void VConTextPart::SetLen(unsigned anLen, unsigned FontWidth)
{
_ASSERTE(anLen>0 && anLen<=0xFFFF);
Length = anLen;
// May this part be shrinked freely?
if (Flags & TRF_TextSpacing)
{
Flags |= TRF_SizeFree;
}
else if ((Flags & TRF_TextPseudograph) && isCharPseudoFree(*Chars))
{
wchar_t wc = *Chars; bool bDiffers = false;
for (unsigned i = 1; i < Length; i++)
{
if (Chars[i] != wc)
{
bDiffers = true; break;
}
}
if (!bDiffers)
Flags |= TRF_SizeFree;
}
unsigned FontWidth2 = 2*FontWidth;
const CharAttr* pca = Attrs;
TextCharType* pcf = CharFlags;
unsigned* pcw = CharWidth;
// Preliminary character widths estimation
if (Flags & TRF_SizeFree)
{
// spaces, horizontal lines (frames), etc. They may be shrinked freely
for (unsigned left = anLen; left--; pca++, pcf++)
{
*pcw = FontWidth; // if non-shrinked
*pcf = TCF_WidthFree;
}
}
else
{
//WARNING: We rely here on pca->Flags2, but not on self evaluated data?
for (unsigned left = anLen; left--; pca++, pcf++, pcw++)
{
if (pca->Flags2 & (CharAttr2_NonSpacing|CharAttr2_Combining))
{
// zero-width
*pcw = 0;
*pcf = TCF_WidthZero;
}
else if (pca->Flags2 & CharAttr2_DoubleSpaced)
{
*pcw = FontWidth2;
*pcf = TCF_WidthDouble;
}
else
{
*pcw = FontWidth;
*pcf = TCF_WidthNormal;
}
}
}
}
void VConTextPart::Done(uint anLen, uint FontWidth)
{
_ASSERTE(anLen>0 && FontWidth>0);
Length = anLen;
TotalWidth = MinWidth = 0;
// May this part be shrinked freely?
if (Flags & TRF_TextSpacing)
{
Flags |= TRF_SizeFree;
}
else if ((Flags & TRF_TextPseudograph) && isCharPseudoFree(*Chars))
{
wchar_t wc = *Chars; bool bDiffers = false;
for (uint i = 1; i < Length; i++)
{
if (Chars[i] != wc)
{
bDiffers = true; break;
}
}
if (!bDiffers)
Flags |= TRF_SizeFree;
}
// Helper - double cell characters
uint FontWidth2 = 2*FontWidth;
uint FontWidth2M = FontWidth2 * DEF_DOUBLE_MUL / DEF_DOUBLE_DIV;
uint FontWidthM = FontWidth * DEF_SINGLE_MUL / DEF_SINGLE_DIV;
const wchar_t* pch = Chars;
const CharAttr* pca = Attrs;
TextCharType* pcf = CharFlags;
uint* pcw = CharWidth;
ZeroStruct(AllWidths);
//TODO: Continuous spaces must be processed separately
if (Flags & TRF_SizeFree)
{
VConTextPartWidth& aw = AllWidths[TCF_WidthFree];
for (uint left = anLen; left--; pch++, pca++, pcf++, pcw++)
{
_ASSERTE(!(pca->Flags2 & (CharAttr2_NonSpacing|CharAttr2_Combining|CharAttr2_DoubleSpaced)));
*pcw = FontWidth; // if non-shrinked
*pcf = TCF_WidthFree;
TotalWidth += FontWidth;
aw.Count++;
aw.Width += FontWidth;
}
aw.MinWidth += FontWidth;
}
else
{
for (uint left = anLen; left--; pch++, pca++, pcf++, pcw++)
{
if (pca->Flags2 & (CharAttr2_NonSpacing|CharAttr2_Combining))
{
// zero-width
*pcw = 0;
*pcf = TCF_WidthZero;
VConTextPartWidth& aw = AllWidths[TCF_WidthZero];
aw.Count++; // Informational
}
else if (pca->Flags2 & CharAttr2_DoubleSpaced)
{
*pcw = FontWidth2;
*pcf = TCF_WidthDouble;
TotalWidth += FontWidth2;
// Even double-width space have to be same width as ‘normal’ CJK glyph
MinWidth += FontWidth2M;
VConTextPartWidth& aw = AllWidths[TCF_WidthDouble];
aw.Count++;
aw.Width += FontWidth2;
aw.MinWidth += FontWidth2M;
}
else /*if (gpSet->isMonospace
|| (gpSet->isFixFarBorders && isCharAltFont(ch))
|| (gpSet->isEnhanceGraphics && isCharProgress(ch))
)*/
{
//TODO: Caller must process fonts and set "real" character widths for proportinal fonts
*pcw = FontWidth;
*pcf = TCF_WidthNormal;
VConTextPartWidth& aw = AllWidths[TCF_WidthNormal];
aw.Count++;
aw.Width += FontWidth;
aw.MinWidth += FontWidthM;
}
}
}
TotalWidth = AllWidths[TCF_WidthFree].Width
+ AllWidths[TCF_WidthNormal].Width
+ AllWidths[TCF_WidthDouble].Width
;
MinWidth = AllWidths[TCF_WidthFree].MinWidth
+ AllWidths[TCF_WidthNormal].MinWidth
+ AllWidths[TCF_WidthDouble].MinWidth
;
}