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1a6737314fc11dfb5ee00cbc147e22a7b2d2c0d5
core/DesktopEditor/fontengine/GlyphString.cpp

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11 KiB
C++
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#include "GlyphString.h"
TGlyphBitmap::TGlyphBitmap()
{
nX = 0;
nY = 0;
nWidth = 0;
nHeight = 0;
bAA = FALSE;
pData = NULL;
bFreeData = NULL;
}
TGlyphBitmap::~TGlyphBitmap()
{
if (bFreeData && pData != NULL)
{
delete []pData;
pData = NULL;
}
}
TGlyph::TGlyph()
{
}
TGlyph::~TGlyph()
{
}
////////////////////////////////
CGlyphString::CGlyphString()
{
m_fX = 0;
m_fY = 0;
m_fEndX = 0;
m_fEndY = 0;
m_nGlyphIndex = -1;
m_nGlyphsCount = 0;
m_pGlyphsBuffer = NULL;
m_arrCTM[0] = 1;
m_arrCTM[1] = 0;
m_arrCTM[2] = 0;
m_arrCTM[3] = 1;
m_arrCTM[4] = 0;
m_arrCTM[5] = 0;
m_fTransX = 0;
m_fTransY = 0;
m_dIDet = 1.0;
}
CGlyphString::CGlyphString(const std::wstring& wsString, float fX, float fY)
{
const wchar_t* pWchars = wsString.c_str();
m_nGlyphIndex = 0;
m_nGlyphsCount = wsString.length();
if ( m_nGlyphsCount > 0 )
{
m_pGlyphsBuffer = new TGlyph[m_nGlyphsCount];
if (sizeof(wchar_t) == 2)
{
int nEmpty = 0;
for ( int nIndex = 0; nIndex < m_nGlyphsCount; ++nIndex )
{
int code = (int)pWchars[nIndex];
if (code >= 0xD800 && code <= 0xDFFF && (nIndex + 1) < m_nGlyphsCount)
{
++nIndex;
++nEmpty;
code = 0x10000 + (((code & 0x3FF) << 10) | (0x03FF & pWchars[nIndex]));
}
m_pGlyphsBuffer[nIndex].lUnicode = code;
m_pGlyphsBuffer[nIndex].bBitmap = false;
}
m_nGlyphsCount -= nEmpty;
}
else
{
for ( int nIndex = 0; nIndex < m_nGlyphsCount; ++nIndex )
{
m_pGlyphsBuffer[nIndex].lUnicode = (long)pWchars[nIndex];
m_pGlyphsBuffer[nIndex].bBitmap = false;
}
}
}
else
{
m_pGlyphsBuffer = NULL;
}
m_fX = fX;
m_fY = fY;
m_arrCTM[0] = 1;
m_arrCTM[1] = 0;
m_arrCTM[2] = 0;
m_arrCTM[3] = 1;
m_arrCTM[4] = 0;
m_arrCTM[5] = 0;
m_fTransX = 0;
m_fTransY = 0;
}
CGlyphString::~CGlyphString()
{
if ( m_pGlyphsBuffer )
delete []m_pGlyphsBuffer;
}
void CGlyphString::SetString(const std::wstring& wsString, float fX, float fY)
{
m_fX = fX + m_fTransX;
m_fY = fY + m_fTransY;
if ( m_pGlyphsBuffer )
delete []m_pGlyphsBuffer;
const wchar_t* pWchars = wsString.c_str();
m_nGlyphIndex = 0;
m_nGlyphsCount = wsString.length();
if ( m_nGlyphsCount > 0 )
{
m_pGlyphsBuffer = new TGlyph[m_nGlyphsCount];
if (sizeof(wchar_t) == 2)
{
int nEmpty = 0;
for ( int nIndex = 0; nIndex < m_nGlyphsCount; ++nIndex )
{
int code = (int)pWchars[nIndex];
