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improve superscript/subscript/fraction in the transliteration fallback

This commit is contained in:
ftang%netscape.com 2000-04-14 22:32:03 +00:00
Родитель a55b8ea989
Коммит 3cb9d9a11f
2 изменённых файлов: 265 добавлений и 4 удалений
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267
gfx/src/mac/nsUnicodeRenderingToolkit.cpp
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@ -38,6 +38,7 @@ static NS_DEFINE_CID(kSaveAsCharsetCID, NS_SAVEASCHARSET_CID);
//#define DISABLE_TEC_FALLBACK
//#define DISABLE_PRECOMPOSEHANGUL_FALLBACK
//#define DISABLE_LATINL_FALLBACK
//#define DISABLE_ATSUI_FALLBACK
//#define DISABLE_TRANSLITERATE_FALLBACK
//#define DISABLE_UPLUS_FALLBACK
@ -345,7 +346,48 @@ PRBool nsUnicodeRenderingToolkit :: TransliterateFallbackGetWidth(
nsAutoString tmp(aCharPt, 1);
char* conv = nsnull;
if(NS_SUCCEEDED(mTrans->Convert(tmp.GetUnicode(), &conv)) && conv) {
GetScriptTextWidth(conv, nsCRT::strlen(conv),oWidth);
GrafPtr thePort;
::GetPort(&thePort);
short aSize = ::GetPortTextSize(thePort);
PRInt32 l=nsCRT::strlen(conv);
if((l>3) && ('^' == conv[0]) && ('(' == conv[1]) && (')' == conv[l-1])) // sup
{
short small = aSize * 2 / 3;
::TextSize(small);
GetScriptTextWidth(conv+2, l-3,oWidth);
::TextSize(aSize);
}
else if((l>3) && ('v' == conv[0]) && ('(' == conv[1]) && (')' == conv[l-1])) // sub
{
short small = aSize * 2 / 3;
::TextSize(small);
GetScriptTextWidth(conv+2, l-3,oWidth);
::TextSize(aSize);
}
else if((l>1) && ('0' <= conv[0]) && ( conv[0] <= '9') && ('\/' == conv[1])) // fract
{
short small = aSize * 2 / 3;
short tmpw=0;
::TextSize(small);
GetScriptTextWidth(conv, 1 ,tmpw);
oWidth = tmpw;
::TextSize(aSize);
GetScriptTextWidth(conv+1, 1,tmpw);
oWidth += tmpw;
if(l>2) {
::TextSize(small);
GetScriptTextWidth(conv+2, l-2,tmpw);
oWidth += tmpw;
::TextSize(aSize);
}
} else {
GetScriptTextWidth(conv, l,oWidth);
}
nsAllocator::Free(conv);
return PR_TRUE;
}
@ -364,7 +406,46 @@ PRBool nsUnicodeRenderingToolkit :: TransliterateFallbackDrawChar(
nsAutoString tmp(aCharPt, 1);
char* conv = nsnull;
if(NS_SUCCEEDED(mTrans->Convert(tmp.GetUnicode(), &conv)) && conv) {
DrawScriptText(conv, nsCRT::strlen(conv), x, y, oWidth);
GrafPtr thePort;
::GetPort(&thePort);
short aSize = ::GetPortTextSize(thePort);
PRInt32 l=nsCRT::strlen(conv);
if((l>3) && ('^' == conv[0]) && ('(' == conv[1]) && (')' == conv[l-1])) // sup
{
short small = aSize * 2 / 3;
::TextSize(small);
DrawScriptText(conv+2, l-3, x, y-small/2, oWidth);
::TextSize(aSize);
}
else if((l>3) && ('v' == conv[0]) && ('(' == conv[1]) && (')' == conv[l-1])) // sub
{
short small = aSize * 2 / 3;
::TextSize(small);
DrawScriptText(conv+2, l-3, x, y+small/2, oWidth);
::TextSize(aSize);
}
else if((l>1) && ('0' <= conv[0]) && ( conv[0] <= '9') && ('\/' == conv[1])) // fract
{
short small = aSize * 2 / 3;
short tmpw=0;
::TextSize(small);
DrawScriptText(conv, 1, x, y-small/2, tmpw);
oWidth = tmpw;
::TextSize(aSize);
DrawScriptText(conv+1, 1, x+oWidth, y, tmpw);
