From 9f8afb520bcb3102da7b5c050fd601b4a0a29e13 Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Sun, 26 May 2013 17:43:32 +0200
Subject: [PATCH] Add knob controller panel.

---
 .../pterodactylus/sonitus/gui/ControlledPane.java  |  3 +
 .../net/pterodactylus/sonitus/gui/KnobPanel.java   | 70 ++++++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 src/main/java/net/pterodactylus/sonitus/gui/KnobPanel.java

diff --git a/src/main/java/net/pterodactylus/sonitus/gui/ControlledPane.java b/src/main/java/net/pterodactylus/sonitus/gui/ControlledPane.java
index 76fb8d0..19b9fac 100644
--- a/src/main/java/net/pterodactylus/sonitus/gui/ControlledPane.java
+++ b/src/main/java/net/pterodactylus/sonitus/gui/ControlledPane.java
@@ -27,6 +27,7 @@ import javax.swing.JPanel;
 import net.pterodactylus.sonitus.data.Controlled;
 import net.pterodactylus.sonitus.data.Controller;
 import net.pterodactylus.sonitus.data.controller.Fader;
+import net.pterodactylus.sonitus.data.controller.Knob;
 import net.pterodactylus.sonitus.data.controller.Switch;
 
 /**
@@ -54,6 +55,8 @@ public class ControlledPane extends JPanel {
 				add(new FaderPanel((Fader) controller), new GridBagConstraints(1, controllerIndex, 1, 1, 1.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(6, 0, 0, 0), 0, 0));
 			} else if (controller instanceof Switch) {
 				add(new SwitchPanel((Switch) controller), new GridBagConstraints(1, controllerIndex, 1, 1, 1.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(6, 0, 0, 0), 0, 0));
+			} else if (controller instanceof Knob) {
+				add(new KnobPanel((Knob) controller), new GridBagConstraints(1, controllerIndex, 1, 1, 1.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(6, 0, 0, 0), 0, 0));
 			}
 			++controllerIndex;
 		}
diff --git a/src/main/java/net/pterodactylus/sonitus/gui/KnobPanel.java b/src/main/java/net/pterodactylus/sonitus/gui/KnobPanel.java
new file mode 100644
index 0000000..1901566
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sonitus/gui/KnobPanel.java
@@ -0,0 +1,70 @@
+/*
+ * Sonitus - KnobPanel.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sonitus.gui;
+
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import javax.swing.DefaultBoundedRangeModel;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JSlider;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+
+import net.pterodactylus.sonitus.data.controller.Knob;
+
+/**
+ * A panel that displays a {@link Knob}. A knob panel is very similar to a
+ * {@link FaderPanel}, it just has added tick marks at the center of the
+ * slider.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class KnobPanel extends JPanel {
+
+	/**
+	 * Creates a new knob panel.
+	 *
+	 * @param knob
+	 * 		The knob being controlled
+	 */
+	public KnobPanel(final Knob knob) {
+		super(new GridBagLayout());
+
+		/* create knob labels. */
+		add(new JLabel("-1"), new GridBagConstraints(0, 0, 1, 1, 0, 0, GridBagConstraints.NORTHEAST, GridBagConstraints.NONE, new Insets(0, 6, 0, 0), 0, 0));
+		add(new JLabel("1"), new GridBagConstraints(2, 0, 1, 1, 0, 0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(0, 6, 0, 0), 0, 0));
+
+		/* create fader. */
+		JSlider slider = new JSlider(new DefaultBoundedRangeModel((int) (knob.value() * 65536), 0, -65536, 65536));
+		slider.addChangeListener(new ChangeListener() {
+
+			@Override
+			public void stateChanged(ChangeEvent changeEvent) {
+				knob.value(((JSlider) changeEvent.getSource()).getValue() / 65536.0);
+			}
+		});
+		if (knob.centered()) {
+			slider.setMajorTickSpacing(65536);
+			slider.setPaintTicks(true);
+		}
+		add(slider, new GridBagConstraints(1, 0, 1, 1, 1.0, 0.0, GridBagConstraints.NORTHWEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
+	}
+
+}
-- 
2.7.4