1 /***************************************************************************
2 * Copyright (C) 2005-2015 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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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
56 ChatLineType = QGraphicsItem::UserType + 1,
58 TimestampChatItemType,
75 ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent);
78 inline QAbstractItemModel *model() const { return _model; }
79 inline MessageFilter *filter() const { return qobject_cast<MessageFilter *>(_model); }
80 inline QString idString() const { return _idString; }
82 int rowByScenePos(qreal y) const;
83 inline int rowByScenePos(const QPointF &pos) const { return rowByScenePos(pos.y()); }
84 ChatLineModel::ColumnType columnByScenePos(qreal x) const;
85 inline ChatLineModel::ColumnType columnByScenePos(const QPointF &pos) const { return columnByScenePos(pos.x()); }
87 ChatView *chatView() const;
88 ChatItem *chatItemAt(const QPointF &pos) const;
89 inline ChatLine *chatLine(int row) const { return (row < _lines.count()) ? _lines.value(row) : 0; }
90 inline ChatLine *chatLine(const QModelIndex &index) const { return _lines.value(index.row()); }
92 //! Find the ChatLine belonging to a MsgId
93 /** Searches for the ChatLine belonging to a MsgId. If there are more than one ChatLine with the same msgId,
94 * the first one is returned.
95 * Note that this method performs a binary search, hence it has as complexity of O(log n).
96 * If matchExact is false, and we don't have an exact match for the given msgId, we return the visible line right
97 * above the requested one.
98 * \param msgId The message ID to look for
99 * \param matchExact Whether we find only exact matches
100 * \param ignoreDayChange Whether we ignore day change messages
101 * \return The ChatLine corresponding to the given MsgId
103 ChatLine *chatLine(MsgId msgId, bool matchExact = true, bool ignoreDayChange = true) const;
105 inline ChatLine *lastLine() const { return _lines.count() ? _lines.last() : 0; }
107 inline MarkerLineItem *markerLine() const { return _markerLine; }
109 inline bool isSingleBufferScene() const { return _singleBufferId.isValid(); }
110 inline BufferId singleBufferId() const { return _singleBufferId; }
111 bool containsBuffer(const BufferId &id) const;
113 ColumnHandleItem *firstColumnHandle() const;
114 ColumnHandleItem *secondColumnHandle() const;
116 inline CutoffMode senderCutoffMode() const { return _cutoffMode; }
117 inline void setSenderCutoffMode(CutoffMode mode) { _cutoffMode = mode; }
119 QString selection() const;
120 bool hasSelection() const;
121 bool hasGlobalSelection() const;
122 bool isPosOverSelection(const QPointF &) const;
123 bool isGloballySelecting() const;
124 void initiateDrag(QWidget *source);
126 bool isScrollingAllowed() const;
129 void updateForViewport(qreal width, qreal height);
130 void setWidth(qreal width);
131 void layout(int start, int end, qreal width);
133 void resetColumnWidths();
135 void setMarkerLineVisible(bool visible = true);
136 void setMarkerLine(MsgId msgId = MsgId());
137 void jumpToMarkerLine(bool requestBacklog);
139 // these are used by the chatitems to notify the scene and manage selections
140 void setSelectingItem(ChatItem *item);
141 ChatItem *selectingItem() const { return _selectingItem; }
142 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
143 void clearGlobalSelection();
144 void clearSelection();
145 void selectionToClipboard(QClipboard::Mode = QClipboard::Clipboard);
146 void stringToClipboard(const QString &str, QClipboard::Mode = QClipboard::Clipboard);
148 void webSearchOnSelection();
150 void requestBacklog();
153 void loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect);
154 void clearWebPreview(ChatItem *parentItem = 0);
158 void lastLineChanged(QGraphicsItem *item, qreal offset);
159 void layoutChanged(); // indicates changes to the scenerect due to resizing of the contentsitems
160 void mouseMoveWhileSelecting(const QPointF &scenePos);
163 virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *contextMenuEvent);
164 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
165 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
166 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
167 virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *mouseEvent);
168 virtual void handleClick(Qt::MouseButton button, const QPointF &scenePos);
171 void rowsInserted(const QModelIndex &, int, int);
172 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
173 void dataChanged(const QModelIndex &, const QModelIndex &);
176 void firstHandlePositionChanged(qreal xpos);
177 void secondHandlePositionChanged(qreal xpos);
179 void webPreviewNextStep();
181 void showWebPreviewChanged();
188 void setHandleXLimits();
189 void updateSelection(const QPointF &pos);
193 QAbstractItemModel *_model;
194 QList<ChatLine *> _lines;
195 BufferId _singleBufferId;
197 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
198 // we store the size in a member variable.
200 int _firstLineRow; // the first row to display (aka: not a daychange msg)
201 void updateSceneRect(qreal width);
202 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
203 void updateSceneRect(const QRectF &rect);
204 qreal _viewportHeight;
206 MarkerLineItem *_markerLine;
207 bool _markerLineVisible, _markerLineValid, _markerLineJumpPending;
209 ColumnHandleItem *_firstColHandle, *_secondColHandle;
210 qreal _firstColHandlePos, _secondColHandlePos;
211 int _defaultFirstColHandlePos, _defaultSecondColHandlePos;
212 CutoffMode _cutoffMode;
214 ChatItem *_selectingItem;
215 int _selectionStartCol, _selectionMinCol;
218 int _firstSelectionRow;
222 ClickMode _clickMode;
225 bool _leftButtonPressed;
227 bool _showWebPreview;
229 static const int _webSearchSelectionTextMaxVisible = 24;
240 ChatItem *parentItem;
241 QGraphicsItem *previewItem;
244 PreviewState previewState;
246 WebPreview() : parentItem(0), previewItem(0), previewState(NoPreview) {}
248 WebPreview webPreview;
249 #endif // HAVE_WEBKIT