qstandardgestures.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtWidgets module of the Qt Toolkit.-
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29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34#include "qstandardgestures_p.h"-
35#include "qgesture.h"-
36#include "qgesture_p.h"-
37#include "qevent.h"-
38#include "qwidget.h"-
39#include "qabstractscrollarea.h"-
40#include <qgraphicssceneevent.h>-
41#include "qdebug.h"-
42-
43#ifndef QT_NO_GESTURES-
44-
45QT_BEGIN_NAMESPACE-
46-
47// If the change in scale for a single touch event is out of this range,-
48// we consider it to be spurious.-
49static const qreal kSingleStepScaleMax = 2.0;-
50static const qreal kSingleStepScaleMin = 0.1;-
51-
52QGesture *QPanGestureRecognizer::create(QObject *target)-
53{-
54 if (target && target->isWidgetType()) {
targetDescription
TRUEnever evaluated
FALSEnever evaluated
target->isWidgetType()Description
TRUEnever evaluated
FALSEnever evaluated
0
55#if (defined(Q_OS_MACX) || defined(Q_OS_WIN)) && !defined(QT_NO_NATIVE_GESTURES)-
56 // for scroll areas on Windows and OS X we want to use native gestures instead-
57 if (!qobject_cast<QAbstractScrollArea *>(target->parent()))-
58 static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);-
59#else-
60 static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);-
61#endif-
62 }
never executed: end of block
0
63 return new QPanGesture;
never executed: return new QPanGesture;
0
64}-
65-
66static QPointF panOffset(const QList<QTouchEvent::TouchPoint> &touchPoints, int maxCount)-
67{-
68 QPointF result;-
69 const int count = qMin(touchPoints.size(), maxCount);-
70 for (int p = 0; p < count; ++p)
p < countDescription
TRUEnever evaluated
FALSEnever evaluated
0
71 result += touchPoints.at(p).pos() - touchPoints.at(p).startPos();
never executed: result += touchPoints.at(p).pos() - touchPoints.at(p).startPos();
0
72 return result / qreal(count);
never executed: return result / qreal(count);
0
73}-
74-
75QGestureRecognizer::Result QPanGestureRecognizer::recognize(QGesture *state,-
76 QObject *,-
77 QEvent *event)-
78{-
79 QPanGesture *q = static_cast<QPanGesture *>(state);-
80 QPanGesturePrivate *d = q->d_func();-
81-
82 QGestureRecognizer::Result result = QGestureRecognizer::Ignore;-
83 switch (event->type()) {-
84 case QEvent::TouchBegin: {
never executed: case QEvent::TouchBegin:
0
85 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
86 result = QGestureRecognizer::MayBeGesture;-
87 QTouchEvent::TouchPoint p = ev->touchPoints().at(0);-
88 d->lastOffset = d->offset = QPointF();-
89 d->pointCount = m_pointCount;-
90 break;
never executed: break;
0
91 }-
92 case QEvent::TouchEnd: {
never executed: case QEvent::TouchEnd:
0
93 if (q->state() != Qt::NoGesture) {
q->state() != Qt::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
0
94 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
95 if (ev->touchPoints().size() == d->pointCount) {
ev->touchPoint... d->pointCountDescription
TRUEnever evaluated
FALSEnever evaluated
0
96 d->lastOffset = d->offset;-
97 d->offset = panOffset(ev->touchPoints(), d->pointCount);-
98 }
never executed: end of block
0
99 result = QGestureRecognizer::FinishGesture;-
100 } else {
never executed: end of block
0
101 result = QGestureRecognizer::CancelGesture;-
102 }
never executed: end of block
0
103 break;
never executed: break;
0
104 }-
105 case QEvent::TouchUpdate: {
never executed: case QEvent::TouchUpdate:
0
106 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
107 if (ev->touchPoints().size() >= d->pointCount) {
