/**************************************************************************** | |
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** rights. These rights are described in the Nokia Qt LGPL Exception | |
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****************************************************************************/ | |
#include "qfont.h" | |
#include "qdebug.h" | |
#include "qpaintdevice.h" | |
#include "qfontdatabase.h" | |
#include "qfontmetrics.h" | |
#include "qfontinfo.h" | |
#include "qpainter.h" | |
#include "qhash.h" | |
#include "qdatastream.h" | |
#include "qapplication.h" | |
#include "qstringlist.h" | |
#include "qthread.h" | |
#include "qthreadstorage.h" | |
#include <private/qunicodetables_p.h> | |
#include "qfont_p.h" | |
#include <private/qfontengine_p.h> | |
#include <private/qpainter_p.h> | |
#include <private/qtextengine_p.h> | |
#include <limits.h> | |
#ifdef Q_WS_X11 | |
#include "qx11info_x11.h" | |
#include <private/qt_x11_p.h> | |
#endif | |
#ifdef Q_WS_QWS | |
#include "qscreen_qws.h" | |
#if !defined(QT_NO_QWS_QPF2) | |
#include <qfile.h> | |
#include "qfontengine_qpf_p.h" | |
#endif | |
#endif | |
#ifdef Q_OS_SYMBIAN | |
#include <private/qt_s60_p.h> | |
#endif | |
#include <QMutexLocker> | |
// #define QFONTCACHE_DEBUG | |
#ifdef QFONTCACHE_DEBUG | |
# define FC_DEBUG qDebug | |
#else | |
# define FC_DEBUG if (false) qDebug | |
#endif | |
QT_BEGIN_NAMESPACE | |
#ifdef Q_WS_WIN | |
extern HDC shared_dc(); | |
#endif | |
#ifdef Q_WS_X11 | |
extern const QX11Info *qt_x11Info(const QPaintDevice *pd); | |
#endif | |
bool QFontDef::exactMatch(const QFontDef &other) const | |
{ | |
/* | |
QFontDef comparison is more complicated than just simple | |
per-member comparisons. | |
When comparing point/pixel sizes, either point or pixelsize | |
could be -1. in This case we have to compare the non negative | |
size value. | |
This test will fail if the point-sizes differ by 1/2 point or | |
more or they do not round to the same value. We have to do this | |
since our API still uses 'int' point-sizes in the API, but store | |
deci-point-sizes internally. | |
To compare the family members, we need to parse the font names | |
and compare the family/foundry strings separately. This allows | |
us to compare e.g. "Helvetica" and "Helvetica [Adobe]" with | |
positive results. | |
*/ | |
if (pixelSize != -1 && other.pixelSize != -1) { | |
if (pixelSize != other.pixelSize) | |
return false; | |
} else if (pointSize != -1 && other.pointSize != -1) { | |
if (pointSize != other.pointSize) | |
return false; | |
} else { | |
return false; | |
} | |
if (!ignorePitch && !other.ignorePitch && fixedPitch != other.fixedPitch) | |
return false; | |
if (stretch != 0 && other.stretch != 0 && stretch != other.stretch) | |
return false; | |
QString this_family, this_foundry, other_family, other_foundry; | |
QFontDatabase::parseFontName(family, this_foundry, this_family); | |
QFontDatabase::parseFontName(other.family, other_foundry, other_family); | |
return (styleHint == other.styleHint | |
&& styleStrategy == other.styleStrategy | |
&& weight == other.weight | |
&& style == other.style | |
&& this_family == other_family | |
&& (this_foundry.isEmpty() | |
|| other_foundry.isEmpty() | |
|| this_foundry == other_foundry) | |
#ifdef Q_WS_X11 | |
&& addStyle == other.addStyle | |
#endif // Q_WS_X11 | |
); | |
} | |
extern bool qt_is_gui_used; | |
Q_GUI_EXPORT int qt_defaultDpiX() | |
{ | |
if (!qt_is_gui_used) | |
return 75; | |
int dpi; | |
#ifdef Q_WS_X11 | |
dpi = QX11Info::appDpiX(); | |
#elif defined(Q_WS_WIN) | |
dpi = GetDeviceCaps(shared_dc(),LOGPIXELSX); | |
#elif defined(Q_WS_MAC) | |
extern float qt_mac_defaultDpi_x(); //qpaintdevice_mac.cpp | |
dpi = qt_mac_defaultDpi_x(); | |
#elif defined(Q_WS_QWS) | |
if (!qt_screen) | |
return 72; | |
QScreen *screen = qt_screen; | |
const QList<QScreen*> subScreens = qt_screen->subScreens(); | |
if (!subScreens.isEmpty()) | |
screen = subScreens.at(0); | |
dpi = qRound(screen->width() / (screen->physicalWidth() / qreal(25.4))); | |
#elif defined(Q_OS_SYMBIAN) | |
dpi = S60->defaultDpiX; | |
#endif // Q_WS_X11 | |
return dpi; | |
} | |
Q_GUI_EXPORT int qt_defaultDpiY() | |
{ | |
if (!qt_is_gui_used) | |
return 75; | |
int dpi; | |
#ifdef Q_WS_X11 | |
dpi = QX11Info::appDpiY(); | |
#elif defined(Q_WS_WIN) | |
dpi = GetDeviceCaps(shared_dc(),LOGPIXELSY); | |
#elif defined(Q_WS_MAC) | |
extern float qt_mac_defaultDpi_y(); //qpaintdevice_mac.cpp | |
dpi = qt_mac_defaultDpi_y(); | |
#elif defined(Q_WS_QWS) | |
if (!qt_screen) | |
return 72; | |
QScreen *screen = qt_screen; | |
const QList<QScreen*> subScreens = qt_screen->subScreens(); | |
if (!subScreens.isEmpty()) | |
screen = subScreens.at(0); | |
dpi = qRound(screen->height() / (screen->physicalHeight() / qreal(25.4))); | |
#elif defined(Q_OS_SYMBIAN) | |
dpi = S60->defaultDpiY; | |
#endif // Q_WS_X11 | |
return dpi; | |
} | |
Q_GUI_EXPORT int qt_defaultDpi() | |
{ | |
return qt_defaultDpiY(); | |
} | |
QFontPrivate::QFontPrivate() | |
: engineData(0), dpi(qt_defaultDpi()), screen(0), | |
rawMode(false), underline(false), overline(false), strikeOut(false), kerning(true), | |
capital(0), letterSpacingIsAbsolute(false), scFont(0) | |
{ | |
#ifdef Q_WS_X11 | |
if (QX11Info::display()) | |
screen = QX11Info::appScreen(); | |
else | |
screen = 0; | |
#endif | |
#ifdef Q_WS_WIN | |
hdc = 0; | |
#endif | |
} | |
QFontPrivate::QFontPrivate(const QFontPrivate &other) | |
: request(other.request), engineData(0), dpi(other.dpi), screen(other.screen), | |
rawMode(other.rawMode), underline(other.underline), overline(other.overline), | |
strikeOut(other.strikeOut), kerning(other.kerning), | |
capital(other.capital), letterSpacingIsAbsolute(other.letterSpacingIsAbsolute), | |
letterSpacing(other.letterSpacing), wordSpacing(other.wordSpacing), | |
scFont(other.scFont) | |
{ | |
#ifdef Q_WS_WIN | |
hdc = other.hdc; | |
#endif | |
if (scFont && scFont != this) | |
scFont->ref.ref(); | |
} | |
QFontPrivate::~QFontPrivate() | |
{ | |
if (engineData) | |
engineData->ref.deref(); | |
engineData = 0; | |
if (scFont && scFont != this) | |
scFont->ref.deref(); | |
scFont = 0; | |
} | |
#if !defined(Q_WS_MAC) | |
extern QMutex *qt_fontdatabase_mutex(); | |
QFontEngine *QFontPrivate::engineForScript(int script) const | |
{ | |
QMutexLocker locker(qt_fontdatabase_mutex()); | |
if (script >= QUnicodeTables::Inherited) | |
script = QUnicodeTables::Common; | |
if (engineData && engineData->fontCache != QFontCache::instance()) { | |
// throw out engineData that came from a different thread | |
engineData->ref.deref(); | |
engineData = 0; | |
} | |
if (!engineData || !engineData->engines[script]) | |
QFontDatabase::load(this, script); | |
return engineData->engines[script]; | |
} | |
#else | |
QFontEngine *QFontPrivate::engineForScript(int script) const | |
{ | |
extern QMutex *qt_fontdatabase_mutex(); | |
QMutexLocker locker(qt_fontdatabase_mutex()); | |
if (script >= QUnicodeTables::Inherited) | |
script = QUnicodeTables::Common; | |
if (engineData && engineData->fontCache != QFontCache::instance()) { | |
// throw out engineData that came from a different thread | |
engineData->ref.deref(); | |
engineData = 0; | |
} | |
if (!engineData || !engineData->engine) | |
QFontDatabase::load(this, script); | |
return engineData->engine; | |
} | |
#endif | |
void QFontPrivate::alterCharForCapitalization(QChar &c) const { | |
switch (capital) { | |
case QFont::AllUppercase: | |
case QFont::SmallCaps: | |
c = c.toUpper(); | |
break; | |
case QFont::AllLowercase: | |
c = c.toLower(); | |
break; | |
case QFont::MixedCase: | |
break; | |
} | |
} | |
QFontPrivate *QFontPrivate::smallCapsFontPrivate() const | |
{ | |
if (scFont) | |
return scFont; | |
QFont font(const_cast<QFontPrivate *>(this)); | |
qreal pointSize = font.pointSizeF(); | |
if (pointSize > 0) | |
font.setPointSizeF(pointSize * .7); | |
else | |
font.setPixelSize((font.pixelSize() * 7 + 5) / 10); | |
scFont = font.d.data(); | |
if (scFont != this) | |
scFont->ref.ref(); | |
return scFont; | |
} | |
void QFontPrivate::resolve(uint mask, const QFontPrivate *other) | |
{ | |
Q_ASSERT(other != 0); | |
dpi = other->dpi; | |
if ((mask & QFont::AllPropertiesResolved) == QFont::AllPropertiesResolved) return; | |
// assign the unset-bits with the set-bits of the other font def | |
if (! (mask & QFont::FamilyResolved)) | |
request.family = other->request.family; | |
if (! (mask & QFont::SizeResolved)) { | |
request.pointSize = other->request.pointSize; | |
request.pixelSize = other->request.pixelSize; | |
} | |
if (! (mask & QFont::StyleHintResolved)) | |
request.styleHint = other->request.styleHint; | |
if (! (mask & QFont::StyleStrategyResolved)) | |
request.styleStrategy = other->request.styleStrategy; | |
if (! (mask & QFont::WeightResolved)) | |
request.weight = other->request.weight; | |
if (! (mask & QFont::StyleResolved)) | |
request.style = other->request.style; | |
if (! (mask & QFont::FixedPitchResolved)) | |
request.fixedPitch = other->request.fixedPitch; | |
if (! (mask & QFont::StretchResolved)) | |
request.stretch = other->request.stretch; | |
if (! (mask & QFont::UnderlineResolved)) | |
underline = other->underline; | |
if (! (mask & QFont::OverlineResolved)) | |
overline = other->overline; | |
if (! (mask & QFont::StrikeOutResolved)) | |
strikeOut = other->strikeOut; | |
if (! (mask & QFont::KerningResolved)) | |
kerning = other->kerning; | |
if (! (mask & QFont::LetterSpacingResolved)) { | |
letterSpacing = other->letterSpacing; | |
letterSpacingIsAbsolute = other->letterSpacingIsAbsolute; | |
} | |
if (! (mask & QFont::WordSpacingResolved)) | |
wordSpacing = other->wordSpacing; | |
if (! (mask & QFont::CapitalizationResolved)) | |
capital = other->capital; | |
} | |
QFontEngineData::QFontEngineData() | |
: ref(1), fontCache(QFontCache::instance()) | |
{ | |
#if !defined(Q_WS_MAC) | |
memset(engines, 0, QUnicodeTables::ScriptCount * sizeof(QFontEngine *)); | |
#else | |
engine = 0; | |
#endif | |
} | |
QFontEngineData::~QFontEngineData() | |
{ | |
#if !defined(Q_WS_MAC) | |
for (int i = 0; i < QUnicodeTables::ScriptCount; ++i) { | |
if (engines[i]) | |
