qfontengine_qpa.cpp File Reference

#include "qfontengine_qpa_p.h"
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
#include <QtCore/QBuffer>
#include <QtGui/private/qapplication_p.h>
#include <QtGui/QPlatformFontDatabase>
#include <QtGui/private/qpaintengine_raster_p.h>

Go to the source code of this file.

Macros
#define	DEBUG_VERIFY   if (0) qDebug
#define	READ_VERIFY(type, variable)
#define	VERIFY(condition)
#define	VERIFY_TAG(condition)

Functions
static unsigned int	getChar (const QChar *str, int &i, const int len)
template<typename T >
T	readValue (const uchar *&data)
static const uchar *	verifyTag (const uchar *tagPtr, const uchar *endPtr)

Variables
static QFontEngineQPA::TagType	tagTypes [QFontEngineQPA::NumTags]

Macro Definition Documentation

DEBUG_VERIFY

#define DEBUG_VERIFY   if (0) qDebug

Definition at line 86 of file qfontengine_qpa.cpp.

READ_VERIFY

#define READ_VERIFY	(		type,
			variable
	)

Value:

if (tagPtr + sizeof(type) > endPtr) { \
        DEBUG_VERIFY() << "read verify failed in line" << __LINE__; \
        return 0; \
    } \
    variable = qFromBigEndian<type>(tagPtr); \
    DEBUG_VERIFY() << "read value" << variable << "of type " #type; \
    tagPtr += sizeof(type)

Definition at line 89 of file qfontengine_qpa.cpp.

Referenced by verifyTag().

VERIFY

#define VERIFY

(

condition

)

Value:

if (!(condition)) { \
        DEBUG_VERIFY() << "condition " #condition " failed in line" << __LINE__; \
        return 0; \
    }

Definition at line 106 of file qfontengine_qpa.cpp.

Referenced by QFontEngineQPA::verifyHeader().

VERIFY_TAG

#define VERIFY_TAG

(

condition

)

Value:

if (!(condition)) { \
        DEBUG_VERIFY() << "verifying tag condition " #condition " failed in line" << __LINE__ << "with tag" << tag; \
        return 0; \
    }

Definition at line 112 of file qfontengine_qpa.cpp.

Referenced by verifyTag().

Function Documentation

getChar()

static unsigned int getChar ( const QChar *  str, int &  i, const int  len  )

inlinestatic

Definition at line 227 of file qfontengine_qpa.cpp.

Referenced by QFontEngineQPA::canRender(), and QFontEngineQPA::stringToCMap().

{
    uint ucs4 = str[i].unicode();
    if (str[i].isHighSurrogate() && i < len-1 && str[i+1].isLowSurrogate()) {
        ++i;
        ucs4 = QChar::surrogateToUcs4(ucs4, str[i].unicode());
    }
    return ucs4;
}

readValue()

template<typename T >

T readValue

(

const uchar *&

data

)

Definition at line 99 of file qfontengine_qpa.cpp.

{
    T value = qFromBigEndian<T>(data);
    data += sizeof(T);
    return value;
}

verifyTag()

static const uchar* verifyTag ( const uchar *  tagPtr, const uchar *  endPtr  )

inlinestatic

Definition at line 118 of file qfontengine_qpa.cpp.

Referenced by QFontEngineQPA::verifyHeader().

{
    quint16 tag, length;
    READ_VERIFY(quint16, tag);
    READ_VERIFY(quint16, length);
    if (tag == QFontEngineQPA::Tag_EndOfHeader)
        return endPtr;
    if (tag < QFontEngineQPA::NumTags) {
        switch (tagTypes[tag]) {
            case QFontEngineQPA::BitFieldType:
            case QFontEngineQPA::StringType:
                // can't do anything...
                break;
            case QFontEngineQPA::UInt32Type:
                VERIFY_TAG(length == sizeof(quint32));
                break;
            case QFontEngineQPA::FixedType:
                VERIFY_TAG(length == sizeof(quint32));
                break;
            case QFontEngineQPA::UInt8Type:
                VERIFY_TAG(length == sizeof(quint8));
                break;
        }
#if defined(DEBUG_HEADER)
        if (length == 1)
            qDebug() << "tag data" << hex << *tagPtr;
        else if (length == 4)
            qDebug() << "tag data" << hex << tagPtr[0] << tagPtr[1] << tagPtr[2] << tagPtr[3];
#endif
    }
    return tagPtr + length;
}

Variable Documentation

tagTypes

QFontEngineQPA::TagType tagTypes[QFontEngineQPA::NumTags]

static

Initial value:

= {
    QFontEngineQPA::StringType, 
    QFontEngineQPA::StringType, 
    QFontEngineQPA::UInt32Type, 
    QFontEngineQPA::UInt32Type, 
    QFontEngineQPA::StringType, 
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::FixedType,  
    QFontEngineQPA::UInt8Type,  
    QFontEngineQPA::UInt8Type,  
    QFontEngineQPA::UInt8Type,  
    QFontEngineQPA::UInt8Type,  
    QFontEngineQPA::StringType, 
    QFontEngineQPA::BitFieldType
}

Definition at line 58 of file qfontengine_qpa.cpp.

Referenced by QFontEngineQPA::extractHeaderField(), QFontEngineQPF::extractHeaderField(), and verifyTag().