X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatview.h;h=0f90a668b0b8ca12789856836533f9dacac96bb6;hp=100b311b21bf09ccb2ad382b8857eabb8ff77436;hb=26406e4c1f049a021fd99fd6592389289a510e99;hpb=99bb37d9938f3d88ce7551ded454146359fadc03

diff --git a/src/qtui/chatview.h b/src/qtui/chatview.h
index 100b311b..0f90a668 100644
--- a/src/qtui/chatview.h
+++ b/src/qtui/chatview.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-08 by the Quassel Project                          *
+ *   Copyright (C) 2005-2020 by the Quassel Project                        *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -15,52 +15,123 @@
  *   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_
 
 #include <QGraphicsView>
+#include <QTimer>
 
 #include "abstractbuffercontainer.h"
 
+class AbstractBufferContainer;
 class AbstractUiMsg;
 class Buffer;
 class ChatLine;
 class ChatScene;
-
-class ChatView : public QGraphicsView, public AbstractChatView {
-  Q_OBJECT
-
-  public:
-    ChatView(Buffer *, QWidget *parent = 0);
-    ~ChatView();
-
-    ChatScene *scene() const;
-
-  public slots:
-
-    void clear();
-
-    void prependMsg(AbstractUiMsg *);
-    void appendMsg(AbstractUiMsg *);
-
-    void prependChatLine(ChatLine *);
-    void appendChatLine(ChatLine *);
-    void prependChatLines(QList<ChatLine *>);
-    void appendChatLines(QList<ChatLine *>);
-
-    void setContents(const QList<AbstractUiMsg *> &);
-
-  protected:
-    virtual void resizeEvent(QResizeEvent *event);
-
-  protected slots:
-    virtual void sceneHeightChanged(int height);
-
-  private:
-    ChatScene *_scene;
+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();
+
+public slots:
+    inline virtual void clear() {}
+    void zoomIn();
+    void zoomOut();
+    void zoomOriginal();
+
+    void setMarkerLineVisible(bool visible = true);
+    void setMarkerLine(MsgId msgId);
+    void jumpToMarkerLine(bool requestBacklog);
+
+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;
+
+protected slots:
+    virtual void verticalScrollbarChanged(int);
+
+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);
+
+private:
+    void init(MessageFilter* filter);
+
+    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