static unsigned long Stream_ReadFunc(FT_Stream stream, unsigned long offset, unsigned char* buffer, unsigned long count)
{
InputStream *pSource;
pSource = (InputStream *)stream->descriptor.pointer;
pSource->Seek(offset, SEEK_SET);
return pSource->Read(buffer, count);
}
void
VFont::ReadPreamble (/*[in]*/ InputStream & inputStream)
{
if (inputStream.ReadByte() != id_byte)
{
FATAL_DVI_ERROR ("VFont::ReadPreamble",
T_("Bad VF file."),
dviInfo.fileName.c_str());
}
unsigned long commentSize = inputStream.ReadByte();
char tmp[256];
inputStream.Read (tmp, commentSize);
tmp[commentSize] = 0;
dviInfo.comment = tmp;
int my_checkSum = inputStream.ReadSignedQuad();
int my_designSize = inputStream.ReadSignedQuad();
trace_vfont->WriteFormattedLine
("libdvi",
"comment: %s",
dviInfo.comment.c_str());
trace_vfont->WriteFormattedLine
("libdvi",
"checkSum: 0%o",
my_checkSum);
trace_vfont->WriteFormattedLine
("libdvi",
"designSize: %d",
my_designSize);
if (my_designSize * tfmConv != designSize)
{
trace_error->WriteFormattedLine
("libdvi",
T_("%s: designSize mismatch"),
dviInfo.name.c_str());
}
if (my_checkSum != checkSum)
{
trace_error->WriteFormattedLine
("libdvi",
T_("%s: checkSum mismatch"),
dviInfo.name.c_str());
}
}
cairo_surface_t *CairoRenderer::CreateImageSurface(const Stream *pStream, int nWidth, int nHeight)
{
cairo_surface_t *pSurface;
unsigned char *ptr, pixel[3];
InputStream *pSource;
int i;
pSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, nWidth, nHeight);
ptr = cairo_image_surface_get_data(pSurface);
pSource = m_pPDF->CreateInputStream(pStream);
for (i = nWidth * nHeight; i > 0; --i)
{
pSource->Read(pixel, 3);
ptr[0] = pixel[2];
ptr[1] = pixel[1];
ptr[2] = pixel[0];
ptr[3] = 0xFF;
ptr += 4;
}
delete pSource;
cairo_surface_mark_dirty(pSurface);
return pSurface;
}
void
VFont::ReadFontDef (/*[in]*/ InputStream & inputStream,
/*[in]*/ short fntDefX)
{
int fontNum;
switch (fntDefX)
{
case fnt_def1:
fontNum = inputStream.ReadByte();
break;
case fnt_def2:
fontNum = inputStream.ReadPair();
break;
case fnt_def3:
fontNum = inputStream.ReadTrio();
break;
case fnt_def4:
fontNum = inputStream.ReadSignedQuad();
break;
default:
FATAL_DVI_ERROR ("VFont::ReadFontDef",
T_("Bad VF file."),
dviInfo.fileName.c_str());
break;
}
trace_vfont->WriteFormattedLine
("libdvi",
T_("defining font %d"),
fontNum);
int cs = inputStream.ReadSignedQuad();
int ss = inputStream.ReadSignedQuad();
int ds = inputStream.ReadSignedQuad();
int areaNameSize = inputStream.ReadByte();
int fontNameSize = inputStream.ReadByte();
char szArea[256];
inputStream.Read (szArea, areaNameSize);
szArea[areaNameSize] = 0;
char szName[256];
inputStream.Read (szName, fontNameSize);
szName[fontNameSize] = 0;
trace_vfont->WriteFormattedLine
("libdvi",
"areaname: %s",
szArea);
trace_vfont->WriteFormattedLine
("libdvi",
"fontname: %s",
szName);
trace_vfont->WriteFormattedLine
("libdvi",
"checkSum: 0%o",
cs);
trace_vfont->WriteFormattedLine
("libdvi",
"scaledSize: %d",
ss);
trace_vfont->WriteFormattedLine
("libdvi",
"designSize: %d",
ds);
DviFont * pFont;
PathName fileName;
if (SessionWrapper(true)->FindFile(szName, FileType::VF, fileName))
{
trace_vfont->WriteFormattedLine
("libdvi",
T_("found vf file %s"),
Q_(fileName));
pFont =
new VFont (pDviImpl,
cs,
ScaleFix(ss, scaledAt),
static_cast<int>(ds * tfmConv),
szArea,
szName,
fileName.Get(),
tfmConv,
conv,
mag,
metafontMode.c_str(),
baseDpi);
}
else if (pDviImpl->GetPageMode() != DviPageMode::Dvips)
{
pFont =
new PkFont (pDviImpl,
cs,
ScaleFix(ss, scaledAt),
static_cast<int>(ds * tfmConv),
szArea,
szName,
"",
tfmConv,
conv,
mag,
metafontMode.c_str(),
baseDpi);
}
else
{
pFont =
new Tfm (pDviImpl,
cs,
ScaleFix(ss, scaledAt),
static_cast<int>(ds * tfmConv),
szArea,
szName,
"",
tfmConv,
conv);
}
fontMap[fontNum] = pFont;
}
void
PkChar::Read (/*[in]*/ InputStream & inputstream,
/*[in]*/ int flag)
{
this->flag = flag;
if (IsShort())
{
// read character preamble (short form)
packetSize = (((static_cast<int>(GetLower3()) % 4) << 8
| inputstream.ReadByte())
- 8);
charCode = inputstream.ReadByte();
tfm = inputstream.ReadTrio();
cx = inputstream.ReadByte();
rasterWidth = inputstream.ReadByte();
rasterHeight = inputstream.ReadByte();
cxOffset = inputstream.ReadSignedByte();
cyOffset = inputstream.ReadSignedByte();
}
else if (IsExtendedShort())
{
// read character preamble (extended short form)
packetSize = (((static_cast<int>(GetLower3()) % 4) << 16
| inputstream.ReadPair())
- 13);
charCode = inputstream.ReadByte();
tfm = inputstream.ReadTrio();
cx = inputstream.ReadPair();
rasterWidth = inputstream.ReadPair();
rasterHeight = inputstream.ReadPair();
cxOffset = inputstream.ReadSignedPair();
cyOffset = inputstream.ReadSignedPair();
}
else
{
// read character preamble (long form)
packetSize = inputstream.ReadSignedQuad() - 28;
charCode = inputstream.ReadSignedQuad();
tfm = inputstream.ReadSignedQuad();
cx = inputstream.ReadSignedQuad();
cx = (cx + 0x10000) >> 16;
cy = inputstream.ReadSignedQuad();
cy = (cy + 0x10000) >> 16;
rasterWidth = inputstream.ReadSignedQuad();
rasterHeight = inputstream.ReadSignedQuad();
cxOffset = inputstream.ReadSignedQuad();
cyOffset = inputstream.ReadSignedQuad();
}
tfm = ScaleFix(tfm, pDviFont->GetScaledAt());
if (packetSize == 0)
{
#if 0
trace_error->WriteFormattedLine
("libdvi",
T_("%d: no glyph!"),
charCode);
#endif
}
else
{
trace_pkchar->WriteFormattedLine
("libdvi",
T_("going to read character %d"),
charCode);
pPackedRaster = new BYTE[packetSize];
inputstream.Read (pPackedRaster, packetSize);
}
}
void PngReadFunction(png_structp structp, png_bytep bytep, png_size_t size)
{
InputStream *stream = (InputStream*)png_get_io_ptr(structp);
stream->Read(bytep, size);
}