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1、支持真实识别区域比例和识别区域偏移量可配置

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2、对外暴露更多可配置参数
This commit is contained in:
jenly1314
2019-09-24 11:49:13 +08:00
parent db340b3f4d
commit 004bd683a1
10 changed files with 269 additions and 91 deletions
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169
lib/src/main/java/com/king/zxing/ViewfinderView.java
View File

@@ -51,52 +51,141 @@ import androidx.core.content.ContextCompat;
*/
public final class ViewfinderView extends View {
private static final long ANIMATION_DELAY = 15L;
private static final int CURRENT_POINT_OPACITY = 0xA0;
private static final int MAX_RESULT_POINTS = 20;
private static final int POINT_SIZE = 20;
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
private static final int SCANNER_LINE_MOVE_DISTANCE = 6; //扫描线移动距离
private static final int SCANNER_LINE_HEIGHT = 10; //扫描线宽度
/**
* 画笔
*/
private Paint paint;
/**
* 文本画笔
*/
private TextPaint textPaint;
/**
* 扫码框外面遮罩颜色
*/
private int maskColor;
//扫描区域边框颜色
/**
* 扫描区域边框颜色
*/
private int frameColor;
//扫描线颜色
/**
* 扫描线颜色
*/
private int laserColor;
//四角颜色
/**
* 扫码框四角颜色
*/
private int cornerColor;
/**
* 结果点颜色
*/
private int resultPointColor;
/**
* 提示文本与扫码框的边距
*/
private float labelTextPadding;
/**
* 提示文本的位置
*/
private TextLocation labelTextLocation;
//扫描区域提示文本
/**
* 扫描区域提示文本
*/
private String labelText;
//扫描区域提示文本颜色
/**
* 扫描区域提示文本颜色
*/
private int labelTextColor;
/**
* 提示文本字体大小
*/
private float labelTextSize;
/**
* 扫描线开始位置
*/
public int scannerStart = 0;
/**
* 扫描线结束位置
*/
public int scannerEnd = 0;
/**
* 是否显示结果点
*/
private boolean isShowResultPoint;
/**
* 屏幕宽
*/
private int screenWidth;
/**
* 屏幕高
*/
private int screenHeight;
//扫码框宽
/**
* 扫码框宽
*/
private int frameWidth;
//扫码框宽
/**
* 扫码框高
*/
private int frameHeight;
//扫描激光线风格
/**
* 扫描激光线风格
*/
private LaserStyle laserStyle;
/**
* 网格列数
*/
private int gridColumn;
/**
* 网格高度
*/
private int gridHeight;
/**
* 扫码框
*/
private Rect frame;
/**
* 扫描区边角的宽
*/
private int cornerRectWidth;
/**
* 扫描区边角的高
*/
private int cornerRectHeight;
/**
* 扫描线每次移动距离
*/
private int scannerLineMoveDistance;
/**
* 扫描线高度
*/
private int scannerLineHeight;
/**
* 边框线宽度
*/
private int frameLineWidth;
/**
* 扫描动画延迟间隔时间 默认15毫秒
*/
private int scannerAnimationDelay;
/**
* 扫码框占比
*/
private float frameRatio;
private List<ResultPoint> possibleResultPoints;
private List<ResultPoint> lastPossibleResultPoints;
@@ -181,6 +270,13 @@ public final class ViewfinderView extends View {
gridColumn = array.getInt(R.styleable.ViewfinderView_gridColumn,20);
gridHeight = (int)array.getDimension(R.styleable.ViewfinderView_gridHeight,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,40,getResources().getDisplayMetrics()));
cornerRectWidth = (int)array.getDimension(R.styleable.ViewfinderView_cornerRectWidth,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,4,getResources().getDisplayMetrics()));
cornerRectHeight = (int)array.getDimension(R.styleable.ViewfinderView_cornerRectHeight,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,16,getResources().getDisplayMetrics()));
scannerLineMoveDistance = (int)array.getDimension(R.styleable.ViewfinderView_scannerLineMoveDistance,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,2,getResources().getDisplayMetrics()));