engines[i]->ref.deref(); | |
engines[i] = 0; | |
} | |
#else | |
if (engine) | |
engine->ref.deref(); | |
engine = 0; | |
#endif // Q_WS_X11 || Q_WS_WIN || Q_WS_MAC | |
} | |
/*! | |
\class QFont | |
\reentrant | |
\brief The QFont class specifies a font used for drawing text. | |
\ingroup painting | |
\ingroup appearance | |
\ingroup shared | |
\ingroup richtext-processing | |
When you create a QFont object you specify various attributes that | |
you want the font to have. Qt will use the font with the specified | |
attributes, or if no matching font exists, Qt will use the closest | |
matching installed font. The attributes of the font that is | |
actually used are retrievable from a QFontInfo object. If the | |
window system provides an exact match exactMatch() returns true. | |
Use QFontMetrics to get measurements, e.g. the pixel length of a | |
string using QFontMetrics::width(). | |
Note that a QApplication instance must exist before a QFont can be | |
used. You can set the application's default font with | |
QApplication::setFont(). | |
If a chosen font does not include all the characters that | |
need to be displayed, QFont will try to find the characters in the | |
nearest equivalent fonts. When a QPainter draws a character from a | |
font the QFont will report whether or not it has the character; if | |
it does not, QPainter will draw an unfilled square. | |
Create QFonts like this: | |
\snippet doc/src/snippets/code/src_gui_text_qfont.cpp 0 | |
The attributes set in the constructor can also be set later, e.g. | |
setFamily(), setPointSize(), setPointSizeFloat(), setWeight() and | |
setItalic(). The remaining attributes must be set after | |
contstruction, e.g. setBold(), setUnderline(), setOverline(), | |
setStrikeOut() and setFixedPitch(). QFontInfo objects should be | |
created \e after the font's attributes have been set. A QFontInfo | |
object will not change, even if you change the font's | |
attributes. The corresponding "get" functions, e.g. family(), | |
pointSize(), etc., return the values that were set, even though | |
the values used may differ. The actual values are available from a | |
QFontInfo object. | |
If the requested font family is unavailable you can influence the | |
\link #fontmatching font matching algorithm\endlink by choosing a | |
particular \l{QFont::StyleHint} and \l{QFont::StyleStrategy} with | |
setStyleHint(). The default family (corresponding to the current | |
style hint) is returned by defaultFamily(). | |
The font-matching algorithm has a lastResortFamily() and | |
lastResortFont() in cases where a suitable match cannot be found. | |
You can provide substitutions for font family names using | |
insertSubstitution() and insertSubstitutions(). Substitutions can | |
be removed with removeSubstitution(). Use substitute() to retrieve | |
a family's first substitute, or the family name itself if it has | |
no substitutes. Use substitutes() to retrieve a list of a family's | |
substitutes (which may be empty). | |
Every QFont has a key() which you can use, for example, as the key | |
in a cache or dictionary. If you want to store a user's font | |
preferences you could use QSettings, writing the font information | |
with toString() and reading it back with fromString(). The | |
operator<<() and operator>>() functions are also available, but | |
they work on a data stream. | |
It is possible to set the height of characters shown on the screen | |
to a specified number of pixels with setPixelSize(); however using | |
setPointSize() has a similar effect and provides device | |
independence. | |
In X11 you can set a font using its system | |
specific name with setRawName(). | |
Loading fonts can be expensive, especially on X11. QFont contains | |
extensive optimizations to make the copying of QFont objects fast, | |
and to cache the results of the slow window system functions it | |
depends upon. | |
\target fontmatching | |
The font matching algorithm works as follows: | |
\list 1 | |
\o The specified font family is searched for. | |
\o If not found, the styleHint() is used to select a replacement | |
family. | |
\o Each replacement font family is searched for. | |
\o If none of these are found or there was no styleHint(), "helvetica" | |
will be searched for. | |
\o If "helvetica" isn't found Qt will try the lastResortFamily(). | |
\o If the lastResortFamily() isn't found Qt will try the | |
lastResortFont() which will always return a name of some kind. | |
\endlist | |
Note that the actual font matching algorithm varies from platform to platform. | |
In Windows a request for the "Courier" font is automatically changed to | |
"Courier New", an improved version of Courier that allows for smooth scaling. | |
The older "Courier" bitmap font can be selected by setting the PreferBitmap | |
style strategy (see setStyleStrategy()). | |
Once a font is found, the remaining attributes are matched in order of | |
priority: | |
\list 1 | |
\o fixedPitch() | |
\o pointSize() (see below) | |
\o weight() | |
\o style() | |
\endlist | |
If you have a font which matches on family, even if none of the | |
other attributes match, this font will be chosen in preference to | |
a font which doesn't match on family but which does match on the | |
other attributes. This is because font family is the dominant | |
search criteria. | |
The point size is defined to match if it is within 20% of the | |
requested point size. When several fonts match and are only | |
distinguished by point size, the font with the closest point size | |
to the one requested will be chosen. | |
The actual family, font size, weight and other font attributes | |
used for drawing text will depend on what's available for the | |
chosen family under the window system. A QFontInfo object can be | |
used to determine the actual values used for drawing the text. | |
Examples: | |
\snippet doc/src/snippets/code/src_gui_text_qfont.cpp 1 | |
If you had both an Adobe and a Cronyx Helvetica, you might get | |
either. | |
\snippet doc/src/snippets/code/src_gui_text_qfont.cpp 2 | |
You can specify the foundry you want in the family name. The font f | |
in the above example will be set to "Helvetica | |
[Cronyx]". | |
To determine the attributes of the font actually used in the window | |
system, use a QFontInfo object, e.g. | |
\snippet doc/src/snippets/code/src_gui_text_qfont.cpp 3 | |
To find out font metrics use a QFontMetrics object, e.g. | |
\snippet doc/src/snippets/code/src_gui_text_qfont.cpp 4 | |
For more general information on fonts, see the | |
\link http://nwalsh.com/comp.fonts/FAQ/ comp.fonts FAQ.\endlink | |
Information on encodings can be found from | |
\link http://czyborra.com/ Roman Czyborra's\endlink page. | |
\sa QFontComboBox, QFontMetrics, QFontInfo, QFontDatabase, {Character Map Example} | |
*/ | |
/*! | |
\internal | |
\enum QFont::ResolveProperties | |
This enum describes the properties of a QFont that can be set on a font | |
individually and then considered resolved. | |
\value FamilyResolved | |
\value SizeResolved | |
\value StyleHintResolved | |
\value StyleStrategyResolved | |
\value WeightResolved | |
\value StyleResolved | |
\value UnderlineResolved | |
\value OverlineResolved | |
\value StrikeOutResolved | |
\value FixedPitchResolved | |
\value StretchResolved | |
\value KerningResolved | |
\value CapitalizationResolved | |
\value LetterSpacingResolved | |
\value WordSpacingResolved | |
\value CompletelyResolved | |
*/ | |
/*! | |
\enum QFont::Style | |
This enum describes the different styles of glyphs that are used to | |
display text. | |
\value StyleNormal Normal glyphs used in unstyled text. | |
\value StyleItalic Italic glyphs that are specifically designed for | |
the purpose of representing italicized text. | |
\value StyleOblique Glyphs with an italic appearance that are typically | |
based on the unstyled glyphs, but are not fine-tuned | |
for the purpose of representing italicized text. | |
\sa Weight | |
*/ | |
/*! | |
\fn Qt::HANDLE QFont::handle() const | |
Returns the window system handle to the font, for low-level | |
access. Using this function is \e not portable. | |
*/ | |
/*! | |
\fn FT_Face QFont::freetypeFace() const | |
Returns the handle to the primary FreeType face of the font. If font merging is not disabled a | |
QFont can contain several physical fonts. | |
Returns 0 if the font does not contain a FreeType face. | |
\note This function is only available on platforms that provide the FreeType library; | |
i.e., X11 and some Embedded Linux platforms. | |
*/ | |
/*! | |
\fn QString QFont::rawName() const | |
Returns the name of the font within the underlying window system. | |
On X11, this function will return an empty string if Qt is built with | |
FontConfig support; otherwise the XLFD (X Logical Font Description) is | |
returned. | |
Using the return value of this function is usually \e not \e | |
portable. | |
\sa setRawName() | |
*/ | |
/*! | |
\fn void QFont::setRawName(const QString &name) | |
Sets a font by its system specific name. The function is | |
particularly useful under X, where system font settings (for | |
example X resources) are usually available in XLFD (X Logical Font | |
Description) form only. You can pass an XLFD as \a name to this | |
function. | |
A font set with setRawName() is still a full-featured QFont. It can | |
be queried (for example with italic()) or modified (for example with | |
setItalic()) and is therefore also suitable for rendering rich text. | |
If Qt's internal font database cannot resolve the raw name, the | |
font becomes a raw font with \a name as its family. | |
Note that the present implementation does not handle wildcards in | |
XLFDs well, and that font aliases (file \c fonts.alias in the font | |
directory on X11) are not supported. | |
\sa rawName(), setRawMode(), setFamily() | |
*/ | |
/*! | |
\fn QString QFont::lastResortFamily() const | |
Returns the "last resort" font family name. | |
The current implementation tries a wide variety of common fonts, | |
returning the first one it finds. Is is possible that no family is | |
found in which case an empty string is returned. | |
\sa lastResortFont() | |
