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/*
* Copyright 2012 AndroidPlot.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.androidplot.xy;
import android.graphics.Path;
import android.graphics.PointF;
/**
* Renders a point as a line with the vertices marked. Requires 2 or more points to
* be rendered.
*/
public class StepRenderer extends LineAndPointRenderer<StepFormatter> {
public StepRenderer(XYPlot plot) {
super(plot);
}
@Override
protected void appendToPath(Path path, PointF thisPoint, PointF lastPoint) {
//path.lineTo(thisPoint.x, thisPoint.y);
path.lineTo(thisPoint.x, lastPoint.y);
path.lineTo(thisPoint.x, thisPoint.y);
//canvas.drawPoint(point.x, lastPoint.y, format.getVertexPaint());
// next the vertical:
//canvas.drawLine(point.x, lastPoint.y, point.x, point.y, format.getLinePaint());
}
}
/*
public class StepRenderer extends XYSeriesRenderer<StepFormatter> {
private PointF lastPoint;
private boolean drawLinesEnabled = true;
private boolean drawPointsEnabled = true;
private XYAxisType stepAxis = XYAxisType.DOMAIN;
public StepRenderer(XYPlot plot) {
super(plot);
}
@Override
public void onRender(Canvas canvas, RectF plotArea) throws PlotRenderException {
for(XYSeries series : getPlot().getSeriesListForRenderer(this.getClass())) {
drawSeries(canvas, plotArea, series, getFormatter(series));
}
//foreach(this.)
//foreach()
}
@Override
public void doDrawLegendIcon(Canvas canvas, RectF rect, String text, StepFormatter formatter) {
// horizontal icon:
float centerY = rect.centerY();
float centerX = rect.centerX();
canvas.drawLine(rect.left, rect.top, rect.right, rect.bottom, formatter.getLinePaint());
canvas.drawPoint(centerX, centerY, formatter.getVertexPaint());
//canvas.drawRect(rect, formatter.getLinePaint());
}
private void drawSeries(Canvas canvas, RectF plotArea, XYSeries series, StepFormatter formatter) throws PlotRenderException {
beginSeries(canvas, plotArea, formatter);
//XYDataset series = bundle.getDataset();
//int seriesIndex = bundle.getSeriesIndex();
PointF thisPoint;
for (int i = 0; i < series.size(); i++) {
Number y = series.getY(i);
Number x = series.getD(i);
if (y != null && x != null) {
thisPoint = ValPixConverter.valToPix(
x,
y,
plotArea,
getPlot().getCalculatedMinX(),
getPlot().getCalculatedMaxX(),
getPlot().getCalculatedMinY(),
getPlot().getCalculatedMaxY());
//float pixX = ValPixConverter.valToPix(x.doubleValue(), getPlot().getCalculatedMinX().doubleValue(), getPlot().getCalculatedMaxX().doubleValue(), plotArea.width(), false) + (plotArea.left);
//float pixY = ValPixConverter.valToPix(y.doubleValue(), getPlot().getCalculatedMinY().doubleValue(), getPlot().getCalculatedMaxY().doubleValue(), plotArea.height(), true) + plotArea.top;
//thisPoint = new PointF(pixX, pixY);
} else {
thisPoint = null;
}
drawPoint(canvas, thisPoint, plotArea, formatter);
}
endSeries(canvas, plotArea, formatter);
}
private void beginSeries(Canvas canvas, RectF plotArea, StepFormatter format) throws PlotRenderException {
lastPoint = null;
}
private void drawPoint(Canvas canvas, PointF point, RectF plotArea, StepFormatter format) throws PlotRenderException {
if (lastPoint != null) {
if (point != null) {
switch(stepAxis) {
case DOMAIN:
// first draw the horizontal line:
canvas.drawLine(lastPoint.x, lastPoint.y, point.x, lastPoint.y, format.getLinePaint());
canvas.drawPoint(point.x, lastPoint.y, format.getVertexPaint());
// next the vertical:
canvas.drawLine(point.x, lastPoint.y, point.x, point.y, format.getLinePaint());
break;
case RANGE:
break;
}
//doDrawLine(canvas, lastPoint, point, plotArea, format);
}
drawLastPoint(canvas, plotArea, format);
}
lastPoint = point;
}
private void endSeries(Canvas canvas, RectF plotArea, StepFormatter format) throws PlotRenderException {
if(lastPoint != null) {
drawLastPoint(canvas, plotArea, format);
}
}
protected void drawLastPoint(Canvas canvas, RectF plotArea, StepFormatter format) throws PlotRenderException {
canvas.drawPoint(lastPoint.x, lastPoint.y, format.getVertexPaint());
}
public XYAxisType getStepAxis() {
return stepAxis;
}
public void setStepAxis(XYAxisType stepAxis) {
this.stepAxis = stepAxis;
}
}
*/
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