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java.lang.Objectcom.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.gui.QFontInfo
public class QFontInfo
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.
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.)
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.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.QFont
, QFontMetrics
, and QFontDatabase
.
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
---|
QSignalEmitter.AbstractSignal, 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 |
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com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal |
Field Summary |
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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 |
---|
public QFontInfo(QFont arg__1)
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.
public QFontInfo(QFontInfo arg__1)
Method Detail |
---|
public final boolean bold()
weight()
would return a value greater than QFont::Normal
; otherwise returns false. weight()
, and QFont::bold()
.
public final boolean exactMatch()
QFont::exactMatch()
.
public final java.lang.String family()
QFont::family()
.
public final boolean fixedPitch()
QFont::fixedPitch()
.
public final boolean italic()
QFont::italic()
.
public final int pixelSize()
QFont::pointSize()
.
public final int pointSize()
pointSizeF()
, and QFont::pointSize()
.
public final double pointSizeF()
QFont::pointSizeF()
.
public final boolean rawMode()
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.
QFont::rawMode()
.
public final QFont.Style style()
QFont::style()
.
public final QFont.StyleHint styleHint()
Currently only returns the style hint set in QFont
.
QFont::styleHint()
, and QFont::StyleHint
.
public final int weight()
QFont::weight()
, and bold()
.
public QFontInfo clone()
clone
in class java.lang.Object
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