qabstractscrollarea.cpp

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6-
7-
8QAbstractScrollAreaPrivate::QAbstractScrollAreaPrivate()-
9 :hbar(0), vbar(0), vbarpolicy(Qt::ScrollBarAsNeeded), hbarpolicy(Qt::ScrollBarAsNeeded),-
10 shownOnce(false), inResize(false), sizeAdjustPolicy(QAbstractScrollArea::AdjustIgnored),-
11 viewport(0), cornerWidget(0), left(0), top(0), right(0), bottom(0),-
12 xoffset(0), yoffset(0), viewportFilter(0)-
13-
14-
15-
16{-
17}-
18-
19QAbstractScrollAreaPrivate::~QAbstractScrollAreaPrivate()-
20{-
21}-
22-
23QAbstractScrollAreaScrollBarContainer::QAbstractScrollAreaScrollBarContainer(Qt::Orientation orientation, QWidget *parent)-
24 :QWidget(parent), scrollBar(new QScrollBar(orientation, this)),-
25 layout(new QBoxLayout(orientation == Qt::Horizontal ? QBoxLayout::LeftToRight : QBoxLayout::TopToBottom)),-
26 orientation(orientation)-
27{-
28 setLayout(layout);-
29 layout->setMargin(0);-
30 layout->setSpacing(0);-
31 layout->addWidget(scrollBar);-
32 layout->setSizeConstraint(QLayout::SetMaximumSize);-
33}-
34-
35-
36-
37-
38void QAbstractScrollAreaScrollBarContainer::addWidget(QWidget *widget, LogicalPosition position)-
39{-
40 QSizePolicy policy = widget->sizePolicy();-
41 if (orientation == Qt::Vertical)-
42 policy.setHorizontalPolicy(QSizePolicy::Ignored);-
43 else-
44 policy.setVerticalPolicy(QSizePolicy::Ignored);-
45 widget->setSizePolicy(policy);-
46 widget->setParent(this);-
47-
48 const int insertIndex = (position & LogicalLeft) ? 0 : scrollBarLayoutIndex() + 1;-
49 layout->insertWidget(insertIndex, widget);-
50}-
51-
52-
53-
54-
55-
56QWidgetList QAbstractScrollAreaScrollBarContainer::widgets(LogicalPosition position)-
57{-
58 QWidgetList list;-
59 const int scrollBarIndex = scrollBarLayoutIndex();-
60 if (position == LogicalLeft) {-
61 list.reserve(scrollBarIndex);-
62 for (int i = 0; i < scrollBarIndex; ++i)-
63 list.append(layout->itemAt(i)->widget());-
64 } else if (position == LogicalRight) {-
65 const int layoutItemCount = layout->count();-
66 list.reserve(layoutItemCount - (scrollBarIndex + 1));-
67 for (int i = scrollBarIndex + 1; i < layoutItemCount; ++i)-
68 list.append(layout->itemAt(i)->widget());-
69 }-
70 return list;-
71}-
72-
73-
74-
75-
76-
77-
78-
79int QAbstractScrollAreaScrollBarContainer::scrollBarLayoutIndex() const-
80{-
81 const int layoutItemCount = layout->count();-
82 for (int i = 0; i < layoutItemCount; ++i) {-
83 if (qobject_cast<QScrollBar *>(layout->itemAt(i)->widget()))-
84 return i;-
85 }-
86 return -1;-
87}-
88-
89-
90-
91void QAbstractScrollAreaPrivate::replaceScrollBar(QScrollBar *scrollBar,-
92 Qt::Orientation orientation)-
93{-
94 QAbstractScrollArea * const q = q_func();-
95-
96 QAbstractScrollAreaScrollBarContainer *container = scrollBarContainers[orientation];-
97 bool horizontal = (orientation == Qt::Horizontal);-
98 QScrollBar *oldBar = horizontal
horizontalDescription
TRUEnever evaluated
FALSEnever evaluated
 ? hbar : vbar;		0
99 if (horizontal
horizontalDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
100 hbar = scrollBar;
never executed: hbar = scrollBar;
0
101 else-
102 vbar = scrollBar;
never executed: vbar = scrollBar;
0
103 scrollBar->setParent(container);-
104 container->scrollBar = scrollBar;-
105 container->layout->removeWidget(oldBar);-
106 container->layout->insertWidget(0, scrollBar);-
107 scrollBar->setVisible(oldBar->isVisibleTo(container));-
108 scrollBar->setInvertedAppearance(oldBar->invertedAppearance());-
109 scrollBar->setInvertedControls(oldBar->invertedControls());-
110 scrollBar->setRange(oldBar->minimum(), oldBar->maximum());-
111 scrollBar->setOrientation(oldBar->orientation());-
112 scrollBar->setPageStep(oldBar->pageStep());-
113 scrollBar->setSingleStep(oldBar->singleStep());-
114 scrollBar->d_func()->viewMayChangeSingleStep = oldBar->d_func()->viewMayChangeSingleStep;-
115 scrollBar->setSliderDown(oldBar->isSliderDown());-
116 scrollBar->setSliderPosition(oldBar->sliderPosition());-
117 scrollBar->setTracking(oldBar->hasTracking());-
118 scrollBar->setValue(oldBar->value());-
119 scrollBar->installEventFilter(q);-
120 oldBar->removeEventFilter(q);-
121 delete oldBar;-
122-
123 QObject::connect(scrollBar, qFlagLocation("2""valueChanged(int)" "\0" __FILE__ ":" "274""281"),-
124 q, horizontal ? qFlagLocation("1""_q_hslide(int)" "\0" __FILE__ ":" "275""282") : qFlagLocation("1""_q_vslide(int)" "\0" __FILE__ ":" "275""282"));-
125 QObject::connect(scrollBar, qFlagLocation("2""rangeChanged(int,int)" "\0" __FILE__ ":" "276""283"),-
126 q, qFlagLocation("1""_q_showOrHideScrollBars()" "\0" __FILE__ ":" "277""284"), Qt::QueuedConnection);-
127}
never executed: end of block
0
128-
129void QAbstractScrollAreaPrivate::init()-
130{-
131 QAbstractScrollArea * const q = q_func();-
132 viewport = new QWidget(q);-
133 viewport->setObjectName(QLatin1String("qt_scrollarea_viewport"));-
134 viewport->setBackgroundRole(QPalette::Base);-
135 viewport->setAutoFillBackground(true);-
136 scrollBarContainers[Qt::Horizontal] = new QAbstractScrollAreaScrollBarContainer(Qt::Horizontal, q);-
