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Diffstat (limited to 'src/quick/items/qquickpositioners_p_p.h')
| -rw-r--r-- | src/quick/items/qquickpositioners_p_p.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/quick/items/qquickpositioners_p_p.h b/src/quick/items/qquickpositioners_p_p.h new file mode 100644 index 0000000000..e7a5f8b473 --- /dev/null +++ b/src/quick/items/qquickpositioners_p_p.h @@ -0,0 +1,164 @@ +// Commit: 2c7cab4172f1acc86fd49345a2847417e162f2c3 +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQUICKPOSITIONERS_P_P_H +#define QQUICKPOSITIONERS_P_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "qquickpositioners_p.h" +#include "qquickimplicitsizeitem_p_p.h" + +#include <QtQuick/private/qdeclarativestate_p.h> +#include <private/qdeclarativetransitionmanager_p_p.h> +#include <private/qdeclarativestateoperations_p.h> + +#include <QtCore/qobject.h> +#include <QtCore/qstring.h> +#include <QtCore/qtimer.h> + +QT_BEGIN_NAMESPACE + +class QQuickBasePositionerPrivate : public QQuickImplicitSizeItemPrivate, public QQuickItemChangeListener +{ + Q_DECLARE_PUBLIC(QQuickBasePositioner) + +public: + QQuickBasePositionerPrivate() + : spacing(0), type(QQuickBasePositioner::None) + , moveTransition(0), addTransition(0), positioningDirty(false) + , doingPositioning(false), anchorConflict(false), layoutDirection(Qt::LeftToRight) + { + } + + void init(QQuickBasePositioner::PositionerType at) + { + type = at; + childrenDoNotOverlap = true; + } + + int spacing; + + QQuickBasePositioner::PositionerType type; + QDeclarativeTransition *moveTransition; + QDeclarativeTransition *addTransition; + QDeclarativeStateOperation::ActionList addActions; + QDeclarativeStateOperation::ActionList moveActions; + QDeclarativeTransitionManager addTransitionManager; + QDeclarativeTransitionManager moveTransitionManager; + + void watchChanges(QQuickItem *other); + void unwatchChanges(QQuickItem* other); + void setPositioningDirty() { + Q_Q(QQuickBasePositioner); + if (!positioningDirty) { + positioningDirty = true; + q->polish(); + } + } + + bool positioningDirty : 1; + bool doingPositioning : 1; + bool anchorConflict : 1; + + Qt::LayoutDirection layoutDirection; + + void mirrorChange() { + if (type != QQuickBasePositioner::Vertical) + setPositioningDirty(); + } + bool isLeftToRight() const { + if (type == QQuickBasePositioner::Vertical) + return true; + else + return effectiveLayoutMirror ? layoutDirection == Qt::RightToLeft : layoutDirection == Qt::LeftToRight; + } + + virtual void itemSiblingOrderChanged(QQuickItem* other) + { + Q_UNUSED(other); + setPositioningDirty(); + } + + void itemGeometryChanged(QQuickItem *, const QRectF &newGeometry, const QRectF &oldGeometry) + { + if (newGeometry.size() != oldGeometry.size()) + setPositioningDirty(); + } + + virtual void itemVisibilityChanged(QQuickItem *) + { + setPositioningDirty(); + } + + void itemDestroyed(QQuickItem *item) + { + Q_Q(QQuickBasePositioner); + q->positionedItems.removeOne(QQuickBasePositioner::PositionedItem(item)); + } + + static Qt::LayoutDirection getLayoutDirection(const QQuickBasePositioner *positioner) + { + return positioner->d_func()->layoutDirection; + } + + static Qt::LayoutDirection getEffectiveLayoutDirection(const QQuickBasePositioner *positioner) + { + if (positioner->d_func()->effectiveLayoutMirror) + return positioner->d_func()->layoutDirection == Qt::RightToLeft ? Qt::LeftToRight : Qt::RightToLeft; + else + return positioner->d_func()->layoutDirection; + } +}; + +QT_END_NAMESPACE + +#endif // QQUICKPOSITIONERS_P_P_H |