| <!DOCTYPE html> |
| <title>CSSOM View - convertPointFromNode()</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#the-geometryutils-interface"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/geometry-utils.js"></script> |
| <style> |
| html, body { |
| margin: 0; |
| } |
| |
| #target { |
| position: absolute; |
| left: 20px; |
| top: 25px; |
| width: 260px; |
| height: 180px; |
| margin: 7px 11px 13px 17px; |
| border: solid; |
| border-width: 3px 5px 7px 9px; |
| padding: 2px 4px 6px 8px; |
| } |
| |
| #source { |
| position: absolute; |
| left: 70px; |
| top: 55px; |
| width: 90px; |
| height: 45px; |
| margin: 10px 14px 18px 22px; |
| border: solid; |
| border-width: 1px 3px 5px 7px; |
| padding: 2px 4px 6px 8px; |
| transform: translate(12px, 9px) rotate(12deg) scale(1.15, 0.85); |
| transform-origin: 15px 20px; |
| } |
| </style> |
| <div id="target"> |
| <div id="source"></div> |
| </div> |
| <script> |
| const source = document.getElementById("source"); |
| const target = document.getElementById("target"); |
| const boxes = ["margin", "border", "padding", "content"]; |
| |
| for (const fromBox of boxes) { |
| for (const toBox of boxes) { |
| test(() => { |
| const actual = target.convertPointFromNode( |
| {x: 0, y: 0}, |
| source, |
| {fromBox, toBox} |
| ); |
| const expected = expected_point_in_target_box(source, target, fromBox, |
| toBox, "p1"); |
| assert_point_approx_equals(actual, expected, |
| `${fromBox} origin to ${toBox} origin`); |
| }, `convertPointFromNode() maps ${fromBox} origin to ${toBox} coordinates`); |
| } |
| } |
| |
| test(() => { |
| const point = {x: 10, y: 20}; |
| const targetPoint = target.convertPointFromNode(point, source); |
| const roundTripped = source.convertPointFromNode(targetPoint, target); |
| assert_point_approx_equals(roundTripped, point, |
| "point after round-trip conversion"); |
| }, "convertPointFromNode() round-trips between two elements"); |
| |
| test(() => { |
| const actual = document.convertPointFromNode({x: 0, y: 0}, source); |
| const expected = source.getBoxQuads()[0].p1; |
| assert_point_approx_equals(actual, expected, |
| "source border origin in document coordinates"); |
| }, "Document.convertPointFromNode() converts to viewport coordinates"); |
| </script> |
