/* virtual */
nsresult
nsDOMKeyboardEvent::Which(PRUint32* aWhich)
{
NS_ENSURE_ARG_POINTER(aWhich);
switch (mEvent->message) {
case NS_KEY_UP:
case NS_KEY_DOWN:
return GetKeyCode(aWhich);
case NS_KEY_PRESS:
//Special case for 4xp bug 62878. Try to make value of which
//more closely mirror the values that 4.x gave for RETURN and BACKSPACE
{
PRUint32 keyCode = ((nsKeyEvent*)mEvent)->keyCode;
if (keyCode == NS_VK_RETURN || keyCode == NS_VK_BACK) {
*aWhich = keyCode;
return NS_OK;
}
return GetCharCode(aWhich);
}
break;
default:
*aWhich = 0;
break;
}
return NS_OK;
}
FTexture *FFont::GetChar (int code, int translation, int *const width, bool *redirected) const
{
code = GetCharCode(code, true);
int xmove = SpaceWidth;
if (code >= 0)
{
code -= FirstChar;
xmove = Chars[code].XMove;
}
if (width != nullptr)
{
*width = xmove;
}
if (code < 0) return nullptr;
if (translation == CR_UNTRANSLATED && !forceremap)
{
bool redirect = Chars[code].OriginalPic && Chars[code].OriginalPic != Chars[code].TranslatedPic;
if (redirected) *redirected = redirect;
if (redirect)
{
assert(Chars[code].OriginalPic->UseType == ETextureType::FontChar);
return Chars[code].OriginalPic;
}
}
if (redirected) *redirected = false;
assert(Chars[code].TranslatedPic->UseType == ETextureType::FontChar);
return Chars[code].TranslatedPic;
}
bool FFont::CanPrint(const uint8_t *string) const
{
if (!string) return true;
while (*string)
{
auto chr = GetCharFromString(string);
if (!MixedCase) chr = upperforlower[chr]; // For uppercase-only fonts we shouldn't check lowercase characters.
if (chr == TEXTCOLOR_ESCAPE)
{
// We do not need to check for UTF-8 in here.
if (*string == '[')
{
while (*string != '\0' && *string != ']')
{
++string;
}
}
if (*string != '\0')
{
++string;
}
continue;
}
else if (chr != '\n')
{
int cc = GetCharCode(chr, true);
if (chr != cc && iswalpha(chr) && cc != getAlternative(chr))
{
return false;
}
}
}
return true;
}
int FFont::GetCharWidth (int code) const
{
code = GetCharCode(code, true);
if (code >= 0) return Chars[code - FirstChar].XMove;
return SpaceWidth;
}
int FFont::GetCharCode(int code, bool needpic) const
{
if (code < 0 && code >= -128)
{
// regular chars turn negative when the 8th bit is set.
code &= 255;
}
if (code >= FirstChar && code <= LastChar && (!needpic || Chars[code - FirstChar].TranslatedPic != nullptr))
{
return code;
}
// Use different substitution logic based on the fonts content:
// In a font which has both upper and lower case, prefer unaccented small characters over capital ones.
// In a pure upper-case font, do not check for lower case replacements.
if (!MixedCase)
{
// Try converting lowercase characters to uppercase.
if (myislower(code))
{
code = upperforlower[code];
if (code >= FirstChar && code <= LastChar && (!needpic || Chars[code - FirstChar].TranslatedPic != nullptr))
{
return code;
}
}
// Try stripping accents from accented characters.
int newcode = stripaccent(code);
if (newcode != code)
{
code = newcode;
if (code >= FirstChar && code <= LastChar && (!needpic || Chars[code - FirstChar].TranslatedPic != nullptr))
{
return code;
}
}
}
else
{
int originalcode = code;
int newcode;
// Try stripping accents from accented characters. This may repeat to allow multi-step fallbacks.
while ((newcode = stripaccent(code)) != code)
{
code = newcode;
if (code >= FirstChar && code <= LastChar && (!needpic || Chars[code - FirstChar].TranslatedPic != nullptr))
{
return code;
}
}
code = originalcode;
if (myislower(code))
{
int upper = upperforlower[code];
// Stripping accents did not help - now try uppercase for lowercase
if (upper != code) return GetCharCode(upper, needpic);
}
// Same for the uppercase character. Since we restart at the accented version this must go through the entire thing again.
while ((newcode = stripaccent(code)) != code)
{
code = newcode;
if (code >= FirstChar && code <= LastChar && (!needpic || Chars[code - FirstChar].TranslatedPic != nullptr))
{
return code;
}
}
}
return -1;
}