if (code >= 0xD800 && code <= 0xDFFF && (nIndex + 1) < m_nGlyphsCount)
{
++nIndex;
++nEmpty;
code = 0x10000 + (((code & 0x3FF) << 10) | (0x03FF & pWchars[nIndex]));
}
m_pGlyphsBuffer[nIndex].lUnicode = code;
m_pGlyphsBuffer[nIndex].bBitmap = false;
}
m_nGlyphsCount -= nEmpty;
}
else
{
for ( int nIndex = 0; nIndex < m_nGlyphsCount; ++nIndex )
{
m_pGlyphsBuffer[nIndex].lUnicode = (long)pWchars[nIndex];
m_pGlyphsBuffer[nIndex].bBitmap = false;
}
}
}
else
{
m_pGlyphsBuffer = NULL;
}
}
void CGlyphString::SetStringGID(const LONG& gid, float fX, float fY)
{
m_fX = fX + m_fTransX;
m_fY = fY + m_fTransY;
m_nGlyphsCount = 1;
m_nGlyphIndex = 0;
if (NULL == m_pGlyphsBuffer)
m_pGlyphsBuffer = new TGlyph[1];
// TODO:
// m_pGlyphsBuffer[0].Clear();
m_pGlyphsBuffer[0].lUnicode = gid;
m_pGlyphsBuffer[0].bBitmap = false;
}
void CGlyphString::Reset()
{
if ( m_pGlyphsBuffer )
delete []m_pGlyphsBuffer;
m_fX = 0;
m_fY = 0;
m_fEndX = 0;
m_fEndY = 0;
m_nGlyphIndex = -1;
m_nGlyphsCount = 0;
m_pGlyphsBuffer = NULL;
m_arrCTM[0] = 1;
m_arrCTM[1] = 0;
m_arrCTM[2] = 0;
m_arrCTM[3] = 1;
m_arrCTM[4] = 0;
m_arrCTM[5] = 0;
m_fTransX = 0;
m_fTransY = 0;
}
int CGlyphString::GetLength()
{
return m_nGlyphsCount;
}
void CGlyphString::SetBBox(int nIndex, float fLeft, float fTop, float fRight, float fBottom)
{
if ( m_nGlyphsCount <= 0 )
return;
int nCurIndex = min( m_nGlyphsCount - 1, max( 0, nIndex ) );
m_pGlyphsBuffer[nCurIndex].fLeft = fLeft;
m_pGlyphsBuffer[nCurIndex].fTop = fTop;
m_pGlyphsBuffer[nCurIndex].fRight = fRight;
m_pGlyphsBuffer[nCurIndex].fBottom = fBottom;
}
void CGlyphString::SetMetrics(int nIndex, float fWidth, float fHeight, float fHoriAdvance, float fHoriBearingX, float fHoriBearingY, float fVertAdvance, float fVertBearingX, float fVertBearingY)
{
if ( m_nGlyphsCount <= 0 )
return;
int nCurIndex = min( m_nGlyphsCount - 1, max( 0, nIndex ) );
m_pGlyphsBuffer[nCurIndex].oMetrics.fHeight = fHeight;
m_pGlyphsBuffer[nCurIndex].oMetrics.fHoriAdvance = fHoriAdvance;
m_pGlyphsBuffer[nCurIndex].oMetrics.fHoriBearingX = fHoriBearingX;
m_pGlyphsBuffer[nCurIndex].oMetrics.fHoriBearingY = fHoriBearingY;
m_pGlyphsBuffer[nCurIndex].oMetrics.fVertAdvance = fVertAdvance;
m_pGlyphsBuffer[nCurIndex].oMetrics.fVertBearingX = fVertBearingX;
m_pGlyphsBuffer[nCurIndex].oMetrics.fVertBearingY = fVertBearingY;
m_pGlyphsBuffer[nCurIndex].oMetrics.fWidth = fWidth;
}
void CGlyphString::SetStartPoint(int nIndex, float fX, float fY)
{
if ( m_nGlyphsCount <= 0 )
return;
int nCurIndex = min( m_nGlyphsCount - 1, max( 0, nIndex ) );
