qgridlayoutengine.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtGui module of the Qt Toolkit.-
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17** GNU Lesser General Public License Usage-
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19** General Public License version 3 as published by the Free Software-
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21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
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24**-
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26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
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35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qglobal.h"-
41-
42#include "qgridlayoutengine_p.h"-
43#include "qvarlengtharray.h"-
44-
45#include <QtDebug>-
46#include <QtCore/qmath.h>-
47-
48QT_BEGIN_NAMESPACE-
49-
50template <typename T>-
51static void insertOrRemoveItems(QVector<T> &items, int index, int delta)-
52{-
53 int count = items.count();-
54 if (index < count) {-
55 if (delta > 0) {-
56 items.insert(index, delta, T());-
57 } else if (delta < 0) {-
58 items.remove(index, qMin(-delta, count - index));-
59 }-
60 }-
61}-
62-
63static qreal growthFactorBelowPreferredSize(qreal desired, qreal sumAvailable, qreal sumDesired)-
64{-
65 Q_ASSERT(sumDesired != 0.0);-
66 return desired * qPow(sumAvailable / sumDesired, desired / sumDesired);-
67}-
68-
69static qreal fixedDescent(qreal descent, qreal ascent, qreal targetSize)-
70{-
71 if (descent < 0.0)-
72 return -1.0;-
73-
74 Q_ASSERT(descent >= 0.0);-
75 Q_ASSERT(ascent >= 0.0);-
76 Q_ASSERT(targetSize >= ascent + descent);-
77-
78 qreal extra = targetSize - (ascent + descent);-
79 return descent + (extra / 2.0);-
80}-
81-
82static qreal compare(const QGridLayoutBox &box1, const QGridLayoutBox &box2, int which)-
83{-
84 qreal size1 = box1.q_sizes(which);-
85 qreal size2 = box2.q_sizes(which);-
86-
87 if (which == MaximumSize) {-
88 return size2 - size1;-
89 } else {-
90 return size1 - size2;-
91 }-
92}-
93-
94void QGridLayoutBox::add(const QGridLayoutBox &other, int stretch, qreal spacing)-
95{-
96 Q_ASSERT(q_minimumDescent < 0.0);-
97-
98 q_minimumSize += other.q_minimumSize + spacing;-
99 q_preferredSize += other.q_preferredSize + spacing;-
100 q_maximumSize += ((stretch == 0) ? other.q_preferredSize : other.q_maximumSize) + spacing;-
101}-
102-
103void QGridLayoutBox::combine(const QGridLayoutBox &other)-
104{-
105 q_minimumDescent = qMax(q_minimumDescent, other.q_minimumDescent);-
106 q_minimumAscent = qMax(q_minimumAscent, other.q_minimumAscent);-
107-
108 q_minimumSize = qMax(q_minimumAscent + q_minimumDescent,-
109 qMax(q_minimumSize, other.q_minimumSize));-
110 qreal maxMax;-
111 if (q_maximumSize == FLT_MAX && other.q_maximumSize != FLT_MAX)-
112 maxMax = other.q_maximumSize;-
113 else if (other.q_maximumSize == FLT_MAX && q_maximumSize != FLT_MAX)-
114 maxMax = q_maximumSize;-
115 else-
116 maxMax = qMax(q_maximumSize, other.q_maximumSize);-
117-
118 q_maximumSize = qMax(q_minimumSize, maxMax);-
119 q_preferredSize = qBound(q_minimumSize, qMax(q_preferredSize, other.q_preferredSize),-
120 q_maximumSize);-
121}-
122-
123void QGridLayoutBox::normalize()-
124{-
125 q_maximumSize = qMax(qreal(0.0), q_maximumSize);-
126 q_minimumSize = qBound(qreal(0.0), q_minimumSize, q_maximumSize);-
127 q_preferredSize = qBound(q_minimumSize, q_preferredSize, q_maximumSize);-
128 q_minimumDescent = qMin(q_minimumDescent, q_minimumSize);-
129-
130 Q_ASSERT((q_minimumDescent < 0.0) == (q_minimumAscent < 0.0));-
131}-
132-
133#ifdef QGRIDLAYOUTENGINE_DEBUG-
134void QGridLayoutBox::dump(int indent) const-
135{-
136 qDebug("%*sBox (%g <= %g <= %g [%g/%g])", indent, "", q_minimumSize, q_preferredSize,-
137 q_maximumSize, q_minimumAscent, q_minimumDescent);-
138}-
139#endif-
140-
141bool operator==(const QGridLayoutBox &box1, const QGridLayoutBox &box2)-
142{-
143 for (int i = 0; i < NSizes; ++i) {-
144 if (box1.q_sizes(i) != box2.q_sizes(i))-
145 return false;-
146 }-
147 return box1.q_minimumDescent == box2.q_minimumDescent-
148 && box1.q_minimumAscent == box2.q_minimumAscent;-
149}-
150-
151void QGridLayoutRowData::reset(int count)-
152{-
153 ignore.fill(false, count);-
154 boxes.fill(QGridLayoutBox(), count);-
155 multiCellMap.clear();-
156 stretches.fill(0, count);-
157 spacings.fill(0.0, count);-
158 hasIgnoreFlag = false;-
159}-
160-
161void QGridLayoutRowData::distributeMultiCells(const QGridLayoutRowInfo &rowInfo, bool snapToPixelGrid)-
162{-
163 MultiCellMap::const_iterator i = multiCellMap.constBegin();-
164 for (; i != multiCellMap.constEnd(); ++i) {-
165 int start = i.key().first;-
166 int span = i.key().second;-
167 int end = start + span;-
168 const QGridLayoutBox &box = i.value().q_box;-
169 int stretch = i.value().q_stretch;-
170-
171 QGridLayoutBox totalBox = this->totalBox(start, end);-
172 QVarLengthArray<QGridLayoutBox> extras(span);-
173 QVarLengthArray<qreal> dummy(span);-
174 QVarLengthArray<qreal> newSizes(span);-
175-
176 for (int j = 0; j < NSizes; ++j) {-
177 qreal extra = compare(box, totalBox, j);-
178 if (extra > 0.0) {-
179 calculateGeometries(start, end, box.q_sizes(j), dummy.data(), newSizes.data(),-
180 0, totalBox, rowInfo, snapToPixelGrid);-
181-
182 for (int k = 0; k < span; ++k)-
183 extras[k].q_sizes(j) = newSizes[k];-
184 }-
185 }-
186-
187 for (int k = 0; k < span; ++k) {-
188 boxes[start + k].combine(extras[k]);-
189 if (stretch != 0)-
190 stretches[start + k] = qMax(stretches[start + k], stretch);-
191 }-
192 }-
193 multiCellMap.clear();-
194}-
195namespace {-
196-
197// does not return int-
198static inline qreal qround(qreal f)-
199{-
200 return std::floor(f + qreal(0.5));-
201}-
202-
203}-
204void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSize, qreal *positions,-
205 qreal *sizes, qreal *descents,-
206 const QGridLayoutBox &totalBox,-
207 const QGridLayoutRowInfo &rowInfo, bool snapToPixelGrid)-
208{-
209 Q_ASSERT(end > start);-
210-
211 targetSize = qMax(totalBox.q_minimumSize, targetSize);-
212-
213 int n = end - start;-
214 QVarLengthArray<qreal> newSizes(n);-
215 QVarLengthArray<qreal> factors(n);-
216 qreal sumFactors = 0.0;-
217 int sumStretches = 0;-
218 qreal sumAvailable;-
219-
220 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
221 if (const int stretch = stretches[.at(start + i]);-
222 if (stretch
stretch > 0Description
TRUEnever evaluated
FALSEnever evaluated
 > 0)
stretch > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
223 sumStretches += stretches[start + i];stretch;
never executed: sumStretches += stretch;
0
224 }
never executed: end of block
0
225-
226 if (targetSize < totalBox.q_preferredSize) {
targetSize < t..._preferredSizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
227 stealBox(start, end, MinimumSize, positions, sizes);-
228-
229 sumAvailable = targetSize - totalBox.q_minimumSize;-
230 if (sumAvailable > 0.0) {
sumAvailable > 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
231 qreal sumDesired = totalBox.q_preferredSize - totalBox.q_minimumSize;-
232-
233 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
234 if (ignore.testBit(start + i)) {
ignore.testBit(start + i)Description
TRUEnever evaluated
FALSEnever evaluated
0
235 factors[i] = 0.0;-
236 continue;
never executed: continue;
0
237 }-
238-
239 const QGridLayoutBox &box = boxes.at(start + i);-
240 qreal desired = box.q_preferredSize - box.q_minimumSize;-
241 factors[i] = growthFactorBelowPreferredSize(desired, sumAvailable, sumDesired);-
242 sumFactors += factors[i];-
243 }
never executed: end of block
0
244-
245 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
246 Q_ASSERT(sumFactors > 0.0);-
247 qreal delta = sumAvailable * factors[i] / sumFactors;-
248 newSizes[i] = sizes[i] + delta;-
249 }
never executed: end of block
0
250 }
never executed: end of block
0
251 } else {
never executed: end of block
0
252 bool isLargerThanMaximum = (targetSize > totalBox.q_maximumSize);-
253 if (isLargerThanMaximum) {
isLargerThanMaximumDescription
TRUEnever evaluated
FALSEnever evaluated
0
254 stealBox(start, end, MaximumSize, positions, sizes);-
255 sumAvailable = targetSize - totalBox.q_maximumSize;-
256 } else {
never executed: end of block
0
257 stealBox(start, end, PreferredSize, positions, sizes);-
258 sumAvailable = targetSize - totalBox.q_preferredSize;-
259 }
never executed: end of block
0
260-
261 if (sumAvailable > 0.0) {
sumAvailable > 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
262 qreal sumCurrentAvailable = sumAvailable;-
263 bool somethingHasAMaximumSize = false;-
264-
265 qreal sumSizes = 0.0;-
266 for (int i = 0; i < n; ++i)
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
267 sumSizes += sizes[i];
never executed: sumSizes += sizes[i];
0
268-
269 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
270 if (ignore.testBit(start + i)) {
ignore.testBit(start + i)Description
TRUEnever evaluated
FALSEnever evaluated
0
271 newSizes[i] = 0.0;-
272 factors[i] = 0.0;-