137 scrollBarContainers[Qt::Horizontal]->setObjectName(QLatin1String("qt_scrollarea_hcontainer"));-
138 hbar = scrollBarContainers[Qt::Horizontal]->scrollBar;-
139 hbar->setRange(0,0);-
140 scrollBarContainers[Qt::Horizontal]->setVisible(false);-
141 hbar->installEventFilter(q);-
142 QObject::connect(hbar, qFlagLocation("2""valueChanged(int)" "\0" __FILE__ ":" "293""300"), q, qFlagLocation("1""_q_hslide(int)" "\0" __FILE__ ":" "293""300"));-
143 QObject::connect(hbar, qFlagLocation("2""rangeChanged(int,int)" "\0" __FILE__ ":" "294""301"), q, qFlagLocation("1""_q_showOrHideScrollBars()" "\0" __FILE__ ":" "294""301"), Qt::QueuedConnection);-
144 scrollBarContainers[Qt::Vertical] = new QAbstractScrollAreaScrollBarContainer(Qt::Vertical, q);-
145 scrollBarContainers[Qt::Vertical]->setObjectName(QLatin1String("qt_scrollarea_vcontainer"));-
146 vbar = scrollBarContainers[Qt::Vertical]->scrollBar;-
147 vbar->setRange(0,0);-
148 scrollBarContainers[Qt::Vertical]->setVisible(false);-
149 vbar->installEventFilter(q);-
150 QObject::connect(vbar, qFlagLocation("2""valueChanged(int)" "\0" __FILE__ ":" "301""308"), q, qFlagLocation("1""_q_vslide(int)" "\0" __FILE__ ":" "301""308"));-
151 QObject::connect(vbar, qFlagLocation("2""rangeChanged(int,int)" "\0" __FILE__ ":" "302""309"), q, qFlagLocation("1""_q_showOrHideScrollBars()" "\0" __FILE__ ":" "302""309"), Qt::QueuedConnection);-
152 viewportFilter.reset(new QAbstractScrollAreaFilter(this));-
153 viewport->installEventFilter(viewportFilter.data());-
154 viewport->setFocusProxy(q);-
155 q->setFocusPolicy(Qt::StrongFocus);-
156 q->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);-
157 q->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);-
158 layoutChildren();-
159-
160-
161 viewport->grabGesture(Qt::PanGesture);-
162-
163-
164}-
165void QAbstractScrollAreaPrivate::layoutChildren()-
166{-
167 QAbstractScrollArea * const q = q_func();-
168 bool htransient = hbar->style()->styleHint(QStyle::SH_ScrollBar_Transient, 0, hbar);-
169 bool needh = (
(hbarpolicy !=...lBarAlwaysOff)Description
TRUEnever evaluated
FALSEnever evaluated
hbarpolicy != Qt::ScrollBarAlwaysOff)
(hbarpolicy !=...lBarAlwaysOff)Description
TRUEnever evaluated
FALSEnever evaluated
 && ((hbarpolicy == Qt::ScrollBarAlwaysOn
hbarpolicy == ...ollBarAlwaysOnDescription
TRUEnever evaluated
FALSEnever evaluated
 && !htransient
!htransientDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
170 || ((hbarpolicy == Qt::ScrollBarAsNeeded
hbarpolicy == ...ollBarAsNeededDescription
TRUEnever evaluated
FALSEnever evaluated
 || htransient
htransientDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
171 && hbar->minimum() < hbar->maximum()
hbar->minimum(...bar->maximum()Description
TRUEnever evaluated
FALSEnever evaluated
 && !hbar->sizeHint().isEmpty()
!hbar->sizeHint().isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
));		0
172-
173 bool vtransient = vbar->style()->styleHint(QStyle::SH_ScrollBar_Transient, 0, vbar);-
174 bool needv = (
(vbarpolicy !=...lBarAlwaysOff)Description
TRUEnever evaluated
FALSEnever evaluated
vbarpolicy != Qt::ScrollBarAlwaysOff)
(vbarpolicy !=...lBarAlwaysOff)Description
TRUEnever evaluated
FALSEnever evaluated
 && ((vbarpolicy == Qt::ScrollBarAlwaysOn
vbarpolicy == ...ollBarAlwaysOnDescription
TRUEnever evaluated
FALSEnever evaluated
 && !vtransient
!vtransientDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
175 || ((vbarpolicy == Qt::ScrollBarAsNeeded
vbarpolicy == ...ollBarAsNeededDescription
TRUEnever evaluated
FALSEnever evaluated
 || vtransient
vtransientDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
176 && vbar->minimum() < vbar->maximum()
vbar->minimum(...bar->maximum()Description
TRUEnever evaluated
FALSEnever evaluated
 && !vbar->sizeHint().isEmpty()
!vbar->sizeHint().isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
));		0
177-
178 QStyleOption opt(0);-
179 opt.init(q);-
180-
181 const int hscrollOverlap = hbar->style()->pixelMetric(QStyle::PM_ScrollView_ScrollBarOverlap, &opt, hbar);-
182 const int vscrollOverlap = vbar->style()->pixelMetric(QStyle::PM_ScrollView_ScrollBarOverlap, &opt, vbar);-
183 const int hsbExt = hbar->sizeHint().height();-
184 const int vsbExt = vbar->sizeHint().width();-
185 const QPoint extPoint(vsbExt, hsbExt);-
186 const QSize extSize(vsbExt, hsbExt);-
187-
188 const QRect widgetRect = q->rect();-
189-
190 const bool hasCornerWidget = (cornerWidget != 0);-
191 QPoint cornerOffset((needv && vscrollOverlap == 0) ? vsbExt : 0, (needh && hscrollOverlap == 0) ? hsbExt : 0);-
192 QRect controlsRect;-
193 QRect viewportRect;-
194-
195-
196-
197 if ((
(frameStyle !=...rame::NoFrame)Description
TRUEnever evaluated
FALSEnever evaluated
frameStyle != QFrame::NoFrame)
(frameStyle !=...rame::NoFrame)Description
TRUEnever evaluated
FALSEnever evaluated
 &&		0
198 q->style()->styleHint(QStyle::SH_ScrollView_FrameOnlyAroundContents, &opt, q)
q->style()->st...ents, &opt, q)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
199 controlsRect = widgetRect;-
200 const int spacing = q->style()->pixelMetric(QStyle::PM_ScrollView_ScrollBarSpacing, &opt, q);-
