/***************************************************************************
- * Copyright (C) 2005-07 by the Quassel IRC Team *
+ * Copyright (C) 2005-2020 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
+ * (at your option) version 3. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
-#ifndef _CHATVIEW_H_
-#define _CHATVIEW_H_
+#ifndef CHATVIEW_H_
+#define CHATVIEW_H_
#include <QGraphicsView>
+#include <QTimer>
+#include "abstractbuffercontainer.h"
+
+class AbstractBufferContainer;
class AbstractUiMsg;
class Buffer;
class ChatLine;
class ChatScene;
+class MessageFilter;
+class QMenu;
+
+class ChatView : public QGraphicsView, public AbstractChatView
+{
+ Q_OBJECT
+
+public:
+ ChatView(MessageFilter*, QWidget* parent = nullptr);
+ ChatView(BufferId bufferId, QWidget* parent = nullptr);
+
+ MsgId lastMsgId() const override;
+ virtual MsgId lastVisibleMsgId() const;
+ inline AbstractBufferContainer* bufferContainer() const { return _bufferContainer; }
+ inline void setBufferContainer(AbstractBufferContainer* c) { _bufferContainer = c; }
+
+ inline ChatScene* scene() const { return _scene; }
+
+ //! Return a set of ChatLines currently visible in the view
+ /** \param mode How partially visible ChatLines are handled
+ * \return A set of visible ChatLines
+ */
+ QSet<ChatLine*> visibleChatLines(Qt::ItemSelectionMode mode = Qt::ContainsItemBoundingRect) const;
+
+ //! Return a sorted list of ChatLines currently visible in the view
+ /** \param mode How partially visible ChatLines are handled
+ * \return A list of visible ChatLines sorted by row
+ * \note If the order of ChatLines does not matter, use visibleChatLines() instead
+ */
+ QList<ChatLine*> visibleChatLinesSorted(Qt::ItemSelectionMode mode = Qt::ContainsItemBoundingRect) const;
+
+ //! Return the last fully visible ChatLine in this view
+ /** Using this method more efficient than calling visibleChatLinesSorted() and taking its last element.
+ * \return The last fully visible ChatLine in the view
+ */
+ ChatLine* lastVisibleChatLine(bool ignoreDayChange = false) const;
+
+ virtual void addActionsToMenu(QMenu*, const QPointF& pos);
+
+ //! Tell the view that this ChatLine has cached data
+ /** ChatLines cache some layout data that should be cleared as soon as it's no
+ * longer visible. A ChatLine caching data registers itself with this method to
+ * tell the view about it. The view will call ChatLine::clearCache() when
+ * appropriate.
+ * \param line The ChatLine having cached data
+ */
+ void setHasCache(ChatLine* line, bool hasCache = true);
+
+ /**
+ * Requests backlog if the scrollbar is not currently visible
+ *
+ * Use this whenever trying to scroll the backlog to try to ensure some text is visible. If the
+ * backlog does not have additional messages or those messages are filtered out, the scrollbar
+ * might remain invisible.
+ *
+ * @return True if the scrollbar isn't visible and a backlog request was made, otherwise false
+ */
+ bool requestBacklogForScroll();
-class ChatView : public QGraphicsView {
- Q_OBJECT
+public slots:
+ inline virtual void clear() {}
+ void zoomIn();
+ void zoomOut();
+ void zoomOriginal();
- public:
- ChatView(Buffer *, QWidget *parent = 0);
- ~ChatView();
+ void setMarkerLineVisible(bool visible = true);
+ void setMarkerLine(MsgId msgId);
+ void jumpToMarkerLine(bool requestBacklog);
- ChatScene *scene() const;
+protected:
+ bool event(QEvent* event) override;
+ bool eventFilter(QObject* watched, QEvent* event) override;
+ void resizeEvent(QResizeEvent* event) override;
+ void scrollContentsBy(int dx, int dy) override;
- public slots:
-/*
- void clear();
+protected slots:
+ virtual void verticalScrollbarChanged(int);
- void prependMsg(AbstractUiMsg *);
- void appendMsg(AbstractUiMsg *);
+private slots:
+ void lastLineChanged(QGraphicsItem* chatLine, qreal offset);
+ void adjustSceneRect();
+ void checkChatLineCaches();
+ void mouseMoveWhileSelecting(const QPointF& scenePos);
+ void scrollTimerTimeout();
+ void invalidateFilter();
+ void markerLineSet(BufferId buffer, MsgId msg);
- void prependChatLine(ChatLine *);
- void appendChatLine(ChatLine *);
- void prependChatLines(QList<ChatLine *>);
- void appendChatLines(QList<ChatLine *>);
+private:
+ void init(MessageFilter* filter);
- void setContents(QList<ChatLine *>);
-*/
- private:
- ChatScene *_scene;
+ AbstractBufferContainer* _bufferContainer;
+ ChatScene* _scene;
+ int _lastScrollbarPos;
+ qreal _currentScaleFactor;
+ QTimer _scrollTimer;
+ int _scrollOffset;
+ bool _invalidateFilter;
+ QSet<ChatLine*> _linesWithCache;
+ bool _firstTouchUpdateHappened = false;
+ /// Workaround: If true, backlog has been requested before the vertical scrollbar became visible
+ bool _backlogRequestedBeforeScrollable{false};
};
#endif
projects / quassel.git / blobdiff