m_pGlyphsBuffer[nCurIndex].fX = fX;
m_pGlyphsBuffer[nCurIndex].fY = fY;
}
void CGlyphString::SetState(int nIndex, EGlyphState eState)
{
if ( m_nGlyphsCount <= 0 )
return;
int nCurIndex = min( m_nGlyphsCount - 1, max( 0, nIndex ) );
m_pGlyphsBuffer[nCurIndex].eState = eState;
}
void CGlyphString::GetBBox(float *pfLeft, float *pfTop, float *pfRight, float *pfBottom, int nIndex, int nType)
{
int nCurIndex = 0;
if ( nIndex < 0 )
{
if ( m_nGlyphsCount <= 0 || m_nGlyphIndex < 1 || m_nGlyphIndex > m_nGlyphsCount )
return;
nCurIndex = m_nGlyphIndex - 1;
}
else
{
if ( m_nGlyphsCount <= 0 )
return;
nCurIndex = min( m_nGlyphsCount - 1, max( 0, nIndex ) );
}
float fBottom = -m_pGlyphsBuffer[nCurIndex].fBottom;
float fRight = m_pGlyphsBuffer[nCurIndex].fRight;
float fLeft = m_pGlyphsBuffer[nCurIndex].fLeft;
float fTop = -m_pGlyphsBuffer[nCurIndex].fTop;
if ( 0 == nType && !( 1 == m_arrCTM[0] && 0 == m_arrCTM[1] && 0 == m_arrCTM[2] && 1 == m_arrCTM[3] && 0 == m_arrCTM[4] && 0 == m_arrCTM[5] ) )
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BBox
float arrfX[4] = { fLeft, fLeft, fRight, fRight };
float arrfY[4] = { fTop, fBottom, fBottom, fTop };
float fMinX = (float)(arrfX[0] * m_arrCTM[0] + arrfY[0] * m_arrCTM[2]);
float fMinY = (float)(arrfX[0] * m_arrCTM[1] + arrfY[0] * m_arrCTM[3]);
float fMaxX = fMinX;
float fMaxY = fMinY;
for ( int nIndex = 1; nIndex < 4; nIndex++ )
{
float fX = (float)(arrfX[nIndex] * m_arrCTM[0] + arrfY[nIndex] * m_arrCTM[2]);
float fY = (float)(arrfX[nIndex] * m_arrCTM[1] + arrfY[nIndex] * m_arrCTM[3]);
fMaxX = max( fMaxX, fX );
fMinX = min( fMinX, fX );
fMaxY = max( fMaxY, fY );
fMinY = min( fMinY, fY );
}
fLeft = fMinX;
fRight = fMaxX;
fTop = fMinY;
fBottom = fMaxY;
}
*pfLeft = fLeft + m_pGlyphsBuffer[nCurIndex].fX + m_fX;
*pfRight = fRight + m_pGlyphsBuffer[nCurIndex].fX + m_fX;
*pfTop = fTop + m_pGlyphsBuffer[nCurIndex].fY + m_fY;
*pfBottom = fBottom + m_pGlyphsBuffer[nCurIndex].fY + m_fY;
}
void CGlyphString::GetBBox2(float *pfLeft, float *pfTop, float *pfRight, float *pfBottom)
{
if ( m_nGlyphsCount <= 0 )
{
*pfLeft = 0;
*pfRight = 0;
*pfBottom = 0;
*pfTop = 0;
}
float fBottom = 0;
float fRight = 0;
float fLeft = 0;
float fTop = 0;
for ( int nIndex = 0; nIndex < m_nGlyphsCount; nIndex++ )
{
fBottom = max( fBottom, -m_pGlyphsBuffer[nIndex].fBottom );
//fRight = max( fRight, m_pGlyphsBuffer[nIndex].fRight );
//fLeft = min( fLeft, m_pGlyphsBuffer[nIndex].fLeft );
fTop = min( fTop, -m_pGlyphsBuffer[nIndex].fTop );
