com.trolltech.qt.gui
Class QFontInfo

java.lang.Object
  extended by com.trolltech.qt.internal.QSignalEmitterInternal
      extended by com.trolltech.qt.QSignalEmitter
          extended by com.trolltech.qt.QtJambiObject
              extended by com.trolltech.qt.gui.QFontInfo
All Implemented Interfaces:
QtJambiInterface, java.lang.Cloneable

public class QFontInfo
extends QtJambiObject
implements java.lang.Cloneable

The QFontInfo class provides general information about fonts. The QFontInfo class provides the same access functions as QFont, e.g. family(), pointSize(), italic(), weight(), fixedPitch(), styleHint() etc. But whilst the QFont access functions return the values that were set, a QFontInfo object returns the values that apply to the font that will actually be used to draw the text.

For example, when the program asks for a 25pt Courier font on a machine that has a non-scalable 24pt Courier font, QFont will (normally) use the 24pt Courier for rendering. In this case, QFont::pointSize() returns 25 and QFontInfo::pointSize() returns 24.

There are three ways to create a QFontInfo object.

  1. Calling the QFontInfo constructor with a QFont creates a font info object for a screen-compatible font, i.e. the font cannot be a printer font. If the font is changed later, the font info object is not updated.

    (Note: If you use a printer font the values returned may be inaccurate. Printer fonts are not always accessible so the nearest screen font is used if a printer font is supplied.)

  2. QWidget::fontInfo() returns the font info for a widget's font. This is equivalent to calling QFontInfo(widget->font()). If the widget's font is changed later, the font info object is not updated.
  3. QPainter::fontInfo() returns the font info for a painter's current font. If the painter's font is changed later, the font info object is not updated.

See also:
QFont, QFontMetrics, and QFontDatabase.


Nested Class Summary
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.AbstractSignal, QSignalEmitter.PrivateSignal0, QSignalEmitter.PrivateSignal1, QSignalEmitter.PrivateSignal2, QSignalEmitter.PrivateSignal3, QSignalEmitter.PrivateSignal4, QSignalEmitter.PrivateSignal5, QSignalEmitter.PrivateSignal6, QSignalEmitter.PrivateSignal7, QSignalEmitter.PrivateSignal8, QSignalEmitter.PrivateSignal9, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9
 
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal
 
Field Summary
 
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
currentSender
 
Constructor Summary
QFontInfo(QFont arg__1)
          Constructs a font info object for font.
QFontInfo(QFontInfo arg__1)
          Constructs a copy of fi.
 
Method Summary
 boolean bold()
          Returns true if weight() would return a value greater than QFont::Normal ; otherwise returns false.
 QFontInfo clone()
          This method is reimplemented for internal reasons
 boolean exactMatch()
          Returns true if the matched window system font is exactly the same as the one specified by the font; otherwise returns false.
 java.lang.String family()
          Returns the family name of the matched window system font.
 boolean fixedPitch()
          Returns the fixed pitch value of the matched window system font.
 boolean italic()
          Returns the italic value of the matched window system font.
 int pixelSize()
          Returns the pixel size of the matched window system font.
 int pointSize()
          Returns the point size of the matched window system font.
 double pointSizeF()
          Returns the point size of the matched window system font.
 boolean rawMode()
          Returns true if the font is a raw mode font; otherwise returns false.
 QFont.Style style()
          Returns the style value of the matched window system font.
 QFont.StyleHint styleHint()
          Returns the style of the matched window system font.
 int weight()
          Returns the weight of the matched window system font.
 
Methods inherited from class com.trolltech.qt.QtJambiObject
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr
 
Methods inherited from class com.trolltech.qt.QSignalEmitter
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread
 
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
__qt_signalInitialization
 
Methods inherited from class java.lang.Object
getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface com.trolltech.qt.QtJambiInterface
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership
 

Constructor Detail

QFontInfo

public QFontInfo(QFont arg__1)
Constructs a font info object for font.

The font must be screen-compatible, i.e. a font you use when drawing text in widgets or pixmaps, not QPicture or QPrinter.

The font info object holds the information for the font that is passed in the constructor at the time it is created, and is not updated if the font's attributes are changed later.

Use QPainter::fontInfo() to get the font info when painting. This will give correct results also when painting on paint device that is not screen-compatible.


QFontInfo

public QFontInfo(QFontInfo arg__1)
Constructs a copy of fi.

Method Detail

bold

public final boolean bold()
Returns true if weight() would return a value greater than QFont::Normal ; otherwise returns false.

See also:
weight(), and QFont::bold().


exactMatch

public final boolean exactMatch()
Returns true if the matched window system font is exactly the same as the one specified by the font; otherwise returns false.

See also:
QFont::exactMatch().


family

public final java.lang.String family()
Returns the family name of the matched window system font.

See also:
QFont::family().


fixedPitch

public final boolean fixedPitch()
Returns the fixed pitch value of the matched window system font.

See also:
QFont::fixedPitch().


italic

public final boolean italic()
Returns the italic value of the matched window system font.

See also:
QFont::italic().


pixelSize

public final int pixelSize()
Returns the pixel size of the matched window system font.

See also:
QFont::pointSize().


pointSize

public final int pointSize()
Returns the point size of the matched window system font.

See also:
pointSizeF(), and QFont::pointSize().


pointSizeF

public final double pointSizeF()
Returns the point size of the matched window system font.

See also:
QFont::pointSizeF().


rawMode

public final boolean rawMode()
Returns true if the font is a raw mode font; otherwise returns false.

If it is a raw mode font, all other functions in QFontInfo will return the same values set in the QFont, regardless of the font actually used.

See also:
QFont::rawMode().


style

public final QFont.Style style()
Returns the style value of the matched window system font.

See also:
QFont::style().


styleHint

public final QFont.StyleHint styleHint()
Returns the style of the matched window system font.

Currently only returns the style hint set in QFont.

See also:
QFont::styleHint(), and QFont::StyleHint .


weight

public final int weight()
Returns the weight of the matched window system font.

See also:
QFont::weight(), and bold().


clone

public QFontInfo clone()
This method is reimplemented for internal reasons

Overrides:
clone in class java.lang.Object