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Diffstat (limited to 'src/declarative/util/qdeclarativestateoperations.cpp')
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diff --git a/src/declarative/util/qdeclarativestateoperations.cpp b/src/declarative/util/qdeclarativestateoperations.cpp new file mode 100644 index 00000000..30c5730d --- /dev/null +++ b/src/declarative/util/qdeclarativestateoperations.cpp @@ -0,0 +1,1587 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 "private/qdeclarativestateoperations_p.h" + +#include <qdeclarative.h> +#include <qdeclarativecontext.h> +#include <qdeclarativeexpression.h> +#include <qdeclarativeinfo.h> +#include <qdeclarativeanchors_p_p.h> +#include <qdeclarativeitem_p.h> +#include <qdeclarativeguard_p.h> +#include <qdeclarativenullablevalue_p_p.h> +#include "private/qdeclarativecontext_p.h" +#include "private/qdeclarativeproperty_p.h" +#include "private/qdeclarativebinding_p.h" +#include "private/qdeclarativestate_p_p.h" + +#include <QtCore/qdebug.h> +#include <QtGui/qgraphicsitem.h> +#include <QtCore/qmath.h> + +#include <private/qobject_p.h> + +QT_BEGIN_NAMESPACE + +class QDeclarativeParentChangePrivate : public QDeclarativeStateOperationPrivate +{ + Q_DECLARE_PUBLIC(QDeclarativeParentChange) +public: + QDeclarativeParentChangePrivate() : target(0), parent(0), origParent(0), origStackBefore(0), + rewindParent(0), rewindStackBefore(0) {} + + QDeclarativeItem *target; + QDeclarativeGuard<QDeclarativeItem> parent; + QDeclarativeGuard<QDeclarativeItem> origParent; + QDeclarativeGuard<QDeclarativeItem> origStackBefore; + QDeclarativeItem *rewindParent; + QDeclarativeItem *rewindStackBefore; + + QDeclarativeNullableValue<QDeclarativeScriptString> xString; + QDeclarativeNullableValue<QDeclarativeScriptString> yString; + QDeclarativeNullableValue<QDeclarativeScriptString> widthString; + QDeclarativeNullableValue<QDeclarativeScriptString> heightString; + QDeclarativeNullableValue<QDeclarativeScriptString> scaleString; + QDeclarativeNullableValue<QDeclarativeScriptString> rotationString; + + QDeclarativeNullableValue<qreal> x; + QDeclarativeNullableValue<qreal> y; + QDeclarativeNullableValue<qreal> width; + QDeclarativeNullableValue<qreal> height; + QDeclarativeNullableValue<qreal> scale; + QDeclarativeNullableValue<qreal> rotation; + + void doChange(QDeclarativeItem *targetParent, QDeclarativeItem *stackBefore = 0); +}; + +void QDeclarativeParentChangePrivate::doChange(QDeclarativeItem *targetParent, QDeclarativeItem *stackBefore) +{ + if (targetParent && target && target->parentItem()) { + Q_Q(QDeclarativeParentChange); + bool ok; + const QTransform &transform = target->parentItem()->itemTransform(targetParent, &ok); + if (transform.type() >= QTransform::TxShear || !ok) { + qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under complex transform"); + ok = false; + } + + qreal scale = 1; + qreal rotation = 0; + bool isRotate = (transform.type() == QTransform::TxRotate) || (transform.m11() < 0); + if (ok && !isRotate) { + if (transform.m11() == transform.m22()) + scale = transform.m11(); + else { + qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under non-uniform scale"); + ok = false; + } + } else if (ok && isRotate) { + if (transform.m11() == transform.m22()) + scale = qSqrt(transform.m11()*transform.m11() + transform.m12()*transform.m12()); + else { + qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under non-uniform scale"); + ok = false; + } + + if (scale != 0) + rotation = atan2(transform.m12()/scale, transform.m11()/scale) * 180/qreal(M_PI); + else { + qmlInfo(q) << QDeclarativeParentChange::tr("Unable to preserve appearance under scale of 0"); + ok = false; + } + } + + const QPointF &point = transform.map(QPointF(target->x(),target->y())); + qreal x = point.x(); + qreal y = point.y(); + + // setParentItem will update the transformOriginPoint if needed + target->setParentItem(targetParent); + + if (ok && target->transformOrigin() != QDeclarativeItem::TopLeft) { + qreal tempxt = target->transformOriginPoint().x(); + qreal tempyt = target->transformOriginPoint().y(); + QTransform t; + t.translate(-tempxt, -tempyt); + t.rotate(rotation); + t.scale(scale, scale); + t.translate(tempxt, tempyt); + const QPointF &offset = t.map(QPointF(0,0)); + x += offset.x(); + y += offset.y(); + } + + if (ok) { + //qDebug() << x << y << rotation << scale; + target->setX(x); + target->setY(y); + target->setRotation(target->rotation() + rotation); + target->setScale(target->scale() * scale); + } + } else if (target) { + target->setParentItem(targetParent); + } + + //restore the original stack position. + //### if stackBefore has also been reparented this won't work + if (stackBefore) + target->stackBefore(stackBefore); +} + +/*! + \preliminary + \qmlclass ParentChange QDeclarativeParentChange + \ingroup qml-state-elements + \brief The ParentChange element allows you to reparent an Item in a state change. + + ParentChange reparents an item while preserving its visual appearance (position, size, + rotation, and scale) on screen. You can then specify a transition to move/resize/rotate/scale + the item to its final intended appearance. + + ParentChange can only preserve visual appearance if no complex transforms are involved. + More specifically, it will not work if the transform property has been set for any + items involved in the reparenting (i.e. items in the common ancestor tree + for the original and new parent). + + The example below displays a large red rectangle and a small blue rectangle, side by side. + When the \c blueRect is clicked, it changes to the "reparented" state: its parent is changed to \c redRect and it is + positioned at (10, 10) within the red rectangle, as specified in the ParentChange. + + \snippet doc/src/snippets/declarative/parentchange.qml 0 + + \image parentchange.png + + You can specify at which point in a transition you want a ParentChange to occur by + using a ParentAnimation. +*/ + + +QDeclarativeParentChange::QDeclarativeParentChange(QObject *parent) + : QDeclarativeStateOperation(*(new QDeclarativeParentChangePrivate), parent) +{ +} + +QDeclarativeParentChange::~QDeclarativeParentChange() +{ +} + +/*! + \qmlproperty real ParentChange::x + \qmlproperty real ParentChange::y + \qmlproperty real ParentChange::width + \qmlproperty real ParentChange::height + \qmlproperty real ParentChange::scale + \qmlproperty real ParentChange::rotation + These properties hold the new position, size, scale, and rotation + for the item in this state. +*/ +QDeclarativeScriptString QDeclarativeParentChange::x() const +{ + Q_D(const QDeclarativeParentChange); + return d->xString.value; +} + +void tryReal(QDeclarativeNullableValue<qreal> &value, const QString &string) +{ + bool ok = false; + qreal realValue = string.toFloat(&ok); + if (ok) + value = realValue; + else + value.invalidate(); +} + +void QDeclarativeParentChange::setX(QDeclarativeScriptString x) +{ + Q_D(QDeclarativeParentChange); + d->xString = x; + tryReal(d->x, x.script()); +} + +bool QDeclarativeParentChange::xIsSet() const +{ + Q_D(const QDeclarativeParentChange); + return d->xString.isValid(); +} + +QDeclarativeScriptString QDeclarativeParentChange::y() const +{ + Q_D(const QDeclarativeParentChange); + return d->yString.value; +} + +void QDeclarativeParentChange::setY(QDeclarativeScriptString y) +{ + Q_D(QDeclarativeParentChange); + d->yString = y; + tryReal(d->y, y.script()); +} + +bool QDeclarativeParentChange::yIsSet() const +{ + Q_D(const QDeclarativeParentChange); + return d->yString.isValid(); +} + +QDeclarativeScriptString QDeclarativeParentChange::width() const +{ + Q_D(const QDeclarativeParentChange); + return d->widthString.value; +} + +void QDeclarativeParentChange::setWidth(QDeclarativeScriptString width) +{ + Q_D(QDeclarativeParentChange); + d->widthString = width; + tryReal(d->width, width.script()); +} + +bool QDeclarativeParentChange::widthIsSet() const +{ + Q_D(const QDeclarativeParentChange); + return d->widthString.isValid(); +} + +QDeclarativeScriptString QDeclarativeParentChange::height() const +{ + Q_D(const QDeclarativeParentChange); + return d->heightString.value; +} + +void QDeclarativeParentChange::setHeight(QDeclarativeScriptString height) +{ + Q_D(QDeclarativeParentChange); + d->heightString = height; + tryReal(d->height, height.script()); +} + +bool QDeclarativeParentChange::heightIsSet() const +{ + Q_D(const QDeclarativeParentChange); + return d->heightString.isValid(); +} + +QDeclarativeScriptString QDeclarativeParentChange::scale() const +{ + Q_D(const QDeclarativeParentChange); + return d->scaleString.value; +} + +void QDeclarativeParentChange::setScale(QDeclarativeScriptString scale) +{ + Q_D(QDeclarativeParentChange); + d->scaleString = scale; + tryReal(d->scale, scale.script()); +} + +bool QDeclarativeParentChange::scaleIsSet() const +{ + Q_D(const QDeclarativeParentChange); + return d->scaleString.isValid(); +} + +QDeclarativeScriptString QDeclarativeParentChange::rotation() const +{ + Q_D(const QDeclarativeParentChange); + return d->rotationString.value; +} + +void QDeclarativeParentChange::setRotation(QDeclarativeScriptString rotation) +{ + Q_D(QDeclarativeParentChange); + d->rotationString = rotation; + tryReal(d->rotation, rotation.script()); +} + +bool QDeclarativeParentChange::rotationIsSet() const +{ + Q_D(const QDeclarativeParentChange); + return d->rotationString.isValid(); +} + +QDeclarativeItem *QDeclarativeParentChange::originalParent() const +{ + Q_D(const QDeclarativeParentChange); + return d->origParent; +} + +/*! + \qmlproperty Item ParentChange::target + This property holds the item to be reparented +*/ + +QDeclarativeItem *QDeclarativeParentChange::object() const +{ + Q_D(const QDeclarativeParentChange); + return d->target; +} + +void QDeclarativeParentChange::setObject(QDeclarativeItem *target) +{ + Q_D(QDeclarativeParentChange); + d->target = target; +} + +/*! + \qmlproperty Item ParentChange::parent + This property holds the new parent for the item in this state. +*/ + +QDeclarativeItem *QDeclarativeParentChange::parent() const +{ + Q_D(const QDeclarativeParentChange); + return d->parent; +} + +void QDeclarativeParentChange::setParent(QDeclarativeItem *parent) +{ + Q_D(QDeclarativeParentChange); + d->parent = parent; +} + +QDeclarativeStateOperation::ActionList QDeclarativeParentChange::actions() +{ + Q_D(QDeclarativeParentChange); + if (!d->target || !d->parent) + return ActionList(); + + ActionList actions; + + QDeclarativeAction a; + a.event = this; + actions << a; + + QDeclarativeContext *ctxt = qmlContext(this); + + if (d->xString.isValid()) { + if (d->x.isValid()) { + QDeclarativeAction xa(d->target, QLatin1String("x"), ctxt, d->x.value); + actions << xa; + } else { + QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->xString.value.script(), d->target, ctxt); + newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("x"), ctxt)); + QDeclarativeAction xa; + xa.property = newBinding->property(); + xa.toBinding = newBinding; + xa.fromValue = xa.property.read(); + xa.deletableToBinding = true; + actions << xa; + } + } + + if (d->yString.isValid()) { + if (d->y.isValid()) { + QDeclarativeAction ya(d->target, QLatin1String("y"), ctxt, d->y.value); + actions << ya; + } else { + QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->yString.value.script(), d->target, ctxt); + newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("y"), ctxt)); + QDeclarativeAction ya; + ya.property = newBinding->property(); + ya.toBinding = newBinding; + ya.fromValue = ya.property.read(); + ya.deletableToBinding = true; + actions << ya; + } + } + + if (d->scaleString.isValid()) { + if (d->scale.isValid()) { + QDeclarativeAction sa(d->target, QLatin1String("scale"), ctxt, d->scale.value); + actions << sa; + } else { + QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->scaleString.value.script(), d->target, ctxt); + newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("scale"), ctxt)); + QDeclarativeAction sa; + sa.property = newBinding->property(); + sa.toBinding = newBinding; + sa.fromValue = sa.property.read(); + sa.deletableToBinding = true; + actions << sa; + } + } + + if (d->rotationString.isValid()) { + if (d->rotation.isValid()) { + QDeclarativeAction ra(d->target, QLatin1String("rotation"), ctxt, d->rotation.value); + actions << ra; + } else { + QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->rotationString.value.script(), d->target, ctxt); + newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("rotation"), ctxt)); + QDeclarativeAction ra; + ra.property = newBinding->property(); + ra.toBinding = newBinding; + ra.fromValue = ra.property.read(); + ra.deletableToBinding = true; + actions << ra; + } + } + + if (d->widthString.isValid()) { + if (d->width.isValid()) { + QDeclarativeAction wa(d->target, QLatin1String("width"), ctxt, d->width.value); + actions << wa; + } else { + QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->widthString.value.script(), d->target, ctxt); + newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("width"), ctxt)); + QDeclarativeAction wa; + wa.property = newBinding->property(); + wa.toBinding = newBinding; + wa.fromValue = wa.property.read(); + wa.deletableToBinding = true; + actions << wa; + } + } + + if (d->heightString.isValid()) { + if (d->height.isValid()) { + QDeclarativeAction ha(d->target, QLatin1String("height"), ctxt, d->height.value); + actions << ha; + } else { + QDeclarativeBinding *newBinding = new QDeclarativeBinding(d->heightString.value.script(), d->target, ctxt); + newBinding->setTarget(QDeclarativeProperty(d->target, QLatin1String("height"), ctxt)); + QDeclarativeAction ha; + ha.property = newBinding->property(); + ha.toBinding = newBinding; + ha.fromValue = ha.property.read(); + ha.deletableToBinding = true; + actions << ha; + } + } + + return actions; +} + +class AccessibleFxItem : public QDeclarativeItem +{ + Q_OBJECT + Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeItem) +public: + int siblingIndex() { + Q_D(QDeclarativeItem); + return d->siblingIndex; + } +}; + +void QDeclarativeParentChange::saveOriginals() +{ + Q_D(QDeclarativeParentChange); + saveCurrentValues(); + d->origParent = d->rewindParent; + d->origStackBefore = d->rewindStackBefore; +} + +/*void QDeclarativeParentChange::copyOriginals(QDeclarativeActionEvent *other) +{ + Q_D(QDeclarativeParentChange); + QDeclarativeParentChange *pc = static_cast<QDeclarativeParentChange*>(other); + + d->origParent = pc->d_func()->rewindParent; + d->origStackBefore = pc->d_func()->rewindStackBefore; + + saveCurrentValues(); +}*/ + +void QDeclarativeParentChange::execute(Reason) +{ + Q_D(QDeclarativeParentChange); + d->doChange(d->parent); +} + +bool QDeclarativeParentChange::isReversable() +{ + return true; +} + +void QDeclarativeParentChange::reverse(Reason) +{ + Q_D(QDeclarativeParentChange); + d->doChange(d->origParent, d->origStackBefore); +} + +QString QDeclarativeParentChange::typeName() const +{ + return QLatin1String("ParentChange"); +} + +bool QDeclarativeParentChange::override(QDeclarativeActionEvent*other) +{ + Q_D(QDeclarativeParentChange); + if (other->typeName() != QLatin1String("ParentChange")) + return false; + if (QDeclarativeParentChange *otherPC = static_cast<QDeclarativeParentChange*>(other)) + return (d->target == otherPC->object()); + return false; +} + +void QDeclarativeParentChange::saveCurrentValues() +{ + Q_D(QDeclarativeParentChange); + if (!d->target) { + d->rewindParent = 0; + d->rewindStackBefore = 0; + return; + } + + d->rewindParent = d->target->parentItem(); + d->rewindStackBefore = 0; + + if (!d->rewindParent) + return; + + //try to determine the item's original stack position so we can restore it + int siblingIndex = ((AccessibleFxItem*)d->target)->siblingIndex() + 1; + QList<QGraphicsItem*> children = d->rewindParent->childItems(); + for (int i = 0; i < children.count(); ++i) { + QDeclarativeItem *child = qobject_cast<QDeclarativeItem*>(children.at(i)); + if (!child) + continue; + if (((AccessibleFxItem*)child)->siblingIndex() == siblingIndex) { + d->rewindStackBefore = child; + break; + } + } +} + +void QDeclarativeParentChange::rewind() +{ + Q_D(QDeclarativeParentChange); + d->doChange(d->rewindParent, d->rewindStackBefore); +} + +class QDeclarativeStateChangeScriptPrivate : public QDeclarativeStateOperationPrivate +{ +public: + QDeclarativeStateChangeScriptPrivate() {} + + QDeclarativeScriptString script; + QString name; +}; + +/*! + \qmlclass StateChangeScript QDeclarativeStateChangeScript + \ingroup qml-state-elements + \brief The StateChangeScript element allows you to run a script in a state. + + A StateChangeScript is run upon entering a state. You can optionally use + ScriptAction to specify the point in the transition at which + the StateChangeScript should to be run. + + \snippet snippets/declarative/states/statechangescript.qml state and transition + + \sa ScriptAction +*/ + +QDeclarativeStateChangeScript::QDeclarativeStateChangeScript(QObject *parent) +: QDeclarativeStateOperation(*(new QDeclarativeStateChangeScriptPrivate), parent) +{ +} + +QDeclarativeStateChangeScript::~QDeclarativeStateChangeScript() +{ +} + +/*! + \qmlproperty script StateChangeScript::script + This property holds the script to run when the state is current. +*/ +QDeclarativeScriptString QDeclarativeStateChangeScript::script() const +{ + Q_D(const QDeclarativeStateChangeScript); + return d->script; +} + +void QDeclarativeStateChangeScript::setScript(const QDeclarativeScriptString &s) +{ + Q_D(QDeclarativeStateChangeScript); + d->script = s; +} + +/*! + \qmlproperty string StateChangeScript::name + This property holds the name of the script. This name can be used by a + ScriptAction to target a specific script. + + \sa ScriptAction::scriptName +*/ +QString QDeclarativeStateChangeScript::name() const +{ + Q_D(const QDeclarativeStateChangeScript); + return d->name; +} + +void QDeclarativeStateChangeScript::setName(const QString &n) +{ + Q_D(QDeclarativeStateChangeScript); + d->name = n; +} + +void