273 continue;
never executed: continue;
0
274 }-
275-
276 const QGridLayoutBox &box = boxes.at(start + i);-
277 qreal boxSize;-
278-
279 qreal desired;-
280 if (isLargerThanMaximum) {
isLargerThanMaximumDescription
TRUEnever evaluated
FALSEnever evaluated
0
281 boxSize = box.q_maximumSize;-
282 desired = rowInfo.boxes.value(start + i).q_maximumSize - boxSize;-
283 } else {
never executed: end of block
0
284 boxSize = box.q_preferredSize;-
285 desired = box.q_maximumSize - boxSize;-
286 }
never executed: end of block
0
287 if (desired == 0.0) {
desired == 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
288 newSizes[i] = sizes[i];-
289 factors[i] = 0.0;-
290 } else {
never executed: end of block
0
291 Q_ASSERT(desired > 0.0);-
292-
293 int stretch = stretches[start + i];-
294 if (sumStretches == 0) {
sumStretches == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
295 if (hasIgnoreFlag || sizes[i] == 0.0) {
hasIgnoreFlagDescription
TRUEnever evaluated
FALSEnever evaluated
sizes[i] == 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
296 factors[i] = (stretch < 0) ? 1.0 : 0.0;
(stretch < 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
297 } else {
never executed: end of block
0
298 factors[i] = (stretch < 0) ? sizes[i] : 0.0;
(stretch < 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
299 }
never executed: end of block
0
300 } else if (stretch == sumStretches) {
stretch == sumStretchesDescription
TRUEnever evaluated
FALSEnever evaluated
0
301 factors[i] = 1.0;-
302 } else if (stretch <= 0) {
never executed: end of block
stretch <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
303 factors[i] = 0.0;-
304 } else {
never executed: end of block
0
305 qreal ultimateSize;-
306 qreal ultimateSumSizes;-
307 qreal x = ((stretch * sumSizes)-
308 - (sumStretches * boxSize))-
309 / (sumStretches - stretch);-
310 if (x >= 0.0) {
x >= 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
311 ultimateSize = boxSize + x;-
312 ultimateSumSizes = sumSizes + x;-
313 } else {
never executed: end of block
0
314 ultimateSize = boxSize;-
315 ultimateSumSizes = (sumStretches * boxSize)-
316 / stretch;-
317 }
never executed: end of block
0
318-
319 /*-
320 We multiply these by 1.5 to give some space for a smooth transition-
321 (at the expense of the stretch factors, which are not fully respected-
322 during the transition).-
323 */-
324 ultimateSize = ultimateSize * 3 / 2;-
325 ultimateSumSizes = ultimateSumSizes * 3 / 2;-
326-
327 qreal beta = ultimateSumSizes - sumSizes;-
328 if (!beta) {
!betaDescription
TRUEnever evaluated
FALSEnever evaluated
0
329 factors[i] = 1;-
330 } else {
never executed: end of block
0
331 qreal alpha = qMin(sumCurrentAvailable, beta);-
332 qreal ultimateFactor = (stretch * ultimateSumSizes / sumStretches)-
333 - (boxSize);-
334 qreal transitionalFactor = sumCurrentAvailable * (ultimateSize - boxSize) / beta;-
335-
336 factors[i] = ((alpha * ultimateFactor)-
337 + ((beta - alpha) * transitionalFactor)) / beta;-
338 }
never executed: end of block
0
339-
340 }-
341 sumFactors += factors[i];-
342 if (desired < sumCurrentAvailable)
desired < sumCurrentAvailableDescription
TRUEnever evaluated
FALSEnever evaluated
0
343 somethingHasAMaximumSize = true;
never executed: somethingHasAMaximumSize = true;
0
344-
345 newSizes[i] = -1.0;-
346 }
never executed: end of block
0
347 }-
348-
349 bool keepGoing = somethingHasAMaximumSize;-
350 while (keepGoing) {
keepGoingDescription
TRUEnever evaluated
FALSEnever evaluated
0
351 //sumCurrentAvailable is so large that something *might* reach its maximum size-
352 keepGoing = false;-
353-
354 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
355 if (newSizes[i] >= 0.0)
newSizes[i] >= 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
356 continue;
never executed: continue;
0
357-
358 const QVector<QGridLayoutBox> &rBoxes = isLargerThanMaximum ? rowInfo.boxes : boxes;
isLargerThanMaximumDescription
TRUEnever evaluated
FALSEnever evaluated
0
359 const QGridLayoutBox &box = rBoxes.value(start + i);-
360 qreal maxBoxSize = box.q_maximumSize;-
361-
362 if (snapToPixelGrid)
snapToPixelGridDescription
TRUEnever evaluated
FALSEnever evaluated
0
363 maxBoxSize = qMax(box.q_minimumSize, std::floor(maxBoxSize));
never executed: maxBoxSize = qMax(box.q_minimumSize, std::floor(maxBoxSize));
0
364-
365 qreal avail = sumCurrentAvailable * factors[i] / sumFactors;-
366 if (sizes[i] + avail >= maxBoxSize) {
sizes[i] + avail >= maxBoxSizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
367 newSizes[i] = maxBoxSize;-
368 sumCurrentAvailable -= maxBoxSize - sizes[i];-
369 sumFactors -= factors[i];-
370 keepGoing = (sumCurrentAvailable > 0.0);-
371 if (!keepGoing)
!keepGoingDescription
TRUEnever evaluated
FALSEnever evaluated
0
372 break;
never executed: break;
0
373 }
never executed: end of block
0
374 }
never executed: end of block
0
375 }
never executed: end of block
0
376 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
377 if (newSizes[i] < 0.0) {
newSizes[i] < 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
378 qreal delta = (sumFactors == 0.0) ? 0.0
(sumFactors == 0.0)Description
TRUEnever evaluated
FALSEnever evaluated
0
379 : sumCurrentAvailable * factors[i] / sumFactors;-
380 newSizes[i] = sizes[i] + delta;-
381 }
never executed: end of block
0
382 }
never executed: end of block
0
383 }
never executed: end of block
0
384 }
never executed: end of block
0
385-
386 if (sumAvailable > 0) {
sumAvailable > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
387 qreal offset = 0;-
388 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
389 qreal delta = newSizes[i] - sizes[i];-
390 positions[i] += offset;-
391 sizes[i] += delta;-
392 offset += delta;-
393 }
never executed: end of block
0
394-
395#if 0 // some "pixel allocation"-
396 int surplus = targetSize - (positions[n - 1] + sizes[n - 1]);-
397 Q_ASSERT(surplus >= 0 && surplus <= n);-
398-
399 int prevSurplus = -1;-
400 while (surplus > 0 && surplus != prevSurplus) {-
401 prevSurplus = surplus;-
402-
403 int offset = 0;-
404 for (int i = 0; i < n; ++i) {-
405 const QGridLayoutBox &box = boxes.at(start + i);-
406 int delta = (!ignore.testBit(start + i) && surplus > 0-
407 && factors[i] > 0 && sizes[i] < box.q_maximumSize)-
408 ? 1 : 0;-
409-
410 positions[i] += offset;-
411 sizes[i] += delta;-
412 offset += delta;-
413 surplus -= delta;-
414 }-
415 }-
416 Q_ASSERT(surplus == 0);-
417#endif-
418 }
never executed: end of block
0
419 if (snapToPixelGrid) {
snapToPixelGridDescription
TRUEnever evaluated
FALSEnever evaluated
0
420 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
421 const qreal oldpos = positions[i];-
422 positions[i] = qround(oldpos);-
423 const qreal delta = positions[i]);] - oldpos;-
424 sizes[i] -= delta;-
425 if (i > 0)
i > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
426 sizes[i - 1] += delta;
never executed: sizes[i - 1] += delta;
0
427 }
never executed: end of block
0
428-
429 sizes[n - 1] = targetSize - positions[n - 1];-
430 // This loop serves two purposes:-
431 // 1. round off the small epsilons produced by the above loop.-
432 // 2. avoid that the above loop didn't make the cell width smaller than its minimum constraint.-
433
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
434 const QGridLayoutBox &box = boxes.at(start + i);-
435 sizes[i] = qMax(box.q_minimumSize, qround(sizes[i]));-
436 }
never executed: end of block
0
437 }
never executed: end of block
0
438-
439 if (descents) {
descentsDescription
TRUEnever evaluated
FALSEnever evaluated
0
440 for (int i = 0; i < n; ++i) {
i < nDescription
TRUEnever evaluated
FALSEnever evaluated
0
441 if (ignore.testBit(start + i))
ignore.testBit(start + i)Description
TRUEnever evaluated
FALSEnever evaluated
0
442 continue;
never executed: continue;
0
443 const QGridLayoutBox &box = boxes.at(start + i);-
444 descents[i] = fixedDescent(box.q_minimumDescent, box.q_minimumAscent, sizes[i]);-
445 }
never executed: end of block
0
446 }
never executed: end of block
0
447}
never executed: end of block
0
448-
449QGridLayoutBox QGridLayoutRowData::totalBox(int start, int end) const-
450{-
451 QGridLayoutBox result;-
452 if (start < end) {-
453 result.q_maximumSize = 0.0;-
454 qreal nextSpacing = 0.0;-
455 for (int i = start; i < end; ++i) {-
456 if (ignore.testBit(i))-
457 continue;-
458 result.add(boxes.at(i), stretches.at(i), nextSpacing);-
459 nextSpacing = spacings.at(i);-
460 }-
461 }-
462 return result;-
463}-
464-
465void QGridLayoutRowData::stealBox(int start, int end, int which, qreal *positions, qreal *sizes)-
466{-
467 qreal offset = 0.0;-
468 qreal nextSpacing = 0.0;-
469-
470 for (int i = start; i < end; ++i) {-
471 qreal avail = 0.0;-
472-
473 if (!ignore.testBit(i)) {-
474 const QGridLayoutBox &box = boxes.at(i);-
475 avail = box.q_sizes(which);-
476 offset += nextSpacing;-
477 nextSpacing = spacings.at(i);-
478 }-
479-
480 *positions++ = offset;-
481 *sizes++ = avail;-
482 offset += avail;-
483 }-
484}-
485-
486#ifdef QGRIDLAYOUTENGINE_DEBUG-
