SkFontDescriptor.cpp File Reference

#include "src/core/SkFontDescriptor.h"
#include "include/core/SkData.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkStream.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkTFitsIn.h"
#include "include/private/base/SkTo.h"
#include "src/core/SkStreamPriv.h"
#include <cstddef>
#include <cstdint>

Go to the source code of this file.

Enumerations
enum	{   kInvalid = 0x00 , kFontFamilyName = 0x01 , kFullName = 0x04 , kPostscriptName = 0x06 ,   kWeight = 0x10 , kWidth = 0x11 , kSlant = 0x12 , kItalic = 0x13 ,   kPaletteIndex = 0xF8 , kPaletteEntryOverrides = 0xF9 , kFontVariation = 0xFA , kFactoryId = 0xFC ,   kFontIndex = 0xFD , kSentinel = 0xFF }

Functions
static bool	read_string (SkStream *stream, SkString *string)
static bool	write_string (SkWStream *stream, const SkString &string, uint32_t id)
static bool	write_uint (SkWStream *stream, size_t n, uint32_t id)
static bool	write_scalar (SkWStream *stream, SkScalar n, uint32_t id)
static size_t	read_id (SkStream *stream)

Variables
static constexpr SkScalar	usWidths [9]
static constexpr SkScalar	width_for_usWidth [0x10]

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
kInvalid
kFontFamilyName
kFullName
kPostscriptName
kWeight
kWidth
kSlant
kItalic
kPaletteIndex
kPaletteEntryOverrides
kFontVariation
kFactoryId
kFontIndex
kSentinel

Definition at line 20 of file SkFontDescriptor.cpp.

     {
    kInvalid        = 0x00,
 
    // Related to a font request.
    kFontFamilyName = 0x01, // int length, data[length]
    kFullName       = 0x04, // int length, data[length]
    kPostscriptName = 0x06, // int length, data[length]
    kWeight         = 0x10, // scalar (1 - 1000)
    kWidth          = 0x11, // scalar (percentage, 100 is 'normal')
    kSlant          = 0x12, // scalar (cw angle, 14 is a normal right leaning oblique)
    kItalic         = 0x13, // scalar (0 is Roman, 1 is fully Italic)
 
    // Related to font data. Can also be used with a requested font.
    kPaletteIndex   = 0xF8, // int
    kPaletteEntryOverrides = 0xF9, // int count, (int, u32)[count]
    kFontVariation  = 0xFA, // int count, (u32, scalar)[count]
 
    // Related to font data.
    kFactoryId      = 0xFC, // int
    kFontIndex      = 0xFD, // int
    kSentinel       = 0xFF, // no data
};

Function Documentation

read_id()

static size_t read_id ( SkStream *  stream )

static

Definition at line 75 of file SkFontDescriptor.cpp.

                                                      {
    size_t i;
    if (!stream->readPackedUInt(&i)) { return kInvalid; }
    return i;
}

read_string()

static bool read_string ( SkStream *  stream, SkString *  string  )

static

Definition at line 45 of file SkFontDescriptor.cpp.

                                                                          {
    size_t length;
    if (!stream->readPackedUInt(&length)) { return false; }
    if (length > 0) {
        if (StreamRemainingLengthIsBelow(stream, length)) {
            return false;
        }
        string->resize(length);
        if (stream->read(string->data(), length) != length) { return false; }
    }
    return true;
}

write_scalar()

static bool write_scalar ( SkWStream *  stream, SkScalar  n, uint32_t  id  )

static

Definition at line 70 of file SkFontDescriptor.cpp.

                                                                     {
    return stream->writePackedUInt(id) &&
           stream->writeScalar(n);
}

write_string()

static bool write_string ( SkWStream *  stream, const SkString &  string, uint32_t  id  )

static

Definition at line 58 of file SkFontDescriptor.cpp.

                                                                                 {
    if (string.isEmpty()) { return true; }
    return stream->writePackedUInt(id) &&
           stream->writePackedUInt(string.size()) &&
           stream->write(string.c_str(), string.size());
}

write_uint()

static bool write_uint ( SkWStream *  stream, size_t  n, uint32_t  id  )

static

Definition at line 65 of file SkFontDescriptor.cpp.

                                                                 {
    return stream->writePackedUInt(id) &&
           stream->writePackedUInt(n);
}

Variable Documentation

usWidths

constexpr SkScalar usWidths[9]

staticconstexpr

Initial value:

{
    1, 2, 3, 4, 5, 6, 7, 8, 9
}

Definition at line 81 of file SkFontDescriptor.cpp.

                                      {
    1, 2, 3, 4, 5, 6, 7, 8, 9
};

width_for_usWidth

constexpr SkScalar width_for_usWidth[0x10]

staticconstexpr

Initial value:

= {
    50,
    50, 62.5, 75, 87.5, 100, 112.5, 125, 150, 200,
    200, 200, 200, 200, 200, 200
}

Definition at line 84 of file SkFontDescriptor.cpp.

                                                    {
    50,
    50, 62.5, 75, 87.5, 100, 112.5, 125, 150, 200,
    200, 200, 200, 200, 200, 200
};