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Android example source code file (PaintDrawable.java)

This example Android source code file (PaintDrawable.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, attributeset, content, drawing, graphics, override, paint, paintdrawable, resources, roundrectshape, shapedrawable, typedarray, ui, util, xmlpullparser

The PaintDrawable.java Android example source code

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * 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 android.graphics.drawable;

import android.graphics.drawable.shapes.RoundRectShape;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.util.AttributeSet;

import org.xmlpull.v1.XmlPullParser;

/**
 * Drawable that draws its bounds in the given paint, with optional
 * rounded corners.
*/
public class PaintDrawable extends ShapeDrawable {

    public PaintDrawable() {
    }

    public PaintDrawable(int color) {
        getPaint().setColor(color);
    }
    
    /**
     * Specify radius for the corners of the rectangle. If this is > 0, then the
     * drawable is drawn in a round-rectangle, rather than a rectangle.
     * @param radius the radius for the corners of the rectangle
     */
    public void setCornerRadius(float radius) {
        float[] radii = null;
        if (radius > 0) {
            radii = new float[8];
            for (int i = 0; i < 8; i++) {
                radii[i] = radius;
            }
        }
        setCornerRadii(radii);
    }
    
    /**
     * Specify radii for each of the 4 corners. For each corner, the array
     * contains 2 values, [X_radius, Y_radius]. The corners are ordered
     * top-left, top-right, bottom-right, bottom-left
     * @param radii the x and y radii of the corners
     */
    public void setCornerRadii(float[] radii) {
        if (radii == null) {
            if (getShape() != null) {
                setShape(null);
            }
        } else {
            setShape(new RoundRectShape(radii, null, null));
        }
    }

    @Override
    protected boolean inflateTag(String name, Resources r, XmlPullParser parser,
                                 AttributeSet attrs) {
        if (name.equals("corners")) {
            TypedArray a = r.obtainAttributes(attrs,
                                        com.android.internal.R.styleable.DrawableCorners);
            int radius = a.getDimensionPixelSize(
                                com.android.internal.R.styleable.DrawableCorners_radius, 0);
            setCornerRadius(radius);
            
            // now check of they have any per-corner radii
            
            int topLeftRadius = a.getDimensionPixelSize(
                    com.android.internal.R.styleable.DrawableCorners_topLeftRadius, radius);
            int topRightRadius = a.getDimensionPixelSize(
                    com.android.internal.R.styleable.DrawableCorners_topRightRadius, radius);
            int bottomLeftRadius = a.getDimensionPixelSize(
                com.android.internal.R.styleable.DrawableCorners_bottomLeftRadius, radius);
            int bottomRightRadius = a.getDimensionPixelSize(
                com.android.internal.R.styleable.DrawableCorners_bottomRightRadius, radius);

            if (topLeftRadius != radius || topRightRadius != radius ||
                    bottomLeftRadius != radius || bottomRightRadius != radius) {
                setCornerRadii(new float[] {
                               topLeftRadius, topLeftRadius,
                               topRightRadius, topRightRadius,
                               bottomLeftRadius, bottomLeftRadius,
                               bottomRightRadius, bottomRightRadius
                               });
            }
            a.recycle();
            return true;
        }
        return super.inflateTag(name, r, parser, attrs);
    }
}

Other Android examples (source code examples)

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