487void QGridLayoutRowData::dump(int indent) const-
488{-
489 qDebug("%*sData", indent, "");-
490-
491 for (int i = 0; i < ignore.count(); ++i) {-
492 qDebug("%*s Row %d (stretch %d, spacing %g)", indent, "", i, stretches.at(i),-
493 spacings.at(i));-
494 if (ignore.testBit(i))-
495 qDebug("%*s Ignored", indent, "");-
496 boxes.at(i).dump(indent + 2);-
497 }-
498-
499 MultiCellMap::const_iterator it = multiCellMap.constBegin();-
500 while (it != multiCellMap.constEnd()) {-
501 qDebug("%*s Multi-cell entry <%d, %d> (stretch %d)", indent, "", it.key().first,-
502 it.key().second, it.value().q_stretch);-
503 it.value().q_box.dump(indent + 2);-
504 }-
505}-
506#endif-
507-
508QGridLayoutItem::QGridLayoutItem(int row, int column, int rowSpan, int columnSpan,-
509 Qt::Alignment alignment)-
510 : q_alignment(alignment)-
511{-
512 q_firstRows[Hor] = column;-
513 q_firstRows[Ver] = row;-
514 q_rowSpans[Hor] = columnSpan;-
515 q_rowSpans[Ver] = rowSpan;-
516 q_stretches[Hor] = -1;-
517 q_stretches[Ver] = -1;-
518}-
519-
520int QGridLayoutItem::firstRow(Qt::Orientation orientation) const-
521{-
522 return q_firstRows[orientation == Qt::Vertical];-
523}-
524-
525int QGridLayoutItem::firstColumn(Qt::Orientation orientation) const-
526{-
527 return q_firstRows[orientation == Qt::Horizontal];-
528}-
529-
530int QGridLayoutItem::lastRow(Qt::Orientation orientation) const-
531{-
532 return firstRow(orientation) + rowSpan(orientation) - 1;-
533}-
534-
535int QGridLayoutItem::lastColumn(Qt::Orientation orientation) const-
536{-
537 return firstColumn(orientation) + columnSpan(orientation) - 1;-
538}-
539-
540int QGridLayoutItem::rowSpan(Qt::Orientation orientation) const-
541{-
542 return q_rowSpans[orientation == Qt::Vertical];-
543}-
544-
545int QGridLayoutItem::columnSpan(Qt::Orientation orientation) const-
546{-
547 return q_rowSpans[orientation == Qt::Horizontal];-
548}-
549-
550void QGridLayoutItem::setFirstRow(int row, Qt::Orientation orientation)-
551{-
552 q_firstRows[orientation == Qt::Vertical] = row;-
553}-
554-
555void QGridLayoutItem::setRowSpan(int rowSpan, Qt::Orientation orientation)-
556{-
557 q_rowSpans[orientation == Qt::Vertical] = rowSpan;-
558}-
559-
560int QGridLayoutItem::stretchFactor(Qt::Orientation orientation) const-
561{-
562 int stretch = q_stretches[orientation == Qt::Vertical];-
563 if (stretch >= 0)-
564 return stretch;-
565-
566 QLayoutPolicy::Policy policy = sizePolicy(orientation);-
567-
568 if (policy & QLayoutPolicy::ExpandFlag) {-
569 return 1;-
570 } else if (policy & QLayoutPolicy::GrowFlag) {-
571 return -1; // because we max it up-
572 } else {-
573 return 0;-
574 }-
575}-
576-
577void QGridLayoutItem::setStretchFactor(int stretch, Qt::Orientation orientation)-
578{-
579 Q_ASSERT(stretch >= 0); // ### deal with too big stretches-
580 q_stretches[orientation == Qt::Vertical] = stretch;-
581}-
582-
583QLayoutPolicy::ControlTypes QGridLayoutItem::controlTypes(LayoutSide /*side*/) const-
584{-
585 return QLayoutPolicy::DefaultType;-
586}-
587-
588QGridLayoutBox QGridLayoutItem::box(Qt::Orientation orientation, bool snapToPixelGrid, qreal constraint) const-
589{-
590 QGridLayoutBox result;-
591 QLayoutPolicy::Policy policy = sizePolicy(orientation);-
592-
593 if (orientation == Qt::Horizontal) {
orientation == Qt::HorizontalDescription
TRUEnever evaluated
FALSEnever evaluated
0
594 QSizeF constraintSize(-1.0, constraint);-
595-
596 result.q_preferredSize = sizeHint(Qt::PreferredSize, constraintSize).width();-
597-
598 if (policy & QLayoutPolicy::ShrinkFlag) {
policy & QLayo...cy::ShrinkFlagDescription
TRUEnever evaluated
FALSEnever evaluated
0
599 result.q_minimumSize = sizeHint(Qt::MinimumSize, constraintSize).width();-
600 } else {
never executed: end of block
0
601 result.q_minimumSize = result.q_preferredSize;-
602 }
never executed: end of block
0
603 if (snapToPixelGrid)
snapToPixelGridDescription
TRUEnever evaluated
FALSEnever evaluated
0
604 result.q_minimumSize = qCeil(result.q_minimumSize);
never executed: result.q_minimumSize = qCeil(result.q_minimumSize);
0
605-
606 if (policy & (QLayoutPolicy::GrowFlag | QLayoutPolicy::ExpandFlag)) {
policy & (QLay...y::ExpandFlag)Description
TRUEnever evaluated
FALSEnever evaluated
0
607 result.q_maximumSize = sizeHint(Qt::MaximumSize, constraintSize).width();-
608 } else {
never executed: end of block
0
609 result.q_maximumSize = result.q_preferredSize;-
610 }
never executed: end of block
0
611 } else {-
612 QSizeF constraintSize(constraint, -1.0);-
613-
614 result.q_preferredSize = sizeHint(Qt::PreferredSize, constraintSize).height();-
615-
616 if (policy & QLayoutPolicy::ShrinkFlag) {
policy & QLayo...cy::ShrinkFlagDescription
TRUEnever evaluated
FALSEnever evaluated
0
617 result.q_minimumSize = sizeHint(Qt::MinimumSize, constraintSize).height();-
618 } else {
never executed: end of block
0
619 result.q_minimumSize = result.q_preferredSize;-
620 }
never executed: end of block
0
621 if (snapToPixelGrid)
snapToPixelGridDescription
TRUEnever evaluated
FALSEnever evaluated
0
622 result.q_minimumSize = qCeil(result.q_minimumSize);
never executed: result.q_minimumSize = qCeil(result.q_minimumSize);
0
623-
624 if (policy & (QLayoutPolicy::GrowFlag | QLayoutPolicy::ExpandFlag)) {
policy & (QLay...y::ExpandFlag)Description
TRUEnever evaluated
FALSEnever evaluated
0
625 result.q_maximumSize = sizeHint(Qt::MaximumSize, constraintSize).height();-
626 } else {
never executed: end of block
0
627 result.q_maximumSize = result.q_preferredSize;-
628 }
never executed: end of block
0
629-
630 if (alignment() & Qt::AlignBaseline) {
alignment() & ...:AlignBaselineDescription
TRUEnever evaluated
FALSEnever evaluated
0
631 result.q_minimumDescent = sizeHint(Qt::MinimumDescent, constraintSize).height();-
632 if (result.q_minimumDescent != -1.0) {
result.q_minim...escent != -1.0Description
TRUEnever evaluated
FALSEnever evaluated
0
633 const qreal minSizeHint = sizeHint(Qt::MinimumSize, constraintSize).height();-
634 result.q_minimumDescent -= (minSizeHint - result.q_minimumSize);-
635 result.q_minimumAscent = result.q_minimumSize - result.q_minimumDescent;-
636 }
never executed: end of block
0
637 }
never executed: end of block
0
638 }
never executed: end of block
0
639 if (policy & QLayoutPolicy::IgnoreFlag)
policy & QLayo...cy::IgnoreFlagDescription
TRUEnever evaluated
FALSEnever evaluated
0
640 result.q_preferredSize = result.q_minimumSize;
never executed: result.q_preferredSize = result.q_minimumSize;
0
641-
642 return result;
never executed: return result;
0
643}-
644-
645QRectF QGridLayoutItem::geometryWithin(qreal x, qreal y, qreal width, qreal height,-
646 qreal rowDescent, Qt::Alignment align, bool snapToPixelGrid) const-
647{-
648 const qreal cellWidth = width;-
649 const qreal cellHeight = height;-
650-
651 QSizeF size = effectiveMaxSize(QSizeF(-1,-1));-
652 if (hasDynamicConstraint()) {
hasDynamicConstraint()Description
TRUEnever evaluated
FALSEnever evaluated
0
653 if (dynamicConstraintOrientation() == Qt::Vertical) {
dynamicConstra...= Qt::VerticalDescription
TRUEnever evaluated
FALSEnever evaluated
0
654 if (size.width() > cellWidth)
size.width() > cellWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
655 size = effectiveMaxSize(QSizeF(cellWidth, -1));
never executed: size = effectiveMaxSize(QSizeF(cellWidth, -1));
0
656 } else if (size.height() > cellHeight) {
never executed: end of block
size.height() > cellHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
657 size = effectiveMaxSize(QSizeF(-1, cellHeight));-
658 }
never executed: end of block
0
659 }
never executed: end of block
0
660 size = size.boundedTo(QSizeF(cellWidth, cellHeight));-
661 width = size.width();-
662 height = size.height();-
663-
664 switch (align & Qt::AlignHorizontal_Mask) {-
665 case Qt::AlignHCenter:
never executed: case Qt::AlignHCenter:
0
666 x += (cellWidth - width)/2;-
667 break;
never executed: break;
0
668 case Qt::AlignRight:
never executed: case Qt::AlignRight:
0
669 x += cellWidth - width;-
670 break;
never executed: break;
0
671 default:
never executed: default:
0
672 break;
never executed: break;
0
673 }-
674-
675 switch (align & Qt::AlignVertical_Mask) {-
676 case Qt::AlignVCenter:
never executed: case Qt::AlignVCenter:
0
677 y += (cellHeight - height)/2;-
678 break;
never executed: break;
0
679 case Qt::AlignBottom:
never executed: case Qt::AlignBottom:
0
680 y += cellHeight - height;-
681 break;
never executed: break;
0
682 case Qt::AlignBaseline: {
never executed: case Qt::AlignBaseline:
0
683 width = qMin(effectiveMaxSize(QSizeF(-1,-1)).width(), width);-
684 QGridLayoutBox vBox = box(Qt::Vertical, snapToPixelGrid);-
685 const qreal descent = vBox.q_minimumDescent;-
686 const qreal ascent = vBox.q_minimumSize - descent;-
687 y += (cellHeight - rowDescent - ascent);-
688 height = ascent + descent;-
689 break; }
never executed: break;
0
690 default:
never executed: default:
0
691 break;
never executed: break;
0
692 }-
693 return QRectF(x, y, width, height);
