Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/layout/inspector/tests/chrome/test_fontVariationsAPI.xhtml b/layout/inspector/tests/chrome/test_fontVariationsAPI.xhtml
new file mode 100644
index 0000000000..959d3ee45e
--- /dev/null
+++ b/layout/inspector/tests/chrome/test_fontVariationsAPI.xhtml
@@ -0,0 +1,196 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<?xml-stylesheet type="text/css" href="test_fontVariationsAPI.css"?>
+<window title="Test for font variation axis API"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="RunTest();">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <script type="application/javascript">
+  <![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+
+// Which platform are we on?
+const kIsLinux = navigator.platform.indexOf("Linux") == 0;
+const kIsMac = navigator.platform.indexOf("Mac") == 0;
+const kIsWin = navigator.platform.indexOf("Win") == 0;
+
+// If it's an older macOS version (pre-Sierra), we don't expect the
+// @font-face examples to work, so just skip them.
+const kIsOldMac = navigator.oscpu.substr(navigator.oscpu.lastIndexOf(".") + 1) < 12;
+
+// We allow for some "fuzz" on axis values, given the conversions between
+// fixed-point and floating-point representations.
+const kEpsilon = 0.001;
+
+
+const LibreFranklinAxes = [
+  { tag: "wght", name: "Weight", minValue: 40, maxValue: 200, defaultValue: 40 },
+];
+
+const GinghamAxes = [
+  { tag: "wght", name: "Weight", minValue: 300, maxValue: 700, defaultValue: 300 },
+  { tag: "wdth", name: "Width",  minValue: 1,   maxValue: 150, defaultValue: 1   },
+];
+
+const SkiaAxes = [
+  { tag: "wght", name: "Weight", minValue: 0.48, maxValue: 3.2, defaultValue: 1.0 },
+  { tag: "wdth", name: "Width",  minValue: 0.62, maxValue: 1.3, defaultValue: 1.0 },
+];
+
+function checkAxes(axes, reference) {
+  is(axes.length, reference.length, "number of variation axes");
+  for (var i = 0; i < Math.min(axes.length, reference.length); ++i) {
+    var v = axes[i];
+    var ref = reference[i];
+    is(v.tag, ref.tag, "axis tag");
+    is(v.name, ref.name, "axis name");
+    isfuzzy(v.minValue, ref.minValue, kEpsilon, "minimum value");
+    isfuzzy(v.maxValue, ref.maxValue, kEpsilon, "maximum value");
+    is(v.defaultValue, ref.defaultValue, "default value");
+  }
+}
+
+// Expected variation instances for each of our test fonts, sorted by name
+const LibreFranklinInstances = [
+  { name: "Black",      values: [ { axis: "wght", value: 200 } ] },
+  { name: "Bold",       values: [ { axis: "wght", value: 154 } ] },
+  { name: "ExtraBold",  values: [ { axis: "wght", value: 178 } ] },
+  { name: "ExtraLight", values: [ { axis: "wght", value: 50  } ] },
+  { name: "Light",      values: [ { axis: "wght", value: 66  } ] },
+  { name: "Medium",     values: [ { axis: "wght", value: 106 } ] },
+  { name: "Regular",    values: [ { axis: "wght", value: 84  } ] },
+  { name: "SemiBold",   values: [ { axis: "wght", value: 130 } ] },
+  { name: "Thin",       values: [ { axis: "wght", value: 40  } ] },
+];
+
+const GinghamInstances = [
+  { name: "Bold",              values: [ { axis: "wght", value: 700 }, { axis: "wdth", value: 100 } ] },
+  { name: "Condensed Bold",    values: [ { axis: "wght", value: 700 }, { axis: "wdth", value: 1   } ] },
+  { name: "Condensed Light",   values: [ { axis: "wght", value: 300 }, { axis: "wdth", value: 1   } ] },
+  { name: "Condensed Regular", values: [ { axis: "wght", value: 400 }, { axis: "wdth", value: 1   } ] },
+  { name: "Light",             values: [ { axis: "wght", value: 300 }, { axis: "wdth", value: 100 } ] },
+  { name: "Regular",           values: [ { axis: "wght", value: 400 }, { axis: "wdth", value: 100 } ] },
+  { name: "Wide Bold",         values: [ { axis: "wght", value: 700 }, { axis: "wdth", value: 150 } ] },
+  { name: "Wide Light",        values: [ { axis: "wght", value: 300 }, { axis: "wdth", value: 150 } ] },
+  { name: "Wide Regular",      values: [ { axis: "wght", value: 400 }, { axis: "wdth", value: 150 } ] },
+];
+
+const SkiaInstances = [
+  { name: "Black",           values: [ { axis: "wght", value: 3.2  }, { axis: "wdth", value: 1    } ] },
+  { name: "Black Condensed", values: [ { axis: "wght", value: 3    }, { axis: "wdth", value: 0.7  } ] },
+  { name: "Black Extended",  values: [ { axis: "wght", value: 3.2  }, { axis: "wdth", value: 1.3  } ] },
+  { name: "Bold",            values: [ { axis: "wght", value: 1.95 }, { axis: "wdth", value: 1    } ] },
+  { name: "Condensed",       values: [ { axis: "wght", value: 1    }, { axis: "wdth", value: 0.62 } ] },
