package myfirstmap;
import com.mapinfo.mapj.MapJ;
import com.mapinfo.unit.LinearUnit;
import com.mapinfo.util.DoublePoint;
import com.mapinfo.util.DoubleRect;
import com.mapinfo.mapj.Layers;
import com.mapinfo.mapj.DataLayer;
import com.mapinfo.mapj.FeatureLayer;
import com.mapinfo.mapdefcontainer.MapDefContainer;
import  com.mapinfo.mapdefcontainer.FileMapDefContainer;
import com.mapinfo.mapxtreme.client.MapXtremeImageRenderer;
import com.mapinfo.xmlprot.mxtj.ImageRequestComposer;
import java.awt.Color;
import com.mapinfo.mapj.LabelProperties;
import com.mapinfo.graphics.Rendition;
import com.mapinfo.graphics.RenditionImpl;
import com.mapinfo.labeltheme.OverrideLabelTheme;
import com.mapinfo.mapj.BaseLabelProperties;
import com.mapinfo.unit.Distance;
public class LabelClass
{
  private String mdfFilePath="e:\\MapInfo\\study\\mapmdf";
  private  String mdfFileName="states.mdf";
  private String mapxtremeURL="http://901-32:8083/mapxtreme47/mapxtreme";
  private MapDefContainer mapDefContainer;
  public LabelClass()
  {
  }
public void studyLabelProperty()
{
  MapJ mapj=new MapJ();
  DoublePoint centerPoint=new DoublePoint(-108.8,42.5);
  LinearUnit unit=LinearUnit.kilometer ;
  mapj.setDistanceUnits(unit) ;
  mapj.setDeviceBounds(new DoubleRect(0,0,800,600)) ;
  Layers layers=null;
  DataLayer dataLayer=null;
  DoubleRect rect;
  FeatureLayer featureLayer=null;
  String layerName;
  LabelProperties labelProperties;
  //DoubleRect bound=new DoubleRect(centerPoint,
  try
  {
    mapj.setCenter(centerPoint);
//    mapDefContainer=new FileMapDefContainer(mdfFilePath);
//    mapj.loadMapDefinition(mapDefContainer,mdfFileName);
    mapj.loadMapDefinition(mdfFilePath+"\\"+mdfFileName) ;
    layers=mapj.getLayers() ;
    dataLayer=(DataLayer)layers.get(0) ;
    rect=dataLayer.getBounds() ;
    double width=(rect.xmax -rect.xmin )/8;
    double height=(rect.ymax -rect.ymin )/8;
    mapj.setBounds(new DoubleRect(centerPoint,width,height)) ;
    //
  featureLayer=(FeatureLayer)mapj.getLayers() .get(0) ;
    layerName=featureLayer.getName() ;
    labelProperties=new LabelProperties();
    //set the label offset and alignments to their default position
    labelProperties.setOffset(new DoublePoint(1d,1d) ) ;//不用(0,0)可以讓標簽在區域里面，當然最好的辦法是
    //求出每個區域的中心，然后用它作為偏移值，不過再做此之前還應該多一道判斷手續，那就是該幾何體是不是區域
    labelProperties.setHorizontalAlignment(LabelProperties.HORIZ_ALIGN_DEFAULT ) ;
    labelProperties.setVerticalAlignment(LabelProperties.VERT_ALIGN_DEFAULT ) ;
    // Turn the multiline option on and set the columns to be used for labeling.
    labelProperties.setMultiLineTextMode(LabelProperties.MULTILINE_TEXT_ON ) ;
    //labelProperties.setLabelExpression("\"NAME:[\"+State_Name+\"]\\nABBREV:[\"+State+\"]\"");//("\"name:[\"+State_Name+\"]\nabbrev:[\"+State+\"]") ;
    labelProperties.setLabelExpression("\"name:[\"+State+\"]") ;
    //// Set LabelFollowingPath to true to enable label splining
    boolean bFollowPath=true;
//    labelProperties.setLabelFollowingPath(bFollowPath);//我不知道這條語句有什么用
    boolean bfollow=labelProperties.isLabelFollowingPath() ;
    // Set a Rendition for the Labels and create an OverrideLabelTheme in
   // order to display the options set.
    Rendition rend=new RenditionImpl();
    rend.setValue(Rendition.FONT_FAMILY ,"Arial");
    rend.setValue(Rendition.FONT_WEIGHT ,2);
    //Distance distance=new Distance(60,    LinearUnit.kilometer );
    rend.setValue(Rendition.FONT_SIZE ,12);
    rend.setValue(Rendition.FONT_STYLE ,Rendition.FontStyle.ITALIC  );
    rend.setValue(Rendition.SYMBOL_FOREGROUND ,Color.red );
    labelProperties.setRendition(rend) ;
//    OverrideLabelTheme overLabelTheme =new OverrideLabelTheme(labelProperties,"Theme Name");//1
//    featureLayer.getLabelThemeList() .add(overLabelTheme) ;//2
   // Get the States Layer, set its LabelProperties object, and turn labeling on.
   //我覺得這下面的兩條語句沒有必要要，因為labelProperties已經添加到LabelThemeList中去了,我試驗了一下
  //用它們其中一個就可以了，即要么將labelProperties添加到LabelThemeList中去(用1,2)，要么用featureLayer來直接設置
  //該標簽屬性(用3，4)
    BaseLabelProperties baseLabel=new BaseLabelProperties(labelProperties);//3
    Distance maxDist=new Distance(100,LinearUnit.kilometer );
    Distance minDist=new Distance(70,LinearUnit.kilometer );
    baseLabel.setZoomMax(maxDist) ;
    baseLabel.setZoomMin(minDist) ;
   featureLayer.setLabelProperties(baseLabel) ;//4
    //下面的語句是另外一種標簽設置方式，它首先通過getLabelProperties()方法得到該層的標簽屬性的引用（不是拷貝）
    //這樣后面的設置就直接反映到標簽屬性里去了，沒有必要再用 featureLayer.setLabelProperties(baseLabel) 這樣的語句了
/*    LabelProperties labelProperties2=featureLayer.getLabelProperties() ;
    Rendition rend2=new RenditionImpl();
    rend2.setValue(Rendition.FONT_STYLE ,Rendition.FontStyle.NORMAL  );
    rend2.setValue(Rendition.FONT_FAMILY ,"Arial");
    rend2.setValue(Rendition.FONT_WEIGHT ,1);
    rend2.setValue(Rendition.FONT_SIZE ,30);
    labelProperties2.setRendition(rend2) ;*/
    //
    featureLayer.setAutoLabel(true) ;//這條語句必須要
    //
    MapXtremeImageRenderer render=new MapXtremeImageRenderer(mapxtremeURL);
    ImageRequestComposer imageRC=ImageRequestComposer.create(mapj,256,Color.white,"image/png");
    render.render(imageRC) ;
    render.toFile("E:\\MapInfo\\study\\png\\labelProperty2.png") ;
    render.dispose() ;
  }catch(Exception e)
  {
    System.out.println("get a "+e.getClass() +"\nwith message "+e.getMessage() ) ;
  }

}
}