-
Notifications
You must be signed in to change notification settings - Fork 491
/
CanvasBuffer.js
86 lines (77 loc) · 1.97 KB
/
CanvasBuffer.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
* Creates a Canvas element of the given size.
*
* @class PIXI.CanvasBuffer
* @constructor
* @param width {Number} the width for the newly created canvas
* @param height {Number} the height for the newly created canvas
*/
PIXI.CanvasBuffer = function (width, height)
{
/**
* The width of the Canvas in pixels.
*
* @property width
* @type Number
*/
this.width = width;
/**
* The height of the Canvas in pixels.
*
* @property height
* @type Number
*/
this.height = height;
/**
* The Canvas object that belongs to this CanvasBuffer.
*
* @property canvas
* @type HTMLCanvasElement
*/
this.canvas = Phaser.CanvasPool.create(this, this.width, this.height);
/**
* A CanvasRenderingContext2D object representing a two-dimensional rendering context.
*
* @property context
* @type CanvasRenderingContext2D
*/
this.context = this.canvas.getContext('2d');
this.canvas.width = width;
this.canvas.height = height;
};
PIXI.CanvasBuffer.prototype.constructor = PIXI.CanvasBuffer;
/**
* Clears the canvas that was created by the CanvasBuffer class.
*
* @method PIXI.CanvasBuffer#clear
* @private
*/
PIXI.CanvasBuffer.prototype.clear = function ()
{
this.context.setTransform(1, 0, 0, 1, 0, 0);
this.context.clearRect(0,0, this.width, this.height);
};
/**
* Resizes the canvas to the specified width and height.
*
* @method PIXI.CanvasBuffer#resize
* @param width {Number} the new width of the canvas
* @param height {Number} the new height of the canvas
*/
PIXI.CanvasBuffer.prototype.resize = function (width, height)
{
this.width = this.canvas.width = width;
this.height = this.canvas.height = height;
};
/**
* Frees the canvas up for use again.
*
* @method PIXI.CanvasBuffer#destroy
*/
PIXI.CanvasBuffer.prototype.destroy = function ()
{
Phaser.CanvasPool.remove(this);
};