import {
uid, getUrlFileExtension, decomposeDataUri, getSvgSize,
getResolutionOfUrl, BaseTextureCache, TextureCache,
} from '../utils';
import ImageResource from './resources/ImageResource';
import BufferResource from './resources/BufferResource';
import CanvasResource from './resources/CanvasResource';
import SVGResource from './resources/SVGResource';
import settings from '../settings';
import EventEmitter from 'eventemitter3';
import bitTwiddle from 'bit-twiddle';
export default class BaseTexture extends EventEmitter
{
constructor(width, height, format, type, resolution)
{
super();
this.uid = uid();
this.touched = 0;
/**
* The width of texture
*
* @member {Number}
*/
this.width = width || -1;
/**
* The height of texture
*
* @member {Number}
*/
this.height = height || -1;
/**
* The resolution / device pixel ratio of the texture
*
* @member {number}
* @default 1
*/
this.resolution = resolution || settings.RESOLUTION;
/**
* Whether or not the texture is a power of two, try to use power of two textures as much
* as you can
*
* @private
* @member {boolean}
*/
this.isPowerOfTwo = false;
/**
* If mipmapping was used for this texture, enable and disable with enableMipmap()
*
* @member {Boolean}
*/
this.mipmap = false;//settings.MIPMAP_TEXTURES;
/**
* Set to true to enable pre-multiplied alpha
*
* @member {Boolean}
*/
this.premultiplyAlpha = true;
/**
* [wrapMode description]
* @type {[type]}
*/
this.wrapMode = settings.WRAP_MODE;
/**
* The scale mode to apply when scaling this texture
*
* @member {number}
* @default PIXI.settings.SCALE_MODE
* @see PIXI.SCALE_MODES
*/
this.scaleMode = settings.SCALE_MODE;
/**
* The pixel format of the texture. defaults to gl.RGBA
*
* @member {Number}
*/
this.format = format || 6408//gl.RGBA;
this.type = type || 5121; //UNSIGNED_BYTE
this.target = 3553; // gl.TEXTURE_2D
this._glTextures = {};
this._new = true;
this.resource = null;
this.dirtyId = 0;
this.valid = false;
this.validate();
}
setResource(resource)
{
this.resource = resource;
this.resource.load.then((resource) => {
if(this.resource === resource)
{
if(resource.width !== -1 && resource.hight !== -1)
{
this.width = resource.width / this.resolution;
this.height = resource.height / this.resolution;
}
this.validate();
if(this.valid)
{
this.isPowerOfTwo = bitTwiddle.isPow2(this.realWidth) && bitTwiddle.isPow2(this.realHeight);
// we have not swapped half way!
this.dirtyId++;
this.emit('loaded', this);
}
}
})
}
resize(width, height)
{
this.width = width;
this.height = height;
this.dirtyId++;
}
validate()
{
let valid = true;
if(this.width === -1 || this.height === -1)
{
valid = false;
}
this.valid = valid;
}
/**
* Helper function that creates a base texture from the given image url.
* If the image is not in the base texture cache it will be created and loaded.
*
* @static
* @param {string} imageUrl - The image url of the texture
* @param {boolean} [crossorigin=(auto)] - Should use anonymous CORS? Defaults to true if the URL is not a data-URI.
* @param {number} [scaleMode=PIXI.settings.SCALE_MODE] - See {@link PIXI.SCALE_MODES} for possible values
* @return {PIXI.BaseTexture} The new base texture.
*/
static fromImage(imageUrl, crossorigin, scaleMode)
{
let baseTexture = BaseTextureCache[imageUrl];
if (!baseTexture)
{
// new Image() breaks tex loading in some versions of Chrome.
// See https://code.google.com/p/chromium/issues/detail?id=238071
const resource = ImageResource.from(imageUrl, crossorigin);// document.createElement('img');
baseTexture = new BaseTexture();//image, scaleMode);
baseTexture.scaleMode = scaleMode || baseTexture.scaleMode;
baseTexture.resolution = getResolutionOfUrl(imageUrl);
baseTexture.setResource(resource);
BaseTextureCache[imageUrl] = baseTexture;
}
return baseTexture;
}
/**
* Helper function that creates a base texture from the given canvas element.
