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css parser

This commit is contained in:
Vadim Lopatin 2015-12-23 17:10:34 +03:00
parent 3d338b86b0
commit a2c6d38970
1 changed files with 104 additions and 7 deletions
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107
src/dlangui/core/css.d
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@ -246,6 +246,8 @@ class CssStyle {
CssTextAlign textAlignLast = CssTextAlign.inherit;
CssTextDecoration textDecoration = CssTextDecoration.inherit;
CssHyphenate hyphenate = CssHyphenate.inherit;
CssLength color;
CssLength backgroundColor;
}
/// skip spaces, move to new location, return true if there are some characters left in source line
@ -373,8 +375,12 @@ struct CssDeclItem {
style.hyphenate = cast(CssHyphenate)value;
break; // hyphenate
case color: break;
case background_color: break;
case color:
style.color = CssLength.unpack(value);
break;
case background_color:
style.backgroundColor = CssLength.unpack(value);
break;
case vertical_align: break;
case font_family: break; // id families like serif, sans-serif
case font_names: break; // string font name like Arial, Courier
@ -441,10 +447,11 @@ class CssDeclaration {
n = parseEnumItem!CssHyphenate(src, -1);
break; // hyphenate
case color:
//n = parseEnumItem!Css(src, -1);
break;
case background_color:
//n = parseEnumItem!Css(src, -1);
CssLength v;
if (parseColor(src, v)) {
n = v.pack();
}
break;
case vertical_align: n = parseEnumItem!CssVerticalAlign(src, -1); break;
case font_family: n = parseEnumItem!CssFontFamily(src, -1); break; // id families like serif, sans-serif
@ -512,6 +519,96 @@ class CssDeclaration {
}
}
private int hexDigit( char c )
{
if ( c >= '0' && c <= '9' )
return c-'0';
if ( c >= 'A' && c <= 'F' )
return c - 'A' + 10;
if ( c >= 'a' && c <= 'f' )
return c - 'a' + 10;
return -1;
}
private int parseStandardColor(string ident) {
switch(ident) {
case "black": return 0x000000;
case "green": return 0x008000;
case "silver": return 0xC0C0C0;
case "lime": return 0x00FF00;
case "gray": return 0x808080;
case "olive": return 0x808000;
case "white": return 0xFFFFFF;
case "yellow": return 0xFFFF00;
case "maroon": return 0x800000;
case "navy": return 0x000080;
case "red": return 0xFF0000;
case "blue": return 0x0000FF;
case "purple": return 0x800080;
case "teal": return 0x008080;
case "fuchsia": return 0xFF00FF;
case "aqua": return 0x00FFFF;
default: return -1;
}
}
private bool parseColor(ref string src, ref CssLength value)
{
value.type = CssValueType.unspecified;
value.value = 0;
skipSpaces(src);
if (src.empty)
return false;
string ident = parseIdent(src);
if (!ident.empty) {
switch(ident) {
case "inherited":
value.type = CssValueType.inherited;
return true;
case "none":
return true;
default:
int v = parseStandardColor(ident);
if (v >= 0) {
value.value = v;
value.type = CssValueType.color;
return true;
}
return false;
}
}
char ch = src[0];
if (ch == '#') {
// #rgb or #rrggbb colors
src = src[1 .. $];
int nDigits = 0;
for ( ; nDigits < src.length && hexDigit(src[nDigits])>=0; nDigits++ ) {
}
if ( nDigits==3 ) {
int r = hexDigit( src[0] );
int g = hexDigit( src[1] );
int b = hexDigit( src[2] );
value.type = CssValueType.color;
value.value = (((r + r*16) * 256) | (g + g*16)) * 256 | (b + b*16);
src = src[3..$];
return true;
} else if ( nDigits==6 ) {
int r = hexDigit( src[0] ) * 16;
r += hexDigit( src[1] );
int g = hexDigit( src[2] ) * 16;
g += hexDigit( src[3] );
int b = hexDigit( src[4] ) * 16;
b += hexDigit( src[5] );
value.type = CssValueType.color;
value.value = ((r * 256) | g) * 256 | b;
src = src[6..$];
return true;
}
}
return false;
}
version(unittest) {
void testCSS() {
CssStyle style = new CssStyle();