qfont.cpp File Reference

#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>
#include "qx11info_x11.h"
#include <private/qt_x11_p.h>
#include "qscreen_qws.h"
#include <qfile.h>
#include "qfontengine_qpf_p.h"
#include <QMutexLocker>

Go to the source code of this file.

Macros
#define	FC_DEBUG   if (false) qDebug
#define	QT_FONT_ENGINE_FROM_DATA(data, script)   data->engine

Typedefs
typedef QHash< QString, QStringList >	QFontSubst

Functions
static quint8	get_extended_font_bits (const QFontPrivate *f)
static quint8	get_font_bits (int version, const QFontPrivate *f)
static void	initFontSubst ()
QDebug	operator<< (QDebug stream, const QFont &font)
Q_GUI_EXPORT int	qt_defaultDpi ()
Q_GUI_EXPORT int	qt_defaultDpiX ()
Q_GUI_EXPORT int	qt_defaultDpiY ()
QMutex *	qt_fontdatabase_mutex ()
const QX11Info *	qt_x11Info (const QPaintDevice *pd)
static void	set_extended_font_bits (quint8 bits, QFontPrivate *f)
static void	set_font_bits (int version, quint8 bits, QFontPrivate *f)
HDC	shared_dc ()

Variables
static const int	fast_timeout = 10000
bool	qt_is_gui_used
static const int	slow_timeout = 300000

Macro Definition Documentation

FC_DEBUG

#define FC_DEBUG   if (false) qDebug

Definition at line 89 of file qfont.cpp.

Referenced by QFontCache::cleanupPrinterFonts(), QFontCache::decreaseCost(), QFontCache::findEngine(), QFontCache::increaseCost(), QFontCache::insertEngine(), QFontCache::insertEngineData(), QFontCache::timerEvent(), and QFontCache::~QFontCache().

QT_FONT_ENGINE_FROM_DATA

#define QT_FONT_ENGINE_FROM_DATA	(		data,
			script
	)		data->engine

Definition at line 291 of file qfont.cpp.

Referenced by QFontPrivate::engineForScript().

Typedef Documentation

QFontSubst

typedef QHash<QString, QStringList> QFontSubst

Definition at line 2064 of file qfont.cpp.

Function Documentation

get_extended_font_bits()

static quint8 get_extended_font_bits ( const QFontPrivate *  f )

static

Definition at line 2284 of file qfont.cpp.

{
    Q_ASSERT(f != 0);
    quint8 bits = 0;
    if (f->request.ignorePitch)
        bits |= 0x01;
    if (f->letterSpacingIsAbsolute)
        bits |= 0x02;
    return bits;
}

get_font_bits()

static quint8 get_font_bits ( int  version, const QFontPrivate *  f  )

static

Definition at line 2257 of file qfont.cpp.

{
    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;
}

initFontSubst()

static void initFontSubst ( )

static

Definition at line 2068 of file qfont.cpp.

Referenced by QFont::insertSubstitution(), QFont::insertSubstitutions(), QFont::removeSubstitution(), QFont::substitute(), QFont::substitutes(), and QFont::substitutions().

{
    // 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_MAC)
        ".lucida grande ui", "lucida grande",
#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]));
    }
}

operator<<()

QDebug operator<<	(	QDebug	stream,
		const QFont &	font
	)

Definition at line 3367 of file qfont.cpp.

{
    return stream << "QFont(" << font.toString() << ')';
}

qt_defaultDpi()

Q_GUI_EXPORT int qt_defaultDpi

(

)

Definition at line 240 of file qfont.cpp.

Referenced by QTextDocumentLayoutPrivate::blockIndent(), QPicturePaintEngine::drawTextItem(), getImageSize(), getPixmapSize(), QMacPrintEnginePrivate::initialize(), QTextDocumentLayoutPrivate::layoutBlock(), QFontMetrics::QFontMetrics(), QFontMetricsF::QFontMetricsF(), QPdfBaseEnginePrivate::QPdfBaseEnginePrivate(), qt_load_font_engine_win(), releaseFontData(), QTextDocumentLayoutPrivate::scaleToDevice(), QDeclarativeFontValueType::setPointSize(), and QDeclarativeFontValueType::setStrikeout().

{
    return qt_defaultDpiY();
}

qt_defaultDpiX()

Q_GUI_EXPORT int qt_defaultDpiX

(

)

Definition at line 162 of file qfont.cpp.

Referenced by QPicture::exec(), QAlphaPaintEngine::flushAndInit(), QStaticTextPrivate::get(), QBlittablePixmapData::metric(), QRasterPixmapData::metric(), QPaintBuffer::metric(), QGLPixelBuffer::metric(), QPicture::metric(), QGLFramebufferObject::metric(), QGLPixmapData::metric(), QVGPixmapData::metric(), QMacQuartzPaintDevice::metric(), QPainterReplayer::process(), QFakeDevice::QFakeDevice(), and QPainterReplayer::setupTransform().

