package com.github.mikephil.charting.renderer;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Path;
import android.util.Log;
import com.github.mikephil.charting.components.LimitLine;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.XAxis.XAxisPosition;
import com.github.mikephil.charting.utils.Transformer;
import com.github.mikephil.charting.utils.Utils;
import com.github.mikephil.charting.utils.ViewPortHandler;
import java.util.List;
public class XAxisRenderer extends AxisRenderer {
protected XAxis mXAxis;
public XAxisRenderer(ViewPortHandler viewPortHandler, XAxis xAxis, Transformer trans) {
super(viewPortHandler, trans);
this.mXAxis = xAxis;
mAxisLabelPaint.setColor(Color.BLACK);
mAxisLabelPaint.setTextAlign(Align.CENTER);
mAxisLabelPaint.setTextSize(Utils.convertDpToPixel(10f));
}
public void computeAxis(float xValAverageLength, List<String> xValues) {
mAxisLabelPaint.setTypeface(mXAxis.getTypeface());
mAxisLabelPaint.setTextSize(mXAxis.getTextSize());
StringBuffer a = new StringBuffer();
int max = (int) Math.round(xValAverageLength
+ mXAxis.getSpaceBetweenLabels());
for (int i = 0; i < max; i++) {
a.append('h');
}
mXAxis.mLabelWidth = Utils.calcTextWidth(mAxisLabelPaint, a.toString());
mXAxis.mLabelHeight = Utils.calcTextHeight(mAxisLabelPaint, "Q");
mXAxis.setValues(xValues);
}
@Override
public void renderAxisLabels(Canvas c) {
if (!mXAxis.isEnabled() || !mXAxis.isDrawLabelsEnabled())
return;
float yoffset = Utils.convertDpToPixel(4f);
mAxisLabelPaint.setTypeface(mXAxis.getTypeface());
mAxisLabelPaint.setTextSize(mXAxis.getTextSize());
mAxisLabelPaint.setColor(mXAxis.getTextColor());
if (mXAxis.getPosition() == XAxisPosition.TOP) {
drawLabels(c, mViewPortHandler.offsetTop() - yoffset);
} else if (mXAxis.getPosition() == XAxisPosition.BOTTOM) {
drawLabels(c, mViewPortHandler.contentBottom() + mXAxis.mLabelHeight + yoffset * 1.5f);
} else if (mXAxis.getPosition() == XAxisPosition.BOTTOM_INSIDE) {
drawLabels(c, mViewPortHandler.contentBottom() - yoffset);
} else if (mXAxis.getPosition() == XAxisPosition.TOP_INSIDE) {
drawLabels(c, mViewPortHandler.offsetTop() + yoffset + mXAxis.mLabelHeight);
} else { // BOTH SIDED
drawLabels(c, mViewPortHandler.offsetTop() - yoffset);
drawLabels(c, mViewPortHandler.contentBottom() + mXAxis.mLabelHeight + yoffset * 1.6f);
}
}
@Override
public void renderAxisLine(Canvas c) {
if (!mXAxis.isDrawAxisLineEnabled() || !mXAxis.isEnabled())
return;
mAxisLinePaint.setColor(mXAxis.getAxisLineColor());
mAxisLinePaint.setStrokeWidth(mXAxis.getAxisLineWidth());
if (mXAxis.getPosition() == XAxisPosition.TOP
|| mXAxis.getPosition() == XAxisPosition.TOP_INSIDE
|| mXAxis.getPosition() == XAxisPosition.BOTH_SIDED) {
c.drawLine(mViewPortHandler.contentLeft(),
mViewPortHandler.contentTop(), mViewPortHandler.contentRight(),
mViewPortHandler.contentTop(), mAxisLinePaint);
}
if (mXAxis.getPosition() == XAxisPosition.BOTTOM
|| mXAxis.getPosition() == XAxisPosition.BOTTOM_INSIDE
|| mXAxis.getPosition() == XAxisPosition.BOTH_SIDED) {
c.drawLine(mViewPortHandler.contentLeft(),
mViewPortHandler.contentBottom(), mViewPortHandler.contentRight(),
mViewPortHandler.contentBottom(), mAxisLinePaint);
}
}
/**
* draws the x-labels on the specified y-position
*
* @param pos
*/
protected void drawLabels(Canvas c, float pos) {
// pre allocate to save performance (dont allocate in loop)
float[] position = new float[]{
0f, 0f
};
for (int i = mMinX; i <= mMaxX; i += mXAxis.mAxisLabelModulus) {
position[0] = i;
mTrans.pointValuesToPixel(position);
if (mViewPortHandler.isInBoundsX(position[0])) {
String label = mXAxis.getValues().get(i);
if (mXAxis.isAvoidFirstLastClippingEnabled()) {
// avoid clipping of the last
if (i == mXAxis.getValues().size() - 1 && mXAxis.getValues().size() > 1) {
float width = Utils.calcTextWidth(mAxisLabelPaint, label);
if (width > mViewPortHandler.offsetRight() * 2
&& position[0] + width > mViewPortHandler.getChartWidth())
position[0] -= width / 2;
// avoid clipping of the first
} else if (i == 0) {
float width = Utils.calcTextWidth(mAxisLabelPaint, label);
position[0] += width / 2;
}
}
drawLabel(c, label, i, position[0], pos);
}
}
}
protected void drawLabel(Canvas c, String label, int xIndex, float x, float y) {
String formattedLabel = mXAxis.getValueFormatter().getXValue(label, xIndex, mViewPortHandler);
c.drawText(formattedLabel, x, y, mAxisLabelPaint);
Log.d("formattedLabel:", formattedLabel);
}
@Override
public void renderGridLines(Canvas c) {
if (!mXAxis.isDrawGridLinesEnabled() || !mXAxis.isEnabled())
return;
// pre alloc
float[] position = new float[]{
0f, 0f
};
mGridPaint.setColor(mXAxis.getGridColor());
mGridPaint.setStrokeWidth(mXAxis.getGridLineWidth());
mGridPaint.setPathEffect(mXAxis.getGridDashPathEffect());
Path gridLinePath = new Path();
for (int i = mMinX; i <= mMaxX; i += mXAxis.mAxisLabelModulus) {
position[0] = i;
mTrans.pointValuesToPixel(position);
if (position[0] >= mViewPortHandler.offsetLeft()
&& position[0] <= mViewPortHandler.getChartWidth()) {
gridLinePath.moveTo(position[0], mViewPortHandler.contentBottom());
gridLinePath.lineTo(position[0], mViewPortHandler.contentTop());
// draw a path because lines don't support dashing on lower android versions
c.drawPath(gridLinePath, mGridPaint);
}
gridLinePath.reset();
}
}
/**
* Draws the LimitLines associated with this axis to the screen.