201 const QPoint cornerExtra(needv ? spacing + vscrollOverlap : 0, needh ? spacing + hscrollOverlap : 0);-
202 QRect frameRect = widgetRect;-
203 frameRect.adjust(0, 0, -cornerOffset.x() - cornerExtra.x(), -cornerOffset.y() - cornerExtra.y());-
204 q->setFrameRect(QStyle::visualRect(opt.direction, opt.rect, frameRect));-
205-
206-
207-
208 viewportRect = QStyle::visualRect(opt.direction, opt.rect, q->contentsRect());-
209 }
never executed: end of block
 else {		0
210 q->setFrameRect(QStyle::visualRect(opt.direction, opt.rect, widgetRect));-
211 controlsRect = q->contentsRect();-
212 viewportRect = QRect(controlsRect.topLeft(), controlsRect.bottomRight() - cornerOffset);-
213 }
never executed: end of block
0
214-
215 cornerOffset = QPoint(needv ? vsbExt : 0, needh ? hsbExt : 0);-
216-
217-
218-
219 if (hasCornerWidget
hasCornerWidgetDescription
TRUEnever evaluated
FALSEnever evaluated
 && ((needv
needvDescription
TRUEnever evaluated
FALSEnever evaluated
 && vscrollOverlap == 0
vscrollOverlap == 0Description
TRUEnever evaluated
FALSEnever evaluated
) || (needh
needhDescription
TRUEnever evaluated
FALSEnever evaluated
 && hscrollOverlap == 0
hscrollOverlap == 0Description
TRUEnever evaluated
FALSEnever evaluated
)))		0
220 cornerOffset = extPoint;
never executed: cornerOffset = extPoint;
0
221 const QPoint cornerPoint(controlsRect.bottomRight() + QPoint(1, 1) - cornerOffset);-
222-
223-
224-
225 if (needv
needvDescription
TRUEnever evaluated
FALSEnever evaluated
 && needh
needhDescription
TRUEnever evaluated
FALSEnever evaluated
 && !hasCornerWidget
!hasCornerWidgetDescription
TRUEnever evaluated
FALSEnever evaluated
 && hscrollOverlap == 0
hscrollOverlap == 0Description
TRUEnever evaluated
FALSEnever evaluated
 && vscrollOverlap == 0
vscrollOverlap == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
226 cornerPaintingRect = QStyle::visualRect(opt.direction, opt.rect, QRect(cornerPoint, extSize));
never executed: cornerPaintingRect = QStyle::visualRect(opt.direction, opt.rect, QRect(cornerPoint, extSize));
0
227 else-
228 cornerPaintingRect = QRect();
never executed: cornerPaintingRect = QRect();
0
229 int vHeaderRight = 0;-
230 int hHeaderBottom = 0;-
231 if ((vscrollOverlap > 0
vscrollOverlap > 0Description
TRUEnever evaluated
FALSEnever evaluated
 && needv
needvDescription
TRUEnever evaluated
FALSEnever evaluated
) || (hscrollOverlap > 0
hscrollOverlap > 0Description
TRUEnever evaluated
FALSEnever evaluated
 && needh
needhDescription
TRUEnever evaluated
FALSEnever evaluated
)) {		0
232 const QList<QHeaderView *> headers = q->findChildren<QHeaderView*>();-
233 if (headers.count() <= 2
headers.count() <= 2Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
234 for (QForeachContainer<typename QtPrivate::remove_reference<decltype(headers)>::type> _container_((headers)); _container_.control && _container_.i != _container_.e; ++_container_.i, _container_.control ^= 1)for (const QHeaderView *header = *_container_.i; _container_.control; _container_.control = 0: headers) {-
235 const QRect geo = header->geometry();-
236 if (header->orientation() == Qt::Vertical
header->orient...= Qt::VerticalDescription
TRUEnever evaluated
FALSEnever evaluated
 && header->isVisible()
header->isVisible()Description
TRUEnever evaluated
FALSEnever evaluated
 && QStyle::visualRect(opt.direction, opt.rect, geo).left() <= opt.rect.width() / 2
QStyle::visual...ct.width() / 2Description
TRUEnever evaluated
FALSEnever evaluated
)		0
237 vHeaderRight = QStyle::visualRect(opt.direction, opt.rect, geo).right();
never executed: vHeaderRight = QStyle::visualRect(opt.direction, opt.rect, geo).right();
0
238 else if (header->orientation() == Qt::Horizontal
header->orient...Qt::HorizontalDescription
TRUEnever evaluated
FALSEnever evaluated
 && header->isVisible()
header->isVisible()Description
TRUEnever evaluated
FALSEnever evaluated
 && geo.top() <= q->frameWidth()
geo.top() <= q->frameWidth()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
239 hHeaderBottom = geo.bottom();
never executed: hHeaderBottom = geo.bottom();
0
240 }
never executed: end of block
0
241 }
never executed: end of block
0
242 }
never executed: end of block
0
243-
244 if (needh
needhDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
245 QRect horizontalScrollBarRect(QPoint(controlsRect.left() + vHeaderRight, cornerPoint.y()), QPoint(cornerPoint.x() - 1, controlsRect.bottom()));-
246-
247-
248-
249-
250 if (!hasCornerWidget
!hasCornerWidgetDescription
TRUEnever evaluated
FALSEnever evaluated
 && htransient
htransientDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
251-
252-
253-
254 horizontalScrollBarRect.adjust(0, 0, cornerOffset.x(), 0);
never executed: horizontalScrollBarRect.adjust(0, 0, cornerOffset.x(), 0);
0
255 scrollBarContainers[Qt::Horizontal]->setGeometry(QStyle::visualRect(opt.direction, opt.rect, horizontalScrollBarRect));-
256 scrollBarContainers[Qt::Horizontal]->raise();-
257 }
never executed: end of block
0
258-
259 if (needv
needvDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