{
    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_WS_QPA)
    QPlatformIntegration *pi = QApplicationPrivate::platformIntegration();
    if (pi) {
        QPlatformScreen *screen = QApplicationPrivate::platformIntegration()->screens().at(0);
        const QSize screenSize = screen->geometry().size();
        const QSize physicalSize = screen->physicalSize();
        dpi = qRound(screenSize.width() / (physicalSize.width() / qreal(25.4)));
    } else {
        //PI has not been initialised, or it is being initialised. Give a default dpi
        dpi = 100;
    }
#elif defined(Q_OS_SYMBIAN)
    dpi = S60->defaultDpiX;
#endif // Q_WS_X11

    return dpi;
}

qt_defaultDpiY()

Q_GUI_EXPORT int qt_defaultDpiY

(

)

Definition at line 201 of file qfont.cpp.

Referenced by QTextEngine::calculateTabWidth(), QPaintBufferEngine::drawTextItem(), QPicture::exec(), QAlphaPaintEngine::flushAndInit(), QStaticTextPrivate::get(), QBlittablePixmapData::metric(), QRasterPixmapData::metric(), QPaintBuffer::metric(), QGLPixelBuffer::metric(), QPicture::metric(), QGLFramebufferObject::metric(), QGLPixmapData::metric(), QVGPixmapData::metric(), QMacQuartzPaintDevice::metric(), QFontDatabase::pointSizes(), QPainterReplayer::process(), QFakeDevice::QFakeDevice(), qt_defaultDpi(), qt_FcPatternToQFontDef(), QPainterReplayer::setupTransform(), QTextEngine::shapeText(), and QFontDatabase::smoothSizes().

{
    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_WS_QPA)
    QPlatformIntegration *pi = QApplicationPrivate::platformIntegration();
    if (pi) {
        QPlatformScreen *screen = QApplicationPrivate::platformIntegration()->screens().at(0);
        const QSize screenSize = screen->geometry().size();
        const QSize physicalSize = screen->physicalSize();
        dpi = qRound(screenSize.height() / (physicalSize.height() / qreal(25.4)));
    } else {
        //PI has not been initialised, or it is being initialised. Give a default dpi
        dpi = 100;
    }
#elif defined(Q_OS_SYMBIAN)
    dpi = S60->defaultDpiY;
#endif // Q_WS_X11

    return dpi;
}

qt_fontdatabase_mutex()

QMutex* qt_fontdatabase_mutex

(

)

Definition at line 1097 of file qfontdatabase.cpp.

Referenced by QFontPrivate::engineForScript(), QFontEngineMultiFT::loadEngine(), QFontEngineFT::stringToCMap(), QFontEngineMultiFT::~QFontEngineMultiFT(), and QFontPrivate::~QFontPrivate().

{
    return fontDatabaseMutex();
}

qt_x11Info()

const QX11Info* qt_x11Info ( const QPaintDevice *  pd )

related

Referenced by QFont::QFont().

set_extended_font_bits()

static void set_extended_font_bits ( quint8  bits, QFontPrivate *  f  )

static

Definition at line 2317 of file qfont.cpp.

{
    Q_ASSERT(f != 0);
    f->request.ignorePitch = (bits & 0x01) != 0;
    f->letterSpacingIsAbsolute = (bits & 0x02) != 0;
}

set_font_bits()

static void set_font_bits ( int  version, quint8  bits, QFontPrivate *  f  )

static

Definition at line 2301 of file qfont.cpp.

{
    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;
}

shared_dc()

HDC shared_dc

(

)

Definition at line 118 of file qfontengine_win.cpp.

Referenced by qt_defaultDpiX(), and qt_defaultDpiY().

{
    QtHDC *&hdc = local_shared_dc()->localData();
    if (!hdc)
        hdc = new QtHDC;
    return hdc->hdc();
}

Variable Documentation

fast_timeout

const int fast_timeout = 10000

static

Definition at line 2899 of file qfont.cpp.

Referenced by QFontInfo::exactMatch(), QFontCache::increaseCost(), and QFontCache::timerEvent().

qt_is_gui_used

bool qt_is_gui_used

Definition at line 492 of file qapplication.cpp.

Referenced by QFontDef::exactMatch(), qt_defaultDpiX(), and qt_defaultDpiY().

slow_timeout

const int slow_timeout = 300000

static

Definition at line 2900 of file qfont.cpp.

Referenced by QFontInfo::exactMatch(), and QFontCache::timerEvent().