*
* @param c
*/
@Override
public void renderLimitLines(Canvas c) {
List<LimitLine> limitLines = mXAxis.getLimitLines();
if (limitLines == null || limitLines.size() <= 0)
return;
float[] position = new float[2];
for (int i = 0; i < limitLines.size(); i++) {
LimitLine l = limitLines.get(i);
if (!l.isEnabled())
continue;
position[0] = l.getLimit();
position[1] = 0.f;
mTrans.pointValuesToPixel(position);
renderLimitLineLine(c, l, position);
renderLimitLineLabel(c, l, position, 2.f + l.getYOffset());
}
}
float[] mLimitLineSegmentsBuffer = new float[4];
private Path mLimitLinePath = new Path();
public void renderLimitLineLine(Canvas c, LimitLine limitLine, float[] position) {
mLimitLineSegmentsBuffer[0] = position[0];
mLimitLineSegmentsBuffer[1] = mViewPortHandler.contentTop();
mLimitLineSegmentsBuffer[2] = position[0];
mLimitLineSegmentsBuffer[3] = mViewPortHandler.contentBottom();
mLimitLinePath.reset();
mLimitLinePath.moveTo(mLimitLineSegmentsBuffer[0], mLimitLineSegmentsBuffer[1]);
mLimitLinePath.lineTo(mLimitLineSegmentsBuffer[2], mLimitLineSegmentsBuffer[3]);
mLimitLinePaint.setStyle(Paint.Style.STROKE);
mLimitLinePaint.setColor(limitLine.getLineColor());
mLimitLinePaint.setStrokeWidth(limitLine.getLineWidth());
mLimitLinePaint.setPathEffect(limitLine.getDashPathEffect());
c.drawPath(mLimitLinePath, mLimitLinePaint);
}
public void renderLimitLineLabel(Canvas c, LimitLine limitLine, float[] position, float yOffset) {
String label = limitLine.getLabel();
// if drawing the limit-value label is enabled
if (label != null && !label.equals("")) {
mLimitLinePaint.setStyle(limitLine.getTextStyle());
mLimitLinePaint.setPathEffect(null);
mLimitLinePaint.setColor(limitLine.getTextColor());
mLimitLinePaint.setStrokeWidth(0.5f);
mLimitLinePaint.setTextSize(limitLine.getTextSize());
float xOffset = limitLine.getLineWidth() + limitLine.getXOffset();
final LimitLine.LimitLabelPosition labelPosition = limitLine.getLabelPosition();
if (labelPosition == LimitLine.LimitLabelPosition.RIGHT_TOP) {
final float labelLineHeight = Utils.calcTextHeight(mLimitLinePaint, label);
mLimitLinePaint.setTextAlign(Align.LEFT);
c.drawText(label, position[0] + xOffset, mViewPortHandler.contentTop() + yOffset + labelLineHeight, mLimitLinePaint);
} else if (labelPosition == LimitLine.LimitLabelPosition.RIGHT_BOTTOM) {
mLimitLinePaint.setTextAlign(Align.LEFT);
c.drawText(label, position[0] + xOffset, mViewPortHandler.contentBottom() - yOffset, mLimitLinePaint);
} else if (labelPosition == LimitLine.LimitLabelPosition.LEFT_TOP) {
mLimitLinePaint.setTextAlign(Align.RIGHT);
final float labelLineHeight = Utils.calcTextHeight(mLimitLinePaint, label);
c.drawText(label, position[0] - xOffset, mViewPortHandler.contentTop() + yOffset + labelLineHeight, mLimitLinePaint);
} else {
mLimitLinePaint.setTextAlign(Align.RIGHT);
c.drawText(label, position[0] - xOffset, mViewPortHandler.contentBottom() - yOffset, mLimitLinePaint);
}
}
}
}