260 QRect verticalScrollBarRect (QPoint(cornerPoint.x(), controlsRect.top() + hHeaderBottom), QPoint(controlsRect.right(), cornerPoint.y() - 1));-
261 if (!hasCornerWidget
!hasCornerWidgetDescription
TRUEnever evaluated
FALSEnever evaluated
 && vtransient
vtransientDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
262-
263-
264-
265 verticalScrollBarRect.adjust(0, 0, 0, cornerOffset.y());
never executed: verticalScrollBarRect.adjust(0, 0, 0, cornerOffset.y());
0
266 scrollBarContainers[Qt::Vertical]->setGeometry(QStyle::visualRect(opt.direction, opt.rect, verticalScrollBarRect));-
267 scrollBarContainers[Qt::Vertical]->raise();-
268 }
never executed: end of block
0
269-
270 if (cornerWidget
cornerWidgetDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
271 const QRect cornerWidgetRect(cornerPoint, controlsRect.bottomRight());-
272 cornerWidget->setGeometry(QStyle::visualRect(opt.direction, opt.rect, cornerWidgetRect));-
273 }
never executed: end of block
0
274-
275 scrollBarContainers[Qt::Horizontal]->setVisible(needh);-
276 scrollBarContainers[Qt::Vertical]->setVisible(needv);-
277-
278 if (q->isRightToLeft()
q->isRightToLeft()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
279 viewportRect.adjust(right, top, -left, -bottom);
never executed: viewportRect.adjust(right, top, -left, -bottom);
0
280 else-
281 viewportRect.adjust(left, top, -right, -bottom);
never executed: viewportRect.adjust(left, top, -right, -bottom);
0
282-
283 viewport->setGeometry(QStyle::visualRect(opt.direction, opt.rect, viewportRect));-
284}
never executed: end of block
0
285QAbstractScrollArea::QAbstractScrollArea(QAbstractScrollAreaPrivate &dd, QWidget *parent)-
286 :QFrame(dd, parent)-
287{-
288 QAbstractScrollAreaPrivate * const d = d_func();-
289 if (true) {-
290 d->init();-
291 } else {
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
292 d->viewportFilter.reset();
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
293 qt_noop();
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
294 }
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
295}-
296-
297-
298-
299-
300-
301-
302QAbstractScrollArea::QAbstractScrollArea(QWidget *parent)-
303 :QFrame(*new QAbstractScrollAreaPrivate, parent)-
304{-
305 QAbstractScrollAreaPrivate * const d = d_func();-
306 if (true) {-
307 d->init();-
308 } else {
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
309 d->viewportFilter.reset();
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
310 qt_noop();
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
311 }
dead code: { d->viewportFilter.reset(); qt_noop(); }
-
312}-
313-
314-
315-
316-
317-
318QAbstractScrollArea::~QAbstractScrollArea()-
319{-
320 QAbstractScrollAreaPrivate * const d = d_func();-
321-
322 d->viewportFilter.reset();-
323}-
324void QAbstractScrollArea::setViewport(QWidget *widget)-
325{-
326 QAbstractScrollAreaPrivate * const d = d_func();-
327 if (widget != d->viewport) {-
328 QWidget *oldViewport = d->viewport;-
329 if (!widget)-
330 widget = new QWidget;-
331 d->viewport = widget;-
332 d->viewport->setParent(this);-
333 d->viewport->setFocusProxy(this);-
334 d->viewport->installEventFilter(d->viewportFilter.data());-
335-
336-
337 d->viewport->grabGesture(Qt::PanGesture);-
338-
339-
340 d->layoutChildren();-
341-
342 QWidgetPrivate::get(d->viewport)->initializeViewportFramebuffer();-
343-
344 if (isVisible())-
345 d->viewport->show();-
346 setupViewport(widget);-
347 delete oldViewport;-
348 }-
349}-
350QWidget *QAbstractScrollArea::viewport() const-
351{-
352 const QAbstractScrollAreaPrivate * const d = d_func();-
353 return d->viewport;-
354}-
355-
356-
357-
358-
359-
360-
361-
362QSize QAbstractScrollArea::maximumViewportSize() const-
363{-
364 const QAbstractScrollAreaPrivate * const d = d_func();-
365 int hsbExt = d->hbar->sizeHint().height();-
366 int vsbExt = d->vbar->sizeHint().width();-
367-
368 int f = 2 * d->frameWidth;-
369 QSize max = size() - QSize(f + d->left + d->right, f + d->top + d->bottom);-
370 if (d->vbarpolicy == Qt::ScrollBarAlwaysOn)-
371 max.rwidth() -= vsbExt;-
372 if (d->hbarpolicy == Qt::ScrollBarAlwaysOn)-
373 max.rheight() -= hsbExt;-
374 return max;-
375}-
376Qt::ScrollBarPolicy QAbstractScrollArea::verticalScrollBarPolicy() const-
377{-
378 const QAbstractScrollAreaPrivate * const d = d_func();-
379 return d->vbarpolicy;-
380}-
381-
382void QAbstractScrollArea::setVerticalScrollBarPolicy(Qt::ScrollBarPolicy policy)-
383{-
384 QAbstractScrollAreaPrivate * const d = d_func();-
385 const Qt::ScrollBarPolicy oldPolicy = d->vbarpolicy;-
386 d->vbarpolicy = policy;-
387 if (isVisible())-
388 d->layoutChildren();-
389 if (oldPolicy != d->vbarpolicy)-
390 d->scrollBarPolicyChanged(Qt::Vertical, d->vbarpolicy);-
391}-
392-
393-
394-
395-
396-
397-
398-
399QScrollBar *QAbstractScrollArea::verticalScrollBar() const-
400{-
401 const QAbstractScrollAreaPrivate * const d = d_func();-
402 return d->vbar;-
403}-
404void QAbstractScrollArea::setVerticalScrollBar(QScrollBar *scrollBar)-
405{-
406 QAbstractScrollAreaPrivate * const d = d_func();-
407 if (!(__builtin_expect(!!(!
