1 /***************************************************************************
2 * Copyright (C) 2005-2013 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 setMarkerLineVisible(bool visible = true);
134 void setMarkerLine(MsgId msgId = MsgId());
135 void jumpToMarkerLine(bool requestBacklog);
137 // these are used by the chatitems to notify the scene and manage selections
138 void setSelectingItem(ChatItem *item);
139 ChatItem *selectingItem() const { return _selectingItem; }
140 void startGlobalSelection(ChatItem *item, const QPointF &itemPos);
141 void clearGlobalSelection();
142 void clearSelection();
143 void selectionToClipboard(QClipboard::Mode = QClipboard::Clipboard);
144 void stringToClipboard(const QString &str, QClipboard::Mode = QClipboard::Clipboard);
146 void requestBacklog();
149 void loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect);
150 void clearWebPreview(ChatItem *parentItem = 0);
154 void lastLineChanged(QGraphicsItem *item, qreal offset);
155 void layoutChanged(); // indicates changes to the scenerect due to resizing of the contentsitems
156 void mouseMoveWhileSelecting(const QPointF &scenePos);
159 virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *contextMenuEvent);
160 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
161 virtual void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
162 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
163 virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *mouseEvent);
164 virtual void handleClick(Qt::MouseButton button, const QPointF &scenePos);
167 void rowsInserted(const QModelIndex &, int, int);
168 void rowsAboutToBeRemoved(const QModelIndex &, int, int);
169 void dataChanged(const QModelIndex &, const QModelIndex &);
172 void firstHandlePositionChanged(qreal xpos);
173 void secondHandlePositionChanged(qreal xpos);
175 void webPreviewNextStep();
177 void showWebPreviewChanged();
184 void setHandleXLimits();
185 void updateSelection(const QPointF &pos);
189 QAbstractItemModel *_model;
190 QList<ChatLine *> _lines;
191 BufferId _singleBufferId;
193 // calls to QChatScene::sceneRect() are very expensive. As we manage the scenerect ourselves
194 // we store the size in a member variable.
196 int _firstLineRow; // the first row to display (aka: not a daychange msg)
197 void updateSceneRect(qreal width);
198 inline void updateSceneRect() { updateSceneRect(_sceneRect.width()); }
199 void updateSceneRect(const QRectF &rect);
200 qreal _viewportHeight;
202 MarkerLineItem *_markerLine;
203 bool _markerLineVisible, _markerLineValid, _markerLineJumpPending;
205 ColumnHandleItem *_firstColHandle, *_secondColHandle;
206 qreal _firstColHandlePos, _secondColHandlePos;
207 CutoffMode _cutoffMode;
209 ChatItem *_selectingItem;
210 int _selectionStartCol, _selectionMinCol;
213 int _firstSelectionRow;
217 ClickMode _clickMode;
220 bool _leftButtonPressed;
222 bool _showWebPreview;
233 ChatItem *parentItem;
234 QGraphicsItem *previewItem;
237 PreviewState previewState;
239 WebPreview() : parentItem(0), previewItem(0), previewState(NoPreview) {}
241 WebPreview webPreview;
242 #endif // HAVE_WEBKIT