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| package com.geyek.widget;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
/**
* Created by LiHuan on 09/10/2016.
*/
public class LeftChart extends View {
private SimpleChart mSimpleChart;
private float mWidth;
private float mHeight;
private float maxY;
private float mTextSpace;
private Paint mPaint = new Paint();
private float mYLablepadding;
private float mYLableSize;
public LeftChart(Context context) {
super(context);
}
public LeftChart(Context context, AttributeSet attrs) {
super(context, attrs);
}
public LeftChart(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@
Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
mWidth = getMeasuredWidth();
mHeight = getMeasuredHeight();
}
@
Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
}
@
Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
update();
if (mSimpleChart == null) return; //如果绑定为空,则不显示了
float chartHeight = mSimpleChart.getChartHeight();
mPaint.setStrokeWidth(2);
canvas.drawLine(mWidth, 0, mWidth, mSimpleChart.getChartHeight(), mPaint);
int row = mSimpleChart.getRow();
float h = chartHeight / row;
while (true) {
if (mTextSpace + mYLablepadding & gt; mWidth) {
float textSize = mPaint.getTextSize();
mPaint.setTextSize(textSize - 1);
mTextSpace = mPaint.measureText(maxY + "");
} else {
break;
}
}
for (int i = 0; i & lt; = row; i++) {
if (i == 0) {
String v = mFormatYLableListener == null ? "0" : mFormatYLableListener.format(0);
canvas.drawText(v, mWidth - mYLablepadding - mPaint.measureText(v), mSimpleChart.getChartHeight() + mYLableSize / 3, mPaint);
} else if (i == row) {
String v = mFormatYLableListener == null ? (int) maxY + "" : mFormatYLableListener.format((int) maxY);
canvas.drawText(v, mWidth - mYLablepadding - mPaint.measureText(v), mYLableSize / 5 * 4, mPaint);
} else {
String v = mFormatYLableListener == null ? (int)(maxY / row * (row - i)) + "" : mFormatYLableListener.format((int)(maxY / row * (row - i)));
canvas.drawText(v, mWidth - mYLablepadding - mPaint.measureText(v), h * i + mYLableSize / 3, mPaint);
}
}
}
public void bindSimpleChar(SimpleChart simpleChart) {
mSimpleChart = simpleChart;
update();
}
public void update() {
if (mSimpleChart == null) return;
maxY = mSimpleChart.getMaxY();
mYLableSize = mSimpleChart.getXLableSize();
mYLablepadding = mSimpleChart.getXlablePadding();
mPaint.setTextSize(mYLableSize);
mTextSpace = mPaint.measureText(maxY + "");
}
/*public void setPreLable(String preLable) {
this.mPreLable = preLable;
}*/
public interface FormatYLableListener {
public String format(float yLable);
}
public FormatYLableListener mFormatYLableListener;
public void setFormatYLable(FormatYLableListener l) {
mFormatYLableListener = l;
}
}
图表坐标Bean类
package com.geyek.widget;
/**
* Created by LiHuan on 10/09/16.
*/
public class ChartPoint {
public float valueY;
public String lableY;
public String lableX;
public int pointColor;
public float hintXoffset;
public float hintYoffset;
}
|