ev->touchPoint... d->pointCountDescription
TRUEnever evaluated
FALSEnever evaluated
0
108 d->lastOffset = d->offset;-
109 d->offset = panOffset(ev->touchPoints(), d->pointCount);-
110 if (d->offset.x() > 10 || d->offset.y() > 10 ||
d->offset.x() > 10Description
TRUEnever evaluated
FALSEnever evaluated
d->offset.y() > 10Description
TRUEnever evaluated
FALSEnever evaluated
0
111 d->offset.x() < -10 || d->offset.y() < -10) {
d->offset.x() < -10Description
TRUEnever evaluated
FALSEnever evaluated
d->offset.y() < -10Description
TRUEnever evaluated
FALSEnever evaluated
0
112 q->setHotSpot(ev->touchPoints().first().startScreenPos());-
113 result = QGestureRecognizer::TriggerGesture;-
114 } else {
never executed: end of block
0
115 result = QGestureRecognizer::MayBeGesture;-
116 }
never executed: end of block
0
117 }-
118 break;
never executed: break;
0
119 }-
120 default:
never executed: default:
0
121 break;
never executed: break;
0
122 }-
123 return result;
never executed: return result;
0
124}-
125-
126void QPanGestureRecognizer::reset(QGesture *state)-
127{-
128 QPanGesture *pan = static_cast<QPanGesture*>(state);-
129 QPanGesturePrivate *d = pan->d_func();-
130-
131 d->lastOffset = d->offset = QPointF();-
132 d->acceleration = 0;-
133-
134 QGestureRecognizer::reset(state);-
135}
never executed: end of block
0
136-
137-
138//-
139// QPinchGestureRecognizer-
140//-
141-
142QPinchGestureRecognizer::QPinchGestureRecognizer()-
143{-
144}-
145-
146QGesture *QPinchGestureRecognizer::create(QObject *target)-
147{-
148 if (target && target->isWidgetType()) {
targetDescription
TRUEnever evaluated
FALSEnever evaluated
target->isWidgetType()Description
TRUEnever evaluated
FALSEnever evaluated
0
149 static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);-
150 }
never executed: end of block
0
151 return new QPinchGesture;
never executed: return new QPinchGesture;
0
152}-
153-
154QGestureRecognizer::Result QPinchGestureRecognizer::recognize(QGesture *state,-
155 QObject *,-
156 QEvent *event)-
157{-
158 QPinchGesture *q = static_cast<QPinchGesture *>(state);-
159 QPinchGesturePrivate *d = q->d_func();-
160-
161 QGestureRecognizer::Result result = QGestureRecognizer::Ignore;-
162-
163 switch (event->type()) {-
164 case QEvent::TouchBegin: {
never executed: case QEvent::TouchBegin:
0
165 result = QGestureRecognizer::MayBeGesture;-
166 break;
never executed: break;
0
167 }-
168 case QEvent::TouchEnd: {
never executed: case QEvent::TouchEnd:
0
169 if (q->state() != Qt::NoGesture) {
q->state() != Qt::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
0
170 result = QGestureRecognizer::FinishGesture;-
171 } else {
never executed: end of block
0
172 result = QGestureRecognizer::CancelGesture;-
173 }
never executed: end of block
0
174 break;
never executed: break;
0
175 }-
176 case QEvent::TouchUpdate: {
never executed: case QEvent::TouchUpdate:
0
177 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
178 d->changeFlags = 0;-
179 if (ev->touchPoints().size() == 2) {
ev->touchPoints().size() == 2Description
TRUEnever evaluated
FALSEnever evaluated
0
180 QTouchEvent::TouchPoint p1 = ev->touchPoints().at(0);-
181 QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);-
182-
183 d->hotSpot = p1.screenPos();-
184 d->isHotSpotSet = true;-
185-
186 QPointF centerPoint = (p1.screenPos() + p2.screenPos()) / 2.0;-
187 if (d->isNewSequence) {
d->isNewSequenceDescription
TRUEnever evaluated
FALSEnever evaluated
0
188 d->startPosition[0] = p1.screenPos();-
189 d->startPosition[1] = p2.screenPos();-
190 d->lastCenterPoint = centerPoint;-
191 } else {