never executed: return QRectF(x, y, width, height);
0
694}-
695-
696void QGridLayoutItem::transpose()-
697{-
698 qSwap(q_firstRows[Hor], q_firstRows[Ver]);-
699 qSwap(q_rowSpans[Hor], q_rowSpans[Ver]);-
700 qSwap(q_stretches[Hor], q_stretches[Ver]);-
701}-
702-
703void QGridLayoutItem::insertOrRemoveRows(int row, int delta, Qt::Orientation orientation)-
704{-
705 int oldFirstRow = firstRow(orientation);-
706 if (oldFirstRow >= row) {-
707 setFirstRow(oldFirstRow + delta, orientation);-
708 } else if (lastRow(orientation) >= row) {-
709 setRowSpan(rowSpan(orientation) + delta, orientation);-
710 }-
711}-
712/*!-
713 \internal-
714 returns the effective maximumSize, will take the sizepolicy into-
715 consideration. (i.e. if sizepolicy does not have QLayoutPolicy::Grow, then-
716 maxSizeHint will be the preferredSize)-
717 Note that effectiveSizeHint does not take sizePolicy into consideration,-
718 (since it only evaluates the hints, as the name implies)-
719*/-
720QSizeF QGridLayoutItem::effectiveMaxSize(const QSizeF &constraint) const-
721{-
722 QSizeF size = constraint;-
723 bool vGrow = (sizePolicy(Qt::Vertical) & QLayoutPolicy::GrowFlag) == QLayoutPolicy::GrowFlag;-
724 bool hGrow = (sizePolicy(Qt::Horizontal) & QLayoutPolicy::GrowFlag) == QLayoutPolicy::GrowFlag;-
725 if (!vGrow || !hGrow) {-
726 QSizeF pref = sizeHint(Qt::PreferredSize, constraint);-
727 if (!vGrow)-
728 size.setHeight(pref.height());-
729 if (!hGrow)-
730 size.setWidth(pref.width());-
731 }-
732-
733 if (!size.isValid()) {-
734 QSizeF maxSize = sizeHint(Qt::MaximumSize, size);-
735 if (size.width() == -1)-
736 size.setWidth(maxSize.width());-
737 if (size.height() == -1)-
738 size.setHeight(maxSize.height());-
739 }-
740 return size;-
741}-
742-
743#ifdef QGRIDLAYOUTENGINE_DEBUG-
744void QGridLayoutItem::dump(int indent) const-
745{-
746 qDebug("%*s (%d, %d) %d x %d", indent, "", firstRow(), firstColumn(), //###-
747 rowSpan(), columnSpan());-
748-
749 if (q_stretches[Hor] >= 0)-
750 qDebug("%*s Horizontal stretch: %d", indent, "", q_stretches[Hor]);-
751 if (q_stretches[Ver] >= 0)-
752 qDebug("%*s Vertical stretch: %d", indent, "", q_stretches[Ver]);-
753 if (q_alignment != 0)-
754 qDebug("%*s Alignment: %x", indent, "", uint(q_alignment));-
755 qDebug("%*s Horizontal size policy: %x Vertical size policy: %x",-
756 indent, "", sizePolicy(Qt::Horizontal), sizePolicy(Qt::Vertical));-
757}-
758#endif-
759-
760void QGridLayoutRowInfo::insertOrRemoveRows(int row, int delta)-
761{-
762 count += delta;-
763-
764 insertOrRemoveItems(stretches, row, delta);-
765 insertOrRemoveItems(spacings, row, delta);-
766 insertOrRemoveItems(alignments, row, delta);-
767 insertOrRemoveItems(boxes, row, delta);-
768}-
769-
770#ifdef QGRIDLAYOUTENGINE_DEBUG-
771void QGridLayoutRowInfo::dump(int indent) const-
772{-
773 qDebug("%*sInfo (count: %d)", indent, "", count);-
774 for (int i = 0; i < count; ++i) {-
775 QString message;-
776-
777 if (stretches.value(i).value() >= 0)-
778 message += QString::fromLatin1(" stretch %1").arg(stretches.value(i).value());-
779 if (spacings.value(i).value() >= 0.0)-
780 message += QString::fromLatin1(" spacing %1").arg(spacings.value(i).value());-
781 if (alignments.value(i) != 0)-
782 message += QString::fromLatin1(" alignment %1").arg(int(alignments.value(i)), 16);-
783-
784 if (!message.isEmpty() || boxes.value(i) != QGridLayoutBox()) {-
785 qDebug("%*s Row %d:%s", indent, "", i, qPrintable(message));-
786 if (boxes.value(i) != QGridLayoutBox())-
787 boxes.value(i).dump(indent + 1);-
788 }-
789 }-
790}-
791#endif-
792-
793QGridLayoutEngine::QGridLayoutEngine(Qt::Alignment defaultAlignment, bool snapToPixelGrid)-
794{-
795 m_visualDirection = Qt::LeftToRight;-
796 m_defaultAlignment = defaultAlignment;-
797 m_snapToPixelGrid = snapToPixelGrid;-
798 invalidate();-
799}-
800-
801int QGridLayoutEngine::rowCount(Qt::Orientation orientation) const-
802{-
803 return q_infos[orientation == Qt::Vertical].count;-
804}-
805-
806int QGridLayoutEngine::columnCount(Qt::Orientation orientation) const-
807{-
808 return q_infos[orientation == Qt::Horizontal].count;-
809}-
810-
811int QGridLayoutEngine::itemCount() const-
812{-
813 return q_items.count();-
814}-
815-
816QGridLayoutItem *QGridLayoutEngine::itemAt(int index) const-
817{-
818 Q_ASSERT(index >= 0 && index < itemCount());-
819 return q_items.at(index);-
820}-
821-
822int QGridLayoutEngine::effectiveFirstRow(Qt::Orientation orientation) const-
823{-
824 ensureEffectiveFirstAndLastRows();-
825 return q_cachedEffectiveFirstRows[orientation == Qt::Vertical];-
826}-
827-
828int QGridLayoutEngine::effectiveLastRow(Qt::Orientation orientation) const-
829{-
830 ensureEffectiveFirstAndLastRows();-
831 return q_cachedEffectiveLastRows[orientation == Qt::Vertical];-
832}-
833-
834void QGridLayoutEngine::setSpacing(qreal spacing, Qt::Orientations orientations)-
835{-
836 if (orientations & Qt::Horizontal)-
837 q_defaultSpacings[Hor].setUserValue(spacing);-
838 if (orientations & Qt::Vertical)-
839 q_defaultSpacings[Ver].setUserValue(spacing);-
840-
841 invalidate();-
842}-
843-
844qreal QGridLayoutEngine::spacing(Qt::Orientation orientation, const QAbstractLayoutStyleInfo *styleInfo) const-
845{-
846 if (!q_defaultSpacings[orientation == Qt::Vertical].isUser()) {-
847 qreal defaultSpacing = styleInfo->spacing(orientation);-
848 q_defaultSpacings[orientation == Qt::Vertical].setCachedValue(defaultSpacing);-
849 }-
850 return q_defaultSpacings[orientation == Qt::Vertical].value();-
851}-
852-
853void QGridLayoutEngine::setRowSpacing(int row, qreal spacing, Qt::Orientation orientation)-
854{-
855 Q_ASSERT(row >= 0);-
856-
857 QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical];-
858 if (row >= rowInfo.spacings.count())-
859 rowInfo.spacings.resize(row + 1);-
860 if (spacing >= 0)-
861 rowInfo.spacings[row].setUserValue(spacing);-
862 else-
863 rowInfo.spacings[row] = QLayoutParameter<qreal>();-
864 invalidate();-
865}-
866-
867qreal QGridLayoutEngine::rowSpacing(int row, Qt::Orientation orientation) const-
868{-
869 QLayoutParameter<qreal> spacing = q_infos[orientation == Qt::Vertical].spacings.value(row);-
870 if (!spacing.isDefault())-
871 return spacing.value();-
872 return q_defaultSpacings[orientation == Qt::Vertical].value();-
873}-
874-
875void QGridLayoutEngine::setRowStretchFactor(int row, int stretch, Qt::Orientation orientation)-
876{-
877 Q_ASSERT(row >= 0);-
878 Q_ASSERT(stretch >= 0);-
879-
880 maybeExpandGrid(row, -1, orientation);-
881-
882 QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical];-
883 if (row >= rowInfo.stretches.count())-
884 rowInfo.stretches.resize(row + 1);-
885 rowInfo.stretches[row].setUserValue(stretch);-
886}-
887-
888int QGridLayoutEngine::rowStretchFactor(int row, Qt::Orientation orientation) const-
889{-
890 QStretchParameter stretch = q_infos[orientation == Qt::Vertical].stretches.value(row);-
891 if (!stretch.isDefault())-
892 return stretch.value();-
893 return 0;-
894}-
895-
896void QGridLayoutEngine::setRowSizeHint(Qt::SizeHint which, int row, qreal size,-
897 Qt::Orientation orientation)-
898{-
899 Q_ASSERT(row >= 0);-
900 Q_ASSERT(size >= 0.0);-
901-
902 maybeExpandGrid(row, -1, orientation);-
903-
904 QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical];-
905 if (row >= rowInfo.boxes.count())-
906 rowInfo.boxes.resize(row + 1);-
907 rowInfo.boxes[row].q_sizes(which) = size;-
908}-
909-
910qreal QGridLayoutEngine::rowSizeHint(Qt::SizeHint which, int row, Qt::Orientation orientation) const-
911{-
912 return q_infos[orientation == Qt::Vertical].boxes.value(row).q_sizes(which);-
913}-
914-
915void QGridLayoutEngine::setRowAlignment(int row, Qt::Alignment alignment,-
916 Qt::Orientation orientation)-
917{-
918 Q_ASSERT(row >= 0);-
919-
920 maybeExpandGrid(row, -1, orientation);-
921-
922 QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical];-
923 if (row >= rowInfo.alignments.count())-
924 rowInfo.alignments.resize(row + 1);-
925 rowInfo.alignments[row] = alignment;-
926}-
927-
928Qt::Alignment QGridLayoutEngine::rowAlignment(int row, Qt::Orientation orientation) const-
929{-
930 Q_ASSERT(row >= 0);-
931 return q_infos[orientation == Qt::Vertical].alignments.value(row);-
932}-
933-
934Qt::Alignment QGridLayoutEngine::effectiveAlignment(const QGridLayoutItem *layoutItem) const-
935{-
936 Qt::Alignment align = layoutItem->alignment();-
937 if (!(align & Qt::AlignVertical_Mask)) {-
938 // no vertical alignment, respect the row alignment-
939 int y = layoutItem->firstRow();-
940 align |= (rowAlignment(y, Qt::Vertical) & Qt::AlignVertical_Mask);-
941 if (!(align & Qt::AlignVertical_Mask))-
942 align |= (m_defaultAlignment & Qt::AlignVertical_Mask);-
943 }-
944 if (!(align & Qt::AlignHorizontal_Mask)) {-
945 // no horizontal alignment, respect the column alignment-
946 int x = layoutItem->firstColumn();-
947 align |= (rowAlignment(x, Qt::Horizontal) & Qt::AlignHorizontal_Mask);-
948 }-
949-
950 return align;-
951}-
952-
953/*!-
954 \internal-
