Initial project commit

[decibelmeter] / src / MeterWidget.vala

diff --git a/src/MeterWidget.vala b/src/MeterWidget.vala
new file mode 100644 (file)
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+/*  Demo Recorder for MAEMO 5
+*   Copyright (C) 2010 Dru Moore <usr@dru-id.co.uk>
+*   This program is free software; you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License version 2,
+*   or (at your option) any later version, as published by the Free
+*   Software Foundation
+*
+*   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.,
+*   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+*/
+
+namespace IdWorks {
+
+public class MeterWidget : Gtk.VBox {
+  
+  private Gtk.Label title_label;
+  private Gtk.Label peak_label;
+  private Gtk.Label decay_label;
+  private DbMonitorWidget meter;  
+  
+  private static const int BORDER_WIDTH = 4;
+  private static const int BORDER_HEIGHT = 4;
+  //private Pango.Layout layout;
+  private static const double MIN_VALUE = 0.0;
+  private static const double MAX_VALUE = 1.5;
+  
+  private static const double ZERO_VALUE = 1.0;
+  
+  private double peak;
+  private double decay;
+  public void set_peak(double val) {
+    this.peak = (MAX_VALUE > val) ? val : MAX_VALUE;
+    this.peak_label.set_text("%02.2f".printf(val));
+    meter.set_peak(Math.pow (10, val / 20));
+  }
+  public void set_decay(double val) {
+    this.decay = (MAX_VALUE > val) ? val : MAX_VALUE;
+    this.decay_label.set_text("%02.2f".printf(val));
+    meter.set_decay(Math.pow (10, val / 20));
+  }
+  private DbMonitorWidget.Layout layout = DbMonitorWidget.Layout.VERTICAL;
+  public void set_layout(DbMonitorWidget.Layout layout) {
+    this.layout = layout;
+    meter.set_layout(layout);
+  }
+  
+  public string title {
+    get {
+      return title_label.get_text();
+    }
+    set {
+      title_label.set_text(value);
+    }
+  }
+  
+  construct {
+    title_label = new Gtk.Label("");
+    title_label.modify_font(Pango.FontDescription.from_string("Sans 20"));
+    title_label.set_padding(4, 2);
+    //title_label.set_alignment(0,0);
+    
+    this.pack_start(title_label, false, true, 4);    
+    
+    meter = new DbMonitorWidget();
+    meter.set_layout(layout);
+    meter.set_peak(0.0);
+    meter.set_decay(0.0);
+    this.pack_start(meter, true, true, 0);
+  
+    Gtk.HBox display = new Gtk.HBox(true, 8);
+    
+    peak_label = new Gtk.Label("0.0");
+    peak_label.modify_font(Pango.FontDescription.from_string("Sans 40"));
+    peak_label.set_padding(4, 2);
+    //peak_label.set_alignment(0,0);
+    decay_label = new Gtk.Label("0.0");
+    decay_label.modify_font(Pango.FontDescription.from_string("Sans 40"));
+    decay_label.set_padding(4, 2);
+    //decay_label.set_alignment(0,0);
+    
+    display.add(peak_label);
+    display.add(decay_label);
+    
+    this.pack_start(display, false, true, 0);    
+    
+    Gtk.HBox display2 = new Gtk.HBox(true, 0);
+    
+    Gtk.Label peak_label2 = new Gtk.Label("dB Peak");
+    peak_label2.modify_font(Pango.FontDescription.from_string("Sans 16"));
+    peak_label2.set_padding(0, 0);
+    //peak_label2.set_alignment(0,0);
+    Gtk.Label decay_label2 = new Gtk.Label("dB Decay");
+    decay_label2.modify_font(Pango.FontDescription.from_string("Sans 16"));
+    decay_label2.set_padding(0, 0);
+    //decay_label2.set_alignment(0,0);
+    
+    display2.add(peak_label2);
+    display2.add(decay_label2);
+    
+    this.pack_start(display2, false, true, 0);    
+    
+  }  
+  
+}
+
+}