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新增支持自定义扫码框宽高

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jenly1314
2018-12-29 16:30:51 +08:00
parent 3f0ea02a9a
commit 73ba5a80d4
6 changed files with 102 additions and 57 deletions
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139
lib/src/main/java/com/king/zxing/ViewfinderView.java
View File

@@ -22,7 +22,6 @@ import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.Rect;
@@ -35,6 +34,7 @@ import android.text.StaticLayout;
import android.text.TextPaint;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
@@ -56,7 +56,7 @@ public final class ViewfinderView extends View {
private static final long ANIMATION_DELAY = 20L;
private static final int CURRENT_POINT_OPACITY = 0xA0;
private static final int MAX_RESULT_POINTS = 20;
private static final int POINT_SIZE = 6;
private static final int POINT_SIZE = 8;
private static final int CORNER_RECT_WIDTH = 8; //扫描区边角的宽
private static final int CORNER_RECT_HEIGHT = 40; //扫描区边角的高
@@ -76,7 +76,7 @@ public final class ViewfinderView extends View {
//四角颜色
private final int cornerColor;
private final int resultPointColor;
private int scannerAlpha;
// private int scannerAlpha;
private final float labelTextPadding;
private TextLocation labelTextLocation;
//扫描区域提示文本
@@ -86,7 +86,15 @@ public final class ViewfinderView extends View {
private float labelTextSize;
public int scannerStart = 0;
public int scannerEnd = 0;
private boolean isShowResultPoint = false;
private boolean isShowResultPoint;
private int screenWidth;
private int screenHeight;
//扫码框宽
private int frameWidth;
//扫码框宽
private int frameHeight;
private List<ResultPoint> possibleResultPoints;
private List<ResultPoint> lastPossibleResultPoints;
@@ -132,13 +140,25 @@ public final class ViewfinderView extends View {
labelTextPadding = array.getDimension(R.styleable.ViewfinderView_labelTextPadding,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,24,getResources().getDisplayMetrics()));
labelTextLocation = TextLocation.getFromInt(array.getInt(R.styleable.ViewfinderView_labelTextLocation,0));
isShowResultPoint = array.getBoolean(R.styleable.ViewfinderView_showResultPoint,false);
frameWidth = array.getDimensionPixelSize(R.styleable.ViewfinderView_frameWidth,0);
frameHeight = array.getDimensionPixelSize(R.styleable.ViewfinderView_frameHeight,0);
array.recycle();
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
scannerAlpha = 0;
// scannerAlpha = 0;
possibleResultPoints = new ArrayList<>(5);
lastPossibleResultPoints = null;
screenWidth = getDisplayMetrics().widthPixels;
screenHeight = getDisplayMetrics().heightPixels;
}
private DisplayMetrics getDisplayMetrics(){
return getResources().getDisplayMetrics();
}
public void setCameraManager(CameraManager cameraManager) {
@@ -164,12 +184,22 @@ public final class ViewfinderView extends View {
@SuppressLint("DrawAllocation")
@Override
public void onDraw(Canvas canvas) {
if (cameraManager == null) {
return; // not ready yet, early draw before done configuring
Rect frame;
if(frameWidth > 0 && frameWidth < screenWidth && frameHeight > 0 && frameHeight < screenHeight){
//扫码框默认居中，当自定义扫码框宽高时，支持利用内距偏移
int leftOffset = (screenWidth - frameWidth) / 2 + getPaddingLeft() - getPaddingRight();
int topOffset = (screenHeight - frameHeight) / 2 + getPaddingTop() - getPaddingBottom();
frame = new Rect(leftOffset, topOffset, leftOffset + frameWidth, topOffset + frameHeight);
}else{
