const double fFullLen(aFullVec.getLength());
263                 const double fOldLen(aOldVec.getLength());
264                 const double fNewBorder((fFullLen * 100.0) / fOldLen);
265                 sal_Int32 nNewBorder(100L - FRound(fNewBorder));
266 
267                 // clip
268                 if(nNewBorder < 0L)
269                 {
270                     nNewBorder = 0L;
271                 }
272 
273                 if(nNewBorder > 100L)
274                 {
275                     nNewBorder = 100L;
276                 }
277 
278                 // set
279                 if(nNewBorder != rG.aGradient.GetBorder())
280                 {
281                     rG.aGradient.SetBorder((sal_uInt16)nNewBorder);
282                 }
283             }
284 
285             break;
286         }
287         case XGRAD_AXIAL :
288         {
289             if(!bMoveSingle || (bMoveSingle && !bMoveFirst))
290             {
291                 basegfx::B2DVector aFullVec(aEndPos - aCenter);
292                 const basegfx::B2DVector aOldVec(basegfx::B2DPoint(aCenter.getX(), aRange.getMaximum().getY()) - aCenter);
293                 const double fFullLen(aFullVec.getLength());
294                 const double fOldLen(aOldVec.getLength());
295                 const double fNewBorder((fFullLen * 100.0) / fOldLen);
296                 sal_Int32 nNewBorder = 100 - FRound(fNewBorder);
297 
298                 // clip
299                 if(nNewBorder < 0L)
300                 {
301                     nNewBorder = 0L;
302                 }
303 
304                 if(nNewBorder > 100L)
305                 {
306                     nNewBorder = 100L;
307                 }
308 
309                 // set
310                 if(nNewBorder != rG.aGradient.GetBorder())
311                 {
312                     rG.aGradient.SetBorder((sal_uInt16)nNewBorder);
313                 }
314 
315                 aFullVec.normalize();
316                 double fNewFullAngle(atan2(aFullVec.getY(), aFullVec.getX()));
317                 fNewFullAngle /= F_PI180;
318                 fNewFullAngle *= -10.0;
319                 fNewFullAngle += 900.0;
320 
321                 // clip
322                 while(fNewFullAngle < 0.0)
323                 {
324                     fNewFullAngle += 3600.0;
325                 }
326 
327                 while(fNewFullAngle >= 3600.0)
328                 {
329                     fNewFullAngle -= 3600.0;
330                 }
331 
332                 // to int and set
333                 const sal_Int32 nNewAngle(FRound(fNewFullAngle));
334 
335                 if(nNewAngle != rGOld.aGradient.GetAngle())
336                 {
337                     rG.aGradient.SetAngle(nNewAngle);
338                 }
339             }
340 
341             break;
342         }
343         case XGRAD_RADIAL :
344         case XGRAD_SQUARE :
345         {
346             if(!bMoveSingle || (bMoveSingle && !bMoveFirst))
347             {
348                 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
349                 const basegfx::B2DPoint aOffset(aEndPos - aTopLeft);
350                 sal_Int32 nNewXOffset(FRound((aOffset.getX() * 100.0) / aRange.getWidth()));
351                 sal_Int32 nNewYOffset(FRound((aOffset.getY() * 100.0) / aRange.getHeight()));
352 
353                 // clip
354                 if(nNewXOffset < 0L)
355                 {
356                     nNewXOffset = 0L;
357                 }
358 
359                 if(nNewXOffset > 100L)
360                 {
361                     nNewXOffset = 100L;
362                 }
363 
364                 if(nNewYOffset < 0L)
365                 {
366                     nNewYOffset = 0L;
367                 }
368 
369                 if(nNewYOffset > 100L)
370                 {
371                     nNewYOffset = 100L;
372                 }
373 
374                 rG.aGradient.SetXOffset((sal_uInt16)nNewXOffset);
375                 rG.aGradient.SetYOffset((sal_uInt16)nNewYOffset);
376 
377                 aStartPos -= aOffset;
378                 aEndPos -= aOffset;
379             }
380 
381             if(!bMoveSingle || (bMoveSingle && bMoveFirst))
382             {
383                 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
384                 const basegfx::B2DPoint aBottomLeft(aRange.getMinX(), aRange.getMaximum().getY());
385                 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
386                 const basegfx::B2DVector aOldVec(aBottomLeft - aTopLeft);
387                 const double fFullLen(aFullVec.getLength());
388                 const double fOldLen(aOldVec.getLength());
389                 const double fNewBorder((fFullLen * 100.0) / fOldLen);
390                 sal_Int32 nNewBorder(100L - FRound(fNewBorder));
391 
392                 // clip
393                 if(nNewBorder < 0L)
394                 {
395                     nNewBorder = 0L;
396                 }
397 
