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BarcodeGraphic.java
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BarcodeGraphic.java
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/*
* Copyright (C) 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 com.fuse.qreader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
//import android.util.Log;
import com.google.android.gms.vision.barcode.Barcode;
/**
* Graphic instance for rendering barcode position, size, and ID within an associated graphic
* overlay view.
*/
public class BarcodeGraphic extends GraphicOverlay.Graphic {
private int mId;
private static final String TAG = "Barcode-reader";
private static final int COLOR_CHOICES[] = {
Color.BLUE,
Color.CYAN,
Color.GREEN
};
private static int mCurrentColorIndex = 0;
private Paint mRectPaint;
private Paint mTextPaint;
private volatile Barcode mBarcode;
BarcodeGraphic(GraphicOverlay overlay) {
super(overlay);
mCurrentColorIndex = (mCurrentColorIndex + 1) % COLOR_CHOICES.length;
final int selectedColor = COLOR_CHOICES[mCurrentColorIndex];
mRectPaint = new Paint();
mRectPaint.setColor(selectedColor);
mRectPaint.setStyle(Paint.Style.STROKE);
mRectPaint.setStrokeWidth(4.0f);
mTextPaint = new Paint();
mTextPaint.setColor(selectedColor);
mTextPaint.setTextSize(36.0f);
}
public int getId() {
return mId;
}
public void setId(int id) {
this.mId = id;
}
public Barcode getBarcode() {
return mBarcode;
}
/**
* Updates the barcode instance from the detection of the most recent frame. Invalidates the
* relevant portions of the overlay to trigger a redraw.
*/
void updateItem(Barcode barcode) {
mBarcode = barcode;
postInvalidate();
}
/**
* Draws the barcode annotations for position, size, and raw value on the supplied canvas.
*/
@Override
public void draw(Canvas canvas) {
Barcode barcode = mBarcode;
if (barcode == null) {
return;
}
// Draws the bounding box around the barcode.
RectF rect = new RectF(barcode.getBoundingBox());
rect.left = translateX(rect.left);
rect.top = translateY(rect.top);
rect.right = translateX(rect.right);
rect.bottom = translateY(rect.bottom);
canvas.drawRect(rect, mRectPaint);
}
}