*/ | |
/*! | |
\fn QString QFont::defaultFamily() const | |
Returns the family name that corresponds to the current style | |
hint. | |
\sa StyleHint styleHint() setStyleHint() | |
*/ | |
/*! | |
\fn QString QFont::lastResortFont() const | |
Returns a "last resort" font name for the font matching algorithm. | |
This is used if the last resort family is not available. It will | |
always return a name, if necessary returning something like | |
"fixed" or "system". | |
The current implementation tries a wide variety of common fonts, | |
returning the first one it finds. The implementation may change | |
at any time, but this function will always return a string | |
containing something. | |
It is theoretically possible that there really isn't a | |
lastResortFont() in which case Qt will abort with an error | |
message. We have not been able to identify a case where this | |
happens. Please \link bughowto.html report it as a bug\endlink if | |
it does, preferably with a list of the fonts you have installed. | |
\sa lastResortFamily() rawName() | |
*/ | |
/*! | |
Constructs a font from \a font for use on the paint device \a pd. | |
*/ | |
QFont::QFont(const QFont &font, QPaintDevice *pd) | |
: resolve_mask(font.resolve_mask) | |
{ | |
Q_ASSERT(pd != 0); | |
int dpi = pd->logicalDpiY(); | |
#ifdef Q_WS_X11 | |
const QX11Info *info = qt_x11Info(pd); | |
int screen = info ? info->screen() : 0; | |
#else | |
const int screen = 0; | |
#endif | |
if (font.d->dpi != dpi || font.d->screen != screen ) { | |
d = new QFontPrivate(*font.d); | |
d->dpi = dpi; | |
d->screen = screen; | |
} else { | |
d = font.d.data(); | |
} | |
#ifdef Q_WS_WIN | |
if (pd->devType() == QInternal::Printer && pd->getDC()) | |
d->hdc = pd->getDC(); | |
#endif | |
} | |
/*! | |
\internal | |
*/ | |
QFont::QFont(QFontPrivate *data) | |
: d(data), resolve_mask(QFont::AllPropertiesResolved) | |
{ | |
} | |
/*! \internal | |
Detaches the font object from common font data. | |
*/ | |
void QFont::detach() | |
{ | |
if (d->ref == 1) { | |
if (d->engineData) | |
d->engineData->ref.deref(); | |
d->engineData = 0; | |
if (d->scFont && d->scFont != d.data()) | |
d->scFont->ref.deref(); | |
d->scFont = 0; | |
return; | |
} | |
d.detach(); | |
} | |
/*! | |
Constructs a font object that uses the application's default font. | |
\sa QApplication::setFont(), QApplication::font() | |
*/ | |
QFont::QFont() | |
: d(QApplication::font().d.data()), resolve_mask(0) | |
{ | |
} | |
/*! | |
Constructs a font object with the specified \a family, \a | |
pointSize, \a weight and \a italic settings. | |
If \a pointSize is zero or negative, the point size of the font | |
is set to a system-dependent default value. Generally, this is | |
12 points, except on Symbian where it is 7 points. | |
The \a family name may optionally also include a foundry name, | |
e.g. "Helvetica [Cronyx]". If the \a family is | |
available from more than one foundry and the foundry isn't | |
specified, an arbitrary foundry is chosen. If the family isn't | |
available a family will be set using the \l{QFont}{font matching} | |
algorithm. | |
\sa Weight, setFamily(), setPointSize(), setWeight(), setItalic(), | |
setStyleHint() QApplication::font() | |
*/ | |
QFont::QFont(const QString &family, int pointSize, int weight, bool italic) | |
: d(new QFontPrivate()), resolve_mask(QFont::FamilyResolved) | |
{ | |
if (pointSize <= 0) { | |
#ifdef Q_OS_SYMBIAN | |
pointSize = 7; | |
#else | |
pointSize = 12; | |
#endif | |
} else { | |
resolve_mask |= QFont::SizeResolved; | |
} | |
if (weight < 0) { | |
weight = Normal; | |
} else { | |
resolve_mask |= QFont::WeightResolved | QFont::StyleResolved; | |
} | |
if (italic) | |
resolve_mask |= QFont::StyleResolved; | |
d->request.family = family; | |
d->request.pointSize = qreal(pointSize); | |
d->request.pixelSize = -1; | |
d->request.weight = weight; | |
d->request.style = italic ? QFont::StyleItalic : QFont::StyleNormal; | |
} | |
/*! | |
Constructs a font that is a copy of \a font. | |
*/ | |
QFont::QFont(const QFont &font) | |
: d(font.d.data()), resolve_mask(font.resolve_mask) | |
{ | |
} | |
/*! | |
Destroys the font object and frees all allocated resources. | |
*/ | |
QFont::~QFont() | |
{ | |
} | |
/*! | |
Assigns \a font to this font and returns a reference to it. | |
*/ | |
QFont &QFont::operator=(const QFont &font) | |
{ | |
d = font.d.data(); | |
resolve_mask = font.resolve_mask; | |
return *this; | |
} | |
/*! | |
Returns the requested font family name, i.e. the name set in the | |
constructor or the last setFont() call. | |
\sa setFamily() substitutes() substitute() | |
*/ | |
QString QFont::family() const | |
{ | |
return d->request.family; | |
} | |
/*! | |
Sets the family name of the font. The name is case insensitive and | |
may include a foundry name. | |
The \a family name may optionally also include a foundry name, | |
e.g. "Helvetica [Cronyx]". If the \a family is | |
available from more than one foundry and the foundry isn't | |
specified, an arbitrary foundry is chosen. If the family isn't | |
available a family will be set using the \l{QFont}{font matching} | |
algorithm. | |
\sa family(), setStyleHint(), QFontInfo | |
*/ | |
void QFont::setFamily(const QString &family) | |
{ | |
detach(); | |
d->request.family = family; | |
#if defined(Q_WS_X11) | |
d->request.addStyle.clear(); | |
#endif // Q_WS_X11 | |
resolve_mask |= QFont::FamilyResolved; | |
} | |
/*! | |
Returns the point size of the font. Returns -1 if the font size | |
was specified in pixels. | |
\sa setPointSize() pointSizeF() | |
*/ | |
int QFont::pointSize() const | |
{ | |
return qRound(d->request.pointSize); | |
} | |
/*! | |
Sets the point size to \a pointSize. The point size must be | |
greater than zero. | |
\sa pointSize() setPointSizeF() | |
*/ | |
void QFont::setPointSize(int pointSize) | |
{ | |
if (pointSize <= 0) { | |
qWarning("QFont::setPointSize: Point size <= 0 (%d), must be greater than 0", pointSize); | |
return; | |
} | |
detach(); | |
d->request.pointSize = qreal(pointSize); | |
d->request.pixelSize = -1; | |
resolve_mask |= QFont::SizeResolved; | |
} | |
/*! | |
Sets the point size to \a pointSize. The point size must be | |
greater than zero. The requested precision may not be achieved on | |
all platforms. | |
\sa pointSizeF() setPointSize() setPixelSize() | |
*/ | |
void QFont::setPointSizeF(qreal pointSize) | |
{ | |
if (pointSize <= 0) { | |
qWarning("QFont::setPointSizeF: Point size <= 0 (%f), must be greater than 0", pointSize); | |
return; | |
} | |
detach(); | |
d->request.pointSize = pointSize; | |
d->request.pixelSize = -1; | |
resolve_mask |= QFont::SizeResolved; | |
} | |
/*! | |
Returns the point size of the font. Returns -1 if the font size was | |
specified in pixels. | |
\sa pointSize() setPointSizeF() pixelSize() QFontInfo::pointSize() QFontInfo::pixelSize() | |
*/ | |
qreal QFont::pointSizeF() const | |
{ | |
return d->request.pointSize; | |
} | |
/*! | |
Sets the font size to \a pixelSize pixels. | |
Using this function makes the font device dependent. Use | |
setPointSize() or setPointSizeF() to set the size of the font | |
in a device independent manner. | |
\sa pixelSize() | |
*/ | |
void QFont::setPixelSize(int pixelSize) | |
{ | |
if (pixelSize <= 0) { | |
qWarning("QFont::setPixelSize: Pixel size <= 0 (%d)", pixelSize); | |
return; | |
} | |
detach(); | |
d->request.pixelSize = pixelSize; | |
d->request.pointSize = -1; | |
resolve_mask |= QFont::SizeResolved; | |
} | |
/*! | |
Returns the pixel size of the font if it was set with | |
setPixelSize(). Returns -1 if the size was set with setPointSize() | |
or setPointSizeF(). | |
\sa setPixelSize() pointSize() QFontInfo::pointSize() QFontInfo::pixelSize() | |
*/ | |
int QFont::pixelSize() const | |
{ | |
return d->request.pixelSize; | |
} | |
#ifdef QT3_SUPPORT | |
/*! \obsolete | |
Sets the logical pixel height of font characters when shown on | |
the screen to \a pixelSize. | |
*/ | |
void QFont::setPixelSizeFloat(qreal pixelSize) | |
{ | |
setPixelSize((int)pixelSize); | |
} | |
#endif | |
/*! | |
\fn bool QFont::italic() const | |
Returns true if the style() of the font is not QFont::StyleNormal | |
\sa setItalic() style() | |
*/ | |
/*! | |
\fn void QFont::setItalic(bool enable) | |
Sets the style() of the font to QFont::StyleItalic if \a enable is true; | |
otherwise the style is set to QFont::StyleNormal. | |
\sa italic() QFontInfo | |
*/ | |
/*! | |
Returns the style of the font. | |
\sa setStyle() | |
*/ | |
QFont::Style QFont::style() const | |
{ | |
return (QFont::Style)d->request.style; | |
} | |
/*! | |
Sets the style of the font to \a style. | |
\sa italic(), QFontInfo | |
*/ | |
void QFont::setStyle(Style style) | |
{ | |
detach(); | |
d->request.style = style; | |
resolve_mask |= QFont::StyleResolved; | |
} | |
/*! | |
Returns the weight of the font which is one of the enumerated | |
values from \l{QFont::Weight}. | |
\sa setWeight(), Weight, QFontInfo | |
*/ | |
int QFont::weight() const | |
{ | |
return d->request.weight; | |
} | |
/*! | |
\enum QFont::Weight | |
Qt uses a weighting scale from 0 to 99 similar to, but not the | |
same as, the scales used in Windows or CSS. A weight of 0 is | |
ultralight, whilst 99 will be an extremely black. | |
This enum contains the predefined font weights: | |
\value Light 25 | |
\value Normal 50 | |
\value DemiBold 63 | |
\value Bold 75 | |
\value Black 87 | |
*/ | |
/*! | |
Sets the weight the font to \a weight, which should be a value | |
from the \l QFont::Weight enumeration. | |
\sa weight(), QFontInfo | |
*/ | |
void QFont::setWeight(int weight) | |
{ | |
Q_ASSERT_X(weight >= 0 && weight <= 99, "QFont::setWeight", "Weight must be between 0 and 99"); | |
detach(); | |
d->request.weight = weight; | |
resolve_mask |= QFont::WeightResolved; | |
} | |
/*! | |
\fn bool QFont::bold() const | |
Returns true if weight() is a value greater than \link Weight | |
QFont::Normal \endlink; otherwise returns false. | |
\sa weight(), setBold(), QFontInfo::bold() | |
*/ | |
/*! | |
\fn void QFont::setBold(bool enable) | |
If \a enable is true sets the font's weight to \link Weight | |
