root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / rendering / styling / AttrInTableLabeling.java @ 11704
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package com.iver.cit.gvsig.fmap.rendering.styling; |
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import java.awt.Color; |
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import java.awt.Font; |
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import java.awt.Graphics2D; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.image.BufferedImage; |
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import java.util.ArrayList; |
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import java.util.Vector; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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import javax.print.attribute.PrintRequestAttributeSet; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.engine.values.NullValue; |
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import com.hardcode.gdbms.engine.values.NumericValue; |
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import com.hardcode.gdbms.engine.values.Value; |
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import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException; |
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import com.iver.cit.gvsig.exceptions.visitors.VisitorException; |
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import com.iver.cit.gvsig.fmap.ViewPort; |
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import com.iver.cit.gvsig.fmap.core.CartographicSupport; |
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import com.iver.cit.gvsig.fmap.core.FPoint2D; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.core.symbols.SimpleTextSymbol; |
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import com.iver.cit.gvsig.fmap.core.v02.FConstant; |
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import com.iver.cit.gvsig.fmap.core.v02.FLabel; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
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import com.iver.cit.gvsig.fmap.layers.ReadableVectorial; |
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import com.iver.cit.gvsig.fmap.layers.SelectableDataSource; |
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import com.iver.utiles.XMLEntity; |
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import com.iver.utiles.swing.threads.Cancellable; |
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/**
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* LabelingStrategy used when the user wants to use label sizes, rotations, etc. from
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* the values included in fields of the datasource's table
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*
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* @author jaume dominguez faus - jaume.dominguez@iver.es
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*
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*/
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public class AttrInTableLabeling implements ILabelingStrategy, CartographicSupport { |
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public static final double MIN_TEXT_SIZE = 3; |
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private ILabelingMethod method = new DefaultLabelingMethod(); |
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private IZoomConstraints zoom;
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private int idTextField; |
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private int idHeightField; |
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private int idRotationField; |
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private FLyrVect layer;
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// private double unitFactor = 1D;
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private double fixedSize; |
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private int unit = -1; //(pixel) |
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private boolean useFixedSize; |
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public ILabelingMethod getLabelingMethod() {
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return this.method; |
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} |
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public void setLabelingMethod(ILabelingMethod method) { |
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this.method = method;
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} |
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public IPlacementConstraints getPlacementConstraints() {
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return null; // (automatically handled by the driver) |
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} |
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public void setPlacementConstraints(IPlacementConstraints constraints) { |
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// nothing
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} |
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public IZoomConstraints getZoomConstraints() {
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return zoom;
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} |
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public void setZoomConstraints(IZoomConstraints constraints) { |
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this.zoom = constraints;
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} |
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public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel) |
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throws ReadDriverException {
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double scale = viewPort.getScale();
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double fontScaleFactor = FConstant.FONT_HEIGHT_SCALE_FACTOR;
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LabelClass lClass = method.getDefaultLabelClass(); |
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SimpleTextSymbol sym = (SimpleTextSymbol) lClass.getLabelSymbol(); |
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if (zoom==null || |
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( zoom.isUserDefined() && (scale >= zoom.getMaxScale()) |
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&& (scale <= zoom.getMinScale()) ) ) {
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try {
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// limit the labeling to the visible extent
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FBitSet bs = layer.queryByRect(viewPort.getAdjustedExtent()); |
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ReadableVectorial source = layer.getSource(); |
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SelectableDataSource recordSet = source.getRecordset(); |
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for(int i=bs.nextSetBit(0); i>=0 && !cancel.isCanceled(); i=bs.nextSetBit(i+1)) { |
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Value[] vv = recordSet.getRow(i);
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double size;
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if (useFixedSize){
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// uses fixed size
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size = fixedSize * fontScaleFactor; |
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} else if (idHeightField != -1) { |
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// text size is defined in the table
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try {
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size = ((NumericValue) vv[idHeightField]).doubleValue() * fontScaleFactor; |
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} catch (ClassCastException ccEx) { |
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if (!NullValue.class.equals(vv[idHeightField].getClass())) {
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throw new ReadDriverException("Unknown", ccEx); |
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} |
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// a null value
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Logger.getAnonymousLogger().