__builtin_expe...llBar), false)Description
TRUEnever evaluated
FALSEnever evaluated
scrollBar)), false)
__builtin_expe...llBar), false)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
408 QMessageLogger(__FILE__, 709716, __PRETTY_FUNCTION__).warning("QAbstractScrollArea::setVerticalScrollBar: Cannot set a null scroll bar");-
409 return;
never executed: return;
0
410 }-
411-
412 d->replaceScrollBar(scrollBar, Qt::Vertical);-
413}
never executed: end of block
0
414Qt::ScrollBarPolicy QAbstractScrollArea::horizontalScrollBarPolicy() const-
415{-
416 const QAbstractScrollAreaPrivate * const d = d_func();-
417 return d->hbarpolicy;-
418}-
419-
420void QAbstractScrollArea::setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy policy)-
421{-
422 QAbstractScrollAreaPrivate * const d = d_func();-
423 const Qt::ScrollBarPolicy oldPolicy = d->hbarpolicy;-
424 d->hbarpolicy = policy;-
425 if (isVisible())-
426 d->layoutChildren();-
427 if (oldPolicy != d->hbarpolicy)-
428 d->scrollBarPolicyChanged(Qt::Horizontal, d->hbarpolicy);-
429}-
430-
431-
432-
433-
434-
435-
436QScrollBar *QAbstractScrollArea::horizontalScrollBar() const-
437{-
438 const QAbstractScrollAreaPrivate * const d = d_func();-
439 return d->hbar;-
440}-
441void QAbstractScrollArea::setHorizontalScrollBar(QScrollBar *scrollBar)-
442{-
443 QAbstractScrollAreaPrivate * const d = d_func();-
444 if (!(__builtin_expect(!!(!
__builtin_expe...llBar), false)Description
TRUEnever evaluated
FALSEnever evaluated
scrollBar)), false)
__builtin_expe...llBar), false)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
445 QMessageLogger(__FILE__, 770777, __PRETTY_FUNCTION__).warning("QAbstractScrollArea::setHorizontalScrollBar: Cannot set a null scroll bar");-
446 return;
never executed: return;
0
447 }-
448-
449 d->replaceScrollBar(scrollBar, Qt::Horizontal);-
450}
never executed: end of block
0
451QWidget *QAbstractScrollArea::cornerWidget() const-
452{-
453 const QAbstractScrollAreaPrivate * const d = d_func();-
454 return d->cornerWidget;-
455}-
456void QAbstractScrollArea::setCornerWidget(QWidget *widget)-
457{-
458 QAbstractScrollAreaPrivate * const d = d_func();-
459 QWidget* oldWidget = d->cornerWidget;-
460 if (oldWidget != widget) {-
461 if (oldWidget)-
462 oldWidget->hide();-
463 d->cornerWidget = widget;-
464-
465 if (widget && widget->parentWidget() != this)-
466 widget->setParent(this);-
467-
468 d->layoutChildren();-
469 if (widget)-
470 widget->show();-
471 } else {-
472 d->cornerWidget = widget;-
473 d->layoutChildren();-
474 }-
475}-
476void QAbstractScrollArea::addScrollBarWidget(QWidget *widget, Qt::Alignment alignment)-
477{-
478 QAbstractScrollAreaPrivate * const d = d_func();-
479-
480 if (widget == 0)-
481 return;-
482-
483 const Qt::Orientation scrollBarOrientation-
484 = ((alignment & Qt::AlignLeft) || (alignment & Qt::AlignRight)) ? Qt::Horizontal : Qt::Vertical;-
485 const QAbstractScrollAreaScrollBarContainer::LogicalPosition position-
486 = ((alignment & Qt::AlignRight) || (alignment & Qt::AlignBottom))-
487 ? QAbstractScrollAreaScrollBarContainer::LogicalRight : QAbstractScrollAreaScrollBarContainer::LogicalLeft;-
488 d->scrollBarContainers[scrollBarOrientation]->addWidget(widget, position);-
489 d->layoutChildren();-
490 if (isHidden() == false)-
491 widget->show();-
492}-
493QWidgetList QAbstractScrollArea::scrollBarWidgets(Qt::Alignment alignment)-
494{-
495 QAbstractScrollAreaPrivate * const d = d_func();-
496-
497 QWidgetList list;-
498-
499 if (alignment & Qt::AlignLeft)-
500 list += d->scrollBarContainers[Qt::Horizontal]->widgets(QAbstractScrollAreaScrollBarContainer::LogicalLeft);-
501 if (alignment & Qt::AlignRight)-
502 list += d->scrollBarContainers[Qt::Horizontal]->widgets(QAbstractScrollAreaScrollBarContainer::LogicalRight);-
503 if (alignment & Qt::AlignTop)-
504 list += d->scrollBarContainers[Qt::Vertical]->widgets(QAbstractScrollAreaScrollBarContainer::LogicalLeft);-
505 if (alignment & Qt::AlignBottom)-
506 list += d->scrollBarContainers[Qt::Vertical]->widgets(QAbstractScrollAreaScrollBarContainer::LogicalRight);-
507-
508 return list;-
509}-
510void QAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom)-
511{-
512 QAbstractScrollAreaPrivate * const d = d_func();-
513 d->left = left;-
514 d->top = top;-
515 d->right = right;-
516 d->bottom = bottom;-
