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 {
43 ClearWebPreviewEventType = QEvent::User
45 class ClearWebPreviewEvent;
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; }
63 void updateForViewport(qreal width, qreal height);
64 void setWidth(qreal, bool forceReposition = false);
66 // these are used by the chatitems to notify the scene and manage selections
67 void setSelectingItem(ChatItem *item);
68 ChatItem *selectingItem() const { return _selectingItem; }
69 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
70 void putToClipboard(const QString &);
72 void requestBacklog();
74 void loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect);
75 void clearWebPreview(ChatItem *parentItem = 0);
78 void lastLineChanged(QGraphicsItem *item, qreal offset);
81 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
82 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
83 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
84 virtual void customEvent(QEvent *event);
87 void rowsInserted(const QModelIndex &, int, int);
88 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
91 void handlePositionChanged(qreal xpos);
92 void showWebPreview();
93 void clearWebPreviewEvent(ClearWebPreviewEvent *event);
94 void deleteWebPreview();
97 void setHandleXLimits();
98 void updateSelection(const QPointF &pos);
99 QString selectionToString() const;
102 QAbstractItemModel *_model;
103 QList<ChatLine *> _lines;
104 bool _singleBufferScene;
106 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
107 // we store the size in a member variable.
109 int _firstLineRow; // the first row to display (aka: not a daychange msg)
110 void updateSceneRect();
111 void updateSceneRect(qreal width);
112 void updateSceneRect(const QRectF &rect);
113 qreal _viewportHeight;
115 ColumnHandleItem *firstColHandle, *secondColHandle;
116 qreal firstColHandlePos, secondColHandlePos;
118 ChatItem *_selectingItem;
119 int _selectionStartCol, _selectionMinCol;
122 int _firstSelectionRow, _lastSelectionRow;
125 int _lastBacklogSize;
128 ChatItem *parentItem;
129 QGraphicsItem *previewItem;
134 WebPreview() : parentItem(0), previewItem(0) {}
136 WebPreview webPreview;
139 bool ChatScene::containsBuffer(const BufferId &id) const {
140 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
142 return filter->containsBuffer(id);