自定义坐标系图.doc

mw_shl_code=java,truepackage com.example.sql;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Path;import android.graphics.PointF;import android.util.AttributeSet;import android.view.View;public class Coordinates extends View private Paint mPaint;/ 标题private boolean mTitle;private String Title;private int TitleHeight;private PointF TitlePoint;/ 边距private int PL, PR, PB, PT;/ 横轴纵轴长度。private float XPix, YPix;private float XScale, YScale;private int XLen, YLen;/ 横轴纵轴标识和单位private String XPrickle, YPrickle;private String XName = X, YName = Y;/ 参考坐标private PointF Point1 = new PointF();private PointF mPointBaseValue = new PointF();/ 交叉点坐标中心点private PointF Pointp = new PointF();public Coordinates(Context context) super(context, null);init();public Coordinates(Context context, AttributeSet attrs) super(context, attrs);init();private void init() mPaint = new Paint();mPaint.setColor(Color.BLACK);/ 设置边距setCoordinatesPadding(0, 0, 0, 0);/ 设置标题setTitleHeight(20);setTitleName(标题);mTitle = true;TitlePoint = new PointF(PL, TitleHeight);public void setTitleHeight(int height) TitleHeight = height;/ 设置图表标题public void setTitleName(String titleName) Title = titleName;/ 设置边距public void setCoordinatesPadding(int leftPad, int rightPad, int topPad,int bottomPad) PL = leftPad + 40;PR = rightPad + 40;PT = topPad + 10;PB = bottomPad + 40;/ 设置坐标名称和单位public void setAxisNamePrickleXY(String xName, String xPrickle,String yName, String yPrickle) XName = xName;XPrickle = xPrickle;YName = yName;YPrickle = yPrickle;/ 中心坐标和坐标轴圆心所在的点。public void onSizeChanged(int w, int h, int oldw, int oldh) XLen = w - PL - PR;YLen = h - PB - PT - (mTitle ? TitleHeight : 0);Pointp.set(PL, h - PB);Point1.set(XLen / 2 + Pointp.x, Pointp.y - YLen / 2);super.onSizeChanged(w, h, oldw, oldh);public void onDraw(Canvas canvas) super.onDraw(canvas);if (canvas = null) return;canvas.drawColor(Color.WHITE);/ 画标题canvas.drawText(Title, TitlePoint.x, TitlePoint.y, mPaint);/ X轴上标签canvas.drawText(80, 138, 350, mPaint);canvas.drawText(85, 188, 350, mPaint);canvas.drawText(90, 258, 350, mPaint);canvas.drawText(100, 308, 350, mPaint);canvas.drawText(110, 358, 350, mPaint);/ canvas.drawText(, 238, 350, mPaint);/ Y轴上标签canvas.drawText(120, 8, 290, mPaint);canvas.drawText(130, 8, 240, mPaint);canvas.drawText(140, 8, 190, mPaint);canvas.drawText(160, 8, 140, mPaint);canvas.drawText(180, 8, 90, mPaint);/ canvas.drawText(, 8, 160, mPaint);/ 柱状图标签canvas.drawText(Normal BP, 40, 285, mPaint);canvas.drawText(High-normal BP, 40, 235, mPaint);canvas.drawText(Mild Hypertension, 40, 185, mPaint);canvas.drawText(Moderate Hypertension, 40, 135, mPaint);canvas.drawText(Severe Hypertension, 40, 85, mPaint);/ 画X轴canvas.drawLine(Pointp.x, Pointp.y, Pointp.x + XLen, Pointp.y, mPaint);/ 画Y轴canvas.drawLine(Pointp.x, Pointp.y, Pointp.x, Pointp.y - YLen, mPaint);/ 画X轴箭头float x = Pointp.x + XLen, y = Pointp.y;drawjiantou(canvas, new PointF(x, y), new PointF(x - 10, y - 5),new PointF(x - 10, y + 5);canvas.drawText(XName, x - 15, y + 18, mPaint);canvas.drawText(（ + XPrickle + ）, x - 15, y + 18 + 12, mPaint);Paint paint = new Paint();/ 画Y轴箭头x = Pointp.x;y = Pointp.y - YLen;drawjiantou(canvas, new PointF(x, y), new PointF(x - 5, y + 10),new PointF(x + 5, y + 10);canvas.drawText(YName + （ + YPrickle + ）, x + 12, y + 15, mPaint);/ 填充一paint.setStyle(Paint.Style.FILL);paint.setColor(Color.BLUE);canvas.drawRect(41, 285, 240, 335, paint);/ canvas.drawRect：canvas.drawRect(left, top, right, bottom, paint)/ left：是矩形距离左边的X轴,top：是矩形距离上边的Y轴,right：是矩形距离右边的X轴,/ bottom：是矩形距离下边的Y轴/ 填充二paint.setStyle(Paint.Style.FILL);paint.setColor(Color.RED);canvas.drawRect(41, 285, 180, 235, paint);/ 填充三paint.setStyle(Paint.Style.FILL);paint.setColor(Color.YELLOW);canvas.drawRect(41, 235, 160, 185, paint);/ 填充四paint.setStyle(Paint.Style.FILL);paint.setColor(Color.GREEN);canvas.drawRect(41, 185, 140, 135, paint);/ 用于画坐标轴的箭头,三角形private void drawjiantou(Canvas canvas, PointF p1, PointF p2, PointF p3) Path path = new Path();path