diff options
Diffstat (limited to 'src/gui/text/qfont.cpp')
| -rw-r--r-- | src/gui/text/qfont.cpp | 209 |
1 files changed, 190 insertions, 19 deletions
diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp index 1e29f34..2df88e2 100644 --- a/src/gui/text/qfont.cpp +++ b/src/gui/text/qfont.cpp @@ -75,6 +75,10 @@ #ifdef Q_OS_SYMBIAN #include <private/qt_s60_p.h> #endif +#ifdef Q_WS_QPA +#include <QtGui/qplatformscreen_qpa.h> +#include <QtGui/private/qapplication_p.h> +#endif #include <QMutexLocker> @@ -135,11 +139,15 @@ bool QFontDef::exactMatch(const QFontDef &other) const QFontDatabase::parseFontName(family, this_foundry, this_family); QFontDatabase::parseFontName(other.family, other_foundry, other_family); + this_family = QFontDatabase::resolveFontFamilyAlias(this_family); + other_family = QFontDatabase::resolveFontFamilyAlias(other_family); + return (styleHint == other.styleHint && styleStrategy == other.styleStrategy && weight == other.weight && style == other.style && this_family == other_family + && (styleName.isEmpty() || other.styleName.isEmpty() || styleName == other.styleName) && (this_foundry.isEmpty() || other_foundry.isEmpty() || this_foundry == other_foundry) @@ -172,6 +180,17 @@ Q_GUI_EXPORT int qt_defaultDpiX() 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 @@ -200,6 +219,17 @@ Q_GUI_EXPORT int qt_defaultDpiY() 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 @@ -253,27 +283,16 @@ QFontPrivate::~QFontPrivate() 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]; -} +#if !defined(Q_WS_MAC) +#define QT_FONT_ENGINE_FROM_DATA(data, script) data->engines[script] #else +#define QT_FONT_ENGINE_FROM_DATA(data, script) data->engine +#endif + QFontEngine *QFontPrivate::engineForScript(int script) const { - extern QMutex *qt_fontdatabase_mutex(); QMutexLocker locker(qt_fontdatabase_mutex()); if (script >= QUnicodeTables::Inherited) script = QUnicodeTables::Common; @@ -282,11 +301,10 @@ QFontEngine *QFontPrivate::engineForScript(int script) const engineData->ref.deref(); engineData = 0; } - if (!engineData || !engineData->engine) + if (!engineData || !QT_FONT_ENGINE_FROM_DATA(engineData, script)) QFontDatabase::load(this, script); - return engineData->engine; + return QT_FONT_ENGINE_FROM_DATA(engineData, script); } -#endif void QFontPrivate::alterCharForCapitalization(QChar &c) const { switch (capital) { @@ -331,6 +349,9 @@ void QFontPrivate::resolve(uint mask, const QFontPrivate *other) if (! (mask & QFont::FamilyResolved)) request.family = other->request.family; + if (! (mask & QFont::StyleNameResolved)) + request.styleName = other->request.styleName; + if (! (mask & QFont::SizeResolved)) { request.pointSize = other->request.pointSize; request.pixelSize = other->request.pixelSize; @@ -354,6 +375,9 @@ void QFontPrivate::resolve(uint mask, const QFontPrivate *other) if (! (mask & QFont::StretchResolved)) request.stretch = other->request.stretch; + if (! (mask & QFont::HintingPreferenceResolved)) + request.hintingPreference = other->request.hintingPreference; + if (! (mask & QFont::UnderlineResolved)) underline = other->underline; @@ -877,6 +901,39 @@ void QFont::setFamily(const QString &family) } /*! + \since 4.8 + + Returns the requested font style name, it will be used to match the + font with irregular styles (that can't be normalized in other style + properties). It depends on system font support, thus only works for + Mac OS X and X11 so far. On Windows irregular styles will be added + as separate font families so there is no need for this. + + \sa setFamily() setStyle() +*/ +QString QFont::styleName() const +{ + return d->request.styleName; +} + +/*! + \since 4.8 + + Sets the style name of the font to the given \a styleName. + When set, other style properties like style() and weight() will be ignored + for font matching. + + \sa styleName() +*/ +void QFont::setStyleName(const QString &styleName) +{ + detach(); + + d->request.styleName = styleName; + resolve_mask |= QFont::StyleNameResolved; +} + +/*! Returns the point size of the font. Returns -1 if the font size was specified in pixels. @@ -888,6 +945,105 @@ int