chore(): rm fabric.filterBackend => getFilterBackend

[ShaMan123]

prepare for dropping fabric NS

Motivation

Prepare for dropping fabric namespace

Description

The ref fabric.filterBakend is gone, I wonder if the dev needs to set the backend for any reason because it is now impossible.
getFilterBackend is a lazy initializer.

Changes

Gist

In Action

[ShaMan123]

should we use instanceof WebGL?

[github-actions]

Build Stats

file / KB (diff)	bundled	minified
fabric	948.365 (+0.164)	305.565 (-0.012)

[github-actions]

Coverage after merging chore-filterbackend into master will be

82.89%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
HEADER.js	54%	48.15%	0%	63.64%	12, 14, 14, 14, 14, 14, 16–17, 21, 21–22, 22, 22, 24, 24, 26, 28, 30–31, 77, 77, 77
src
cache.ts	97.06%	90%	100%	100%	56
config.ts	77.27%	66.67%	66.67%	84.62%	130, 138–140, 151–153
constants.ts	100%	100%	100%	100%
intersection.class.ts	100%	100%	100%	100%
pattern.class.ts	92.31%	85.71%	100%	96.43%	120, 126, 137, 146, 98
point.class.ts	100%	100%	100%	100%
shadow.class.ts	98.51%	96%	100%	100%	157
src/brushes
base_brush.class.ts	100%	100%	100%	100%
circle_brush.class.ts	1.52%	0%	0%	2%	101, 103–105, 114, 114, 114, 116, 118, 120–122, 124–127, 135, 142, 144, 24, 29–30, 38–42, 46–50, 57–60, 68–72, 74, 82, 82, 82, 82, 82–83, 85, 85, 85–88, 90, 98–99
pattern_brush.class.ts	97.14%	87.50%	100%	100%	22
pencil_brush.class.ts	91.91%	85.42%	100%	93.64%	123–124, 153, 153–155, 277, 281, 286–287, 69–70, 85–86
spray_brush.class.ts	1.16%	0%	0%	1.56%	100–102, 104–105, 113, 113, 113, 113, 113–114, 116–117, 124–125, 127, 129–133, 142, 146–147, 147, 155, 155, 155–158, 160–163, 167–168, 170, 172–175, 178, 185–186, 188, 190–191, 193, 200–201, 203–204, 207, 207, 214, 214, 218, 23–24, 26–28, 28, 28–30, 34, 43, 50, 57, 64, 71, 78, 90–92
src/canvas
canvas.class.ts	92.52%	88.15%	94.12%	95.45%	1150, 1150–1151, 1154, 1174, 1174, 1236, 1272–1273, 1292–1293, 1301–1302, 1323, 1331, 1444–1445, 1447–1448, 1468–1469, 1632–1633, 1637, 509, 576–577, 582, 592, 721–722, 724–725, 725, 725, 771–772, 833–834, 837, 839, 884–886, 916, 921–922, 951–952
canvas_events.ts	78.10%	75%	82.81%	79.52%	1003–1004, 1004, 1004–1006, 1008–1009, 1009, 1009, 1011, 1019, 1019, 1019–1021, 1021, 1021, 1027–1028, 1036–1037, 1037, 1037–1038, 1043, 1045, 1075–1077, 1080–1081, 1085–1086, 1184, 1204–1206, 1209–1210, 1282, 1369, 1402, 145, 1496–1497, 1503, 1507–1508, 1524, 1546, 1593, 1598, 1637, 170, 318–319, 319, 319–320, 320, 323–327, 332, 334, 346–348, 351, 368, 368, 368–369, 369, 369–370, 378, 383–384, 384, 384–385, 387, 396, 402–403, 403, 403, 439, 443, 443, 443, 443, 443–444, 446, 521, 523, 523, 523–525, 545, 547, 547, 547–548, 548, 548, 551, 551, 551–552, 555, 564–565, 567–568, 570, 570–571, 573–574, 586–587, 587, 587–588, 590–594, 600, 607, 647, 647, 647, 649, 651–655, 661, 667, 667, 667–668, 670, 673, 678, 691, 718, 774–775, 775, 775–776, 778, 781–782, 782, 782–783, 785–786, 789, 789–791, 794–795, 805, 887, 901, 908, 929, 961, 982–983, 989
canvas_gestures.mixin.ts	9.21%	5.56%	7.14%	11.36%	101, 114, 127, 139, 148, 157–161, 170, 172, 172, 172–173, 175–176, 189, 198, 207, 211, 30, 30, 30–31, 31, 31, 31, 36, 39–40, 40, 40–41, 47, 50, 58, 58, 58, 58, 58–59, 62–64, 66–67, 69, 71, 71, 71–73, 76, 78, 88
static_canvas.class.ts	94.57%	88.89%	97.92%	97.13%	1130–1131, 1131, 1131–1132, 1252, 1262, 1316–1317, 1320, 1355–1356, 1434, 1443, 1448, 1497–1498, 1726, 1726–1727, 1777, 1780, 1783, 1783, 1783, 1786, 1789, 1789, 1789, 309, 345, 358, 414–415, 417–418, 427, 431–432, 434–435, 890
src/color
color.class.ts	92.16%	86.49%	100%	94.29%	330–331, 335–336, 339–340, 58, 88–89, 89, 91, 91, 91–92, 94–95
color_map.ts	100%	100%	100%	100%
constants.ts	100%	100%	100%	100%
index.ts	100%	100%	100%	100%
util.ts	100%	100%	100%	100%
src/controls
actions.ts	100%	100%	100%	100%
changeWidth.ts	100%	100%	100%	100%
control.class.ts	93.98%	88.89%	90.91%	97.78%	236, 320, 320, 355
controls.render.ts	81.63%	78%	100%	84.78%	106, 111, 121, 121, 45, 50, 61, 61, 65–72, 81–82
default_controls.ts	86.67%	66.67%	100%	100%	125, 132
drag.ts	100%	100%	100%	100%
rotate.ts	20%	12.50%	50%	22.22%	45, 51, 51, 51–52, 55–57, 59, 59, 59, 59, 59–61, 61, 61–63, 65, 65, 65–67, 67, 67–68, 73, 73, 73–74, 76, 78, 80–81
scale.ts	93.41%	92.68%	100%	93.59%	129–130, 132–134, 148–149, 181–183, 42
scaleSkew.ts	81.25%	64.29%	100%	92.31%	27, 29, 29, 29, 31, 33
skew.ts	91.03%	79.31%	100%	97.67%	130&ndash

[asturur]

why do we want strict option here?

[ShaMan123]

Image#removeTexture: we don't want it to create the backend, only to probe it

[asturur]

ok so is the issue that initElement calls removeTexture? and that we don't want to strictly couple Image with having a filter Backend?

[ShaMan123]

Seems correct

[asturur]

Merging this and coming back with

• setFilterBackend ( when you want to swap imperatively from one to other )
• eventually getFilterBackend and getOrInitFilterBackend insted of strict because i really don't like strict = true
  (cant see the strictly get it or not strictly get it meaning )

[ShaMan123]

cant see the strictly get it or not strictly get it meaning

strict in terms of existence
But whatever. It is a matter of taste.

[ShaMan123]

Maybe it is only a naming issue.