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192 lines
9.9 KiB
192 lines
9.9 KiB
14 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qfont.cpp:2590 -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>QFontInfo Class</title>
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<style type="text/css"><!--
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--></style>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Functions</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QFontInfo Class Reference</h1>
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<p>The QFontInfo class provides general information about fonts.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qfontinfo-h.html">qfontinfo.h</a>></tt>
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<p><a href="qfontinfo-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#QFontInfo"><b>QFontInfo</b></a> ( const QFont & font )</li>
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<li class=fn><a href="#QFontInfo-2"><b>QFontInfo</b></a> ( const QFont & font, QFont::Script script )</li>
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<li class=fn><a href="#QFontInfo-3"><b>QFontInfo</b></a> ( const QFontInfo & fi )</li>
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<li class=fn><a href="#~QFontInfo"><b>~QFontInfo</b></a> ()</li>
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<li class=fn>QFontInfo & <a href="#operator-eq"><b>operator=</b></a> ( const QFontInfo & fi )</li>
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<li class=fn>QString <a href="#family"><b>family</b></a> () const</li>
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<li class=fn>int <a href="#pixelSize"><b>pixelSize</b></a> () const</li>
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<li class=fn>int <a href="#pointSize"><b>pointSize</b></a> () const</li>
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<li class=fn>bool <a href="#italic"><b>italic</b></a> () const</li>
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<li class=fn>int <a href="#weight"><b>weight</b></a> () const</li>
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<li class=fn>bool <a href="#bold"><b>bold</b></a> () const</li>
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<li class=fn>bool <a href="#fixedPitch"><b>fixedPitch</b></a> () const</li>
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<li class=fn>QFont::StyleHint <a href="#styleHint"><b>styleHint</b></a> () const</li>
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<li class=fn>bool <a href="#rawMode"><b>rawMode</b></a> () const</li>
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<li class=fn>bool <a href="#exactMatch"><b>exactMatch</b></a> () const</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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<p> The QFontInfo class provides general information about fonts.
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<p>
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<p> The QFontInfo class provides the same access functions as <a href="qfont.html">QFont</a>,
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e.g. <a href="#family">family</a>(), <a href="#pointSize">pointSize</a>(), <a href="#italic">italic</a>(), <a href="#weight">weight</a>(), <a href="#fixedPitch">fixedPitch</a>(),
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<a href="#styleHint">styleHint</a>() etc. But whilst the QFont access functions return the
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values that were set, a QFontInfo object returns the values that
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apply to the font that will actually be used to draw the text.
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<p> For example, when the program asks for a 25pt Courier font on a
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machine that has a non-scalable 24pt Courier font, QFont will
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(normally) use the 24pt Courier for rendering. In this case,
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<a href="qfont.html#pointSize">QFont::pointSize</a>() returns 25 and <a href="#pointSize">QFontInfo::pointSize</a>() returns
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24.
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<p> There are three ways to create a QFontInfo object.
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<ol type=1>
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<li> Calling the QFontInfo constructor with a QFont creates a font
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info object for a screen-compatible font, i.e. the font cannot be
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a printer font<sup>*</sup>. If the font is changed later, the font
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info object is <em>not</em> updated.
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<p> <li> <a href="qwidget.html#fontInfo">QWidget::fontInfo</a>() returns the font info for a widget's font.
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This is equivalent to calling QFontInfo(widget->font()). If the
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widget's font is changed later, the font info object is <em>not</em>
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updated.
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<p> <li> <a href="qpainter.html#fontInfo">QPainter::fontInfo</a>() returns the font info for a painter's
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current font. If the painter's font is changed later, the font
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info object is <em>not</em> updated.
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</ol>
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<p> <sup>*</sup> If you use a printer font the values returned may be
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inaccurate. Printer fonts are not always accessible so the nearest
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screen font is used if a printer font is supplied.
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<p> <p>See also <a href="qfont.html">QFont</a>, <a href="qfontmetrics.html">QFontMetrics</a>, <a href="qfontdatabase.html">QFontDatabase</a>, <a href="graphics.html">Graphics Classes</a>, and <a href="shared.html">Implicitly and Explicitly Shared Classes</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="QFontInfo"></a>QFontInfo::QFontInfo ( const <a href="qfont.html">QFont</a> & font )
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</h3>
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Constructs a font info object for <em>font</em>.
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<p> The font must be screen-compatible, i.e. a font you use when
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drawing text in <a href="qwidget.html">widgets</a> or <a href="qpixmap.html">pixmaps</a>, not <a href="qpicture.html">QPicture</a> or <a href="qprinter.html">QPrinter</a>.
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<p> The font info object holds the information for the font that is
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passed in the constructor at the time it is created, and is not
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updated if the font's attributes are changed later.
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<p> Use <a href="qpainter.html#fontInfo">QPainter::fontInfo</a>() to get the font info when painting.
