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 {
48 ChatLineType = QGraphicsItem::UserType + 1,
50 TimestampChatItemType,
57 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent);
60 inline QAbstractItemModel *model() const { return _model; }
61 inline QString idString() const { return _idString; }
63 int sectionByScenePos(int x);
64 inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
65 inline bool isSingleBufferScene() const { return _singleBufferScene; }
66 inline bool containsBuffer(const BufferId &id) const;
67 inline ChatLine *chatLine(int row) { return (row < _lines.count()) ? _lines[row] : 0; }
69 inline ColumnHandleItem *firstColumnHandle() const { return _firstColHandle; }
70 inline ColumnHandleItem *secondColumnHandle() const { return _secondColHandle; }
72 inline CutoffMode senderCutoffMode() const { return _cutoffMode; }
73 inline void setSenderCutoffMode(CutoffMode mode) { _cutoffMode = mode; }
75 bool isScrollingAllowed() const;
77 virtual bool event(QEvent *e);
80 void updateForViewport(qreal width, qreal height);
81 void setWidth(qreal width);
83 // these are used by the chatitems to notify the scene and manage selections
84 void setSelectingItem(ChatItem *item);
85 ChatItem *selectingItem() const { return _selectingItem; }
86 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
87 void putToClipboard(const QString &);
89 void requestBacklog();
91 void loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect);
92 void clearWebPreview(ChatItem *parentItem = 0);
95 void lastLineChanged(QGraphicsItem *item, qreal offset);
96 void layoutChanged(); // indicates changes to the scenerect due to resizing of the contentsitems
97 void mouseMoveWhileSelecting(const QPointF &scenePos);
100 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
101 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
102 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
105 void rowsInserted(const QModelIndex &, int, int);
106 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
109 void firstHandlePositionChanged(qreal xpos);
110 void secondHandlePositionChanged(qreal xpos);
111 void showWebPreviewEvent();
112 void deleteWebPreviewEvent();
115 void setHandleXLimits();
116 void updateSelection(const QPointF &pos);
117 QString selectionToString() const;
120 QAbstractItemModel *_model;
121 QList<ChatLine *> _lines;
122 bool _singleBufferScene;
124 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
125 // we store the size in a member variable.
127 int _firstLineRow; // the first row to display (aka: not a daychange msg)
128 void updateSceneRect(qreal width);
129 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
130 void updateSceneRect(const QRectF &rect);
131 qreal _viewportHeight;
133 ColumnHandleItem *_firstColHandle, *_secondColHandle;
134 qreal _firstColHandlePos, _secondColHandlePos;
135 CutoffMode _cutoffMode;
137 ChatItem *_selectingItem;
138 int _selectionStartCol, _selectionMinCol;
141 int _firstSelectionRow;
145 ChatItem *parentItem;
146 QGraphicsItem *previewItem;
151 WebPreview() : parentItem(0), previewItem(0) {}
153 WebPreview webPreview;
156 bool ChatScene::containsBuffer(const BufferId &id) const {
157 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
159 return filter->containsBuffer(id);