From c96955b7678a60d2e681e406cecf4fa7251c8a98 Mon Sep 17 00:00:00 2001
From: Fred Gleason <fredg@paravelsystems.com>
Date: Sat, 20 Mar 2021 16:03:28 -0400
Subject: [PATCH] 2021-03-20 Fred Gleason <fredg@paravelsystems.com> 	*
 Added mouse wheel support to 'RDMarkerView'. 	* Added support for play
 cursor positioning by mouse to 	'RDMarkerView'.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>
---
 ChangeLog              |  4 +++
 lib/rdmarkerdialog.cpp |  2 ++
 lib/rdmarkerview.cpp   | 57 +++++++++++++++++++++++++++---------------
 lib/rdmarkerview.h     |  2 ++
 4 files changed, 45 insertions(+), 20 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 56889093..f1f96623 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -21297,3 +21297,7 @@
 	the 'Fade Up' marker'.
 2021-03-20 Fred Gleason <fredg@paravelsystems.com>
 	* Got digital readouts working in 'RDMarkerPlayer'.
+2021-03-20 Fred Gleason <fredg@paravelsystems.com>
+	* Added mouse wheel support to 'RDMarkerView'.
+	* Added support for play cursor positioning by mouse to
+	'RDMarkerView'.
diff --git a/lib/rdmarkerdialog.cpp b/lib/rdmarkerdialog.cpp
index b02503aa..7699dc4f 100644
--- a/lib/rdmarkerdialog.cpp
+++ b/lib/rdmarkerdialog.cpp
@@ -84,6 +84,8 @@ RDMarkerDialog::RDMarkerDialog(const QString &caption,int card,int port,
   connect(d_marker_view,
 	  SIGNAL(selectedMarkerChanged(RDMarkerHandle::PointerRole)),
 	  d_player,SLOT(setSelectedMarker(RDMarkerHandle::PointerRole)));
+  connect(d_marker_view,SIGNAL(positionClicked(int)),
+	  d_player,SLOT(setPlayPosition(int)));
 
   //
   // Marker Readouts
diff --git a/lib/rdmarkerview.cpp b/lib/rdmarkerview.cpp
index 4735ce36..3de8684a 100644
--- a/lib/rdmarkerview.cpp
+++ b/lib/rdmarkerview.cpp
@@ -22,6 +22,7 @@
 #include <QGraphicsSceneMouseEvent>
 #include <QMouseEvent>
 #include <QPen>
+#include <QScrollBar>
 
 #include "rdescape_string.h"
 #include "rdmarkerview.h"
@@ -584,6 +585,7 @@ void RDMarkerView::save()
 
 void RDMarkerView::clear()
 {
+  d_wheel_angle=0;
   if(d_scene!=NULL) {
     delete d_scene;
     d_scene=NULL;
@@ -878,39 +880,34 @@ void RDMarkerView::resizeEvent(QResizeEvent *e)
 
 void RDMarkerView::mousePressEvent(QMouseEvent *e)
 {
+  int origin=0;
+  int msec=0;
+
   if((e->x()<=LEFT_MARGIN)||(e->x()>d_right_margin)) {
     QWidget::mousePressEvent(e);
     return;
   }
   d_mouse_pos=e->x()-LEFT_MARGIN;
+
+  if(d_marker_menu_used) {
+    d_marker_menu_used=false;
+    return;
+  }
+
   switch(e->button()) {
-    /*
   case Qt::LeftButton:
-    left_button_pressed=true;
-    if(edit_cue_point!=RDEditAudio::Play) {
-      ignore_pause=true;
-      PositionCursor(cursor);
-      ignore_pause=false;
-    }
-    else {
-      ignore_pause=true;
-      rda->cae()->positionPlay(edit_handle,GetTime(cursor));
-      ignore_pause=false;
+    if(d_view->horizontalScrollBar()!=NULL) {
+      origin=d_view->horizontalScrollBar()->value();
     }
+    msec=(int64_t)(d_mouse_pos+origin)*(int64_t)d_shrink_factor*1152000/
+      (int64_t)d_sample_rate;
+    emit positionClicked(msec);
     break;
 
   case Qt::MidButton:
-    center_button_pressed=true;
-    ignore_pause=true;
-    rda->cae()->positionPlay(edit_handle,GetTime(cursor));
-    ignore_pause=false;
     break;
-    */
+
   case Qt::RightButton:
-    if(d_marker_menu_used) {
-      d_marker_menu_used=false;
-      return;
-    }
     d_deleting_roles.clear();
 
     d_main_menu->setGeometry(e->globalX(),e->globalY(),
@@ -925,6 +922,26 @@ void RDMarkerView::mousePressEvent(QMouseEvent *e)
 }
 
 
+void RDMarkerView::wheelEvent(QWheelEvent *e)
+{
+  d_wheel_angle+=e->angleDelta().y();
+  //  printf("Angle: %d\n",d_wheel_angle);
+
+  if(d_wheel_angle>=360) {
+    if(shrinkFactor()>1) {
+      setShrinkFactor(shrinkFactor()/2);
+    }
+    d_wheel_angle=0;
+  }
+  if(d_wheel_angle<=-360) {
+    if(shrinkFactor()<d_max_shrink_factor) {
+      setShrinkFactor(shrinkFactor()*2);
+    }
+    d_wheel_angle=0;
+  }
+}
+
+
 int RDMarkerView::Frame(int msec) const
 {
   return (int)((int64_t)msec*(int64_t)d_sample_rate/(d_shrink_factor*1152000));
diff --git a/lib/rdmarkerview.h b/lib/rdmarkerview.h
index 5b0c4d83..cfa51ff5 100644
--- a/lib/rdmarkerview.h
+++ b/lib/rdmarkerview.h
@@ -124,6 +124,7 @@ class RDMarkerView : public QWidget
   virtual void updateInterlocks();
   void resizeEvent(QResizeEvent *e);
   void mousePressEvent(QMouseEvent *e);
+  void wheelEvent(QWheelEvent *e);
 
  private:
   int Frame(int msec) const;
@@ -167,6 +168,7 @@ class RDMarkerView : public QWidget
   QAction *d_delete_marker_action;
   bool d_marker_menu_used;
   RDMarkerHandle::PointerRole d_selected_marker;
+  int d_wheel_angle;
 };