/** 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);
}
}
}
