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>
35 class ColumnHandleItem;
37 class QGraphicsSceneMouseEvent;
39 class ChatScene : public QGraphicsScene {
43 ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent);
46 inline QAbstractItemModel *model() const { return _model; }
47 inline QString idString() const { return _idString; }
49 inline bool isFetchingBacklog() const;
50 inline bool isBacklogFetchingEnabled() const;
51 inline BufferId bufferForBacklogFetching() const;
56 // these are used by the chatitems to notify the scene and manage selections
57 void setSelectingItem(ChatItem *item);
58 ChatItem *selectingItem() const { return _selectingItem; }
59 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
61 void setIsFetchingBacklog(bool);
62 inline void setBufferForBacklogFetching(BufferId buffer);
65 void heightChanged(qreal height);
68 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
69 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
70 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
73 void rowsInserted(const QModelIndex &, int, int);
77 void rectChanged(const QRectF &);
78 void handlePositionChanged(qreal xpos);
81 void updateSelection(const QPointF &pos);
82 QString selectionToString() const;
83 void requestBacklogIfNeeded();
86 qreal _width, _height;
87 QAbstractItemModel *_model;
88 QList<ChatLine *> _lines;
90 ColumnHandleItem *firstColHandle, *secondColHandle;
91 qreal firstColHandlePos, secondColHandlePos;
93 ChatItem *_selectingItem, *_lastItem;
94 QSet<ChatLine *> _selectedItems;
95 int _selectionStartCol, _selectionMinCol;
100 bool _fetchingBacklog;
101 BufferId _backlogFetchingBuffer;
102 MsgId _lastBacklogOffset;
103 int _lastBacklogSize;
106 bool ChatScene::isFetchingBacklog() const {
107 return _fetchingBacklog;
110 bool ChatScene::isBacklogFetchingEnabled() const {
111 return _backlogFetchingBuffer.isValid();
114 BufferId ChatScene::bufferForBacklogFetching() const {
115 return _backlogFetchingBuffer;
118 void ChatScene::setBufferForBacklogFetching(BufferId buf) {
119 _backlogFetchingBuffer = buf;