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CanvasRenderingContext2D.fill()

この記事内

Syntax
1. Parameters
Examples
1. Using the fill method
  1. HTML
  2. JavaScript
Specifications
Browser compatibility
See also

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The CanvasRenderingContext2D.fill() method of the Canvas 2D API fills the current or given path with the current fill style using the non-zero or even-odd winding rule.

Syntax

void ctx.fill();
void ctx.fill(fillRule);
void ctx.fill(path, fillRule);

Parameters

fillRule

The algorithm by which to determine if a point is inside a path or outside a path.
Possible values:

"nonzero": The non-zero winding rule, which is the default rule.
"evenodd": The even-odd winding rule.

path

A Path2D path to fill.

Examples

Using the `fill` method

This is just a simple code snippet which uses the fill method to fill a path.

HTML

<canvas id="canvas"></canvas>

JavaScript

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
ctx.rect(10, 10, 100, 100);
ctx.fill();

Edit the code below and see your changes update live in the canvas:

Playable code

<canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas>
<div class="playable-buttons">
  <input id="edit" type="button" value="Edit" />
  <input id="reset" type="button" value="Reset" />
</div>
<textarea id="code" class="playable-code">
ctx.rect(10, 10, 100, 100);
ctx.fill();</textarea>

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var textarea = document.getElementById("code");
var reset = document.getElementById("reset");
var edit = document.getElementById("edit");
var code = textarea.value;

function drawCanvas() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  eval(textarea.value);
}

reset.addEventListener("click", function() {
  textarea.value = code;
  drawCanvas();
});

edit.addEventListener("click", function() {
  textarea.focus();
})

textarea.addEventListener("input", drawCanvas);
window.addEventListener("load", drawCanvas);

Specifications

Specification	Status	Comment
WHATWG HTML Living Standard The definition of 'CanvasRenderingContext2D.fill' in that specification.	Living Standard

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)
Path parameter	(Yes)	31 (31)	Not supported	(Yes)	Not supported

Feature	Android	Chrome for Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)
Path parameter	?	?	31.0 (31)	?	?	?

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このページの貢献者: fscholz

最終更新者: fscholz, 2014/11/11 5:59:54