QDeclarativeStateChangeScript::execute(Reason) +{ + Q_D(QDeclarativeStateChangeScript); + const QString &script = d->script.script(); + if (!script.isEmpty()) { + QDeclarativeExpression expr(d->script.context(), d->script.scopeObject(), script); + QDeclarativeData *ddata = QDeclarativeData::get(this); + if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty()) + expr.setSourceLocation(ddata->outerContext->url.toString(), ddata->lineNumber); + expr.evaluate(); + if (expr.hasError()) + qmlInfo(this, expr.error()); + } +} + +QDeclarativeStateChangeScript::ActionList QDeclarativeStateChangeScript::actions() +{ + ActionList rv; + QDeclarativeAction a; + a.event = this; + rv << a; + return rv; +} + +QString QDeclarativeStateChangeScript::typeName() const +{ + return QLatin1String("StateChangeScript"); +} + +/*! + \qmlclass AnchorChanges QDeclarativeAnchorChanges + \ingroup qml-state-elements + \brief The AnchorChanges element allows you to change the anchors of an item in a state. + + The AnchorChanges element is used to modify the anchors of an item in a \l State. + + AnchorChanges cannot be used to modify the margins on an item. For this, use + PropertyChanges intead. + + In the following example we change the top and bottom anchors of an item + using AnchorChanges, and the top and bottom anchor margins using + PropertyChanges: + + \snippet doc/src/snippets/declarative/anchorchanges.qml 0 + + \image anchorchanges.png + + AnchorChanges can be animated using AnchorAnimation. + \qml + //animate our anchor changes + Transition { + AnchorAnimation {} + } + \endqml + + Margin animations can be animated using NumberAnimation. + + For more information on anchors see \l {anchor-layout}{Anchor Layouts}. +*/ + +class QDeclarativeAnchorSetPrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QDeclarativeAnchorSet) +public: + QDeclarativeAnchorSetPrivate() + : usedAnchors(0), resetAnchors(0), fill(0), + centerIn(0)/*, leftMargin(0), rightMargin(0), topMargin(0), bottomMargin(0), + margins(0), vCenterOffset(0), hCenterOffset(0), baselineOffset(0)*/ + { + } + + QDeclarativeAnchors::Anchors usedAnchors; + QDeclarativeAnchors::Anchors resetAnchors; + + QDeclarativeItem *fill; + QDeclarativeItem *centerIn; + + QDeclarativeScriptString leftScript; + QDeclarativeScriptString rightScript; + QDeclarativeScriptString topScript; + QDeclarativeScriptString bottomScript; + QDeclarativeScriptString hCenterScript; + QDeclarativeScriptString vCenterScript; + QDeclarativeScriptString baselineScript; + + /*qreal leftMargin; + qreal rightMargin; + qreal topMargin; + qreal bottomMargin; + qreal margins; + qreal vCenterOffset; + qreal hCenterOffset; + qreal baselineOffset;*/ +}; + +QDeclarativeAnchorSet::QDeclarativeAnchorSet(QObject *parent) + : QObject(*new QDeclarativeAnchorSetPrivate, parent) +{ +} + +QDeclarativeAnchorSet::~QDeclarativeAnchorSet() +{ +} + +QDeclarativeScriptString QDeclarativeAnchorSet::top() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->topScript; +} + +void QDeclarativeAnchorSet::setTop(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::TopAnchor; + d->topScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetTop(); +} + +void QDeclarativeAnchorSet::resetTop() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::TopAnchor; + d->topScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::TopAnchor; +} + +QDeclarativeScriptString QDeclarativeAnchorSet::bottom() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->bottomScript; +} + +void QDeclarativeAnchorSet::setBottom(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::BottomAnchor; + d->bottomScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetBottom(); +} + +void QDeclarativeAnchorSet::resetBottom() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::BottomAnchor; + d->bottomScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::BottomAnchor; +} + +QDeclarativeScriptString QDeclarativeAnchorSet::verticalCenter() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->vCenterScript; +} + +void QDeclarativeAnchorSet::setVerticalCenter(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::VCenterAnchor; + d->vCenterScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetVerticalCenter(); +} + +void QDeclarativeAnchorSet::resetVerticalCenter() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::VCenterAnchor; + d->vCenterScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::VCenterAnchor; +} + +QDeclarativeScriptString QDeclarativeAnchorSet::baseline() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->baselineScript; +} + +void QDeclarativeAnchorSet::setBaseline(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::BaselineAnchor; + d->baselineScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetBaseline(); +} + +void QDeclarativeAnchorSet::resetBaseline() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::BaselineAnchor; + d->baselineScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::BaselineAnchor; +} + +QDeclarativeScriptString QDeclarativeAnchorSet::left() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->leftScript; +} + +void QDeclarativeAnchorSet::setLeft(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::LeftAnchor; + d->leftScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetLeft(); +} + +void QDeclarativeAnchorSet::resetLeft() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::LeftAnchor; + d->leftScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::LeftAnchor; +} + +QDeclarativeScriptString QDeclarativeAnchorSet::right() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->rightScript; +} + +void QDeclarativeAnchorSet::setRight(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::RightAnchor; + d->rightScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetRight(); +} + +void QDeclarativeAnchorSet::resetRight() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::RightAnchor; + d->rightScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::RightAnchor; +} + +QDeclarativeScriptString