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This will give correct results also when painting on paint device
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that is not screen-compatible.
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<h3 class=fn><a name="QFontInfo-2"></a>QFontInfo::QFontInfo ( const <a href="qfont.html">QFont</a> & font, <a href="qfont.html#Script-enum">QFont::Script</a> script )
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</h3>
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Constructs a font info object for <em>font</em> using the specified <em>script</em>.
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<h3 class=fn><a name="QFontInfo-3"></a>QFontInfo::QFontInfo ( const <a href="qfontinfo.html">QFontInfo</a> & fi )
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</h3>
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Constructs a copy of <em>fi</em>.
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<h3 class=fn><a name="~QFontInfo"></a>QFontInfo::~QFontInfo ()
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</h3>
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Destroys the font info object.
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<h3 class=fn>bool <a name="bold"></a>QFontInfo::bold () const
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</h3>
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<p> Returns TRUE if <a href="#weight">weight</a>() would return a value greater than <a href="qfont.html#Weight-enum">QFont::Normal</a>; otherwise returns FALSE.
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<p> <p>See also <a href="#weight">weight</a>() and <a href="qfont.html#bold">QFont::bold</a>().
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<p>Example: <a href="qfd-example.html#x1982">qfd/fontdisplayer.cpp</a>.
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<h3 class=fn>bool <a name="exactMatch"></a>QFontInfo::exactMatch () const
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</h3>
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Returns TRUE if the matched window system font is exactly the same
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as the one specified by the font; otherwise returns FALSE.
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<p> <p>See also <a href="qfont.html#exactMatch">QFont::exactMatch</a>().
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<h3 class=fn><a href="qstring.html">QString</a> <a name="family"></a>QFontInfo::family () const
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</h3>
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Returns the family name of the matched window system font.
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<p> <p>See also <a href="qfont.html#family">QFont::family</a>().
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<p>Examples: <a href="simple-font-demo-example.html#x2848">fonts/simple-qfont-demo/viewer.cpp</a> and <a href="qfd-example.html#x1983">qfd/fontdisplayer.cpp</a>.
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<h3 class=fn>bool <a name="fixedPitch"></a>QFontInfo::fixedPitch () const
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</h3>
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Returns the fixed pitch value of the matched window system font.
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<p> <p>See also <a href="qfont.html#fixedPitch">QFont::fixedPitch</a>().
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<h3 class=fn>bool <a name="italic"></a>QFontInfo::italic () const
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</h3>
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Returns the italic value of the matched window system font.
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<p> <p>See also <a href="qfont.html#italic">QFont::italic</a>().
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<p>Example: <a href="qfd-example.html#x1984">qfd/fontdisplayer.cpp</a>.
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<h3 class=fn><a href="qfontinfo.html">QFontInfo</a> & <a name="operator-eq"></a>QFontInfo::operator= ( const <a href="qfontinfo.html">QFontInfo</a> & fi )
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</h3>
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Assigns the font info in <em>fi</em>.
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<h3 class=fn>int <a name="pixelSize"></a>QFontInfo::pixelSize () const
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</h3>
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Returns the pixel size of the matched window system font.
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<p> <p>See also <a href="qfont.html#pointSize">QFont::pointSize</a>().
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<h3 class=fn>int <a name="pointSize"></a>QFontInfo::pointSize () const
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</h3>
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Returns the point size of the matched window system font.
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<p> <p>See also <a href="qfont.html#pointSize">QFont::pointSize</a>().
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<p>Examples: <a href="simple-font-demo-example.html#x2849">fonts/simple-qfont-demo/viewer.cpp</a> and <a href="qfd-example.html#x1985">qfd/fontdisplayer.cpp</a>.
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<h3 class=fn>bool <a name="rawMode"></a>QFontInfo::rawMode () const
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</h3>
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Returns TRUE if the font is a raw mode font; otherwise returns
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FALSE.
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<p> If it is a raw mode font, all other functions in QFontInfo will
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return the same values set in the <a href="qfont.html">QFont</a>, regardless of the font
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actually used.
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<p> <p>See also <a href="qfont.html#rawMode">QFont::rawMode</a>().
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<h3 class=fn><a href="qfont.html#StyleHint-enum">QFont::StyleHint</a> <a name="styleHint"></a>QFontInfo::styleHint () const
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</h3>
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Returns the style of the matched window system font.
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<p> Currently only returns the style hint set in <a href="qfont.html">QFont</a>.
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<p> <p>See also <a href="qfont.html#styleHint">QFont::styleHint</a>() and <a href="qfont.html#StyleHint-enum">QFont::StyleHint</a>.
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<h3 class=fn>int <a name="weight"></a>QFontInfo::weight () const
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</h3>
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Returns the weight of the matched window system font.
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<p> <p>See also <a href="qfont.html#weight">QFont::weight</a>() and <a href="#bold">bold</a>().
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">Qt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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