Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 316 insertions, 0 deletions

diff --git a/src/gui/graphicsview/qgraphicsview.h b/src/gui/graphicsview/qgraphicsview.h
new file mode 100644
index 0000000000..b2a7bdb226
--- /dev/null
+++ b/src/gui/graphicsview/qgraphicsview.h
@@ -0,0 +1,316 @@
+/****************************************************************************
+**
+** 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 QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGRAPHICSVIEW_H
+#define QGRAPHICSVIEW_H
+
+#include <QtCore/qmetatype.h>
+#include <QtGui/qpainter.h>
+#include <QtGui/qscrollarea.h>
+#include <QtGui/qgraphicsscene.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
+
+class QGraphicsItem;
+class QPainterPath;
+class QPolygonF;
+class QStyleOptionGraphicsItem;
+
+class QGraphicsViewPrivate;
+class Q_GUI_EXPORT QGraphicsView : public QAbstractScrollArea
+{
+    Q_OBJECT
+    Q_FLAGS(QPainter::RenderHints CacheMode OptimizationFlags)
+    Q_ENUMS(ViewportAnchor DragMode ViewportUpdateMode)
+    Q_PROPERTY(QBrush backgroundBrush READ backgroundBrush WRITE setBackgroundBrush)
+    Q_PROPERTY(QBrush foregroundBrush READ foregroundBrush WRITE setForegroundBrush)
+    Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive)
+    Q_PROPERTY(QRectF sceneRect READ sceneRect WRITE setSceneRect)
+    Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment)
+    Q_PROPERTY(QPainter::RenderHints renderHints READ renderHints WRITE setRenderHints)
+    Q_PROPERTY(DragMode dragMode READ dragMode WRITE setDragMode)
+    Q_PROPERTY(CacheMode cacheMode READ cacheMode WRITE setCacheMode)
+    Q_PROPERTY(ViewportAnchor transformationAnchor READ transformationAnchor WRITE setTransformationAnchor)
+    Q_PROPERTY(ViewportAnchor resizeAnchor READ resizeAnchor WRITE setResizeAnchor)
+    Q_PROPERTY(ViewportUpdateMode viewportUpdateMode READ viewportUpdateMode WRITE setViewportUpdateMode)
+#ifndef QT_NO_RUBBERBAND
+    Q_PROPERTY(Qt::ItemSelectionMode rubberBandSelectionMode READ rubberBandSelectionMode WRITE setRubberBandSelectionMode)
+#endif
+    Q_PROPERTY(OptimizationFlags optimizationFlags READ optimizationFlags WRITE setOptimizationFlags)
+
+public:
+    enum ViewportAnchor {
+        NoAnchor,
+        AnchorViewCenter,
+        AnchorUnderMouse
+    };
+
+    enum CacheModeFlag {
+        CacheNone = 0x0,
+        CacheBackground = 0x1
+    };
+    Q_DECLARE_FLAGS(CacheMode, CacheModeFlag)
+
+    enum DragMode {
+        NoDrag,
+        ScrollHandDrag,
+        RubberBandDrag
+    };
+
+    enum ViewportUpdateMode {
+        FullViewportUpdate,
+        MinimalViewportUpdate,
+        SmartViewportUpdate,
+        NoViewportUpdate,
+        BoundingRectViewportUpdate
+    };
+
+    enum OptimizationFlag {
+        DontClipPainter = 0x1, // obsolete
+        DontSavePainterState = 0x2,
+        DontAdjustForAntialiasing = 0x4,
+        IndirectPainting = 0x8
+    };
+    Q_DECLARE_FLAGS(OptimizationFlags, OptimizationFlag)
+
+    QGraphicsView(QWidget *parent = 0);
+    QGraphicsView(QGraphicsScene *scene, QWidget *parent = 0);
+    ~QGraphicsView();
+
+    QSize sizeHint() const;
+
+    QPainter::RenderHints renderHints() const;
+    void setRenderHint(QPainter::RenderHint hint, bool enabled = true);
+    void setRenderHints(QPainter::RenderHints hints);
+
+    Qt::Alignment alignment() const;
+    void setAlignment(Qt::Alignment alignment);
+
+    ViewportAnchor transformationAnchor() const;
+    void setTransformationAnchor(ViewportAnchor anchor);
+
+    ViewportAnchor resizeAnchor() const;
+    void setResizeAnchor(ViewportAnchor anchor);
+
+    ViewportUpdateMode viewportUpdateMode() const;
+    void setViewportUpdateMode(ViewportUpdateMode mode);
+
+    OptimizationFlags optimizationFlags() const;
