--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ginebra2/ContentViews/TiledWebView.h	Fri Oct 15 17:30:59 2010 -0400
@@ -0,0 +1,132 @@
+#ifndef TILEDWEBVIEW_H
+#define TILEDWEBVIEW_H
+
+#include <QGraphicsWebView>
+
+#include <QTime>
+#include <QTimer>
+
+#ifdef USE_OWN_TILED_CACHE
+#define USE_TILED_CACHE
+#endif
+
+//#define USE_ASSISTANT_ITEM
+
+#ifdef USE_ASSISTANT_ITEM
+class TiledWebView;
+class TiledWebViewAssistant : public QGraphicsWidget {
+public:
+    void paint(QPainter* painter, const QStyleOptionGraphicsItem* options, QWidget* widget);
+    TiledWebView* m_master;
+};
+#endif
+
+class TiledWebView : public QGraphicsWebView
+{
+    Q_OBJECT
+protected:
+    TiledWebView(QGraphicsItem* parent = 0);
+    virtual ~TiledWebView();
+
+    struct Tile {
+        Tile();
+        QPixmap img;
+        QRectF dirtyRect; // in tile coordinates
+        bool ready;
+        bool used;
+    };
+
+    struct TileSet {
+        TileSet(QPoint aT, QRectF aR) { t = aT; r = aR; }
+        TileSet(const TileSet &o) { t = o.t; r = o.r; }
+        QPoint t;
+        QRectF r;
+    };
+
+    void paint(QPainter* painter, const QStyleOptionGraphicsItem* options, QWidget* widget);
+
+    Tile* createTile(const QPoint& p);
+    Tile* tileAt(const QPoint& p) const;
+    Tile* tileAt(int x, int y) const { return tileAt(QPoint(x, y)); }
+    void setTileAt(const QPoint& p,Tile* t);
+    void setTileAt(int x, int y,Tile* t) { setTileAt(QPoint(x, y), t); }
+    QPoint tileAtPoint(const QPointF& p) const;
+    QRectF tileRect(const QPoint& t) const; // return is in tile coords
+    QRectF mapToTileCoords(const QRectF& rect) const
+        { return QRectF(mapToTileCoords(rect.topLeft()),mapToTileCoords(rect.size())); }
+
+    QPointF mapToTileCoords(const QPointF& p) const     { return p * m_tilesScale; }
+    QSizeF mapToTileCoords(const QSizeF& s) const     { return s * m_tilesScale; }
+
+    QRectF mapFromTileCoords(const QRectF& rect) const
+        { return QRectF(mapFromTileCoords(rect.topLeft()),mapFromTileCoords(rect.size())); }
+
+    QPointF mapFromTileCoords(const QPointF& p) const     { return p / m_tilesScale; }
+    QSizeF mapFromTileCoords(const QSizeF& s) const     { return s / m_tilesScale; }
+
+    QRectF viewPortRect() const;
+    QPoint findTile4Update(bool inView, bool addDirty = false) const;
+    QList<QPoint> findTileLine4Update(bool dirty, bool inView, bool useScrollDirection = true) const;
+    void boundTile(QPoint& t) const;
+    QRectF updateTile(const QPoint& t);
+    void paintTile(QPainter* painter, const QPoint& t, const QRectF& dirtyRect, QRegion& dirtyRegion);
+    void createTileField();
+
+
+    QRectF validateTileRect(const QRectF& rect, const QSize& dim) const;
+    QRectF adjustedTileRect(const QSize& dim) const;
+    QRectF centeredTileRect(const QSize& dim) const;
+    void adjustTilesToViewPort(bool center = false);
+    void moveTilesRect(const QRectF& newTilesRect);
+    void resetTiles(const QRect& r, bool remove);
+    void scrollTileField(const QPoint& diff);
+    static QPixmap* getUnprepPixmap();
+    void checkTilesField();
+    void setPage(QWebPage* page);
+    QList<QRectF> updateViewportTiles(QList<TileSet> *updatedTiles = 0);
+    QList<QRectF> updateScrollAreaTilesChunk(QList<TileSet> *updatedTiles = 0, bool inPaint = 0);
+    void doScaleCommit();
+    void doTilesFieldRebuild();
+    void updateSceneRects(const QList<QRectF>& dirtyTiles);
+#ifdef USE_ASSISTANT_ITEM
+    void resizeEvent(QGraphicsSceneResizeEvent *event);
+#endif
+    QSize getTileFieldDim();
+
+    QVector<Tile*> m_tilesPool;
+    Tile** m_tilesField;
+    QSize  m_tilesDim;
+    QRectF m_tilesRect;
+    qreal  m_tilesScale;
+    bool   m_inUpdate;
+    bool   m_tilesRectCentered;
+    QTime  m_userPaintTS;
+    QTimer m_updateTimer;
+    bool   m_tilesFrozen;
+    bool   m_needViewportTilesUpdate;
+    bool   m_needScaleCommit;
+    bool   m_needTilesFieldRebuild;
+    QPoint m_lastScrollDelta;
+#ifdef USE_ASSISTANT_ITEM
+    TiledWebViewAssistant* m_assistant;
+#endif // USE_ASSISTANT_ITEM
+
+private slots:
+    void repaintRequested(QRect);
+    void updateTimeout();
+    void scheduleScaleUpdate();
+    void startUpdateTimer();
+    void stopUpdateTimer();
+    void loadStarted();
+
+public slots:
+    void viewportUpdated();
+    void commitZoom();
+    void setTiledBackingStoreFrozen(bool frozen);
+    void userActivity();
+    void viewScrolled(QPoint& scrollPos, QPoint& delta);
+
+  friend class TiledWebViewAssistant;
+};
+
+#endif // TILEDWEBVIEW_H