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qanimationgroup.cpp

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38 ****************************************************************************/ -

39 -

40 /*! -

41 \class QAnimationGroup -

42 \inmodule QtCore -

43 \brief The QAnimationGroup class is an abstract base class for groups of animations. -

44 \since 4.6 -

45 \ingroup animation -

46 -

47 An animation group is a container for animations (subclasses of -

48 QAbstractAnimation). A group is usually responsible for managing -

49 the \l{QAbstractAnimation::State}{state} of its animations, i.e., -

50 it decides when to start, stop, resume, and pause them. Currently, -

51 Qt provides two such groups: QParallelAnimationGroup and -

52 QSequentialAnimationGroup. Look up their class descriptions for -

53 details. -

54 -

55 Since QAnimationGroup inherits from QAbstractAnimation, you can -

56 combine groups, and easily construct complex animation graphs. -

57 You can query QAbstractAnimation for the group it belongs to -

58 (using the \l{QAbstractAnimation::}{group()} function). -

59 -

60 To start a top-level animation group, you simply use the -

61 \l{QAbstractAnimation::}{start()} function from -

62 QAbstractAnimation. By a top-level animation group, we think of a -

63 group that itself is not contained within another group. Starting -

64 sub groups directly is not supported, and may lead to unexpected -

65 behavior. -

66 -

67 \omit OK, we'll put in a snippet on this here \endomit -

68 -

69 QAnimationGroup provides methods for adding and retrieving -

70 animations. Besides that, you can remove animations by calling -

71 \l removeAnimation(), and clear the animation group by calling -

72 clear(). You may keep track of changes in the group's -

73 animations by listening to QEvent::ChildAdded and -

74 QEvent::ChildRemoved events. -

75 -

76 \omit OK, let's find a snippet here as well. \endomit -

77 -

78 QAnimationGroup takes ownership of the animations it manages, and -

79 ensures that they are deleted when the animation group is deleted. -

80 -

81 \sa QAbstractAnimation, QVariantAnimation, {The Animation Framework} -

82 */ -

83 -

84 #include "qanimationgroup.h" -

85 #include <QtCore/qdebug.h> -

86 #include <QtCore/qcoreevent.h> -

87 #include "qanimationgroup_p.h" -

88 -

89 #ifndef QT_NO_ANIMATION -

90 -

91 #include <algorithm> -

92 -

93 QT_BEGIN_NAMESPACE -

94 -

95 -

96 /*! -

97 Constructs a QAnimationGroup. -

98 \a parent is passed to QObject's constructor. -

99 */ -

100 QAnimationGroup::QAnimationGroup(QObject *parent) -

101 : QAbstractAnimation(*new QAnimationGroupPrivate, parent) -

102 { -

103

}

executed 1 time by 1 test: end of block

Executed by:

tst_QAbstractAnimation

104 -

105 /*! -

106 \internal -

107 */ -

108 QAnimationGroup::QAnimationGroup(QAnimationGroupPrivate &dd, QObject *parent) -

109 : QAbstractAnimation(dd, parent) -

110 { -

111

}

executed 145 times by 6 tests: end of block

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup
tst_QStateMachine

145

112 -

113 /*! -

114 Destroys the animation group. It will also destroy all its animations. -

115 */ -

116 QAnimationGroup::~QAnimationGroup() -

117 { -

118 } -

119 -

120 /*! -

121 Returns a pointer to the animation at \a index in this group. This -

122 function is useful when you need access to a particular animation. \a -

123 index is between 0 and animationCount() - 1. -

124 -

125 \sa animationCount(), indexOfAnimation() -

126 */ -

127 QAbstractAnimation *QAnimationGroup::animationAt(int index) const -

128 { -

129 Q_D(const QAnimationGroup); -

130 -

131

if (index < 0 || index >= d->animations.size()) {

index < 0	Description
TRUE	never evaluated
FALSE	evaluated 85 times by 4 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QSequentialAnimationGroup tst_QStateMachine

index >= d->animations.size()	Description
TRUE	never evaluated
FALSE	evaluated 85 times by 4 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QSequentialAnimationGroup tst_QStateMachine

0-85

132 qWarning("QAnimationGroup::animationAt: index is out of bounds"); -

133

return 0;

never executed: return 0;

134 } -

135 -

136

return d->animations.at(index);

executed 85 times by 4 tests: return d->animations.at(index);

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QSequentialAnimationGroup
tst_QStateMachine

137 } -

138 -

139 -

140 /*! -

141 Returns the number of animations managed by this group. -

142 -

143 \sa indexOfAnimation(), addAnimation(), animationAt() -

144 */ -

145 int QAnimationGroup::animationCount() const -

146 { -

147 Q_D(const QAnimationGroup); -

148

return d->animations.size();

executed 38 times by 4 tests: return d->animations.size();

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QSequentialAnimationGroup
tst_QStateMachine

