50 lines
2.1 KiB
HTML
50 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>CSS Text Level 3: unconditional hanging spaces don't hang before non-overflowing conditionals</title>
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<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
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<link rel="help" href="https://drafts.csswg.org/css-text-3/#hanging">
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<link rel="help" href="https://drafts.csswg.org/css-text-3/#white-space-phase-2">
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<link rel="match" href="/css/reference/ref-filled-green-100px-square.xht">
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<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
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<meta name="assert" content="Hanging can only happen at the end of a line, so unconditionally hanging spaces can only hang before conditionally hanging spaces if the latter would fully overflow">
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<style>
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div {
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font: 25px/1 Ahem;
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width: 4ch;
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height: 4ch;
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background:
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linear-gradient(green, green) 0 1ch / 1ch 1ch no-repeat,
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linear-gradient(green, green) 0 2ch / 2ch 1ch no-repeat,
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linear-gradient(green, green) 1ch 3ch / 3ch 1ch no-repeat,
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red;
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text-align: right;
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white-space: normal;
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color: green;
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}
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.pre-wrap {
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white-space: pre-wrap;
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}
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</style>
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<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
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<div>XXXX　　<span class="pre-wrap"> </span><br>
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XXX　　<span class="pre-wrap"> </span><br>
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XX　　<span class="pre-wrap"> </span><br>
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X　　<span class="pre-wrap"> </span></div>
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<!--
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With white-space: normal, an ideographic space (U+3000) hangs unconditionally,
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as long as every glyph after it until the end of the line also hangs.
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With white-space: pre-wrap, a sequence of spaces that is followed by a forced
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line break (where the end of the block counts as a forced line break) hangs
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conditionally, meaning that the part of it that doesn't fit in the line's
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available width is the only one that hangs. (This is independent to whether it
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would overflow the block's content area.)
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Therefore, unconditional hanging glyphs before such a sequence of conditional
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hanging glyphs can only hang if the conditional sequence overflows the line's
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available width.
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-->
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