Mercurial > code > home > repos > light9
annotate web/fade/Light9Fader.ts @ 2450:a4052905ca7d default tip
notes about how rdfdb syncs, or should sync
| author | drewp@bigasterisk.com |
|---|---|
| date | Mon, 03 Jun 2024 23:01:54 -0700 |
| parents | 9a4bc2ea264e |
| children |
| rev | line source |
|---|---|
| 2320 | 1 import debug from "debug"; |
| 2 import { css, html, LitElement, PropertyValueMap } from "lit"; | |
| 3 import { customElement, property, query } from "lit/decorators.js"; | |
| 4 | |
|
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reorg tools into light9/web/ and a single vite instance
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5 import { clamp } from "../floating_color_picker"; |
| 2320 | 6 const log = debug("fade"); |
| 7 | |
| 8 class Drag { | |
| 9 constructor(public startDragPxY: number, public startDragValue: number) {} | |
| 10 } | |
| 11 | |
| 12 @customElement("light9-fader") | |
| 13 export class Light9Fader extends LitElement { | |
| 14 static styles = [ | |
| 15 css` | |
| 16 :host { | |
| 17 display: inline-block; | |
| 18 border: 2px gray inset; | |
| 19 background: #000; | |
| 2355 | 20 height: 80px; |
| 2320 | 21 } |
| 22 #handle { | |
| 23 background: gray; | |
| 2400 | 24 border: 3px outset #838499; |
| 2320 | 25 position: relative; |
| 2400 | 26 left: 0px; |
| 2320 | 27 right: -25px; |
| 2400 | 28 border-radius: 4px; |
| 29 margin: 0 1px; | |
| 2320 | 30 } |
| 31 `, | |
| 32 ]; | |
| 33 | |
| 34 @property() value: number = 0; | |
| 35 | |
| 36 @query("#handle") handleEl!: HTMLElement; | |
| 37 | |
| 2355 | 38 troughHeight = 80 - 2 - 2 - 5 - 5; |
| 2400 | 39 handleHeight = 16; |
| 2320 | 40 |
| 41 drag?: Drag; | |
| 42 unmutedValue: number = 1; | |
| 43 | |
| 44 render() { | |
| 45 return html` <div id="handle"><hr /></div> `; | |
| 46 } | |
| 47 | |
| 48 protected update(changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>): void { | |
| 49 super.update(changedProperties); | |
| 50 if (changedProperties.has("value")) { | |
| 51 } | |
| 52 } | |
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fader was echoing external edits as patches back into the graph. This fixes that the wrong way, circumventing lit
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parents:
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changeset
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53 valueChangedFromUi() { |
| 2400 | 54 this.value = clamp(this.value, 0, 1); |
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2210d934d62d
fader was echoing external edits as patches back into the graph. This fixes that the wrong way, circumventing lit
drewp@bigasterisk.com
parents:
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diff
changeset
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55 this.dispatchEvent(new CustomEvent("change", { detail: { value: this.value } })); |
|
2210d934d62d
fader was echoing external edits as patches back into the graph. This fixes that the wrong way, circumventing lit
drewp@bigasterisk.com
parents:
2331
diff
changeset
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56 } |
| 2320 | 57 |
| 58 protected updated(_changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>): void { | |
| 59 super.updated(_changedProperties); | |
| 60 const y = this.sliderTopY(this.value); | |
| 61 this.handleEl.style.top = y + "px"; | |
| 62 } | |
| 63 | |
| 64 protected firstUpdated(_changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>): void { | |
| 65 super.firstUpdated(_changedProperties); | |
| 66 this.handleEl.style.height = this.handleHeight + "px"; | |
| 67 this.events(); | |
| 68 } | |
| 69 | |
| 70 events() { | |
| 71 const hand = this.handleEl; | |
| 72 hand.addEventListener("mousedown", (ev: MouseEvent) => { | |
| 73 ev.stopPropagation(); | |
| 74 if (ev.buttons == 1) { | |
| 75 this.drag = new Drag(ev.clientY, this.value); | |
| 76 } else if (ev.buttons == 2) { | |
| 77 this.onRmb(); | |
| 78 } | |
| 79 }); | |
| 80 this.addEventListener("mousedown", (ev: MouseEvent) => { | |
| 81 ev.stopPropagation(); | |
| 82 if (ev.buttons == 1) { | |
| 83 this.value = this.sliderValue(ev.offsetY); | |
| 2400 | 84 this.valueChangedFromUi(); |
| 2320 | 85 this.drag = new Drag(ev.clientY, this.value); |
| 86 } else if (ev.buttons == 2) { | |
| 87 // RMB in trough | |
| 88 this.onRmb(); | |
| 89 } | |
| 90 }); | |
| 91 | |
| 92 this.addEventListener("contextmenu", (event) => { | |
| 93 event.preventDefault(); | |
| 94 }); | |
| 95 | |
| 96 this.addEventListener("wheel", (ev: WheelEvent) => { | |
| 97 ev.preventDefault(); | |
| 2400 | 98 this.value += (ev.deltaY / this.troughHeight) * -0.03; |
| 99 this.valueChangedFromUi(); | |
| 2320 | 100 }); |
| 101 | |
| 102 const maybeDrag = (ev: MouseEvent) => { | |
| 103 if (ev.buttons != 1) return; | |
| 104 if (this.drag === undefined) return; | |
| 105 ev.stopPropagation(); | |
| 106 this.onMouseDrag(ev.clientY - this.drag.startDragPxY!); | |
| 107 }; | |
| 108 hand.addEventListener("mousemove", maybeDrag); | |
| 109 this.addEventListener("mousemove", maybeDrag); | |
| 110 window.addEventListener("mousemove", maybeDrag); | |
| 111 | |
| 112 hand.addEventListener("mouseup", this.onMouseUpAnywhere.bind(this)); | |
| 113 this.addEventListener("mouseup", this.onMouseUpAnywhere.bind(this)); | |
| 114 window.addEventListener("mouseup", this.onMouseUpAnywhere.bind(this)); | |
| 115 } | |
| 116 onRmb() { | |
| 117 if (this.value > 0.1) { | |
| 118 // mute | |
| 119 this.unmutedValue = this.value; | |
| 120 this.value = 0; | |
| 121 } else { | |
| 122 // unmute | |
| 123 this.value = this.unmutedValue; | |
| 124 } | |
| 2400 | 125 this.valueChangedFromUi(); |
| 2320 | 126 } |
| 127 onMouseDrag(dy: number) { | |
| 128 if (this.drag === undefined) throw "unexpected"; | |
| 129 this.value = this.drag.startDragValue - dy / this.troughHeight; | |
| 2400 | 130 this.valueChangedFromUi(); |
| 2320 | 131 } |
| 132 | |
| 133 onMouseUpAnywhere() { | |
| 134 this.drag = undefined; | |
| 135 } | |
| 136 | |
| 137 sliderTopY(value: number): number { | |
| 2400 | 138 const usableY = this.troughHeight - this.handleHeight / 2 - 1; |
| 2320 | 139 const yAdj = this.handleHeight / 2 - 5 - 2; |
| 140 return (1 - value) * usableY + yAdj; | |
| 141 } | |
| 142 sliderValue(offsetY: number): number { | |
| 143 const usableY = this.troughHeight - this.handleHeight; | |
| 144 const yAdj = this.handleHeight / 2 - 5 - 2; | |
| 145 return clamp(1 - (offsetY - yAdj) / usableY, 0, 1); | |
| 146 } | |
| 147 } |