QFont::Bold \endlink; otherwise sets the weight to \link Weight | |
QFont::Normal\endlink. | |
For finer boldness control use setWeight(). | |
\sa bold(), setWeight() | |
*/ | |
/*! | |
Returns true if underline has been set; otherwise returns false. | |
\sa setUnderline() | |
*/ | |
bool QFont::underline() const | |
{ | |
return d->underline; | |
} | |
/*! | |
If \a enable is true, sets underline on; otherwise sets underline | |
off. | |
\sa underline(), QFontInfo | |
*/ | |
void QFont::setUnderline(bool enable) | |
{ | |
detach(); | |
d->underline = enable; | |
resolve_mask |= QFont::UnderlineResolved; | |
} | |
/*! | |
Returns true if overline has been set; otherwise returns false. | |
\sa setOverline() | |
*/ | |
bool QFont::overline() const | |
{ | |
return d->overline; | |
} | |
/*! | |
If \a enable is true, sets overline on; otherwise sets overline off. | |
\sa overline(), QFontInfo | |
*/ | |
void QFont::setOverline(bool enable) | |
{ | |
detach(); | |
d->overline = enable; | |
resolve_mask |= QFont::OverlineResolved; | |
} | |
/*! | |
Returns true if strikeout has been set; otherwise returns false. | |
\sa setStrikeOut() | |
*/ | |
bool QFont::strikeOut() const | |
{ | |
return d->strikeOut; | |
} | |
/*! | |
If \a enable is true, sets strikeout on; otherwise sets strikeout | |
off. | |
\sa strikeOut(), QFontInfo | |
*/ | |
void QFont::setStrikeOut(bool enable) | |
{ | |
detach(); | |
d->strikeOut = enable; | |
resolve_mask |= QFont::StrikeOutResolved; | |
} | |
/*! | |
Returns true if fixed pitch has been set; otherwise returns false. | |
\sa setFixedPitch(), QFontInfo::fixedPitch() | |
*/ | |
bool QFont::fixedPitch() const | |
{ | |
return d->request.fixedPitch; | |
} | |
/*! | |
If \a enable is true, sets fixed pitch on; otherwise sets fixed | |
pitch off. | |
\sa fixedPitch(), QFontInfo | |
*/ | |
void QFont::setFixedPitch(bool enable) | |
{ | |
detach(); | |
d->request.fixedPitch = enable; | |
d->request.ignorePitch = false; | |
resolve_mask |= QFont::FixedPitchResolved; | |
} | |
/*! | |
Returns true if kerning should be used when drawing text with this font. | |
\sa setKerning() | |
*/ | |
bool QFont::kerning() const | |
{ | |
return d->kerning; | |
} | |
/*! | |
Enables kerning for this font if \a enable is true; otherwise | |
disables it. By default, kerning is enabled. | |
When kerning is enabled, glyph metrics do not add up anymore, | |
even for Latin text. In other words, the assumption that | |
width('a') + width('b') is equal to width("ab") is not | |
neccesairly true. | |
\sa kerning(), QFontMetrics | |
*/ | |
void QFont::setKerning(bool enable) | |
{ | |
detach(); | |
d->kerning = enable; | |
resolve_mask |= QFont::KerningResolved; | |
} | |
/*! | |
Returns the StyleStrategy. | |
The style strategy affects the \l{QFont}{font matching} algorithm. | |
See \l QFont::StyleStrategy for the list of available strategies. | |
\sa setStyleHint() QFont::StyleHint | |
*/ | |
QFont::StyleStrategy QFont::styleStrategy() const | |
{ | |
return (StyleStrategy) d->request.styleStrategy; | |
} | |
/*! | |
Returns the StyleHint. | |
The style hint affects the \l{QFont}{font matching} algorithm. | |
See \l QFont::StyleHint for the list of available hints. | |
\sa setStyleHint(), QFont::StyleStrategy QFontInfo::styleHint() | |
*/ | |
QFont::StyleHint QFont::styleHint() const | |
{ | |
return (StyleHint) d->request.styleHint; | |
} | |
/*! | |
\enum QFont::StyleHint | |
Style hints are used by the \l{QFont}{font matching} algorithm to | |
find an appropriate default family if a selected font family is | |
not available. | |
\value AnyStyle leaves the font matching algorithm to choose the | |
family. This is the default. | |
\value SansSerif the font matcher prefer sans serif fonts. | |
\value Helvetica is a synonym for \c SansSerif. | |
\value Serif the font matcher prefers serif fonts. | |
\value Times is a synonym for \c Serif. | |
\value TypeWriter the font matcher prefers fixed pitch fonts. | |
\value Courier a synonym for \c TypeWriter. | |
\value OldEnglish the font matcher prefers decorative fonts. | |
\value Decorative is a synonym for \c OldEnglish. | |
\value Monospace the font matcher prefers fonts that map to the | |
CSS generic font-family 'monospace'. | |
\value Fantasy the font matcher prefers fonts that map to the | |
CSS generic font-family 'fantasy'. | |
\value Cursive the font matcher prefers fonts that map to the | |
CSS generic font-family 'cursive'. | |
\value System the font matcher prefers system fonts. | |
*/ | |
/*! | |
\enum QFont::StyleStrategy | |
The style strategy tells the \l{QFont}{font matching} algorithm | |
what type of fonts should be used to find an appropriate default | |
family. | |
The following strategies are available: | |
\value PreferDefault the default style strategy. It does not prefer | |
any type of font. | |
\value PreferBitmap prefers bitmap fonts (as opposed to outline | |
fonts). | |
\value PreferDevice prefers device fonts. | |
\value PreferOutline prefers outline fonts (as opposed to bitmap fonts). | |
\value ForceOutline forces the use of outline fonts. | |
\value NoAntialias don't antialias the fonts. | |
\value PreferAntialias antialias if possible. | |
\value OpenGLCompatible forces the use of OpenGL compatible | |
fonts. | |
\value NoFontMerging If the font selected for a certain writing system | |
does not contain a character requested to draw, then Qt automatically chooses a similar | |
looking font that contains the character. The NoFontMerging flag disables this feature. | |
Please note that enabling this flag will not prevent Qt from automatically picking a | |
suitable font when the selected font does not support the writing system of the text. | |
Any of these may be OR-ed with one of these flags: | |
\value PreferMatch prefer an exact match. The font matcher will try to | |
use the exact font size that has been specified. | |
\value PreferQuality prefer the best quality font. The font matcher | |
will use the nearest standard point size that the font | |
supports. | |
\value ForceIntegerMetrics forces the use of integer values in font engines that support fractional | |
font metrics. | |
*/ | |
/*! | |
Sets the style hint and strategy to \a hint and \a strategy, | |
respectively. | |
If these aren't set explicitly the style hint will default to | |
\c AnyStyle and the style strategy to \c PreferDefault. | |
Qt does not support style hints on X11 since this information | |
is not provided by the window system. | |
\sa StyleHint, styleHint(), StyleStrategy, styleStrategy(), QFontInfo | |
*/ | |
void QFont::setStyleHint(StyleHint hint, StyleStrategy strategy) | |
{ | |
detach(); | |
if ((resolve_mask & (QFont::StyleHintResolved | QFont::StyleStrategyResolved)) && | |
(StyleHint) d->request.styleHint == hint && | |
(StyleStrategy) d->request.styleStrategy == strategy) | |
return; | |
d->request.styleHint = hint; | |
d->request.styleStrategy = strategy; | |
resolve_mask |= QFont::StyleHintResolved; | |
resolve_mask |= QFont::StyleStrategyResolved; | |
#if defined(Q_WS_X11) | |
d->request.addStyle.clear(); | |
#endif // Q_WS_X11 | |
} | |
/*! | |
Sets the style strategy for the font to \a s. | |
\sa QFont::StyleStrategy | |
*/ | |
void QFont::setStyleStrategy(StyleStrategy s) | |
{ | |
detach(); | |
if ((resolve_mask & QFont::StyleStrategyResolved) && | |
s == (StyleStrategy)d->request.styleStrategy) | |
return; | |
d->request.styleStrategy = s; | |
resolve_mask |= QFont::StyleStrategyResolved; | |
} | |
/*! | |
\enum QFont::Stretch | |
Predefined stretch values that follow the CSS naming convention. The higher | |
the value, the more stretched the text is. | |
\value UltraCondensed 50 | |
\value ExtraCondensed 62 | |
\value Condensed 75 | |
\value SemiCondensed 87 | |
\value Unstretched 100 | |
\value SemiExpanded 112 | |
\value Expanded 125 | |
\value ExtraExpanded 150 | |
\value UltraExpanded 200 | |
\sa setStretch() stretch() | |
*/ | |
/*! | |
Returns the stretch factor for the font. | |
\sa setStretch() | |
*/ | |
int QFont::stretch() const | |
{ | |
return d->request.stretch; | |
} | |
/*! | |
Sets the stretch factor for the font. | |
The stretch factor changes the width of all characters in the font | |
by \a factor percent. For example, setting \a factor to 150 | |
results in all characters in the font being 1.5 times (ie. 150%) | |
wider. The default stretch factor is 100. The minimum stretch | |
factor is 1, and the maximum stretch factor is 4000. | |
The stretch factor is only applied to outline fonts. The stretch | |
factor is ignored for bitmap fonts. | |
NOTE: QFont cannot stretch XLFD fonts. When loading XLFD fonts on | |
X11, the stretch factor is matched against a predefined set of | |
values for the SETWIDTH_NAME field of the XLFD. | |
\sa stretch() QFont::Stretch | |
*/ | |
void QFont::setStretch(int factor) | |
{ | |
if (factor < 1 || factor > 4000) { | |
qWarning("QFont::setStretch: Parameter '%d' out of range", factor); | |
return; | |
} | |
if ((resolve_mask & QFont::StretchResolved) && | |
d->request.stretch == (uint)factor) | |
return; | |
detach(); | |
d->request.stretch = (uint)factor; | |
resolve_mask |= QFont::StretchResolved; | |
} | |
/*! | |
\enum QFont::SpacingType | |
\since 4.4 | |
\value PercentageSpacing A value of 100 will keep the spacing unchanged; a value of 200 will enlarge the | |
spacing after a character by the width of the character itself. | |
\value AbsoluteSpacing A positive value increases the letter spacing by the corresponding pixels; a negative | |
value decreases the spacing. | |
*/ | |
/*! | |
\since 4.4 | |
Returns the letter spacing for the font. | |
\sa setLetterSpacing(), letterSpacingType(), setWordSpacing() | |
*/ | |
qreal QFont::letterSpacing() const | |
{ | |
return d->letterSpacing.toReal(); | |
} | |
/*! | |
\since 4.4 | |
Sets the letter spacing for the font to \a spacing and the type | |
of spacing to \a type. | |
Letter spacing changes the default spacing between individual | |
letters in the font. The spacing between the letters can be | |
made smaller as well as larger. | |
\sa letterSpacing(), letterSpacingType(), setWordSpacing() | |
*/ | |