QDeclarativeAnchorSet::horizontalCenter() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->hCenterScript; +} + +void QDeclarativeAnchorSet::setHorizontalCenter(const QDeclarativeScriptString &edge) +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors |= QDeclarativeAnchors::HCenterAnchor; + d->hCenterScript = edge; + if (edge.script() == QLatin1String("undefined")) + resetHorizontalCenter(); +} + +void QDeclarativeAnchorSet::resetHorizontalCenter() +{ + Q_D(QDeclarativeAnchorSet); + d->usedAnchors &= ~QDeclarativeAnchors::HCenterAnchor; + d->hCenterScript = QDeclarativeScriptString(); + d->resetAnchors |= QDeclarativeAnchors::HCenterAnchor; +} + +QDeclarativeItem *QDeclarativeAnchorSet::fill() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->fill; +} + +void QDeclarativeAnchorSet::setFill(QDeclarativeItem *f) +{ + Q_D(QDeclarativeAnchorSet); + d->fill = f; +} + +void QDeclarativeAnchorSet::resetFill() +{ + setFill(0); +} + +QDeclarativeItem *QDeclarativeAnchorSet::centerIn() const +{ + Q_D(const QDeclarativeAnchorSet); + return d->centerIn; +} + +void QDeclarativeAnchorSet::setCenterIn(QDeclarativeItem* c) +{ + Q_D(QDeclarativeAnchorSet); + d->centerIn = c; +} + +void QDeclarativeAnchorSet::resetCenterIn() +{ + setCenterIn(0); +} + + +class QDeclarativeAnchorChangesPrivate : public QDeclarativeStateOperationPrivate +{ +public: + QDeclarativeAnchorChangesPrivate() + : target(0), anchorSet(new QDeclarativeAnchorSet), + leftBinding(0), rightBinding(0), hCenterBinding(0), + topBinding(0), bottomBinding(0), vCenterBinding(0), baselineBinding(0), + origLeftBinding(0), origRightBinding(0), origHCenterBinding(0), + origTopBinding(0), origBottomBinding(0), origVCenterBinding(0), + origBaselineBinding(0) + { + + } + ~QDeclarativeAnchorChangesPrivate() { delete anchorSet; } + + QDeclarativeItem *target; + QDeclarativeAnchorSet *anchorSet; + + QDeclarativeBinding *leftBinding; + QDeclarativeBinding *rightBinding; + QDeclarativeBinding *hCenterBinding; + QDeclarativeBinding *topBinding; + QDeclarativeBinding *bottomBinding; + QDeclarativeBinding *vCenterBinding; + QDeclarativeBinding *baselineBinding; + + QDeclarativeAbstractBinding *origLeftBinding; + QDeclarativeAbstractBinding *origRightBinding; + QDeclarativeAbstractBinding *origHCenterBinding; + QDeclarativeAbstractBinding *origTopBinding; + QDeclarativeAbstractBinding *origBottomBinding; + QDeclarativeAbstractBinding *origVCenterBinding; + QDeclarativeAbstractBinding *origBaselineBinding; + + QDeclarativeAnchorLine rewindLeft; + QDeclarativeAnchorLine rewindRight; + QDeclarativeAnchorLine rewindHCenter; + QDeclarativeAnchorLine rewindTop; + QDeclarativeAnchorLine rewindBottom; + QDeclarativeAnchorLine rewindVCenter; + QDeclarativeAnchorLine rewindBaseline; + + qreal fromX; + qreal fromY; + qreal fromWidth; + qreal fromHeight; + + qreal toX; + qreal toY; + qreal toWidth; + qreal toHeight; + + qreal rewindX; + qreal rewindY; + qreal rewindWidth; + qreal rewindHeight; + + bool applyOrigLeft; + bool applyOrigRight; + bool applyOrigHCenter; + bool applyOrigTop; + bool applyOrigBottom; + bool applyOrigVCenter; + bool applyOrigBaseline; + + QDeclarativeNullableValue<qreal> origWidth; + QDeclarativeNullableValue<qreal> origHeight; + qreal origX; + qreal origY; + + QList<QDeclarativeAbstractBinding*> oldBindings; + + QDeclarativeProperty leftProp; + QDeclarativeProperty rightProp; + QDeclarativeProperty hCenterProp; + QDeclarativeProperty topProp; + QDeclarativeProperty bottomProp; + QDeclarativeProperty vCenterProp; + QDeclarativeProperty baselineProp; +}; + +/*! + \qmlproperty Item AnchorChanges::target + This property holds the \l Item for which the anchor changes will be applied. +*/ + +QDeclarativeAnchorChanges::QDeclarativeAnchorChanges(QObject *parent) + : QDeclarativeStateOperation(*(new QDeclarativeAnchorChangesPrivate), parent) +{ +} + +QDeclarativeAnchorChanges::~QDeclarativeAnchorChanges() +{ +} + +QDeclarativeAnchorChanges::ActionList QDeclarativeAnchorChanges::actions() +{ + Q_D(QDeclarativeAnchorChanges); + d->leftBinding = d->rightBinding = d->hCenterBinding = d->topBinding + = d->bottomBinding = d->vCenterBinding = d->baselineBinding = 0; + + d->leftProp = QDeclarativeProperty(d->target, QLatin1String("anchors.left")); + d->rightProp = QDeclarativeProperty(d->target, QLatin1String("anchors.right")); + d->hCenterProp = QDeclarativeProperty(d->target, QLatin1String("anchors.horizontalCenter")); + d->topProp = QDeclarativeProperty(d->target, QLatin1String("anchors.top")); + d->bottomProp = QDeclarativeProperty(d->target, QLatin1String("anchors.bottom")); + d->vCenterProp = QDeclarativeProperty(d->target, QLatin1String("anchors.verticalCenter")); + d->baselineProp = QDeclarativeProperty(d->target, QLatin1String("anchors.baseline")); + + QDeclarativeContext *ctxt = qmlContext(this); + + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::LeftAnchor) { + d->leftBinding = new QDeclarativeBinding(d->anchorSet->d_func()->leftScript.script(), d->target, ctxt); + d->leftBinding->setTarget(d->leftProp); + } + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::RightAnchor) { + d->rightBinding = new QDeclarativeBinding(d->anchorSet->d_func()->rightScript.script(), d->target, ctxt); + d->rightBinding->setTarget(d->rightProp); + } + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::HCenterAnchor) { + d->hCenterBinding = new QDeclarativeBinding(d->anchorSet->d_func()->hCenterScript.script(), d->target, ctxt); + d->hCenterBinding->setTarget(d->hCenterProp); + } + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::TopAnchor) { + d->topBinding = new QDeclarativeBinding(d->anchorSet->d_func()->topScript.script(), d->target, ctxt); + d->topBinding->setTarget(d->topProp); + } + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::BottomAnchor) { + d->bottomBinding = new QDeclarativeBinding(d->anchorSet->d_func()->bottomScript.script(), d->target, ctxt); + d->bottomBinding->setTarget(d->bottomProp); + } + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::VCenterAnchor) { + d->vCenterBinding = new QDeclarativeBinding(d->anchorSet->d_func()->vCenterScript.script(), d->target, ctxt); + d->vCenterBinding->setTarget(d->vCenterProp); + } + if (d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::BaselineAnchor) { + d->baselineBinding = new QDeclarativeBinding(d->anchorSet->d_func()->baselineScript.script(), d->target, ctxt); + d->baselineBinding->setTarget(d->baselineProp); + } + + QDeclarativeAction a; + a.event = this; + return ActionList() << a; +} + +QDeclarativeAnchorSet *QDeclarativeAnchorChanges::anchors() +{ + Q_D(QDeclarativeAnchorChanges); + return d->anchorSet; +} + +QDeclarativeItem *QDeclarativeAnchorChanges::object() const +{ + Q_D(const QDeclarativeAnchorChanges); + return d->target; +} + +void QDeclarativeAnchorChanges::setObject(QDeclarativeItem *target) +{ + Q_D(QDeclarativeAnchorChanges); + d->target = target; +} + +/*! + \qmlproperty AnchorLine AnchorChanges::anchors.left + \qmlproperty AnchorLine AnchorChanges::anchors.right + \qmlproperty AnchorLine AnchorChanges::anchors.horizontalCenter + \qmlproperty AnchorLine AnchorChanges::anchors.top + \qmlproperty AnchorLine AnchorChanges::anchors.bottom + \qmlproperty AnchorLine AnchorChanges::anchors.verticalCenter + \qmlproperty AnchorLine AnchorChanges::anchors.baseline + + These properties change the respective anchors of the item. + + To reset an anchor you can assign \c undefined: + \qml + AnchorChanges { + target: myItem + anchors.left: undefined //remove myItem's left anchor + anchors.right: otherItem.right + } + \endqml +*/ + +void QDeclarativeAnchorChanges::execute(Reason reason) +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + QDeclarativeItemPrivate *targetPrivate = QDeclarativeItemPrivate::get(d->target); + //incorporate any needed "reverts" + if (d->applyOrigLeft) { + if (!d->origLeftBinding) + targetPrivate->anchors()->resetLeft(); + QDeclarativePropertyPrivate::setBinding(d->leftProp, d->origLeftBinding); + } + if (d->applyOrigRight) { + if (!d->origRightBinding) + targetPrivate->anchors()->resetRight(); + QDeclarativePropertyPrivate::setBinding(d->rightProp, d->origRightBinding); + } + if (d->applyOrigHCenter) { + if (!d->origHCenterBinding) + targetPrivate->anchors()->resetHorizontalCenter(); + QDeclarativePropertyPrivate::setBinding(d->hCenterProp, d->origHCenterBinding); + } + if (d->applyOrigTop) { + if (!d->origTopBinding) + targetPrivate->anchors()->resetTop(); + QDeclarativePropertyPrivate::setBinding(d->topProp, d->origTopBinding); + } + if (d->applyOrigBottom) { + if (!d->origBottomBinding) + targetPrivate->anchors()->resetBottom(); + QDeclarativePropertyPrivate::setBinding(d->bottomProp, d->origBottomBinding); + } + if (d->applyOrigVCenter) { + if (!d->origVCenterBinding) + targetPrivate->anchors()->resetVerticalCenter(); + QDeclarativePropertyPrivate::setBinding(d->vCenterProp, d->origVCenterBinding); + } + if (d->applyOrigBaseline) { + if (!d->origBaselineBinding) + targetPrivate->anchors()->resetBaseline(); + QDeclarativePropertyPrivate::setBinding(d->baselineProp, d->origBaselineBinding); + } + + //destroy old bindings + if (reason == ActualChange) { + for (int i = 0; i < d->oldBindings.size(); ++i) { + QDeclarativeAbstractBinding *binding = d->oldBindings.at(i); + if (binding) + binding->destroy(); + } + d->oldBindings.clear(); + } + + //reset any anchors that have been specified as "undefined" + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::LeftAnchor) { + targetPrivate->anchors()->resetLeft(); + QDeclarativePropertyPrivate::setBinding(d->leftProp, 0); + } + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::RightAnchor) { + targetPrivate->anchors()->resetRight(); + QDeclarativePropertyPrivate::setBinding(d->rightProp, 0); + } + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::HCenterAnchor) { + targetPrivate->anchors()->resetHorizontalCenter(); + QDeclarativePropertyPrivate::setBinding(d->hCenterProp, 0); + } + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::TopAnchor) { + targetPrivate->anchors()->resetTop(); + QDeclarativePropertyPrivate::setBinding(d->topProp, 0); + } + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::BottomAnchor) { + targetPrivate->anchors()->resetBottom(); + QDeclarativePropertyPrivate::setBinding(d->bottomProp, 0); + } + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::VCenterAnchor) { + targetPrivate->anchors()->resetVerticalCenter(); + QDeclarativePropertyPrivate::setBinding(d->vCenterProp, 0); + } + if (d->anchorSet->d_func()->resetAnchors & QDeclarativeAnchors::BaselineAnchor) { + targetPrivate->anchors()->resetBaseline(); + QDeclarativePropertyPrivate::setBinding(d->baselineProp, 0); + } + + //set any anchors that have been specified + if (d->leftBinding) + QDeclarativePropertyPrivate::setBinding(d->leftBinding->property(), d->leftBinding); + if (d->rightBinding) + QDeclarativePropertyPrivate::setBinding(d->rightBinding->property(), d->rightBinding); + if (d->hCenterBinding) + QDeclarativePropertyPrivate::setBinding(d->hCenterBinding->property(), d->hCenterBinding); + if (d->topBinding) + QDeclarativePropertyPrivate::setBinding(d->topBinding->property(), d->topBinding); + if (d->bottomBinding) + QDeclarativePropertyPrivate::setBinding(d->bottomBinding->property(), d->bottomBinding); + if (d->vCenterBinding) + QDeclarativePropertyPrivate::setBinding(d->vCenterBinding->property(), d->vCenterBinding); + if (d->baselineBinding) + QDeclarativePropertyPrivate::setBinding(d->baselineBinding->property(), d->baselineBinding); +} + +bool QDeclarativeAnchorChanges::isReversable() +{ + return true; +} + +void QDeclarativeAnchorChanges::reverse(Reason reason) +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + QDeclarativeItemPrivate *targetPrivate = QDeclarativeItemPrivate::get(d->target); + //reset any anchors set by the state + if (d->leftBinding) { + targetPrivate->anchors()->resetLeft(); + QDeclarativePropertyPrivate::setBinding(d->leftBinding->property(), 0); + if (reason == ActualChange) { + d->leftBinding->destroy(); d->leftBinding = 