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Auto merge of #10871 - daoshengmu:canvasWithoutContexts, r=jdm

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Fix issue #10755 Canvas without contexts

While canvas without contexts, we just need to return the function without drawing any pixel.

Fixes #10755.
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This commit is contained in:
bors-servo 2016-04-27 16:40:43 -07:00
commit 14de06aef0
4 changed files with 56 additions and 9 deletions
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12
components/layout/display_list_builder.rs
View file

@ -13,7 +13,7 @@
use app_units::{Au, AU_PER_PX};
use azure::azure_hl::Color;
use block::{BlockFlow, BlockStackingContextType};
use canvas_traits::{CanvasMsg, CanvasPixelData, CanvasData, FromLayoutMsg};
use canvas_traits::{CanvasMsg, CanvasData, FromLayoutMsg};
use context::LayoutContext;
use euclid::num::Zero;
use euclid::{Matrix4D, Point2D, Point3D, Rect, SideOffsets2D, Size2D};
@ -34,7 +34,7 @@ use gfx::paint_thread::THREAD_TINT_COLORS;
use gfx::text::glyph::CharIndex;
use gfx_traits::{color, ScrollPolicy};
use inline::{FIRST_FRAGMENT_OF_ELEMENT, InlineFlow, LAST_FRAGMENT_OF_ELEMENT};
use ipc_channel::ipc::{self, IpcSharedMemory};
use ipc_channel::ipc::{self};
use list_item::ListItemFlow;
use model::{self, MaybeAuto, ToGfxMatrix};
use net_traits::image::base::PixelFormat;
@ -1259,13 +1259,7 @@ impl FragmentDisplayListBuilding for Fragment {
FromLayoutMsg::SendData(sender))).unwrap();
receiver.recv().unwrap()
},
None => CanvasData::Pixels(CanvasPixelData {
image_data: IpcSharedMemory::from_byte(0xFFu8,
(computed_width *
computed_height * 4)
as usize),
image_key: None,
}),
None => return,
};
let base = state.create_base_display_item(

24
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -1212,6 +1212,18 @@
"url": "/_mozilla/css/canvas_radial_gradient_a.html"
}
],
"css/canvas_without_context_a.html": [
{
"path": "css/canvas_without_context_a.html",
"references": [
[
"/_mozilla/css/canvas_without_context_ref.html",
"=="
]
],
"url": "/_mozilla/css/canvas_without_context_a.html"
}
],
"css/case-insensitive-font-family.html": [
{
"path": "css/case-insensitive-font-family.html",
@ -7940,6 +7952,18 @@
"url": "/_mozilla/css/canvas_radial_gradient_a.html"
}
],
"css/canvas_without_context_a.html": [
{
"path": "css/canvas_without_context_a.html",
"references": [
[
"/_mozilla/css/canvas_without_context_ref.html",
"=="
]
],
"url": "/_mozilla/css/canvas_without_context_a.html"
}
],
"css/case-insensitive-font-family.html": [
{
"path": "css/case-insensitive-font-family.html",

15
tests/wpt/mozilla/tests/css/canvas_without_context_a.html Normal file
View file

@ -0,0 +1,15 @@
<!doctype html>
<meta charset="utf-8">
<link rel="match" href="canvas_without_context_ref.html">
<style>
div {
background-color: green;
width: 20px;
height: 20px;
}
</style>
</head>
<body>
<div><canvas width="20" height="20"></canvas></div>
</body>
</html>

14
tests/wpt/mozilla/tests/css/canvas_without_context_ref.html Normal file
View file

@ -0,0 +1,14 @@
<html>
<head>
<style>
div {
background-color: green;
width: 20px;
height: 20px;
}
</style>
</head>
<body>
<div></div>
</body>
</html>