1 /***************************************************************************
2 * Copyright (C) 2005-2010 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>
26 #include <QGraphicsItem>
27 #include <QGraphicsScene>
31 #include "chatlinemodel.h"
32 #include "messagefilter.h"
38 class ColumnHandleItem;
42 class QGraphicsSceneMouseEvent;
44 class ChatScene : public QGraphicsScene {
54 ChatLineType = QGraphicsItem::UserType + 1,
56 TimestampChatItemType,
73 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent);
76 inline QAbstractItemModel *model() const { return _model; }
77 inline MessageFilter *filter() const { return qobject_cast<MessageFilter*>(_model); }
78 inline QString idString() const { return _idString; }
80 int rowByScenePos(qreal y) const;
81 inline int rowByScenePos(const QPointF &pos) const { return rowByScenePos(pos.y()); }
82 ChatLineModel::ColumnType columnByScenePos(qreal x) const ;
83 inline ChatLineModel::ColumnType columnByScenePos(const QPointF &pos) const { return columnByScenePos(pos.x()); }
85 ChatView *chatView() const;
86 ChatItem *chatItemAt(const QPointF &pos) const;
87 inline ChatLine *chatLine(int row) const { return (row < _lines.count()) ? _lines.value(row) : 0; }
88 inline ChatLine *chatLine(const QModelIndex &index) const { return _lines.value(index.row()); }
90 //! Find the ChatLine belonging to a MsgId
91 /** Searches for the ChatLine belonging to a MsgId.
92 * Note that this method performs a binary search, hence it has as complexity of O(log n).
93 * If matchExact is false, and we don't have an exact match for the given msgId, we return the visible line right
94 * above the requested one.
95 * \param msgId The message ID to look for
96 * \param matchExact Whether we find only exact matches
97 * \return The ChatLine corresponding to the given MsgId
99 ChatLine *chatLine(MsgId msgId, bool matchExact = true) const;
101 inline ChatLine *lastLine() const { return _lines.count() ? _lines.last() : 0; }
103 inline bool isSingleBufferScene() const { return _singleBufferId.isValid(); }
104 inline BufferId singleBufferId() const { return _singleBufferId; }
105 bool containsBuffer(const BufferId &id) const;
107 ColumnHandleItem *firstColumnHandle() const;
108 ColumnHandleItem *secondColumnHandle() const;
110 inline CutoffMode senderCutoffMode() const { return _cutoffMode; }
111 inline void setSenderCutoffMode(CutoffMode mode) { _cutoffMode = mode; }
113 QString selection() const;
114 bool hasSelection() const;
115 bool hasGlobalSelection() const;
116 bool isPosOverSelection(const QPointF &) const;
117 bool isGloballySelecting() const;
118 void initiateDrag(QWidget *source);
120 bool isScrollingAllowed() const;
122 virtual bool event(QEvent *e);
125 void updateForViewport(qreal width, qreal height);
126 void setWidth(qreal width);
127 void layout(int start, int end, qreal width);
129 void setMarkerLineVisible(bool visible = true);
130 void setMarkerLine(MsgId msgId);
132 // these are used by the chatitems to notify the scene and manage selections
133 void setSelectingItem(ChatItem *item);
134 ChatItem *selectingItem() const { return _selectingItem; }
135 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
136 void clearGlobalSelection();
137 void clearSelection();
138 void selectionToClipboard(QClipboard::Mode = QClipboard::Clipboard);
139 void stringToClipboard(const QString &str, QClipboard::Mode = QClipboard::Clipboard);
141 void requestBacklog();
144 void loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect);
145 void clearWebPreview(ChatItem *parentItem = 0);
149 void lastLineChanged(QGraphicsItem *item, qreal offset);
150 void layoutChanged(); // indicates changes to the scenerect due to resizing of the contentsitems
151 void mouseMoveWhileSelecting(const QPointF &scenePos);
154 virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *contextMenuEvent);
155 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
156 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
157 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
158 virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *mouseEvent);
159 virtual void handleClick(Qt::MouseButton button, const QPointF &scenePos);
162 void rowsInserted(const QModelIndex &, int, int);
163 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
164 void dataChanged(const QModelIndex &, const QModelIndex &);
167 void firstHandlePositionChanged(qreal xpos);
168 void secondHandlePositionChanged(qreal xpos);
170 void webPreviewNextStep();
172 void showWebPreviewChanged();
179 void setHandleXLimits();
180 void updateSelection(const QPointF &pos);
184 QAbstractItemModel *_model;
185 QList<ChatLine *> _lines;
186 BufferId _singleBufferId;
188 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
189 // we store the size in a member variable.
191 int _firstLineRow; // the first row to display (aka: not a daychange msg)
192 void updateSceneRect(qreal width);
193 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
194 void updateSceneRect(const QRectF &rect);
195 qreal _viewportHeight;
197 MarkerLineItem *_markerLine;
198 bool _markerLineValid, _markerLineVisible;
200 ColumnHandleItem *_firstColHandle, *_secondColHandle;
201 qreal _firstColHandlePos, _secondColHandlePos;
202 CutoffMode _cutoffMode;
204 ChatItem *_selectingItem;
205 int _selectionStartCol, _selectionMinCol;
208 int _firstSelectionRow;
212 ClickMode _clickMode;
215 bool _leftButtonPressed;
217 bool _showWebPreview;
228 ChatItem *parentItem;
229 QGraphicsItem *previewItem;
232 PreviewState previewState;
234 WebPreview() : parentItem(0), previewItem(0), previewState(NoPreview) {}
236 WebPreview webPreview;
237 #endif // HAVE_WEBKIT