Wrapper for background drawables: NonScalingBackgroundDrawable

src/org/yaaic/layout/NonScalingBackgroundDrawable.java

@@ -0,0 +1,89 @@
+/*
+Yaaic - Yet Another Android IRC Client
+
+Copyright 2009-2010 Sebastian Kaspari
+
+This file is part of Yaaic.
+
+Yaaic 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.
+
+Yaaic 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 Yaaic.  If not, see <http://www.gnu.org/licenses/>.
+*/
+package org.yaaic.layout;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.drawable.Drawable;
+import android.view.View;
+
+/**
+ * Wrapper for background drawables that should not be scaled
+ * 
+ * @author Sebastian Kaspari <sebastian@yaaic.org>
+ */
+public  class NonScalingBackgroundDrawable extends Drawable {
+    private View view;
+    private Drawable drawable;
+    
+    /**
+     * Create a new non scaling background drawable
+     * 
+     * @param context
+     * @param view
+     * @param resource
+     */
+    public NonScalingBackgroundDrawable(Context context, View view, int resource)
+    {
+         this.view = view;
+         this.drawable = context.getResources().getDrawable(resource);
+    }
+
+    /**
+     * Draw the background drawable
+     */
+    public void draw(Canvas canvas)
+    {
+    	int left = (view.getWidth() / 2) - (drawable.getIntrinsicWidth() / 2);
+    	int top = (view.getHeight() / 2) - (drawable.getIntrinsicHeight() / 2);
+    	int right = left + drawable.getIntrinsicWidth();
+    	int bottom = top + drawable.getIntrinsicHeight();
+
+    	drawable.setBounds(left, top, right, bottom);
+         
+    	drawable.draw(canvas);
+    }
+
+    /**
+     * Get the opacity
+     */
+    public int getOpacity()
+    {
+         return drawable.getOpacity();
+    }
+
+    /**
+     * Set the alpha
+     */
+    public void setAlpha(int alpha)
+    {
+    	drawable.setAlpha(alpha);
+    }
+
+    /**
+     * Set the color filter
+     */
+    public void setColorFilter(ColorFilter cf)
+    {
+    	drawable.setColorFilter(cf);
+    }
+}