never executed: end of block
0
192 d->lastCenterPoint = d->centerPoint;-
193 }
never executed: end of block
0
194 d->centerPoint = centerPoint;-
195-
196 d->changeFlags |= QPinchGesture::CenterPointChanged;-
197-
198 if (d->isNewSequence) {
d->isNewSequenceDescription
TRUEnever evaluated
FALSEnever evaluated
0
199 d->scaleFactor = 1.0;-
200 d->lastScaleFactor = 1.0;-
201 } else {
never executed: end of block
0
202 d->lastScaleFactor = d->scaleFactor;-
203 QLineF line(p1.screenPos(), p2.screenPos());-
204 QLineF lastLine(p1.lastScreenPos(), p2.lastScreenPos());-
205 qreal newScaleFactor = line.length() / lastLine.length();-
206 if (newScaleFactor > kSingleStepScaleMax || newScaleFactor < kSingleStepScaleMin)
newScaleFactor...leStepScaleMaxDescription
TRUEnever evaluated
FALSEnever evaluated
newScaleFactor...leStepScaleMinDescription
TRUEnever evaluated
FALSEnever evaluated
0
207 return QGestureRecognizer::Ignore;
never executed: return QGestureRecognizer::Ignore;
0
208 d->scaleFactor = newScaleFactor;-
209 }
never executed: end of block
0
210 d->totalScaleFactor = d->totalScaleFactor * d->scaleFactor;-
211 d->changeFlags |= QPinchGesture::ScaleFactorChanged;-
212-
213 qreal angle = QLineF(p1.screenPos(), p2.screenPos()).angle();-
214 if (angle > 180)
angle > 180Description
TRUEnever evaluated
FALSEnever evaluated
0
215 angle -= 360;
never executed: angle -= 360;
0
216 qreal startAngle = QLineF(p1.startScreenPos(), p2.startScreenPos()).angle();-
217 if (startAngle > 180)
startAngle > 180Description
TRUEnever evaluated
FALSEnever evaluated
0
218 startAngle -= 360;
never executed: startAngle -= 360;
0
219 const qreal rotationAngle = startAngle - angle;-
220 if (d->isNewSequence)
d->isNewSequenceDescription
TRUEnever evaluated
FALSEnever evaluated
0
221 d->lastRotationAngle = 0.0;
never executed: d->lastRotationAngle = 0.0;
0
222 else-
223 d->lastRotationAngle = d->rotationAngle;
never executed: d->lastRotationAngle = d->rotationAngle;
0
224 d->rotationAngle = rotationAngle;-
225 d->totalRotationAngle += d->rotationAngle - d->lastRotationAngle;-
226 d->changeFlags |= QPinchGesture::RotationAngleChanged;-
227-
228 d->totalChangeFlags |= d->changeFlags;-
229 d->isNewSequence = false;-
230 result = QGestureRecognizer::TriggerGesture;-
231 } else {
never executed: end of block
0
232 d->isNewSequence = true;-
233 if (q->state() == Qt::NoGesture)
q->state() == Qt::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
0
234 result = QGestureRecognizer::Ignore;
never executed: result = QGestureRecognizer::Ignore;
0
235 else-
236 result = QGestureRecognizer::FinishGesture;
never executed: result = QGestureRecognizer::FinishGesture;
0
237 }-
238 break;
never executed: break;
0
239 }-
240 default:
never executed: default:
0
241 break;
never executed: break;
0
242 }-
243 return result;
never executed: return result;
0
244}-
245-
246void QPinchGestureRecognizer::reset(QGesture *state)-
247{-
248 QPinchGesture *pinch = static_cast<QPinchGesture *>(state);-
249 QPinchGesturePrivate *d = pinch->d_func();-
250-
251 d->totalChangeFlags = d->changeFlags = 0;-
252-
253 d->startCenterPoint = d->lastCenterPoint = d->centerPoint = QPointF();-
254 d->totalScaleFactor = d->lastScaleFactor = d->scaleFactor = 1;-
255 d->totalRotationAngle = d->lastRotationAngle = d->rotationAngle = 0;-
256-
257 d->isNewSequence = true;-
258 d->startPosition[0] = d->startPosition[1] = QPointF();-
259-
260 QGestureRecognizer::reset(state);-
261}
never executed: end of block
0
262-
263//-
264// QSwipeGestureRecognizer-
265//-
266-
267QSwipeGestureRecognizer::QSwipeGestureRecognizer()-
