/**
* Calculates control width and creates text layouts.
*
* @param widthSize the input layout width
* @param mode the layout mode
* @return the calculated control width
*/
private int calculateLayoutWidth(int widthSize, int mode) {
initResourcesIfNecessary();
int width = widthSize;
int maxLength = getMaxTextLength();
if (maxLength > 0) {
// 一个字符宽度
float textWidth = (int) AbGraphicUtil.getStringWidth("0", labelPaint);
// 不算lable的宽度
itemsWidth = (int) (maxLength * textWidth);
} else {
itemsWidth = 0;
}
// 空隙宽度
itemsWidth += LABEL_OFFSET;
// label宽度的计算
labelWidth = 0;
if (label != null && label.length() > 0) {
labelWidth = (int) AbGraphicUtil.getStringWidth(label, labelPaint);
if (D) Log.d(TAG, "itemsWidth:" + itemsWidth + ",labelWidth:" + labelWidth);
}
boolean recalculate = false;
if (mode == MeasureSpec.EXACTLY) {
width = widthSize;
recalculate = true;
} else {
width = itemsWidth + labelWidth + 2 * PADDING;
if (labelWidth > 0) {
width += LABEL_OFFSET;
}
// Check against our minimum width
width = Math.max(width, getSuggestedMinimumWidth());
if (mode == MeasureSpec.AT_MOST && widthSize < width) {
width = widthSize;
recalculate = true;
}
}
if (recalculate) {
// recalculate width
int pureWidth = width - LABEL_OFFSET - 2 * PADDING;
if (pureWidth <= 0) {
itemsWidth = labelWidth = 0;
}
if (labelWidth > 0) {
// 对半分后再调整下
int newItemsWidth = pureWidth / 2;
int newLabelWidth = pureWidth - itemsWidth;
if (newItemsWidth < itemsWidth) {
// 放不下了,看label有空余宽度没有
itemsWidth = newItemsWidth + newLabelWidth - labelWidth;
} else {
labelWidth = newLabelWidth;
itemsWidth = newItemsWidth;
}
} else {
// no label
itemsWidth = pureWidth + LABEL_OFFSET;
}
}
if (itemsWidth > 0) {
createLayouts(itemsWidth, labelWidth);
}
return width;
}
/**
* 描述：TODO.
*
* @version v1.0
* @param canvas the canvas
* @see View#onDraw(Canvas)
* @author: amsoft.cn
* @date：2013-6-17 上午9:04:51
*/
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.getClipBounds(mRect);
int top = mRect.top;
int left = mRect.left;
int width = mRect.width();
int height = mRect.height();
if (mRenderer.isInScroll()) {
top = 0;
left = 0;
width = getMeasuredWidth();
height = getMeasuredHeight();
}
mChart.draw(canvas, left, top, width, height, mPaint);
if (mRenderer != null && mRenderer.isZoomEnabled() && mRenderer.isZoomButtonsVisible()) {
mPaint.setColor(ZOOM_BUTTONS_COLOR);
int bitmapWidth = zoomInImage.getWidth();
int bitmapHeight = zoomInImage.getHeight();
int rectMargin = 10;
int topPadding = 15;
int leftPadding = 20;
int leftRect = width - bitmapWidth * 3 - rectMargin - 4 * leftPadding;
int topRect = height - bitmapHeight - rectMargin - 2 * topPadding;
int rightRect = width - rectMargin;
int bottomRect = height - rectMargin;
mZoomR.set(leftRect, topRect, rightRect, bottomRect);
canvas.drawRoundRect(mZoomR, bitmapWidth / 2, bitmapWidth / 2, mPaint);
// 画图标
float buttonY = height - bitmapHeight - rectMargin - topPadding;
canvas.drawBitmap(
