void CLineImpl::Prepare(
IZ_UINT8* dst,
IZ_UINT pitch,
IZ_UINT ascent,
IFontHost* host)
{
IZ_UINT code = 0;
CUString string;
string.Init(m_Encode, m_Text, m_Bytes);
string.BeginIter();
IZ_UINT x = 0;
for (;;)
{
if (m_FontHost->GetEncodeType() == E_FONT_CHAR_ENCODE_UNICODE)
{
code = string.GetNextAsUnicode();
}
else
{
code = string.GetNext();
}
if (code == 0)
{
break;
}
IZ_UINT id = m_FontHost->GetGlyphID(code);
SGlyphMetrics metrics;
if (m_FontHost->GetGlyphMetricsByID(id, metrics))
{
x = this->CopyImage(
id,
dst,
x,
pitch,
ascent);
}
else
{
// TODO
}
}
string.EndIter();
}
IZ_UINT CLineImpl::GetLineWidth()
{
if (m_Text == IZ_NULL)
{
return 0;
}
CUString string;
string.Init(m_Encode, m_Text, m_Bytes);
IZ_UINT width = 0;
IZ_UINT code = 0;
string.BeginIter();
for (;;)
{
if (m_FontHost->GetEncodeType() == E_FONT_CHAR_ENCODE_UNICODE)
{
code = string.GetNextAsUnicode();
}
else
{
code = string.GetNext();
}
if (code == 0)
{
break;
}
SGlyphMetrics metrics;
if (m_FontHost->GetGlyphMetricsByCode(code, metrics))
{
width += metrics.advance;
}
else
{
// TODO
}
}
string.EndIter();
return width;
}
IZ_BOOL CParagraphGroupImpl::Init(
IFontHost* host,
CUString& str,
void* userData)
{
SAFE_REPLACE(m_FontHost, host);
m_LineHeight = m_FontHost->GetPixelSize();
m_Ascent = m_FontHost->GetAscender();
IZ_UINT prev = 0;
IZ_UINT code = 0;
IZ_BOOL isSeparated = IZ_FALSE;
const IZ_UINT8* start = str.GetTextPtr();
IZ_UINT lastPos = 1;
str.BeginIter();
for (;;)
{
if (isSeparated)
{
start = str.GetIterPtr();
isSeparated = IZ_FALSE;
}
code = str.GetNext();
if (prev == CH_CR && code == CH_LF)
{
// skip
code = str.GetNext();
}
prev = code;
if (_IsSeparator(code) || code == 0)
{
IZ_UINT pos = static_cast<IZ_UINT>(str.GetIterDistance());
IZ_UINT bytes = pos - lastPos;
lastPos = pos;
CParagraph* paragraph = CParagraphImpl::CreateParagraph(
m_Allocator,
host,
str.GetCharCode(),
start,
bytes,
userData);
AddParagraph(paragraph);
if (code == 0)
{
break;
}
else
{
isSeparated = IZ_TRUE;
}
}
}
str.EndIter();
return IZ_TRUE;
}