fixing BR #261 (making fields removable from the chatmonitor). Changes effect current...
[quassel.git] / src / qtui / chatscene.h
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2  *   Copyright (C) 2005-08 by the Quassel Project                          *
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20
21 #ifndef _CHATSCENE_H_
22 #define _CHATSCENE_H_
23
24 #include <QAbstractItemModel>
25 #include <QGraphicsScene>
26 #include <QSet>
27
28 #include "types.h"
29
30 class AbstractUiMsg;
31 class Buffer;
32 class BufferId;
33 class ChatItem;
34 class ChatLine;
35 class ColumnHandleItem;
36
37 class QGraphicsSceneMouseEvent;
38
39 class ChatScene : public QGraphicsScene {
40   Q_OBJECT
41
42   public:
43     ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent);
44     virtual ~ChatScene();
45
46     inline QAbstractItemModel *model() const { return _model; }
47     inline QString idString() const { return _idString; }
48
49     inline bool isFetchingBacklog() const;
50     inline bool isBacklogFetchingEnabled() const;
51     inline BufferId bufferForBacklogFetching() const;
52     int sectionByScenePos(int x);
53     inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
54
55   public slots:
56     void setWidth(qreal);
57
58     // these are used by the chatitems to notify the scene and manage selections
59     void setSelectingItem(ChatItem *item);
60     ChatItem *selectingItem() const { return _selectingItem; }
61     void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
62
63     void setIsFetchingBacklog(bool);
64     inline void setBufferForBacklogFetching(BufferId buffer);
65
66   signals:
67     void heightChanged(qreal height);
68
69   protected:
70     virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
71     virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
72     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
73
74   protected slots:
75     void rowsInserted(const QModelIndex &, int, int);
76     void modelReset();
77
78   private slots:
79     void rectChanged(const QRectF &);
80     void handlePositionChanged(qreal xpos);
81
82   private:
83     void updateSelection(const QPointF &pos);
84     QString selectionToString() const;
85     void requestBacklogIfNeeded();
86
87     QString _idString;
88     qreal _width, _height;
89     QAbstractItemModel *_model;
90     QList<ChatLine *> _lines;
91
92     ColumnHandleItem *firstColHandle, *secondColHandle;
93     qreal firstColHandlePos, secondColHandlePos;
94
95     ChatItem *_selectingItem, *_lastItem;
96     QSet<ChatLine *> _selectedItems;
97     int _selectionStartCol, _selectionMinCol;
98     int _selectionStart;
99     int _selectionEnd;
100     bool _isSelecting;
101
102     bool _fetchingBacklog;
103     BufferId _backlogFetchingBuffer;
104     MsgId _lastBacklogOffset;
105     int _lastBacklogSize;
106 };
107
108 bool ChatScene::isFetchingBacklog() const {
109   return _fetchingBacklog;
110 }
111
112 bool ChatScene::isBacklogFetchingEnabled() const {
113   return _backlogFetchingBuffer.isValid();
114 }
115
116 BufferId ChatScene::bufferForBacklogFetching() const {
117   return _backlogFetchingBuffer;
118 }
119
120 void ChatScene::setBufferForBacklogFetching(BufferId buf) {
121   _backlogFetchingBuffer = buf;
122 }
123
124 #endif