source: trunk/src/gui/kernel/qmacgesturerecognizer_mac.mm@ 561

Last change on this file since 561 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
  • Property svn:eol-style set to native
File size: 9.3 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
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38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qmacgesturerecognizer_mac_p.h"
43#include "qgesture.h"
44#include "qgesture_p.h"
45#include "qevent.h"
46#include "qevent_p.h"
47#include "qwidget.h"
48#include "qdebug.h"
49
50QT_BEGIN_NAMESPACE
51
52QMacSwipeGestureRecognizer::QMacSwipeGestureRecognizer()
53{
54}
55
56QGesture *QMacSwipeGestureRecognizer::create(QObject * /*target*/)
57{
58 return new QSwipeGesture;
59}
60
61QGestureRecognizer::Result
62QMacSwipeGestureRecognizer::recognize(QGesture *gesture, QObject *obj, QEvent *event)
63{
64 if (event->type() == QEvent::NativeGesture && obj->isWidgetType()) {
65 QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event);
66 switch (ev->gestureType) {
67 case QNativeGestureEvent::Swipe: {
68 QSwipeGesture *g = static_cast<QSwipeGesture *>(gesture);
69 g->setSwipeAngle(ev->angle);
70 return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
71 break; }
72 default:
73 break;
74 }
75 }
76
77 return QGestureRecognizer::Ignore;
78}
79
80void QMacSwipeGestureRecognizer::reset(QGesture *gesture)
81{
82 QSwipeGesture *g = static_cast<QSwipeGesture *>(gesture);
83 g->setSwipeAngle(0);
84 QGestureRecognizer::reset(gesture);
85}
86
87////////////////////////////////////////////////////////////////////////
88
89QMacPinchGestureRecognizer::QMacPinchGestureRecognizer()
90{
91}
92
93QGesture *QMacPinchGestureRecognizer::create(QObject * /*target*/)
94{
95 return new QPinchGesture;
96}
97
98QGestureRecognizer::Result
99QMacPinchGestureRecognizer::recognize(QGesture *gesture, QObject *obj, QEvent *event)
100{
101 if (event->type() == QEvent::NativeGesture && obj->isWidgetType()) {
102 QPinchGesture *g = static_cast<QPinchGesture *>(gesture);
103 QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event);
104 switch(ev->gestureType) {
105 case QNativeGestureEvent::GestureBegin:
106 reset(gesture);
107 g->setStartCenterPoint(static_cast<QWidget*>(obj)->mapFromGlobal(ev->position));
108 g->setCenterPoint(g->startCenterPoint());
109 g->setChangeFlags(QPinchGesture::CenterPointChanged);
110 g->setTotalChangeFlags(g->totalChangeFlags() | g->changeFlags());
111 return QGestureRecognizer::MayBeGesture | QGestureRecognizer::ConsumeEventHint;
112 case QNativeGestureEvent::Rotate: {
113 g->setLastScaleFactor(g->scaleFactor());
114 g->setLastRotationAngle(g->rotationAngle());
115 g->setRotationAngle(g->rotationAngle() + ev->percentage);
116 g->setChangeFlags(QPinchGesture::RotationAngleChanged);
117 g->setTotalChangeFlags(g->totalChangeFlags() | g->changeFlags());
118 return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
119 }
120 case QNativeGestureEvent::Zoom:
121 g->setLastScaleFactor(g->scaleFactor());
122 g->setLastRotationAngle(g->rotationAngle());
123 g->setScaleFactor(g->scaleFactor() * (1 + ev->percentage));
124 g->setChangeFlags(QPinchGesture::ScaleFactorChanged);
125 g->setTotalChangeFlags(g->totalChangeFlags() | g->changeFlags());
126 return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
127 case QNativeGestureEvent::GestureEnd:
128 return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
129 default:
130 break;
131 }
132 }
133
134 return QGestureRecognizer::Ignore;
135}
136
137void QMacPinchGestureRecognizer::reset(QGesture *gesture)
138{
139 QPinchGesture *g = static_cast<QPinchGesture *>(gesture);
140 g->setChangeFlags(0);