void QFont::setLetterSpacing(SpacingType type, qreal spacing) | |
{ | |
const QFixed newSpacing = QFixed::fromReal(spacing); | |
const bool absoluteSpacing = type == AbsoluteSpacing; | |
if ((resolve_mask & QFont::LetterSpacingResolved) && | |
d->letterSpacingIsAbsolute == absoluteSpacing && | |
d->letterSpacing == newSpacing) | |
return; | |
detach(); | |
d->letterSpacing = newSpacing; | |
d->letterSpacingIsAbsolute = absoluteSpacing; | |
resolve_mask |= QFont::LetterSpacingResolved; | |
} | |
/*! | |
\since 4.4 | |
Returns the spacing type used for letter spacing. | |
\sa letterSpacing(), setLetterSpacing(), setWordSpacing() | |
*/ | |
QFont::SpacingType QFont::letterSpacingType() const | |
{ | |
return d->letterSpacingIsAbsolute ? AbsoluteSpacing : PercentageSpacing; | |
} | |
/*! | |
\since 4.4 | |
Returns the word spacing for the font. | |
\sa setWordSpacing(), setLetterSpacing() | |
*/ | |
qreal QFont::wordSpacing() const | |
{ | |
return d->wordSpacing.toReal(); | |
} | |
/*! | |
\since 4.4 | |
Sets the word spacing for the font to \a spacing. | |
Word spacing changes the default spacing between individual | |
words. A positive value increases the word spacing | |
by a corresponding amount of pixels, while a negative value | |
decreases the inter-word spacing accordingly. | |
Word spacing will not apply to writing systems, where indiviaul | |
words are not separated by white space. | |
\sa wordSpacing(), setLetterSpacing() | |
*/ | |
void QFont::setWordSpacing(qreal spacing) | |
{ | |
const QFixed newSpacing = QFixed::fromReal(spacing); | |
if ((resolve_mask & QFont::WordSpacingResolved) && | |
d->wordSpacing == newSpacing) | |
return; | |
detach(); | |
d->wordSpacing = newSpacing; | |
resolve_mask |= QFont::WordSpacingResolved; | |
} | |
/*! | |
\enum QFont::Capitalization | |
\since 4.4 | |
Rendering option for text this font applies to. | |
\value MixedCase This is the normal text rendering option where no capitalization change is applied. | |
\value AllUppercase This alters the text to be rendered in all uppercase type. | |
\value AllLowercase This alters the text to be rendered in all lowercase type. | |
\value SmallCaps This alters the text to be rendered in small-caps type. | |
\value Capitalize This alters the text to be rendered with the first character of each word as an uppercase character. | |
*/ | |
/*! | |
\since 4.4 | |
Sets the capitalization of the text in this font to \a caps. | |
A font's capitalization makes the text appear in the selected capitalization mode. | |
\sa capitalization() | |
*/ | |
void QFont::setCapitalization(Capitalization caps) | |
{ | |
if ((resolve_mask & QFont::CapitalizationResolved) && | |
capitalization() == caps) | |
return; | |
detach(); | |
d->capital = caps; | |
resolve_mask |= QFont::CapitalizationResolved; | |
} | |
/*! | |
\since 4.4 | |
Returns the current capitalization type of the font. | |
\sa setCapitalization() | |
*/ | |
QFont::Capitalization QFont::capitalization() const | |
{ | |
return static_cast<QFont::Capitalization> (d->capital); | |
} | |
/*! | |
If \a enable is true, turns raw mode on; otherwise turns raw mode | |
off. This function only has an effect under X11. | |
If raw mode is enabled, Qt will search for an X font with a | |
complete font name matching the family name, ignoring all other | |
values set for the QFont. If the font name matches several fonts, | |
Qt will use the first font returned by X. QFontInfo \e cannot be | |
used to fetch information about a QFont using raw mode (it will | |
return the values set in the QFont for all parameters, including | |
the family name). | |
\warning Do not use raw mode unless you really, really need it! In | |
most (if not all) cases, setRawName() is a much better choice. | |
\sa rawMode(), setRawName() | |
*/ | |
void QFont::setRawMode(bool enable) | |
{ | |
detach(); | |
if ((bool) d->rawMode == enable) return; | |
d->rawMode = enable; | |
} | |
/*! | |
Returns true if a window system font exactly matching the settings | |
of this font is available. | |
\sa QFontInfo | |
*/ | |
bool QFont::exactMatch() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return (d->rawMode | |
? engine->type() != QFontEngine::Box | |
: d->request.exactMatch(engine->fontDef)); | |
} | |
/*! | |
Returns true if this font is equal to \a f; otherwise returns | |
false. | |
Two QFonts are considered equal if their font attributes are | |
equal. If rawMode() is enabled for both fonts, only the family | |
fields are compared. | |
\sa operator!=() isCopyOf() | |
*/ | |
bool QFont::operator==(const QFont &f) const | |
{ | |
return (f.d == d | |
|| (f.d->request == d->request | |
&& f.d->request.pointSize == d->request.pointSize | |
&& f.d->underline == d->underline | |
&& f.d->overline == d->overline | |
&& f.d->strikeOut == d->strikeOut | |
&& f.d->kerning == d->kerning | |
&& f.d->capital == d->capital | |
&& f.d->letterSpacingIsAbsolute == d->letterSpacingIsAbsolute | |
&& f.d->letterSpacing == d->letterSpacing | |
&& f.d->wordSpacing == d->wordSpacing | |
)); | |
} | |
/*! | |
Provides an arbitrary comparison of this font and font \a f. | |
All that is guaranteed is that the operator returns false if both | |
fonts are equal and that (f1 \< f2) == !(f2 \< f1) if the fonts | |
are not equal. | |
This function is useful in some circumstances, for example if you | |
want to use QFont objects as keys in a QMap. | |
\sa operator==() operator!=() isCopyOf() | |
*/ | |
bool QFont::operator<(const QFont &f) const | |
{ | |
if (f.d == d) return false; | |
// the < operator for fontdefs ignores point sizes. | |
QFontDef &r1 = f.d->request; | |
QFontDef &r2 = d->request; | |
if (r1.pointSize != r2.pointSize) return r1.pointSize < r2.pointSize; | |
if (r1.pixelSize != r2.pixelSize) return r1.pixelSize < r2.pixelSize; | |
if (r1.weight != r2.weight) return r1.weight < r2.weight; | |
if (r1.style != r2.style) return r1.style < r2.style; | |
if (r1.stretch != r2.stretch) return r1.stretch < r2.stretch; | |
if (r1.styleHint != r2.styleHint) return r1.styleHint < r2.styleHint; | |
if (r1.styleStrategy != r2.styleStrategy) return r1.styleStrategy < r2.styleStrategy; | |
if (r1.family != r2.family) return r1.family < r2.family; | |
#ifdef Q_WS_X11 | |
if (r1.addStyle != r2.addStyle) return r1.addStyle < r2.addStyle; | |
#endif // Q_WS_X11 | |
if (f.d->capital != d->capital) return f.d->capital < d->capital; | |
if (f.d->letterSpacingIsAbsolute != d->letterSpacingIsAbsolute) return f.d->letterSpacingIsAbsolute < d->letterSpacingIsAbsolute; | |
if (f.d->letterSpacing != d->letterSpacing) return f.d->letterSpacing < d->letterSpacing; | |
if (f.d->wordSpacing != d->wordSpacing) return f.d->wordSpacing < d->wordSpacing; | |
int f1attrs = (f.d->underline << 3) + (f.d->overline << 2) + (f.d->strikeOut<<1) + f.d->kerning; | |
int f2attrs = (d->underline << 3) + (d->overline << 2) + (d->strikeOut<<1) + d->kerning; | |
return f1attrs < f2attrs; | |
} | |
/*! | |
Returns true if this font is different from \a f; otherwise | |
returns false. | |
Two QFonts are considered to be different if their font attributes | |
are different. If rawMode() is enabled for both fonts, only the | |
family fields are compared. | |
\sa operator==() | |
*/ | |
bool QFont::operator!=(const QFont &f) const | |
{ | |
return !(operator==(f)); | |
} | |
/*! | |
Returns the font as a QVariant | |
*/ | |
QFont::operator QVariant() const | |
{ | |
return QVariant(QVariant::Font, this); | |
} | |
/*! | |
Returns true if this font and \a f are copies of each other, i.e. | |
one of them was created as a copy of the other and neither has | |
been modified since. This is much stricter than equality. | |
\sa operator=() operator==() | |
*/ | |
bool QFont::isCopyOf(const QFont & f) const | |
{ | |
return d == f.d; | |
} | |
/*! | |
Returns true if raw mode is used for font name matching; otherwise | |
returns false. | |
\sa setRawMode() rawName() | |
*/ | |
bool QFont::rawMode() const | |
{ | |
return d->rawMode; | |
} | |
/*! | |
Returns a new QFont that has attributes copied from \a other that | |
have not been previously set on this font. | |
*/ | |
QFont QFont::resolve(const QFont &other) const | |
{ | |
if (*this == other | |
&& (resolve_mask == other.resolve_mask || resolve_mask == 0) | |
&& d->dpi == other.d->dpi) { | |
QFont o = other; | |
o.resolve_mask = resolve_mask; | |
return o; | |
} | |
QFont font(*this); | |
font.detach(); | |
font.d->resolve(resolve_mask, other.d.data()); | |
return font; | |
} | |
/*! | |
\fn uint QFont::resolve() const | |
\internal | |
*/ | |
/*! | |
\fn void QFont::resolve(uint mask) | |
\internal | |
*/ | |
#ifdef QT3_SUPPORT | |
/*! \obsolete | |
Please use QApplication::font() instead. | |
*/ | |
QFont QFont::defaultFont() | |
{ | |
return QApplication::font(); | |
} | |
/*! \obsolete | |
Please use QApplication::setFont() instead. | |
*/ | |
void QFont::setDefaultFont(const QFont &f) | |
{ | |
QApplication::setFont(f); | |
} | |
/*! | |
\fn qreal QFont::pointSizeFloat() const | |
\compat | |
Use pointSizeF() instead. | |
*/ | |
/*! | |
\fn void QFont::setPointSizeFloat(qreal size) | |
\compat | |
Use setPointSizeF() instead. | |
*/ | |
#endif | |
/***************************************************************************** | |
QFont substitution management | |
*****************************************************************************/ | |
typedef QHash<QString, QStringList> QFontSubst; | |
Q_GLOBAL_STATIC(QFontSubst, globalFontSubst) | |
// create substitution dict | |
static void initFontSubst() | |
{ | |
// default substitutions | |
static const char * const initTbl[] = { | |
#if defined(Q_WS_X11) | |
"arial", "helvetica", | |
"times new roman", "times", | |
"courier new", "courier", | |
"sans serif", "helvetica", | |
#elif defined(Q_WS_WIN) | |
"times", "times new roman", | |
"courier", "courier new", | |
"helvetica", "arial", | |
"sans serif", "arial", | |
#endif | |
0, 0 | |
}; | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
if (!fontSubst->isEmpty()) | |
return; | |
#if defined(Q_WS_X11) && !defined(QT_NO_FONTCONFIG) | |
if (X11->has_fontconfig) | |
return; | |
#endif | |
for (int i=0; initTbl[i] != 0; i += 2) { | |
