-
-
Notifications
You must be signed in to change notification settings - Fork 28
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
fix(zoom): making zoom in+out a usable feature
- feat: keyboard viewport + tools to pan-around and reset
- Loading branch information
Showing
4 changed files
with
166 additions
and
72 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| import { FC, PropsWithChildren, useEffect, useRef } from "react"; | ||
|
|
||
| type KeyboardViewportType = PropsWithChildren<{ | ||
| className?: string; | ||
| }>; | ||
|
|
||
| const KEYMAP_SCALE = "keymap:scale"; | ||
| const DEFAULT_SCALE = window.localStorage.getItem(KEYMAP_SCALE) ?? "1"; | ||
|
|
||
| export const KeyboardViewport: FC<KeyboardViewportType> = ({ | ||
| children, | ||
| className, | ||
| }) => { | ||
| const targetRef = useRef<HTMLDivElement>(null); | ||
| const scaleRef = useRef<HTMLInputElement>(null); | ||
|
|
||
| const setScale = (param: "increase" | "decrease") => { | ||
| if (!targetRef.current || !scaleRef.current) return; | ||
|
|
||
| const current = scaleRef.current.value; | ||
|
|
||
| if (param === "increase" && Number(current) < 2) { | ||
| scaleRef.current.value = String(Number(scaleRef.current.value) + 0.2); | ||
| } | ||
|
|
||
| if (param === "decrease" && Number(current) > 0.2) { | ||
| scaleRef.current.value = String(Number(scaleRef.current.value) - 0.2); | ||
| } | ||
|
|
||
| localStorage.setItem(KEYMAP_SCALE, scaleRef.current.value); | ||
| targetRef.current.style.setProperty( | ||
| "transform", | ||
| `scale(${scaleRef.current.value})`, | ||
| ); | ||
| }; | ||
|
|
||
| const resetScale = () => { | ||
| if (!targetRef.current || !scaleRef.current) return; | ||
| targetRef.current.style.translate = "unset"; | ||
| targetRef.current.style.setProperty("transform", "scale(1)"); | ||
| scaleRef.current.value = "1"; | ||
| localStorage.setItem(KEYMAP_SCALE, "1"); | ||
| }; | ||
|
|
||
| useEffect(() => { | ||
| if (!targetRef.current) return; | ||
|
|
||
| const target = targetRef.current; | ||
| const offset = { x: 0, y: 0 }; | ||
| let isPanningActive = false; | ||
|
|
||
| function panStart(e: KeyboardEvent) { | ||
| if (e.key !== " ") return; | ||
| e.preventDefault(); | ||
|
|
||
| target.style.cursor = "grab"; | ||
| isPanningActive = true; | ||
| } | ||
|
|
||
| function panEnd(e: KeyboardEvent) { | ||
| if (e.key !== " ") return; | ||
| isPanningActive = false; | ||
| target.style.cursor = "unset"; | ||
| } | ||
|
|
||
| function panMove(e: PointerEvent) { | ||
| if (!isPanningActive) return; | ||
| offset.x += e.movementX; | ||
| offset.y += e.movementY; | ||
| target.style.translate = `${offset.x}px ${offset.y}px`; | ||
| } | ||
|
|
||
| document.addEventListener("keydown", panStart); | ||
| document.addEventListener("keyup", panEnd); | ||
| target.addEventListener("pointermove", panMove); | ||
|
|
||
| return () => { | ||
| document.removeEventListener("keydown", panStart); | ||
| document.removeEventListener("keyup", panEnd); | ||
| target.removeEventListener("pointermove", panMove); | ||
| }; | ||
| }, []); | ||
|
|
||
| useEffect(() => { | ||
| if (!scaleRef.current || !targetRef.current) return; | ||
|
|
||
| const input = scaleRef.current; | ||
| const target = targetRef.current; | ||
|
|
||
| input.value = DEFAULT_SCALE; | ||
| target.style.setProperty("transform", `scale(${DEFAULT_SCALE})`); | ||
|
|
||
| function onInputChange(e: Event) { | ||
| const value = (e.currentTarget as HTMLInputElement).value; | ||
| target.style.setProperty("transform", `scale(${value})`); | ||
| localStorage.setItem(KEYMAP_SCALE, value); | ||
| } | ||
|
|
||
| input.addEventListener("change", onInputChange); | ||
| return () => { | ||
| input.removeEventListener("change", onInputChange); | ||
| }; | ||
| }, []); | ||
|
|
||
| return ( | ||
| <div | ||
| className={[ | ||
| "relative size-full overflow-hidden p-0 touch-none", | ||
| className, | ||
| ].join(" ")} | ||
| > | ||
| <div | ||
| ref={targetRef} | ||
| className="flex size-full origin-center items-center justify-center transition-transform" | ||
| > | ||
| {children} | ||
| </div> | ||
|
|
||
| <div className="absolute bottom-[10px] left-1/2 ml-[-170px] flex justify-center items-center w-[298px] gap-1 rounded-xl bg-muted py-1 select-none bg-base-300"> | ||
| <button | ||
| className="block px-4 py-1.5 bg-base-100 rounded-l-lg" | ||
| onClick={() => setScale("decrease")} | ||
| > | ||
| - | ||
| </button> | ||
| <div className="flex h-9 px-2 justify-center items-center bg-base-100"> | ||
| <input | ||
| type="range" | ||
| name="scale" | ||
| min={0.25} | ||
| max={2} | ||
| step={0.01} | ||
| ref={scaleRef} | ||
| defaultValue={DEFAULT_SCALE} | ||
| className="mx-auto h-1 w-28 cursor-pointer appearance-none rounded-lg" | ||
| /> | ||
| </div> | ||
| <button | ||
| className="block px-4 py-1.5 bg-base-100" | ||
| onClick={() => setScale("increase")} | ||
| > | ||
| + | ||
| </button> | ||
| <button | ||
| className="block px-4 py-1.5 bg-base-100 rounded-r-lg" | ||
| onClick={resetScale} | ||
| > | ||
| Auto | ||
| </button> | ||
| </div> | ||
| </div> | ||
| ); | ||
| }; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters