qlayoutengine.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 QtWidgets module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
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-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qlayout.h"-
41#include "private/qlayoutengine_p.h"-
42-
43#include "qvector.h"-
44#include "qwidget.h"-
45-
46#include <qvarlengtharray.h>-
47#include <qdebug.h>-
48-
49#include <algorithm>-
50-
51QT_BEGIN_NAMESPACE-
52-
53//#define QLAYOUT_EXTRA_DEBUG-
54-
55typedef qint64 Fixed64;-
56static
never executed: return (Fixed64)i * 256;
 inline Fixed64 toFixed(int i) { return (Fixed64)i * 256; }
never executed: return (Fixed64)i * 256;
0
57static inline int fRound(Fixed64 i) {-
58 return (i % 256 < 128) ? i / 256 : 1 + i / 256;
never executed: return (i % 256 < 128) ? i / 256 : 1 + i / 256;
0
59}-
60-
61/*-
62 This is the main workhorse of the QGridLayout. It portions out-
63 available space to the chain's children.-
64-
65 The calculation is done in fixed point: "fixed" variables are-
66 scaled by a factor of 256.-
67-
68 If the layout runs "backwards" (i.e. RightToLeft or Up) the layout-
69 is computed mirror-reversed, and it's the caller's responsibility-
70 do reverse the values before use.-
71-
72 chain contains input and output parameters describing the geometry.-
73 count is the count of items in the chain; pos and space give the-
74 interval (relative to parentWidget topLeft).-
75*/-
76void qGeomCalc(QVector<QLayoutStruct> &chain, int start, int count,-
77 int pos, int space, int spacer)-
78{-
79 int cHint = 0;-
80 int cMin = 0;-
81 int cMax = 0;-
82 int sumStretch = 0;-
83 int sumSpacing = 0;-
84 int expandingCount = 0;-
85-
86 bool allEmptyNonstretch = true;-
87 int pendingSpacing = -1;-
88 int spacerCount = 0;-
89 int i;-
90-
91 for (i = start; i < start + count; i++) {
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
92 QLayoutStruct *data = &chain[i];-
93-
94 data->done = false;-
95 cHint += data->smartSizeHint();-
96 cMin += data->minimumSize;-
97 cMax += data->maximumSize;-
98 sumStretch += data->stretch;-
99 if (!data->empty) {
!data->emptyDescription
TRUEnever evaluated
FALSEnever evaluated
0
100 /*-
101 Using pendingSpacing, we ensure that the spacing for the last-
102 (non-empty) item is ignored.-
103 */-
104 if (pendingSpacing >= 0) {
pendingSpacing >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
105 sumSpacing += pendingSpacing;-
106 ++spacerCount;-
107 }
never executed: end of block
0
108 pendingSpacing = data->effectiveSpacer(spacer);-
109 }
never executed: end of block
0
110 if (data->expansive)
data->expansiveDescription
TRUEnever evaluated
FALSEnever evaluated
0
111 expandingCount++;
never executed: expandingCount++;
0
112 allEmptyNonstretch = allEmptyNonstretch && data->empty && !data->expansive && data->stretch <= 0;
allEmptyNonstretchDescription
TRUEnever evaluated
FALSEnever evaluated
data->emptyDescription
TRUEnever evaluated
FALSEnever evaluated
!data->expansiveDescription
TRUEnever evaluated
FALSEnever evaluated
data->stretch <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
113 }
never executed: end of block
0
114-
115 int extraspace = 0;-
116-
117 if (space < cMin + sumSpacing) {
space < cMin + sumSpacingDescription
TRUEnever evaluated
FALSEnever evaluated
0
118 /*-
119 Less space than minimumSize; take from the biggest first-
120 */-
121-
122 int minSize = cMin + sumSpacing;-
123-
124 // shrink the spacers proportionally-
125 if (spacer >= 0) {
spacer >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
126 spacer = minSize > 0 ? spacer * space / minSize : 0;
minSize > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
127 sumSpacing = spacer * spacerCount;-
128 }
never executed: end of block
0
129-
130 QVarLengthArray<int, 32> minimumSizes;-
131 minimumSizes.reserve(count);-
132-
133 for (i = start; i < start + count; i++)
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
134 minimumSizes << chain.at(i).minimumSize;
never executed: minimumSizes << chain.at(i).minimumSize;
0
135-
136 std::sort(minimumSizes.begin(), minimumSizes.end());-
137-
138 int space_left = space - sumSpacing;-
139-
140 int sum = 0;-
141 int idx = 0;-
142 int space_used=0;-
143 int current = 0;-
144 while (idx < count && space_used < space_left) {
idx < countDescription
TRUEnever evaluated
FALSEnever evaluated
space_used < space_leftDescription
TRUEnever evaluated
FALSEnever evaluated
0
145 current = minimumSizes.at(idx);-
146 space_used = sum + current * (count - idx);-
147 sum += current;-
148 ++idx;-
149 }
never executed: end of block
0
150 --idx;-
151 int deficit = space_used - space_left;-
152-
153 int items = count - idx;-
154 /*-
155 * If we truncate all items to "current", we would get "deficit" too many pixels. Therefore, we have to remove-
156 * deficit/items from each item bigger than maxval. The actual value to remove is deficitPerItem + remainder/items-
157 * "rest" is the accumulated error from using integer arithmetic.-
158 */-
159 int deficitPerItem = deficit/items;-
160 int remainder = deficit % items;-
161 int maxval = current - deficitPerItem;-
162-
163 int rest = 0;-
164 for (i = start; i < start + count; i++) {
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
165 int maxv = maxval;-
166 rest += remainder;-
167 if (rest >= items) {
rest >= itemsDescription
TRUEnever evaluated
FALSEnever evaluated
0
168 maxv--;-
169 rest-=items;-
170 }
never executed: end of block
0
171 QLayoutStruct *data = &chain[i];-
172 data->size = qMin(data->minimumSize, maxv);-
173 data->done = true;-
174 }
never executed: end of block
0
175 } else if (space < cHint + sumSpacing) {
never executed: end of block
space < cHint + sumSpacingDescription
TRUEnever evaluated
FALSEnever evaluated
0
176 /*-
177 Less space than smartSizeHint(), but more than minimumSize.-
178 Currently take space equally from each, as in Qt 2.x.-
179 Commented-out lines will give more space to stretchier-
180 items.-
181 */-
182 int n = count;-
183 int space_left = space - sumSpacing;-
184 int overdraft = cHint - space_left;-
185-
186 // first give to the fixed ones:-
187 for (i = start; i < start + count; i++) {
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
188 QLayoutStruct *data = &chain[i];-
189 if (!data->done
!data->doneDescription
TRUEnever evaluated
FALSEnever evaluated
0
190 && data->minimumSize >= data->smartSizeHint()) {
data->minimumS...martSizeHint()Description
TRUEnever evaluated
FALSEnever evaluated
0
191 data->size = data->smartSizeHint();-
192 data->done = true;-
193 space_left -= data->smartSizeHint();-
194 // sumStretch -= data->stretch;-
195 n--;-
196 }
never executed: end of block
0
197 }
never executed: end of block
0
198 bool finished = n == 0;-
199 while (!finished) {
!finishedDescription
TRUEnever evaluated
FALSEnever evaluated
0
200 finished = true;-
201 Fixed64 fp_over = toFixed(overdraft);-
202 Fixed64 fp_w = 0;-
203-
204 for (i = start; i < start+count; i++) {
i < start+countDescription
TRUEnever evaluated
FALSEnever evaluated
0
205 QLayoutStruct *data = &chain[i];-
206 if (data->done)
data->doneDescription
TRUEnever evaluated
FALSEnever evaluated
0
207 continue;
never executed: continue;
0
208 // if (sumStretch <= 0)-
209 fp_w += fp_over / n;-
210 // else-
211 // fp_w += (fp_over * data->stretch) / sumStretch;-
212 int w = fRound(fp_w);-
213 data->size = data->smartSizeHint() - w;-
214 fp_w -= toFixed(w); // give the difference to the next-
215 if (data->size < data->minimumSize) {
data->size < data->minimumSizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
216 data->done = true;-
217 data->size = data->minimumSize;-
218 finished = false;-
219 overdraft -= data->smartSizeHint() - data->minimumSize;-
220 // sumStretch -= data->stretch;-
221 n--;-
222 break;
never executed: break;
0
223 }-
224 }
never executed: end of block
0
225 }
never executed: end of block
0
226 } else { // extra space
never executed: end of block
0
227 int n = count;-
228 int space_left = space - sumSpacing;-
229 // first give to the fixed ones, and handle non-expansiveness-
230 for (i = start; i < start + count; i++) {
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
231 QLayoutStruct *data = &chain[i];-
232 if (!data->done
!data->doneDescription
TRUEnever evaluated
FALSEnever evaluated
0
233 && (data->maximumSize <= data->smartSizeHint()
data->maximumS...martSizeHint()Description
TRUEnever evaluated
FALSEnever evaluated
0
234 || (!allEmptyNonstretch && data->empty &&
!allEmptyNonstretchDescription
TRUEnever evaluated
FALSEnever evaluated
data->emptyDescription
TRUEnever evaluated
FALSEnever evaluated
0
235 !data->expansive && data->stretch == 0))) {
!data->expansiveDescription
TRUEnever evaluated
FALSEnever evaluated
data->stretch == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
236 data->size = data->smartSizeHint();-
237 data->done = true;-
238 space_left -= data->size;-
239 sumStretch -= data->stretch;-
240 if (data->expansive)
data->expansiveDescription
TRUEnever evaluated
FALSEnever evaluated
0
241 expandingCount--;
never executed: expandingCount--;
0
242 n--;-
243 }
never executed: end of block
0
244 }
never executed: end of block
0
245 extraspace = space_left;-
246-
247 /*-
248 Do a trial distribution and calculate how much it is off.-
249 If there are more deficit pixels than surplus pixels, give-
250 the minimum size items what they need, and repeat.-
251 Otherwise give to the maximum size items, and repeat.-
252-
253 Paul Olav Tvete has a wonderful mathematical proof of the-
254 correctness of this principle, but unfortunately this-
255 comment is too small to contain it.-
256 */-
257 int surplus, deficit;-
258 do {-
259 surplus = deficit = 0;-
260 Fixed64 fp_space = toFixed(space_left);-
261 Fixed64 fp_w = 0;-
262 for (i = start; i < start + count; i++) {
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
263 QLayoutStruct *data = &chain[i];-
264 if (data->done)
data->doneDescription
TRUEnever evaluated
FALSEnever evaluated
0
265 continue;
never executed: continue;
0
266 extraspace = 0;-
267 if (sumStretch > 0) {
sumStretch > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
268 fp_w += (fp_space * data->stretch) / sumStretch;-
269 } else if (expandingCount > 0) {
never executed: end of block
expandingCount > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
270 fp_w += (fp_space * (data->expansive ? 1 : 0)) / expandingCount;-
271 } else {
never executed: end of block
0
272 fp_w += fp_space * 1 / n;-
273 }
never executed: end of block
0
274 int w = fRound(fp_w);-
275 data->size = w;-
276 fp_w -= toFixed(w); // give the difference to the next-
277 if (w < data->smartSizeHint()) {
w < data->smartSizeHint()Description
TRUEnever evaluated
FALSEnever evaluated
0
278 deficit += data->smartSizeHint() - w;-
279 } else if (w > data->maximumSize) {
never executed: end of block
w > data->maximumSizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
280 surplus += w - data->maximumSize;-
281 }
never executed: end of block
0
282 }
never executed: end of block
0
283 if (deficit > 0 && surplus <= deficit) {
deficit > 0Description
TRUEnever evaluated
FALSEnever evaluated
surplus <= deficitDescription
TRUEnever evaluated
FALSEnever evaluated
0
284 // give to the ones that have too little-
285 for (i = start; i < start+count; i++) {
i < start+countDescription
TRUEnever evaluated
FALSEnever evaluated
0
286 QLayoutStruct *data = &chain[i];-
287 if (!data->done && data->size < data->smartSizeHint()) {
!data->doneDescription
TRUEnever evaluated
FALSEnever evaluated
data->size < d...martSizeHint()Description
TRUEnever evaluated
FALSEnever evaluated
0
288 data->size = data->smartSizeHint();-
289 data->done = true;-
290 space_left -= data->smartSizeHint();-
291 sumStretch -= data->stretch;-
292 if (data->expansive)
data->expansiveDescription
TRUEnever evaluated
FALSEnever evaluated
0
293 expandingCount--;
never executed: expandingCount--;
0
294 n--;-
295 }
never executed: end of block
0
296 }
never executed: end of block
0
297 }
never executed: end of block
0
298 if (surplus > 0 && surplus >= deficit) {
surplus > 0Description
TRUEnever evaluated
FALSEnever evaluated
surplus >= deficitDescription
TRUEnever evaluated
FALSEnever evaluated
0
299 // take from the ones that have too much-
300 for (i = start; i < start + count; i++) {
i < start + countDescription
TRUEnever evaluated
FALSEnever evaluated
0
301 QLayoutStruct *data = &chain[i];-
302 if (!data->done && data->size > data->maximumSize) {
!data->doneDescription
TRUEnever evaluated
FALSEnever evaluated
data->size > data->maximumSizeDescription
TRUEnever evaluated
FALSEnever evaluated
0
303 data->size = data->maximumSize;-
304 data->done = true;-
305 space_left -= data->maximumSize;-
306 sumStretch -= data->stretch;-
307 if (data->expansive)
data->expansiveDescription
TRUEnever evaluated
FALSEnever evaluated
0
308 expandingCount--;
never executed: expandingCount--;
0
309 n--;-
310 }
never executed: end of block
0
311 }
never executed: end of block
0
312 }
never executed: end of block
0
313 } while (n > 0 && surplus != deficit);
never executed: end of block
n > 0Description
TRUEnever evaluated
FALSEnever evaluated
surplus != deficitDescription
TRUEnever evaluated
FALSEnever evaluated
0
314 if (n == 0)
n == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
315 extraspace = space_left;
never executed: extraspace = space_left;
0
316 }
never executed: end of block
0
317-
318 /*-
319 As a last resort, we distribute the unwanted space equally-
320 among the spacers (counting the start and end of the chain). We-
321 could, but don't, attempt a sub-pixel allocation of the extra-
322 space.-
323 */-
324 int extra = extraspace / (spacerCount + 2);-
325 int p = pos + extra;-
326 for (i = start; i < start+count; i++) {
i < start+countDescription
TRUEnever evaluated
FALSEnever evaluated
0
327 QLayoutStruct *data = &chain[i];-
328 data->pos = p;-
329 p += data->size;-
330 if (!data->empty)
!data->emptyDescription
TRUEnever evaluated
FALSEnever evaluated
0
331 p += data->effectiveSpacer(spacer) + extra;
never executed: p += data->effectiveSpacer(spacer) + extra;
0
332 }
never executed: end of block
0
333-
334#ifdef QLAYOUT_EXTRA_DEBUG-
335 qDebug() << "qGeomCalc" << "start" << start << "count" << count << "pos" << pos-
336 << "space" << space << "spacer" << spacer;-
337 for (i = start; i < start + count; ++i) {-
338 qDebug() << i << ':' << chain[i].minimumSize << chain[i].smartSizeHint()-
339 << chain[i].maximumSize << "stretch" << chain[i].stretch-
340 << "empty" << chain[i].empty << "expansive" << chain[i].expansive-
341 << "spacing" << chain[i].spacing;-
342 qDebug() << "result pos" << chain[i].pos << "size" << chain[i].size;-
343 }-
344#endif-
345}
never executed: end of block
0
346-
347Q_WIDGETS_EXPORT QSize qSmartMinSize(const QSize &sizeHint, const QSize &minSizeHint,-
348 const QSize &minSize, const QSize &maxSize,-
349 const QSizePolicy &sizePolicy)-
350{-
351 QSize s(0, 0);-
352-
353 if (sizePolicy.horizontalPolicy() != QSizePolicy::Ignored) {
sizePolicy.hor...olicy::IgnoredDescription
TRUEnever evaluated
FALSEnever evaluated
0
354 if (sizePolicy.horizontalPolicy() & QSizePolicy::ShrinkFlag)
sizePolicy.hor...cy::ShrinkFlagDescription
TRUEnever evaluated
FALSEnever evaluated
0
355 s.setWidth(minSizeHint.width());
never executed: s.setWidth(minSizeHint.width());
0
356 else-
357 s.setWidth(qMax(sizeHint.width(), minSizeHint.width()));
never executed: s.setWidth(qMax(sizeHint.width(), minSizeHint.width()));
0
358 }-
359-
360 if (sizePolicy.verticalPolicy() != QSizePolicy::Ignored) {
sizePolicy.ver...olicy::IgnoredDescription
TRUEnever evaluated
FALSEnever evaluated
0
361 if (sizePolicy.verticalPolicy() & QSizePolicy::ShrinkFlag) {
sizePolicy.ver...cy::ShrinkFlagDescription
TRUEnever evaluated
FALSEnever evaluated
0
362 s.setHeight(minSizeHint.height());-
363 } else {
never executed: end of block
0
364 s.setHeight(qMax(sizeHint.height(), minSizeHint.height()));-
365 }
never executed: end of block
0
366 }-
367-
368 s = s.boundedTo(maxSize);-
369 if (minSize.width() > 0)
minSize.width() > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
370 s.setWidth(minSize.width());
never executed: s.setWidth(minSize.width());
0
371 if (minSize.height() > 0)
minSize.height() > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
372 s.setHeight(minSize.height());
never executed: s.setHeight(minSize.height());
0
373-
374 return s.expandedTo(QSize(0,0));
never executed: return s.expandedTo(QSize(0,0));
0
375}-
376-
377Q_WIDGETS_EXPORT QSize qSmartMinSize(const QWidgetItem *i)-
378{-
379 QWidget *w = const_cast<QWidgetItem *>(i)->widget();-
380 return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(),
never executed: return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(), w->minimumSize(), w->maximumSize(), w->sizePolicy());
0
381 w->minimumSize(), w->maximumSize(),
never executed: return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(), w->minimumSize(), w->maximumSize(), w->sizePolicy());
0
382 w->sizePolicy());
never executed: return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(), w->minimumSize(), w->maximumSize(), w->sizePolicy());
0
383}-
384-
385Q_WIDGETS_EXPORT QSize qSmartMinSize(const QWidget *w)-
386{-
387 return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(),
never executed: return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(), w->minimumSize(), w->maximumSize(), w->sizePolicy());
0
388 w->minimumSize(), w->maximumSize(),
never executed: return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(), w->minimumSize(), w->maximumSize(), w->sizePolicy());
0
389 w->sizePolicy());
never executed: return qSmartMinSize(w->sizeHint(), w->minimumSizeHint(), w->minimumSize(), w->maximumSize(), w->sizePolicy());
0
390}-
391-
392Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QSize &sizeHint,-
393 const QSize &minSize, const QSize &maxSize,-
394 const QSizePolicy &sizePolicy, Qt::Alignment align)-
395{-
396 if (align & Qt::AlignHorizontal_Mask && align & Qt::AlignVertical_Mask)
align & Qt::Al...orizontal_MaskDescription
TRUEnever evaluated
