[Seq-cvs-commit] SF.net SVN: seq:[1361] showeq/trunk/src

[<cn...@us...>]

Revision: 1361
          http://sourceforge.net/p/seq/svn/1361
Author:   cn187
Date:     2023-03-15 18:27:24 +0000 (Wed, 15 Mar 2023)
Log Message:
-----------
Add ability to zoom map via mouse wheel

Modified Paths:
--------------
    showeq/trunk/src/map.cpp
    showeq/trunk/src/map.h

Modified: showeq/trunk/src/map.cpp
===================================================================
--- showeq/trunk/src/map.cpp	2023-03-15 18:27:13 UTC (rev 1360)
+++ showeq/trunk/src/map.cpp	2023-03-15 18:27:24 UTC (rev 1361)
@@ -2077,6 +2077,36 @@
   }
 }
 
+
+void Map::wheelEvent( QWheelEvent * ev)
+{
+    int deltaY = 0;
+
+#if (QT_VERSION >= QT_VERSION_CHECK(5,0,0))
+    deltaY = ev->angleDelta().y();
+#else
+    deltaY = ev->delta();
+#endif
+
+    //y is verticle, x is horizontal
+    //we only handle vertical scroll for zoom in/out.
+    //ignore anything else so it can be handled by parent.
+    if (deltaY > 0)
+    {
+        setZoom(zoom() + 1);
+        ev->accept();
+        return;
+    }
+    else if (deltaY < 0)
+    {
+        setZoom(zoom() - 1);
+        ev->accept();
+        return;
+    }
+
+    ev->ignore();
+}
+
 void Map::zoomIn()
 {
 #ifdef DEBUGMAP

Modified: showeq/trunk/src/map.h
===================================================================
--- showeq/trunk/src/map.h	2023-03-15 18:27:13 UTC (rev 1360)
+++ showeq/trunk/src/map.h	2023-03-15 18:27:24 UTC (rev 1361)
@@ -578,6 +578,7 @@
    void mouseMoveEvent( QMouseEvent* );
    void mouseReleaseEvent( QMouseEvent *);
    void mouseDoubleClickEvent( QMouseEvent *);
+   void wheelEvent( QWheelEvent *);
    void resizeEvent (QResizeEvent *);
 
    void paintMap (QPainter *);

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.