517 d->layoutChildren();-
518}-
519void QAbstractScrollArea::setViewportMargins(const QMargins &margins)-
520{-
521 setViewportMargins(margins.left(), margins.top(),-
522 margins.right(), margins.bottom());-
523}-
524QMargins QAbstractScrollArea::viewportMargins() const-
525{-
526 const QAbstractScrollAreaPrivate * const d = d_func();-
527 return QMargins(d->left, d->top, d->right, d->bottom);-
528}-
529-
530-
531bool QAbstractScrollArea::eventFilter(QObject *o, QEvent *e)-
532{-
533 QAbstractScrollAreaPrivate * const d = d_func();-
534 if ((o == d->hbar || o == d->vbar) && (e->type() == QEvent::HoverEnter || e->type() == QEvent::HoverLeave)) {-
535 if (d->hbarpolicy == Qt::ScrollBarAsNeeded && d->vbarpolicy == Qt::ScrollBarAsNeeded) {-
536 QScrollBar *sbar = static_cast<QScrollBar*>(o);-
537 QScrollBar *sibling = sbar == d->hbar ? d->vbar : d->hbar;-
538 if (sbar->style()->styleHint(QStyle::SH_ScrollBar_Transient, 0, sbar) &&-
539 sibling->style()->styleHint(QStyle::SH_ScrollBar_Transient, 0, sibling))-
540 d->setScrollBarTransient(sibling, e->type() == QEvent::HoverLeave);-
541 }-
542 }-
543 return QFrame::eventFilter(o, e);-
544}-
545bool QAbstractScrollArea::event(QEvent *e)-
546{-
547 QAbstractScrollAreaPrivate * const d = d_func();-
548 switch (e->type()) {-
549 case QEvent::AcceptDropsChange:-
550-
551-
552-
553-
554-
555 if (d->viewport)-
556 d->viewport->setAcceptDrops(acceptDrops());-
557 break;-
558 case QEvent::MouseTrackingChange:-
559 d->viewport->setMouseTracking(hasMouseTracking());-
560 break;-
561 case QEvent::Resize:-
562 if (!d->inResize) {-
563 d->inResize = true;-
564 d->layoutChildren();-
565 d->inResize = false;-
566 }-
567 break;-
568 case QEvent::Show:-
569 if (!d->shownOnce && d->sizeAdjustPolicy == QAbstractScrollArea::AdjustToContentsOnFirstShow) {-
570 d->sizeHint = QSize();-
571 updateGeometry();-
572 }-
573 d->shownOnce = true;-
574 return QFrame::event(e);-
575 case QEvent::Paint: {-
576 QStyleOption option;-
577 option.initFrom(this);-
578 if (d->cornerPaintingRect.isValid()) {-
579 option.rect = d->cornerPaintingRect;-
580 QPainter p(this);-
581 style()->drawPrimitive(QStyle::PE_PanelScrollAreaCorner, &option, &p, this);-
582 }-
583-
584-
585-
586-
587-
588-
589-
590 }-
591 QFrame::paintEvent((QPaintEvent*)e);-
592 break;-
593-
594 case QEvent::ContextMenu:-
595 if (static_cast<QContextMenuEvent *>(e)->reason() == QContextMenuEvent::Keyboard)-
596 return QFrame::event(e);-
597 e->ignore();-
598 break;-
599-
600 case QEvent::MouseButtonPress:-
601 case QEvent::MouseButtonRelease:-
602 case QEvent::MouseButtonDblClick:-
603 case QEvent::MouseMove:-
604 case QEvent::Wheel:-
605-
606 case QEvent::Drop:-
607 case QEvent::DragEnter:-
608 case QEvent::DragMove:-
609 case QEvent::DragLeave:-
610-
611-
612 case QEvent::TouchBegin:-
613 case QEvent::TouchUpdate:-
614 case QEvent::TouchEnd:-
615 return false;-
616-
617 case QEvent::Gesture:-
618 {-
619 QGestureEvent *ge = static_cast<QGestureEvent *>(e);-
620 QPanGesture *g = static_cast<QPanGesture *>(ge->gesture(Qt::PanGesture));-
621 if (g) {-
622 QScrollBar *hBar = horizontalScrollBar();-
623 QScrollBar *vBar = verticalScrollBar();-
624 QPointF delta = g->delta();-
625 if (!delta.isNull()) {-
626 if (QApplication::isRightToLeft())-
627 delta.rx() *= -1;-
628 int newX = hBar->value() - delta.x();-
629 int newY = vBar->value() - delta.y();-
630 hBar->setValue(newX);-
631 vBar->setValue(newY);-
632 }-
633 return true;-
634 }-
635 return false;-
636 }-
637-
638 case QEvent::ScrollPrepare:-
639 {-
640 QScrollPrepareEvent *se = static_cast<QScrollPrepareEvent *>(e);-
641 if (d->canStartScrollingAt(se->startPos().toPoint())) {-
642 QScrollBar *hBar = horizontalScrollBar();-
643 QScrollBar *vBar = verticalScrollBar();-
644-
645 se->setViewportSize(QSizeF(viewport()->size()));-
646 se->setContentPosRange(QRectF(0, 0, hBar->maximum(), vBar->maximum()));-
647 se->setContentPos(QPointF(hBar->value(), vBar->value()));-
648 se->accept();-
649 return true;-
650 }-
651 return false;-
652 }-
653 case QEvent::Scroll:-
654 {-
655 QScrollEvent *se = static_cast<QScrollEvent *>(e);-
656-
657 QScrollBar *hBar = horizontalScrollBar();-
658 QScrollBar *vBar = verticalScrollBar();-
659 hBar->setValue(se->contentPos().x());-
660 vBar->setValue(se->contentPos().y());-
661 {-
