diff options
Diffstat (limited to 'src/gui/text/qfontengine_s60.cpp')
| -rw-r--r-- | src/gui/text/qfontengine_s60.cpp | 182 |
1 files changed, 108 insertions, 74 deletions
diff --git a/src/gui/text/qfontengine_s60.cpp b/src/gui/text/qfontengine_s60.cpp index bf30e1c..f8e5b4a 100644 --- a/src/gui/text/qfontengine_s60.cpp +++ b/src/gui/text/qfontengine_s60.cpp @@ -46,114 +46,115 @@ #include <private/qapplication_p.h> #include "qimage.h" #include <private/qt_s60_p.h> +#include <private/qpixmap_s60_p.h> #include <e32base.h> #include <e32std.h> #include <eikenv.h> #include <gdi.h> -#if defined(Q_SYMBIAN_HAS_FONTTABLE_API) || defined(Q_SYMBIAN_HAS_GLYPHOUTLINE_API) +#if defined(Q_SYMBIAN_HAS_GLYPHOUTLINE_API) #include <graphics/gdi/gdiplatapi.h> -#endif // Q_SYMBIAN_HAS_FONTTABLE_API || Q_SYMBIAN_HAS_GLYPHOUTLINE_API +#endif // Q_SYMBIAN_HAS_GLYPHOUTLINE_API + +// Replication of TGetFontTableParam & friends. +// There is unfortunately no compile time flag like SYMBIAN_FONT_TABLE_API +// that would help us to only replicate these things for Symbian versions +// that do not yet have the font table Api. Symbian's public SDK does +// generally not define any usable macros. +class QSymbianTGetFontTableParam +{ +public: + TUint32 iTag; + TAny *iContent; + TInt iLength; +}; +const TUid QSymbianKFontGetFontTable = {0x102872C1}; +const TUid QSymbianKFontReleaseFontTable = {0x2002AC24}; QT_BEGIN_NAMESPACE -#ifdef Q_SYMBIAN_HAS_FONTTABLE_API QSymbianTypeFaceExtras::QSymbianTypeFaceExtras(CFont* cFont, COpenFont *openFont) : m_cFont(cFont) , m_symbolCMap(false) + , m_openFont(openFont) { - Q_UNUSED(openFont) + if (!symbianFontTableApiAvailable()) { + TAny *trueTypeExtension = NULL; + m_openFont->ExtendedInterface(KUidOpenFontTrueTypeExtension, trueTypeExtension); + m_trueTypeExtension = static_cast<MOpenFontTrueTypeExtension*>(trueTypeExtension); + Q_ASSERT(m_trueTypeExtension); + } } QSymbianTypeFaceExtras::~QSymbianTypeFaceExtras() { - S60->screenDevice()->ReleaseFont(m_cFont); + if (symbianFontTableApiAvailable()) + S60->screenDevice()->ReleaseFont(m_cFont); } QByteArray QSymbianTypeFaceExtras::getSfntTable(uint tag) const { - RFontTable fontTable; - if (fontTable.Open(*m_cFont, tag) != KErrNone) + if (symbianFontTableApiAvailable()) { + QSymbianTGetFontTableParam fontTableParams = { tag, 0, 0 }; + if (m_cFont->ExtendedFunction(QSymbianKFontGetFontTable, &fontTableParams) == KErrNone) { + const char* const fontTableContent = + static_cast<const char *>(fontTableParams.iContent); + const QByteArray fontTable(fontTableContent, fontTableParams.iLength); + m_cFont->ExtendedFunction(QSymbianKFontReleaseFontTable, &fontTableParams); + return fontTable; + } return QByteArray(); - const QByteArray byteArray(reinterpret_cast<const char *> - (fontTable.TableContent()),fontTable.TableLength()); - fontTable.Close(); - return byteArray; + } else { + Q_ASSERT(m_trueTypeExtension->HasTrueTypeTable(tag)); + TInt error = KErrNone; + TInt tableByteLength = 0; + TAny *table = q_check_ptr(m_trueTypeExtension->GetTrueTypeTable(error, tag, &tableByteLength)); + const QByteArray result(static_cast<const char*>(table), tableByteLength); + m_trueTypeExtension->ReleaseTrueTypeTable(table); + return result; + } } bool QSymbianTypeFaceExtras::getSfntTableData(uint tag, uchar *buffer, uint *length) const { - RFontTable fontTable; - if (fontTable.Open(*m_cFont, tag) != KErrNone) - return false; - bool result = true; - const TInt tableByteLength = fontTable.TableLength(); - - if (*length > 0 && *length < tableByteLength) { - result = false; // Caller did not allocate enough memory + if (symbianFontTableApiAvailable()) { + QSymbianTGetFontTableParam fontTableParams = { tag, 0, 0 }; + if (m_cFont->ExtendedFunction(QSymbianKFontGetFontTable, &fontTableParams) == KErrNone) { + if (*length > 0 && *length < fontTableParams.iLength) { + result = false; // Caller did not allocate enough memory + } else { + *length = fontTableParams.iLength; + if (buffer) + memcpy(buffer, fontTableParams.iContent, fontTableParams.iLength); + } + m_cFont->ExtendedFunction(QSymbianKFontReleaseFontTable, &fontTableParams); + } else { + result = false; + } } else { - *length = tableByteLength; - if (buffer) - memcpy(buffer, fontTable.TableContent(), tableByteLength); - } - - fontTable.Close(); - return result; -} - -#else // Q_SYMBIAN_HAS_FONTTABLE_API -QSymbianTypeFaceExtras::QSymbianTypeFaceExtras(CFont* cFont, COpenFont *openFont) - : m_cFont(cFont) - , m_symbolCMap(false) - , m_openFont(openFont) -{ - TAny *trueTypeExtension = NULL; - m_openFont->ExtendedInterface(KUidOpenFontTrueTypeExtension, trueTypeExtension); - m_trueTypeExtension = static_cast<MOpenFontTrueTypeExtension*>(trueTypeExtension); - Q_ASSERT(m_trueTypeExtension); -} - -QSymbianTypeFaceExtras::~QSymbianTypeFaceExtras() -{ -} - -QByteArray QSymbianTypeFaceExtras::getSfntTable(uint tag) const -{ - Q_ASSERT(m_trueTypeExtension->HasTrueTypeTable(tag)); - TInt error = KErrNone; - TInt tableByteLength = 0; - TAny *table = q_check_ptr(m_trueTypeExtension->GetTrueTypeTable(error, tag, &tableByteLength)); - QByteArray result(static_cast<const char*>(table), tableByteLength); - m_trueTypeExtension->ReleaseTrueTypeTable(table); - return result; -} + if (!m_trueTypeExtension->HasTrueTypeTable(tag)) + return false; -bool QSymbianTypeFaceExtras::getSfntTableData(uint tag, uchar *buffer, uint *length) const -{ - if (!m_trueTypeExtension->HasTrueTypeTable(tag)) - return false; + TInt error = KErrNone; + TInt tableByteLength; + TAny *table = + q_check_ptr(m_trueTypeExtension->GetTrueTypeTable(error, tag, &tableByteLength)); - bool result = true; - TInt error = KErrNone; - TInt tableByteLength; - TAny *table = - q_check_ptr(m_trueTypeExtension->GetTrueTypeTable(error, tag, &tableByteLength)); + if (error != KErrNone) { + return false; + } else if (*length > 0 && *length < tableByteLength) { + result = false; // Caller did not allocate enough memory + } else { + *length = tableByteLength; + if (buffer) + memcpy(buffer, table, tableByteLength); + } - if (error != KErrNone) { - return false; - } else if (*length > 0 && *length < tableByteLength) { - result = false; // Caller did not allocate enough memory - } else { - *length = tableByteLength; - if (buffer) - memcpy(buffer, table, tableByteLength); + m_trueTypeExtension->ReleaseTrueTypeTable(table); } - - m_trueTypeExtension->ReleaseTrueTypeTable(table); return result; } -#endif // Q_SYMBIAN_HAS_FONTTABLE_API const uchar *QSymbianTypeFaceExtras::cmap() const { @@ -195,6 +196,39 @@ QFixed QSymbianTypeFaceExtras::unitsPerEm() const return m_unitsPerEm; } +bool QSymbianTypeFaceExtras::symbianFontTableApiAvailable() +{ + enum FontTableApiAvailability { + Unknown, + Available, + Unavailable + }; + static FontTableApiAvailability availability = + QSysInfo::symbianVersion() < QSysInfo::SV_SF_3 ? + Unavailable : Unknown; + if (availability == Unknown) { + // Actually, we should ask CFeatureDiscovery::IsFeatureSupportedL() + // with FfFontTable here. But since at the time of writing, the + // FfFontTable flag check either gave false positives or false + // negatives. Here comes an implicit check via CFont::ExtendedFunction. + QSymbianTGetFontTableParam fontTableParams = { + MAKE_TAG('O', 'S', '/', '2'), 0, 0 }; + QSymbianFbsHeapLock lock(QSymbianFbsHeapLock::Unlock); + CFont *font; + const TInt getFontErr = S60->screenDevice()->GetNearestFontInTwips(font, TFontSpec()); + Q_ASSERT(getFontErr == KErrNone); + if (font->ExtendedFunction(QSymbianKFontGetFontTable, &fontTableParams) == KErrNone) { + font->ExtendedFunction(QSymbianKFontReleaseFontTable, &fontTableParams); + availability = Available; + } else { + availability = Unavailable; + } + S60->screenDevice()->ReleaseFont(font); + lock.relock(); + } + return availability == Available; +} + // duplicated from qfontengine_xyz.cpp static inline unsigned int getChar(const QChar *str, int &i, const int len) { |