scannerLineHeight = (int)array.getDimension(R.styleable.ViewfinderView_scannerLineHeight,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,5,getResources().getDisplayMetrics()));
frameLineWidth = (int)array.getDimension(R.styleable.ViewfinderView_frameLineWidth,TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,1,getResources().getDisplayMetrics()));
scannerAnimationDelay = array.getInteger(R.styleable.ViewfinderView_scannerAnimationDelay,15);
frameRatio = array.getFloat(R.styleable.ViewfinderView_frameRatio,0.625f);
array.recycle();
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
@@ -192,7 +288,7 @@ public final class ViewfinderView extends View {
screenWidth = getDisplayMetrics().widthPixels;
screenHeight = getDisplayMetrics().heightPixels;
int size = (int)(Math.min(screenWidth,screenHeight) * 0.625f);
int size = (int)(Math.min(screenWidth,screenHeight) * frameRatio);
if(frameWidth<=0 || frameWidth > screenWidth){
frameWidth = size;
@@ -233,7 +329,6 @@ public final class ViewfinderView extends View {
frame = new Rect(leftOffset, topOffset, leftOffset + frameWidth, topOffset + frameHeight);
}
@SuppressLint("DrawAllocation")
@Override
public void onDraw(Canvas canvas) {
@@ -243,7 +338,7 @@ public final class ViewfinderView extends View {
if(scannerStart == 0 || scannerEnd == 0) {
scannerStart = frame.top;
scannerEnd = frame.bottom - SCANNER_LINE_HEIGHT;
scannerEnd = frame.bottom - scannerLineHeight;
}
int width = canvas.getWidth();
@@ -263,7 +358,7 @@ public final class ViewfinderView extends View {
drawResultPoint(canvas,frame);
// Request another update at the animation interval, but only repaint the laser line,
// not the entire viewfinder mask.
postInvalidateDelayed(ANIMATION_DELAY,
postInvalidateDelayed(scannerAnimationDelay,
frame.left - POINT_SIZE,
frame.top - POINT_SIZE,
frame.right + POINT_SIZE,
@@ -300,17 +395,17 @@ public final class ViewfinderView extends View {
private void drawCorner(Canvas canvas, Rect frame) {
paint.setColor(cornerColor);
//左上
canvas.drawRect(frame.left, frame.top, frame.left + CORNER_RECT_WIDTH, frame.top + CORNER_RECT_HEIGHT, paint);
canvas.drawRect(frame.left, frame.top, frame.left + CORNER_RECT_HEIGHT, frame.top + CORNER_RECT_WIDTH, paint);
canvas.drawRect(frame.left, frame.top, frame.left + cornerRectWidth, frame.top + cornerRectHeight, paint);
canvas.drawRect(frame.left, frame.top, frame.left + cornerRectHeight, frame.top + cornerRectWidth, paint);
//右上
canvas.drawRect(frame.right - CORNER_RECT_WIDTH, frame.top, frame.right, frame.top + CORNER_RECT_HEIGHT, paint);
canvas.drawRect(frame.right - CORNER_RECT_HEIGHT, frame.top, frame.right, frame.top + CORNER_RECT_WIDTH, paint);
canvas.drawRect(frame.right - cornerRectWidth, frame.top, frame.right, frame.top + cornerRectHeight, paint);
canvas.drawRect(frame.right - cornerRectHeight, frame.top, frame.right, frame.top + cornerRectWidth, paint);
//左下
canvas.drawRect(frame.left, frame.bottom - CORNER_RECT_WIDTH, frame.left + CORNER_RECT_HEIGHT, frame.bottom, paint);
canvas.drawRect(frame.left, frame.bottom - CORNER_RECT_HEIGHT, frame.left + CORNER_RECT_WIDTH, frame.bottom, paint);
canvas.drawRect(frame.left, frame.bottom - cornerRectWidth, frame.left + cornerRectHeight, frame.bottom, paint);