oWidth += tmpw;
if(l>2) {
::TextSize(small);
DrawScriptText(conv+2, l-2, x+oWidth, y+small/2, tmpw);
oWidth += tmpw;
::TextSize(aSize);
}
} else {
DrawScriptText(conv, l, x, y, oWidth);
}
nsAllocator::Free(conv);
return PR_TRUE;
}
@ -496,6 +577,166 @@ PRBool nsUnicodeRenderingToolkit :: UPlusFallbackDrawChar(
::TextSize(saveSize);
return (-1 != len);
}
//------------------------------------------------------------------------
/*
# capital mean above
# small mean below
# r - ring below
# R - Ring Above
# d - dot below
# D - Dot Above
# l - line below
# L - Line Above
# c - cedilla
# A - Acute
# x - circumflex below
# X - Circumflex Above
# G - Grave above
# T - Tilde above
# t - tilde below
# B - Breve Above
# b - breve below
# U - Diaeresis Above
# u - diaeresis below
# H - Hook Above
# N - Horn Above
*/
static char *g1E00Dec =
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E00 - U+1E0F
"Ar ar BD bD Bd bd Bl bl CcAccADD dD Dd dd Dl dl "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E10 - U+1E1F
"Dc dc Dx dx ELGeLGELAeLAEx ex Et et EcBecBFD fD "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E20 - U+1E2F
"GL gL HD hD Hd hd HU hU Hc hc Hb hb It it IUAiUA"
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E30 - U+1E3F
"KA kA Kd kd Kl kl Ld ld LdLldLLl ll Lx lx MA mA "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E40 - U+1E4F
"MD mD Md md ND nD Nd nd Nl nl Nx nx OTAoTAOTUoTU"
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E50 - U+1E5F
"OLGoLGOLAoLAPA pA PD pD RD rD Rd rd RdLrdLRl rl "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E60 - U+1E6F
"SD sD Sd sd SADsADSBDsBDSdDsdDTD tD Td td Tl tl "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E70 - U+1E7F
"Tx tx Uu uu Ut ut Ux ux UTAuTAULUuLUVT vT Vd vd "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E80 - U+1E8F
"WG wG WA wA WU wU WD wD Wd wd XD xD XU xU YD Yd "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1E90 - U+1E9F
"ZX zX Zd zd Zl zl Hl tU wR yR aH "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1EA0 - U+1EAF
"Ad ad AH aH AXAaXAAXGaXGAXHaXHAXTaXTAdXadXABAaBA"
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1EB0 - U+1EBF
"ABGaBGABHaBHABTaBTAdBadBEd ed EH eH ET eT EXAeXA"
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1EC0 - U+1ECF
"EXGeXGEXHeXHEXTeXTEdXedXIH iH Id id Od od OH oH "
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1ED0 - U+1EDF
"OXAoXAOXGoXGOXHoXHOXToXTOdXodXOAnoAnOGnoGnOHnoHn"
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1EE0 - U+1EEF
"OHToHTOdTodTUd ud UH uh UAnuAnUGnuGnUHnuHnUTnuTn"
//0 1 2 3 4 5 6 7 8 9 A B C D E F U+1EF0 - U+1EFF
"UdnudnYG yG Yd yd YH yH YT yT "
;
//------------------------------------------------------------------------
static void CCodeToMacRoman(char aIn, char& aOut,short aWidth, short aHeight, short& oXadj, short& oYadj)
{
aOut = ' ';
oXadj = oYadj = 0;
switch(aIn)
{
case 'r' : aOut = '\xfb'; oYadj = aHeight * 5 / 6; break ;// # r - ring below
case 'R' : aOut = '\xfb'; break ;// # R - Ring Above