}
if ( !( 1 == m_arrCTM[0] && 0 == m_arrCTM[1] && 0 == m_arrCTM[2] && 1 == m_arrCTM[3] && 0 == m_arrCTM[4] && 0 == m_arrCTM[5] ) )
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> BBox
float arrfX[4] = { fLeft, fLeft, fRight, fRight };
float arrfY[4] = { fTop, fBottom, fBottom, fTop };
float fMinX = (float)(arrfX[0] * m_arrCTM[0] + arrfY[0] * m_arrCTM[2]);
float fMinY = (float)(arrfX[0] * m_arrCTM[1] + arrfY[0] * m_arrCTM[3]);
float fMaxX = fMinX;
float fMaxY = fMinY;
for ( int nIndex = 1; nIndex < 4; nIndex++ )
{
float fX = (float)(arrfX[nIndex] * m_arrCTM[0] + arrfY[nIndex] * m_arrCTM[2]);
float fY = (float)(arrfX[nIndex] * m_arrCTM[1] + arrfY[nIndex] * m_arrCTM[3]);
fMaxX = max( fMaxX, fX );
fMinX = min( fMinX, fX );
fMaxY = max( fMaxY, fY );
fMinY = min( fMinY, fY );
}
fLeft = fMinX;
fRight = fMaxX;
fTop = fMinY;
fBottom = fMaxY;
}
fLeft += m_fX;
fRight += m_fX;
fTop += m_fY;
fBottom += m_fY;
*pfLeft = min( fLeft, min(m_fX, m_fEndX) );
*pfRight = max( fRight, max(m_fX, m_fEndX) );
*pfTop = min( fTop, min(m_fY, m_fEndY) );
*pfBottom = max( fBottom, max(m_fY, m_fEndY) );
}
void CGlyphString::SetCTM(float fA, float fB, float fC, float fD, float fE ,float fF)
{
m_arrCTM[0] = fA;
m_arrCTM[1] = fB;
m_arrCTM[2] = fC;
m_arrCTM[3] = fD;
m_arrCTM[4] = fE;
m_arrCTM[5] = fF;
double dDet = fA * fD - fB * fC;
if ( dDet < 0.001 && dDet >= 0 )
dDet = 0.001;
else if ( dDet > - 0.001 && dDet < 0 )
dDet = -0.001;
m_dIDet = 1 / dDet;
}
void CGlyphString::ResetCTM()
{
m_arrCTM[0] = 1;
m_arrCTM[1] = 0;
m_arrCTM[2] = 0;
m_arrCTM[3] = 1;
m_arrCTM[4] = 0;
m_arrCTM[5] = 0;
m_dIDet = 1;
}
void CGlyphString::Transform(float *pfX, float *pfY)
{
float fX = *pfX, fY = *pfY;
*pfX = (float) ( fX * m_arrCTM[0] + fY * m_arrCTM[2] + m_arrCTM[4] );
*pfY = (float) ( fX * m_arrCTM[1] + fY * m_arrCTM[3] + m_arrCTM[5] );
}
void CGlyphString::SetTrans(float fX, float fY)
{
m_fTransX = (float) ( m_dIDet * ( fX * m_arrCTM[3] - m_arrCTM[2] * fY ) );
m_fTransY = (float) ( m_dIDet * ( fY * m_arrCTM[0] - m_arrCTM[1] * fX ) );
}
TGlyph* CGlyphString::GetAt(int nIndex)
{
if ( m_nGlyphsCount <= 0 )
{
return NULL;
}
int nCurIndex = min( m_nGlyphsCount - 1, max( 0, nIndex ) );
return &(m_pGlyphsBuffer[nCurIndex]);
}
BOOL CGlyphString::GetNext(TGlyph*& pGlyph)
{
if ( m_nGlyphIndex >= m_nGlyphsCount || m_nGlyphIndex < 0 )
{
pGlyph = NULL;
return FALSE;
}
pGlyph = &m_pGlyphsBuffer[m_nGlyphIndex];
m_nGlyphIndex++;
return TRUE;
}
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