1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include <QAbstractItemModel>
25 #include <QGraphicsScene>
34 class ColumnHandleItem;
36 class QGraphicsSceneMouseEvent;
38 class ChatScene : public QGraphicsScene {
42 ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent);
45 inline QAbstractItemModel *model() const { return _model; }
46 inline QString idString() const { return _idString; }
48 inline bool isFetchingBacklog() const;
49 inline bool isBacklogFetchingEnabled() const;
50 inline BufferId bufferForBacklogFetching() const;
51 int sectionByScenePos(int x);
52 inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
57 // these are used by the chatitems to notify the scene and manage selections
58 void setSelectingItem(ChatItem *item);
59 ChatItem *selectingItem() const { return _selectingItem; }
60 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
62 void setIsFetchingBacklog(bool);
63 inline void setBufferForBacklogFetching(BufferId buffer);
66 void heightChanged(qreal height);
69 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
70 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
71 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
74 void rowsInserted(const QModelIndex &, int, int);
78 void rectChanged(const QRectF &);
79 void handlePositionChanged(qreal xpos);
82 void updateSelection(const QPointF &pos);
83 QString selectionToString() const;
84 void requestBacklogIfNeeded();
87 qreal _width, _height;
88 QAbstractItemModel *_model;
89 QList<ChatLine *> _lines;
91 ColumnHandleItem *firstColHandle, *secondColHandle;
92 qreal firstColHandlePos, secondColHandlePos;
94 ChatItem *_selectingItem, *_lastItem;
95 QSet<ChatLine *> _selectedItems;
96 int _selectionStartCol, _selectionMinCol;
101 bool _fetchingBacklog;
102 BufferId _backlogFetchingBuffer;
103 MsgId _lastBacklogOffset;
104 int _lastBacklogSize;
107 bool ChatScene::isFetchingBacklog() const {
108 return _fetchingBacklog;
111 bool ChatScene::isBacklogFetchingEnabled() const {
112 return _backlogFetchingBuffer.isValid();
115 BufferId ChatScene::bufferForBacklogFetching() const {
116 return _backlogFetchingBuffer;
119 void ChatScene::setBufferForBacklogFetching(BufferId buf) {
120 _backlogFetchingBuffer = buf;