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LibWeb: Implement text-transform: math-auto

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This is a simple mapping of some code-points to others.

I was going to use a ref test for this, but without knowing that the
font contains the code-points (which SerenitySans does not) we'd be
comparing a series of replacement characters to a series of replacement
characters, which doesn't tell you if they're the right code-points
underneath.
This commit is contained in:
Sam Atkins 2023-09-08 16:01:57 +01:00 committed by Sam Atkins
parent ce775ea701
commit 489f9c3151
Notes: sideshowbarker 2024-07-17 05:18:58 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/489f9c3151
Pull-request: https://github.com/SerenityOS/serenity/pull/20985
5 changed files with 268 additions and 0 deletions
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17
Tests/LibWeb/Layout/expected/css-text-transform-math-auto.txt Normal file
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@ -0,0 +1,17 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
BlockContainer <body> at (8,16) content-size 784x17.46875 children: not-inline
BlockContainer <p> at (8,16) content-size 784x17.46875 children: inline
line 0 width: 118.40625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
frag 0 from TextNode start: 0, length: 67, rect: [8,16 118.40625x17.46875]
"𝑊𝑒𝑙𝑙, ℎ𝑒𝑙𝑙𝑜 𝑓𝑟𝑖𝑒𝑛𝑑𝑠!"
TextNode <#text>
BlockContainer <(anonymous)> at (8,49.46875) content-size 784x0 children: inline
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
PaintableWithLines (BlockContainer<BODY>) [8,16 784x17.46875] overflow: [8,16 784x33.46875]
PaintableWithLines (BlockContainer<P>) [8,16 784x17.46875]
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer(anonymous)) [8,49.46875 784x0]

1
Tests/LibWeb/Layout/input/css-text-transform-math-auto.html Normal file
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@ -0,0 +1 @@
<p style="text-transform: math-auto;">Well, hello friends!</p>

1
Userland/Libraries/LibWeb/CSS/Enums.json
View file

@ -384,6 +384,7 @@
"full-size-kana",
"full-width",
"lowercase",
"math-auto",
"none",
"uppercase"
],

1
Userland/Libraries/LibWeb/CSS/Identifiers.json
View file

@ -222,6 +222,7 @@
"mark",
"marktext",
"math",
"math-auto",
"max-content",
"medium",
"menu",