955 The \a index is only used by QGraphicsLinearLayout to ensure that itemAt() reflects the order-
956 of visual arrangement. Strictly speaking it does not have to, but most people expect it to.-
957 (And if it didn't we would have to add itemArrangedAt(int index) or something..)-
958 */-
959void QGridLayoutEngine::insertItem(QGridLayoutItem *item, int index)-
960{-
961 maybeExpandGrid(item->lastRow(), item->lastColumn());-
962-
963 if (index == -1)-
964 q_items.append(item);-
965 else-
966 q_items.insert(index, item);-
967-
968 for (int i = item->firstRow(); i <= item->lastRow(); ++i) {-
969 for (int j = item->firstColumn(); j <= item->lastColumn(); ++j) {-
970 if (itemAt(i, j))-
971 qWarning("QGridLayoutEngine::addItem: Cell (%d, %d) already taken", i, j);-
972 setItemAt(i, j, item);-
973 }-
974 }-
975}-
976-
977void QGridLayoutEngine::addItem(QGridLayoutItem *item)-
978{-
979 insertItem(item, -1);-
980}-
981-
982void QGridLayoutEngine::removeItem(QGridLayoutItem *item)-
983{-
984 Q_ASSERT(q_items.contains(item));-
985-
986 invalidate();-
987-
988 for (int i = item->firstRow(); i <= item->lastRow(); ++i) {-
989 for (int j = item->firstColumn(); j <= item->lastColumn(); ++j) {-
990 if (itemAt(i, j) == item)-
991 setItemAt(i, j, 0);-
992 }-
993 }-
994-
995 q_items.removeAll(item);-
996}-
997-
998-
999QGridLayoutItem *QGridLayoutEngine::itemAt(int row, int column, Qt::Orientation orientation) const-
1000{-
1001 if (orientation == Qt::Horizontal)-
1002 qSwap(row, column);-
1003 if (uint(row) >= uint(rowCount()) || uint(column) >= uint(columnCount()))-
1004 return 0;-
1005 return q_grid.at((row * internalGridColumnCount()) + column);-
1006}-
1007-
1008void QGridLayoutEngine::invalidate()-
1009{-
1010 q_cachedEffectiveFirstRows[Hor] = -1;-
1011 q_cachedEffectiveFirstRows[Ver] = -1;-
1012 q_cachedEffectiveLastRows[Hor] = -1;-
1013 q_cachedEffectiveLastRows[Ver] = -1;-
1014-
1015 q_totalBoxCachedConstraints[Hor] = NotCached;-
1016 q_totalBoxCachedConstraints[Ver] = NotCached;-
1017-
1018 q_cachedSize = QSizeF();-
1019 q_cachedConstraintOrientation = UnknownConstraint;-
1020}-
1021-
1022static void visualRect(QRectF *geom, Qt::LayoutDirection dir, const QRectF &contentsRect)-
1023{-
1024 if (dir == Qt::RightToLeft)-
1025 geom->moveRight(contentsRect.right() - (geom->left() - contentsRect.left()));-
1026}-
1027-
1028void QGridLayoutEngine::setGeometries(const QRectF &contentsGeometry, const QAbstractLayoutStyleInfo *styleInfo)-
1029{-
1030 if (rowCount() < 1 || columnCount() < 1)
rowCount() < 1Description
TRUEnever evaluated
FALSEnever evaluated
columnCount() < 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1031 return;
never executed: return;
0
1032-
1033 ensureGeometries(contentsGeometry.size(), styleInfo);-
1034-
1035 for (int i = q_items.count() - 1; i >= 0; --i) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
1036 QGridLayoutItem *item = q_items.at(i);-
1037-
1038 qreal x = q_xx[.at(item->firstColumn()];());-
1039 qreal y = q_yy[.at(item->firstRow()];());-
1040 qreal width = q_widths[.at(item->lastColumn()];());-
1041 qreal height = q_heights[.at(item->lastRow()];());-
1042-
1043 if (item->columnSpan() != 1)
item->columnSpan() != 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1044 width += q_xx[.at(item->lastColumn()]()) - x;
never executed: width += q_xx.at(item->lastColumn()) - x;
0
1045 if (item->rowSpan() != 1)
item->rowSpan() != 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1046 height += q_yy[.at(item->lastRow()]()) - y;
never executed: height += q_yy.at(item->lastRow()) - y;
0
1047-
1048 const Qt::Alignment align = effectiveAlignment(item);-
1049 QRectF geom = item->geometryWithin(contentsGeometry.x() + x, contentsGeometry.y() + y,-
1050 width, height, q_descents[.at(item->lastRow()],()), align, m_snapToPixelGrid);-
1051 if (m_snapToPixelGrid) {
m_snapToPixelGridDescription
TRUEnever evaluated
FALSEnever evaluated
0
1052 // x and y should already be rounded, but the call to geometryWithin() above might-
1053 // result in a geom with x,y at half-pixels (due to centering within the cell)-
1054 geom.setX(qround(geom.x()));-
1055 // Do not snap baseline aligned items, since that might cause the baselines to not be aligned.-
1056 if (align != Qt::AlignBaseline)
align != Qt::AlignBaselineDescription
TRUEnever evaluated
FALSEnever evaluated
0
1057 geom.setY(qround(geom.y()));
never executed: geom.setY(qround(geom.y()));
0
1058 }
never executed: end of block
0
1059 visualRect(&geom, visualDirection(), contentsGeometry);-
1060 item->setGeometry(geom);-
1061 }
never executed: end of block
0
1062}
never executed: end of block
0
1063-
1064// ### candidate for deletion-
1065QRectF QGridLayoutEngine::cellRect(const QRectF &contentsGeometry, int row, int column, int rowSpan,-
1066 int columnSpan, const QAbstractLayoutStyleInfo *styleInfo) const-
1067{-
1068 if (uint(row) >= uint(rowCount()) || uint(column) >= uint(columnCount())-
1069 || rowSpan < 1 || columnSpan < 1)-
1070 return QRectF();-
1071-
1072 ensureGeometries(contentsGeometry.size(), styleInfo);-
1073-
1074 int lastColumn = qMax(column + columnSpan, columnCount()) - 1;-
1075 int lastRow = qMax(row + rowSpan, rowCount()) - 1;-
1076-
1077 qreal x = q_xx[column];-
1078 qreal y = q_yy[row];-
1079 qreal width = q_widths[lastColumn];-
1080 qreal height = q_heights[lastRow];-
1081-
1082 if (columnSpan != 1)-
1083 width += q_xx[lastColumn] - x;-
1084 if (rowSpan != 1)-
1085 height += q_yy[lastRow] - y;-
1086-
1087 return QRectF(contentsGeometry.x() + x, contentsGeometry.y() + y, width, height);-
1088}-
1089-
1090QSizeF QGridLayoutEngine::sizeHint(Qt::SizeHint which, const QSizeF &constraint,-
1091 const QAbstractLayoutStyleInfo *styleInfo) const-
1092{-
1093-
1094-
1095 if (hasDynamicConstraint() && rowCount() > 0 && columnCount() > 0) {-
1096 QGridLayoutBox sizehint_totalBoxes[NOrientations];-
1097 bool sizeHintCalculated = false;-
1098 if (constraintOrientation() == Qt::Vertical) {-
1099 //We have items whose height depends on their width-
1100 if (constraint.width() >= 0) {-
1101 ensureColumnAndRowData(&q_columnData, &sizehint_totalBoxes[Hor], NULL, NULL, Qt::Horizontal, styleInfo);-
1102 QVector<qreal> sizehint_xx;-
1103 QVector<qreal> sizehint_widths;-
1104-
1105 sizehint_xx.resize(columnCount());-
1106 sizehint_widths.resize(columnCount());-
1107 qreal width = constraint.width();-
1108 //Calculate column widths and positions, and put results in q_xx.data() and q_widths.data() so that we can use this information as-
1109 //constraints to find the row heights-
1110 q_columnData.calculateGeometries(0, columnCount(), width, sizehint_xx.data(), sizehint_widths.data(),-
1111 0, sizehint_totalBoxes[Hor], q_infos[Hor], m_snapToPixelGrid);-
1112 ensureColumnAndRowData(&q_rowData, &sizehint_totalBoxes[Ver], sizehint_xx.data(), sizehint_widths.data(), Qt::Vertical, styleInfo);-
1113 sizeHintCalculated = true;-
1114 }-
1115 } else {-
1116 if (constraint.height() >= 0) {-
1117 //We have items whose width depends on their height-
1118 ensureColumnAndRowData(&q_rowData, &sizehint_totalBoxes[Ver], NULL, NULL, Qt::Vertical, styleInfo);-
1119 QVector<qreal> sizehint_yy;-
1120 QVector<qreal> sizehint_heights;-
1121-
1122 sizehint_yy.resize(rowCount());-
1123 sizehint_heights.resize(rowCount());-
1124 qreal height = constraint.height();-
1125 //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() so that we can use this information as-
1126 //constraints to find the column widths-
1127 q_rowData.calculateGeometries(0, rowCount(), height, sizehint_yy.data(), sizehint_heights.data(),-
1128 0, sizehint_totalBoxes[Ver], q_infos[Ver], m_snapToPixelGrid);-
1129 ensureColumnAndRowData(&q_columnData, &sizehint_totalBoxes[Hor], sizehint_yy.data(), sizehint_heights.data(), Qt::Horizontal, styleInfo);-
1130 sizeHintCalculated = true;-
1131 }-
1132 }-
1133 if (sizeHintCalculated)-
1134 return QSizeF(sizehint_totalBoxes[Hor].q_sizes(which), sizehint_totalBoxes[Ver].q_sizes(which));-
1135 }-
1136-
1137 //No items with height for width, so it doesn't matter which order we do these in-
1138 ensureColumnAndRowData(&q_columnData, &q_totalBoxes[Hor], NULL, NULL, Qt::Horizontal, styleInfo);-
1139 ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], NULL, NULL, Qt::Vertical, styleInfo);-
1140 return QSizeF(q_totalBoxes[Hor].q_sizes(which), q_totalBoxes[Ver].q_sizes(which));-
1141}-
1142-
1143QLayoutPolicy::ControlTypes QGridLayoutEngine::controlTypes(LayoutSide side) const-
1144{-
1145 Qt::Orientation orientation = (side == Top || side == Bottom) ? Qt::Vertical : Qt::Horizontal;-
1146 int row = (side == Top || side == Left) ? effectiveFirstRow(orientation)-
1147 : effectiveLastRow(orientation);-
1148 QLayoutPolicy::ControlTypes result = 0;-
1149-
1150 for (int column = columnCount(orientation) - 1; column >= 0; --column) {-
1151 if (QGridLayoutItem *item = itemAt(row, column, orientation))-
1152 result |= item->controlTypes(side);-
1153 }-
1154 return result;-
1155}-
1156-
1157void QGridLayoutEngine::transpose()-
1158{-
1159 invalidate();-
