laya-coreui-es
Version:
laya核心库、ui库es版本，剔除了媒体、TTF等功能。基于 LayaAir-release_2.12.0 修改
107 lines (106 loc) • 3.62 kB
JavaScript
import { Point } from "../../maths/Point";
import { Rectangle } from "../../maths/Rectangle";
import { HTMLCanvas } from "../../resource/HTMLCanvas";
import { Pool } from "../../utils/Pool";
export class CacheStyle {
constructor() {
this.reset();
}
needBitmapCache() {
return this.cacheForFilters || !!this.mask;
}
needEnableCanvasRender() {
return this.userSetCache != "none" || this.cacheForFilters || !!this.mask;
}
releaseContext() {
if (this.canvas && this.canvas.size) {
Pool.recover("CacheCanvas", this.canvas);
this.canvas.size(0, 0);
try {
this.canvas.width = 0;
this.canvas.height = 0;
}
catch (e) {
}
}
this.canvas = null;
}
createContext() {
if (!this.canvas) {
this.canvas = Pool.getItem("CacheCanvas") || new HTMLCanvas(false);
var tx = this.canvas.context;
if (!tx) {
tx = this.canvas.getContext('2d');
}
}
}
releaseFilterCache() {
var fc = this.filterCache;
if (fc) {
fc.destroy();
fc.recycle();
this.filterCache = null;
}
}
recover() {
if (this === CacheStyle.EMPTY)
return;
Pool.recover("SpriteCache", this.reset());
}
reset() {
this.releaseContext();
this.releaseFilterCache();
this.cacheAs = "none";
this.enableCanvasRender = false;
this.userSetCache = "none";
this.cacheForFilters = false;
this.staticCache = false;
this.reCache = true;
this.mask = null;
this.maskParent = null;
this.filterCache = null;
this.filters = null;
this.hasGlowFilter = false;
if (this.cacheRect)
this.cacheRect.recover();
this.cacheRect = null;
return this;
}
static create() {
return Pool.getItemByClass("SpriteCache", CacheStyle);
}
_calculateCacheRect(sprite, tCacheType, x, y) {
var _cacheStyle = sprite._cacheStyle;
if (!_cacheStyle.cacheRect)
_cacheStyle.cacheRect = Rectangle.create();
var tRec;
if (tCacheType === "bitmap") {
tRec = sprite.getSelfBounds();
tRec.width = tRec.width + CacheStyle.CANVAS_EXTEND_EDGE * 2;
tRec.height = tRec.height + CacheStyle.CANVAS_EXTEND_EDGE * 2;
tRec.x = tRec.x - sprite.pivotX;
tRec.y = tRec.y - sprite.pivotY;
tRec.x = tRec.x - CacheStyle.CANVAS_EXTEND_EDGE;
tRec.y = tRec.y - CacheStyle.CANVAS_EXTEND_EDGE;
tRec.x = Math.floor(tRec.x + x) - x;
tRec.y = Math.floor(tRec.y + y) - y;
tRec.width = Math.floor(tRec.width);
tRec.height = Math.floor(tRec.height);
_cacheStyle.cacheRect.copyFrom(tRec);
}
else {
_cacheStyle.cacheRect.setTo(-sprite._style.pivotX, -sprite._style.pivotY, 1, 1);
}
tRec = _cacheStyle.cacheRect;
if (sprite._style.scrollRect) {
var scrollRect = sprite._style.scrollRect;
tRec.x -= scrollRect.x;
tRec.y -= scrollRect.y;
}
CacheStyle._scaleInfo.setTo(1, 1);
return CacheStyle._scaleInfo;
}
}
CacheStyle.EMPTY = new CacheStyle();
CacheStyle._scaleInfo = new Point();
CacheStyle.CANVAS_EXTEND_EDGE = 16;