summaryrefslogtreecommitdiff
path: root/muse2/awl/midivolentry.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'muse2/awl/midivolentry.cpp')
-rw-r--r--muse2/awl/midivolentry.cpp50
1 files changed, 50 insertions, 0 deletions
diff --git a/muse2/awl/midivolentry.cpp b/muse2/awl/midivolentry.cpp
new file mode 100644
index 00000000..0b74afcc
--- /dev/null
+++ b/muse2/awl/midivolentry.cpp
@@ -0,0 +1,50 @@
+//=============================================================================
+// Awl
+// Audio Widget Library
+// $Id:$
+//
+// Copyright (C) 2002-2006 by Werner Schweer and others
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#include "fastlog.h"
+#include "midivolentry.h"
+
+namespace Awl {
+
+//---------------------------------------------------------
+// MidiVolEntry
+//---------------------------------------------------------
+
+MidiVolEntry::MidiVolEntry(QWidget* parent)
+ : FloatEntry(parent)
+ {
+ _max = 127;
+ setRange(-98.0f, 0.0f);
+ setSpecialText(tr("off"));
+ setSuffix(tr("db"));
+ setFrame(true);
+ setPrecision(0);
+ }
+
+//---------------------------------------------------------
+// setValue
+//---------------------------------------------------------
+
+void MidiVolEntry::setValue(double v)
+ {
+ FloatEntry::setValue(-fast_log10(double(_max*_max)/(v*v))*20.0f);
+ }
+}
+