1160-
1161 for (int i = q_items.count() - 1; i >= 0; --i)-
1162 q_items.at(i)->transpose();-
1163-
1164 qSwap(q_defaultSpacings[Hor], q_defaultSpacings[Ver]);-
1165 qSwap(q_infos[Hor], q_infos[Ver]);-
1166-
1167 regenerateGrid();-
1168}-
1169-
1170void QGridLayoutEngine::setVisualDirection(Qt::LayoutDirection direction)-
1171{-
1172 m_visualDirection = direction;-
1173}-
1174-
1175Qt::LayoutDirection QGridLayoutEngine::visualDirection() const-
1176{-
1177 return m_visualDirection;-
1178}-
1179-
1180#ifdef QGRIDLAYOUTENGINE_DEBUG-
1181void QGridLayoutEngine::dump(int indent) const-
1182{-
1183 qDebug("%*sEngine", indent, "");-
1184-
1185 qDebug("%*s Items (%d)", indent, "", q_items.count());-
1186 int i;-
1187 for (i = 0; i < q_items.count(); ++i)-
1188 q_items.at(i)->dump(indent + 2);-
1189-
1190 qDebug("%*s Grid (%d x %d)", indent, "", internalGridRowCount(),-
1191 internalGridColumnCount());-
1192 for (int row = 0; row < internalGridRowCount(); ++row) {-
1193 QString message = QLatin1String("[ ");-
1194 for (int column = 0; column < internalGridColumnCount(); ++column) {-
1195 message += QString::number(q_items.indexOf(itemAt(row, column))).rightJustified(3);-
1196 message += QLatin1Char(' ');-
1197 }-
1198 message += QLatin1Char(']');-
1199 qDebug("%*s %s", indent, "", qPrintable(message));-
1200 }-
1201-
1202 if (q_defaultSpacings[Hor].value() >= 0.0 || q_defaultSpacings[Ver].value() >= 0.0)-
1203 qDebug("%*s Default spacings: %g %g", indent, "", q_defaultSpacings[Hor].value(),-
1204 q_defaultSpacings[Ver].value());-
1205-
1206 qDebug("%*s Column and row info", indent, "");-
1207 q_infos[Hor].dump(indent + 2);-
1208 q_infos[Ver].dump(indent + 2);-
1209-
1210 qDebug("%*s Column and row data", indent, "");-
1211 q_columnData.dump(indent + 2);-
1212 q_rowData.dump(indent + 2);-
1213-
1214 qDebug("%*s Geometries output", indent, "");-
1215 QVector<qreal> *cellPos = &q_yy;-
1216 for (int pass = 0; pass < 2; ++pass) {-
1217 QString message;-
1218 for (i = 0; i < cellPos->count(); ++i) {-
1219 message += QLatin1String((message.isEmpty() ? "[" : ", "));-
1220 message += QString::number(cellPos->at(i));-
1221 }-
1222 message += QLatin1Char(']');-
1223 qDebug("%*s %s %s", indent, "", (pass == 0 ? "rows:" : "columns:"), qPrintable(message));-
1224 cellPos = &q_xx;-
1225 }-
1226}-
1227#endif-
1228-
1229void QGridLayoutEngine::maybeExpandGrid(int row, int column, Qt::Orientation orientation)-
1230{-
1231 invalidate(); // ### move out of here?-
1232-
1233 if (orientation == Qt::Horizontal)-
1234 qSwap(row, column);-
1235-
1236 if (row < rowCount() && column < columnCount())-
1237 return;-
1238-
1239 int oldGridRowCount = internalGridRowCount();-
1240 int oldGridColumnCount = internalGridColumnCount();-
1241-
1242 q_infos[Ver].count = qMax(row + 1, rowCount());-
1243 q_infos[Hor].count = qMax(column + 1, columnCount());-
1244-
1245 int newGridRowCount = internalGridRowCount();-
1246 int newGridColumnCount = internalGridColumnCount();-
1247-
1248 int newGridSize = newGridRowCount * newGridColumnCount;-
1249 if (newGridSize != q_grid.count()) {-
1250 q_grid.resize(newGridSize);-
1251-
1252 if (newGridColumnCount != oldGridColumnCount) {-
1253 for (int i = oldGridRowCount - 1; i >= 1; --i) {-
1254 for (int j = oldGridColumnCount - 1; j >= 0; --j) {-
1255 int oldIndex = (i * oldGridColumnCount) + j;-
1256 int newIndex = (i * newGridColumnCount) + j;-
1257-
1258 Q_ASSERT(newIndex > oldIndex);-
1259 q_grid[newIndex] = q_grid[oldIndex];-
1260 q_grid[oldIndex] = 0;-
1261 }-
1262 }-
1263 }-
1264 }-
1265}-
1266-
1267void QGridLayoutEngine::regenerateGrid()-
1268{-
1269 q_grid.fill(0);-
1270-
1271 for (int i = q_items.count() - 1; i >= 0; --i) {-
1272 QGridLayoutItem *item = q_items.at(i);-
1273-
1274 for (int j = item->firstRow(); j <= item->lastRow(); ++j) {-
1275 for (int k = item->firstColumn(); k <= item->lastColumn(); ++k) {-
1276 setItemAt(j, k, item);-
1277 }-
1278 }-
1279 }-
1280}-
1281-
1282void QGridLayoutEngine::setItemAt(int row, int column, QGridLayoutItem *item)-
1283{-
1284 Q_ASSERT(row >= 0 && row < rowCount());-
1285 Q_ASSERT(column >= 0 && column < columnCount());-
1286 q_grid[(row * internalGridColumnCount()) + column] = item;-
1287}-
1288-
1289void QGridLayoutEngine::insertOrRemoveRows(int row, int delta, Qt::Orientation orientation)-
1290{-
1291 int oldRowCount = rowCount(orientation);-
1292 Q_ASSERT(uint(row) <= uint(oldRowCount));-
1293-
1294 invalidate();-
1295-
1296 // appending rows (or columns) is easy-
1297 if (row == oldRowCount && delta > 0) {-
1298 maybeExpandGrid(oldRowCount + delta - 1, -1, orientation);-
1299 return;-
1300 }-
1301-
1302 q_infos[orientation == Qt::Vertical].insertOrRemoveRows(row, delta);-
1303-
1304 for (int i = q_items.count() - 1; i >= 0; --i)-
1305 q_items.at(i)->insertOrRemoveRows(row, delta, orientation);-
1306-
1307 q_grid.resize(internalGridRowCount() * internalGridColumnCount());-
1308 regenerateGrid();-
1309}-
1310-
1311void QGridLayoutEngine::fillRowData(QGridLayoutRowData *rowData,-
1312 const qreal *colPositions, const qreal *colSizes,-
1313 Qt::Orientation orientation,-
1314 const QAbstractLayoutStyleInfo *styleInfo) const-
1315{-
1316 const int ButtonMask = QLayoutPolicy::ButtonBox | QLayoutPolicy::PushButton;-
1317 const QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical];-
1318 const QGridLayoutRowInfo &columnInfo = q_infos[orientation == Qt::Horizontal];-
1319 LayoutSide top = (orientation == Qt::Vertical) ? Top : Left;
(orientation == Qt::Vertical)Description
TRUEnever evaluated
FALSEnever evaluated
0
1320 LayoutSide bottom = (orientation == Qt::Vertical) ? Bottom : Right;
(orientation == Qt::Vertical)Description
TRUEnever evaluated
FALSEnever evaluated
0
1321-
1322 const QLayoutParameter<qreal> &defaultSpacing = q_defaultSpacings[orientation == Qt::Vertical];-
1323 qreal innerSpacing = styleInfo->spacing(orientation);-
1324 if (innerSpacing >= 0.0)
innerSpacing >= 0.0Description
TRUEnever evaluated
FALSEnever evaluated
0
1325 defaultSpacing.setCachedValue(innerSpacing);
never executed: defaultSpacing.setCachedValue(innerSpacing);
0
1326-
1327 for (int row = 0; row < rowInfo.count; ++row) {
row < rowInfo.countDescription
TRUEnever evaluated
FALSEnever evaluated
0
1328 bool rowIsEmpty = true;-
1329 bool rowIsIdenticalToPrevious = (row > 0);-
1330-
1331 for (int column = 0; column < columnInfo.count; ++column) {
column < columnInfo.countDescription
TRUEnever evaluated
FALSEnever evaluated
0
1332 QGridLayoutItem *item = itemAt(row, column, orientation);-
1333-
1334 if (rowIsIdenticalToPrevious && item != itemAt(row - 1, column, orientation))
rowIsIdenticalToPreviousDescription
TRUEnever evaluated
FALSEnever evaluated
item != itemAt..., orientation)Description
TRUEnever evaluated
FALSEnever evaluated
0
1335 rowIsIdenticalToPrevious = false;
never executed: rowIsIdenticalToPrevious = false;
0
1336-
1337 if (item && !item->isIgnored())
itemDescription
TRUEnever evaluated
FALSEnever evaluated
!item->isIgnored()Description
TRUEnever evaluated
FALSEnever evaluated
0
1338 rowIsEmpty = false;
never executed: rowIsEmpty = false;
0
1339 }
never executed: end of block
0
1340-
1341 if ((rowIsEmpty || rowIsIdenticalToPrevious)
rowIsEmptyDescription
TRUEnever evaluated
FALSEnever evaluated
rowIsIdenticalToPreviousDescription
TRUEnever evaluated
FALSEnever evaluated
0
1342 && rowInfo.spacings.value(row).isDefault()
rowInfo.spacin...w).isDefault()Description
TRUEnever evaluated
FALSEnever evaluated
0
1343 && rowInfo.stretches.value(row).isDefault()
rowInfo.stretc...w).isDefault()Description
TRUEnever evaluated
FALSEnever evaluated
0
1344 && rowInfo.boxes.value(row) == QGridLayoutBox())
rowInfo.boxes....ridLayoutBox()Description
TRUEnever evaluated
FALSEnever evaluated
0
1345 rowData->ignore.setBit(row, true);
never executed: rowData->ignore.setBit(row, true);
0
1346-
1347 if (rowInfo.spacings.value(row).isUser()) {
rowInfo.spacin...(row).isUser()Description
TRUEnever evaluated
FALSEnever evaluated
0
1348 rowData->spacings[row] = rowInfo.spacings.at(row).value();-
1349 } else if (!defaultSpacing.isDefault()) {
never executed: end of block
!defaultSpacing.isDefault()Description
TRUEnever evaluated
FALSEnever evaluated
0
1350 rowData->spacings[row] = defaultSpacing.value();-
1351 }
never executed: end of block
0
1352-
1353 rowData->stretches[row] = rowInfo.stretches.value(row).value();-
1354 }
never executed: end of block
0
1355-
1356 struct RowAdHocData {-
1357 int q_row;-
1358 unsigned int q_hasButtons : 8;-
1359 unsigned int q_hasNonButtons : 8;-
1360-
1361 inline RowAdHocData() : q_row(-1), q_hasButtons(false), q_hasNonButtons(false) {}-
1362 inline void init(int row) {-
1363 this->q_row = row;-
1364 q_hasButtons = false;-
1365 q_hasNonButtons = false;-
1366 }-
1367 inline bool hasOnlyButtons() const { return q_hasButtons && !q_hasNonButtons; }-
1368 inline bool hasOnlyNonButtons() const { return q_hasNonButtons && !q_hasButtons; }-
1369 };-
1370 RowAdHocData lastRowAdHocData;-
1371 RowAdHocData nextToLastRowAdHocData;-