662 QPoint delta = d->overshoot - se->overshootDistance().toPoint();-
663 if (!delta.isNull())-
664 viewport()->move(viewport()->pos() + delta);-
665 }-
666 d->overshoot = se->overshootDistance().toPoint();-
667-
668 return true;-
669 }-
670 case QEvent::StyleChange:-
671 case QEvent::LayoutDirectionChange:-
672 case QEvent::ApplicationLayoutDirectionChange:-
673 case QEvent::LayoutRequest:-
674 d->layoutChildren();-
675-
676 default:-
677 return QFrame::event(e);-
678 }-
679 return true;-
680}-
681bool QAbstractScrollArea::viewportEvent(QEvent *e)-
682{-
683 switch (e->type()) {-
684 case QEvent::Resize:-
685 case QEvent::Paint:-
686 case QEvent::MouseButtonPress:-
687 case QEvent::MouseButtonRelease:-
688 case QEvent::MouseButtonDblClick:-
689 case QEvent::TouchBegin:-
690 case QEvent::TouchUpdate:-
691 case QEvent::TouchEnd:-
692 case QEvent::MouseMove:-
693 case QEvent::ContextMenu:-
694-
695 case QEvent::Wheel:-
696-
697-
698 case QEvent::Drop:-
699 case QEvent::DragEnter:-
700 case QEvent::DragMove:-
701 case QEvent::DragLeave:-
702-
703-
704-
705-
706 if (e->type() == QEvent::Resize)-
707 QWidgetPrivate::get(viewport())->resizeViewportFramebuffer();-
708-
709 return QFrame::event(e);-
710 case QEvent::LayoutRequest:-
711-
712 case QEvent::Gesture:-
713 case QEvent::GestureOverride:-
714 return event(e);-
715-
716 case QEvent::ScrollPrepare:-
717 case QEvent::Scroll:-
718 return event(e);-
719 default:-
720 break;-
721 }-
722 return false;-
723}-
724void QAbstractScrollArea::resizeEvent(QResizeEvent *)-
725{-
726}-
727void QAbstractScrollArea::paintEvent(QPaintEvent*)-
728{-
729}-
730void QAbstractScrollArea::mousePressEvent(QMouseEvent *e)-
731{-
732 e->ignore();-
733}-
734void QAbstractScrollArea::mouseReleaseEvent(QMouseEvent *e)-
735{-
736 e->ignore();-
737}-
738void QAbstractScrollArea::mouseDoubleClickEvent(QMouseEvent *e)-
739{-
740 e->ignore();-
741}-
742void QAbstractScrollArea::mouseMoveEvent(QMouseEvent *e)-
743{-
744 e->ignore();-
745}-
746void QAbstractScrollArea::wheelEvent(QWheelEvent *e)-
747{-
748 QAbstractScrollAreaPrivate * const d = d_func();-
749 if (static_cast<QWheelEvent*>(e)->orientation() == Qt::Horizontal)-
750 QApplication::sendEvent(d->hbar, e);-
751 else-
752 QApplication::sendEvent(d->vbar, e);-
753}-
754void QAbstractScrollArea::contextMenuEvent(QContextMenuEvent *e)-
755{-
756 e->ignore();-
757}-
758-
759-
760-
761-
762-
763-
764-
765void QAbstractScrollArea::keyPressEvent(QKeyEvent * e)-
766{-
767 QAbstractScrollAreaPrivate * const d = d_func();-
768 if (false){
dead code: { }
-
769-
770 }
dead code: { }
 else if (e == QKeySequence::MoveToPreviousPage) {		-
771 d->vbar->triggerAction(QScrollBar::SliderPageStepSub);-
772 } else if (e == QKeySequence::MoveToNextPage) {-
773 d->vbar->triggerAction(QScrollBar::SliderPageStepAdd);-
774-
775 } else {-
776-
777-
778-
779-
780-
781-
782 switch (e->key()) {-
783 case Qt::Key_Up:-
784 d->vbar->triggerAction(QScrollBar::SliderSingleStepSub);-
785 break;-
786 case Qt::Key_Down:-
787 d->vbar->triggerAction(QScrollBar::SliderSingleStepAdd);-
788 break;-
789 case Qt::Key_Left:-
790 d->hbar->triggerAction(-
791 layoutDirection() == Qt::LeftToRight-
792 ? QScrollBar::SliderSingleStepSub : QScrollBar::SliderSingleStepAdd);-
793 break;-
794 case Qt::Key_Right:-
795 d->hbar->triggerAction(-
796 layoutDirection() == Qt::LeftToRight-
797 ? QScrollBar::SliderSingleStepAdd : QScrollBar::SliderSingleStepSub);-
798 break;-
799 default:-
800 e->ignore();-
801 return;-
802 }-
803 }-
804 e->accept();-
805}-
806void QAbstractScrollArea::dragEnterEvent(QDragEnterEvent *)-
807{-
808}-
809void QAbstractScrollArea::dragMoveEvent(QDragMoveEvent *)-
810{-
811}-
812void QAbstractScrollArea::dragLeaveEvent(QDragLeaveEvent *)-
813{-
814}-
815void QAbstractScrollArea::dropEvent(QDropEvent *)-
816{-
817}-
818void QAbstractScrollArea::scrollContentsBy(int, int)-
819{-
820 viewport()->update();-
821}-
822-
823bool QAbstractScrollAreaPrivate::canStartScrollingAt( const QPoint &startPos )-
824{-
825 QAbstractScrollArea * const q = q_func();-
826-
827-
828-
829-
830 if (QGraphicsView *view = qobject_cast<QGraphicsView *>(q)) {-
831 if (view->dragMode() != QGraphicsView::NoDrag)-
832 return false;-
833-
834 QGraphicsItem *childItem = view->itemAt(startPos);-
835-
836 if (childItem && (childItem->flags() & QGraphicsItem::ItemIsMovable))-
