dbgrid.java

用java AWT开发的Grid表格组件

 else
 {
 this.rows_show=this.rows_show_min;
 this.set_option_visible(this.rows_show);
 if(this.rows>this.rows_show)
   this.sb.setVisible(true);
 }

       for (int j=0;j<this.cols;j++)
          {
           lab[0][j].setBackground(cell[0][j].Background);
           lab[0][j].setForeground(cell[0][j].Foreground);
           lab[0][j].setFont(cell[0][j].font);
           lab[0][j].setText(cell[0][j].text);
           lab[0][j].setAlignment(cell[0][j].Alignment);
           //lab[0][j].reshape(swidth+30,sheight,this.colwidth[j],this.common_rowheight);
           lab[0][j].setLocation(swidth+30,sheight);
           lab[0][j].resize(this.colwidth[j],this.common_rowheight);
           swidth+=this.colwidth[j];
          }
          //this.width=swidth;
  for (int i=1;i<this.rows_show;i++)
     {
       sheight+=this.common_rowheight;
       swidth=0;
       for (int j=0;j<this.cols;j++)
          {
           lab[i][j].setBackground(cell[this.toprow+i-1][j].Background);
           lab[i][j].setForeground(cell[this.toprow+i-1][j].Foreground);
           lab[i][j].setFont(cell[this.toprow+i-1][j].font);
           lab[i][j].setText(cell[this.toprow+i-1][j].text);
           lab[i][j].setAlignment(cell[this.toprow+i-1][j].Alignment);
           //lab[i][j].reshape(swidth+30,sheight,this.colwidth[j],this.common_rowheight);
           lab[i][j].setLocation(swidth+30,sheight);
           lab[i][j].resize(this.colwidth[j],this.common_rowheight);
           if(this.cell[this.toprow+i-1][j].b_img)
               {
                //Image img_buf=createImage(this.lab[i][j].getSize().width,this.lab[i][j].getSize().height);
                //Graphics offg=img_buf.getGraphics();
                //offg.drawImage(this.cell[this.toprow+i-1][j].img,0,(int)(this.cell[this.toprow+i-1][j].height*(1.0-this.cell[this.toprow+i-1][j].rate_h)/2),(int)(this.cell[this.toprow+i-1][j].width*this.cell[this.toprow+i-1][j].rate_w),(int)(this.cell[this.toprow+i-1][j].height*this.cell[this.toprow+i-1][j].rate_h),this);
                //this.lab[i][j].getGraphics().drawImage(img_buf,0,0,this);
                try{
               this.lab[i][j].getGraphics().drawImage(this.cell[this.toprow+i-1][j].img,0,(int)(this.cell[this.toprow+i-1][j].height*(1.0-this.cell[this.toprow+i-1][j].rate_h)/2),(int)(this.cell[this.toprow+i-1][j].width*this.cell[this.toprow+i-1][j].rate_w),(int)(this.cell[this.toprow+i-1][j].height*this.cell[this.toprow+i-1][j].rate_h),this);
               }
               catch (Exception e){}
              }
           swidth+=this.colwidth[j];
          }
       }
if(this.b_max)
   this.width=this.width_max;
   else
   this.width=this.width0;
this.height=this.rows_show*this.common_rowheight;
this.sb.setMaximum(this.rows-this.rows_show+2);
this.sb.setLocation(this.width-20,0);
this.sb.resize(20,this.height);
this.sb.repaint();


}//end build

public void check_selected()
{this.row_clicked=0;
 for(int i=1;i<this.rows_show;i++)
    {
    if(this.option[i].getState())
      this.row_clicked=this.toprow+i-1;
    }

}

public void append(int rows_add)
{
int lastrows;
lastrows=this.rows;
this.rows+=rows_add;

this.sb.setMaximum(this.rows-this.rows_show+2);
this.sb.repaint();

for(int i=lastrows;i<this.rows;i++)
    for(int j=0;j<this.cols;j++)
        cell[i][j]=new Cell("");


for(int i=0;i<this.cols;i++)
    for (int j=lastrows;j<this.rows;j++)
        {
        this.cell[j][i].width=this.common_colwidth;
        this.cell[j][i].Alignment=this.colAlignment[i];
        }

for(int i=lastrows;i<this.rows;i++)
   {
    this.rowheight[i]=this.common_rowheight;
    for (int j=0;j<this.cols;j++)
    {
    this.cell[i][j].font=this.font;
    this.cell[i][j].height=this.common_rowheight;
    this.cell[i][j].Background=this.Background;
    this.cell[i][j].Foreground=this.Foreground;
    }
    this.set_option_invisible();
   this.sb.setVisible(true);
   }