canvas.drawRect(frame.left, frame.bottom - cornerRectHeight, frame.left + cornerRectWidth, frame.bottom, paint);
//右下
canvas.drawRect(frame.right - CORNER_RECT_WIDTH, frame.bottom - CORNER_RECT_HEIGHT, frame.right, frame.bottom, paint);
canvas.drawRect(frame.right - CORNER_RECT_HEIGHT, frame.bottom - CORNER_RECT_WIDTH, frame.right, frame.bottom, paint);
canvas.drawRect(frame.right - cornerRectWidth, frame.bottom - cornerRectHeight, frame.right, frame.bottom, paint);
canvas.drawRect(frame.right - cornerRectHeight, frame.bottom - cornerRectWidth, frame.right, frame.bottom, paint);
}
/**
@@ -342,7 +437,7 @@ public final class ViewfinderView extends View {
//线性渐变
LinearGradient linearGradient = new LinearGradient(
frame.left, scannerStart,
frame.left, scannerStart + SCANNER_LINE_HEIGHT,
frame.left, scannerStart + scannerLineHeight,
shadeColor(laserColor),
laserColor,
Shader.TileMode.MIRROR);
@@ -350,9 +445,9 @@ public final class ViewfinderView extends View {
paint.setShader(linearGradient);
if(scannerStart <= scannerEnd) {
//椭圆
RectF rectF = new RectF(frame.left + 2 * SCANNER_LINE_HEIGHT, scannerStart, frame.right - 2 * SCANNER_LINE_HEIGHT, scannerStart + SCANNER_LINE_HEIGHT);
RectF rectF = new RectF(frame.left + 2 * scannerLineHeight, scannerStart, frame.right - 2 * scannerLineHeight, scannerStart + scannerLineHeight);
canvas.drawOval(rectF, paint);
scannerStart += SCANNER_LINE_MOVE_DISTANCE;
scannerStart += scannerLineMoveDistance;
} else {
scannerStart = frame.top;
}
@@ -388,7 +483,7 @@ public final class ViewfinderView extends View {
}
if(scannerStart<scannerEnd){
scannerStart += SCANNER_LINE_MOVE_DISTANCE;
scannerStart += scannerLineMoveDistance;
} else {
scannerStart = frame.top;
}
@@ -413,10 +508,10 @@ public final class ViewfinderView extends View {
*/
private void drawFrame(Canvas canvas, Rect frame) {
paint.setColor(frameColor);
canvas.drawRect(frame.left, frame.top, frame.right + 1, frame.top + 2, paint);
canvas.drawRect(frame.left, frame.top + 2, frame.left + 2, frame.bottom - 1, paint);
canvas.drawRect(frame.right - 1, frame.top, frame.right + 1, frame.bottom - 1, paint);
canvas.drawRect(frame.left, frame.bottom - 1, frame.right + 1, frame.bottom + 1, paint);
canvas.drawRect(frame.left, frame.top, frame.right, frame.top + frameLineWidth, paint);
canvas.drawRect(frame.left, frame.top, frame.left + frameLineWidth, frame.bottom, paint);
canvas.drawRect(frame.right - frameLineWidth, frame.top, frame.right, frame.bottom, paint);
canvas.drawRect(frame.left, frame.bottom - frameLineWidth, frame.right, frame.bottom, paint);
}
/**
@@ -429,9 +524,9 @@ public final class ViewfinderView extends View {
private void drawExterior(Canvas canvas, Rect frame, int width, int height) {
paint.setColor(maskColor);
canvas.drawRect(0, 0, width, frame.top, paint);
canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, paint);
canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1, paint);
canvas.drawRect(0, frame.bottom + 1, width, height, paint);
canvas.drawRect(0, frame.top, frame.left, frame.bottom, paint);
canvas.drawRect(frame.right, frame.top, width, frame.bottom, paint);
canvas.drawRect(0, frame.bottom, width, height, paint);
}
/**