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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/187859">187859</a></dd>
<dt>Author</dt> <dd>carlosgc@webkit.org</dd>
<dt>Date</dt> <dd>2015-08-04 06:26:32 -0700 (Tue, 04 Aug 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/187171">r187171</a> - [WinCairo] SVG path not rendered with all-zero dasharray
https://bugs.webkit.org/show_bug.cgi?id=146997

Patch by Jinyoung Hur &lt;hur.ims@navercorp.com&gt; on 2015-07-22
Reviewed by Martin Robinson.

Source/WebCore:

All-zero dash array should not be passed to cairo_set_dash() as an argument, because it will cause an internal Cairo error.
Rather call cairo_set_dash() with num_dashes=0 to disable dash line.

Tests: fast/canvas/canvas-lineDash.html
       svg/custom/zero-dasharray.html

* platform/graphics/cairo/GraphicsContextCairo.cpp:
(WebCore::GraphicsContext::setLineDash):

LayoutTests:

Canvas 2D context and SVG stroke tests with all-zero dash array are added.

* fast/canvas/canvas-lineDash-expected.txt:
* fast/canvas/script-tests/canvas-lineDash.js:
* svg/custom/zero-dasharray.html: Added
* svg/custom/zero-dasharray-expected.html: Added</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit28LayoutTestsChangeLog">releases/WebKitGTK/webkit-2.8/LayoutTests/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit28LayoutTestsfastcanvascanvaslineDashexpectedtxt">releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/canvas-lineDash-expected.txt</a></li>
<li><a href="#releasesWebKitGTKwebkit28LayoutTestsfastcanvasscripttestscanvaslineDashjs">releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/script-tests/canvas-lineDash.js</a></li>
<li><a href="#releasesWebKitGTKwebkit28SourceWebCoreChangeLog">releases/WebKitGTK/webkit-2.8/Source/WebCore/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit28SourceWebCoreplatformgraphicscairoGraphicsContextCairocpp">releases/WebKitGTK/webkit-2.8/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit28LayoutTestssvgcustomzerodasharrayexpectedhtml">releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray-expected.html</a></li>
<li><a href="#releasesWebKitGTKwebkit28LayoutTestssvgcustomzerodasharrayhtml">releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray.html</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="releasesWebKitGTKwebkit28LayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.8/LayoutTests/ChangeLog (187858 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/LayoutTests/ChangeLog        2015-08-04 13:24:06 UTC (rev 187858)
+++ releases/WebKitGTK/webkit-2.8/LayoutTests/ChangeLog        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2015-07-22  Jinyoung Hur  &lt;hur.ims@navercorp.com&gt;
+
+        [WinCairo] SVG path not rendered with all-zero dasharray
+        https://bugs.webkit.org/show_bug.cgi?id=146997
+
+        Reviewed by Martin Robinson.
+
+        Canvas 2D context and SVG stroke tests with all-zero dash array are added.
+
+        * fast/canvas/canvas-lineDash-expected.txt:
+        * fast/canvas/script-tests/canvas-lineDash.js:
+        * svg/custom/zero-dasharray.html: Added
+        * svg/custom/zero-dasharray-expected.html: Added
+
</ins><span class="cx"> 2015-07-22  Mark Dittmer  &lt;mark.s.dittmer@gmail.com&gt;
</span><span class="cx"> 
</span><span class="cx">         New test: Object.create(window).location will trigger a crash when toJSDOMWindow() returns NULL on an object that have the JS DOM Window in its prototype chain.
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit28LayoutTestsfastcanvascanvaslineDashexpectedtxt"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/canvas-lineDash-expected.txt (187858 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/canvas-lineDash-expected.txt        2015-08-04 13:24:06 UTC (rev 187858)
+++ releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/canvas-lineDash-expected.txt        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -40,6 +40,14 @@
</span><span class="cx"> PASS getPixel(105,40) is [0,255,0,255]
</span><span class="cx"> PASS getPixel(90,35) is [0,0,0,0]
</span><span class="cx"> PASS getPixel(90,25) is [0,255,0,255]
</span><ins>+PASS getPixel(145,10) is [0,255,0,255]
+PASS getPixel(155,10) is [0,255,0,255]
+PASS getPixel(160,25) is [0,255,0,255]
+PASS getPixel(160,35) is [0,255,0,255]
+PASS getPixel(145,40) is [0,255,0,255]
+PASS getPixel(135,40) is [0,255,0,255]
+PASS getPixel(130,25) is [0,255,0,255]
+PASS getPixel(130,15) is [0,255,0,255]
</ins><span class="cx"> PASS successfullyParsed is true
</span><span class="cx"> 
</span><span class="cx"> TEST COMPLETE
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit28LayoutTestsfastcanvasscripttestscanvaslineDashjs"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/script-tests/canvas-lineDash.js (187858 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/script-tests/canvas-lineDash.js        2015-08-04 13:24:06 UTC (rev 187858)
+++ releases/WebKitGTK/webkit-2.8/LayoutTests/fast/canvas/script-tests/canvas-lineDash.js        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -104,3 +104,18 @@
</span><span class="cx"> pixelShouldBe(90, 35, [0, 0, 0, 0]);
</span><span class="cx"> pixelShouldBe(90, 25, [0, 255, 0, 255]);
</span><span class="cx"> 