268{-
269}-
270-
271QGesture *QSwipeGestureRecognizer::create(QObject *target)-
272{-
273 if (target && target->isWidgetType()) {
targetDescription
TRUEnever evaluated
FALSEnever evaluated
target->isWidgetType()Description
TRUEnever evaluated
FALSEnever evaluated
0
274 static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);-
275 }
never executed: end of block
0
276 return new QSwipeGesture;
never executed: return new QSwipeGesture;
0
277}-
278-
279QGestureRecognizer::Result QSwipeGestureRecognizer::recognize(QGesture *state,-
280 QObject *,-
281 QEvent *event)-
282{-
283 QSwipeGesture *q = static_cast<QSwipeGesture *>(state);-
284 QSwipeGesturePrivate *d = q->d_func();-
285-
286 QGestureRecognizer::Result result = QGestureRecognizer::Ignore;-
287-
288 switch (event->type()) {-
289 case QEvent::TouchBegin: {
never executed: case QEvent::TouchBegin:
0
290 d->velocityValue = 1;-
291 d->time.start();-
292 d->state = QSwipeGesturePrivate::Started;-
293 result = QGestureRecognizer::MayBeGesture;-
294 break;
never executed: break;
0
295 }-
296 case QEvent::TouchEnd: {
never executed: case QEvent::TouchEnd:
0
297 if (q->state() != Qt::NoGesture) {
q->state() != Qt::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
0
298 result = QGestureRecognizer::FinishGesture;-
299 } else {
never executed: end of block
0
300 result = QGestureRecognizer::CancelGesture;-
301 }
never executed: end of block
0
302 break;
never executed: break;
0
303 }-
304 case QEvent::TouchUpdate: {
never executed: case QEvent::TouchUpdate:
0
305 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
306 if (d->state == QSwipeGesturePrivate::NoGesture)
d->state == QS...ate::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
0
307 result = QGestureRecognizer::CancelGesture;
never executed: result = QGestureRecognizer::CancelGesture;
0
308 else if (ev->touchPoints().size() == 3) {
ev->touchPoints().size() == 3Description
TRUEnever evaluated
FALSEnever evaluated
0
309 d->state = QSwipeGesturePrivate::ThreePointsReached;-
310 QTouchEvent::TouchPoint p1 = ev->touchPoints().at(0);-
311 QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);-
312 QTouchEvent::TouchPoint p3 = ev->touchPoints().at(2);-
313-
314 if (d->lastPositions[0].isNull()) {
d->lastPositions[0].isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
315 d->lastPositions[0] = p1.startScreenPos().toPoint();-
316 d->lastPositions[1] = p2.startScreenPos().toPoint();-
317 d->lastPositions[2] = p3.startScreenPos().toPoint();-
318 }
never executed: end of block
0
319 d->hotSpot = p1.screenPos();-
320 d->isHotSpotSet = true;-
321-
322 int xDistance = (p1.screenPos().x() - d->lastPositions[0].x() +-
323 p2.screenPos().x() - d->lastPositions[1].x() +-
324 p3.screenPos().x() - d->lastPositions[2].x()) / 3;-
325 int yDistance = (p1.screenPos().y() - d->lastPositions[0].y() +-
326 p2.screenPos().y() - d->lastPositions[1].y() +-
327 p3.screenPos().y() - d->lastPositions[2].y()) / 3;-
328-
329 const int distance = xDistance >= yDistance ? xDistance : yDistance;
xDistance >= yDistanceDescription
TRUEnever evaluated
FALSEnever evaluated
0
330 int elapsedTime = d->time.restart();-
331 if (!elapsedTime)
!elapsedTimeDescription
TRUEnever evaluated
FALSEnever evaluated
0
332 elapsedTime = 1;
never executed: elapsedTime = 1;
0
333 d->velocityValue = 0.9 * d->velocityValue + (qreal) distance / elapsedTime;-
334 d->swipeAngle = QLineF(p1.startScreenPos(), p1.screenPos()).angle();-
335-
336 static const int MoveThreshold = 50;-
337 static const int directionChangeThreshold = MoveThreshold / 8;-