QStringList &list = (*fontSubst)[QString::fromLatin1(initTbl[i])]; | |
list.append(QString::fromLatin1(initTbl[i+1])); | |
} | |
} | |
/*! | |
Returns the first family name to be used whenever \a familyName is | |
specified. The lookup is case insensitive. | |
If there is no substitution for \a familyName, \a familyName is | |
returned. | |
To obtain a list of substitutions use substitutes(). | |
\sa setFamily() insertSubstitutions() insertSubstitution() removeSubstitution() | |
*/ | |
QString QFont::substitute(const QString &familyName) | |
{ | |
initFontSubst(); | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
QFontSubst::ConstIterator it = fontSubst->constFind(familyName.toLower()); | |
if (it != fontSubst->constEnd() && !(*it).isEmpty()) | |
return (*it).first(); | |
return familyName; | |
} | |
/*! | |
Returns a list of family names to be used whenever \a familyName | |
is specified. The lookup is case insensitive. | |
If there is no substitution for \a familyName, an empty list is | |
returned. | |
\sa substitute() insertSubstitutions() insertSubstitution() removeSubstitution() | |
*/ | |
QStringList QFont::substitutes(const QString &familyName) | |
{ | |
initFontSubst(); | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
return fontSubst->value(familyName.toLower(), QStringList()); | |
} | |
/*! | |
Inserts \a substituteName into the substitution | |
table for the family \a familyName. | |
\sa insertSubstitutions() removeSubstitution() substitutions() substitute() substitutes() | |
*/ | |
void QFont::insertSubstitution(const QString &familyName, | |
const QString &substituteName) | |
{ | |
initFontSubst(); | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
QStringList &list = (*fontSubst)[familyName.toLower()]; | |
QString s = substituteName.toLower(); | |
if (!list.contains(s)) | |
list.append(s); | |
} | |
/*! | |
Inserts the list of families \a substituteNames into the | |
substitution list for \a familyName. | |
\sa insertSubstitution(), removeSubstitution(), substitutions(), substitute() | |
*/ | |
void QFont::insertSubstitutions(const QString &familyName, | |
const QStringList &substituteNames) | |
{ | |
initFontSubst(); | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
QStringList &list = (*fontSubst)[familyName.toLower()]; | |
QStringList::ConstIterator it = substituteNames.constBegin(); | |
while (it != substituteNames.constEnd()) { | |
QString s = (*it).toLower(); | |
if (!list.contains(s)) | |
list.append(s); | |
it++; | |
} | |
} | |
/*! \fn void QFont::initialize() | |
\internal | |
Internal function that initializes the font system. The font cache | |
and font dict do not alloc the keys. The key is a QString which is | |
shared between QFontPrivate and QXFontName. | |
*/ | |
/*! \fn void QFont::cleanup() | |
\internal | |
Internal function that cleans up the font system. | |
*/ | |
// ### mark: should be called removeSubstitutions() | |
/*! | |
Removes all the substitutions for \a familyName. | |
\sa insertSubstitutions(), insertSubstitution(), substitutions(), substitute() | |
*/ | |
void QFont::removeSubstitution(const QString &familyName) | |
{ // ### function name should be removeSubstitutions() or | |
// ### removeSubstitutionList() | |
initFontSubst(); | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
fontSubst->remove(familyName.toLower()); | |
} | |
/*! | |
Returns a sorted list of substituted family names. | |
\sa insertSubstitution(), removeSubstitution(), substitute() | |
*/ | |
QStringList QFont::substitutions() | |
{ | |
initFontSubst(); | |
QFontSubst *fontSubst = globalFontSubst(); | |
Q_ASSERT(fontSubst != 0); | |
QStringList ret; | |
QFontSubst::ConstIterator it = fontSubst->constBegin(); | |
while (it != fontSubst->constEnd()) { | |
ret.append(it.key()); | |
++it; | |
} | |
ret.sort(); | |
return ret; | |
} | |
/* \internal | |
Internal function. Converts boolean font settings to an unsigned | |
8-bit number. Used for serialization etc. | |
*/ | |
static quint8 get_font_bits(int version, const QFontPrivate *f) | |
{ | |
Q_ASSERT(f != 0); | |
quint8 bits = 0; | |
if (f->request.style) | |
bits |= 0x01; | |
if (f->underline) | |
bits |= 0x02; | |
if (f->overline) | |
bits |= 0x40; | |
if (f->strikeOut) | |
bits |= 0x04; | |
if (f->request.fixedPitch) | |
bits |= 0x08; | |
// if (f.hintSetByUser) | |
// bits |= 0x10; | |
if (f->rawMode) | |
bits |= 0x20; | |
if (version >= QDataStream::Qt_4_0) { | |
if (f->kerning) | |
bits |= 0x10; | |
} | |
if (f->request.style == QFont::StyleOblique) | |
bits |= 0x80; | |
return bits; | |
} | |
static quint8 get_extended_font_bits(const QFontPrivate *f) | |
{ | |
Q_ASSERT(f != 0); | |
quint8 bits = 0; | |
if (f->request.ignorePitch) | |
bits |= 0x01; | |
if (f->letterSpacingIsAbsolute) | |
bits |= 0x02; | |
return bits; | |
} | |
#ifndef QT_NO_DATASTREAM | |
/* \internal | |
Internal function. Sets boolean font settings from an unsigned | |
8-bit number. Used for serialization etc. | |
*/ | |
static void set_font_bits(int version, quint8 bits, QFontPrivate *f) | |
{ | |
Q_ASSERT(f != 0); | |
f->request.style = (bits & 0x01) != 0 ? QFont::StyleItalic : QFont::StyleNormal; | |
f->underline = (bits & 0x02) != 0; | |
f->overline = (bits & 0x40) != 0; | |
f->strikeOut = (bits & 0x04) != 0; | |
f->request.fixedPitch = (bits & 0x08) != 0; | |
// f->hintSetByUser = (bits & 0x10) != 0; | |
f->rawMode = (bits & 0x20) != 0; | |
if (version >= QDataStream::Qt_4_0) | |
f->kerning = (bits & 0x10) != 0; | |
if ((bits & 0x80) != 0) | |
f->request.style = QFont::StyleOblique; | |
} | |
static void set_extended_font_bits(quint8 bits, QFontPrivate *f) | |
{ | |
Q_ASSERT(f != 0); | |
f->request.ignorePitch = (bits & 0x01) != 0; | |
f->letterSpacingIsAbsolute = (bits & 0x02) != 0; | |
} | |
#endif | |
/*! | |
Returns the font's key, a textual representation of a font. It is | |
typically used as the key for a cache or dictionary of fonts. | |
\sa QMap | |
*/ | |
QString QFont::key() const | |
{ | |
return toString(); | |
} | |
/*! | |
Returns a description of the font. The description is a | |
comma-separated list of the attributes, perfectly suited for use | |
in QSettings. | |
\sa fromString() | |
*/ | |
QString QFont::toString() const | |
{ | |
const QChar comma(QLatin1Char(',')); | |
return family() + comma + | |
QString::number( pointSizeF()) + comma + | |
QString::number( pixelSize()) + comma + | |
QString::number((int) styleHint()) + comma + | |
QString::number( weight()) + comma + | |
QString::number((int) style()) + comma + | |
QString::number((int) underline()) + comma + | |
QString::number((int) strikeOut()) + comma + | |
QString::number((int)fixedPitch()) + comma + | |
QString::number((int) rawMode()); | |
} | |
/*! | |
Sets this font to match the description \a descrip. The description | |
is a comma-separated list of the font attributes, as returned by | |
toString(). | |
\sa toString() | |
*/ | |
bool QFont::fromString(const QString &descrip) | |
{ | |
QStringList l(descrip.split(QLatin1Char(','))); | |
int count = l.count(); | |
if (!count || (count > 2 && count < 9) || count > 11) { | |
qWarning("QFont::fromString: Invalid description '%s'", | |
descrip.isEmpty() ? "(empty)" : descrip.toLatin1().data()); | |
return false; | |
} | |
setFamily(l[0]); | |
if (count > 1 && l[1].toDouble() > 0.0) | |
setPointSizeF(l[1].toDouble()); | |
if (count == 9) { | |
setStyleHint((StyleHint) l[2].toInt()); | |
setWeight(qMax(qMin(99, l[3].toInt()), 0)); | |
setItalic(l[4].toInt()); | |
setUnderline(l[5].toInt()); | |
setStrikeOut(l[6].toInt()); | |
setFixedPitch(l[7].toInt()); | |
setRawMode(l[8].toInt()); | |
} else if (count == 10) { | |
if (l[2].toInt() > 0) | |
setPixelSize(l[2].toInt()); | |
setStyleHint((StyleHint) l[3].toInt()); | |
setWeight(qMax(qMin(99, l[4].toInt()), 0)); | |
setStyle((QFont::Style)l[5].toInt()); | |
setUnderline(l[6].toInt()); | |
setStrikeOut(l[7].toInt()); | |
setFixedPitch(l[8].toInt()); | |
setRawMode(l[9].toInt()); | |
} | |
if (count >= 9 && !d->request.fixedPitch) // assume 'false' fixedPitch equals default | |
d->request.ignorePitch = true; | |
return true; | |
} | |
#if !defined(Q_WS_QWS) | |
/*! \internal | |
Internal function that dumps font cache statistics. | |
*/ | |
void QFont::cacheStatistics() | |
{ | |
} | |
#endif // !Q_WS_QWS | |
/***************************************************************************** | |
QFont stream functions | |
*****************************************************************************/ | |
#ifndef QT_NO_DATASTREAM | |
/*! | |
\relates QFont | |
Writes the font \a font to the data stream \a s. (toString() | |
writes to a text stream.) | |
\sa \link datastreamformat.html Format of the QDataStream operators \endlink | |
*/ | |
QDataStream &operator<<(QDataStream &s, const QFont &font) | |
{ | |
if (s.version() == 1) { | |
s << font.d->request.family.toLatin1(); | |
} else { | |
s << font.d->request.family; | |
} | |
if (s.version() >= QDataStream::Qt_4_0) { | |
// 4.0 | |
double pointSize = font.d->request.pointSize; | |
qint32 pixelSize = font.d->request.pixelSize; | |
s << pointSize; | |
s << pixelSize; | |
} else if (s.version() <= 3) { | |
qint16 pointSize = (qint16) (font.d->request.pointSize * 10); | |
if (pointSize < 0) { | |
#ifdef Q_WS_X11 | |
pointSize = (qint16)(font.d->request.pixelSize*720/QX11Info::appDpiY()); | |
#else | |
pointSize = (qint16)QFontInfo(font).pointSize() * 10; | |
#endif | |
} | |
s << pointSize; | |
} else { | |
s << (qint16) (font.d->request.pointSize * 10); | |
s << (qint16) font.d->request.pixelSize; | |
} | |
s << (quint8) font.d->request.styleHint; | |
if (s.version() >= QDataStream::Qt_3_1) | |
s << (quint8) font.d->request.styleStrategy; | |
s << (quint8) 0 | |
<< (quint8) font.d->request.weight | |
<< get_font_bits(s.version(), font.d.data()); | |
if (s.version() >= QDataStream::Qt_4_3) | |
s << (quint16)font.d->request.stretch; | |
if (s.version() >= QDataStream::Qt_4_4) | |
s << get_extended_font_bits(font.d.data()); | |
if (s.version() >= QDataStream::Qt_4_5) { | |
s << font.d->letterSpacing.value(); | |
s << font.d->wordSpacing.value(); | |
} | |
return s; | |
} | |
/*! | |
\relates QFont | |