QFont::pointSize() const } /*! + \since 4.8 + + \enum QFont::HintingPreference + + This enum describes the different levels of hinting that can be applied + to glyphs to improve legibility on displays where it might be warranted + by the density of pixels. + + \value PreferDefaultHinting Use the default hinting level for the target platform. + \value PreferNoHinting If possible, render text without hinting the outlines + of the glyphs. The text layout will be typographically accurate and + scalable, using the same metrics as are used e.g. when printing. + \value PreferVerticalHinting If possible, render text with no horizontal hinting, + but align glyphs to the pixel grid in the vertical direction. The text will appear + crisper on displays where the density is too low to give an accurate rendering + of the glyphs. But since the horizontal metrics of the glyphs are unhinted, the text's + layout will be scalable to higher density devices (such as printers) without impacting + details such as line breaks. + \value PreferFullHinting If possible, render text with hinting in both horizontal and + vertical directions. The text will be altered to optimize legibility on the target + device, but since the metrics will depend on the target size of the text, the positions + of glyphs, line breaks, and other typographical detail will not scale, meaning that a + text layout may look different on devices with different pixel densities. + + Please note that this enum only describes a preference, as the full range of hinting levels + are not supported on all of Qt's supported platforms. The following table details the effect + of a given hinting preference on a selected set of target platforms. + + \table + \header + \o + \o PreferDefaultHinting + \o PreferNoHinting + \o PreferVerticalHinting + \o PreferFullHinting + \row + \o Windows Vista (w/o Platform Update) and earlier + \o Full hinting + \o Full hinting + \o Full hinting + \o Full hinting + \row + \o Windows 7 and Windows Vista (w/Platform Update) and DirectWrite enabled in Qt + \o Full hinting + \o Vertical hinting + \o Vertical hinting + \o Full hinting + \row + \o FreeType + \o Operating System setting + \o No hinting + \o Vertical hinting (light) + \o Full hinting + \row + \o Cocoa on Mac OS X + \o No hinting + \o No hinting + \o No hinting + \o No hinting + \endtable + + \note Please be aware that altering the hinting preference on Windows is available through + the DirectWrite font engine. This is available on Windows Vista after installing the platform + update, and on Windows 7. In order to use this extension, configure Qt using -directwrite. + The target application will then depend on the availability of DirectWrite on the target + system. + +*/ + +/*! + \since 4.8 + + Set the preference for the hinting level of the glyphs to \a hintingPreference. This is a hint + to the underlying font rendering system to use a certain level of hinting, and has varying + support across platforms. See the table in the documentation for QFont::HintingPreference for + more details. + + The default hinting preference is QFont::PreferDefaultHinting. +*/ +void QFont::setHintingPreference(HintingPreference hintingPreference) +{ + detach(); + + d->request.hintingPreference = hintingPreference; + + resolve_mask |= QFont::HintingPreferenceResolved; +} + +/*! + \since 4.8 + + Returns the currently preferred hinting level for glyphs rendered with this font. +*/ +QFont::HintingPreference QFont::hintingPreference() const +{ + return QFont::HintingPreference(d->request.hintingPreference); +} + +/*! Sets the point size to \a pointSize. The point size must be greater than zero. @@ -2390,6 +2546,21 @@ QString QFontInfo::family() const } /*! + \since 4.8 + + Returns the style name of the matched window system font on + system that supports it. + + \sa QFont::styleName() +*/ +QString QFontInfo::styleName() const +{ + QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); + Q_ASSERT(engine != 0); + return engine->fontDef.styleName; +} + +/*! Returns the point size of the matched window system font. \sa pointSizeF() QFont::pointSize() |