/**
* Applies the data from the graph's template to this chart
*
* @param data a Vector<DateValueTuple> of measurements that should be used to scale the lines
* returned by the template
*/
private void applyTemplate(Vector data) {
if (currentTemplate != null) {
Vector lines = currentTemplate.getLines(data);
if (lines != null) {
Enumeration en = lines.elements();
while (en.hasMoreElements()) {
Vector dataPoints = (Vector) en.nextElement();
for (int i = 0; i < dataPoints.size(); i++) {
chart.insertItem((LinePointsItem) dataPoints.elementAt(i));
}
}
chart.startNewLine();
}
}
}
/** Do the initial setup for the Chart */
private void init() {
// #style lineChart
chart = new LineChart("");
chart.setUseDefaultColor(false);
chart.setFont(Font.FACE_PROPORTIONAL, Font.STYLE_PLAIN, Font.SIZE_SMALL);
chart.setDrawAxis(true);
chart.setPreferredSize(240, 200);
chart.setMargins(5, 3, 30, 35);
chart.makeShadowVisible(true);
chart.setShadowColor(20, 20, 20);
chart.setColor(0, 0, 0);
chart.resetData();
// chart.setMaxYScaleFactor(100);
// chart.setMaxXScaleFactor(18);
wec.init();
}
/** Commits the data line (not the template lines), onto the actual chart widget */
private void applyData() {
for (int i = 0; i < chartXPointsArray.length; i++) {
chart.insertItem(
"", chartYPointsArray[i].intValue(), chartXPointsArray[i].intValue(), 0, 0, 255);
}
}
/*
* (non-Javadoc)
* @see org.javarosa.formmanager.view.chatterbox.widget.ExpandedWidget#updateWidget(org.javarosa.core.model.QuestionDef)
*/
protected void updateWidget(FormEntryPrompt prompt) {
currentTemplate = (IGraphTemplate) templates.get(prompt.getPromptAttributes());
chart.resetData();
applyTemplate(data);
applyData();
}
/*
* (non-Javadoc)
* @see org.javarosa.formmanager.view.chatterbox.widget.ExpandedWidget#setWidgetValue(java.lang.Object)
*/
protected void setWidgetValue(Object o) {
if (o instanceof Vector) {
data = (Vector) o;
int numPoints = data.size();
int scaledRes = resolution / numPoints;
chartXPointsArray = new Integer[numPoints];
chartYPointsArray = new Integer[numPoints];
Long minDate = null;
Long maxDate = null;
Integer minVal = null;
Integer maxVal = null;
Enumeration en = data.elements();
while (en.hasMoreElements()) {
DateValueTuple tuple = (DateValueTuple) en.nextElement();
long time = tuple.date.getTime();
if (minDate == null || minDate.longValue() > time) {
minDate = new Long(time);
}
if (maxDate == null || maxDate.longValue() < time) {
maxDate = new Long(time);
}
int val = tuple.value;
if (minVal == null || minVal.intValue() > val) {
minVal = new Integer(val);
}
if (maxVal == null || maxVal.intValue() < val) {
maxVal = new Integer(val);
}
}
long dateSpan = maxDate.longValue() - minDate.longValue();
if (dateSpan == 0) {
dateSpan = 1;
}
// int valSpan = maxVal.intValue() - minVal.intValue();
long dateRes = dateSpan / numPoints;
// int valRes = valSpan / numPoints;
Vector xpoints = new Vector();
Vector ypoints = new Vector();
en = data.elements();
while (en.hasMoreElements()) {
DateValueTuple tuple = (DateValueTuple) en.nextElement();
long time = tuple.date.getTime();
long timeUnit = (time - minDate.longValue()) * scaledRes;
long scaledTime = (timeUnit / dateRes);
int intScaled = (int) scaledTime;
int finalTime = intScaled;
Integer xPoint = new Integer(finalTime);
Integer val = new Integer(tuple.value);
xpoints.addElement(xPoint);
ypoints.addElement(val);
}
xpoints.copyInto(chartXPointsArray);
ypoints.copyInto(chartYPointsArray);
// chart.setMaxYScaleFactor((maxVal.intValue()*2)/3);
// chart.setMinYScaleFactor(minVal.intValue());
chart.resetData();
applyTemplate(data);
applyData();
}
}