Reads the font \a font from the data stream \a s. (fromString() | |
reads from a text stream.) | |
\sa \link datastreamformat.html Format of the QDataStream operators \endlink | |
*/ | |
QDataStream &operator>>(QDataStream &s, QFont &font) | |
{ | |
font.d = new QFontPrivate; | |
font.resolve_mask = QFont::AllPropertiesResolved; | |
quint8 styleHint, styleStrategy = QFont::PreferDefault, charSet, weight, bits; | |
if (s.version() == 1) { | |
QByteArray fam; | |
s >> fam; | |
font.d->request.family = QString::fromLatin1(fam); | |
} else { | |
s >> font.d->request.family; | |
} | |
if (s.version() >= QDataStream::Qt_4_0) { | |
// 4.0 | |
double pointSize; | |
qint32 pixelSize; | |
s >> pointSize; | |
s >> pixelSize; | |
font.d->request.pointSize = qreal(pointSize); | |
font.d->request.pixelSize = pixelSize; | |
} else { | |
qint16 pointSize, pixelSize = -1; | |
s >> pointSize; | |
if (s.version() >= 4) | |
s >> pixelSize; | |
font.d->request.pointSize = qreal(pointSize / 10.); | |
font.d->request.pixelSize = pixelSize; | |
} | |
s >> styleHint; | |
if (s.version() >= QDataStream::Qt_3_1) | |
s >> styleStrategy; | |
s >> charSet; | |
s >> weight; | |
s >> bits; | |
font.d->request.styleHint = styleHint; | |
font.d->request.styleStrategy = styleStrategy; | |
font.d->request.weight = weight; | |
set_font_bits(s.version(), bits, font.d.data()); | |
if (s.version() >= QDataStream::Qt_4_3) { | |
quint16 stretch; | |
s >> stretch; | |
font.d->request.stretch = stretch; | |
} | |
if (s.version() >= QDataStream::Qt_4_4) { | |
quint8 extendedBits; | |
s >> extendedBits; | |
set_extended_font_bits(extendedBits, font.d.data()); | |
} | |
if (s.version() >= QDataStream::Qt_4_5) { | |
int value; | |
s >> value; | |
font.d->letterSpacing.setValue(value); | |
s >> value; | |
font.d->wordSpacing.setValue(value); | |
} | |
return s; | |
} | |
#endif // QT_NO_DATASTREAM | |
/***************************************************************************** | |
QFontInfo member functions | |
*****************************************************************************/ | |
/*! | |
\class QFontInfo | |
\reentrant | |
\brief The QFontInfo class provides general information about fonts. | |
\ingroup appearance | |
\ingroup shared | |
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. | |
\list 1 | |
\o 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 \e 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.) | |
\o 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 \e not | |
updated. | |
\o 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 \e not updated. | |
\endlist | |
\sa QFont QFontMetrics QFontDatabase | |
*/ | |
/*! | |
Constructs a font info object for \a font. | |
The font must be screen-compatible, i.e. a font you use when | |
drawing text in \link QWidget widgets\endlink or \link QPixmap | |
pixmaps\endlink, 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::QFontInfo(const QFont &font) | |
: d(font.d.data()) | |
{ | |
} | |
/*! | |
Constructs a copy of \a fi. | |
*/ | |
QFontInfo::QFontInfo(const QFontInfo &fi) | |
: d(fi.d.data()) | |
{ | |
} | |
/*! | |
Destroys the font info object. | |
*/ | |
QFontInfo::~QFontInfo() | |
{ | |
} | |
/*! | |
Assigns the font info in \a fi. | |
*/ | |
QFontInfo &QFontInfo::operator=(const QFontInfo &fi) | |
{ | |
d = fi.d.data(); | |
return *this; | |
} | |
/*! | |
Returns the family name of the matched window system font. | |
\sa QFont::family() | |
*/ | |
QString QFontInfo::family() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return engine->fontDef.family; | |
} | |
/*! | |
Returns the point size of the matched window system font. | |
\sa pointSizeF() QFont::pointSize() | |
*/ | |
int QFontInfo::pointSize() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return qRound(engine->fontDef.pointSize); | |
} | |
/*! | |
Returns the point size of the matched window system font. | |
\sa QFont::pointSizeF() | |
*/ | |
qreal QFontInfo::pointSizeF() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return engine->fontDef.pointSize; | |
} | |
/*! | |
Returns the pixel size of the matched window system font. | |
\sa QFont::pointSize() | |
*/ | |
int QFontInfo::pixelSize() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return engine->fontDef.pixelSize; | |
} | |
/*! | |
Returns the italic value of the matched window system font. | |
\sa QFont::italic() | |
*/ | |
bool QFontInfo::italic() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return engine->fontDef.style != QFont::StyleNormal; | |
} | |
/*! | |
Returns the style value of the matched window system font. | |
\sa QFont::style() | |
*/ | |
QFont::Style QFontInfo::style() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return (QFont::Style)engine->fontDef.style; | |
} | |
/*! | |
Returns the weight of the matched window system font. | |
\sa QFont::weight(), bold() | |
*/ | |
int QFontInfo::weight() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return engine->fontDef.weight; | |
} | |
/*! | |
\fn bool QFontInfo::bold() const | |
Returns true if weight() would return a value greater than | |
QFont::Normal; otherwise returns false. | |
\sa weight(), QFont::bold() | |
*/ | |
/*! | |
Returns the underline value of the matched window system font. | |
\sa QFont::underline() | |
\internal | |
Here we read the underline flag directly from the QFont. | |
This is OK for X11 and for Windows because we always get what we want. | |
*/ | |
bool QFontInfo::underline() const | |
{ | |
return d->underline; | |
} | |
/*! | |
Returns the overline value of the matched window system font. | |
\sa QFont::overline() | |
\internal | |
Here we read the overline flag directly from the QFont. | |
This is OK for X11 and for Windows because we always get what we want. | |
*/ | |
bool QFontInfo::overline() const | |
{ | |
return d->overline; | |
} | |
/*! | |
Returns the strikeout value of the matched window system font. | |
\sa QFont::strikeOut() | |
\internal Here we read the strikeOut flag directly from the QFont. | |
This is OK for X11 and for Windows because we always get what we want. | |
*/ | |
bool QFontInfo::strikeOut() const | |
{ | |
return d->strikeOut; | |
} | |
/*! | |
Returns the fixed pitch value of the matched window system font. | |
\sa QFont::fixedPitch() | |
*/ | |
bool QFontInfo::fixedPitch() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
#ifdef Q_OS_MAC | |
if (!engine->fontDef.fixedPitchComputed) { | |
QChar ch[2] = { QLatin1Char('i'), QLatin1Char('m') }; | |
QGlyphLayoutArray<2> g; | |
int l = 2; | |
engine->stringToCMap(ch, 2, &g, &l, 0); | |
engine->fontDef.fixedPitch = g.advances_x[0] == g.advances_x[1]; | |
engine->fontDef.fixedPitchComputed = true; | |
} | |
#endif | |
return engine->fontDef.fixedPitch; | |
} | |
/*! | |
Returns the style of the matched window system font. | |
Currently only returns the style hint set in QFont. | |
\sa QFont::styleHint() QFont::StyleHint | |
*/ | |
QFont::StyleHint QFontInfo::styleHint() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return (QFont::StyleHint) engine->fontDef.styleHint; | |
} | |
/*! | |
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. | |
\sa QFont::rawMode() | |
*/ | |
bool QFontInfo::rawMode() const | |
{ | |
return d->rawMode; | |
} | |
/*! | |
Returns true if the matched window system font is exactly the same | |
as the one specified by the font; otherwise returns false. | |
\sa QFont::exactMatch() | |
*/ | |
bool QFontInfo::exactMatch() const | |
{ | |
QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); | |
Q_ASSERT(engine != 0); | |
return (d->rawMode | |
? engine->type() != QFontEngine::Box | |
: d->request.exactMatch(engine->fontDef)); | |
} | |
// ********************************************************************** | |
// QFontCache | |
// ********************************************************************** | |
#ifdef QFONTCACHE_DEBUG | |
// fast timeouts for debugging | |
static const int fast_timeout = 1000; // 1s | |
static const int slow_timeout = 5000; // 5s | |
#else | |
static const int fast_timeout = 10000; // 10s | |
static const int slow_timeout = 300000; // 5m | |
#endif // QFONTCACHE_DEBUG | |
const uint QFontCache::min_cost = 4*1024; // 4mb | |
#ifdef QT_NO_THREAD | |
Q_GLOBAL_STATIC(QFontCache, theFontCache) | |
QFontCache *QFontCache::instance() | |
{ | |
return theFontCache(); | |
} | |
void QFontCache::cleanup() | |
{ | |
} | |
#else | |
Q_GLOBAL_STATIC(QThreadStorage<QFontCache *>, theFontCache) | |
QFontCache *QFontCache::instance() | |
{ | |
QFontCache *&fontCache = theFontCache()->localData(); | |
if (!fontCache) | |
fontCache = new QFontCache; | |
return fontCache; | |
} | |
void QFontCache::cleanup() | |
{ | |
QThreadStorage<QFontCache *> *cache = 0; | |
QT_TRY { | |
cache = theFontCache(); | |
} QT_CATCH (const std::bad_alloc &) { | |
// no cache - just ignore | |
} | |
if (cache && cache->hasLocalData()) | |
cache->setLocalData(0); | |
} | |
#endif // QT_NO_THREAD | |
QFontCache::QFontCache() | |
: QObject(), total_cost(0), max_cost(min_cost), | |
current_timestamp(0), fast(false), timer_id(-1) | |
{ | |
} | |
QFontCache::~QFontCache() | |
{ | |
clear(); | |
{ | |
EngineDataCache::ConstIterator it = engineDataCache.constBegin(), | |
end = engineDataCache.constEnd(); | |
while (it != end) { | |
if (it.value()->ref == 0) | |
delete it.value(); | |
else | |
FC_DEBUG("QFontCache::~QFontCache: engineData %p still has refcount %d", | |
it.value(), int(it.value()->ref)); | |
++it; | |
} | |
} | |
EngineCache::ConstIterator it = engineCache.constBegin(), | |
end = engineCache.constEnd(); | |
while (it != end) { | |
if (--it.value().data->cache_count == 0) { | |
if (it.value().data->ref == 0) { | |
FC_DEBUG("QFontCache::~QFontCache: deleting engine %p key=(%d / %g %g %d %d %d)", | |
it.value().data, it.key().script, it.key().def.pointSize, | |
it.key().def.pixelSize, it.key().def.weight, it.key().def.style, | |
it.key().def.fixedPitch); | |
delete it.value().data; | |
} else { | |
FC_DEBUG("QFontCache::~QFontCache: engine = %p still has refcount %d", | |
it.value().data, int(it.value().data->ref)); | |
} | |
} | |
++it; | |
} | |
} | |
void QFontCache::clear() | |
