1 files changed, 72 insertions, 0 deletions
diff --git a/src/proguard/gui/splash/LinearColor.java b/src/proguard/gui/splash/LinearColor.java
new file mode 100644
index 0000000..3a7674d
--- /dev/null
+++ b/src/proguard/gui/splash/LinearColor.java
@@ -0,0 +1,72 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * 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 2 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, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.gui.splash;
+
+import java.awt.*;
+
+/**
+ * This VariableColor varies linearly with respect to its Timing.
+ *
+ * @author Eric Lafortune
+ */
+public class LinearColor implements VariableColor
+{
+    private final Color  fromValue;
+    private final Color  toValue;
+    private final Timing timing;
+
+    private double cachedTiming = -1.0;
+    private Color  cachedColor;
+
+
+    /**
+     * Creates a new LinearColor.
+     * @param fromValue the value that corresponds to a timing of 0.
+     * @param toValue   the value that corresponds to a timing of 1.
+     * @param timing    the applied timing.
+     */
+    public LinearColor(Color fromValue, Color toValue, Timing timing)
+    {
+        this.fromValue = fromValue;
+        this.toValue   = toValue;
+        this.timing    = timing;
+    }
+
+
+    // Implementation for VariableColor.
+
+    public Color getColor(long time)
+    {
+        double t = timing.getTiming(time);
+        if (t != cachedTiming)
+        {
+            cachedTiming = t;
+            cachedColor =
+                t == 0.0 ? fromValue :
+                t == 1.0 ? toValue   :
+                           new Color((int)(fromValue.getRed()   + t * (toValue.getRed()   - fromValue.getRed())),
+                                     (int)(fromValue.getGreen() + t * (toValue.getGreen() - fromValue.getGreen())),
+                                     (int)(fromValue.getBlue()  + t * (toValue.getBlue()  - fromValue.getBlue())));
+        }
+
+        return cachedColor;
+    }
+}