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>
28 #include "columnhandleitem.h"
29 #include "messagefilter.h"
35 class QGraphicsSceneMouseEvent;
37 class ChatScene : public QGraphicsScene {
41 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent);
44 inline QAbstractItemModel *model() const { return _model; }
45 inline QString idString() const { return _idString; }
47 int sectionByScenePos(int x);
48 inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
49 inline bool isSingleBufferScene() const { return _singleBufferScene; }
50 inline bool containsBuffer(const BufferId &id) const;
51 inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
53 inline ColumnHandleItem *firstColumnHandle() const { return firstColHandle; }
54 inline ColumnHandleItem *secondColumnHandle() const { return secondColHandle; }
57 void updateForViewport(qreal width, qreal height);
58 void setWidth(qreal, bool forceReposition = false);
60 // these are used by the chatitems to notify the scene and manage selections
61 void setSelectingItem(ChatItem *item);
62 ChatItem *selectingItem() const { return _selectingItem; }
63 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
64 void putToClipboard(const QString &);
66 void requestBacklog();
69 void lastLineChanged(QGraphicsItem *);
72 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
73 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
74 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
77 void rowsInserted(const QModelIndex &, int, int);
78 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
81 void handlePositionChanged(qreal xpos);
84 void setHandleXLimits();
85 void updateSelection(const QPointF &pos);
86 QString selectionToString() const;
89 QAbstractItemModel *_model;
90 QList<ChatLine *> _lines;
91 bool _singleBufferScene;
93 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
94 // we store the size in a member variable.
96 void updateSceneRect(const QRectF &rect);
97 qreal _viewportHeight;
99 ColumnHandleItem *firstColHandle, *secondColHandle;
100 qreal firstColHandlePos, secondColHandlePos;
102 ChatItem *_selectingItem;
103 int _selectionStartCol, _selectionMinCol;
106 int _firstSelectionRow, _lastSelectionRow;
109 int _lastBacklogSize;
112 bool ChatScene::containsBuffer(const BufferId &id) const {
113 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
115 return filter->containsBuffer(id);