case 'd' : aOut = '\xfa'; oYadj = aHeight * 5 / 6; break ;// # d - dot below
case 'D' : aOut = '\xfa'; break ;// # D - Dot Above
case 'l' : aOut = '_'; break ;// # l - line below
case 'L' : aOut = '\xf8'; break ;// # L - Line Above
case 'c' : aOut = '\xfc'; break ;// # c - cedilla
case 'A' : aOut = '\xab'; break ;// # A - Acute
case 'x' : aOut = '\xf6'; oYadj= aHeight * 5 / 6; break ;// # x - circumflex below
case 'X' : aOut = '\xf6'; break ;// # X - Circumflex Above
case 'G' : aOut = '`'; break ;// # G - Grave above
case 'T' : aOut = '\xf7'; break ;// # T - Tilde above
case 't' : aOut = '\xf7'; oYadj= aHeight * 5 / 6; break ;// # t - tilde below
case 'B' : aOut = '\xf9'; break ;// # B - Breve Above
case 'b' : aOut = '\xf9'; oYadj= aHeight * 5 / 6; break ;// # b - breve below
case 'U' : aOut = '\xac'; break ;// # U - Diaeresis Above
case 'u' : aOut = '\xac'; oYadj= aHeight * 5 / 6; break ;// # u - diaeresis below
case 'H' : aOut = ','; oYadj= - aHeight * 5 / 6; break ;// # H - Hook Above
case 'n' : aOut = ','; oYadj= - aHeight * 5 / 6; oXadj = aWidth /4; break ;// # N - Horn Above
defalt: NS_ASSERTION(0, "unknown ccode");
break;
}
}
PRBool nsUnicodeRenderingToolkit :: LatinFallbackGetWidth(
const PRUnichar *aCharPt,
short& oWidth)
{
if(0x1E00 == (0xFF00 & *aCharPt))
{
PRInt32 idx = 3 * ( *aCharPt & 0x00FF);
if(' ' != g1E00Dec[idx])
{
GetScriptTextWidth(g1E00Dec+idx, 1, oWidth);
return PR_TRUE;
}
}
return PR_FALSE;
}
//------------------------------------------------------------------------
PRBool nsUnicodeRenderingToolkit :: LatinFallbackDrawChar(
const PRUnichar *aCharPt,
PRInt32 x,
PRInt32 y,
short& oWidth)
{
if(0x1E00 == (0xFF00 & *aCharPt))
{
PRInt32 idx = 3 * ( *aCharPt & 0x00FF);
if(' ' != g1E00Dec[idx])
{
GrafPtr thePort;
::GetPort(&thePort);
short aSize = ::GetPortTextSize(thePort);
short dummy;
short realwidth;
char comb[2];
short xadj;
short yadj;
short yadjB=0;
PRBool baseTooBig = ('A'<= g1E00Dec[idx] ) && (g1E00Dec[idx] <= 'Z' )
|| ('f' == g1E00Dec[idx])|| ('l' == g1E00Dec[idx])|| ('k' == g1E00Dec[idx]);
PRBool firstIsAbove = ('A'<= g1E00Dec[idx+1]) && (g1E00Dec[idx+1] <= 'Z') ;
PRBool secondIsAbove = ('A'<= g1E00Dec[idx+2]) && (g1E00Dec[idx+2] <= 'Z') ;
GetScriptTextWidth(g1E00Dec+idx, 1, oWidth);
if(baseTooBig && (firstIsAbove ||secondIsAbove ))
::TextSize(aSize *3/4);
DrawScriptText(g1E00Dec+idx, 1, x, y, realwidth);
if(baseTooBig && (firstIsAbove ||secondIsAbove ))
::TextSize(aSize);
if(' ' != g1E00Dec[idx+1]) {
CCodeToMacRoman(g1E00Dec[idx+1],comb[0], realwidth, aSize, xadj, yadj);
GetScriptTextWidth(comb, 1, dummy);
DrawScriptText( comb, 1, x + xadj + ( realwidth - dummy ) / 2, y + yadj + yadjB, dummy);
}
if(' ' != g1E00Dec[idx+2]) {
if( firstIsAbove && secondIsAbove)
yadjB = yadjB - aSize / 6;
CCodeToMacRoman(g1E00Dec[idx+2],comb[0], realwidth, aSize, xadj, yadj);
GetScriptTextWidth(comb, 1, dummy);
DrawScriptText( comb, 1, x + xadj+ ( realwidth - dummy ) / 2, y+ yadj + yadjB, dummy);
}
return PR_TRUE;
}
}
return PR_FALSE;
}
