package?graphic;

import?java.awt.Color;
import?java.awt.FontMetrics;
import?java.awt.Component;
import?java.awt.Graphics;
import?java.awt.Insets;



import?javax.swing.JTextArea;
import?javax.swing.border.AbstractBorder;
public?class?LineNumberBorder?extends?AbstractBorder?{
	?public?LineNumberBorder（）{
		?
	?}
	
	?/*Insets?對象是容器邊界的表示形式。
	??????????????????????????它指定容器必須在其各個邊緣留出的空間。
	?*/
	?//此方法在實例化時自動調用
	?//此方法關系到邊框是否占用組件的空間
	?public?Insets?getBorderInsets（Component?c）
	?{
		return?getBorderInsets（cnew?Insets（0000））;?
	?}
	?
	?public?Insets?getBorderInsets（Component?c?Insets?insets）
	?{
		?if（c?instanceof?JTextArea）{
			?int?width=lineNumberWidth（（JTextArea）c）;
			?insets.left=width;
		?}
		?return?insets;
	?????	?
	?}
	?
	?public?boolean?isBorderOpaque（）
	?{
		?return?false;
	?}
	?//邊框的繪制方法
	?//此方法必須實現
	?public?void?paintBorder（Component?c?Graphics?g?int?x?int?y?int?width?int?height）
?????{
		?//獲得當前剪貼區域的邊界矩形。
????	?java.awt.Rectangle?clip=g.getClipBounds（）;
????	?FontMetrics?fm=g.getFontMetrics（）;
????	?int?fontHeight=fm.getHeight（）;
????	?
????	?//starting?location?at?the?“top“?of?the?page...
????	?//?y?is?the?starting?baseline?for?the?font...
????	?int?ybaseline=y+fm.getAscent（）;
????	?
????	?//?now?determine?if?it?is?the?“top“?of?the?page...or?somewhere?else
????	?int?startingLineNumber=（clip.y/fontHeight）+1;
????	?
????	?if（startingLineNumber!=1）{
????		?ybaseline=y+startingLineNumber*fontHeight-
????		????????????（fontHeight-fm.getAscent（））;
????	?}
????	?
????	?int?yend=ybaseline+height;
????	?if（yend>（y+height））{
????		?yend=y+height;
????	?}
????	?
????	?JTextArea?jta=（JTextArea）c;
????	?int?lineWidth=lineNumberWidth（jta）;
????	?
????	?int?lnxStart=x+lineWidth;
????	?
????	?g.setColor（Color.blue）;
????	?
????	?
????	?//?loop?until?out?of?the?“visible“?region...
????	?int?length=（““+Math.max（jta.getRows（）?jta.getLineCount（）+1））.length（）;
?????????//繪制行號
????	?while（ybaseline?????????{
????????	?String?label?=?padLabel（startingLineNumber?length?true）;
????????	?
????????	?g.drawString（label?lnxStart-?fm.stringWidth（label）??ybaseline）;
????????	?ybaseline+=fontHeight;
????????	?startingLineNumber++;
?????????}
?????}
?????
?????//尋找適合的數字寬度
?????private?int?lineNumberWidth（JTextArea?jta）{
????	?int?lineCount=Math.max（jta.getRows（）?jta.getLineCount（））;
????	?return?jta.getFontMetrics（jta.getFont（））.stringWidth（lineCount+“?“）;
?????}
?????
?????private?static?String?padLabel（int?lineNumber?int?length?boolean?addSpace）
?????{
????	?StringBuffer?buffer=new?StringBuffer（）;
????	?buffer.append（lineNumber）;
????	?for（int?count=（length-buffer.length（））;count>0;count--）{
????		?buffer.insert（0?‘?‘）;
????	?}
????	?if（addSpace）{
????		?buffer.append（‘?‘）;
????	?}
????	?return?buffer.toString（）;
?????}
?????
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????232??2009-11-19?15:29??Interpretor\.classpath

?????文件????????387??2009-11-19?15:29??Interpretor\.project

?????文件???????3435??2009-12-11?16:50??Interpretor\bin\graphic\LineNumberBorder.class

?????文件???????1793??2009-12-17?14:37??Interpretor\bin\graphic\MyRenderer.class

?????文件??????10692??2009-12-17?14:42??Interpretor\bin\graphic\ParserGraphic.class

?????文件????????852??2009-12-17?14:13??Interpretor\bin\graphic\ResultWindow.class

?????文件???????4121??2009-12-17?14:45??Interpretor\bin\graphic\UserGraphic$1.class

?????文件????????960??2009-12-17?14:45??Interpretor\bin\graphic\UserGraphic$UndoHandler.class

?????文件??????10124??2009-12-17?14:45??Interpretor\bin\graphic\UserGraphic.class

?????文件???????7779??2009-12-11?17:04??Interpretor\bin\graphic.rar

?????文件???????9243??2009-12-17?14:22??Interpretor\bin\lexer\Lexer.class

?????文件???????1196??2009-12-04?19:53??Interpretor\bin\lexer\Token.class

?????文件???????1023??2009-12-17?14:20??Interpretor\bin\parser\AddSymbolLeaf.class

?????文件???????1972??2009-12-17?14:20??Interpretor\bin\parser\arth\ArthTree.class

?????文件???????1079??2009-12-17?14:20??Interpretor\bin\parser\arth\NumLeaf.class

?????文件???????1538??2009-12-17?14:20??Interpretor\bin\parser\arth\OtherPartTree.class

?????文件???????1442??2009-12-17?14:20??Interpretor\bin\parser\arth\OtherTermTree.class

?????文件???????1972??2009-12-17?14:20??Interpretor\bin\parser\arth\PartTree.class

?????文件???????3248??2009-12-17?14:20??Interpretor\bin\parser\arth\TermTree.class

?????文件???????1791??2009-12-17?14:20??Interpretor\bin\parser\arth\VarArrayElementLeaf.class

?????文件???????1235??2009-12-17?14:20??Interpretor\bin\parser\arth\VarSimpleLeaf.class

?????文件???????1551??2009-12-17?14:20??Interpretor\bin\parser\ass\AssVarArrayElementTree.class

?????文件???????1511??2009-12-17?14:20??Interpretor\bin\parser\ass\AssVarSimpleTree.class

?????文件????????775??2009-12-17?14:20??Interpretor\bin\parser\BlockTree.class

?????文件????????384??2009-12-17?14:20??Interpretor\bin\parser\CommonTree.class

?????文件????????332??2009-12-17?14:20??Interpretor\bin\parser\CONSTS.class

?????文件???????2142??2009-12-17?14:20??Interpretor\bin\parser\declare\VarArrayDefTree.class

?????文件???????1490??2009-12-17?14:20??Interpretor\bin\parser\declare\VarSimpleDefTree.class

?????文件???????2060??2009-12-17?14:20??Interpretor\bin\parser\ifTree\IfTree.class

?????文件???????1838??2009-12-17?14:20??Interpretor\bin\parser\LogicTree.class

............此處省略88個文件信息