Reduce sensitivity of the channel gallery view.

Higher scroll speeds are reduced stronger.

application/res/layout/conversations.xml

@@ -48,7 +48,7 @@ along with Yaaic.  If not, see <http://www.gnu.org/licenses/>.
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:layout_weight="1">
-        <Gallery
+        <org.yaaic.model.ChannelList
            android:id="@+id/deck"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"

application/src/org/yaaic/model/ChannelList.java

@@ -0,0 +1,25 @@
+package org.yaaic.model;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.widget.Gallery;
+
+public class ChannelList extends Gallery
+{
+    public ChannelList(Context context, AttributeSet attrs)
+    {
+        super(context, attrs);
+    }
+
+    @Override
+    public boolean onFling (MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
+    {
+        /* Reduce sensitivity based on f(x) = x * 0.925^y with y = (|x/500| - 1)
+         * The goal is to reduce higher velocities stronger than low ones
+         * 500 is the base, i.e. it will not reduced. */
+        final float fexp = Math.abs(velocityX / 500.0f) - 1;
+        velocityX *= Math.pow(0.925, fexp);
+        return super.onFling(e1, e2, velocityX, velocityY);
+    }
+}