1 /***************************************************************************
2 * Copyright (C) 2005-2012 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>
32 #include "chatlinemodel.h"
33 #include "messagefilter.h"
39 class ColumnHandleItem;
43 class QGraphicsSceneMouseEvent;
45 class ChatScene : public QGraphicsScene {
55 ChatLineType = QGraphicsItem::UserType + 1,
57 TimestampChatItemType,
74 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent);
77 inline QAbstractItemModel *model() const { return _model; }
78 inline MessageFilter *filter() const { return qobject_cast<MessageFilter*>(_model); }
79 inline QString idString() const { return _idString; }
81 int rowByScenePos(qreal y) const;
82 inline int rowByScenePos(const QPointF &pos) const { return rowByScenePos(pos.y()); }
83 ChatLineModel::ColumnType columnByScenePos(qreal x) const ;
84 inline ChatLineModel::ColumnType columnByScenePos(const QPointF &pos) const { return columnByScenePos(pos.x()); }
86 ChatView *chatView() const;
87 ChatItem *chatItemAt(const QPointF &pos) const;
88 inline ChatLine *chatLine(int row) const { return (row < _lines.count()) ? _lines.value(row) : 0; }
89 inline ChatLine *chatLine(const QModelIndex &index) const { return _lines.value(index.row()); }
91 //! Find the ChatLine belonging to a MsgId
92 /** Searches for the ChatLine belonging to a MsgId. If there are more than one ChatLine with the same msgId,
93 * the first one is returned.
94 * Note that this method performs a binary search, hence it has as complexity of O(log n).
95 * If matchExact is false, and we don't have an exact match for the given msgId, we return the visible line right
96 * above the requested one.
97 * \param msgId The message ID to look for
98 * \param matchExact Whether we find only exact matches
99 * \param ignoreDayChange Whether we ignore day change messages
100 * \return The ChatLine corresponding to the given MsgId
102 ChatLine *chatLine(MsgId msgId, bool matchExact = true, bool ignoreDayChange = true) const;
104 inline ChatLine *lastLine() const { return _lines.count() ? _lines.last() : 0; }
106 inline MarkerLineItem *markerLine() const { return _markerLine; }
108 inline bool isSingleBufferScene() const { return _singleBufferId.isValid(); }
109 inline BufferId singleBufferId() const { return _singleBufferId; }
110 bool containsBuffer(const BufferId &id) const;
112 ColumnHandleItem *firstColumnHandle() const;
113 ColumnHandleItem *secondColumnHandle() const;
115 inline CutoffMode senderCutoffMode() const { return _cutoffMode; }
116 inline void setSenderCutoffMode(CutoffMode mode) { _cutoffMode = mode; }
118 QString selection() const;
119 bool hasSelection() const;
120 bool hasGlobalSelection() const;
121 bool isPosOverSelection(const QPointF &) const;
122 bool isGloballySelecting() const;
123 void initiateDrag(QWidget *source);
125 bool isScrollingAllowed() const;
128 void updateForViewport(qreal width, qreal height);
129 void setWidth(qreal width);
130 void layout(int start, int end, qreal width);
132 void setMarkerLineVisible(bool visible = true);
133 void setMarkerLine(MsgId msgId = MsgId());
134 void jumpToMarkerLine(bool requestBacklog);
136 // these are used by the chatitems to notify the scene and manage selections
137 void setSelectingItem(ChatItem *item);
138 ChatItem *selectingItem() const { return _selectingItem; }
139 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
140 void clearGlobalSelection();
141 void clearSelection();
142 void selectionToClipboard(QClipboard::Mode = QClipboard::Clipboard);
143 void stringToClipboard(const QString &str, QClipboard::Mode = QClipboard::Clipboard);
145 void requestBacklog();
148 void loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect);
149 void clearWebPreview(ChatItem *parentItem = 0);
153 void lastLineChanged(QGraphicsItem *item, qreal offset);
154 void layoutChanged(); // indicates changes to the scenerect due to resizing of the contentsitems
155 void mouseMoveWhileSelecting(const QPointF &scenePos);
158 virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *contextMenuEvent);
159 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
160 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
161 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
162 virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *mouseEvent);
163 virtual void handleClick(Qt::MouseButton button, const QPointF &scenePos);
166 void rowsInserted(const QModelIndex &, int, int);
167 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
168 void dataChanged(const QModelIndex &, const QModelIndex &);
171 void firstHandlePositionChanged(qreal xpos);
172 void secondHandlePositionChanged(qreal xpos);
174 void webPreviewNextStep();
176 void showWebPreviewChanged();
183 void setHandleXLimits();
184 void updateSelection(const QPointF &pos);
188 QAbstractItemModel *_model;
189 QList<ChatLine *> _lines;
190 BufferId _singleBufferId;
192 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
193 // we store the size in a member variable.
195 int _firstLineRow; // the first row to display (aka: not a daychange msg)
196 void updateSceneRect(qreal width);
197 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
198 void updateSceneRect(const QRectF &rect);
199 qreal _viewportHeight;
201 MarkerLineItem *_markerLine;
202 bool _markerLineVisible, _markerLineValid, _markerLineJumpPending;
204 ColumnHandleItem *_firstColHandle, *_secondColHandle;
205 qreal _firstColHandlePos, _secondColHandlePos;
206 CutoffMode _cutoffMode;
208 ChatItem *_selectingItem;
209 int _selectionStartCol, _selectionMinCol;
212 int _firstSelectionRow;
216 ClickMode _clickMode;
219 bool _leftButtonPressed;
221 bool _showWebPreview;
232 ChatItem *parentItem;
233 QGraphicsItem *previewItem;
236 PreviewState previewState;
238 WebPreview() : parentItem(0), previewItem(0), previewState(NoPreview) {}
240 WebPreview webPreview;
241 #endif // HAVE_WEBKIT