//------------------------------------------------------------------------
void nsUnicodeRenderingToolkit :: GetScriptTextWidth(
@ -600,6 +841,10 @@ nsresult nsUnicodeRenderingToolkit :: GetTextSegmentWidth(
fallbackDone = TECFallbackGetWidth(aString, thisWidth, fontNum, scriptFallbackFonts);
#endif
//
// We really don't care too much of performance after this
// This will only be called when we cannot display this character in ANY mac script avaliable
//
#ifndef DISABLE_ATSUI_FALLBACK
// Fallback by using ATSUI
if(! fallbackDone) {
@ -612,14 +857,19 @@ nsresult nsUnicodeRenderingToolkit :: GetTextSegmentWidth(
mGS->mColor );
}
#endif
#ifndef DISABLE_LATIN_FALLBACK
if(! fallbackDone)
fallbackDone = LatinFallbackGetWidth(aString, thisWidth);
#endif
#ifndef DISABLE_PRECOMPOSEHANGUL_FALLBACK
if(! fallbackDone)
fallbackDone = PrecomposeHangulFallbackGetWidth(aString, thisWidth,scriptFallbackFonts[smKorean], fontNum);
#endif
#ifndef DISABLE_TRANSLITERATE_FALLBACK
// Fallback to Transliteration
if(! fallbackDone)
if(! fallbackDone) {
fallbackDone = TransliterateFallbackGetWidth(aString, thisWidth);
}
#endif
#ifndef DISABLE_UPLUS_FALLBACK
// Fallback to UPlus
@ -730,6 +980,10 @@ nsresult nsUnicodeRenderingToolkit :: DrawTextSegment(
// Fallback by try different Script code
fallbackDone = TECFallbackDrawChar(aString, x, y, thisWidth, fontNum, scriptFallbackFonts);
#endif
//
// We really don't care too much of performance after this
// This will only be called when we cannot display this character in ANY mac script avaliable
//
#ifndef DISABLE_ATSUI_FALLBACK
// Fallback by using ATSUI
@ -743,14 +997,19 @@ nsresult nsUnicodeRenderingToolkit :: DrawTextSegment(
mGS->mColor );
}
#endif
#ifndef DISABLE_LATIN_FALLBACK
if(! fallbackDone)
fallbackDone = LatinFallbackDrawChar(aString, x, y, thisWidth);
#endif
#ifndef DISABLE_PRECOMPOSEHANGUL_FALLBACK
if(! fallbackDone)
fallbackDone = PrecomposeHangulFallbackDrawChar(aString, x, y, thisWidth,scriptFallbackFonts[smKorean], fontNum);
#endif
#ifndef DISABLE_TRANSLITERATE_FALLBACK
// Fallback to Transliteration
if(! fallbackDone)
if(! fallbackDone) {
fallbackDone = TransliterateFallbackDrawChar(aString, x, y, thisWidth);
}
#endif
#ifndef DISABLE_UPLUS_FALLBACK
// Fallback to U+xxxx

2
gfx/src/mac/nsUnicodeRenderingToolkit.h
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@ -59,6 +59,8 @@ private:
PRBool QuestionMarkFallbackGetWidth(const PRUnichar *pChar, short& oWidth);
PRBool QuestionMarkFallbackDrawChar(const PRUnichar *pChar, PRInt32 x, PRInt32 y, short& oWidth);
PRBool LatinFallbackGetWidth(const PRUnichar *pChar, short& oWidth);
PRBool LatinFallbackDrawChar(const PRUnichar *pChar, PRInt32 x, PRInt32 y, short& oWidth);
PRBool PrecomposeHangulFallbackGetWidth(const PRUnichar *pChar, short& oWidth,short koreanFont, short origFont);
PRBool PrecomposeHangulFallbackDrawChar(const PRUnichar *pChar, PRInt32 x, PRInt32 y, short& oWidth,short koreanFont, short origFont);
PRBool TransliterateFallbackGetWidth(const PRUnichar *pChar, short& oWidth);