0; + } + } + if (d->rightBinding) { + targetPrivate->anchors()->resetRight(); + QDeclarativePropertyPrivate::setBinding(d->rightBinding->property(), 0); + if (reason == ActualChange) { + d->rightBinding->destroy(); d->rightBinding = 0; + } + } + if (d->hCenterBinding) { + targetPrivate->anchors()->resetHorizontalCenter(); + QDeclarativePropertyPrivate::setBinding(d->hCenterBinding->property(), 0); + if (reason == ActualChange) { + d->hCenterBinding->destroy(); d->hCenterBinding = 0; + } + } + if (d->topBinding) { + targetPrivate->anchors()->resetTop(); + QDeclarativePropertyPrivate::setBinding(d->topBinding->property(), 0); + if (reason == ActualChange) { + d->topBinding->destroy(); d->topBinding = 0; + } + } + if (d->bottomBinding) { + targetPrivate->anchors()->resetBottom(); + QDeclarativePropertyPrivate::setBinding(d->bottomBinding->property(), 0); + if (reason == ActualChange) { + d->bottomBinding->destroy(); d->bottomBinding = 0; + } + } + if (d->vCenterBinding) { + targetPrivate->anchors()->resetVerticalCenter(); + QDeclarativePropertyPrivate::setBinding(d->vCenterBinding->property(), 0); + if (reason == ActualChange) { + d->vCenterBinding->destroy(); d->vCenterBinding = 0; + } + } + if (d->baselineBinding) { + targetPrivate->anchors()->resetBaseline(); + QDeclarativePropertyPrivate::setBinding(d->baselineBinding->property(), 0); + if (reason == ActualChange) { + d->baselineBinding->destroy(); d->baselineBinding = 0; + } + } + + //restore previous anchors + if (d->origLeftBinding) + QDeclarativePropertyPrivate::setBinding(d->leftProp, d->origLeftBinding); + if (d->origRightBinding) + QDeclarativePropertyPrivate::setBinding(d->rightProp, d->origRightBinding); + if (d->origHCenterBinding) + QDeclarativePropertyPrivate::setBinding(d->hCenterProp, d->origHCenterBinding); + if (d->origTopBinding) + QDeclarativePropertyPrivate::setBinding(d->topProp, d->origTopBinding); + if (d->origBottomBinding) + QDeclarativePropertyPrivate::setBinding(d->bottomProp, d->origBottomBinding); + if (d->origVCenterBinding) + QDeclarativePropertyPrivate::setBinding(d->vCenterProp, d->origVCenterBinding); + if (d->origBaselineBinding) + QDeclarativePropertyPrivate::setBinding(d->baselineProp, d->origBaselineBinding); + + //restore any absolute geometry changed by the state's anchors + QDeclarativeAnchors::Anchors stateVAnchors = d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::Vertical_Mask; + QDeclarativeAnchors::Anchors origVAnchors = targetPrivate->anchors()->usedAnchors() & QDeclarativeAnchors::Vertical_Mask; + QDeclarativeAnchors::Anchors stateHAnchors = d->anchorSet->d_func()->usedAnchors & QDeclarativeAnchors::Horizontal_Mask; + QDeclarativeAnchors::Anchors origHAnchors = targetPrivate->anchors()->usedAnchors() & QDeclarativeAnchors::Horizontal_Mask; + + bool stateSetWidth = (stateHAnchors && + stateHAnchors != QDeclarativeAnchors::LeftAnchor && + stateHAnchors != QDeclarativeAnchors::RightAnchor && + stateHAnchors != QDeclarativeAnchors::HCenterAnchor); + bool origSetWidth = (origHAnchors && + origHAnchors != QDeclarativeAnchors::LeftAnchor && + origHAnchors != QDeclarativeAnchors::RightAnchor && + origHAnchors != QDeclarativeAnchors::HCenterAnchor); + if (d->origWidth.isValid() && stateSetWidth && !origSetWidth) + d->target->setWidth(d->origWidth.value); + + bool stateSetHeight = (stateVAnchors && + stateVAnchors != QDeclarativeAnchors::TopAnchor && + stateVAnchors != QDeclarativeAnchors::BottomAnchor && + stateVAnchors != QDeclarativeAnchors::VCenterAnchor && + stateVAnchors != QDeclarativeAnchors::BaselineAnchor); + bool origSetHeight = (origVAnchors && + origVAnchors != QDeclarativeAnchors::TopAnchor && + origVAnchors != QDeclarativeAnchors::BottomAnchor && + origVAnchors != QDeclarativeAnchors::VCenterAnchor && + origVAnchors != QDeclarativeAnchors::BaselineAnchor); + if (d->origHeight.isValid() && stateSetHeight && !origSetHeight) + d->target->setHeight(d->origHeight.value); + + if (stateHAnchors && !origHAnchors) + d->target->setX(d->origX); + + if (stateVAnchors && !origVAnchors) + d->target->setY(d->origY); +} + +QString QDeclarativeAnchorChanges::typeName() const +{ + return QLatin1String("AnchorChanges"); +} + +QList<QDeclarativeAction> QDeclarativeAnchorChanges::additionalActions() +{ + Q_D(QDeclarativeAnchorChanges); + QList<QDeclarativeAction> extra; + + QDeclarativeAnchors::Anchors combined = d->anchorSet->d_func()->usedAnchors | d->anchorSet->d_func()->resetAnchors; + bool hChange = combined & QDeclarativeAnchors::Horizontal_Mask; + bool vChange = combined & QDeclarativeAnchors::Vertical_Mask; + + if (d->target) { + QDeclarativeContext *ctxt = qmlContext(this); + QDeclarativeAction a; + if (hChange && d->fromX != d->toX) { + a.property = QDeclarativeProperty(d->target, QLatin1String("x"), ctxt); + a.toValue = d->toX; + extra << a; + } + if (vChange && d->fromY != d->toY) { + a.property = QDeclarativeProperty(d->target, QLatin1String("y"), ctxt); + a.toValue = d->toY; + extra << a; + } + if (hChange && d->fromWidth != d->toWidth) { + a.property = QDeclarativeProperty(d->target, QLatin1String("width"), ctxt); + a.toValue = d->toWidth; + extra << a; + } + if (vChange && d->fromHeight != d->toHeight) { + a.property = QDeclarativeProperty(d->target, QLatin1String("height"), ctxt); + a.toValue = d->toHeight; + extra << a; + } + } + + return extra; +} + +bool QDeclarativeAnchorChanges::changesBindings() +{ + return true; +} + +void QDeclarativeAnchorChanges::saveOriginals() +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + d->origLeftBinding = QDeclarativePropertyPrivate::binding(d->leftProp); + d->origRightBinding = QDeclarativePropertyPrivate::binding(d->rightProp); + d->origHCenterBinding = QDeclarativePropertyPrivate::binding(d->hCenterProp); + d->origTopBinding = QDeclarativePropertyPrivate::binding(d->topProp); + d->origBottomBinding = QDeclarativePropertyPrivate::binding(d->bottomProp); + d->origVCenterBinding = QDeclarativePropertyPrivate::binding(d->vCenterProp); + d->origBaselineBinding = QDeclarativePropertyPrivate::binding(d->baselineProp); + + QDeclarativeItemPrivate *targetPrivate = QDeclarativeItemPrivate::get(d->target); + if (targetPrivate->widthValid) + d->origWidth = d->target->width(); + if (targetPrivate->heightValid) + d->origHeight = d->target->height(); + d->origX = d->target->x(); + d->origY = d->target->y(); + + d->applyOrigLeft = d->applyOrigRight = d->applyOrigHCenter = d->applyOrigTop + = d->applyOrigBottom = d->applyOrigVCenter = d->applyOrigBaseline = false; + + saveCurrentValues(); +} + +void QDeclarativeAnchorChanges::copyOriginals(QDeclarativeActionEvent *other) +{ + Q_D(QDeclarativeAnchorChanges); + QDeclarativeAnchorChanges *ac = static_cast<QDeclarativeAnchorChanges*>(other); + QDeclarativeAnchorChangesPrivate *acp = ac->d_func(); + + QDeclarativeAnchors::Anchors combined = acp->anchorSet->d_func()->usedAnchors | + acp->anchorSet->d_func()->resetAnchors; + + //probably also need to revert some things + d->applyOrigLeft = (combined & QDeclarativeAnchors::LeftAnchor); + d->applyOrigRight = (combined & QDeclarativeAnchors::RightAnchor); + d->applyOrigHCenter = (combined & QDeclarativeAnchors::HCenterAnchor); + d->applyOrigTop = (combined & QDeclarativeAnchors::TopAnchor); + d->applyOrigBottom = (combined & QDeclarativeAnchors::BottomAnchor); + d->applyOrigVCenter = (combined & QDeclarativeAnchors::VCenterAnchor); + d->applyOrigBaseline = (combined & QDeclarativeAnchors::BaselineAnchor); + + d->origLeftBinding = acp->origLeftBinding; + d->origRightBinding = acp->origRightBinding; + d->origHCenterBinding = acp->origHCenterBinding; + d->origTopBinding = acp->origTopBinding; + d->origBottomBinding = acp->origBottomBinding; + d->origVCenterBinding = acp->origVCenterBinding; + d->origBaselineBinding = acp->origBaselineBinding; + + d->origWidth = acp->origWidth; + d->origHeight = acp->origHeight; + d->origX = acp->origX; + d->origY = acp->origY; + + d->oldBindings.clear(); + d->oldBindings << acp->leftBinding << acp->rightBinding << acp->hCenterBinding + << acp->topBinding << acp->bottomBinding << acp->baselineBinding; + + saveCurrentValues(); +} + +void QDeclarativeAnchorChanges::clearBindings() +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + //### should this (saving "from" values) be moved to saveCurrentValues()? + d->fromX = d->target->x(); + d->fromY = d->target->y(); + d->fromWidth = d->target->width(); + d->fromHeight = d->target->height(); + + QDeclarativeItemPrivate *targetPrivate = QDeclarativeItemPrivate::get(d->target); + //reset any anchors with corresponding reverts + //reset any anchors that have been specified as "undefined" + //reset any anchors that we'll be setting in the state + QDeclarativeAnchors::Anchors combined = d->anchorSet->d_func()->resetAnchors | + d->anchorSet->d_func()->usedAnchors; + if (d->applyOrigLeft || (combined & QDeclarativeAnchors::LeftAnchor)) { + targetPrivate->anchors()->resetLeft(); + QDeclarativePropertyPrivate::setBinding(d->leftProp, 0); + } + if (d->applyOrigRight || (combined & QDeclarativeAnchors::RightAnchor)) { + targetPrivate->anchors()->resetRight(); + QDeclarativePropertyPrivate::setBinding(d->rightProp, 0); + } + if (d->applyOrigHCenter || (combined & QDeclarativeAnchors::HCenterAnchor)) { + targetPrivate->anchors()->resetHorizontalCenter(); + QDeclarativePropertyPrivate::setBinding(d->hCenterProp, 0); + } + if (d->applyOrigTop || (combined & QDeclarativeAnchors::TopAnchor)) { + targetPrivate->anchors()->resetTop(); + QDeclarativePropertyPrivate::setBinding(d->topProp, 0); + } + if (d->applyOrigBottom || (combined & QDeclarativeAnchors::BottomAnchor)) { + targetPrivate->anchors()->resetBottom(); + QDeclarativePropertyPrivate::setBinding(d->bottomProp, 0); + } + if (d->applyOrigVCenter || (combined & QDeclarativeAnchors::VCenterAnchor)) { + targetPrivate->anchors()->resetVerticalCenter(); + QDeclarativePropertyPrivate::setBinding(d->vCenterProp, 0); + } + if (d->applyOrigBaseline || (combined & QDeclarativeAnchors::BaselineAnchor)) { + targetPrivate->anchors()->resetBaseline(); + QDeclarativePropertyPrivate::setBinding(d->baselineProp, 0); + } +} + +bool QDeclarativeAnchorChanges::override(QDeclarativeActionEvent*other) +{ + if (other->typeName() != QLatin1String("AnchorChanges")) + return false; + if (static_cast<QDeclarativeActionEvent*>(this) == other) + return true; + if (static_cast<QDeclarativeAnchorChanges*>(other)->object() == object()) + return true; + return false; +} + +void QDeclarativeAnchorChanges::rewind() +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + QDeclarativeItemPrivate *targetPrivate = QDeclarativeItemPrivate::get(d->target); + + //restore previous values (but not previous bindings, i.e. anchors) + d->target->setX(d->rewindX); + d->target->setY(d->rewindY); + if (targetPrivate->widthValid) { + d->target->setWidth(d->rewindWidth); + } + if (targetPrivate->heightValid) { + d->target->setHeight(d->rewindHeight); + } +} + +void QDeclarativeAnchorChanges::saveCurrentValues() +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + QDeclarativeItemPrivate *targetPrivate = QDeclarativeItemPrivate::get(d->target); + d->rewindLeft = targetPrivate->anchors()->left(); + d->rewindRight = targetPrivate->anchors()->right(); + d->rewindHCenter = targetPrivate->anchors()->horizontalCenter(); + d->rewindTop = targetPrivate->anchors()->top(); + d->rewindBottom = targetPrivate->anchors()->bottom(); + d->rewindVCenter = targetPrivate->anchors()->verticalCenter(); + d->rewindBaseline = targetPrivate->anchors()->baseline(); + + d->rewindX = d->target->x(); + d->rewindY = d->target->y(); + d->rewindWidth = d->target->width(); + d->rewindHeight = d->target->height(); +} + +void QDeclarativeAnchorChanges::saveTargetValues() +{ + Q_D(QDeclarativeAnchorChanges); + if (!d->target) + return; + + d->toX = d->target->x(); + d->toY = d->target->y(); + d->toWidth = d->target->width(); + d->toHeight = d->target->height(); +} + +#include <qdeclarativestateoperations.moc> +#include <moc_qdeclarativestateoperations_p.cpp> + +QT_END_NAMESPACE + |