398                 if(nNewBorder > 100L)
399                 {
400                     nNewBorder = 100L;
401                 }
402 
403                 // set
404                 if(nNewBorder != rG.aGradient.GetBorder())
405                 {
406                     rG.aGradient.SetBorder((sal_uInt16)nNewBorder);
407                 }
408 
409                 // angle is not definitely necessary for these modes, but it makes
410                 // controlling more fun for the user
411                 aFullVec.normalize();
412                 double fNewFullAngle(atan2(aFullVec.getY(), aFullVec.getX()));
413                 fNewFullAngle /= F_PI180;
414                 fNewFullAngle *= -10.0;
415                 fNewFullAngle += 900.0;
416 
417                 // clip
418                 while(fNewFullAngle < 0.0)
419                 {
420                     fNewFullAngle += 3600.0;
421                 }
422 
423                 while(fNewFullAngle >= 3600.0)
424                 {
425                     fNewFullAngle -= 3600.0;
426                 }
427 
428                 // to int and set
429                 const sal_Int32 nNewAngle(FRound(fNewFullAngle));
430 
431                 if(nNewAngle != rGOld.aGradient.GetAngle())
432                 {
433                     rG.aGradient.SetAngle(nNewAngle);
434                 }
435             }
436 
437             break;
438         }
439         case XGRAD_ELLIPTICAL :
440         case XGRAD_RECT :
441         {
442             if(!bMoveSingle || (bMoveSingle && !bMoveFirst))
443             {
444                 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
445                 const basegfx::B2DPoint aOffset(aEndPos - aTopLeft);
446                 sal_Int32 nNewXOffset(FRound((aOffset.getX() * 100.0) / aRange.getWidth()));
447                 sal_Int32 nNewYOffset(FRound((aOffset.getY() * 100.0) / aRange.getHeight()));
448 
449                 // clip
450                 if(nNewXOffset < 0L)
451                 {
452                     nNewXOffset = 0L;
453                 }
454 
455                 if(nNewXOffset > 100L)
456                 {
457                     nNewXOffset = 100L;
458                 }
459 
460                 if(nNewYOffset < 0L)
461                 {
462                     nNewYOffset = 0L;
463                 }
464 
465                 if(nNewYOffset > 100L)
466                 {
467                     nNewYOffset = 100L;
468                 }
469 
470                 rG.aGradient.SetXOffset((sal_uInt16)nNewXOffset);
471                 rG.aGradient.SetYOffset((sal_uInt16)nNewYOffset);
472 
473                 aStartPos -= aOffset;
474                 aEndPos -= aOffset;
475             }
476 
477             if(!bMoveSingle || (bMoveSingle && bMoveFirst))
478             {
479                 basegfx::B2DVector aFullVec(aStartPos - aEndPos);
480                 const basegfx::B2DPoint aTopLeft(aRange.getMinX(), aRange.getMinY());
481                 const basegfx::B2DPoint aCenterLeft(aRange.getMinX(), aRange.getHeight());
482                 const basegfx::B2DVector aOldVec(aCenterLeft - aTopLeft);
483                 const double fFullLen(aFullVec.getLength());
484                 const double fOldLen(aOldVec.getLength());
485                 const double fNewBorder((fFullLen * 100.0) / fOldLen);
486                 sal_Int32 nNewBorder(100L - FRound(fNewBorder));
487 
488                 // clip
489                 if(nNewBorder < 0L)
490                 {
491                     nNewBorder = 0L;
492                 }
493 
494                 if(nNewBorder > 100L)
495                 {
496                     nNewBorder = 100L;
497                 }
498 
499                 // set
500                 if(nNewBorder != rG.aGradient.GetBorder())
501                 {
502                     rG.aGradient.SetBorder((sal_uInt16)nNewBorder);
503                 }
504 
505                 // angle is not definitely necessary for these modes, but it makes
506                 // controlling more fun for the user
507                 aFullVec.normalize();
508                 double fNewFullAngle(atan2(aFullVec.getY(), aFullVec.getX()));
509                 fNewFullAngle /= F_PI180;
510                 fNewFullAngle *= -10.0;
511                 fNewFullAngle += 900.0;
512 
513                 // clip
514                 while(fNewFullAngle < 0.0)
515                 {
516                     fNewFullAngle += 3600.0;
517                 }
518 
519                 while(fNewFullAngle >= 3600.0)
520                 {
521                     fNewFullAngle -= 3600.0;
522                 }
523 
524                 // to int and set
525                 const sal_Int32 nNewAngle(FRound(fNewFullAngle));
526 
527                 if(nNewAngle != rGOld.aGradient.GetAngle())
528                 {
529                     rG.aGradient.SetAngle(nNewAngle);
530                 }
531             }
532 
533             break;
534         }
535     }
536 }
537 
538 // eof
539