141 g->setTotalChangeFlags(0);
142 g->setScaleFactor(1.0f);
143 g->setTotalScaleFactor(1.0f);
144 g->setLastScaleFactor(1.0f);
145 g->setRotationAngle(0.0f);
146 g->setTotalRotationAngle(0.0f);
147 g->setLastRotationAngle(0.0f);
148 g->setCenterPoint(QPointF());
149 g->setStartCenterPoint(QPointF());
150 g->setLastCenterPoint(QPointF());
151 QGestureRecognizer::reset(gesture);
152}
153
154////////////////////////////////////////////////////////////////////////
155
156#if defined(QT_MAC_USE_COCOA)
157
158QMacPanGestureRecognizer::QMacPanGestureRecognizer() : _panCanceled(true)
159{
160}
161
162QGesture *QMacPanGestureRecognizer::create(QObject *target)
163{
164 if (!target)
165 return new QPanGesture;
166
167 if (QWidget *w = qobject_cast<QWidget *>(target)) {
168 w->setAttribute(Qt::WA_AcceptTouchEvents);
169 w->setAttribute(Qt::WA_TouchPadAcceptSingleTouchEvents);
170 return new QPanGesture;
171 }
172 return 0;
173}
174
175QGestureRecognizer::Result
176QMacPanGestureRecognizer::recognize(QGesture *gesture, QObject *target, QEvent *event)
177{
178 const int panBeginDelay = 300;
179 const int panBeginRadius = 3;
180
181 QPanGesture *g = static_cast<QPanGesture *>(gesture);
182
183 switch (event->type()) {
184 case QEvent::TouchBegin: {
185 const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
186 if (ev->touchPoints().size() == 1) {
187 reset(gesture);
188 _startPos = QCursor::pos();
189 _panTimer.start(panBeginDelay, target);
190 _panCanceled = false;
191 return QGestureRecognizer::MayBeGesture;
192 }
193 break;}
194 case QEvent::TouchEnd: {
195 if (_panCanceled)
196 break;
197
198 const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
199 if (ev->touchPoints().size() == 1)
200 return QGestureRecognizer::FinishGesture;
201 break;}
202 case QEvent::TouchUpdate: {
203 if (_panCanceled)
204 break;
205
206 const QTouchEvent *ev = static_cast<const QTouchEvent*>(event);
207 if (ev->touchPoints().size() == 1) {
208 if (_panTimer.isActive()) {
209 // INVARIANT: Still in maybeGesture. Check if the user
210 // moved his finger so much that it makes sense to cancel the pan:
211 const QPointF p = QCursor::pos();
212 if ((p - _startPos).manhattanLength() > panBeginRadius) {
213 _panCanceled = true;
214 _panTimer.stop();
215 return QGestureRecognizer::CancelGesture;
216 }
217 } else {
218 const QPointF p = QCursor::pos();
219 const QPointF posOffset = p - _startPos;
220 g->setLastOffset(g->offset());
221 g->setOffset(QPointF(posOffset.x(), posOffset.y()));
222 return QGestureRecognizer::TriggerGesture;
223 }
224 } else if (_panTimer.isActive()) {
225 // I only want to cancel the pan if the user is pressing
226 // more than one finger, and the pan hasn't started yet:
227 _panCanceled = true;
228 _panTimer.stop();
229 return QGestureRecognizer::CancelGesture;
230 }
231 break;}
232 case QEvent::Timer: {
233 QTimerEvent *ev = static_cast<QTimerEvent *>(event);
234 if (ev->timerId() == _panTimer.timerId()) {
235 _panTimer.stop();
236 if (_panCanceled)
237 break;
238 // Begin new pan session!
239 _startPos = QCursor::pos();
240 return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
241 }
242 break; }
243 default:
244 break;
245 }
246
247 return QGestureRecognizer::Ignore;
248}
249
250void QMacPanGestureRecognizer::reset(QGesture *gesture)
251{
252 QPanGesture *g = static_cast<QPanGesture *>(gesture);
253 _startPos = QPointF();
254 _panCanceled = true;
255 g->setOffset(QPointF(0, 0));
256 g->setLastOffset(QPointF(0, 0));
257 g->setAcceleration(qreal(1));
258 QGestureRecognizer::reset(gesture);
259}
260#endif // QT_MAC_USE_COCOA
261
262QT_END_NAMESPACE
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