Some cleanups in ChatScene in preparation to mouse handling revamp

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

diff --git a/src/qtui/chatscene.h b/src/qtui/chatscene.h
index 66026c1..3349d2f 100644 (file)
--- a/src/qtui/chatscene.h
+++ b/src/qtui/chatscene.h
@@ -22,15 +22,20 @@
 #define CHATSCENE_H_
 
 #include <QAbstractItemModel>
+#include <QGraphicsItem>
 #include <QGraphicsScene>
 #include <QSet>
+#include <QTimer>
 
-#include "columnhandleitem.h"
-
+#include "chatlinemodel.h"
+#include "messagefilter.h"
 
 class AbstractUiMsg;
 class ChatItem;
 class ChatLine;
+class ChatView;
+class ColumnHandleItem;
+class WebPreviewItem;
 
 class QGraphicsSceneMouseEvent;
 
@@ -38,67 +43,155 @@ class ChatScene : public QGraphicsScene {
   Q_OBJECT
 
 public:
-  ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent);
+  enum CutoffMode {
+    CutoffLeft,
+    CutoffRight
+  };
+
+  enum ItemType {
+    ChatLineType = QGraphicsItem::UserType + 1,
+    ChatItemType,
+    TimestampChatItemType,
+    SenderChatItemType,
+    ContentsChatItemType,
+    SearchHighlightType,
+    WebPreviewType,
+    ColumnHandleType
+  };
+
+  enum ClickMode {
+    NoClick,
+    SingleClick,
+    DoubleClick,
+    TripleClick,
+    DragStartClick
+  };
+
+  ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent);
   virtual ~ChatScene();
 
   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()); }
+  int rowByScenePos(qreal y);
+  inline int rowByScenePos(const QPointF &pos) { return rowByScenePos(pos.y()); }
+  ChatLineModel::ColumnType columnByScenePos(qreal x);
+  inline ChatLineModel::ColumnType columnByScenePos(const QPointF &pos) { return columnByScenePos(pos.x()); }
+
+  ChatView *chatView() const;
+  ChatItem *chatItemAt(const QPointF &pos) const;
+
   inline bool isSingleBufferScene() const { return _singleBufferScene; }
+  bool containsBuffer(const BufferId &id) const;
   inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
 
-  inline ColumnHandleItem *firstColumnHandle() const { return firstColHandle; }
-  inline ColumnHandleItem *secondColumnHandle() const { return secondColHandle; }
+  ColumnHandleItem *firstColumnHandle() const;
+  ColumnHandleItem *secondColumnHandle() const;
+
+  inline CutoffMode senderCutoffMode() const { return _cutoffMode; }
+  inline void setSenderCutoffMode(CutoffMode mode) { _cutoffMode = mode; }
+
+  QString selection() const;
+  inline bool hasGlobalSelection() const { return _selectionStart >= 0; }
+  inline bool isGloballySelecting() const { return _isSelecting; }
+  bool isPosOverSelection(const QPointF &) const;
+  void initiateDrag(QWidget *source);
+
+  bool isScrollingAllowed() const;
 
-public slots:
-  void setWidth(qreal, bool forceReposition = false);
+  virtual bool event(QEvent *e);
+
+ public slots:
+  void updateForViewport(qreal width, qreal height);
+  void setWidth(qreal width);
 
   // 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 clearGlobalSelection();
+  void clearSelection();
+
   void putToClipboard(const QString &);
 
   void requestBacklog();
 
+  void loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect);
+  void clearWebPreview(ChatItem *parentItem = 0);
+
 signals:
-  void sceneHeightChanged(qreal dh);
+  void lastLineChanged(QGraphicsItem *item, qreal offset);
+  void layoutChanged(); // indicates changes to the scenerect due to resizing of the contentsitems
+  void mouseMoveWhileSelecting(const QPointF &scenePos);
 
 protected:
   virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
   virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
   virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
+  virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *mouseEvent);
+  virtual void handleClick(Qt::MouseButton button, const QPointF &scenePos);
 
 protected slots:
   void rowsInserted(const QModelIndex &, int, int);
   void rowsAboutToBeRemoved(const QModelIndex &, int, int);
 
 private slots:
-  void handlePositionChanged(qreal xpos);
+  void firstHandlePositionChanged(qreal xpos);
+  void secondHandlePositionChanged(qreal xpos);
+  void showWebPreviewEvent();
+  void deleteWebPreviewEvent();
+  void showWebPreviewChanged();
+
+  void clickTimeout();
 
 private:
   void setHandleXLimits();
   void updateSelection(const QPointF &pos);
-  QString selectionToString() const;
 
+  ChatView *_chatView;
   QString _idString;
   QAbstractItemModel *_model;
   QList<ChatLine *> _lines;
   bool _singleBufferScene;
 
-  ColumnHandleItem *firstColHandle, *secondColHandle;
-  qreal firstColHandlePos, secondColHandlePos;
+  // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
+  // we store the size in a member variable.
+  QRectF _sceneRect;
+  int _firstLineRow; // the first row to display (aka: not a daychange msg)
+  void updateSceneRect(qreal width);
+  inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
+  void updateSceneRect(const QRectF &rect);
+  qreal _viewportHeight;
+
+  ColumnHandleItem *_firstColHandle, *_secondColHandle;
+  qreal _firstColHandlePos, _secondColHandlePos;
+  CutoffMode _cutoffMode;
 
   ChatItem *_selectingItem;
   int _selectionStartCol, _selectionMinCol;
   int _selectionStart;
   int _selectionEnd;
-  int _firstSelectionRow, _lastSelectionRow;
+  int _firstSelectionRow;
   bool _isSelecting;
 
-  int _lastBacklogSize;
+  QTimer _clickTimer;
+  ClickMode _clickMode;
+  QPointF _clickPos;
+  bool _clickHandled;
+  bool _leftButtonPressed;
+
+  bool _showWebPreview;
+
+  struct WebPreview {
+    ChatItem *parentItem;
+    QGraphicsItem *previewItem;
+    QString url;
+    QRectF urlRect;
+    QTimer delayTimer;
+    QTimer deleteTimer;
+    WebPreview() : parentItem(0), previewItem(0) {}
+  };
+  WebPreview webPreview;
 };
 
 #endif