248
Userland/Libraries/LibWeb/Layout/TextNode.cpp
View file

@ -32,6 +32,250 @@ static bool is_all_whitespace(StringView string)
return true;
}
// https://w3c.github.io/mathml-core/#new-text-transform-values
static DeprecatedString apply_math_auto_text_transform(DeprecatedString const& string)
{
// https://w3c.github.io/mathml-core/#italic-mappings
auto map_code_point_to_italic = [](u32 code_point) -> u32 {
switch (code_point) {
case 0x0041:
return 0x1D434;
case 0x0042:
return 0x1D435;
case 0x0043:
return 0x1D436;
case 0x0044:
return 0x1D437;
case 0x0045:
return 0x1D438;
case 0x0046:
return 0x1D439;
case 0x0047:
return 0x1D43A;
case 0x0048:
return 0x1D43B;
case 0x0049:
return 0x1D43C;
case 0x004A:
return 0x1D43D;
case 0x004B:
return 0x1D43E;
case 0x004C:
return 0x1D43F;
case 0x004D:
return 0x1D440;
case 0x004E:
return 0x1D441;
case 0x004F:
return 0x1D442;
case 0x0050:
return 0x1D443;
case 0x0051:
return 0x1D444;
case 0x0052:
return 0x1D445;
case 0x0053:
return 0x1D446;
case 0x0054:
return 0x1D447;
case 0x0055:
return 0x1D448;
case 0x0056:
return 0x1D449;
case 0x0057:
return 0x1D44A;
case 0x0058:
return 0x1D44B;
case 0x0059:
return 0x1D44C;
case 0x005A:
return 0x1D44D;
case 0x0061:
return 0x1D44E;
case 0x0062:
return 0x1D44F;
case 0x0063:
return 0x1D450;
case 0x0064:
return 0x1D451;
case 0x0065:
return 0x1D452;
case 0x0066:
return 0x1D453;
case 0x0067:
return 0x1D454;
case 0x0068:
return 0x0210E;
case 0x0069:
return 0x1D456;
case 0x006A:
return 0x1D457;
case 0x006B:
return 0x1D458;
case 0x006C:
return 0x1D459;
case 0x006D:
return 0x1D45A;
case 0x006E:
return 0x1D45B;
case 0x006F:
return 0x1D45C;
case 0x0070:
return 0x1D45D;
case 0x0071:
return 0x1D45E;
case 0x0072:
return 0x1D45F;
case 0x0073:
return 0x1D460;
case 0x0074:
return 0x1D461;
case 0x0075:
return 0x1D462;
case 0x0076:
return 0x1D463;
case 0x0077:
return 0x1D464;
case 0x0078:
return 0x1D465;
case 0x0079:
return 0x1D466;
case 0x007A:
return 0x1D467;
case 0x0131:
return 0x1D6A4;
case 0x0237:
return 0x1D6A5;
case 0x0391:
return 0x1D6E2;
case 0x0392:
return 0x1D6E3;
case 0x0393:
return 0x1D6E4;
case 0x0394:
return 0x1D6E5;
case 0x0395:
return 0x1D6E6;
case 0x0396:
return 0x1D6E7;
case 0x0397:
return 0x1D6E8;
case 0x0398:
return 0x1D6E9;
case 0x0399:
return 0x1D6EA;
case 0x039A:
return 0x1D6EB;
case 0x039B:
return 0x1D6EC;
case 0x039C:
return 0x1D6ED;
case 0x039D:
return 0x1D6EE;
case 0x039E:
return 0x1D6EF;
case 0x039F:
return 0x1D6F0;
case 0x03A0:
return 0x1D6F1;
case 0x03A1:
return 0x1D6F2;
case 0x03F4:
return 0x1D6F3;
case 0x03A3:
return 0x1D6F4;
case 0x03A4:
return 0x1D6F5;
case 0x03A5:
return 0x1D6F6;
case 0x03A6:
return 0x1D6F7;
case 0x03A7:
return 0x1D6F8;
case 0x03A8:
return 0x1D6F9;
case 0x03A9:
return 0x1D6FA;
case 0x2207:
return 0x1D6FB;
case 0x03B1:
return 0x1D6FC;
case 0x03B2:
return 0x1D6FD;
case 0x03B3:
return 0x1D6FE;
case 0x03B4:
return 0x1D6FF;
case 0x03B5:
return 0x1D700;
case 0x03B6:
return 0x1D701;
case 0x03B7:
return 0x1D702;
case 0x03B8:
return 0x1D703;
case 0x03B9:
return 0x1D704;
case 0x03BA:
return 0x1D705;
case 0x03BB:
return 0x1D706;
case 0x03BC:
return 0x1D707;
case 0x03BD:
return 0x1D708;
case 0x03BE:
return 0x1D709;
case 0x03BF:
return 0x1D70A;
case 0x03C0:
return 0x1D70B;
case 0x03C1:
return 0x1D70C;
case 0x03C2:
return 0x1D70D;
case 0x03C3:
return 0x1D70E;
case 0x03C4:
return 0x1D70F;
case 0x03C5:
return 0x1D710;
case 0x03C6:
return 0x1D711;
case 0x03C7:
return 0x1D712;
case 0x03C8:
return 0x1D713;
case 0x03C9:
return 0x1D714;
case 0x2202:
return 0x1D715;
case 0x03F5:
return 0x1D716;
case 0x03D1:
return 0x1D717;
case 0x03F0:
return 0x1D718;
case 0x03D5:
return 0x1D719;
case 0x03F1:
return 0x1D71A;
case 0x03D6:
return 0x1D71B;
default:
return code_point;
}
};
StringBuilder builder(string.length());
for (auto code_point : Utf8View(string))
builder.append_code_point(map_code_point_to_italic(code_point));
return builder.to_deprecated_string();
}
static ErrorOr<DeprecatedString> apply_text_transform(DeprecatedString const& string, CSS::TextTransform text_transform)
{
switch (text_transform) {
@ -41,12 +285,16 @@ static ErrorOr<DeprecatedString> apply_text_transform(DeprecatedString const& st
return Unicode::to_unicode_lowercase_full(string);
case CSS::TextTransform::None:
return string;
case CSS::TextTransform::MathAuto:
return apply_math_auto_text_transform(string);
case CSS::TextTransform::Capitalize:
case CSS::TextTransform::FullSizeKana:
case CSS::TextTransform::FullWidth:
// FIXME: Implement these!
return string;
}
VERIFY_NOT_REACHED();
}
void TextNode::invalidate_text_for_rendering()