qtui: Enable song info popup on mouseover.

src/qtui/playlist-qt.cc

@@ -24,9 +24,8 @@
 
 #include <libaudcore/audstrings.h>
 #include <libaudcore/drct.h>
-#include <libaudcore/hook.h>
-#include <libaudcore/playlist.h>
 #include <libaudcore/runtime.h>
+#include <libaudqt/libaudqt.h>
 
 #include "playlist-qt.h"
 #include "playlist_header.h"
@@ -57,6 +56,7 @@ PlaylistWidget::PlaylistWidget (QWidget * parent, Playlist playlist) :
     setFrameShape (QFrame::NoFrame);
     setSelectionMode (ExtendedSelection);
     setDragDropMode (DragDrop);
+    setMouseTracking (true);
 
     updateSettings ();
     header->updateColumns ();
@@ -149,6 +149,25 @@ void PlaylistWidget::mouseDoubleClickEvent (QMouseEvent * event)
         playCurrentIndex ();
 }
 
+void PlaylistWidget::mouseMoveEvent (QMouseEvent * event)
+{
+    int row = indexToRow (indexAt (event->pos ()));
+
+    if (row < 0)
+    {
+        hidePopup ();
+        return;
+    }
+
+    if (aud_get_bool (nullptr, "show_filepopup_for_tuple") && m_popup_pos != row)
+        triggerPopup (row);
+}
+
+void PlaylistWidget::leaveEvent (QEvent *)
+{
+    hidePopup ();
+}
+
 /* Since Qt doesn't support both DragDrop and InternalMove at once,
  * this hack is needed to set the drag icon to "move" for internal drags. */
 void PlaylistWidget::dragMoveEvent (QDragMoveEvent * event)
@@ -398,6 +417,28 @@ void PlaylistWidget::moveFocus (int distance)
     setCurrentIndex (proxyModel->index (row, 0));
 }
 
+void PlaylistWidget::showPopup ()
+{
+    audqt::infopopup_show (m_playlist, m_popup_pos);
+}
+
+void PlaylistWidget::triggerPopup (int pos)
+{
+    audqt::infopopup_hide ();
+
+    m_popup_pos = pos;
+    m_popup_timer.queue (aud_get_int (nullptr, "filepopup_delay") * 100,
+     aud::obj_member<PlaylistWidget, & PlaylistWidget::showPopup>, this);
+}
+
+void PlaylistWidget::hidePopup ()
+{
+    audqt::infopopup_hide ();
+
+    m_popup_pos = -1;
+    m_popup_timer.stop ();
+}
+
 void PlaylistWidget::updateSettings ()
 {
     setHeaderHidden (! aud_get_bool ("qtui", "playlist_headers"));

src/qtui/playlist-qt.h

@@ -23,6 +23,7 @@
 #include <QTreeView>
 
 #include <libaudcore/hook.h>
+#include <libaudcore/mainloop.h>
 #include <libaudcore/playlist.h>
 
 class PlaylistModel;
@@ -60,6 +61,9 @@ class PlaylistWidget : public QTreeView
     bool inUpdate = false;
     int firstVisibleColumn = 0;
 
+    int m_popup_pos = -1;
+    QueuedFunc m_popup_timer;
+
     QModelIndex rowToIndex (int row);
     int indexToRow (const QModelIndex & index);
 
@@ -70,11 +74,17 @@ class PlaylistWidget : public QTreeView
     void contextMenuEvent (QContextMenuEvent * event);
     void keyPressEvent (QKeyEvent * event);
     void mouseDoubleClickEvent (QMouseEvent * event);
+    void mouseMoveEvent (QMouseEvent * event);
+    void leaveEvent (QEvent *);
     void dragMoveEvent (QDragMoveEvent * event);
     void dropEvent (QDropEvent * event);
     void currentChanged (const QModelIndex & current, const QModelIndex & previous);
     void selectionChanged (const QItemSelection & selected, const QItemSelection & deselected);
 
+    void showPopup ();
+    void triggerPopup (int pos);
+    void hidePopup ();
+
     void updateSettings ();
 
     const HookReceiver<PlaylistWidget>