zoomInImage, width - rectMargin - bitmapWidth * 3 - 3 * leftPadding, buttonY, null);
canvas.drawBitmap(
zoomOutImage, width - rectMargin - bitmapWidth * 2 - 2 * leftPadding, buttonY, null);
canvas.drawBitmap(
fitZoomImage, width - rectMargin - bitmapWidth - leftPadding, buttonY, null);
}
if (mChart instanceof XYChart) {
XYMultipleSeriesRenderer mXYMultipleSeriesRenderer = ((XYChart) mChart).getRenderer();
if (mXYMultipleSeriesRenderer.isScaleLineEnabled()) {
oldX = ((TouchHandler) mTouchHandler).getOldX();
int scaleTopPadding = 50;
// 从坐标轴往下
int scaleBottomPadding = 20;
int explainTextSize1 = mXYMultipleSeriesRenderer.getExplainTextSize1();
int explainTextSize2 = mXYMultipleSeriesRenderer.getExplainTextSize2();
int scaleCircleRadius = mXYMultipleSeriesRenderer.getScaleCircleRadius();
// 按分辨率转换
scaleTopPadding = AbViewUtil.scale(mContext, scaleTopPadding);
scaleBottomPadding = AbViewUtil.scale(mContext, scaleBottomPadding);
// Y轴位置
int bottomY = 0;
int topY = 0;
if (mChart instanceof XYChart) {
Rect mScreenR = ((XYChart) mChart).getScreenR();
bottomY = mScreenR.bottom;
topY = mScreenR.top;
if (oldX == 0) {
oldX = mScreenR.right;
}
} else {
}
// 标尺线与拖手
mPaint.setColor(mXYMultipleSeriesRenderer.getScaleLineColor());
canvas.drawLine(oldX, scaleTopPadding, oldX, bottomY + scaleBottomPadding, mPaint);
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(ZOOM_BUTTONS_COLOR);
canvas.drawCircle(
oldX, bottomY + scaleBottomPadding + scaleCircleRadius, scaleCircleRadius, mPaint);
// 判断挂到哪个点上
if (mChart instanceof XYChart) {
List<Float> mPoints = null;
List<Double> mValues = null;
List<String> mExplains = null;
float minValue = -1;
int minIndex = -1;
// 要显示的文本
String showValue = "";
String showExplain = "";
Map<Integer, List<Float>> points = ((XYChart) mChart).getPoints();
Map<Integer, List<Double>> values = ((XYChart) mChart).getValues();
Map<Integer, List<String>> explains = ((XYChart) mChart).getExplains();
for (Entry<Integer, List<Float>> value : points.entrySet()) {
int index = value.getKey();
mPoints = value.getValue();
mValues = values.get(value.getKey());
mExplains = explains.get(value.getKey());
// 判断距离在2范围的点的索引
minValue = 1000;
minIndex = -1;
for (int i = 0; i < mPoints.size(); i += 2) {
Float f = mPoints.get(i);
if (Math.abs(f - oldX) < minValue) {
minValue = Math.abs(f - oldX);
minIndex = i;
}
}
if (index == 0) {
showValue = String.valueOf((double) mValues.get(minIndex + 1)).replace(".0", "");
String showExplainT = mExplains.get(minIndex / 2);
if (showExplainT != null && !"".equals(showExplainT.trim())) {
showExplain = mExplains.get(minIndex / 2);
}
} else {
showValue =
showValue
+ "/"
+ String.valueOf((double) mValues.get(minIndex + 1)).replace(".0", "");
String showExplainT = mExplains.get(minIndex / 2);
if (showExplainT != null && !"".equals(showExplainT.trim())) {
if (showExplain != null && !"".equals(showExplain.trim())) {
showExplain = showExplain + "/" + mExplains.get(minIndex / 2);
