1 /***************************************************************************
2 * Copyright (C) 2005-09 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 <QGraphicsView>
27 #include "abstractbuffercontainer.h"
29 class AbstractBufferContainer;
37 class ChatView : public QGraphicsView, public AbstractChatView {
41 ChatView(MessageFilter *, QWidget *parent = 0);
42 ChatView(BufferId bufferId, QWidget *parent = 0);
44 virtual MsgId lastMsgId() const;
45 virtual MsgId lastVisibleMsgId() const;
46 inline AbstractBufferContainer *bufferContainer() const { return _bufferContainer; }
47 inline void setBufferContainer(AbstractBufferContainer *c) { _bufferContainer = c; }
49 inline ChatScene *scene() const { return _scene; }
51 //! Return a set of ChatLines currently visible in the view
52 /** \param mode How partially visible ChatLines are handled
53 * \return A set of visible ChatLines
55 QSet<ChatLine *> visibleChatLines(Qt::ItemSelectionMode mode = Qt::ContainsItemBoundingRect) const;
57 //! Return a sorted list of ChatLines currently visible in the view
58 /** \param mode How partially visible ChatLines are handled
59 * \return A list of visible ChatLines sorted by row
60 * \note If the order of ChatLines does not matter, use visibleChatLines() instead
62 QList<ChatLine *> visibleChatLinesSorted(Qt::ItemSelectionMode mode = Qt::ContainsItemBoundingRect) const;
64 //! Return the last fully visible ChatLine in this view
65 /** Using this method more efficient than calling visibleChatLinesSorted() and taking its last element.
66 * \return The last fully visible ChatLine in the view
68 ChatLine *lastVisibleChatLine() const;
70 virtual void addActionsToMenu(QMenu *, const QPointF &pos);
72 inline bool isMarkerLineVisible() const { return _markerLineVisible; }
73 inline ChatLine *markedLine() const { return _markedLine; }
75 //! Tell the view that this ChatLine has cached data
76 /** ChatLines cache some layout data that should be cleared as soon as it's no
77 * longer visible. A ChatLine caching data registers itself with this method to
78 * tell the view about it. The view will call ChatLine::clearCache() when
80 * \param line The ChatLine having cached data
82 void setHasCache(ChatLine *line, bool hasCache = true);
85 inline virtual void clear() {}
90 void setMarkerLineVisible(bool visible = true);
91 void setMarkedLine(ChatLine *line);
94 virtual bool event(QEvent *event);
95 virtual void resizeEvent(QResizeEvent *event);
96 virtual void scrollContentsBy(int dx, int dy);
99 virtual void verticalScrollbarChanged(int);
102 void lastLineChanged(QGraphicsItem *chatLine, qreal offset);
103 void adjustSceneRect();
104 void checkChatLineCaches();
105 void mouseMoveWhileSelecting(const QPointF &scenePos);
106 void scrollTimerTimeout();
107 void invalidateFilter();
108 void markerLineSet(BufferId buffer, MsgId msg);
111 void init(MessageFilter *filter);
113 AbstractBufferContainer *_bufferContainer;
115 int _lastScrollbarPos;
116 qreal _currentScaleFactor;
119 bool _invalidateFilter;
120 bool _markerLineVisible;
121 ChatLine *_markedLine;
122 QSet<ChatLine *> _linesWithCache;