/** 绘制key */
protected void renderKey(Canvas canvas) {
if (!getKeyVisible()) return;
DrawHelper dw = new DrawHelper();
float textHeight = dw.getPaintFontHeight(getKeyPaint());
float rectWidth = 2 * textHeight;
float currentX = 0.0f;
float currentY = 0.0f;
if (!isVerticalScreen()) // 横屏
{
getKeyPaint().setTextAlign(Align.RIGHT);
currentX = plotArea.getRight();
currentY = this.plotArea.getTop() + textHeight;
} else {
getKeyPaint().setTextAlign(Align.LEFT);
currentX = plotArea.getLeft();
currentY = this.plotArea.getBottom();
}
int totalTextWidth = 0;
for (RadarData cData : mDataSet) {
getKeyPaint().setColor(cData.getLineColor());
if (!isVerticalScreen()) // 横屏
{
canvas.drawRect(
currentX, currentY, currentX - rectWidth, currentY - textHeight, getKeyPaint());
canvas.drawText(cData.getLineKey(), currentX - rectWidth, currentY, getKeyPaint());
currentY = MathHelper.getInstance().add(currentY, textHeight);
} else { // 竖屏
int keyTextWidth = dw.getTextWidth(getKeyPaint(), cData.getLineKey());
totalTextWidth += keyTextWidth;
if (totalTextWidth > plotArea.getWidth()) {
currentY += textHeight;
currentX = plotArea.getLeft();
totalTextWidth = 0;
}
canvas.drawRect(
currentX, currentY, currentX + rectWidth, currentY - textHeight, getKeyPaint());
canvas.drawText(cData.getLineKey(), currentX + rectWidth, currentY, getKeyPaint());
currentX = MathHelper.getInstance().add(currentX, rectWidth + keyTextWidth + 5);
}
}
}
/**
* 绘制柱形顶部标签
*
* @param text 内容
* @param x x坐标
* @param y y坐标
* @param canvas 画布
*/
protected void drawBarItemLabel(String text, float x, float y, Canvas canvas) {
// 在柱形的顶端显示上柱形的当前值
if (getItemLabelsVisible()) {
DrawHelper.getInstance()
.drawRotateText(text, x, y, getItemLabelRotateAgent(), canvas, getItemLabelPaint());
}
}
/** 得到所有相关的交叉点坐标 */
private void calcAllPoint() {
float cirX = plotArea.getCenterX();
float cirY = plotArea.getCenterY();
// 标签个数决定角的个数
int labelsCount = getPlotAgentNumber();
// 轴线tick总数
int dataAxisTickCount = getAxisTickCount();
// 扇形角度,依标签个数决定
float pAngle = MathHelper.getInstance().div(360f, labelsCount); // 72f;
// 270为中轴线所处圆心角
float initOffsetAgent = MathHelper.getInstance().sub(270f, pAngle);
// 依标签总个数算出环数,依数据刻度数决定
float avgRadius = MathHelper.getInstance().div(getRadius(), (dataAxisTickCount - 1));
// 当前半径
float curRadius = 0.0f;
// 当前圆心角偏移量
float offsetAgent = 0.0f;
// 坐标与圆心角
mArrayDotX = new Float[dataAxisTickCount][labelsCount];
mArrayDotY = new Float[dataAxisTickCount][labelsCount];
mArrayLabelAgent = new Float[labelsCount];
mArrayLabelX = new Float[dataAxisTickCount][labelsCount];
mArrayLabelY = new Float[dataAxisTickCount][labelsCount];
int labelHeight = DrawHelper.getInstance().getPaintFontHeight(getLabelPaint());
float labelRadius = this.getRadius() + labelHeight;
float currAgent = 0.0f;
for (int i = 0; i < dataAxisTickCount; i++) // 数据轴
{
curRadius = avgRadius * i; // 当前半径长度，依此算出各节点坐标
for (int j = 0; j < labelsCount; j++) {
offsetAgent = MathHelper.getInstance().add(initOffsetAgent, pAngle * j);
currAgent = MathHelper.getInstance().add(offsetAgent, pAngle);
// 计算位置
MathHelper.getInstance().calcArcEndPointXY(cirX, cirY, curRadius, currAgent);
// 点的位置
mArrayDotX[i][j] = MathHelper.getInstance().getPosX();
mArrayDotY[i][j] = MathHelper.getInstance().getPosY();
// 记下每个标签对应的圆心角
if (0 == i) mArrayLabelAgent[j] = currAgent;
// 外围标签位置
MathHelper.getInstance().calcArcEndPointXY(cirX, cirY, labelRadius, currAgent);
mArrayLabelX[i][j] = MathHelper.getInstance().getPosX();