+  { name: "Extended",        values: [ { axis: "wght", value: 1    }, { axis: "wdth", value: 1.3  } ] },
+  { name: "Light",           values: [ { axis: "wght", value: 0.48 }, { axis: "wdth", value: 1    } ] },
+  { name: "Light Condensed", values: [ { axis: "wght", value: 0.48 }, { axis: "wdth", value: 0.7  } ] },
+  { name: "Light Extended",  values: [ { axis: "wght", value: 0.48 }, { axis: "wdth", value: 1.3  } ] },
+  { name: "Regular",         values: [ { axis: "wght", value: 1    }, { axis: "wdth", value: 1    } ] },
+];
+
+function checkInstances(instances, reference) {
+  is(instances.length, reference.length, "number of variation instances");
+  instances.sort(function (a, b) {
+    return a.name.localeCompare(b.name, "en-US");
+  });
+  for (var i = 0; i < Math.min(instances.length, reference.length); ++i) {
+    var ref = reference[i];
+    var inst = instances[i];
+    is(inst.name, ref.name, "instance name");
+    is(inst.values.length, ref.values.length, "number of values");
+    for (var j = 0; j < Math.min(inst.values.length, ref.values.length); ++j) {
+      var v = inst.values[j];
+      is(v.axis, ref.values[j].axis, "axis");
+      isfuzzy(v.value, ref.values[j].value, kEpsilon, "value");
+    }
+  }
+}
+
+function RunTest() {
+  // Ensure we're running with font-variations enabled
+  SpecialPowers.pushPrefEnv(
+    {'set': [['layout.css.font-variations.enabled', true],
+             ['gfx.downloadable_fonts.keep_variation_tables', true],
+             ['gfx.downloadable_fonts.otl_validation', false]]},
+    function() {
+      var rng = document.createRange();
+      var elem, fonts, f;
+
+      // First test element uses Arial (or a substitute), which has no variations
+      elem = document.getElementById("test1");
+      rng.selectNode(elem);
+      fonts = InspectorUtils.getUsedFontFaces(rng);
+      is(fonts.length, 1, "number of fonts");
+      f = fonts[0];
+      is(f.getVariationAxes().length, 0, "no variations");
+      is(f.getVariationInstances().length, 0, "no instances");
+
+      if (!(kIsMac && kIsOldMac)) {
+        // Libre Franklin font should have a single axis: Weight.
+        elem = document.getElementById("test2");
+        elem.style.display = "block";
+        rng.selectNode(elem);
+        fonts = InspectorUtils.getUsedFontFaces(rng);
+        is(fonts.length, 1, "number of fonts");
+        f = fonts[0];
+        is(f.name, "Libre Franklin", "font name");
+        checkAxes(f.getVariationAxes(), LibreFranklinAxes);
+        checkInstances(f.getVariationInstances(), LibreFranklinInstances);
+
+        // Gingham font should have two axes: Weight and Width.
+        elem = document.getElementById("test3");
+        elem.style.display = "block";
+        rng.selectNode(elem);
+        fonts = InspectorUtils.getUsedFontFaces(rng);
+        is(fonts.length, 1, "number of fonts");
+        f = fonts[0];
+        is(f.name, "Gingham Regular", "font name");
+        checkAxes(f.getVariationAxes(), GinghamAxes);
+        checkInstances(f.getVariationInstances(), GinghamInstances);
+      }
+
+      if (kIsMac) {
+        // Only applies on macOS, where the Skia font is present
+        // by default, and has Weight and Width axes.
+        elem = document.getElementById("test4");
+        rng.selectNode(elem);
+        fonts = InspectorUtils.getUsedFontFaces(rng);
+        is(fonts.length, 1, "number of fonts");
+        f = fonts[0];
+        is(f.name, "Skia", "font name");
+        checkAxes(f.getVariationAxes(), SkiaAxes);
+        checkInstances(f.getVariationInstances(), SkiaInstances);
+      }
+
+      SimpleTest.finish();
+    }
+  );
+}
+
+  ]]>
+  </script>
+
+  <!-- html:body contains elements the test will inspect -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1323743"
+     target="_blank">Mozilla Bug 1323743</a>
+
+    <!-- Using a non-variation font -->
+    <div id="test1">Hello world</div>
+
+    <!-- This element uses a variation font loaded with @font-face.
+         display:none used here to ensure loading of the webfont is deferred until
+         after we have set prefs required to preserve the variation tables. -->
+    <div id="test2" style="display:none">Hello world</div>
+
+    <!-- This element also uses a variation font loaded with @font-face. -->
+    <div id="test3" style="display:none">Hello world</div>
+
+    <!-- For macOS only, we also test with the system-installed Skia font -->
+    <div id="test4">Hello world</div>
+  </body>
+
+</window>