*
* @static
* @param {HTMLCanvasElement} canvas - The canvas element source of the texture
* @param {number} scaleMode - See {@link PIXI.SCALE_MODES} for possible values
* @return {PIXI.BaseTexture} The new base texture.
*/
static fromCanvas(canvas, scaleMode)
{
if (!canvas._pixiId)
{
canvas._pixiId = `canvas_${uid()}`;
}
let baseTexture = BaseTextureCache[canvas._pixiId];
if (!baseTexture)
{
const resource = CanvasResource.from(canvas);// document.createElement('img');
baseTexture = new BaseTexture();
baseTexture.scaleMode = scaleMode || baseTexture.scaleMode;
baseTexture.setResource(resource);
BaseTextureCache[canvas._pixiId] = baseTexture;
}
return baseTexture;
}
/**
* Helper function that creates a base texture from the given canvas element.
*
* @static
* @param {HTMLCanvasElement} canvas - The canvas element source of the texture
* @param {number} scaleMode - See {@link PIXI.SCALE_MODES} for possible values
* @return {PIXI.BaseTexture} The new base texture.
*/
static fromSVG(url, scale, scaleMode)
{
let baseTexture = BaseTextureCache[url];
if (!baseTexture)
{
const resource = SVGResource.from(url);// document.createElement('img');
baseTexture = new BaseTexture();
baseTexture.scaleMode = scaleMode || baseTexture.scaleMode;
baseTexture.setResource(resource);
BaseTextureCache[url] = baseTexture;
}
return baseTexture;
}
get realWidth()
{
return this.width * this.resolution;
}
get realHeight()
{
return this.height * this.resolution;
}
/**
* Helper function that creates a base texture based on the source you provide.
* The source can be - image url, image element, canvas element.
*
* @static
* @param {string|HTMLImageElement|HTMLCanvasElement} source - The source to create base texture from.
* @param {number} [scaleMode=PIXI.settings.SCALE_MODE] - See {@link PIXI.SCALE_MODES} for possible values
* @param {number} [sourceScale=(auto)] - Scale for the original image, used with Svg images.
* @return {PIXI.BaseTexture} The new base texture.
*/
static fromNEW(url)
{
var texture = new Texture();
var image = new Image();
image.src = url;
texture.setResource(new ImageResource(image));
return texture;
}
/**
* Helper function that creates a base texture based on the source you provide.
* The source can be - image url, image element, canvas element.
*
* @static
* @param {string|HTMLImageElement|HTMLCanvasElement} source - The source to create base texture from.
* @param {number} [scaleMode=PIXI.settings.SCALE_MODE] - See {@link PIXI.SCALE_MODES} for possible values
* @param {number} [sourceScale=(auto)] - Scale for the original image, used with Svg images.
* @return {PIXI.BaseTexture} The new base texture.
*/
static from(source, scaleMode, sourceScale)
{
if (typeof source === 'string')
{
return BaseTexture.fromImage(source, undefined, scaleMode, sourceScale);
}
else if (source instanceof HTMLImageElement)
{
const imageUrl = source.src;
let baseTexture = BaseTextureCache[imageUrl];
if (!baseTexture)
{
baseTexture = new BaseTexture(source, scaleMode);
baseTexture.imageUrl = imageUrl;
if (sourceScale)
{
baseTexture.sourceScale = sourceScale;
}
// if there is an @2x at the end of the url we are going to assume its a highres image
baseTexture.resolution = getResolutionOfUrl(imageUrl);
BaseTextureCache[imageUrl] = baseTexture;
}
return baseTexture;
}
else if (source instanceof HTMLCanvasElement)
{
return BaseTexture.fromCanvas(source, scaleMode);
}
// lets assume its a base texture!
return source;
}
static fromFloat32Array(width, height, float32Array)
{
var texture = new Texture(width, height, 6408, 5126);
float32Array = float32Array || new Float32Array(width*height*4);
texture.setResource(new BufferResource(float32Array));
return texture;
}
static fromUint8Array(width, height, uint8Array)
{
var texture = new Texture(width, height, 6408, 5121);
uint8Array = uint8Array || new Uint8Array(width*height*4);
texture.setResource(new BufferResource(uint8Array));
return texture;
}
}