338 if (qAbs(xDistance) > MoveThreshold || qAbs(yDistance) > MoveThreshold) {
qAbs(xDistance... MoveThresholdDescription
TRUEnever evaluated
FALSEnever evaluated
qAbs(yDistance... MoveThresholdDescription
TRUEnever evaluated
FALSEnever evaluated
0
339 // measure the distance to check if the direction changed-
340 d->lastPositions[0] = p1.screenPos().toPoint();-
341 d->lastPositions[1] = p2.screenPos().toPoint();-
342 d->lastPositions[2] = p3.screenPos().toPoint();-
343 result = QGestureRecognizer::TriggerGesture;-
344 // QTBUG-46195, small changes in direction should not cause the gesture to be canceled.-
345 if (d->verticalDirection == QSwipeGesture::NoDirection || qAbs(yDistance) > directionChangeThreshold) {
d->verticalDir...e::NoDirectionDescription
TRUEnever evaluated
FALSEnever evaluated
qAbs(yDistance...hangeThresholdDescription
TRUEnever evaluated
FALSEnever evaluated
0
346 const QSwipeGesture::SwipeDirection vertical = yDistance > 0
yDistance > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
347 ? QSwipeGesture::Down : QSwipeGesture::Up;-
348 if (d->verticalDirection != QSwipeGesture::NoDirection && d->verticalDirection != vertical)
d->verticalDir...e::NoDirectionDescription
TRUEnever evaluated
FALSEnever evaluated
d->verticalDir...on != verticalDescription
TRUEnever evaluated
FALSEnever evaluated
0
349 result = QGestureRecognizer::CancelGesture;
never executed: result = QGestureRecognizer::CancelGesture;
0
350 d->verticalDirection = vertical;-
351 }
never executed: end of block
0
352 if (d->horizontalDirection == QSwipeGesture::NoDirection || qAbs(xDistance) > directionChangeThreshold) {
d->horizontalD...e::NoDirectionDescription
TRUEnever evaluated
FALSEnever evaluated
qAbs(xDistance...hangeThresholdDescription
TRUEnever evaluated
FALSEnever evaluated
0
353 const QSwipeGesture::SwipeDirection horizontal = xDistance > 0
xDistance > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
354 ? QSwipeGesture::Right : QSwipeGesture::Left;-
355 if (d->horizontalDirection != QSwipeGesture::NoDirection && d->horizontalDirection != horizontal)
d->horizontalD...e::NoDirectionDescription
TRUEnever evaluated
FALSEnever evaluated
d->horizontalD... != horizontalDescription
TRUEnever evaluated
FALSEnever evaluated
0
356 result = QGestureRecognizer::CancelGesture;
never executed: result = QGestureRecognizer::CancelGesture;
0
357 d->horizontalDirection = horizontal;-
358 }
never executed: end of block
0
359 } else {
never executed: end of block
0
360 if (q->state() != Qt::NoGesture)
q->state() != Qt::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
0
361 result = QGestureRecognizer::TriggerGesture;
never executed: result = QGestureRecognizer::TriggerGesture;
0
362 else-
363 result = QGestureRecognizer::MayBeGesture;
never executed: result = QGestureRecognizer::MayBeGesture;
0
364 }-
365 } else if (ev->touchPoints().size() > 3) {
ev->touchPoints().size() > 3Description
TRUEnever evaluated
FALSEnever evaluated
0
366 result = QGestureRecognizer::CancelGesture;-
367 } else { // less than 3 touch points
never executed: end of block
0
368 switch (d->state) {-
369 case QSwipeGesturePrivate::NoGesture:
never executed: case QSwipeGesturePrivate::NoGesture:
0
370 result = QGestureRecognizer::MayBeGesture;-
371 break;
never executed: break;
0
372 case QSwipeGesturePrivate::Started:
never executed: case QSwipeGesturePrivate::Started:
0
373 result = QGestureRecognizer::Ignore;-
374 break;
never executed: break;
0
375 case QSwipeGesturePrivate::ThreePointsReached:
never executed: case QSwipeGesturePrivate::ThreePointsReached:
0
376 result = (ev->touchPointStates() & Qt::TouchPointPressed)
(ev->touchPoin...hPointPressed)Description
TRUEnever evaluated
FALSEnever evaluated
0
377 ? QGestureRecognizer::CancelGesture : QGestureRecognizer::Ignore;-
378 break;
never executed: break;
0
379 }-
380 }
never executed: end of block
0
381 break;
never executed: break;
0
382 }-
383 default:
never executed: default:
0
384 break;
never executed: break;
0
385 }-
386 return result;
never executed: return result;
0
387}-
388-
389void QSwipeGestureRecognizer::reset(QGesture *state)-
390{-
391 QSwipeGesture *q = static_cast<QSwipeGesture *>(state);-
392 QSwipeGesturePrivate *d = q->d_func();-
393-
394 d->verticalDirection = d->horizontalDirection = QSwipeGesture::NoDirection;-
395 d->swipeAngle = 0;-
396-
397 d->lastPositions[0] = d->lastPositions[1] = d->lastPositions[2] = QPoint();-
398 d->state = QSwipeGesturePrivate::NoGesture;-
399 d->velocityValue = 0;-
400 d->time.invalidate();-
401-
402 QGestureRecognizer::reset(state);-
403}
never executed: end of block
0
404-
405//-
406// QTapGestureRecognizer-
407//-
408-
409QTapGestureRecognizer::QTapGestureRecognizer()-
410{-
411}-
412-
413QGesture *QTapGestureRecognizer::create(QObject *target)-
414{-
415 if (target && target->isWidgetType()) {
targetDescription
TRUEnever evaluated
FALSEnever evaluated
target->isWidgetType()Description
TRUEnever evaluated
FALSEnever evaluated
0
416 static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);-
417 }
never executed: end of block
0
418 return new QTapGesture;
never executed: return new QTapGesture;
0
419}-
420-
421QGestureRecognizer::Result QTapGestureRecognizer::recognize(QGesture *state,-
422 QObject *,-
423 QEvent *event)-
424{-
425 QTapGesture *q = static_cast<QTapGesture *>(state);-
426 QTapGesturePrivate *d = q->d_func();-
427-
428 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
429-
430 QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;-
431-
432 switch (event->type()) {-
433 case QEvent::TouchBegin: {
never executed: case QEvent::TouchBegin:
0
434 d->position = ev->touchPoints().at(0).pos();-
435 q->setHotSpot(ev->touchPoints().at(0).screenPos());-
436 result = QGestureRecognizer::TriggerGesture;-
437 break;
never executed: break;
0
438 }-
439 case QEvent::TouchUpdate:
never executed: case QEvent::TouchUpdate:
0
440 case QEvent::TouchEnd: {
never executed: case QEvent::TouchEnd:
0
441 if (q->state() != Qt::NoGesture && ev->touchPoints().size() == 1) {
q->state() != Qt::NoGestureDescription
TRUEnever evaluated
FALSEnever evaluated
ev->touchPoints().size() == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
442 QTouchEvent::TouchPoint p = ev->touchPoints().at(0);-
443 QPoint delta = p.pos().toPoint() - p.startPos().toPoint();-
444 enum { TapRadius = 40 };-
445 if (delta.manhattanLength() <= TapRadius) {
delta.manhatta...) <= TapRadiusDescription
TRUEnever evaluated
FALSEnever evaluated
0
446 if (event->type() == QEvent::TouchEnd)
event->type() ...vent::TouchEndDescription
TRUEnever evaluated
FALSEnever evaluated
0
447 result = QGestureRecognizer::FinishGesture;
never executed: result = QGestureRecognizer::FinishGesture;
0
448 else-
449 result = QGestureRecognizer::TriggerGesture;
never executed: result = QGestureRecognizer::TriggerGesture;
0
450 }-
451 }
never executed: end of block
0
452 break;
never executed: break;
0
453 }-
454 case QEvent::MouseButtonPress:
never executed: case QEvent::MouseButtonPress:
0
455 case QEvent::MouseMove:
never executed: case QEvent::MouseMove:
0
456 case QEvent::MouseButtonRelease:
never executed: case QEvent::MouseButtonRelease:
0
457 result = QGestureRecognizer::Ignore;-
458 break;
never executed: break;
0
459 default:
never executed: default:
0
460 result = QGestureRecognizer::Ignore;-
461 break;
never executed: break;
0
462 }-
463 return result;
never executed: return result;
0
464}-
465-
466void QTapGestureRecognizer::reset(QGesture *state)-
467{-
468 QTapGesture *q = static_cast<QTapGesture *>(state);-
469 QTapGesturePrivate *d = q->d_func();-
470-
471 d->position = QPointF();-
472-
473 QGestureRecognizer::reset(state);-
474}
never executed: end of block
0
475-
476//-
477// QTapAndHoldGestureRecognizer-
478//-
479-
480QTapAndHoldGestureRecognizer::QTapAndHoldGestureRecognizer()-
481{-
482}-
483-
484QGesture *QTapAndHoldGestureRecognizer::create(QObject *target)-
485{-
486 if (target && target->isWidgetType()) {
targetDescription
TRUEnever evaluated
FALSEnever evaluated
target->isWidgetType()Description
TRUEnever evaluated
FALSEnever evaluated
0
487 static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);-
488 }
never executed: end of block
0
489 return new QTapAndHoldGesture;
never executed: return new QTapAndHoldGesture;
0
490}-
491-
492QGestureRecognizer::Result-
493QTapAndHoldGestureRecognizer::recognize(QGesture *state, QObject *object,-
494 QEvent *event)-
495{-
496 QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);-
497 QTapAndHoldGesturePrivate *d = q->d_func();-
498-
499 if (object == state && event->type() == QEvent::Timer) {
object == stateDescription
TRUEnever evaluated
FALSEnever evaluated
event->type() == QEvent::TimerDescription
TRUEnever evaluated
FALSEnever evaluated
0
500 q->killTimer(d->timerId);-
501 d->timerId = 0;-
502 return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
never executed: return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
0
503 }-
504-
505 enum { TapRadius = 40 };-
506-
507 switch (event->type()) {-
508#ifndef QT_NO_GRAPHICSVIEW-
509 case QEvent::GraphicsSceneMousePress: {
never executed: case QEvent::GraphicsSceneMousePress:
0
510 const QGraphicsSceneMouseEvent *gsme = static_cast<const QGraphicsSceneMouseEvent *>(event);-
511 d->position = gsme->screenPos();-
512 q->setHotSpot(d->position);-
513 if (d->timerId)
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
0
514 q->killTimer(d->timerId);
never executed: q->killTimer(d->timerId);
0
515 d->timerId = q->startTimer(QTapAndHoldGesturePrivate::Timeout);-
516 return QGestureRecognizer::MayBeGesture; // we don't show a sign of life until the timeout
never executed: return QGestureRecognizer::MayBeGesture;
0
517 }-
518#endif-
519 case QEvent::MouseButtonPress: {
never executed: case QEvent::MouseButtonPress:
0
520 const QMouseEvent *me = static_cast<const QMouseEvent *>(event);-
521 d->position = me->globalPos();-
522 q->setHotSpot(d->position);-
523 if (d->timerId)
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
0
524 q->killTimer(d->timerId);
never executed: q->killTimer(d->timerId);
0
525 d->timerId = q->startTimer(QTapAndHoldGesturePrivate::Timeout);-
526 return QGestureRecognizer::MayBeGesture; // we don't show a sign of life until the timeout
never executed: return QGestureRecognizer::MayBeGesture;
0
527 }-
528 case QEvent::TouchBegin: {
never executed: case QEvent::TouchBegin:
0
529 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
530 d->position = ev->touchPoints().at(0).startScreenPos();-
531 q->setHotSpot(d->position);-
532 if (d->timerId)
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
0
533 q->killTimer(d->timerId);
never executed: q->killTimer(d->timerId);
0
