114 lines
3.2 KiB
HTML
114 lines
3.2 KiB
HTML
<!DOCTYPE html>
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<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#fallback">
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<link rel="author" href="mailto:kojii@chromium.org">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/resources/check-layout-th.js"></script>
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<script src="support/test-common.js"></script>
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<style>
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.cb {
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position: relative;
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width: 190px;
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height: 70px;
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background: yellow;
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border-bottom: 1px solid black;
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}
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.spacer {
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width: 1px;
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height: 20px;
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}
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.anchor1 {
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anchor-name: --a1;
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margin-left: 45px;
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width: 100px;
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height: 30px;
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background: blue;
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}
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.target {
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position: absolute;
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position-try-fallbacks: --f1, --f2, --f3, --f4;
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width: 40px;
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height: 15px;
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margin: 5px;
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background: orange;
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/* Position to the right of the anchor. */
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left: anchor(--a1 right);
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top: anchor(--a1 top);
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}
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@position-try --f1 {
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inset: auto;
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/* Position to the left of the anchor. */
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right: anchor(--a1 left);
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top: anchor(--a1 top);
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}
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@position-try --f2 {
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inset: auto;
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/* Position to the bottom of the anchor. */
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left: anchor(--a1 left);
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top: anchor(--a1 bottom);
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}
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@position-try --f3 {
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inset: auto;
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/* Position to the top of the anchor. */
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left: anchor(--a1 left);
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bottom: anchor(--a1 top);
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}
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@position-try --f4 {
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inset: auto;
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/* Position to the left with the narrower width. */
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left: anchor(--a1 right);
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top: anchor(--a1 top);
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width: 35px;
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height: 40px;
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}
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</style>
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<body onload="checkLayoutForAnchorPos('.target')">
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<!-- If the `cb` is wider, the base style fits. -->
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<div class="cb" style="width: 195px">
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<div class="spacer"></div>
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<div class="anchor1"></div>
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<div class="target"
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data-offset-x=150 data-offset-y=25
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data-expected-width=40 data-expected-height=15></div>
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</div>
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<!-- If the `margin-left` is wider, the first `@position-try` fits. -->
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<div class="cb">
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<div class="spacer"></div>
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<div class="anchor1" style="margin-left: 50px"></div>
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<div class="target"
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data-offset-x=5 data-offset-y=25
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data-expected-width=40 data-expected-height=15></div>
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</div>
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<!-- Without a spacer, the 2nd `@position-try` fits. -->
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<div class="cb">
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<div class="anchor1"></div>
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<div class="target"
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data-offset-x=50 data-offset-y=35
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data-expected-width=40 data-expected-height=15></div>
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</div>
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<!-- With two spacers, the 3rd `@position-try` fits. -->
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<div class="cb">
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<div class="spacer"></div>
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<div class="spacer"></div>
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<div class="anchor1"></div>
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<div class="target"
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data-offset-x=50 data-offset-y=20
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data-expected-width=40 data-expected-height=15></div>
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</div>
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<!-- With a spacer, the last `@position-try` fits. -->
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<div class="cb">
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<div class="spacer"></div>
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<div class="anchor1"></div>
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<div class="target"
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data-offset-x=150 data-offset-y=25
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data-expected-width=35 data-expected-height=40></div>
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</div>
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<!-- If the `cb` is narrower, no rules fit. The base style is used. -->
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<div class="cb" style="width: 185px">
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<div class="spacer"></div>
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<div class="anchor1"></div>
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<div class="target"
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data-offset-x=150 data-offset-y=25
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data-expected-width=40 data-expected-height=15></div>
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</div>
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</body>
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