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<!DOCTYPE html>
<meta charset="utf-8">
<title>SVGTextContentElement.getCharNumAtPosition</title>
<link rel="help" href="https://svgwg.org/svg2-draft/text.html#__svg__SVGTextContentElement__getCharNumAtPosition">
<link rel="stylesheet" href="/fonts/ahem.css">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<svg width="800" height="600">
<style>
text {
font: 20px/1 Ahem;
}
</style>
<text><tspan id="htb" x="40" y="100">abc</tspan></text>
<text style="writing-mode:vertical-lr"><tspan id="vlr" x="40" y="120">abc</tspan></text>
<text style="writing-mode:vertical-rl"><tspan id="vrl" x="80" y="120">abc</tspan></text>
<text style="writing-mode:sideways-rl"><tspan id="srl" x="80" y="200">abc</tspan></text>
</svg>
<script>
function newPoint(x, y) {
const p = document.querySelector('svg').createSVGPoint();
p.x = x;
p.y = y;
return p;
}
setup({ explicit_done: true });
document.fonts.ready.then(() => {
test(() => {
const element = document.querySelector('#htb');
assert_equals(element.getNumberOfChars(), 3);
const start = 40;
assert_equals(element.getCharNumAtPosition(newPoint(start - 10, 100)), -1);
assert_equals(element.getCharNumAtPosition(newPoint(start + 10, 100)), 0);
assert_equals(element.getCharNumAtPosition(newPoint(start + 30, 100)), 1);
assert_equals(element.getCharNumAtPosition(newPoint(start + 50, 100)), 2);
assert_equals(element.getCharNumAtPosition(newPoint(start + 70, 100)), -1);
}, 'horizontal-tb');
test(() => {
const element = document.querySelector('#vlr');
assert_equals(element.getNumberOfChars(), 3);
const start = 120;
assert_equals(element.getCharNumAtPosition(newPoint(40, start - 10)), -1);
assert_equals(element.getCharNumAtPosition(newPoint(40, start + 10)), 0);
assert_equals(element.getCharNumAtPosition(newPoint(40, start + 30)), 1);
assert_equals(element.getCharNumAtPosition(newPoint(40, start + 50)), 2);
assert_equals(element.getCharNumAtPosition(newPoint(40, start + 70)), -1);
}, 'vertical-lr');
test(() => {
const element = document.querySelector('#vrl');
assert_equals(element.getNumberOfChars(), 3);
const start = 120;
assert_equals(element.getCharNumAtPosition(newPoint(80, start - 10)), -1);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 10)), 0);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 30)), 1);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 50)), 2);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 70)), -1);
}, 'vertical-rl');
test(() => {
const element = document.querySelector('#srl');
assert_equals(element.getNumberOfChars(), 3);
const start = 200;
assert_equals(element.getCharNumAtPosition(newPoint(80, start - 10)), -1);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 10)), 0);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 30)), 1);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 50)), 2);
assert_equals(element.getCharNumAtPosition(newPoint(80, start + 70)), -1);
}, 'sideways-rl');
done();
});
</script>
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