{ | |
{ | |
EngineDataCache::Iterator it = engineDataCache.begin(), | |
end = engineDataCache.end(); | |
while (it != end) { | |
QFontEngineData *data = it.value(); | |
#if !defined(Q_WS_MAC) | |
for (int i = 0; i < QUnicodeTables::ScriptCount; ++i) { | |
if (data->engines[i]) { | |
data->engines[i]->ref.deref(); | |
data->engines[i] = 0; | |
} | |
} | |
#else | |
if (data->engine) { | |
data->engine->ref.deref(); | |
data->engine = 0; | |
} | |
#endif | |
++it; | |
} | |
} | |
for (EngineCache::Iterator it = engineCache.begin(), end = engineCache.end(); | |
it != end; ++it) { | |
if (it->data->ref == 0) { | |
delete it->data; | |
it->data = 0; | |
} | |
} | |
for (EngineCache::Iterator it = engineCache.begin(), end = engineCache.end(); | |
it != end; ++it) { | |
if (it->data && it->data->ref == 0) { | |
delete it->data; | |
it->data = 0; | |
} | |
} | |
engineCache.clear(); | |
} | |
#if defined(Q_WS_QWS) && !defined(QT_NO_QWS_QPF2) | |
void QFontCache::removeEngineForFont(const QByteArray &_fontName) | |
{ | |
/* This could be optimized but the code becomes much more complex if we want to handle multi | |
* font engines and it is probably not worth it. Therefore we just clear the entire font cache. | |
*/ | |
Q_UNUSED(_fontName); | |
clear(); | |
} | |
#endif | |
QFontEngineData *QFontCache::findEngineData(const Key &key) const | |
{ | |
EngineDataCache::ConstIterator it = engineDataCache.find(key), | |
end = engineDataCache.end(); | |
if (it == end) return 0; | |
// found | |
return it.value(); | |
} | |
void QFontCache::insertEngineData(const Key &key, QFontEngineData *engineData) | |
{ | |
FC_DEBUG("QFontCache: inserting new engine data %p", engineData); | |
engineDataCache.insert(key, engineData); | |
increaseCost(sizeof(QFontEngineData)); | |
} | |
QFontEngine *QFontCache::findEngine(const Key &key) | |
{ | |
EngineCache::Iterator it = engineCache.find(key), | |
end = engineCache.end(); | |
if (it == end) return 0; | |
// found... update the hitcount and timestamp | |
it.value().hits++; | |
it.value().timestamp = ++current_timestamp; | |
FC_DEBUG("QFontCache: found font engine\n" | |
" %p: timestamp %4u hits %3u ref %2d/%2d, type '%s'", | |
it.value().data, it.value().timestamp, it.value().hits, | |
int(it.value().data->ref), it.value().data->cache_count, | |
it.value().data->name()); | |
return it.value().data; | |
} | |
void QFontCache::insertEngine(const Key &key, QFontEngine *engine) | |
{ | |
FC_DEBUG("QFontCache: inserting new engine %p", engine); | |
Engine data(engine); | |
data.timestamp = ++current_timestamp; | |
engineCache.insert(key, data); | |
// only increase the cost if this is the first time we insert the engine | |
if (engine->cache_count == 0) | |
increaseCost(engine->cache_cost); | |
++engine->cache_count; | |
} | |
void QFontCache::increaseCost(uint cost) | |
{ | |
cost = (cost + 512) / 1024; // store cost in kb | |
cost = cost > 0 ? cost : 1; | |
total_cost += cost; | |
FC_DEBUG(" COST: increased %u kb, total_cost %u kb, max_cost %u kb", | |
cost, total_cost, max_cost); | |
if (total_cost > max_cost) { | |
max_cost = total_cost; | |
if (timer_id == -1 || ! fast) { | |
FC_DEBUG(" TIMER: starting fast timer (%d ms)", fast_timeout); | |
if (timer_id != -1) killTimer(timer_id); | |
timer_id = startTimer(fast_timeout); | |
fast = true; | |
} | |
} | |
} | |
void QFontCache::decreaseCost(uint cost) | |
{ | |
cost = (cost + 512) / 1024; // cost is stored in kb | |
cost = cost > 0 ? cost : 1; | |
Q_ASSERT(cost <= total_cost); | |
total_cost -= cost; | |
FC_DEBUG(" COST: decreased %u kb, total_cost %u kb, max_cost %u kb", | |
cost, total_cost, max_cost); | |
} | |
#if defined(Q_WS_WIN) || defined (Q_WS_QWS) | |
void QFontCache::cleanupPrinterFonts() | |
{ | |
FC_DEBUG("QFontCache::cleanupPrinterFonts"); | |
{ | |
FC_DEBUG(" CLEAN engine data:"); | |
// clean out all unused engine data | |
EngineDataCache::Iterator it = engineDataCache.begin(), | |
end = engineDataCache.end(); | |
while (it != end) { | |
if (it.key().screen == 0) { | |
++it; | |
continue; | |
} | |
if(it.value()->ref != 0) { | |
for(int i = 0; i < QUnicodeTables::ScriptCount; ++i) { | |
if(it.value()->engines[i]) { | |
it.value()->engines[i]->ref.deref(); | |
it.value()->engines[i] = 0; | |
} | |
} | |
++it; | |
} else { | |
EngineDataCache::Iterator rem = it++; | |
decreaseCost(sizeof(QFontEngineData)); | |
FC_DEBUG(" %p", rem.value()); | |
delete rem.value(); | |
engineDataCache.erase(rem); | |
} | |
} | |
} | |
EngineCache::Iterator it = engineCache.begin(), | |
end = engineCache.end(); | |
while(it != end) { | |
if (it.value().data->ref != 0 || it.key().screen == 0) { | |
++it; | |
continue; | |
} | |
FC_DEBUG(" %p: timestamp %4u hits %2u ref %2d/%2d, type '%s'", | |
it.value().data, it.value().timestamp, it.value().hits, | |
int(it.value().data->ref), it.value().data->cache_count, | |
it.value().data->name()); | |
if (--it.value().data->cache_count == 0) { | |
FC_DEBUG(" DELETE: last occurrence in cache"); | |
decreaseCost(it.value().data->cache_cost); | |
delete it.value().data; | |
} | |
engineCache.erase(it++); | |
} | |
} | |
#endif | |
void QFontCache::timerEvent(QTimerEvent *) | |
{ | |
FC_DEBUG("QFontCache::timerEvent: performing cache maintenance (timestamp %u)", | |
current_timestamp); | |
if (total_cost <= max_cost && max_cost <= min_cost) { | |
FC_DEBUG(" cache redused sufficiently, stopping timer"); | |
killTimer(timer_id); | |
timer_id = -1; | |
fast = false; | |
return; | |
} | |
// go through the cache and count up everything in use | |
uint in_use_cost = 0; | |
{ | |
FC_DEBUG(" SWEEP engine data:"); | |
// make sure the cost of each engine data is at least 1kb | |
const uint engine_data_cost = | |
sizeof(QFontEngineData) > 1024 ? sizeof(QFontEngineData) : 1024; | |
EngineDataCache::ConstIterator it = engineDataCache.constBegin(), | |
end = engineDataCache.constEnd(); | |
for (; it != end; ++it) { | |
#ifdef QFONTCACHE_DEBUG | |
FC_DEBUG(" %p: ref %2d", it.value(), int(it.value()->ref)); | |
# if defined(Q_WS_X11) || defined(Q_WS_WIN) | |
// print out all engines | |
for (int i = 0; i < QUnicodeTables::ScriptCount; ++i) { | |
if (! it.value()->engines[i]) | |
continue; | |
FC_DEBUG(" contains %p", it.value()->engines[i]); | |
} | |
# endif // Q_WS_X11 || Q_WS_WIN | |
#endif // QFONTCACHE_DEBUG | |
if (it.value()->ref != 0) | |
in_use_cost += engine_data_cost; | |
} | |
} | |
{ | |
FC_DEBUG(" SWEEP engine:"); | |
EngineCache::ConstIterator it = engineCache.constBegin(), | |
end = engineCache.constEnd(); | |
for (; it != end; ++it) { | |
FC_DEBUG(" %p: timestamp %4u hits %2u ref %2d/%2d, cost %u bytes", | |
it.value().data, it.value().timestamp, it.value().hits, | |
int(it.value().data->ref), it.value().data->cache_count, | |
it.value().data->cache_cost); | |
if (it.value().data->ref != 0) | |
in_use_cost += it.value().data->cache_cost / it.value().data->cache_count; | |
} | |
// attempt to make up for rounding errors | |
in_use_cost += engineCache.size(); | |
} | |
in_use_cost = (in_use_cost + 512) / 1024; // cost is stored in kb | |
/* | |
calculate the new maximum cost for the cache | |
NOTE: in_use_cost is *not* correct due to rounding errors in the | |
above algorithm. instead of worrying about getting the | |
calculation correct, we are more interested in speed, and use | |
in_use_cost as a floor for new_max_cost | |
*/ | |
uint new_max_cost = qMax(qMax(max_cost / 2, in_use_cost), min_cost); | |
FC_DEBUG(" after sweep, in use %u kb, total %u kb, max %u kb, new max %u kb", | |
in_use_cost, total_cost, max_cost, new_max_cost); | |
if (new_max_cost == max_cost) { | |
if (fast) { | |
FC_DEBUG(" cannot shrink cache, slowing timer"); | |
killTimer(timer_id); | |
timer_id = startTimer(slow_timeout); | |
fast = false; | |
} | |
return; | |
} else if (! fast) { | |
FC_DEBUG(" dropping into passing gear"); | |
killTimer(timer_id); | |
timer_id = startTimer(fast_timeout); | |
fast = true; | |
} | |
max_cost = new_max_cost; | |
{ | |
FC_DEBUG(" CLEAN engine data:"); | |
// clean out all unused engine data | |
EngineDataCache::Iterator it = engineDataCache.begin(), | |
end = engineDataCache.end(); | |
while (it != end) { | |
if (it.value()->ref != 0) { | |
++it; | |
continue; | |
} | |
EngineDataCache::Iterator rem = it++; | |
decreaseCost(sizeof(QFontEngineData)); | |
FC_DEBUG(" %p", rem.value()); | |
delete rem.value(); | |
engineDataCache.erase(rem); | |
} | |
} | |
// clean out the engine cache just enough to get below our new max cost | |
uint current_cost; | |
do { | |
current_cost = total_cost; | |
EngineCache::Iterator it = engineCache.begin(), | |
end = engineCache.end(); | |
// determine the oldest and least popular of the unused engines | |
uint oldest = ~0u; | |
uint least_popular = ~0u; | |
for (; it != end; ++it) { | |
if (it.value().data->ref != 0) | |
continue; | |
if (it.value().timestamp < oldest && | |
it.value().hits <= least_popular) { | |
oldest = it.value().timestamp; | |
least_popular = it.value().hits; | |
} | |
} | |
FC_DEBUG(" oldest %u least popular %u", oldest, least_popular); | |
for (it = engineCache.begin(); it != end; ++it) { | |
if (it.value().data->ref == 0 && | |
it.value().timestamp == oldest && | |
it.value().hits == least_popular) | |
break; | |
} | |
if (it != end) { | |
FC_DEBUG(" %p: timestamp %4u hits %2u ref %2d/%2d, type '%s'", | |
it.value().data, it.value().timestamp, it.value().hits, | |
int(it.value().data->ref), it.value().data->cache_count, | |
it.value().data->name()); | |
if (--it.value().data->cache_count == 0) { | |
FC_DEBUG(" DELETE: last occurrence in cache"); | |
decreaseCost(it.value().data->cache_cost); | |
delete it.value().data; | |
} else { | |
/* | |
this particular font engine is in the cache multiple | |
times... set current_cost to zero, so that we can | |
keep looping to get rid of all occurrences | |
*/ | |
current_cost = 0; | |
} | |
engineCache.erase(it); | |
} | |
} while (current_cost != total_cost && total_cost > max_cost); | |
} | |
#ifndef QT_NO_DEBUG_STREAM | |
QDebug operator<<(QDebug stream, const QFont &font) | |
{ | |
return stream << "QFont(" << font.toString() << ')'; | |
} | |
#endif | |
QT_END_NAMESPACE |