mArrayLabelY[i][j] = MathHelper.getInstance().getPosY();
} // end for labelCount
} // end for datacount
}
/**
* 绘制数据连接线
*
* @param canvas 画布
* @param lineData 数据集类
* @param arrayDataX x坐标
* @param arrayDataY y坐标
*/
private void renderDataLine(
Canvas canvas, RadarData lineData, Float[] arrayDataX, Float[] arrayDataY) {
float startX = 0.0f, startY = 0.0f;
float initX = 0.0f, initY = 0.0f;
for (int p = 0; p < arrayDataX.length; p++) {
if (0 == p) {
initX = startX = arrayDataX[p];
initY = startY = arrayDataY[p];
} else {
DrawHelper.getInstance()
.drawLine(
lineData.getLineStyle(),
startX,
startY,
arrayDataX[p],
arrayDataY[p],
canvas,
lineData.getPlotLine().getLinePaint());
startX = arrayDataX[p];
startY = arrayDataY[p];
}
// 绘制点及对应的标签
renderDotAndLabel(canvas, lineData, arrayDataX[p], arrayDataY[p], p);
}
// 收尾
DrawHelper.getInstance()
.drawLine(
lineData.getLineStyle(),
startX,
startY,
initX,
initY,
canvas,
lineData.getPlotLine().getLinePaint());
}
public PointF renderLabelLine(
String text,
float itemAngle,
float cirX,
float cirY,
float radius,
float calcAngle,
Canvas canvas,
Paint paintLabel,
boolean showLabel,
PlotLabelRender plotLabel) {
float pointRadius = 0.0f;
if (getLinePointStyle() == XEnum.LabelLinePoint.END
|| getLinePointStyle() == XEnum.LabelLinePoint.ALL) pointRadius = getRadius();
// 显示在扇形的外部
// 1/4处为起始点
float calcRadius = MathHelper.getInstance().sub(radius, radius / mBrokenStartPoint);
MathHelper.getInstance().calcArcEndPointXY(cirX, cirY, calcRadius, calcAngle);
float startX = MathHelper.getInstance().getPosX();
float startY = MathHelper.getInstance().getPosY();
// 延长原来半径的一半在外面
calcRadius = radius / 2f;
MathHelper.getInstance().calcArcEndPointXY(startX, startY, calcRadius, calcAngle);
float stopX = MathHelper.getInstance().getPosX();
float stopY = MathHelper.getInstance().getPosY();
float borkenline = getBrokenLine(); // 折线长度
float endX = 0.0f, endLabelX = 0.0f;
if (Float.compare(stopX, cirX) == 0) { // 位于中间竖线上
if (Float.compare(stopY, cirY) == 1) // 中点上方,左折线
{
paintLabel.setTextAlign(Align.LEFT);
endX = stopX + borkenline; // + pointRadius;
endLabelX = endX + pointRadius;
} else { // 中点下方,右折线
paintLabel.setTextAlign(Align.RIGHT);
endX = stopX - borkenline;
endLabelX = endX - pointRadius;
}
} else if (Float.compare(stopY, cirY) == 0) { // 中线横向两端
endX = stopX;
if (Float.compare(stopX, cirX) == 0 || Float.compare(stopX, cirX) == -1) // 左边
{
paintLabel.setTextAlign(Align.RIGHT);
endLabelX = endX - pointRadius;
} else {
paintLabel.setTextAlign(Align.LEFT);
endLabelX = endX + pointRadius;
}
} else if (Float.compare(stopX + borkenline, cirX) == 1) // 右边
{
paintLabel.setTextAlign(Align.LEFT);
endX = stopX + borkenline;
endLabelX = endX + pointRadius;
} else if (Float.compare(stopX - borkenline, cirX) == -1) // 左边
{
paintLabel.setTextAlign(Align.RIGHT);
endX = stopX - borkenline;
endLabelX = endX - pointRadius;
} else {
endLabelX = endX = stopX;
paintLabel.setTextAlign(Align.CENTER);
}
if (mIsBZLine) {
// 绘制贝塞尔曲线
drawBZLine(startX, startY, stopX, stopY, endX, canvas);
} else {
// 转折线
drawBrokenLine(startX, startY, stopX, stopY, endX, canvas);
}
// 标签点NONE,BEGIN,END,ALL
drawPoint(startX, startY, stopX, stopY, endX, pointRadius, canvas);
if (showLabel) // 标签
{
if (null == plotLabel) {
DrawHelper.getInstance()
.drawRotateText(text, endLabelX, stopY, itemAngle, canvas, paintLabel);
} else {
plotLabel.drawLabel(canvas, paintLabel, text, endLabelX, stopY, itemAngle);
