Java Doc for GFontPeer.java in  » 6.0-JDK-Modules » j2me » sun » awt » gtk » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » sun.awt.gtk 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.awt.FontMetrics
      sun.awt.gtk.GFontPeer

GFontPeer
class GFontPeer extends FontMetrics implements FontPeer(Code)
The peer used for fonts in Gtk. This class extends the FontMetrics class so that it is very quick to get the font metrics for a font and we don't need to create a new object each time. We also maintain a cache which allows multiple font objects to share the same peer if they are of the same name, style and size. This reduces further the number of objects created.


Field Summary
 GPlatformFontgpf
    


Method Summary
native static  booleanareFontsTheSame(int font1, int font2)
     Tests whether two gdkfonts are the same.
public  intcharWidth(char ch)
     Returns the advance width of the specified character in this Font.
public  intgetAscent()
     Determines the font ascent of the font described by this font metric.
public  intgetDescent()
     Determines the font descent of the font described by this font metric.
static synchronized  GFontPeergetFontPeer(Font font)
     Gets the FontPeer for the specified Font.
public  intgetLeading()
     Determines the standard leading of the font described by this font metric.
public  intgetMaxAdvance()
     Gets the maximum advance width of any character in this Font.
public  intstringWidth(String str)
     Returns the total advance width for showing the specified String in this Font.
native  intstringWidthNative(byte[] str, int len, int gdkfont)
    

Field Detail
gpf
GPlatformFont gpf(Code)





Method Detail
areFontsTheSame
native static boolean areFontsTheSame(int font1, int font2)(Code)
Tests whether two gdkfonts are the same.



charWidth
public int charWidth(char ch)(Code)
Returns the advance width of the specified character in this Font. The advance width is the amount by which the current point is moved from one character to the next in a line of text.
Parameters:
  ch - the character to be measured the advance width of the specified charin the font described by this font metric.
See Also:   java.awt.FontMetrics.charsWidth
See Also:   java.awt.FontMetrics.stringWidth
since:
   JDK1.0



getAscent
public int getAscent()(Code)
Determines the font ascent of the font described by this font metric. The font ascent is the distance from the font's baseline to the top of most alphanumeric characters. Some characters in the font may extend above the font ascent line. the font ascent of the font.
See Also:   java.awt.FontMetrics.getMaxAscent
since:
   JDK1.0



getDescent
public int getDescent()(Code)
Determines the font descent of the font described by this font metric. The font descent is the distance from the font's baseline to the bottom of most alphanumeric characters with descenders. Some characters in the font may extend below the font descent line. the font descent of the font.
See Also:   java.awt.FontMetrics.getMaxDescent
since:
   JDK1.0



getFontPeer
static synchronized GFontPeer getFontPeer(Font font)(Code)
Gets the FontPeer for the specified Font. This will look in a cache first to prevent loading of the font for a second time.



getLeading
public int getLeading()(Code)
Determines the standard leading of the font described by this font metric. The standard leading (interline spacing) is the logical amount of space to be reserved between the descent of one line of text and the ascent of the next line. The height metric is calculated to include this extra space. the standard leading of the font.
See Also:   java.awt.FontMetrics.getHeight
See Also:   java.awt.FontMetrics.getAscent
See Also:   java.awt.FontMetrics.getDescent
since:
   JDK1.0



getMaxAdvance
public int getMaxAdvance()(Code)
Gets the maximum advance width of any character in this Font. The advance width is the amount by which the current point is moved from one character to the next in a line of text. the maximum advance width of any characterin the font, or -1 if themaximum advance width is not known.
since:
   JDK1.0



stringWidth
public int stringWidth(String str)(Code)
Returns the total advance width for showing the specified String in this Font. The advance width is the amount by which the current point is moved from one character to the next in a line of text.
Parameters:
  str - the String to be measured the advance width of the specified stringin the font described by this font metric.
See Also:   java.awt.FontMetrics.bytesWidth
See Also:   java.awt.FontMetrics.charsWidth
since:
   JDK1.0



stringWidthNative
native int stringWidthNative(byte[] str, int len, int gdkfont)(Code)



Fields inherited from java.awt.FontMetrics
protected Font font(Code)(Java Doc)

Methods inherited from java.awt.FontMetrics
public int bytesWidth(byte data, int off, int len)(Code)(Java Doc)
public int charWidth(int ch)(Code)(Java Doc)
public int charWidth(char ch)(Code)(Java Doc)
public int charsWidth(char data, int off, int len)(Code)(Java Doc)
public int getAscent()(Code)(Java Doc)
public int getDescent()(Code)(Java Doc)
public Font getFont()(Code)(Java Doc)
public int getHeight()(Code)(Java Doc)
public int getLeading()(Code)(Java Doc)
public int getMaxAdvance()(Code)(Java Doc)
public int getMaxAscent()(Code)(Java Doc)
public int getMaxDecent()(Code)(Java Doc)
public int getMaxDescent()(Code)(Java Doc)
public int[] getWidths()(Code)(Java Doc)
public int stringWidth(String str)(Code)(Java Doc)
public String toString()(Code)(Java Doc)

Methods inherited from java.lang.Object
public boolean equals(Object obj)(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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