+    void setOptimizationFlag(OptimizationFlag flag, bool enabled = true);
+    void setOptimizationFlags(OptimizationFlags flags);
+
+    DragMode dragMode() const;
+    void setDragMode(DragMode mode);
+
+#ifndef QT_NO_RUBBERBAND
+    Qt::ItemSelectionMode rubberBandSelectionMode() const;
+    void setRubberBandSelectionMode(Qt::ItemSelectionMode mode);
+#endif
+
+    CacheMode cacheMode() const;
+    void setCacheMode(CacheMode mode);
+    void resetCachedContent();
+
+    bool isInteractive() const;
+    void setInteractive(bool allowed);
+
+    QGraphicsScene *scene() const;
+    void setScene(QGraphicsScene *scene);
+
+    QRectF sceneRect() const;
+    void setSceneRect(const QRectF &rect);
+    inline void setSceneRect(qreal x, qreal y, qreal w, qreal h);
+
+    QMatrix matrix() const;
+    void setMatrix(const QMatrix &matrix, bool combine = false);
+    void resetMatrix();
+    QTransform transform() const;
+    QTransform viewportTransform() const;
+    bool isTransformed() const;
+    void setTransform(const QTransform &matrix, bool combine = false);
+    void resetTransform();
+    void rotate(qreal angle);
+    void scale(qreal sx, qreal sy);
+    void shear(qreal sh, qreal sv);
+    void translate(qreal dx, qreal dy);
+
+    void centerOn(const QPointF &pos);
+    inline void centerOn(qreal x, qreal y);
+    void centerOn(const QGraphicsItem *item);
+    void ensureVisible(const QRectF &rect, int xmargin = 50, int ymargin = 50);
+    inline void ensureVisible(qreal x, qreal y, qreal w, qreal h, int xmargin = 50, int ymargin = 50);
+    void ensureVisible(const QGraphicsItem *item, int xmargin = 50, int ymargin = 50);
+    void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
+    inline void fitInView(qreal x, qreal y, qreal w, qreal h,
+                          Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
+    void fitInView(const QGraphicsItem *item,
+                   Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
+
+    void render(QPainter *painter, const QRectF &target = QRectF(), const QRect &source = QRect(),
+                Qt::AspectRatioMode aspectRatioMode = Qt::KeepAspectRatio);
+
+    QList<QGraphicsItem *> items() const;
+    QList<QGraphicsItem *> items(const QPoint &pos) const;
+    inline QList<QGraphicsItem *> items(int x, int y) const;
+    QList<QGraphicsItem *> items(const QRect &rect, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
+    inline QList<QGraphicsItem *> items(int x, int y, int w, int h, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
+    QList<QGraphicsItem *> items(const QPolygon &polygon, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
+    QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
+    QGraphicsItem *itemAt(const QPoint &pos) const;
+    inline QGraphicsItem *itemAt(int x, int y) const;
+
+    QPointF mapToScene(const QPoint &point) const;
+    QPolygonF mapToScene(const QRect &rect) const;
+    QPolygonF mapToScene(const QPolygon &polygon) const;
+    QPainterPath mapToScene(const QPainterPath &path) const;
+    QPoint mapFromScene(const QPointF &point) const;
+    QPolygon mapFromScene(const QRectF &rect) const;
+    QPolygon mapFromScene(const QPolygonF &polygon) const;
+    QPainterPath mapFromScene(const QPainterPath &path) const;
+    inline QPointF mapToScene(int x, int y) const;
+    inline QPolygonF mapToScene(int x, int y, int w, int h) const;
+    inline QPoint mapFromScene(qreal x, qreal y) const;
+    inline QPolygon mapFromScene(qreal x, qreal y, qreal w, qreal h) const;
+
+    QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
+
+    QBrush backgroundBrush() const;
+    void setBackgroundBrush(const QBrush &brush);
+
+    QBrush foregroundBrush() const;
+    void setForegroundBrush(const QBrush &brush);
+
