Attachment 349495 Details for Bug 189532 – Patch

[patch] Patch

bug-189532-20180911171325.patch (text/plain), 4.40 KB, created by Megan Gardner on 2018-09-11 17:13:26 PDT

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Creator: Megan Gardner

Created: 2018-09-11 17:13:26 PDT

Size: 4.40 KB

patch

obsolete

>Subversion Revision: 235877
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index cc605918098d1e4147496792f106cad87316e204..0a329f732ee3eb772b31cac0b47d61dd636e5219 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,19 @@
>+2018-09-11  Megan Gardner  <megan_gardner@apple.com>
>+
>+        Fix color stop blending in conic gradients for stops past 1
>+        https://bugs.webkit.org/show_bug.cgi?id=189532
>+        <rdar://problem/44158221>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Test: fast/gradients/conic-repeating-last-stop.html
>+
>+        Calculation was wrong, fixed it, and wrote a test that failed
>+        without the change, and passes with it.
>+
>+        * css/CSSGradientValue.cpp:
>+        (WebCore::ConicGradientAdapter::normalizeStopsAndEndpointsOutsideRange):
>+
> 2018-09-10  Megan Gardner  <megan_gardner@apple.com>
> 
>         Correctly interpret from angle for conic gradients
>diff --git a/Source/WebCore/css/CSSGradientValue.cpp b/Source/WebCore/css/CSSGradientValue.cpp
>index 700c63daadcac6a0193411f2ba2b65975e4515bf..898b1e2e74ad7ec217775edc6affdbdd62db52db 100644
>--- a/Source/WebCore/css/CSSGradientValue.cpp
>+++ b/Source/WebCore/css/CSSGradientValue.cpp
>@@ -280,7 +280,7 @@ public:
>                 float prevOffset = stops[lastOneOrLessIndex].offset;
>                 float nextOffset = stops[lastOneOrLessIndex + 1].offset;
>                 
>-                float interStopProportion = 1 / (nextOffset - prevOffset);
>+                float interStopProportion = (1 - prevOffset) / (nextOffset - prevOffset);
>                 // FIXME: when we interpolate gradients using premultiplied colors, this should do premultiplication.
>                 Color blendedColor = blend(stops[lastOneOrLessIndex].color, stops[lastOneOrLessIndex + 1].color, interStopProportion);
>                 
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index 09edb95156b4718b3a8fa1a1366b46ddce46410a..9dc9450c370898b8b9e0729afed7ef897c150d4c 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-09-11  Megan Gardner  <megan_gardner@apple.com>
>+
>+        Fix color stop blending in conic gradients for stops past 1
>+        https://bugs.webkit.org/show_bug.cgi?id=189532
>+        <rdar://problem/44158221>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Tests that last stop in the gradient is correct.
>+
>+        * fast/gradients/conic-repeating-last-stop-expected.html: Added.
>+        * fast/gradients/conic-repeating-last-stop.html: Added.
>+
> 2018-09-10  Truitt Savell  <tsavell@apple.com>
> 
>         Rebaseline test after https://trac.webkit.org/changeset/235866/webkit.
>diff --git a/LayoutTests/fast/gradients/conic-repeating-last-stop-expected.html b/LayoutTests/fast/gradients/conic-repeating-last-stop-expected.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..2e8a53cacce4d1f0615975a9ad19efa64b38df90
>--- /dev/null
>+++ b/LayoutTests/fast/gradients/conic-repeating-last-stop-expected.html
>@@ -0,0 +1,18 @@
>+<html>
>+<head>
>+    <style>
>+        div {
>+            width: 200px;
>+            height: 200px;
>+        }
>+
>+        #box1 {
>+            background-color: yellow;
>+        }
>+        
>+    </style>
>+</head>
>+<body>
>+    <div id="box1"></div>
>+</body>
>+</html>
>diff --git a/LayoutTests/fast/gradients/conic-repeating-last-stop.html b/LayoutTests/fast/gradients/conic-repeating-last-stop.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..d766d24fcbd3e9e87252c83ee8495d9a790f716f
>--- /dev/null
>+++ b/LayoutTests/fast/gradients/conic-repeating-last-stop.html
>@@ -0,0 +1,42 @@
>+<html>
>+<head>
>+<style>
>+svg {
>+    width: 800px;
>+    display: none;
>+}
>+
>+.container {
>+    width: 200px;
>+    height: 200px;
>+    overflow: hidden;
>+}
>+
>+#test {
>+    width: 200px;
>+    height: 200px;
>+    background-image: repeating-conic-gradient(gold, orange 20deg);
>+    filter: url(#posterize);
>+    transform: scale(20);
>+    transform-origin: 45% top;
>+}
>+</style>
>+</head>
>+
>+<body>
>+<svg viewBox="0 0 700 100">
>+<defs>
>+    <filter id="posterize" filterUnits="objectBoundingBox" primitiveUnits="objectBoundingBox">
>+        <feComponentTransfer>
>+            <feFuncR type="discrete" tableValues="0 1"/>
>+            <feFuncG type="discrete" tableValues="0 1"/>
>+            <feFuncB type="discrete" tableValues="0 1"/>
>+        </feComponentTransfer>
>+    </filter>
>+</defs>
>+</svg>
>+
>+<div class="container">
>+    <div id="test"></div>
>+</div>
>+</html>

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