534 d->timerId = q->startTimer(QTapAndHoldGesturePrivate::Timeout);-
535 return QGestureRecognizer::MayBeGesture; // we don't show a sign of life until the timeout
never executed: return QGestureRecognizer::MayBeGesture;
0
536 }-
537#ifndef QT_NO_GRAPHICSVIEW-
538 case QEvent::GraphicsSceneMouseRelease:
never executed: case QEvent::GraphicsSceneMouseRelease:
0
539#endif-
540 case QEvent::MouseButtonRelease:
never executed: case QEvent::MouseButtonRelease:
0
541 case QEvent::TouchEnd:
never executed: case QEvent::TouchEnd:
0
542 return QGestureRecognizer::CancelGesture; // get out of the MayBeGesture state
never executed: return QGestureRecognizer::CancelGesture;
0
543 case QEvent::TouchUpdate: {
never executed: case QEvent::TouchUpdate:
0
544 const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);-
545 if (d->timerId && ev->touchPoints().size() == 1) {
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
ev->touchPoints().size() == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
546 QTouchEvent::TouchPoint p = ev->touchPoints().at(0);-
547 QPoint delta = p.pos().toPoint() - p.startPos().toPoint();-
548 if (delta.manhattanLength() <= TapRadius)
delta.manhatta...) <= TapRadiusDescription
TRUEnever evaluated
FALSEnever evaluated
0
549 return QGestureRecognizer::MayBeGesture;
never executed: return QGestureRecognizer::MayBeGesture;
0
550 }
never executed: end of block
0
551 return QGestureRecognizer::CancelGesture;
never executed: return QGestureRecognizer::CancelGesture;
0
552 }-
553 case QEvent::MouseMove: {
never executed: case QEvent::MouseMove:
0
554 const QMouseEvent *me = static_cast<const QMouseEvent *>(event);-
555 QPoint delta = me->globalPos() - d->position.toPoint();-
556 if (d->timerId && delta.manhattanLength() <= TapRadius)
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
delta.manhatta...) <= TapRadiusDescription
TRUEnever evaluated
FALSEnever evaluated
0
557 return QGestureRecognizer::MayBeGesture;
never executed: return QGestureRecognizer::MayBeGesture;
0
558 return QGestureRecognizer::CancelGesture;
never executed: return QGestureRecognizer::CancelGesture;
0
559 }-
560#ifndef QT_NO_GRAPHICSVIEW-
561 case QEvent::GraphicsSceneMouseMove: {
never executed: case QEvent::GraphicsSceneMouseMove:
0
562 const QGraphicsSceneMouseEvent *gsme = static_cast<const QGraphicsSceneMouseEvent *>(event);-
563 QPoint delta = gsme->screenPos() - d->position.toPoint();-
564 if (d->timerId && delta.manhattanLength() <= TapRadius)
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
delta.manhatta...) <= TapRadiusDescription
TRUEnever evaluated
FALSEnever evaluated
0
565 return QGestureRecognizer::MayBeGesture;
never executed: return QGestureRecognizer::MayBeGesture;
0
566 return QGestureRecognizer::CancelGesture;
never executed: return QGestureRecognizer::CancelGesture;
0
567 }-
568#endif-
569 default:
never executed: default:
0
570 return QGestureRecognizer::Ignore;
never executed: return QGestureRecognizer::Ignore;
0
571 }-
572}-
573-
574void QTapAndHoldGestureRecognizer::reset(QGesture *state)-
575{-
576 QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);-
577 QTapAndHoldGesturePrivate *d = q->d_func();-
578-
579 d->position = QPointF();-
580 if (d->timerId)
d->timerIdDescription
TRUEnever evaluated
FALSEnever evaluated
0
581 q->killTimer(d->timerId);
never executed: q->killTimer(d->timerId);
0
582 d->timerId = 0;-
583-
584 QGestureRecognizer::reset(state);-
585}
never executed: end of block
0
586-
587QT_END_NAMESPACE-
588-
589#endif // QT_NO_GESTURES-
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