Android Open Source - longhorn Border Relative Layout

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License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2012 Santiago Valdarrama
 * //from w  w  w. ja va  2 s  .c  o  m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at 
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.svpino.longhorn.layouts;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RectShape;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

import com.svpino.longhorn.artifacts.Extensions;

public class BorderRelativeLayout extends RelativeLayout {

  private ShapeDrawable shapeDrawable;
  private int border;
  private Paint paint;

  public BorderRelativeLayout(Context context) {
    super(context);
  }

  public BorderRelativeLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.border = Extensions.dpToPixels(getResources(), 3);

    this.shapeDrawable = new ShapeDrawable(new RectShape());

    this.paint = this.shapeDrawable.getPaint();
    this.paint.setStrokeWidth(Extensions.dpToPixels(getResources(), 1));
    this.paint.setColor(0xf2f2f2ff);
    this.paint.setStyle(Style.STROKE);
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    updateDrawableBounds();

    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }

  @Override
  protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    this.shapeDrawable.draw(canvas);
  }

  @Override
  protected void onLayout(boolean changed, int l, int t, int r, int b) {
    super.onLayout(changed, l, t, r, b);
    this.shapeDrawable.setBounds(this.border, this.border, getWidth() - this.border, getHeight() - this.border);
  }

  private void updateDrawableBounds() {
    this.shapeDrawable.setBounds(this.border, this.border, getWidth() - this.border, getHeight() - this.border);
  }

}

Java Source Code List