//this.refresh();
}


public void Clear()
 { if(this.b_max)
      this.zoomup();

   for (int i=1;i<this.rows;i++)
        for(int j=0;j<this.cols;j++)
        {
        this.cell[i][j].setBackground(this.Background);
        this.cell[i][j].setForeground(this.Foreground);
        this.cell[i][j].setAlignment(0);
        this.cell[i][j].setText("");
        this.cell[i][j].b_img=false;
         }

        this.rows=this.rows_show;
        this.toprow=1;
        this.row_clicked=0;
        this.option[0].setState(true);
        //this.set_option_invisible();
        this.sb.setVisible(false);
        this.refresh();
 }
public void ClearAll()
 {    
      if(this.b_max)
         this.zoomup();
      for (int i=0;i<this.rows;i++)
        for(int j=0;j<this.cols;j++)
        {
        this.cell[i][j].setBackground(this.Background);
        this.cell[i][j].setForeground(this.Foreground);
        this.cell[i][j].setAlignment(0);
        this.cell[i][j].setText("");
        this.cell[i][j].b_img=false;
         }

        this.rows=this.rows_show;
        this.toprow=1;
        this.row_clicked=0;
        this.option[0].setState(true);
        this.sb.setVisible(false);
        this.refresh();
 }


  public void mouseClicked(MouseEvent ev){
  }
  public void mouseReleased(MouseEvent ev){
  }
  public void mouseEntered(MouseEvent ev){
  }
  public void mouseExited(MouseEvent ev){
  }
  public void mousePressed(MouseEvent ev){
  }


 public boolean handleEvent(Event ev)
 {
 
  if (ev.target==sb)
    {
      switch(ev.id){
      
      case Event.SCROLL_ABSOLUTE:
           //System.out.println("moved");
           this.toprow=this.sb.getValue();
           //this.row_clicked=0;
           //this.option[0].setState(true);
           this.refresh();

           break;

      case Event.SCROLL_LINE_DOWN:
           //System.out.println("scrolled down");
           if (this.toprow<this.rows-this.rows_show)
              {
               this.toprow++;
               //this.row_clicked=0;
               //this.option[0].setState(true);
               this.refresh();
               }
           break;
      case Event.SCROLL_LINE_UP:
           //System.out.println("scrolled up");
           if (this.toprow>1)
              {
               this.toprow--;
                 //this.row_clicked=0;
                 //this.option[0].setState(true);
               this.refresh();
               }
           break;

      case Event.SCROLL_PAGE_DOWN:
           //System.out.println("paged down");
           if (this.toprow<this.rows-2*this.rows_show)
                this.toprow=this.toprow+this.rows_show-1;
              else
                {
                this.toprow=this.rows-this.rows_show;
                this.sb.setValue(this.rows-this.rows_show+2);
                }
                //this.toprow=this.rows;
           //this.row_clicked=0;
           //this.option[0].setState(true);
           this.refresh();

           break;
      case Event.SCROLL_PAGE_UP:
           //System.out.println("paged up");
           if (this.toprow>this.rows_show-1)
                this.toprow=this.toprow-this.rows_show+1;
              else
                {
                this.toprow=1;
                this.sb.setValue(0);
                }
           //this.row_clicked=0;
           //this.option[0].setState(true);
           this.refresh();
           break;
      
     }
     //return false;
     return true;
     }
     return false;
  }//end handleEvent

  public void set_option_invisible()
{
  for (int i=0;i<this.rows_show;i++)
      {
      this.option[i].setVisible(false);
      this.option[i].repaint();
      }
}
public void set_option_visible(int sum)
{ if (sum>this.rows_show)
     sum=this.rows_show;
  for (int i=1;i<sum;i++){
      this.option[i].setVisible(true);
       this.option[i].repaint();
       }
}

public void zoomup()
{ if (this.b_max)
      {
      this.b_max=false;
      //this.reshape(0,490,550,110);
      this.setLocation(this.pLocation.x,this.pLocation.y);

      this.refresh();
       this.resize(this.width_size,this.height);
      
      }
      else
      //if(!(this.rows==this.rows_show))
      { this.pLocation=this.getLocation();
        this.width_size=this.getSize().width;
        //this.width_max=590;
        this.b_max=true;
        int y=this.location().y;
        this.rows_show=Math.min(this.rows,this.rows_show_max);
        this.height=this.rows_show*this.common_rowheight;
        int rows_up=this.rows_show-this.rows_show_min;
        int i=y-rows_up*this.common_rowheight;
        {
        this.setLocation(0,i);
        this.resize(this.width_max,this.height);
        }
        this.toprow=1;
        this.row_clicked=0;

        if(this.rows<this.rows_show_max)
          this.sb.setVisible(false);
          this.option[0].setState(true);
          this.refresh();

        }

   this.sb.setValue(0);
}//end zoomup

}//end class dbGrid