</span><ins>+// Verify all-zero dash rendering.
+ctx.setLineDash([0, 0]);
+ctx.lineDashOffset = 0;
+ctx.lineWidth = 4; // To make the test immune to plaform anti-aliasing discrepancies.
+ctx.strokeStyle = '#00FF00';
+ctx.strokeRect(130.5, 10.5, 30, 30);
+
+pixelShouldBe(145, 10, [0, 255, 0, 255]);
+pixelShouldBe(155, 10, [0, 255, 0, 255]);
+pixelShouldBe(160, 25, [0, 255, 0, 255]);
+pixelShouldBe(160, 35, [0, 255, 0, 255]);
+pixelShouldBe(145, 40, [0, 255, 0, 255]);
+pixelShouldBe(135, 40, [0, 255, 0, 255]);
+pixelShouldBe(130, 25, [0, 255, 0, 255]);
+pixelShouldBe(130, 15, [0, 255, 0, 255]);
</ins></span></pre></div>
<a id="releasesWebKitGTKwebkit28LayoutTestssvgcustomzerodasharrayexpectedhtml"></a>
<div class="addfile"><h4>Added: releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray-expected.html (0 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray-expected.html                                (rev 0)
+++ releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray-expected.html        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -0,0 +1,8 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+  &lt;body&gt;
+    &lt;svg version=&quot;1.1&quot; baseProfile=&quot;full&quot; xmlns=&quot;http://www.w3.org/2000/svg&quot; width=&quot;100%&quot; height=&quot;100%&quot;&gt;
+        &lt;rect id=&quot;rect&quot; fill=&quot;none&quot; stroke=&quot;green&quot; stroke-width=&quot;10&quot; stroke-dasharray:none width=&quot;100&quot; height=&quot;100&quot;/&gt;
+    &lt;/svg&gt;
+  &lt;/body&gt;
+&lt;/html&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit28LayoutTestssvgcustomzerodasharrayhtml"></a>
<div class="addfile"><h4>Added: releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray.html (0 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray.html                                (rev 0)
+++ releases/WebKitGTK/webkit-2.8/LayoutTests/svg/custom/zero-dasharray.html        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -0,0 +1,8 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+  &lt;body&gt;
+    &lt;svg version=&quot;1.1&quot; baseProfile=&quot;full&quot; xmlns=&quot;http://www.w3.org/2000/svg&quot; width=&quot;100%&quot; height=&quot;100%&quot;&gt;
+        &lt;rect id=&quot;rect&quot; fill=&quot;none&quot; stroke=&quot;green&quot; stroke-width=&quot;10&quot; stroke-dasharray=&quot;0&quot; width=&quot;100&quot; height=&quot;100&quot;/&gt;
+    &lt;/svg&gt;
+  &lt;/body&gt;
+&lt;/html&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit28SourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.8/Source/WebCore/ChangeLog (187858 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/Source/WebCore/ChangeLog        2015-08-04 13:24:06 UTC (rev 187858)
+++ releases/WebKitGTK/webkit-2.8/Source/WebCore/ChangeLog        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -1,3 +1,19 @@
</span><ins>+2015-07-22  Jinyoung Hur  &lt;hur.ims@navercorp.com&gt;
+
+        [WinCairo] SVG path not rendered with all-zero dasharray
+        https://bugs.webkit.org/show_bug.cgi?id=146997
+
+        Reviewed by Martin Robinson.
+
+        All-zero dash array should not be passed to cairo_set_dash() as an argument, because it will cause an internal Cairo error.
+        Rather call cairo_set_dash() with num_dashes=0 to disable dash line.
+
+        Tests: fast/canvas/canvas-lineDash.html
+               svg/custom/zero-dasharray.html
+
+        * platform/graphics/cairo/GraphicsContextCairo.cpp:
+        (WebCore::GraphicsContext::setLineDash):
+
</ins><span class="cx"> 2015-07-22  Mark Dittmer  &lt;mark.s.dittmer@gmail.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Fix toJSDOMWindow() in the case of an object that has the actual JS DOM window in its prototype chain.
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit28SourceWebCoreplatformgraphicscairoGraphicsContextCairocpp"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.8/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp (187858 => 187859)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.8/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp        2015-08-04 13:24:06 UTC (rev 187858)
+++ releases/WebKitGTK/webkit-2.8/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp        2015-08-04 13:26:32 UTC (rev 187859)
</span><span class="lines">@@ -895,9 +895,21 @@
</span><span class="cx">     cairo_set_line_cap(platformContext()-&gt;cr(), cairoCap);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+static inline bool isDashArrayAllZero(const DashArray&amp; dashes)
+{
+    for (auto&amp; dash : dashes) {
+        if (dash)
+            return false;
+    }
+    return true;
+}
+
</ins><span class="cx"> void GraphicsContext::setLineDash(const DashArray&amp; dashes, float dashOffset)
</span><span class="cx"> {
</span><del>-    cairo_set_dash(platformContext()-&gt;cr(), dashes.data(), dashes.size(), dashOffset);
</del><ins>+    if (isDashArrayAllZero(dashes))
+        cairo_set_dash(platformContext()-&gt;cr(), 0, 0, 0);
+    else
+        cairo_set_dash(platformContext()-&gt;cr(), dashes.data(), dashes.size(), dashOffset);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void GraphicsContext::setLineJoin(LineJoin lineJoin)
</span></span></pre>
</div>
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