Improve scrolling and dynamic backlog fetching behavior

[quassel.git] / src / qtui / chatscene.h

diff --git a/src/qtui/chatscene.h b/src/qtui/chatscene.h
index 1ce9304..45ab0f4 100644 (file)
--- a/src/qtui/chatscene.h
+++ b/src/qtui/chatscene.h
@@ -18,41 +18,90 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#ifndef _CHATSCENE_H_
-#define _CHATSCENE_H_
+#ifndef CHATSCENE_H_
+#define CHATSCENE_H_
 
+#include <QAbstractItemModel>
 #include <QGraphicsScene>
+#include <QSet>
+
+#include "columnhandleitem.h"
 
-#include "messagemodel.h"
 
 class AbstractUiMsg;
-class Buffer;
 class ChatItem;
 class ChatLine;
+
 class QGraphicsSceneMouseEvent;
 
 class ChatScene : public QGraphicsScene {
   Q_OBJECT
 
   public:
-    ChatScene(MessageModel *model, QObject *parent);
+    ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent);
     virtual ~ChatScene();
 
-    Buffer *buffer() const;
-    inline MessageModel *model() const { return _model; }
+    inline QAbstractItemModel *model() const { return _model; }
+    inline QString idString() const { return _idString; }
+
+    int sectionByScenePos(int x);
+    inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
+    inline bool isSingleBufferScene() const { return _singleBufferScene; }
+    inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
+
+    inline QRectF firstColumnHandleRect() const { return firstColHandle->boundingRect().translated(firstColHandle->x(), 0); }
+    inline QRectF secondColumnHandleRect() const { return secondColHandle->boundingRect().translated(secondColHandle->x(), 0); }
 
   public slots:
+    void setWidth(qreal);
+
+    // these are used by the chatitems to notify the scene and manage selections
+    void setSelectingItem(ChatItem *item);
+    ChatItem *selectingItem() const { return _selectingItem; }
+    void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
+    void putToClipboard(const QString &);
+
+    void requestBacklog();
+
+  signals:
+    void heightChanged(qreal height);
+    void heightChangedAt(qreal ypos, qreal hdiff);
+
+  protected:
+    virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
+    virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
+    virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
 
   protected slots:
+    void rowsInserted(const QModelIndex &, int, int);
+    void rowsAboutToBeRemoved(const QModelIndex &, int, int);
 
-    void mousePressEvent ( QGraphicsSceneMouseEvent * mouseEvent );
+  private slots:
+    void rectChanged(const QRectF &);
+    void handlePositionChanged(qreal xpos);
 
   private:
-    //Buffer *_buffer;
-    //QList<ChatLine*> _lines;
-    MessageModel *_model;
-    QList<ChatItem *> _items;
+    void setHandleXLimits();
+    void updateSelection(const QPointF &pos);
+    QString selectionToString() const;
+
+    QString _idString;
+    qreal _width, _height;
+    QAbstractItemModel *_model;
+    QList<ChatLine *> _lines;
+    bool _singleBufferScene;
+
+    ColumnHandleItem *firstColHandle, *secondColHandle;
+    qreal firstColHandlePos, secondColHandlePos;
+
+    ChatItem *_selectingItem;
+    int _selectionStartCol, _selectionMinCol;
+    int _selectionStart;
+    int _selectionEnd;
+    int _firstSelectionRow, _lastSelectionRow;
+    bool _isSelecting;
 
+    int _lastBacklogSize;
 };
 
 #endif