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Diffstat (limited to 'src/quick/util/qdeclarativestategroup.cpp')
| -rw-r--r-- | src/quick/util/qdeclarativestategroup.cpp | 516 |
1 files changed, 0 insertions, 516 deletions
diff --git a/src/quick/util/qdeclarativestategroup.cpp b/src/quick/util/qdeclarativestategroup.cpp deleted file mode 100644 index 1ed3ffc582..0000000000 --- a/src/quick/util/qdeclarativestategroup.cpp +++ /dev/null @@ -1,516 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qdeclarativestategroup_p.h" - -#include "qdeclarativetransition_p.h" - -#include <private/qdeclarativebinding_p.h> -#include <private/qdeclarativeglobal_p.h> - -#include <QtCore/qstringbuilder.h> -#include <QtCore/qstringlist.h> -#include <QtCore/qdebug.h> - -#include <private/qobject_p.h> -#include <qdeclarativeinfo.h> - -QT_BEGIN_NAMESPACE - -DEFINE_BOOL_CONFIG_OPTION(stateChangeDebug, STATECHANGE_DEBUG); - -class QDeclarativeStateGroupPrivate : public QObjectPrivate -{ - Q_DECLARE_PUBLIC(QDeclarativeStateGroup) -public: - QDeclarativeStateGroupPrivate() - : nullState(0), componentComplete(true), - ignoreTrans(false), applyingState(false), unnamedCount(0) {} - - QString currentState; - QDeclarativeState *nullState; - - static void append_state(QDeclarativeListProperty<QDeclarativeState> *list, QDeclarativeState *state); - static int count_state(QDeclarativeListProperty<QDeclarativeState> *list); - static QDeclarativeState *at_state(QDeclarativeListProperty<QDeclarativeState> *list, int index); - static void clear_states(QDeclarativeListProperty<QDeclarativeState> *list); - - static void append_transition(QDeclarativeListProperty<QDeclarativeTransition> *list, QDeclarativeTransition *state); - static int count_transitions(QDeclarativeListProperty<QDeclarativeTransition> *list); - static QDeclarativeTransition *at_transition(QDeclarativeListProperty<QDeclarativeTransition> *list, int index); - static void clear_transitions(QDeclarativeListProperty<QDeclarativeTransition> *list); - - QList<QDeclarativeState *> states; - QList<QDeclarativeTransition *> transitions; - - bool componentComplete; - bool ignoreTrans; - bool applyingState; - int unnamedCount; - - QDeclarativeTransition *findTransition(const QString &from, const QString &to); - void setCurrentStateInternal(const QString &state, bool = false); - bool updateAutoState(); -}; - -/*! - \qmlclass StateGroup QDeclarativeStateGroup - \inqmlmodule QtQuick 2 - \ingroup qml-state-elements - \brief The StateGroup element provides state support for non-Item elements. - - Item (and all derived elements) provides built in support for states and transitions - via its \l{Item::state}{state}, \l{Item::states}{states} and \l{Item::transitions}{transitions} properties. StateGroup provides an easy way to - use this support in other (non-Item-derived) elements. - - \qml - MyCustomObject { - StateGroup { - id: myStateGroup - states: State { - name: "state1" - // ... - } - transitions: Transition { - // ... - } - } - - onSomethingHappened: myStateGroup.state = "state1"; - } - \endqml - - \sa {qmlstate}{States} {QML Animation and Transitions}{Transitions}, {QtDeclarative} -*/ - -QDeclarativeStateGroup::QDeclarativeStateGroup(QObject *parent) - : QObject(*(new QDeclarativeStateGroupPrivate), parent) -{ -} - -QDeclarativeStateGroup::~QDeclarativeStateGroup() -{ - Q_D(const QDeclarativeStateGroup); - for (int i = 0; i < d->states.count(); ++i) - d->states.at(i)->setStateGroup(0); -} - -QList<QDeclarativeState *> QDeclarativeStateGroup::states() const -{ - Q_D(const QDeclarativeStateGroup); - return d->states; -} - -/*! - \qmlproperty list<State> QtQuick2::StateGroup::states - This property holds a list of states defined by the state group. - - \qml - StateGroup { - states: [ - State { - // State definition... - }, - State { - // ... - } - // Other states... - ] - } - \endqml - - \sa {qmlstate}{States} -*/ -QDeclarativeListProperty<QDeclarativeState> QDeclarativeStateGroup::statesProperty() -{ - Q_D(QDeclarativeStateGroup); - return QDeclarativeListProperty<QDeclarativeState>(this, &d->states, &QDeclarativeStateGroupPrivate::append_state, - &QDeclarativeStateGroupPrivate::count_state, - &QDeclarativeStateGroupPrivate::at_state, - &QDeclarativeStateGroupPrivate::clear_states); -} - -void QDeclarativeStateGroupPrivate::append_state(QDeclarativeListProperty<QDeclarativeState> *list, QDeclarativeState *state) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - if (state) { - _this->d_func()->states.append(state); - state->setStateGroup(_this); - } - -} - -int QDeclarativeStateGroupPrivate::count_state(QDeclarativeListProperty<QDeclarativeState> *list) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - return _this->d_func()->states.count(); -} - -QDeclarativeState *QDeclarativeStateGroupPrivate::at_state(QDeclarativeListProperty<QDeclarativeState> *list, int index) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - return _this->d_func()->states.at(index); -} - -void QDeclarativeStateGroupPrivate::clear_states(QDeclarativeListProperty<QDeclarativeState> *list) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - _this->d_func()->setCurrentStateInternal(QString(), true); - for (int i = 0; i < _this->d_func()->states.count(); ++i) { - _this->d_func()->states.at(i)->setStateGroup(0); - } - _this->d_func()->states.clear(); -} - -/*! - \qmlproperty list<Transition> QtQuick2::StateGroup::transitions - This property holds a list of transitions defined by the state group. - - \qml - StateGroup { - transitions: [ - Transition { - // ... - }, - Transition { - // ... - } - // ... - ] - } - \endqml - - \sa {QML Animation and Transitions}{Transitions} -*/ -QDeclarativeListProperty<QDeclarativeTransition> QDeclarativeStateGroup::transitionsProperty() -{ - Q_D(QDeclarativeStateGroup); - return QDeclarativeListProperty<QDeclarativeTransition>(this, &d->transitions, &QDeclarativeStateGroupPrivate::append_transition, - &QDeclarativeStateGroupPrivate::count_transitions, - &QDeclarativeStateGroupPrivate::at_transition, - &QDeclarativeStateGroupPrivate::clear_transitions); -} - -void QDeclarativeStateGroupPrivate::append_transition(QDeclarativeListProperty<QDeclarativeTransition> *list, QDeclarativeTransition *trans) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - if (trans) - _this->d_func()->transitions.append(trans); -} - -int QDeclarativeStateGroupPrivate::count_transitions(QDeclarativeListProperty<QDeclarativeTransition> *list) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - return _this->d_func()->transitions.count(); -} - -QDeclarativeTransition *QDeclarativeStateGroupPrivate::at_transition(QDeclarativeListProperty<QDeclarativeTransition> *list, int index) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - return _this->d_func()->transitions.at(index); -} - -void QDeclarativeStateGroupPrivate::clear_transitions(QDeclarativeListProperty<QDeclarativeTransition> *list) -{ - QDeclarativeStateGroup *_this = static_cast<QDeclarativeStateGroup *>(list->object); - _this->d_func()->transitions.clear(); -} - -/*! - \qmlproperty string QtQuick2::StateGroup::state - - This property holds the name of the current state of the state group. - - This property is often used in scripts to change between states. For - example: - - \js - function toggle() { - if (button.state == 'On') - button.state = 'Off'; - else - button.state = 'On'; - } - \endjs - - If the state group is in its base state (i.e. no explicit state has been - set), \c state will be a blank string. Likewise, you can return a - state group to its base state by setting its current state to \c ''. - - \sa {qmlstates}{States} -*/ -QString QDeclarativeStateGroup::state() const -{ - Q_D(const QDeclarativeStateGroup); - return d->currentState; -} - -void QDeclarativeStateGroup::setState(const QString &state) -{ - Q_D(QDeclarativeStateGroup); - if (d->currentState == state) - return; - - d->setCurrentStateInternal(state); -} - -void QDeclarativeStateGroup::classBegin() -{ - Q_D(QDeclarativeStateGroup); - d->componentComplete = false; -} - -void QDeclarativeStateGroup::componentComplete() -{ - Q_D(QDeclarativeStateGroup); - d->componentComplete = true; - - for (int ii = 0; ii < d->states.count(); ++ii) { - QDeclarativeState *state = d->states.at(ii); - if (!state->isNamed()) - state->setName(QLatin1String("anonymousState") % QString::number(++d->unnamedCount)); - } - - if (d->updateAutoState()) { - return; - } else if (!d->currentState.isEmpty()) { - QString cs = d->currentState; - d->currentState.clear(); - d->setCurrentStateInternal(cs, true); - } -} - -/*! - Returns true if the state was changed, otherwise false. -*/ -bool QDeclarativeStateGroup::updateAutoState() -{ - Q_D(QDeclarativeStateGroup); - return