LayoutTests/fast/canvas/alpha.js - Issue 14298018: This CL implements the first draft of Canvas 2D Context Attributes, aka getContext('2d', { alpha: f…

Keyboard Shortcuts

	File
u :	up to issue
j / k :	jump to file after / before current file
J / K :	jump to next file with a comment after / before current file
	Side-by-side diff
i :	toggle intra-line diffs
e :	expand all comments
c :	collapse all comments
s :	toggle showing all comments
n / p :	next / previous diff chunk or comment
N / P :	next / previous comment
<Up> / <Down> :	next / previous line

	Issue
u :	up to list of issues
j / k :	jump to patch after / before current patch
o / <Enter> :	open current patch in side-by-side view
i :	open current patch in unified diff view

	Issue List
j / k :	jump to issue after / before current issue
o / <Enter> :	open current issue

Unified Diff: LayoutTests/fast/canvas/alpha.js

Issue 14298018: This CL implements the first draft of Canvas 2D Context Attributes, aka getContext('2d', { alpha: f… (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: IDL cleanup Created 7 years, 8 months ago

Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.

Jump to:

View side-by-side diff with in-line comments

Download patch

« no previous file with comments | « LayoutTests/fast/canvas/alpha.html ('k') | LayoutTests/fast/canvas/alpha-expected.txt » ('j') | Source/bindings/v8/custom/V8HTMLCanvasElementCustom.cpp » ('J')
Expand Comments ('e') | Collapse Comments ('c') | Hide Comments ('s')

Index: LayoutTests/fast/canvas/alpha.js

diff --git a/LayoutTests/fast/canvas/alpha.js b/LayoutTests/fast/canvas/alpha.js

new file mode 100644

index 0000000000000000000000000000000000000000..89fe8b79dfd263fdaf348adf02b93eebabc50323

--- /dev/null

+++ b/LayoutTests/fast/canvas/alpha.js

@@ -0,0 +1,18 @@

+description("Series of tests for canvas alpha");

+var canvas1 = document.getElementById("canvas1");

+var canvas2 = document.getElementById("canvas2");

+var ctx1 = canvas1.getContext("2d");

+var ctx2 = canvas2.getContext("2d", { alpha: false } );

+var imgData1 = ctx1.getImageData(0, 0, 1, 1);

+shouldBe("ctx1.getContextAttributes().alpha", "true");

+shouldBe("imgData1.data[0]", "0");

+shouldBe("imgData1.data[1]", "0");

+shouldBe("imgData1.data[2]", "0");

+shouldBe("imgData1.data[3]", "0");

+var imgData2 = ctx2.getImageData(0, 0, 1, 1);

+shouldBe("ctx2.getContextAttributes().alpha", "false");

+shouldBe("imgData2.data[0]", "0");

+shouldBe("imgData2.data[1]", "0");

+shouldBe("imgData2.data[2]", "0");

+shouldBe("imgData2.data[3]", "255");