Revision 11704 trunk/applications/appgvSIG/src/com/iver/cit/gvsig/project/documents/view/legend/gui/DotDensity.java
| DotDensity.java | ||
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* |
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* $Id$ |
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* $Log$ |
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* Revision 1.7 2007-05-10 09:46:45 jaume |
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* Revision 1.8 2007-05-17 09:32:37 jaume |
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* *** empty log message *** |
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* |
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* Revision 1.7 2007/05/10 09:46:45 jaume |
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* Refactored legend interface names |
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* |
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* Revision 1.6 2007/05/08 15:45:31 jaume |
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import java.awt.BorderLayout; |
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import java.awt.Color; |
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import java.awt.Component; |
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import java.awt.ComponentOrientation; |
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import java.awt.Dimension; |
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import java.awt.FlowLayout; |
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import org.gvsig.gui.beans.swing.GridBagLayoutPanel; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.engine.data.DataSource; |
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import com.hardcode.gdbms.engine.data.DataSourceFactory; |
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import com.hardcode.gdbms.engine.values.NumericValue; |
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* |
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*/ |
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public class DotDensity extends JPanel implements ILegendPanel {
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private static final int MAX_VALUE_COUNT = 300; |
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private FLyrVect layer; |
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private JPanel northPanel = null; |
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private GridBagLayoutPanel densityButtonsPanel = null; |
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private JRadioButton rdBtnMedium = null; |
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private JRadioButton rdBtnLow = null; |
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private IncrementalNumberField numDotSize = null; |
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private double max, min, mean; |
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private IncrementalNumberField nmbrDotValue = null; |
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private JLabel lblLabellingField = null; |
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private DotDensityLegend legend; |
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private String fieldName; |
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private boolean initializing; |
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private double max; |
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private double b, a; // regression function params where: y = bx + a |
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private int valueCount; |
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private MyListener cmbAction = new MyListener(); |
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NumberFormat nf = NumberFormat.getInstance(); |
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private NumberFormat nf = NumberFormat.getInstance(); |
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{
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nf.setMaximumFractionDigits(3); |
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} |
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private MyListener cmbAction = new MyListener(); |
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private class MyListener implements ItemListener, ActionListener {
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public void itemStateChanged(ItemEvent e) {
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if (!initializing) |
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doIt(); |
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fieldName = (String) cmbLegendField.getItemAt(0); |
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} |
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String sql = "select "+fieldName+" from '"+sds.getName()+"';";
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int fieldIndex = sds.getFieldIndexByName(fieldName);
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DataSource recordset = sds.getDataSourceFactory().executeSQL(sql, DataSourceFactory.AUTOMATIC_OPENING ); |
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// TODO implement MAX() and MIN() functions in GDBMS!!!!! |
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max = Double.NEGATIVE_INFINITY; |
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min = Double.MAX_VALUE; |
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for (int i = 0; i < sds.getRowCount(); i++) {
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double value = ((NumericValue) recordset.getFieldValue(i,0)).doubleValue(); |
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max = Math.max(max, value); |
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min = Math.min(min, value); |
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// will extract a "Minimum Square Adjustment" regression function. |
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long rowCount = sds.getRowCount(); |
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valueCount = (rowCount > MAX_VALUE_COUNT) ? MAX_VALUE_COUNT : (int) rowCount; |
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double sumx = 0, sumy = 0, sumxx = 0, sumyy = 0, sumxy = 0; |
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double Sxx, Sxy; |
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for (int i = 0; i < valueCount; i++) {
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double value = ((NumericValue) sds.getFieldValue(i,fieldIndex)).doubleValue(); |
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sumx += i; |
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sumy += value; |
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sumxx += i*i; |
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sumyy += value*value; |
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sumxy += i*value; |
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} |
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mean = (max+min) /2; |
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// start regression |
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double n = (double) valueCount; |
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Sxx = sumxx-sumx*sumx/n; |
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Sxy = sumxy-sumx*sumy/n; |
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b = Sxy/Sxx; |
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a = (sumy-b*sumx)/n; |
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buttonsListener.actionPerformed(null); |
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} catch (Exception ex) {
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public void stateChanged(ChangeEvent e) {
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// This is my messy statistic aggregation function |
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// TODO if I can, I'll have a look to my statistic books to figure out one better |
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int quantileIndex = getSldDensity().getValue(); |
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final int topLimit = 98; |
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if (quantileIndex > topLimit) |
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quantileIndex = topLimit; |
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double quantileAmount = (max-min)/100; |
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// nmbrDotValue.setText(nf.format(3*quantileAmount/Math.log(quantileIndex))); |
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nmbrDotValue.setDouble(3*quantileAmount/Math.log(quantileIndex)); |