FALSEnever evaluated
align & Qt::AlignVertical_MaskDescription
TRUEnever evaluated
FALSEnever evaluated
0
397 return QSize(QLAYOUTSIZE_MAX, QLAYOUTSIZE_MAX);
never executed: return QSize(QLAYOUTSIZE_MAX, QLAYOUTSIZE_MAX);
0
398 QSize s = maxSize;-
399 QSize hint = sizeHint.expandedTo(minSize);-
400 if (s.width() == QWIDGETSIZE_MAX && !(align & Qt::AlignHorizontal_Mask))
s.width() == ((1<<24)-1)Description
TRUEnever evaluated
FALSEnever evaluated
!(align & Qt::...rizontal_Mask)Description
TRUEnever evaluated
FALSEnever evaluated
0
401 if (!(sizePolicy.horizontalPolicy() & QSizePolicy::GrowFlag))
!(sizePolicy.h...icy::GrowFlag)Description
TRUEnever evaluated
FALSEnever evaluated
0
402 s.setWidth(hint.width());
never executed: s.setWidth(hint.width());
0
403-
404 if (s.height() == QWIDGETSIZE_MAX && !(align & Qt::AlignVertical_Mask))
s.height() == ((1<<24)-1)Description
TRUEnever evaluated
FALSEnever evaluated
!(align & Qt::...Vertical_Mask)Description
TRUEnever evaluated
FALSEnever evaluated
0
405 if (!(sizePolicy.verticalPolicy() & QSizePolicy::GrowFlag))
!(sizePolicy.v...icy::GrowFlag)Description
TRUEnever evaluated
FALSEnever evaluated
0
406 s.setHeight(hint.height());
never executed: s.setHeight(hint.height());
0
407-
408 if (align & Qt::AlignHorizontal_Mask)
align & Qt::Al...orizontal_MaskDescription
TRUEnever evaluated
FALSEnever evaluated
0
409 s.setWidth(QLAYOUTSIZE_MAX);
never executed: s.setWidth(QLAYOUTSIZE_MAX);
0
410 if (align & Qt::AlignVertical_Mask)
align & Qt::AlignVertical_MaskDescription
TRUEnever evaluated
FALSEnever evaluated
0
411 s.setHeight(QLAYOUTSIZE_MAX);
never executed: s.setHeight(QLAYOUTSIZE_MAX);
0
412 return s;
never executed: return s;
0
413}-
414-
415Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QWidgetItem *i, Qt::Alignment align)-
416{-
417 QWidget *w = const_cast<QWidgetItem*>(i)->widget();-
418-
419 return qSmartMaxSize(w->sizeHint().expandedTo(w->minimumSizeHint()), w->minimumSize(), w->maximumSize(),
never executed: return qSmartMaxSize(w->sizeHint().expandedTo(w->minimumSizeHint()), w->minimumSize(), w->maximumSize(), w->sizePolicy(), align);
0
420 w->sizePolicy(), align);
never executed: return qSmartMaxSize(w->sizeHint().expandedTo(w->minimumSizeHint()), w->minimumSize(), w->maximumSize(), w->sizePolicy(), align);
0
421}-
422-
423Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QWidget *w, Qt::Alignment align)-
424{-
425 return qSmartMaxSize(w->sizeHint().expandedTo(w->minimumSizeHint()), w->minimumSize(), w->maximumSize(),
never executed: return qSmartMaxSize(w->sizeHint().expandedTo(w->minimumSizeHint()), w->minimumSize(), w->maximumSize(), w->sizePolicy(), align);
0
426 w->sizePolicy(), align);
never executed: return qSmartMaxSize(w->sizeHint().expandedTo(w->minimumSizeHint()), w->minimumSize(), w->maximumSize(), w->sizePolicy(), align);
0
427}-
428-
429Q_WIDGETS_EXPORT int qSmartSpacing(const QLayout *layout, QStyle::PixelMetric pm)-
430{-
431 QObject *parent = layout->parent();-
432 if (!parent) {
!parentDescription
TRUEnever evaluated
FALSEnever evaluated
0
433 return -1;
never executed: return -1;
0
434 } else if (parent->isWidgetType()) {
parent->isWidgetType()Description
TRUEnever evaluated
FALSEnever evaluated
0
435 QWidget *pw = static_cast<QWidget *>(parent);-
436 return pw->style()->pixelMetric(pm, 0, pw);
never executed: return pw->style()->pixelMetric(pm, 0, pw);
0
437 } else {-
438 return static_cast<QLayout *>(parent)->spacing();
never executed: return static_cast<QLayout *>(parent)->spacing();
0
439 }-
440}-
441-
442QT_END_NAMESPACE-
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