1372 RowAdHocData nextToNextToLastRowAdHocData;-
1373-
1374 rowData->hasIgnoreFlag = false;-
1375 for (int row = 0; row < rowInfo.count; ++row) {
row < rowInfo.countDescription
TRUEnever evaluated
FALSEnever evaluated
0
1376 if (rowData->ignore.testBit(row))
rowData->ignore.testBit(row)Description
TRUEnever evaluated
FALSEnever evaluated
0
1377 continue;
never executed: continue;
0
1378-
1379 QGridLayoutBox &rowBox = rowData->boxes[row];-
1380 if (styleInfo->isWindow()) {
styleInfo->isWindow()Description
TRUEnever evaluated
FALSEnever evaluated
0
1381 nextToNextToLastRowAdHocData = nextToLastRowAdHocData;-
1382 nextToLastRowAdHocData = lastRowAdHocData;-
1383 lastRowAdHocData.init(row);-
1384 }
never executed: end of block
0
1385-
1386 bool userRowStretch = rowInfo.stretches.value(row).isUser();-
1387 int &rowStretch = rowData->stretches[row];-
1388-
1389 bool hasIgnoreFlag = true;-
1390 for (int column = 0; column < columnInfo.count; ++column) {
column < columnInfo.countDescription
TRUEnever evaluated
FALSEnever evaluated
0
1391 QGridLayoutItem *item = itemAt(row, column, orientation);-
1392 if (item) {
itemDescription
TRUEnever evaluated
FALSEnever evaluated
0
1393 int itemRow = item->firstRow(orientation);-
1394 int itemColumn = item->firstColumn(orientation);-
1395-
1396 if (itemRow == row && itemColumn == column) {
itemRow == rowDescription
TRUEnever evaluated
FALSEnever evaluated
itemColumn == columnDescription
TRUEnever evaluated
FALSEnever evaluated
0
1397 int itemStretch = item->stretchFactor(orientation);-
1398 if (!(item->sizePolicy(orientation) & QLayoutPolicy::IgnoreFlag))
!(item->sizePo...y::IgnoreFlag)Description
TRUEnever evaluated
FALSEnever evaluated
0
1399 hasIgnoreFlag = false;
never executed: hasIgnoreFlag = false;
0
1400 int itemRowSpan = item->rowSpan(orientation);-
1401-
1402 int effectiveRowSpan = 1;-
1403 for (int i = 1; i < itemRowSpan; ++i) {
i < itemRowSpanDescription
TRUEnever evaluated
FALSEnever evaluated
0
1404 if (!rowData->ignore.testBit(i + itemRow))
!rowData->igno...t(i + itemRow)Description
TRUEnever evaluated
FALSEnever evaluated
0
1405 ++effectiveRowSpan;
never executed: ++effectiveRowSpan;
0
1406 }
never executed: end of block
0
1407-
1408 QGridLayoutBox *box;-
1409 if (effectiveRowSpan == 1) {
effectiveRowSpan == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1410 box = &rowBox;-
1411 if (!userRowStretch && itemStretch != 0)
!userRowStretchDescription
TRUEnever evaluated
FALSEnever evaluated
itemStretch != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
1412 rowStretch = qMax(rowStretch, itemStretch);
never executed: rowStretch = qMax(rowStretch, itemStretch);
0
1413 } else {
never executed: end of block
0
1414 QGridLayoutMultiCellData &multiCell =-
1415 rowData->multiCellMap[qMakePair(row, itemRowSpan)];-
1416 box = &multiCell.q_box;-
1417 multiCell.q_stretch = itemStretch;-
1418 }
never executed: end of block
0
1419 // Items with constraints need to be passed the constraint-
1420 if (colSizes && colPositions && item->hasDynamicConstraint() && orientation == item->dynamicConstraintOrientation()) {
colSizesDescription
TRUEnever evaluated
FALSEnever evaluated
colPositionsDescription
TRUEnever evaluated
FALSEnever evaluated
item->hasDynamicConstraint()Description
TRUEnever evaluated
FALSEnever evaluated
orientation ==...tOrientation()Description
TRUEnever evaluated
FALSEnever evaluated
0
1421 /* Get the width of the item by summing up the widths of the columns that it spans.-
1422 * We need to have already calculated the widths of the columns by calling-
1423 * q_columns->calculateGeometries() before hand and passing the value in the colSizes-
1424 * and colPositions parameters.-
1425 * The variable name is still colSizes even when it actually has the row sizes-
1426 */-
1427 qreal length = colSizes[item->lastColumn(orientation)];-
1428 if (item->columnSpan(orientation) != 1)
item->columnSp...entation) != 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1429 length += colPositions[item->lastColumn(orientation)] - colPositions[item->firstColumn(orientation)];
never executed: length += colPositions[item->lastColumn(orientation)] - colPositions[item->firstColumn(orientation)];
0
1430 box->combine(item->box(orientation, m_snapToPixelGrid, length));-
1431 } else {
never executed: end of block
0
1432 box->combine(item->box(orientation, m_snapToPixelGrid));-
1433 }
never executed: end of block
0
1434-
1435 if (effectiveRowSpan == 1) {
effectiveRowSpan == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1436 QLayoutPolicy::ControlTypes controls = item->controlTypes(top);-
1437 if (controls & ButtonMask)
controls & ButtonMaskDescription
TRUEnever evaluated
FALSEnever evaluated
0
1438 lastRowAdHocData.q_hasButtons = true;
never executed: lastRowAdHocData.q_hasButtons = true;
0
1439 if (controls & ~ButtonMask)
controls & ~ButtonMaskDescription
TRUEnever evaluated
FALSEnever evaluated
0
1440 lastRowAdHocData.q_hasNonButtons = true;
never executed: lastRowAdHocData.q_hasNonButtons = true;
0
1441 }
never executed: end of block
0
1442 }
never executed: end of block
0
1443 }
never executed: end of block
0
1444 }
never executed: end of block
0
1445 if (row < rowInfo.boxes.count()) {
row < rowInfo.boxes.count()Description
TRUEnever evaluated
FALSEnever evaluated
0
1446 QGridLayoutBox rowBoxInfo = rowInfo.boxes.at(row);-
1447 rowBoxInfo.normalize();-
1448 rowBox.q_minimumSize = qMax(rowBox.q_minimumSize, rowBoxInfo.q_minimumSize);-
1449 rowBox.q_maximumSize = qMax(rowBox.q_minimumSize,-
1450 (rowBoxInfo.q_maximumSize != FLT_MAX ?-
1451 rowBoxInfo.q_maximumSize : rowBox.q_maximumSize));-
1452 rowBox.q_preferredSize = qBound(rowBox.q_minimumSize,-
1453 qMax(rowBox.q_preferredSize, rowBoxInfo.q_preferredSize),-
1454 rowBox.q_maximumSize);-
1455 }
never executed: end of block
0
1456 if (hasIgnoreFlag)
hasIgnoreFlagDescription
TRUEnever evaluated
FALSEnever evaluated
0
1457 rowData->hasIgnoreFlag = true;
never executed: rowData->hasIgnoreFlag = true;
0
1458 }
never executed: end of block
0
1459-
1460 /*-
1461 Heuristic: Detect button boxes that don't use QLayoutPolicy::ButtonBox.-
1462 This is somewhat ad hoc but it usually does the trick.-
1463 */-
1464 bool lastRowIsButtonBox = (lastRowAdHocData.hasOnlyButtons()
lastRowAdHocDa...sOnlyButtons()Description
TRUEnever evaluated
FALSEnever evaluated
0
1465 && nextToLastRowAdHocData.hasOnlyNonButtons());
nextToLastRowA...lyNonButtons()Description
TRUEnever evaluated
FALSEnever evaluated
0
1466 bool lastTwoRowsIsButtonBox = (lastRowAdHocData.hasOnlyButtons()
lastRowAdHocDa...sOnlyButtons()Description
TRUEnever evaluated
FALSEnever evaluated
0
1467 && nextToLastRowAdHocData.hasOnlyButtons()
nextToLastRowA...sOnlyButtons()Description
TRUEnever evaluated
FALSEnever evaluated
0
1468 && nextToNextToLastRowAdHocData.hasOnlyNonButtons()
nextToNextToLa...lyNonButtons()Description
TRUEnever evaluated
FALSEnever evaluated
0
1469 && orientation == Qt::Vertical);
orientation == Qt::VerticalDescription
TRUEnever evaluated
FALSEnever evaluated
0
1470-
1471 if (defaultSpacing.isDefault()) {
defaultSpacing.isDefault()Description
TRUEnever evaluated
FALSEnever evaluated
0
1472 int prevRow = -1;-
1473 for (int row = 0; row < rowInfo.count; ++row) {
row < rowInfo.countDescription
TRUEnever evaluated
FALSEnever evaluated
0
1474 if (rowData->ignore.testBit(row))
rowData->ignore.testBit(row)Description
TRUEnever evaluated
FALSEnever evaluated
0
1475 continue;
never executed: continue;
0
1476-
1477 if (prevRow != -1 && !rowInfo.spacings.value(prevRow).isUser()) {
prevRow != -1Description
TRUEnever evaluated
FALSEnever evaluated
!rowInfo.spaci...vRow).isUser()Description
TRUEnever evaluated
FALSEnever evaluated
0
1478 qreal &rowSpacing = rowData->spacings[prevRow];-
1479 for (int column = 0; column < columnInfo.count; ++column) {
column < columnInfo.countDescription
TRUEnever evaluated
FALSEnever evaluated
0
1480 QGridLayoutItem *item1 = itemAt(prevRow, column, orientation);-
1481 QGridLayoutItem *item2 = itemAt(row, column, orientation);-
1482-
1483 if (item1 && item2 && item1 != item2) {
item1Description
TRUEnever evaluated
FALSEnever evaluated
item2Description
TRUEnever evaluated
FALSEnever evaluated
item1 != item2Description
TRUEnever evaluated
FALSEnever evaluated
0
1484 QLayoutPolicy::ControlTypes controls1 = item1->controlTypes(bottom);-
1485 QLayoutPolicy::ControlTypes controls2 = item2->controlTypes(top);-
1486-
1487 if (controls2 & QLayoutPolicy::PushButton) {
controls2 & QL...cy::PushButtonDescription
TRUEnever evaluated
FALSEnever evaluated
0
1488 if ((row == nextToLastRowAdHocData.q_row && lastTwoRowsIsButtonBox)
row == nextToL...dHocData.q_rowDescription
TRUEnever evaluated
FALSEnever evaluated
lastTwoRowsIsButtonBoxDescription
TRUEnever evaluated
FALSEnever evaluated
0
1489 || (row == lastRowAdHocData.q_row && lastRowIsButtonBox)) {
row == lastRowAdHocData.q_rowDescription
TRUEnever evaluated
FALSEnever evaluated
lastRowIsButtonBoxDescription
TRUEnever evaluated