149 } -

150 -

151 /*! -

152 Returns the index of \a animation. The returned index can be passed -

153 to the other functions that take an index as an argument. -

154 -

155 \sa insertAnimation(), animationAt(), takeAnimation() -

156 */ -

157 int QAnimationGroup::indexOfAnimation(QAbstractAnimation *animation) const -

158 { -

159 Q_D(const QAnimationGroup); -

160

return d->animations.indexOf(animation);

never executed: return d->animations.indexOf(animation);

161 } -

162 -

163 /*! -

164 Adds \a animation to this group. This will call insertAnimation with -

165 index equals to animationCount(). -

166 -

167 \note The group takes ownership of the animation. -

168 -

169 \sa removeAnimation() -

170 */ -

171 void QAnimationGroup::addAnimation(QAbstractAnimation *animation) -

172 { -

173 Q_D(QAnimationGroup); -

174 insertAnimation(d->animations.count(), animation); -

175

}

executed 335 times by 7 tests: end of block

Executed by:

tst_QAbstractAnimation
tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup
tst_QStateMachine

335

176 -

177 /*! -

178 Inserts \a animation into this animation group at \a index. -

179 If \a index is 0 the animation is inserted at the beginning. -

180 If \a index is animationCount(), the animation is inserted at the end. -

181 -

182 \note The group takes ownership of the animation. -

183 -

184 \sa takeAnimation(), addAnimation(), indexOfAnimation(), removeAnimation() -

185 */ -

186 void QAnimationGroup::insertAnimation(int index, QAbstractAnimation *animation) -

187 { -

188 Q_D(QAnimationGroup); -

189 -

190

if (index < 0 || index > d->animations.size()) {

index < 0	Description
TRUE	never evaluated
FALSE	evaluated 337 times by 7 tests Evaluated by: tst_QAbstractAnimation tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup tst_QStateMachine

index > d->animations.size()	Description
TRUE	never evaluated
FALSE	evaluated 337 times by 7 tests Evaluated by: tst_QAbstractAnimation tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup tst_QStateMachine

0-337

191 qWarning("QAnimationGroup::insertAnimation: index is out of bounds"); -

192

return;

never executed: return;

193 } -

194 -

195

if (QAnimationGroup *oldGroup = animation->group())

QAnimationGrou...ation->group()	Description
TRUE	evaluated 2 times by 1 test Evaluated by: tst_QAnimationGroup
FALSE	evaluated 335 times by 7 tests Evaluated by: tst_QAbstractAnimation tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup tst_QStateMachine

2-335

196

oldGroup->removeAnimation(animation);

executed 2 times by 1 test: oldGroup->removeAnimation(animation);

Executed by:

tst_QAnimationGroup

197 -

198 d->animations.insert(index, animation); -

199 QAbstractAnimationPrivate::get(animation)->group = this; -

200 // this will make sure that ChildAdded event is sent to 'this' -

201 animation->setParent(this); -

202 d->animationInsertedAt(index); -

203

}

executed 337 times by 7 tests: end of block

Executed by:

tst_QAbstractAnimation
tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup
tst_QStateMachine

337

204 -

205 /*! -

206 Removes \a animation from this group. The ownership of \a animation is -

207 transferred to the caller. -

208 -

209 \sa takeAnimation(), insertAnimation(), addAnimation() -

210 */ -

211 void QAnimationGroup::removeAnimation(QAbstractAnimation *animation) -

212 { -

213 Q_D(QAnimationGroup); -

214 -

215

if (!animation) {

!animation	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 3 tests Evaluated by: tst_QAnimationGroup tst_QPropertyAnimation tst_QSequentialAnimationGroup

0-8

216 qWarning("QAnimationGroup::remove: cannot remove null animation"); -

217

return;

never executed: return;

218 } -

219 int index = d->animations.indexOf(animation); -

220

if (index == -1) {

index == -1	Description
TRUE	never evaluated
FALSE	evaluated 8 times by 3 tests Evaluated by: tst_QAnimationGroup tst_QPropertyAnimation tst_QSequentialAnimationGroup

0-8

221 qWarning("QAnimationGroup::remove: animation is not part of this group"); -

222

return;

never executed: return;

223 } -

224 -

225 takeAnimation(index); -

226

}

executed 8 times by 3 tests: end of block

Executed by:

tst_QAnimationGroup
tst_QPropertyAnimation
tst_QSequentialAnimationGroup

227 -

228 /*! -

229 Returns the animation at \a index and removes it from the animation group. -

230 -

231 \note The ownership of the animation is transferred to the caller. -

232 -

233 \sa removeAnimation(), addAnimation(), insertAnimation(), indexOfAnimation() -

234 */ -

235 QAbstractAnimation *QAnimationGroup::takeAnimation(int index) -

236 { -

237 Q_D(QAnimationGroup); -

238

if (index < 0 || index >= d->animations.size()) {

index < 0	Description
TRUE	never evaluated
FALSE	evaluated 229 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup

index >= d->animations.size()	Description
TRUE	never evaluated
FALSE	evaluated 229 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup

0-229

239 qWarning("QAnimationGroup::takeAnimation: no animation at index %d", index); -

240

return 0;

never executed: return 0;

241 } -

242 QAbstractAnimation *animation = d->animations.at(index); -

243 QAbstractAnimationPrivate::get(animation)->group = 0; -

244 // ### removing from list before doing setParent to avoid inifinite recursion -

245 // in ChildRemoved event -

246 d->animations.removeAt(index); -

247 animation->setParent(0); -

248 d->animationRemoved(index, animation); -

249

return animation;

executed 229 times by 5 tests: return animation;

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup

229

250 } -

251 -

252 /*! -

253 Removes and deletes all animations in this animation group, and resets the current -

254 time to 0. -

255 -

256 \sa addAnimation(), removeAnimation() -

257 */ -

258 void QAnimationGroup::clear() -

259 { -

260 Q_D(QAnimationGroup); -

261 qDeleteAll(d->animations); -

262

}

executed 5 times by 3 tests: end of block

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QSequentialAnimationGroup

263 -

264 /*! -

265 \reimp -

266 */ -

267 bool QAnimationGroup::event(QEvent *event) -

268 { -

269 Q_D(QAnimationGroup); -

270

if (event->type() == QEvent::ChildAdded) {

event->type() ...nt::ChildAdded	Description
TRUE	evaluated 337 times by 7 tests Evaluated by: tst_QAbstractAnimation tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup tst_QStateMachine
FALSE	evaluated 450 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup

337-450

271 QChildEvent *childEvent = static_cast<QChildEvent *>(event); -

272

if (QAbstractAnimation *a = qobject_cast<QAbstractAnimation *>(childEvent->child())) {

QAbstractAnima...vent->child())	Description
TRUE	evaluated 337 times by 7 tests Evaluated by: tst_QAbstractAnimation tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup tst_QStateMachine
FALSE	never evaluated

0-337

273

if (a->group() != this)

a->group() != this	Description
TRUE	evaluated 65 times by 4 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QSequentialAnimationGroup
FALSE	evaluated 272 times by 6 tests Evaluated by: tst_QAbstractAnimation tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPropertyAnimation tst_QSequentialAnimationGroup tst_QStateMachine

65-272

274

addAnimation(a);

executed 65 times by 4 tests: addAnimation(a);

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QSequentialAnimationGroup

275

}

executed 337 times by 7 tests: end of block

Executed by:

tst_QAbstractAnimation
tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup
tst_QStateMachine

337

276

} else if (event->type() == QEvent::ChildRemoved) {

executed 337 times by 7 tests: end of block

Executed by:

tst_QAbstractAnimation
tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup
tst_QStateMachine

event->type() ...::ChildRemoved	Description
TRUE	evaluated 450 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup
FALSE	never evaluated

0-450

277 QChildEvent *childEvent = static_cast<QChildEvent *>(event); -

278 // You can only rely on the child being a QObject because in the QEvent::ChildRemoved -

279 // case it might be called from the destructor. Casting down to QAbstractAnimation then -

280 // entails undefined behavior, so compare items as QObjects (which std::find does internally): -

281 const QList<QAbstractAnimation *>::const_iterator it -

282 = std::find(d->animations.cbegin(), d->animations.cend(), childEvent->child()); -

283

if (it != d->animations.cend())

it != d->animations.cend()	Description
TRUE	evaluated 221 times by 4 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QSequentialAnimationGroup
FALSE	evaluated 229 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup

221-229

284

takeAnimation(it - d->animations.cbegin());

executed 221 times by 4 tests: takeAnimation(it - d->animations.cbegin());

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QSequentialAnimationGroup

221

285

}

executed 450 times by 5 tests: end of block

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup

450

286

return QAbstractAnimation::event(event);

executed 787 times by 7 tests: return QAbstractAnimation::event(event);

Executed by:

tst_QAbstractAnimation
tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup
tst_QStateMachine

787

287 } -

288 -

289 -

290 void QAnimationGroupPrivate::animationRemoved(int index, QAbstractAnimation *) -

291 { -

292 Q_Q(QAnimationGroup); -

293 Q_UNUSED(index); -

294

if (animations.isEmpty()) {

animations.isEmpty()	Description
TRUE	evaluated 77 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup
FALSE	evaluated 152 times by 5 tests Evaluated by: tst_QAnimationGroup tst_QParallelAnimationGroup tst_QPauseAnimation tst_QPropertyAnimation tst_QSequentialAnimationGroup

77-152

295 currentTime = 0; -

296 q->stop(); -

297

}

executed 77 times by 5 tests: end of block

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup

298

}

executed 229 times by 5 tests: end of block

Executed by:

tst_QAnimationGroup
tst_QParallelAnimationGroup
tst_QPauseAnimation
tst_QPropertyAnimation
tst_QSequentialAnimationGroup

229

299 -

300 QT_END_NAMESPACE -

301 -

302 #include "moc_qanimationgroup.cpp" -

303 -

304 #endif //QT_NO_ANIMATION -

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