837 return false;-
838 }-
839-
840-
841-
842 if (qobject_cast<QAbstractSlider *>(q->viewport()->childAt(startPos))) {-
843 return false;-
844 }-
845-
846 return true;-
847}-
848-
849void QAbstractScrollAreaPrivate::flashScrollBars()-
850{-
851 bool htransient = hbar->style()->styleHint(QStyle::SH_ScrollBar_Transient, 0, hbar);-
852 if ((hbarpolicy != Qt::ScrollBarAlwaysOff) && (hbarpolicy == Qt::ScrollBarAsNeeded || htransient))-
853 hbar->d_func()->flash();-
854 bool vtransient = vbar->style()->styleHint(QStyle::SH_ScrollBar_Transient, 0, vbar);-
855 if ((vbarpolicy != Qt::ScrollBarAlwaysOff) && (vbarpolicy == Qt::ScrollBarAsNeeded || vtransient))-
856 vbar->d_func()->flash();-
857}-
858-
859void QAbstractScrollAreaPrivate::setScrollBarTransient(QScrollBar *scrollBar, bool transient)-
860{-
861 scrollBar->d_func()->setTransient(transient);-
862}-
863-
864void QAbstractScrollAreaPrivate::_q_hslide(int x)-
865{-
866 QAbstractScrollArea * const q = q_func();-
867 int dx = xoffset - x;-
868 xoffset = x;-
869 q->scrollContentsBy(dx, 0);-
870 flashScrollBars();-
871}-
872-
873void QAbstractScrollAreaPrivate::_q_vslide(int y)-
874{-
875 QAbstractScrollArea * const q = q_func();-
876 int dy = yoffset - y;-
877 yoffset = y;-
878 q->scrollContentsBy(0, dy);-
879 flashScrollBars();-
880}-
881-
882void QAbstractScrollAreaPrivate::_q_showOrHideScrollBars()-
883{-
884 layoutChildren();-
885-
886-
887-
888-
889-
890-
891-
892}-
893-
894QPoint QAbstractScrollAreaPrivate::contentsOffset() const-
895{-
896 const QAbstractScrollArea * const q = q_func();-
897 QPoint offset;-
898 if (vbar->isVisible())-
899 offset.setY(vbar->value());-
900 if (hbar->isVisible()) {-
901 if (q->isRightToLeft())-
902 offset.setX(hbar->maximum() - hbar->value());-
903 else-
904 offset.setX(hbar->value());-
905 }-
906 return offset;-
907}-
908-
909-
910-
911-
912-
913QSize QAbstractScrollArea::minimumSizeHint() const-
914{-
915 const QAbstractScrollAreaPrivate * const d = d_func();-
916 int hsbExt = d->hbar->sizeHint().height();-
917 int vsbExt = d->vbar->sizeHint().width();-
918 int extra = 2 * d->frameWidth;-
919 QStyleOption opt;-
920 opt.initFrom(this);-
921 if ((d->frameStyle != QFrame::NoFrame)-
922 && style()->styleHint(QStyle::SH_ScrollView_FrameOnlyAroundContents, &opt, this)) {-
923 extra += style()->pixelMetric(QStyle::PM_ScrollView_ScrollBarSpacing, &opt, this);-
924 }-
925 return QSize(d->scrollBarContainers[Qt::Horizontal]->sizeHint().width() + vsbExt + extra,-
926 d->scrollBarContainers[Qt::Vertical]->sizeHint().height() + hsbExt + extra);-
927}-
928-
929-
930-
931-
932-
933-
934QSize QAbstractScrollArea::sizeHint() const-
935{-
936 const QAbstractScrollAreaPrivate * const d = d_func();-
937 if (d->sizeAdjustPolicy == QAbstractScrollArea::AdjustIgnored)-
938 return QSize(256, 192);-
939-
940 if (!d->sizeHint.isValid() || d->sizeAdjustPolicy == QAbstractScrollArea::AdjustToContents) {-
941 const int f = 2 * d->frameWidth;-
942 const QSize frame( f, f );-
943 const QSize scrollbars(d->vbarpolicy == Qt::ScrollBarAlwaysOn ? d->vbar->sizeHint().width() : 0,-
944 d->hbarpolicy == Qt::ScrollBarAlwaysOn ? d->hbar->sizeHint().height() : 0);-
945 d->sizeHint = frame + scrollbars + viewportSizeHint();-
946 }-
947 return d->sizeHint;-
948}-
949-
950-
951-
952-
953-
954-
955-
956QSize QAbstractScrollArea::viewportSizeHint() const-
957{-
958 const QAbstractScrollAreaPrivate * const d = d_func();-
959 if (d->viewport) {-
960 const QSize sh = d->viewport->sizeHint();-
961 if (sh.isValid()) {-
962 return sh;-
963 }-
964 }-
965 const int h = qMax(10, fontMetrics().height());-
966 return QSize(6 * h, 4 * h);-
967}-
968QAbstractScrollArea::SizeAdjustPolicy QAbstractScrollArea::sizeAdjustPolicy() const-
969{-
970 const QAbstractScrollAreaPrivate * const d = d_func();-
971 return d->sizeAdjustPolicy;-
972}-
973-
974void QAbstractScrollArea::setSizeAdjustPolicy(SizeAdjustPolicy policy)-
975{-
976 QAbstractScrollAreaPrivate * const d = d_func();-
977 if (d->sizeAdjustPolicy == policy)-
978 return;-
979-
980 d->sizeAdjustPolicy = policy;-
981 d->sizeHint = QSize();-
982 updateGeometry();-
983}-
984void QAbstractScrollArea::setupViewport(QWidget *viewport)-
985{-
986 (void)viewport;;-
987}-
988-
989-
990-
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