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"
36 class QGraphicsSceneMouseEvent;
38 class ChatScene : public QGraphicsScene {
47 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent);
50 inline QAbstractItemModel *model() const { return _model; }
51 inline QString idString() const { return _idString; }
53 int sectionByScenePos(int x);
54 inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
55 inline bool isSingleBufferScene() const { return _singleBufferScene; }
56 inline bool containsBuffer(const BufferId &id) const;
57 inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
59 inline ColumnHandleItem *firstColumnHandle() const { return _firstColHandle; }
60 inline ColumnHandleItem *secondColumnHandle() const { return _secondColHandle; }
62 inline CutoffMode senderCutoffMode() const { return _cutoffMode; }
63 inline void setSenderCutoffMode(CutoffMode mode) { _cutoffMode = mode; }
65 virtual bool event(QEvent *e);
68 void updateForViewport(qreal width, qreal height);
69 void setWidth(qreal width);
71 // these are used by the chatitems to notify the scene and manage selections
72 void setSelectingItem(ChatItem *item);
73 ChatItem *selectingItem() const { return _selectingItem; }
74 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
75 void putToClipboard(const QString &);
77 void requestBacklog();
79 void loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect);
80 void clearWebPreview(ChatItem *parentItem = 0);
83 void lastLineChanged(QGraphicsItem *item, qreal offset);
86 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
87 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
88 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
91 void rowsInserted(const QModelIndex &, int, int);
92 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
95 void firstHandlePositionChanged(qreal xpos);
96 void secondHandlePositionChanged(qreal xpos);
97 void showWebPreviewEvent();
98 void deleteWebPreviewEvent();
101 void setHandleXLimits();
102 void updateSelection(const QPointF &pos);
103 QString selectionToString() const;
106 QAbstractItemModel *_model;
107 QList<ChatLine *> _lines;
108 bool _singleBufferScene;
110 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
111 // we store the size in a member variable.
113 int _firstLineRow; // the first row to display (aka: not a daychange msg)
114 void updateSceneRect(qreal width);
115 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
116 void updateSceneRect(const QRectF &rect);
117 qreal _viewportHeight;
119 ColumnHandleItem *_firstColHandle, *_secondColHandle;
120 qreal _firstColHandlePos, _secondColHandlePos;
121 CutoffMode _cutoffMode;
123 ChatItem *_selectingItem;
124 int _selectionStartCol, _selectionMinCol;
127 int _firstSelectionRow;
131 ChatItem *parentItem;
132 QGraphicsItem *previewItem;
137 WebPreview() : parentItem(0), previewItem(0) {}
139 WebPreview webPreview;
142 bool ChatScene::containsBuffer(const BufferId &id) const {
143 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
145 return filter->containsBuffer(id);