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warning("Null text height value for text '"+vv[idTextField].toString()+"'"); |
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continue;
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} |
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} else {
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// otherwise will use the size in the symbol
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size = sym.getFont().getSize(); |
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} |
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size = CartographicSupportToolkit. |
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toScreenUnitYAxis(size, |
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unit, |
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viewPort |
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); |
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if (size <= MIN_TEXT_SIZE) {
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// label is too small to be readable, will be skipped
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// this speeds up the rendering in wider zooms
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continue;
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} |
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sym.setFontSize(size); |
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double rotation = 0D; |
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if (idRotationField!= -1) { |
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// text rotation is defined in the table
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rotation = -Math.toRadians(((NumericValue) vv[idRotationField]).doubleValue());
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} |
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IGeometry geom = source.getShape(i); |
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sym.setText(vv[idTextField].toString()); |
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sym.setRotation(rotation); |
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FLabel[] aux = geom.createLabels(0, true); |
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for (int j = 0; j < aux.length; j++) { |
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FPoint2D p = new FPoint2D(aux[j].getOrig());
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p.transform(viewPort.getAffineTransform()); |
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sym.draw(g, null, p);
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} |
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} |
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} catch (VisitorException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, "Could not get the layer extent.\n" + |
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e.getMessage()); |
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} catch (ExpansionFileReadException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, "Could not draw annotation in the layer" + |
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"\""+layer.getName()+"\".\nIs the layer being edited?.\n"+e.getMessage()); |
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, "Could not draw annotation in the layer.\n" + |
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e.getMessage()); |
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} |
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} |
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} |
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public void setLayer(FLyrVect lyrVect) { |
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this.layer = lyrVect;
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} |
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public String getClassName() { |
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return getClass().getName();
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} |
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public XMLEntity getXMLEntity() {
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XMLEntity xml = new XMLEntity();
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xml.putProperty("className", getClassName());
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try {
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xml.putProperty("HeightField", getHeightField());
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, "Acessing TextHeight field.\n"+e.getMessage()); |
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} |
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try {
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xml.putProperty("TextField", getTextField());
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, "Acessing TextField field.\n"+e.getMessage()); |
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} |
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try {
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xml.putProperty("RotationField", getRotationField());
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, "Acessing RotationField field.\n"+e.getMessage()); |
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} |
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xml.putProperty("Unit", unit);
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return xml;
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} |
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public String getRotationField() throws ReadDriverException { |
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if (idRotationField == -1) return null; |
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return ((SelectableDataSource) layer.getRecordset())
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.getFieldName(idRotationField); |
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} |
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public int getRotationFieldId() { |
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return idRotationField;
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} |
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public void setRotationFieldId(int fieldId) { |
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this.idRotationField = fieldId;
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} |
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public String getTextField() throws ReadDriverException { |
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if (idTextField == -1) return null; |
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return ((SelectableDataSource) layer.getRecordset())
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.getFieldName(idTextField); |
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} |
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public int getTextFieldId() { |
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return idTextField;
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} |
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public void setTextFieldId(int fieldId) { |
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this.idTextField = fieldId;
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} |
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public String getHeightField() throws ReadDriverException { |
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if (idHeightField == -1) return null; |
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return ((SelectableDataSource) layer.getRecordset())
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.getFieldName(idHeightField); |
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} |
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public int getHeightFieldId() { |
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return idHeightField;
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} |
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public void setHeightFieldId(int fieldId) { |
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this.idHeightField = fieldId;
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} |
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public void setXMLEntity(XMLEntity xml) { |
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if (xml.contains("TextField" )) |
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setTextField(xml.getStringProperty("TextField"));
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if (xml.contains("HeightField")) |
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setHeightField("HeightField");
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if (xml.contains("RotationField")) |
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setRotationField("RotationField");
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if (xml.contains("UnitFactor")) |
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setUnit(xml.getIntProperty("Unit"));
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} |
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public void setTextField(String textFieldName) { |
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try {
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idTextField = ((SelectableDataSource) layer.getRecordset()) |
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.getFieldIndexByName(textFieldName); |
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, e.getMessage()); |
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} |
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} |
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public void setRotationField(String rotationFieldName) { |
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if (rotationFieldName != null) { |
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try {
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idRotationField = ((SelectableDataSource) layer.getRecordset()) |
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.getFieldIndexByName(rotationFieldName); |
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, e.getMessage()); |
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} |
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} else idRotationField = -1; |
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} |
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/**
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* Sets the field that contains the size of the text. The size is computed
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* in meters. To use any other unit, call setUnit(int) with the scale factor from meters
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* (for centimeters, call <b>setUnitFactor(0.01))</b>.
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* @param heightFieldName
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*/
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public void setHeightField(String heightFieldName) { |
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if (heightFieldName != null) { |
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try {
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idHeightField = ((SelectableDataSource) layer.getRecordset()) |
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.getFieldIndexByName(heightFieldName); |
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, e.getMessage()); |
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} |
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} else idHeightField = -1; |
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} |
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public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, PrintRequestAttributeSet properties) throws ReadDriverException { |
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draw(null, g, viewPort, cancel);
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} |
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public void setUsesFixedSize(boolean b) { |
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useFixedSize = b; |
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} |
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public boolean usesFixedSize() { |
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return useFixedSize;
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} |
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public double getFixedSize() { |
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return fixedSize;
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} |
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public void setFixedSize(double fixedSize) { |
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this.fixedSize = fixedSize;
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} |
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public void setUnit(int unitIndex) { |
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unit = unitIndex; |
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} |
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public int getUnit() { |
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return unit;
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} |
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public String[] getUsedFields() { |
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Vector v = new Vector(); |
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try {
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if (getHeightField()!=null) v.add(getHeightField()); |
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if (getRotationField()!=null) v.add(getRotationField()); |
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if (getTextField()!=null) v.add(getTextField()); |
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if (getHeightField()!=null) v.add(getHeightField()); |
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} catch (ReadDriverException e) {
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Logger.getAnonymousLogger().log(Level.SEVERE, e.getMessage()); |
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} |
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return (String[]) v.toArray(new String[v.size()]); |
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} |
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} |