FALSEnever evaluated
0
1490 controls2 &= ~QLayoutPolicy::PushButton;-
1491 controls2 |= QLayoutPolicy::ButtonBox;-
1492 }
never executed: end of block
0
1493 }
never executed: end of block
0
1494-
1495 qreal spacing = styleInfo->combinedLayoutSpacing(controls1, controls2,-
1496 orientation);-
1497 if (orientation == Qt::Horizontal) {
orientation == Qt::HorizontalDescription
TRUEnever evaluated
FALSEnever evaluated
0
1498 qreal width1 = rowData->boxes.at(prevRow).q_minimumSize;-
1499 qreal width2 = rowData->boxes.at(row).q_minimumSize;-
1500 QRectF rect1 = item1->geometryWithin(0.0, 0.0, width1, FLT_MAX, -1.0, effectiveAlignment(item1));), m_snapToPixelGrid);-
1501 QRectF rect2 = item2->geometryWithin(0.0, 0.0, width2, FLT_MAX, -1.0, effectiveAlignment(item2));), m_snapToPixelGrid);-
1502 spacing -= (width1 - (rect1.x() + rect1.width())) + rect2.x();-
1503 } else {
never executed: end of block
0
1504 const QGridLayoutBox &box1 = rowData->boxes.at(prevRow);-
1505 const QGridLayoutBox &box2 = rowData->boxes.at(row);-
1506 qreal height1 = box1.q_minimumSize;-
1507 qreal height2 = box2.q_minimumSize;-
1508 qreal rowDescent1 = fixedDescent(box1.q_minimumDescent,-
1509 box1.q_minimumAscent, height1);-
1510 qreal rowDescent2 = fixedDescent(box2.q_minimumDescent,-
1511 box2.q_minimumAscent, height2);-
1512 QRectF rect1 = item1->geometryWithin(0.0, 0.0, FLT_MAX, height1,-
1513 rowDescent1, effectiveAlignment(item1));), m_snapToPixelGrid);-
1514 QRectF rect2 = item2->geometryWithin(0.0, 0.0, FLT_MAX, height2,-
1515 rowDescent2, effectiveAlignment(item2));), m_snapToPixelGrid);-
1516 spacing -= (height1 - (rect1.y() + rect1.height())) + rect2.y();-
1517 }
never executed: end of block
0
1518 rowSpacing = qMax(spacing, rowSpacing);-
1519 }
never executed: end of block
0
1520 }
never executed: end of block
0
1521 }
never executed: end of block
0
1522 prevRow = row;-
1523 }
never executed: end of block
0
1524 } else if (lastRowIsButtonBox || lastTwoRowsIsButtonBox) {
never executed: end of block
lastRowIsButtonBoxDescription
TRUEnever evaluated
FALSEnever evaluated
lastTwoRowsIsButtonBoxDescription
TRUEnever evaluated
FALSEnever evaluated
0
1525 /*-
1526 Even for styles that define a uniform spacing, we cheat a-
1527 bit and use the window margin as the spacing. This-
1528 significantly improves the look of dialogs.-
1529 */-
1530 int prevRow = lastRowIsButtonBox ? nextToLastRowAdHocData.q_row
lastRowIsButtonBoxDescription
TRUEnever evaluated
FALSEnever evaluated
0
1531 : nextToNextToLastRowAdHocData.q_row;-
1532 if (!defaultSpacing.isUser() && !rowInfo.spacings.value(prevRow).isUser()) {
!defaultSpacing.isUser()Description
TRUEnever evaluated
FALSEnever evaluated
!rowInfo.spaci...vRow).isUser()Description
TRUEnever evaluated
FALSEnever evaluated
0
1533 qreal windowMargin = styleInfo->windowMargin(orientation);-
1534 qreal &rowSpacing = rowData->spacings[prevRow];-
1535 rowSpacing = qMax(windowMargin, rowSpacing);-
1536 }
never executed: end of block
0
1537 }
never executed: end of block
0
1538}
never executed: end of block
0
1539-
1540void QGridLayoutEngine::ensureEffectiveFirstAndLastRows() const-
1541{-
1542 if (q_cachedEffectiveFirstRows[Hor] == -1 && !q_items.isEmpty()) {-
1543 int rowCount = this->rowCount();-
1544 int columnCount = this->columnCount();-
1545-
1546 q_cachedEffectiveFirstRows[Ver] = rowCount;-
1547 q_cachedEffectiveFirstRows[Hor] = columnCount;-
1548 q_cachedEffectiveLastRows[Ver] = -1;-
1549 q_cachedEffectiveLastRows[Hor] = -1;-
1550-
1551 for (int i = q_items.count() - 1; i >= 0; --i) {-
1552 const QGridLayoutItem *item = q_items.at(i);-
1553-
1554 for (int j = 0; j < NOrientations; ++j) {-
1555 Qt::Orientation orientation = (j == Hor) ? Qt::Horizontal : Qt::Vertical;-
1556 if (item->firstRow(orientation) < q_cachedEffectiveFirstRows[j])-
1557 q_cachedEffectiveFirstRows[j] = item->firstRow(orientation);-
1558 if (item->lastRow(orientation) > q_cachedEffectiveLastRows[j])-
1559 q_cachedEffectiveLastRows[j] = item->lastRow(orientation);-
1560 }-
1561 }-
1562 }-
1563}-
1564-
1565void QGridLayoutEngine::ensureColumnAndRowData(QGridLayoutRowData *rowData, QGridLayoutBox *totalBox,-
1566 const qreal *colPositions, const qreal *colSizes,-
1567 Qt::Orientation orientation,-
1568 const QAbstractLayoutStyleInfo *styleInfo) const-
1569{-
1570 const int o = (orientation == Qt::Vertical ? Ver : Hor);-
1571 const int cc = columnCount(orientation);-
1572-
1573 const qreal constraint = (colPositions && colSizes && hasDynamicConstraint()) ? (colPositions[cc - 1] + colSizes[cc - 1]) : qreal(CachedWithNoConstraint);-
1574 qreal &cachedConstraint = q_totalBoxCachedConstraints[o];-
1575 if (cachedConstraint == constraint) {-
1576 if (totalBox != &q_totalBoxes[o])-
1577 *totalBox = q_totalBoxes[o];-
1578 return;-
1579 }-
1580 rowData->reset(rowCount(orientation));-
1581 fillRowData(rowData, colPositions, colSizes, orientation, styleInfo);-
1582 const QGridLayoutRowInfo &rowInfo = q_infos[orientation == Qt::Vertical];-
1583 rowData->distributeMultiCells(rowInfo, m_snapToPixelGrid);-
1584 *totalBox = rowData->totalBox(0, rowCount(orientation));-
1585-
1586 if (totalBox != &q_totalBoxes[o])-
1587 q_totalBoxes[o] = *totalBox;-
1588-
1589 cachedConstraint = constraint;-
1590}-
1591-
1592/**-
1593 returns false if the layout has contradicting constraints (i.e. some items with a horizontal-
1594 constraint and other items with a vertical constraint)-
1595 */-
1596bool QGridLayoutEngine::ensureDynamicConstraint() const-
1597{-
1598 if (q_cachedConstraintOrientation == UnknownConstraint) {-
1599 for (int i = q_items.count() - 1; i >= 0; --i) {-
1600 QGridLayoutItem *item = q_items.at(i);-
1601 if (item->hasDynamicConstraint()) {-
1602 Qt::Orientation itemConstraintOrientation = item->dynamicConstraintOrientation();-
1603 if (q_cachedConstraintOrientation == UnknownConstraint) {-
1604 q_cachedConstraintOrientation = itemConstraintOrientation;-
1605 } else if (q_cachedConstraintOrientation != itemConstraintOrientation) {-
1606 q_cachedConstraintOrientation = UnfeasibleConstraint;-
1607 qWarning("QGridLayoutEngine: Unfeasible, cannot mix horizontal and"-
1608 " vertical constraint in the same layout");-
1609 return false;-
1610 }-
1611 }-
1612 }-
1613 if (q_cachedConstraintOrientation == UnknownConstraint)-
1614 q_cachedConstraintOrientation = NoConstraint;-
1615 }-
1616 return true;-
1617}-
1618-
1619bool QGridLayoutEngine::hasDynamicConstraint() const-
1620{-
1621 if (!ensureDynamicConstraint())-
1622 return false;-
1623 return q_cachedConstraintOrientation != NoConstraint;-
1624}-
1625-
1626/*-
1627 * return value is only valid if hasConstraint() returns \c true-
1628 */-
1629Qt::Orientation QGridLayoutEngine::constraintOrientation() const-
1630{-
1631 (void)ensureDynamicConstraint();-
1632 return (Qt::Orientation)q_cachedConstraintOrientation;-
1633}-
1634-
1635void QGridLayoutEngine::ensureGeometries(const QSizeF &size,-
1636 const QAbstractLayoutStyleInfo *styleInfo) const-
1637{-
1638 if (q_cachedSize == size)-
1639 return;-
1640-
1641 q_cachedSize = size;-
1642-
1643 q_xx.resize(columnCount());-
1644 q_widths.resize(columnCount());-
1645 q_yy.resize(rowCount());-
1646 q_heights.resize(rowCount());-
1647 q_descents.resize(rowCount());-
1648-
1649 if (constraintOrientation() != Qt::Horizontal) {-
1650 //We might have items whose height depends on their width (HFW)-
1651 ensureColumnAndRowData(&q_columnData, &q_totalBoxes[Hor], NULL, NULL, Qt::Horizontal, styleInfo);-
1652 //Calculate column widths and positions, and put results in q_xx.data() and q_widths.data() so that we can use this information as-
1653 //constraints to find the row heights-
1654 q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(),-
1655 0, q_totalBoxes[Hor], q_infos[Hor], m_snapToPixelGrid);-
1656 ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], q_xx.data(), q_widths.data(), Qt::Vertical, styleInfo);-
1657 //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data()-
1658 q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(),-
1659 q_descents.data(), q_totalBoxes[Ver], q_infos[Ver], m_snapToPixelGrid);-
1660 } else {-
1661 //We have items whose width depends on their height (WFH)-
1662 ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], NULL, NULL, Qt::Vertical, styleInfo);-
1663 //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() so that we can use this information as-
1664 //constraints to find the column widths-
1665 q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(),-
1666 q_descents.data(), q_totalBoxes[Ver], q_infos[Ver], m_snapToPixelGrid);-
1667 ensureColumnAndRowData(&q_columnData, &q_totalBoxes[Hor], q_yy.data(), q_heights.data(), Qt::Horizontal, styleInfo);-
1668 //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data()-
1669 q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(),-
1670 0, q_totalBoxes[Hor], q_infos[Hor], m_snapToPixelGrid);-
1671 }-
1672}-
1673-
1674QT_END_NAMESPACE-
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