}
}
return (new PointF(endLabelX, stopY));
}
@Override
protected boolean renderPlot(Canvas canvas) {
// 数据源
List<PieData> chartDataSource = this.getDataSource();
if (null == chartDataSource) {
Log.e(TAG, "数据源为空.");
return false;
}
// 计算中心点坐标
float cirX = plotArea.getCenterX();
float cirY = plotArea.getCenterY();
float radius = getRadius();
// 确定去饼图范围
float arcLeft = sub(cirX, radius);
float arcTop = sub(cirY, radius);
float arcRight = add(cirX, radius);
float arcBottom = add(cirY, radius);
RectF arcRF0 = new RectF(arcLeft, arcTop, arcRight, arcBottom);
// 画笔初始化
Paint paintArc = new Paint();
paintArc.setAntiAlias(true);
float initOffsetAngle = mOffsetAngle;
float offsetAngle = initOffsetAngle;
// 3D
float currentAngle = 0.0f;
for (int i = 0; i < mRender3DLevel; i++) {
canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.translate(0, mRender3DLevel - i);
for (int j = 0; j < chartDataSource.size(); j++) {
PieData cData = chartDataSource.get(j);
paintArc.setColor(cData.getSliceColor());
currentAngle = cData.getSliceAngle();
if (Float.compare(currentAngle, 0.0f) == 0 || Float.compare(currentAngle, 0.0f) == -1)
continue;
if (cData.getSelected()) // 指定突出哪个块
{
// 偏移圆心点位置(默认偏移半径的1/10)
float newRadius = div(radius, SELECTED_OFFSET);
// 计算百分比标签
MathHelper.getInstance()
.calcArcEndPointXY(cirX, cirY, newRadius, add(offsetAngle, div(currentAngle, 2f)));
float arcLeft2 = sub(MathHelper.getInstance().getPosX(), radius);
float arcTop2 = sub(MathHelper.getInstance().getPosY(), radius);
float arcRight2 = add(MathHelper.getInstance().getPosX(), radius);
float arcBottom2 = add(MathHelper.getInstance().getPosY(), radius);
RectF arcRF1 = new RectF(arcLeft2, arcTop2, arcRight2, arcBottom2);
canvas.drawArc(arcRF1, offsetAngle, currentAngle, true, paintArc);
} else {
canvas.drawArc(arcRF0, offsetAngle, currentAngle, true, paintArc);
}
// 下次的起始角度
offsetAngle = add(offsetAngle, currentAngle);
// k += 2;
}
canvas.restore();
offsetAngle = initOffsetAngle;
}
// 平面
currentAngle = 0.0f;
offsetAngle = initOffsetAngle;
for (int j = 0; j < chartDataSource.size(); j++) {
PieData cData = chartDataSource.get(j);
currentAngle = cData.getSliceAngle();
int darkColor = DrawHelper.getInstance().getDarkerColor((int) cData.getSliceColor());
paintArc.setColor(darkColor);
if (cData.getSelected()) // 指定突出哪个块
{
// 偏移圆心点位置(默认偏移半径的1/10)
float newRadius = div(radius, SELECTED_OFFSET);
// 计算百分比标签
MathHelper.getInstance()
.calcArcEndPointXY(cirX, cirY, newRadius, add(offsetAngle, div(currentAngle, 2f)));
float arcLeft2 = sub(MathHelper.getInstance().getPosX(), radius);
float arcTop2 = sub(MathHelper.getInstance().getPosY(), radius);
float arcRight2 = add(MathHelper.getInstance().getPosX(), radius);
float arcBottom2 = add(MathHelper.getInstance().getPosY(), radius);
RectF arcRF1 = new RectF(arcLeft2, arcTop2, arcRight2, arcBottom2);
canvas.drawArc(arcRF1, offsetAngle, (float) currentAngle, true, paintArc);
renderLabel(
canvas,
cData.getLabel(),
MathHelper.getInstance().getPosX(),
MathHelper.getInstance().getPosY(),
radius,
offsetAngle,
currentAngle);
} else {
canvas.drawArc(arcRF0, offsetAngle, (float) currentAngle, true, paintArc);
renderLabel(canvas, cData.getLabel(), cirX, cirY, radius, offsetAngle, currentAngle);
}
// 保存角度
saveArcRecord(j, cirX, cirY, radius, offsetAngle, currentAngle);
// 下次的起始角度
offsetAngle = add(offsetAngle, currentAngle);
}
// 图KEY
plotLegend.renderPieKey(canvas, this.getDataSource());
return true;
}