tdf#87808 Add missing tooltips to Media Playback toolbar

For the Position and the Volume sliders

Change-Id: Ie7eee332b05e9a6cfc8165cf7b7b59695c58b458
Reviewed-on: https://gerrit.libreoffice.org/43571Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

avmedia/inc/strings.hrc

@@ -34,6 +34,8 @@
 #define AVMEDIA_STR_ZOOM_100        NC_("AVMEDIA_STR_ZOOM_100", "100%")
 #define AVMEDIA_STR_ZOOM_200        NC_("AVMEDIA_STR_ZOOM_200", "200%")
 #define AVMEDIA_STR_ZOOM_FIT        NC_("AVMEDIA_STR_ZOOM_FIT", "Scaled")
+#define AVMEDIA_STR_VOLUME          NC_("AVMEDIA_STR_VOLUME", "Volume")
+#define AVMEDIA_STR_POSITION        NC_("AVMEDIA_STR_POSITION", "Position")
 #define AVMEDIA_STR_MEDIAPLAYER     NC_("AVMEDIA_STR_MEDIAPLAYER", "Media Player")
 #define AVMEDIA_MEDIA_PATH          NC_("AVMEDIA_MEDIA_PATH", "Media Path")
 #define AVMEDIA_MEDIA_PATH_DEFAULT  NC_("AVMEDIA_MEDIA_PATH_DEFAULT", "No Media Selected")

avmedia/source/framework/MediaControlBase.cxx

@@ -129,10 +129,12 @@ void MediaControlBase::InitializeWidgets()
 
     mpVolumeSlider->SetRange( Range( AVMEDIA_DB_RANGE, 0 ) );
     mpVolumeSlider->SetUpdateMode( true );
+    mpVolumeSlider->SetQuickHelpText( AvmResId( AVMEDIA_STR_VOLUME ));
     mpVolumeSlider->SetHelpId( HID_AVMEDIA_VOLUMESLIDER );
 
     mpTimeSlider->SetRange( Range( 0, AVMEDIA_TIME_RANGE ) );
     mpTimeSlider->SetUpdateMode( true );
+    mpTimeSlider->SetQuickHelpText( AvmResId( AVMEDIA_STR_POSITION ));
     mpTimeSlider->SetStyle(WB_HORZ | WB_DRAG | WB_3DLOOK);
     mpTimeSlider->SetScrollTypeSet(true);
 }