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/***************************************************************************
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* Copyright (C) 2005/06 by The Quassel Team *
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* devel@quassel-irc.org *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef _CHATWIDGET_H_
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#define _CHATWIDGET_H_
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//!\brief Scroll area showing part of the chat messages for a given buffer.
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/** The contents of the scroll area, i.e. a widget of type ChatWidgetContents,
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* needs to be provided by calling init(). We don't create this widget ourselves, because
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* while a ChatWidget will be destroyed and recreated quite often (for example when switching
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* buffers), there ususally is no need to re-render its content every time (which can be time-consuming).
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* Before a ChatWidget is destroyed, it gives up its ownership of its contents, referring responsibility
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* back to where it came from.
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* Because we use this as a custom widget in Qt Designer, we cannot use a constructor that takes custom
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* parameters. Instead, it is mandatory to call init() before using this widget.
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class ChatWidget : public QAbstractScrollArea {
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ChatWidget(QWidget *parent = 0);
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void init(QString net, QString buf);
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virtual QSize sizeHint() const;
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void prependChatLine(ChatLine *);
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void appendChatLine(ChatLine *);
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void prependChatLines(QList<ChatLine *>);
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void appendChatLines(QList<ChatLine *>);
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void setContents(QList<ChatLine *>);
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virtual void resizeEvent(QResizeEvent *event);
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virtual void paintEvent(QPaintEvent * event);
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virtual void mousePressEvent(QMouseEvent *event);
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virtual void mouseReleaseEvent(QMouseEvent *event);
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virtual void mouseMoveEvent(QMouseEvent *event);
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virtual void mouseDoubleClickEvent(QMouseEvent *event);
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void scrollBarAction(int);
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void scrollBarValChanged(int);
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void ensureVisible(int line);
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void handleScrollTimer();
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QString networkName, bufferName;
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enum SelectionMode { NoSelection, TextSelected, LinesSelected };
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enum MouseMode { Normal, Pressed, DragTsSep, DragTextSep, MarkText, MarkLines };
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enum MousePos { None, OverTsSep, OverTextSep, OverUrl };
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MouseMode dragStartMode;
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SelectionMode selectionMode;
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int selectionStart, selectionEnd, selectionLine;
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int bottomLine, bottomLineOffset;
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QList<ChatLine *> lines;
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QPoint pointerPosition;
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int tsGrabPos; ///< X-Position for changing the timestamp width
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void computePositions();
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void adjustScrollBar();
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int yToLineIdx(qreal y);
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void clearSelection();
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QString selectionToString();
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void handleMouseMoveEvent(const QPoint &pos);
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//FIXME: chatline doku
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//!\brief Containing the layout and providing the rendering of a single message.
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/** A ChatLine takes a Message object,
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* formats it (by turning the various message types into a human-readable form and afterwards pumping it through
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* our Style engine), and stores it as a number of QTextLayouts representing the three fields of a chat line
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* (timestamp, sender and text). These layouts already include any rendering information such as font,
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* color, or selected characters. By calling layout(), they can be quickly layouted to fit a given set of field widths.
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* Afterwards, they can quickly be painted whenever necessary.
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* By separating the complex and slow task of interpreting and formatting Message objects (which happens exactly once
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* per message) from the actual layouting and painting, we gain a lot of speed compared to the standard Qt rendering
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class ChatLine : public QObject {
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ChatLine(Message message);
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qreal layout(qreal tsWidth, qreal nickWidth, qreal textWidth);
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qreal height() { return hght; }
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int posToCursor(QPointF pos);
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void draw(QPainter *p, const QPointF &pos);
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enum SelectionMode { None, Partial, Full };
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void setSelection(SelectionMode, int start = 0, int end = 0);
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QDateTime timeStamp();
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QUrl getUrl(int pos);
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qreal tsWidth, senderWidth, textWidth;
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Style::FormattedString tsFormatted, senderFormatted, textFormatted;
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QTextCharFormat format;
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QVector<int> charPos;
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QVector<int> charWidths;
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QVector<int> charHeights;
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QVector<int> charUrlIdx;
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QList<FormatRange> tsFormat, senderFormat, textFormat;
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QList<LineLayout> lineLayouts;
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SelectionMode selectionMode;
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int selectionStart, selectionEnd;
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void formatMsg(Message);
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void precomputeLine();
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QList<FormatRange> calcFormatRanges(const Style::FormattedString &, QTextLayout::FormatRange additional = QTextLayout::FormatRange());
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QList<Message> messages;
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QList<ChatLine *> lines;
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Q_DECLARE_METATYPE(LayoutTask);
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class LayoutThread : public QThread {
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virtual ~LayoutThread();
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void processTask(LayoutTask task);
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void taskProcessed(LayoutTask task);
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QList<LayoutTask> queue;
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QWaitCondition condition;
added
removed
gui/chatwidget.h
