Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / load / babel / SimplifyFilter.java

diff --git a/src/tim/prune/load/babel/SimplifyFilter.java b/src/tim/prune/load/babel/SimplifyFilter.java
new file mode 100644 (file)
index 0000000..1567c88
--- /dev/null
+++ b/src/tim/prune/load/babel/SimplifyFilter.java
@@ -0,0 +1,147 @@
+package tim.prune.load.babel;
+
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.GridLayout;
+
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.ButtonGroup;
+import javax.swing.JComboBox;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+
+import tim.prune.I18nManager;
+import tim.prune.data.UnitSetLibrary;
+import tim.prune.gui.DecimalNumberField;
+import tim.prune.gui.WholeNumberField;
+
+/**
+ * Simplify filter for GPSBabel
+ */
+public class SimplifyFilter extends FilterDefinition
+{
+       /** Constructor */
+       public SimplifyFilter(AddFilterDialog inFilterDialog)
+       {
+               super(inFilterDialog);
+               makePanelContents();
+       }
+
+       private WholeNumberField _maxPointsField = null;
+       private DecimalNumberField _distField = null;
+       private JComboBox<String> _distUnitsCombo = null;
+       private JRadioButton _crossTrackRadio = null;
+       private JRadioButton _lengthRadio = null;
+       private JRadioButton _relativeRadio = null;
+
+
+       /** @return filter name */
+       protected String getFilterName() {
+               return "simplify";
+       }
+
+       /** Make the panel contents */
+       protected void makePanelContents()
+       {
+               setLayout(new BorderLayout());
+               JPanel boxPanel = new JPanel();
+               boxPanel.setLayout(new BoxLayout(boxPanel, BoxLayout.Y_AXIS));
+               add(boxPanel, BorderLayout.NORTH);
+               JLabel topLabel = new JLabel(I18nManager.getText("dialog.gpsbabel.filter.simplify.intro"));
+               topLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
+               boxPanel.add(topLabel);
+               boxPanel.add(Box.createVerticalStrut(18)); // spacer
+               // Main three-column grid
+               JPanel gridPanel = new JPanel();
+               gridPanel.setLayout(new GridLayout(0, 3, 4, 4));
+               gridPanel.add(new JLabel(I18nManager.getText("dialog.gpsbabel.filter.simplify.maxpoints")));
+               _maxPointsField = new WholeNumberField(6);
+               _maxPointsField.addKeyListener(_paramChangeListener);
+               gridPanel.add(_maxPointsField);
+               gridPanel.add(new JLabel(" "));
+               gridPanel.add(new JLabel(I18nManager.getText("dialog.gpsbabel.filter.simplify.maxerror")));
+               _distField = new DecimalNumberField();
+               _distField.addKeyListener(_paramChangeListener);
+               gridPanel.add(_distField);
+               _distUnitsCombo = new JComboBox<String>(new String[] {
+                       I18nManager.getText(UnitSetLibrary.UNITS_KILOMETRES.getNameKey()),
+                       I18nManager.getText(UnitSetLibrary.UNITS_MILES.getNameKey())
+               });
+               gridPanel.add(_distUnitsCombo);
+               // radio buttons
+               _crossTrackRadio = new JRadioButton(I18nManager.getText("dialog.gpsbabel.filter.simplify.crosstrack"));
+               _crossTrackRadio.setSelected(true);
+               _lengthRadio     = new JRadioButton(I18nManager.getText("dialog.gpsbabel.filter.simplify.length"));
+               _relativeRadio   = new JRadioButton(I18nManager.getText("dialog.gpsbabel.filter.simplify.relative"));
+               ButtonGroup radioGroup = new ButtonGroup();
+               radioGroup.add(_crossTrackRadio);
+               radioGroup.add(_lengthRadio);
+               radioGroup.add(_relativeRadio);
+               gridPanel.add(_crossTrackRadio);
+               gridPanel.add(_lengthRadio);
+               gridPanel.add(_relativeRadio);
+               gridPanel.setAlignmentX(Component.LEFT_ALIGNMENT);
+               boxPanel.add(gridPanel);
+       }
+
+       /**
+        * @return true if the filters are valid
+        */
+       public boolean isFilterValid()
+       {
+               final boolean countGiven = _maxPointsField.getText() != null && _maxPointsField.getText().trim().length() > 0;
+               final boolean distGiven = _distField.getText() != null && _distField.getText().trim().length() > 0;
+               if ((!countGiven && !distGiven) || (countGiven && distGiven)) {
+                       return false; // only one or the other allowed
+               }
+               if (countGiven && _maxPointsField.getValue() <= 1) {
+                       return false; // must have a decent max points
+               }
+               if (distGiven && _distField.getValue() <= 0.001) {
+                       return false; // no zero or negative distances allowed
+               }
+               // must be ok
+               return true;
+       }
+
+       /**
+        * @return filter parameters as a string, or null
+        */
+       protected String getParameters()
+       {
+               if (!isFilterValid()) return null;
+               StringBuilder builder = new StringBuilder();
+               // type
+               final boolean countGiven = _maxPointsField.getText() != null && _maxPointsField.getText().trim().length() > 0;
+               final boolean distGiven = _distField.getText() != null && _distField.getText().trim().length() > 0;
+               if (countGiven) {
+                       builder.append(",count=").append(_maxPointsField.getValue());
+               }
+               else if (distGiven)
+               {
+                       double dValue = 1.0;
+                       try {
+                               dValue = Double.parseDouble(_distField.getText());
+                       }
+                       catch (Exception e) {} // shouldn't happen, otherwise validation would have failed
+                       builder.append(",error=").append(dValue);
+                       // units of distance (miles by default)
+                       if (_distUnitsCombo.getSelectedIndex() == 0) {
+                               builder.append("k"); // nothing for miles
+                       }
+               }
+               // three options
+               if (_crossTrackRadio.isSelected()) {
+                       builder.append(",crosstrack"); // default, could not pass it
+               }
+               else if (_lengthRadio.isSelected()) {
+                       builder.append(",length");
+               }
+               else if (_relativeRadio.isSelected()) {
+                       builder.append(",relative");
+               }
+               return builder.toString();
+       }
+}