} else {
showExplain = mExplains.get(minIndex / 2);
}
}
}
}
if (minValue < 5) {
boolean showRect = false;
if (mXYMultipleSeriesRenderer.isDisplayValue0()) {
showRect = true;
} else {
if ("0".equals(showValue) || "0/0".equals(showValue)) {
showRect = false;
} else {
showRect = true;
}
}
if (showRect) {
// 画框框和点
// 获取文本的高度
TextPaint mTextPaint1 = new TextPaint(Paint.ANTI_ALIAS_FLAG);
mTextPaint1.setColor(Color.WHITE);
mTextPaint1.setTypeface(Typeface.DEFAULT);
mTextPaint1.setTextSize(explainTextSize1);
TextPaint mTextPaint2 = new TextPaint(Paint.ANTI_ALIAS_FLAG);
mTextPaint2.setColor(Color.WHITE);
mTextPaint2.setTypeface(Typeface.DEFAULT);
mTextPaint2.setTextSize(explainTextSize2);
// 行高
float hSize1 = AbGraphicUtil.getDesiredHeight(mTextPaint1);
// 行高
float hSize2 = AbGraphicUtil.getDesiredHeight(mTextPaint2);
int textPadding = 8;
textPadding = AbViewUtil.scale(mContext, textPadding);
// 设置个新的长方形
// 判断文字是否超出设置的框框
int row1 =
AbGraphicUtil.getDrawRowCount(
showValue, mXYMultipleSeriesRenderer.getScaleRectWidth() - 10, mTextPaint1);
int row2 =
AbGraphicUtil.getDrawRowCount(
showExplain, mXYMultipleSeriesRenderer.getScaleRectWidth() - 10, mTextPaint2);
RectF mRectF = null;
int textHeight = (int) (row1 * hSize1 + row2 * hSize2 + textPadding);
// 提示框的宽度和高度
int realScaleRectWidth = mXYMultipleSeriesRenderer.getScaleRectWidth();
int realScaleRectHeight = mXYMultipleSeriesRenderer.getScaleRectHeight();
// 画圆角矩形 //充满
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(mXYMultipleSeriesRenderer.getScaleRectColor());
// 设置画笔的锯齿效果
mPaint.setAntiAlias(true);
int mRectLeft = (int) (double) mPoints.get(minIndex);
int mRectTop = (int) (double) mPoints.get(minIndex + 1);
int mRectRight = mRectLeft + realScaleRectWidth;
int mRectBottom = mRectTop + realScaleRectHeight;
if (textHeight > realScaleRectHeight) {
realScaleRectHeight = textHeight;
mRectBottom = mRectTop + realScaleRectHeight;
}
// 判断是否会超出屏幕
if (mRectRight > width) {
// 超出了
mRectLeft =
(int) (double) mPoints.get(minIndex)
- 5
- mXYMultipleSeriesRenderer.getScaleRectWidth();
mRectRight = (int) (double) mPoints.get(minIndex) - 5;
}
if (mRectBottom > bottomY) {
// 超出了
mRectTop = (int) (double) mPoints.get(minIndex + 1) - 5 - realScaleRectHeight;
mRectBottom = (int) (double) mPoints.get(minIndex + 1) - 5;
// 是否超出Y=0的位置的
if (mRectTop < topY) {
mRectTop = mRectTop + realScaleRectHeight / 2;
mRectBottom = mRectBottom + realScaleRectHeight / 2;
}
}
mRectF = new RectF(mRectLeft, mRectTop, mRectRight, mRectBottom);
// 第二个参数是x半径，第三个参数是y半径
canvas.drawRoundRect(mRectF, 5, 5, mPaint);
AbGraphicUtil.drawText(
canvas,
showValue,
mXYMultipleSeriesRenderer.getScaleRectWidth(),
mTextPaint1,
mRectLeft + textPadding,
mRectTop + textPadding);
AbGraphicUtil.drawText(
canvas,
showExplain,
mXYMultipleSeriesRenderer.getScaleRectWidth(),
mTextPaint2,
mRectLeft + textPadding,
(int) (mRectTop + textPadding + row1 * hSize1));
}
}
}
}
}
}