| <!DOCTYPE html> |
| <title>CSSOM View - convertRectFromNode()</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: 18px; |
| top: 22px; |
| width: 260px; |
| height: 170px; |
| margin: 8px 12px 16px 20px; |
| border: solid; |
| border-width: 5px 7px 9px 11px; |
| padding: 4px 6px 8px 10px; |
| } |
| |
| #source { |
| position: absolute; |
| left: 60px; |
| top: 48px; |
| width: 96px; |
| height: 52px; |
| margin: 11px 15px 19px 23px; |
| border: solid; |
| border-width: 2px 6px 8px 10px; |
| padding: 4px 8px 10px 12px; |
| transform: translate(10px, 5px) scale(1.2, 0.9) rotate(10deg); |
| transform-origin: right bottom; |
| } |
| </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 size = box_size(source, fromBox); |
| const rect = new DOMRect(0, 0, size.width, size.height); |
| const actual = target.convertRectFromNode(rect, source, {fromBox, toBox}); |
| const expected = expected_quad_in_target_box(source, target, fromBox, |
| toBox); |
| assert_quad_approx_equals(actual, expected, |
| `${fromBox} rect to ${toBox} coordinates`); |
| }, `convertRectFromNode() maps ${fromBox} rect to ${toBox} coordinates`); |
| } |
| } |
| |
| test(() => { |
| const rect = new DOMRect(3, 4, 20, 15); |
| const rectQuad = target.convertRectFromNode(rect, source); |
| const equivalentQuad = target.convertQuadFromNode(quad_from_rect(rect), |
| source); |
| assert_quad_approx_equals(rectQuad, equivalentQuad, |
| "converted rect and equivalent quad"); |
| }, "convertRectFromNode() matches convertQuadFromNode() for the same rectangle"); |
| |
| test(() => { |
| const rect = new DOMRect(5, 6, 21, 17); |
| const targetQuad = target.convertRectFromNode(rect, source); |
| const roundTripped = source.convertQuadFromNode(targetQuad, target); |
| assert_quad_approx_equals(roundTripped, quad_from_rect(rect), |
| "rect after round-trip conversion"); |
| }, "convertRectFromNode() output round-trips as a DOMQuad"); |
| </script> |
