de.msal.scannerview.ScannerView.java Source code

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Here is the source code for de.msal.scannerview.ScannerView.java

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/*
 * Copyright 2015 MSal
 *
 * 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 de.msal.scannerview;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.support.v4.content.ContextCompat;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.RelativeLayout;

/**
 * @since 17.11.15
 */
public class ScannerView extends RelativeLayout {

    private final Animation mSlideInAnimation;
    private final ImageView mScanner;
    private final BarcodeView mBarcode;

    public ScannerView(Context context) {
        this(context, null);
    }

    public ScannerView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public ScannerView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        LayoutInflater.from(context).inflate(R.layout.scannerview_layout, this, true);

        mSlideInAnimation = AnimationUtils.loadAnimation(context, R.anim.scan_animation);
        mScanner = (ImageView) findViewById(R.id.scanner_lib_scanner);
        mBarcode = (BarcodeView) findViewById(R.id.scanner_lib_barcode);

        TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.ScannerAnimation, 0, 0);
        try {
            // barcode color
            setBarcodeColor(a.getColor(R.styleable.ScannerAnimation_barcodeColor,
                    ContextCompat.getColor(context, R.color.barcode_grey)));
            // scanner color
            setScannerColor(a.getColor(R.styleable.ScannerAnimation_scannerColor,
                    ContextCompat.getColor(context, R.color.scanner_red)));
            // min barcode line width
            setMinBarcodeLineWidth(a.getDimension(R.styleable.ScannerAnimation_minBarcodeLineWidth,
                    getResources().getDimension(R.dimen.minBarcodeLineWidth)));
            // max barcode line width
            setMaxBarcodeLineWidth(a.getDimension(R.styleable.ScannerAnimation_maxBarcodeLineWidth,
                    getResources().getDimension(R.dimen.maxBarcodeLineWidth)));
            // horizontal barcode padding
            float paddingHorizontal = a.getDimension(R.styleable.ScannerAnimation_barcodePaddingHorizontal,
                    getResources().getDimension(R.dimen.barcodePadding));
            setBarcodePaddingHorizontal(paddingHorizontal);
            // vertical barcode padding
            float paddingVertical = a.getDimension(R.styleable.ScannerAnimation_barcodePaddingVertical,
                    getResources().getDimension(R.dimen.barcodePadding));
            setBarcodePaddingVertical(paddingVertical);
        } finally {
            a.recycle();
        }
    }

    /**
     * Start the scan animation.
     */
    public void scan() {
        mScanner.startAnimation(mSlideInAnimation);
    }

    /**
     * Set the color of the barcode lines.
     *
     * @param color the color of the barcode lines.
     */
    public void setBarcodeColor(int color) {
        mBarcode.setBarcodeColor(color);
    }

    /**
     * Set the color of the laser of the scanner.
     *
     * @param color the color of the laser.
     */
    public void setScannerColor(int color) {
        if (mScanner.getDrawable() instanceof ShapeDrawable) {
            ((ShapeDrawable) mScanner.getDrawable()).getPaint().setColor(color);
        } else if (mScanner.getDrawable() instanceof GradientDrawable) {
            ((GradientDrawable) mScanner.getDrawable()).setColor(color);
        }
    }

    /**
     * Set the width of the slimmest allowed barcode line.
     *
     * @param width the width in dp.
     */
    public void setMinBarcodeLineWidth(float width) {
        mBarcode.setMinLineWidth(width);
    }

    /**
     * Set the width of the widest allowed barcode line.
     *
     * @param width the width in dp.
     */
    public void setMaxBarcodeLineWidth(float width) {
        mBarcode.setMaxLineWidth(width);
    }

    /**
     * Sets the horizontal padding of the barcode.
     *
     * @param padding the top and bottom padding in dp
     */
    public void setBarcodePaddingHorizontal(float padding) {
        mBarcode.setPaddingHorizontal(padding);
    }

    /**
     * Sets the vertical padding of the barcode.
     *
     * @param padding the left and right padding in dp
     */
    public void setBarcodePaddingVertical(float padding) {
        mBarcode.setPaddingVertical(padding);
    }

}