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 {
42 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent);
45 inline QAbstractItemModel *model() const { return _model; }
46 inline QString idString() const { return _idString; }
48 int sectionByScenePos(int x);
49 inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
50 inline bool isSingleBufferScene() const { return _singleBufferScene; }
51 inline bool containsBuffer(const BufferId &id) const;
52 inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
54 inline ColumnHandleItem *firstColumnHandle() const { return _firstColHandle; }
55 inline ColumnHandleItem *secondColumnHandle() const { return _secondColHandle; }
58 void updateForViewport(qreal width, qreal height);
59 void setWidth(qreal width);
61 // these are used by the chatitems to notify the scene and manage selections
62 void setSelectingItem(ChatItem *item);
63 ChatItem *selectingItem() const { return _selectingItem; }
64 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
65 void putToClipboard(const QString &);
67 void requestBacklog();
69 void loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect);
70 void clearWebPreview(ChatItem *parentItem = 0);
73 void lastLineChanged(QGraphicsItem *item, qreal offset);
76 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
77 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
78 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
79 virtual void customEvent(QEvent *event);
82 void rowsInserted(const QModelIndex &, int, int);
83 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
86 void firstHandlePositionChanged(qreal xpos);
87 void secondHandlePositionChanged(qreal xpos);
88 void showWebPreviewEvent();
89 void deleteWebPreviewEvent();
92 void setHandleXLimits();
93 void updateSelection(const QPointF &pos);
94 QString selectionToString() const;
97 QAbstractItemModel *_model;
98 QList<ChatLine *> _lines;
99 bool _singleBufferScene;
101 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
102 // we store the size in a member variable.
104 int _firstLineRow; // the first row to display (aka: not a daychange msg)
105 void updateSceneRect(qreal width);
106 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
107 void updateSceneRect(const QRectF &rect);
108 qreal _viewportHeight;
110 ColumnHandleItem *_firstColHandle, *_secondColHandle;
111 qreal _firstColHandlePos, _secondColHandlePos;
113 ChatItem *_selectingItem;
114 int _selectionStartCol, _selectionMinCol;
117 int _firstSelectionRow, _lastSelectionRow;
121 ChatItem *parentItem;
122 QGraphicsItem *previewItem;
127 WebPreview() : parentItem(0), previewItem(0) {}
129 WebPreview webPreview;
132 bool ChatScene::containsBuffer(const BufferId &id) const {
133 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
135 return filter->containsBuffer(id);