org.eclipse.swt.graphics
Class FontMetrics

java.lang.Object
  |
  +--org.eclipse.swt.graphics.FontMetrics

public final class FontMetrics
extends Object

Safe:


Field Summary
 org.eclipse.swt.internal.win32.TEXTMETRIC handle
          Suppressed: On Windows, handle is a Win32 TEXTMETRIC struct On Photon, handle is a Photon FontQueryInfo struct (Warning: This field is platform dependent)
 
Constructor Summary
(package private) FontMetrics()
          Prevents instances from being created outside the package.
 
Method Summary
 boolean equals(Object object)
          Suppressed: Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.
 int getAscent()
          Enabled: Returns the ascent of the font described by the receiver.
 int getAverageCharWidth()
          Enabled: Returns the average character width, measured in pixels, of the font described by the receiver.
 int getDescent()
          Enabled: Returns the descent of the font described by the receiver.
 int getHeight()
          Enabled: Returns the height of the font described by the receiver, measured in pixels.
 int getLeading()
          Enabled: Returns the leading area of the font described by the receiver.
 int hashCode()
          Suppressed: Returns an integer hash code for the receiver.
static FontMetrics win32_new(org.eclipse.swt.internal.win32.TEXTMETRIC handle)
          Suppressed: Invokes platform specific functionality to allocate a new font metrics.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

handle

public org.eclipse.swt.internal.win32.TEXTMETRIC handle
Suppressed: On Windows, handle is a Win32 TEXTMETRIC struct On Photon, handle is a Photon FontQueryInfo struct (Warning: This field is platform dependent)

Constructor Detail

FontMetrics

FontMetrics()
Prevents instances from being created outside the package.

Method Detail

equals

public boolean equals(Object object)
Suppressed: Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.

Overrides:
equals in class Object
Parameters:
object - the object to compare with this object
Returns:
true if the object is the same as this object and false otherwise
See Also:
hashCode()

getAscent

public int getAscent()
Enabled: Returns the ascent of the font described by the receiver. A font's ascent is the distance from the baseline to the top of actual characters, not including any of the leading area, measured in pixels.

Returns:
the ascent of the font

getAverageCharWidth

public int getAverageCharWidth()
Enabled: Returns the average character width, measured in pixels, of the font described by the receiver.

Returns:
the average character width of the font

getDescent

public int getDescent()
Enabled: Returns the descent of the font described by the receiver. A font's descent is the distance from the baseline to the bottom of actual characters, not including any of the leading area, measured in pixels.

Returns:
the descent of the font

getHeight

public int getHeight()
Enabled: Returns the height of the font described by the receiver, measured in pixels. A font's height is the sum of its ascent, descent and leading area.

Returns:
the height of the font
See Also:
getAscent(), getDescent(), getLeading()

getLeading

public int getLeading()
Enabled: Returns the leading area of the font described by the receiver. A font's leading area is the space above its ascent which may include accents or other marks.

Returns:
the leading space of the font

hashCode

public int hashCode()
Suppressed: Returns an integer hash code for the receiver. Any two objects which return true when passed to equals must return the same value for this method.

Overrides:
hashCode in class Object
Returns:
the receiver's hash
See Also:
equals(java.lang.Object)

win32_new

public static FontMetrics win32_new(org.eclipse.swt.internal.win32.TEXTMETRIC handle)
Suppressed: Invokes platform specific functionality to allocate a new font metrics.

IMPORTANT: This method is not part of the public API for FontMetrics. It is marked public only so that it can be shared within the packages provided by SWT. It is not available on all platforms, and should never be called from application code.



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