if (cameraManager == null) {
return; // not ready yet, early draw before done configuring
}
frame = cameraManager.getFramingRect();
}
Rect frame = cameraManager.getFramingRect();
Rect previewFrame = cameraManager.getFramingRectInPreview();
if (frame == null || previewFrame == null) {
if (frame == null) {
return;
}
@@ -202,46 +232,8 @@ public final class ViewfinderView extends View {
drawLaserScanner(canvas,frame);
//绘制提示信息
drawTextInfo(canvas, frame);
float scaleX = frame.width() / (float) previewFrame.width();
float scaleY = frame.height() / (float) previewFrame.height();
List<ResultPoint> currentPossible = possibleResultPoints;
List<ResultPoint> currentLast = lastPossibleResultPoints;
int frameLeft = frame.left;
int frameTop = frame.top;
if (currentPossible.isEmpty()) {
lastPossibleResultPoints = null;
} else {
possibleResultPoints = new ArrayList<>(5);
lastPossibleResultPoints = currentPossible;
paint.setAlpha(CURRENT_POINT_OPACITY);
paint.setColor(resultPointColor);
synchronized (currentPossible) {
for (ResultPoint point : currentPossible) {
if(point.getX()<frame.left || point.getX()>frame.right ||
point.getY()<frame.top || point.getY()>frame.bottom){
continue;
}
canvas.drawCircle(frameLeft + (int) (point.getX() * scaleX),
frameTop + (int) (point.getY() * scaleY),
POINT_SIZE, paint);
}
}
}
if (currentLast != null) {
paint.setAlpha(CURRENT_POINT_OPACITY / 2);
paint.setColor(resultPointColor);
synchronized (currentLast) {
float radius = POINT_SIZE / 2.0f;
for (ResultPoint point : currentLast) {
canvas.drawCircle(frameLeft + (int) (point.getX() * scaleX),
frameTop + (int) (point.getY() * scaleY),
radius, paint);
}
}
}
//绘制扫码结果点
drawResultPoint(canvas,frame);
// Request another update at the animation interval, but only repaint the laser line,
// not the entire viewfinder mask.
postInvalidateDelayed(ANIMATION_DELAY,
@@ -335,6 +327,49 @@ public final class ViewfinderView extends View {
canvas.drawRect(0, frame.bottom + 1, width, height, paint);
}
//绘制扫码结果点
private void drawResultPoint(Canvas canvas,Rect frame){
if(!isShowResultPoint){
return;
}
List<ResultPoint> currentPossible = possibleResultPoints;
List<ResultPoint> currentLast = lastPossibleResultPoints;
if (currentPossible.isEmpty()) {
lastPossibleResultPoints = null;
} else {
possibleResultPoints = new ArrayList<>(5);
lastPossibleResultPoints = currentPossible;
paint.setAlpha(CURRENT_POINT_OPACITY);
paint.setColor(resultPointColor);
synchronized (currentPossible) {
for (ResultPoint point : currentPossible) {
if(point.getX()<frame.left || point.getX()>frame.right ||
point.getY()<frame.top || point.getY()>frame.bottom){
continue;
}
canvas.drawCircle( point.getX(),point.getY(), POINT_SIZE, paint);
}
}
}
if (currentLast != null) {
paint.setAlpha(CURRENT_POINT_OPACITY / 2);
paint.setColor(resultPointColor);
synchronized (currentLast) {
float radius = POINT_SIZE / 2.0f;
for (ResultPoint point : currentLast) {
if(point.getX()<frame.left || point.getX()>frame.right ||
point.getY()<frame.top || point.getY()>frame.bottom){
continue;
}
canvas.drawCircle( point.getX(),point.getY(), radius, paint);
}
}
}
}
public void drawViewfinder() {
Bitmap resultBitmap = this.resultBitmap;
this.resultBitmap = null;
@@ -348,6 +383,10 @@ public final class ViewfinderView extends View {
return isShowResultPoint;
}
/**
* 设置显示结果点
* @param showResultPoint 是否显示结果点
*/
public void setShowResultPoint(boolean showResultPoint) {
isShowResultPoint = showResultPoint;
}