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int quantileIndex = (MAX_VALUE_COUNT*getSldDensity().getValue())/100; |
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nmbrDotValue.setDouble((b*quantileIndex+a)/50); |
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} |
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}; |
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private ColorChooserPanel outlineColorChooserPanel; |
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private ILegend oldLegend; |
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private JSymbolPreviewButton btnOutline; |
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private ColorChooserPanel jccBackground; |
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public DotDensity() {
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super(); |
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} |
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if (!(legend instanceof DotDensityLegend)) {
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legend = new DotDensityLegend(); |
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((DotDensityLegend) legend).setFieldName((String) cmbLegendField.getItemAt(0)); |
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((DotDensityLegend) legend).setFieldNames( |
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new String[] {(String) cmbLegendField.getItemAt(0)});
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} |
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DotDensityLegend theLegend = (DotDensityLegend) legend; |
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initializing = false; // enables events to the combo box |
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cmbLegendField.setSelectedItem(theLegend.getFieldName());
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cmbLegendField.setSelectedItem(theLegend.getFieldNames()[0]);
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try {
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getDotColorChooserPanel().setColor(theLegend.getDotColor()); |
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} catch (NullPointerException npEx) {
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getDotColorChooserPanel().setColor(Color.RED); |
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} |
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try {
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getBackgroundColorChooserPanel().setColor(theLegend.getBGColor()); |
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} catch (NullPointerException npEx) {
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getDotColorChooserPanel().setColor(Color.WHITE); |
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} |
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getBtnOutline().setSymbol(theLegend.getOutline()); |
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try {
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double dotValue = theLegend.getDotValue(); |
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if (dotValue <= 0) |
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dotValue = 100; |
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getNmbrDotValue().setDouble(dotValue); |
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} catch (NullPointerException npEx) {
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getNmbrDotValue().setDouble(max); |
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} |
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// create a simple-fill symbol over which the dot density will be drawn |
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SimpleFillSymbol fillSymbol = new SimpleFillSymbol(); |
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fillSymbol.setFillColor(Color.WHITE);
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fillSymbol.setFillColor(getBackgroundColorChooserPanel().getColor());
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fillSymbol.setOutline((ILineSymbol) getBtnOutline().getSymbol()); |
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// combine both the DotDensitySymbol and the SimpleFillSymbol in |
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legend.addSymbol(ValueFactory.createValue("theSymbol"), symbol);
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legend.setDefaultSymbol(symbol); |
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legend.setDotValue(dotValue); |
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legend.setFieldName(fieldName);
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legend.setFieldNames(new String[] {fieldName});
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} catch (Exception e) {
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densityButtonsPanel.addComponent( |
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PluginServices.getText(this, "color"), aux); |
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aux = new JPanel(layout); |
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aux.add(getBackgroundColorChooserPanel()); |
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densityButtonsPanel.addComponent( |
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PluginServices.getText(this, "background_color"), aux); |
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aux = new JPanel(layout); |
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aux.add(getBtnOutline()); |
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densityButtonsPanel.addComponent( |
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PluginServices.getText(this, "outline_color"), aux);
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PluginServices.getText(this, "outline"), aux); |
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} |
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return densityButtonsPanel; |
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} |
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private ColorChooserPanel getBackgroundColorChooserPanel() {
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if (jccBackground == null) {
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jccBackground = new ColorChooserPanel() ; |
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jccBackground.setColor(Color.WHITE); |
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jccBackground.setAlpha(255); |
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} |
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return jccBackground; |
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} |
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private JSymbolPreviewButton getBtnOutline() {
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if (btnOutline == null) {
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btnOutline = new JSymbolPreviewButton(FShape.LINE); |
| ... | ... | |
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return DotDensityLegend.class; |
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} |
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public boolean isSuitableFor(FLayer layer) {
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if (layer instanceof FLyrVect) {
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try {
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FLyrVect lyr = (FLyrVect) layer; |
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if (lyr.getShapeType() != FShape.POLYGON) |
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return false; |
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SelectableDataSource sds; |
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sds = lyr.getRecordset(); |
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String[] fNames = sds.getFieldNames(); |
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for (int i = 0; i < fNames.length; i++) {
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if (isNumericField(sds.getFieldType(i))) {
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return true; |
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} |
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} |
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} catch (ReadDriverException e) {
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return false; |
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} |
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} |
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return false; |
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} |
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} // @jve:decl-index=0:visual-constraint="10,10" |
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