d->updateAutoState(); -} - -bool QDeclarativeStateGroupPrivate::updateAutoState() -{ - Q_Q(QDeclarativeStateGroup); - if (!componentComplete) - return false; - - bool revert = false; - for (int ii = 0; ii < states.count(); ++ii) { - QDeclarativeState *state = states.at(ii); - if (state->isWhenKnown()) { - if (state->isNamed()) { - if (state->when() && state->when()->evaluate().toBool()) { - if (stateChangeDebug()) - qWarning() << "Setting auto state due to:" - << state->when()->expression(); - if (currentState != state->name()) { - q->setState(state->name()); - return true; - } else { - return false; - } - } else if (state->name() == currentState) { - revert = true; - } - } - } - } - if (revert) { - bool rv = !currentState.isEmpty(); - q->setState(QString()); - return rv; - } else { - return false; - } -} - -QDeclarativeTransition *QDeclarativeStateGroupPrivate::findTransition(const QString &from, const QString &to) -{ - QDeclarativeTransition *highest = 0; - int score = 0; - bool reversed = false; - bool done = false; - - for (int ii = 0; !done && ii < transitions.count(); ++ii) { - QDeclarativeTransition *t = transitions.at(ii); - if (!t->enabled()) - continue; - for (int ii = 0; ii < 2; ++ii) - { - if (ii && (!t->reversible() || - (t->fromState() == QLatin1String("*") && - t->toState() == QLatin1String("*")))) - break; - QStringList fromState; - QStringList toState; - - fromState = t->fromState().split(QLatin1Char(',')); - for (int jj = 0; jj < fromState.count(); ++jj) - fromState[jj] = fromState.at(jj).trimmed(); - toState = t->toState().split(QLatin1Char(',')); - for (int jj = 0; jj < toState.count(); ++jj) - toState[jj] = toState.at(jj).trimmed(); - if (ii == 1) - qSwap(fromState, toState); - int tScore = 0; - if (fromState.contains(from)) - tScore += 2; - else if (fromState.contains(QLatin1String("*"))) - tScore += 1; - else - continue; - - if (toState.contains(to)) - tScore += 2; - else if (toState.contains(QLatin1String("*"))) - tScore += 1; - else - continue; - - if (ii == 1) - reversed = true; - else - reversed = false; - - if (tScore == 4) { - highest = t; - done = true; - break; - } else if (tScore > score) { - score = tScore; - highest = t; - } - } - } - - if (highest) - highest->setReversed(reversed); - - return highest; -} - -void QDeclarativeStateGroupPrivate::setCurrentStateInternal(const QString &state, - bool ignoreTrans) -{ - Q_Q(QDeclarativeStateGroup); - if (!componentComplete) { - currentState = state; - return; - } - - if (applyingState) { - qmlInfo(q) << "Can't apply a state change as part of a state definition."; - return; - } - - applyingState = true; - - QDeclarativeTransition *transition = ignoreTrans ? 0 : findTransition(currentState, state); - if (stateChangeDebug()) { - qWarning() << this << "Changing state. From" << currentState << ". To" << state; - if (transition) - qWarning() << " using transition" << transition->fromState() - << transition->toState(); - } - - QDeclarativeState *oldState = 0; - if (!currentState.isEmpty()) { - for (int ii = 0; ii < states.count(); ++ii) { - if (states.at(ii)->name() == currentState) { - oldState = states.at(ii); - break; - } - } - } - - currentState = state; - emit q->stateChanged(currentState); - - QDeclarativeState *newState = 0; - for (int ii = 0; ii < states.count(); ++ii) { - if (states.at(ii)->name() == currentState) { - newState = states.at(ii); - break; - } - } - - if (oldState == 0 || newState == 0) { - if (!nullState) { - nullState = new QDeclarativeState; - QDeclarative_setParent_noEvent(nullState, q); - nullState->setStateGroup(q); - } - if (!oldState) oldState = nullState; - if (!newState) newState = nullState; - } - - newState->apply(transition, oldState); - applyingState = false; //### consider removing this (don't allow state changes in transition) -} - -QDeclarativeState *QDeclarativeStateGroup::findState(const QString &name) const -{ - Q_D(const QDeclarativeStateGroup); - for (int i = 0; i < d->states.count(); ++i) { - QDeclarativeState *state = d->states.at(i); - if (state->name() == name) - return state; - } - - return 0; -} - -void QDeclarativeStateGroup::removeState(QDeclarativeState *state) -{ - Q_D(QDeclarativeStateGroup); - d->states.removeOne(state); -} - -void QDeclarativeStateGroup::stateAboutToComplete() -{ - Q_D(QDeclarativeStateGroup); - d->applyingState = false; -} - -QT_END_NAMESPACE - - |