CFX_GlyphBitmap* CPDF_Type3Cache::RenderGlyph(CPDF_Type3Glyphs* pSize,
FX_DWORD charcode,
const CFX_AffineMatrix* pMatrix,
FX_FLOAT retinaScaleX,
FX_FLOAT retinaScaleY) {
const CPDF_Type3Char* pChar = m_pFont->LoadChar(charcode);
if (!pChar || !pChar->m_pBitmap)
return nullptr;
CFX_DIBitmap* pBitmap = pChar->m_pBitmap;
CFX_AffineMatrix image_matrix, text_matrix;
image_matrix = pChar->m_ImageMatrix;
text_matrix.Set(pMatrix->a, pMatrix->b, pMatrix->c, pMatrix->d, 0, 0);
image_matrix.Concat(text_matrix);
CFX_DIBitmap* pResBitmap = NULL;
int left, top;
if (FXSYS_fabs(image_matrix.b) < FXSYS_fabs(image_matrix.a) / 100 &&
FXSYS_fabs(image_matrix.c) < FXSYS_fabs(image_matrix.d) / 100) {
int top_line, bottom_line;
top_line = _DetectFirstLastScan(pBitmap, TRUE);
bottom_line = _DetectFirstLastScan(pBitmap, FALSE);
if (top_line == 0 && bottom_line == pBitmap->GetHeight() - 1) {
FX_FLOAT top_y = image_matrix.d + image_matrix.f;
FX_FLOAT bottom_y = image_matrix.f;
FX_BOOL bFlipped = top_y > bottom_y;
if (bFlipped) {
FX_FLOAT temp = top_y;
top_y = bottom_y;
bottom_y = temp;
}
pSize->AdjustBlue(top_y, bottom_y, top_line, bottom_line);
pResBitmap = pBitmap->StretchTo(
(int)(FXSYS_round(image_matrix.a) * retinaScaleX),
(int)((bFlipped ? top_line - bottom_line : bottom_line - top_line) *
retinaScaleY));
top = top_line;
if (image_matrix.a < 0) {
image_matrix.Scale(retinaScaleX, retinaScaleY);
left = FXSYS_round(image_matrix.e + image_matrix.a);
} else {
left = FXSYS_round(image_matrix.e);
}
} else {
}
}
if (pResBitmap == NULL) {
image_matrix.Scale(retinaScaleX, retinaScaleY);
pResBitmap = pBitmap->TransformTo(&image_matrix, left, top);
}
if (pResBitmap == NULL) {
return NULL;
}
CFX_GlyphBitmap* pGlyph = new CFX_GlyphBitmap;
pGlyph->m_Left = left;
pGlyph->m_Top = -top;
pGlyph->m_Bitmap.TakeOver(pResBitmap);
delete pResBitmap;
return pGlyph;
}