+public Q_SLOTS:
+    void updateScene(const QList<QRectF> &rects);
+    void invalidateScene(const QRectF &rect = QRectF(), QGraphicsScene::SceneLayers layers = QGraphicsScene::AllLayers);
+    void updateSceneRect(const QRectF &rect);
+
+protected Q_SLOTS:
+    void setupViewport(QWidget *widget);
+
+protected:
+    QGraphicsView(QGraphicsViewPrivate &, QWidget *parent = 0);
+    bool event(QEvent *event);
+    bool viewportEvent(QEvent *event);
+
+#ifndef QT_NO_CONTEXTMENU
+    void contextMenuEvent(QContextMenuEvent *event);
+#endif
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dragLeaveEvent(QDragLeaveEvent *event);
+    void dragMoveEvent(QDragMoveEvent *event);
+    void dropEvent(QDropEvent *event);
+    void focusInEvent(QFocusEvent *event);
+    bool focusNextPrevChild(bool next);
+    void focusOutEvent(QFocusEvent *event);
+    void keyPressEvent(QKeyEvent *event);
+    void keyReleaseEvent(QKeyEvent *event);
+    void mouseDoubleClickEvent(QMouseEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+    void mouseMoveEvent(QMouseEvent *event);
+    void mouseReleaseEvent(QMouseEvent *event);
+#ifndef QT_NO_WHEELEVENT
+    void wheelEvent(QWheelEvent *event);
+#endif
+    void paintEvent(QPaintEvent *event);
+    void resizeEvent(QResizeEvent *event);
+    void scrollContentsBy(int dx, int dy);
+    void showEvent(QShowEvent *event);
+    void inputMethodEvent(QInputMethodEvent *event);
+
+    virtual void drawBackground(QPainter *painter, const QRectF &rect);
+    virtual void drawForeground(QPainter *painter, const QRectF &rect);
+    virtual void drawItems(QPainter *painter, int numItems,
+                           QGraphicsItem *items[],
+                           const QStyleOptionGraphicsItem options[]);
+
+private:
+    Q_DECLARE_PRIVATE(QGraphicsView)
+    Q_DISABLE_COPY(QGraphicsView)
+#ifndef QT_NO_CURSOR
+    Q_PRIVATE_SLOT(d_func(), void _q_setViewportCursor(const QCursor &))
+    Q_PRIVATE_SLOT(d_func(), void _q_unsetViewportCursor())
+#endif
+    friend class QGraphicsSceneWidget;
+    friend class QGraphicsScene;
+    friend class QGraphicsScenePrivate;
+    friend class QGraphicsItemPrivate;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsView::CacheMode)
+Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsView::OptimizationFlags)
+
+inline void QGraphicsView::setSceneRect(qreal ax, qreal ay, qreal aw, qreal ah)
+{ setSceneRect(QRectF(ax, ay, aw, ah)); }
+inline void QGraphicsView::centerOn(qreal ax, qreal ay)
+{ centerOn(QPointF(ax, ay)); }
+inline void QGraphicsView::ensureVisible(qreal ax, qreal ay, qreal aw, qreal ah, int xmargin, int ymargin)
+{ ensureVisible(QRectF(ax, ay, aw, ah), xmargin, ymargin); }
+inline void QGraphicsView::fitInView(qreal ax, qreal ay, qreal w, qreal h, Qt::AspectRatioMode mode)
+{ fitInView(QRectF(ax, ay, w, h), mode); }
+inline QList<QGraphicsItem *> QGraphicsView::items(int ax, int ay) const
+{ return items(QPoint(ax, ay)); }
+inline QList<QGraphicsItem *> QGraphicsView::items(int ax, int ay, int w, int h, Qt::ItemSelectionMode mode) const
+{ return items(QRect(ax, ay, w, h), mode); }
+inline QGraphicsItem *QGraphicsView::itemAt(int ax, int ay) const
+{ return itemAt(QPoint(ax, ay)); }
+inline QPointF QGraphicsView::mapToScene(int ax, int ay) const
+{ return mapToScene(QPoint(ax, ay)); }
+inline QPolygonF QGraphicsView::mapToScene(int ax, int ay, int w, int h) const
+{ return mapToScene(QRect(ax, ay, w, h)); }
+inline QPoint QGraphicsView::mapFromScene(qreal ax, qreal ay) const
+{ return mapFromScene(QPointF(ax, ay)); }
+inline QPolygon QGraphicsView::mapFromScene(qreal ax, qreal ay, qreal w, qreal h) const
+{ return mapFromScene(QRectF(ax, ay, w, h)); }
+
+#endif // QT_NO_GRAPHICSVIEW
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGRAPHICSVIEW_H