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RenderScriptIntrinsic / src / com.example.android.renderscriptintrinsic /

ThumbnailRadioButton.java

       
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        /*
       
       
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        * Copyright (C) 2014 The Android Open Source Project
       
       
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        *
       
       
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        * Licensed under the Apache License, Version 2.0 (the "License");
       
       
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        * you may not use this file except in compliance with the License.
       
       
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        * You may obtain a copy of the License at
       
       
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        *
       
       
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        *      http://www.apache.org/licenses/LICENSE-2.0
       
       
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        *
       
       
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        * Unless required by applicable law or agreed to in writing, software
       
       
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        * distributed under the License is distributed on an "AS IS" BASIS,
       
       
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        * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       
       
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        * See the License for the specific language governing permissions and
       
       
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        * limitations under the License.
       
       
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        */
       
       
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        package com.example.android.renderscriptintrinsic;
       
       
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        import android.graphics.Bitmap;
       
       
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        import android.graphics.Color;
       
       
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        import android.graphics.Paint;
       
       
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        import android.graphics.drawable.BitmapDrawable;
       
       
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        import android.graphics.drawable.Drawable;
       
       
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        import android.graphics.drawable.LayerDrawable;
       
       
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        import android.graphics.drawable.ShapeDrawable;
       
       
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        import android.graphics.drawable.StateListDrawable;
       
       
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        import android.graphics.drawable.shapes.RectShape;
       
       
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        import android.os.Build;
       
       
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        import android.view.Gravity;
       
       
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        import android.widget.RadioButton;
       
       
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        import android.content.Context;
       
       
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        import android.util.AttributeSet;
       
       
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        /*
       
       
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        A button with Thumbnail which extends Radio Button.
       
       
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        The widget override a background drawable of Radio Button with a StateList Drawable.
       
       
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        Each state has a LayerDrawable with a Thumbnail image and a Focus rectangle.
       
       
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        It's using original Radio Buttons text as a label, because LayerDrawable showed some issues with Canvas.drawText().
       
       
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        */
       
       
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        public class ThumbnailRadioButton extends RadioButton {
       
       
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        public ThumbnailRadioButton(Context context) {
       
       
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        super(context);
       
       
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        init();
       
       
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        }
       
       
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        public ThumbnailRadioButton(Context context, AttributeSet attrs) {
       
       
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        super(context, attrs);
       
       
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        init();
       
       
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        }
       
       
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        public ThumbnailRadioButton(Context context, AttributeSet attrs, int defStyle) {
       
       
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        super(context, attrs, defStyle);
       
       
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        init();
       
       
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        }
       
       
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        private void init() {
       
       
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        setButtonDrawable(android.R.color.transparent);
       
       
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        }
       
       
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        public void setThumbnail(Bitmap bitmap) {
       
       
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        //Bitmap drawable
       
       
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        BitmapDrawable bmp = new BitmapDrawable(getResources(), bitmap);
       
       
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        bmp.setGravity(Gravity.CENTER);
       
       
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        int strokeWidth = 24;
       
       
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        //Checked state
       
       
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        ShapeDrawable rectChecked = new ShapeDrawable(new RectShape());
       
       
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        rectChecked.getPaint().setColor(0xFFFFFFFF);
       
       
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        rectChecked.getPaint().setStyle(Paint.Style.STROKE);
       
       
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        rectChecked.getPaint().setStrokeWidth(strokeWidth);
       
       
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        rectChecked.setIntrinsicWidth(bitmap.getWidth() + strokeWidth);
       
       
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        rectChecked.setIntrinsicHeight(bitmap.getHeight() + strokeWidth);
       
       
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        Drawable drawableArray[] = new Drawable[]{bmp, rectChecked};
       
       
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        LayerDrawable layerChecked = new LayerDrawable(drawableArray);
       
       
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        //Unchecked state
       
       
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        ShapeDrawable rectUnchecked = new ShapeDrawable(new RectShape());
       
       
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        rectUnchecked.getPaint().setColor(0x0);
       
       
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        rectUnchecked.getPaint().setStyle(Paint.Style.STROKE);
       
       
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        rectUnchecked.getPaint().setStrokeWidth(strokeWidth);
       
       
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        rectUnchecked.setIntrinsicWidth(bitmap.getWidth() + strokeWidth);
       
       
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        rectUnchecked.setIntrinsicHeight(bitmap.getHeight() + strokeWidth);
       
       
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        Drawable drawableArray2[] = new Drawable[]{bmp, rectUnchecked};
       
       
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        LayerDrawable layerUnchecked = new LayerDrawable(drawableArray2);
       
       
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        //Statelist drawable
       
       
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        StateListDrawable states = new StateListDrawable();
       
       
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        states.addState(new int[]{android.R.attr.state_checked},
       
       
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        layerChecked);
       
       
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        states.addState(new int[]{},
       
       
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        layerUnchecked);
       
       
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        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
       
       
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        setBackground(states);
       
       
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        else
       
       
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        setBackgroundDrawable(states);
       
       
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        //Offset text to center/bottom of the checkbox
       
       
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        Paint paint = new Paint();
       
       
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        paint.setAntiAlias(true);
       
       
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        paint.setTextSize(getTextSize());
       
       
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        paint.setTypeface(getTypeface());
       
       
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        float w = paint.measureText(getText(), 0, getText().length());
       
       
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        setPadding(getPaddingLeft() + (int) ((bitmap.getWidth() - w) / 2.f + .5f),
       
       
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        getPaddingTop() + (int) (bitmap.getHeight() * 0.70),
       
       
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        getPaddingRight(),
       
       
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        getPaddingBottom());
       
       
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        setShadowLayer(5, 0, 0, Color.BLACK);
       
       
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        }
       
       
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        }