|
| 1 | +'use client'; |
| 2 | + |
| 3 | +import { MinusIcon, PlusIcon } from '@phosphor-icons/react'; |
| 4 | +import { |
| 5 | + motion, |
| 6 | + useMotionValue, |
| 7 | + useMotionValueEvent, |
| 8 | + useTransform, |
| 9 | +} from 'motion/react'; |
| 10 | +import { useEffect, useRef, useState } from 'react'; |
| 11 | +import { cn } from '@/lib/utils'; |
| 12 | + |
| 13 | +const MAX_OVERFLOW = 30; |
| 14 | + |
| 15 | +interface SliderProps { |
| 16 | + value?: number; |
| 17 | + onValueChange?: (value: number) => void; |
| 18 | + min?: number; |
| 19 | + max?: number; |
| 20 | + step?: number; |
| 21 | + className?: string; |
| 22 | + leftIcon?: React.ReactNode; |
| 23 | + rightIcon?: React.ReactNode; |
| 24 | + showValue?: boolean; |
| 25 | + disabled?: boolean; |
| 26 | +} |
| 27 | + |
| 28 | +export function Slider({ |
| 29 | + value = 0, |
| 30 | + onValueChange, |
| 31 | + min = 0, |
| 32 | + max = 100, |
| 33 | + step = 1, |
| 34 | + className, |
| 35 | + leftIcon = <MinusIcon size={16} />, |
| 36 | + rightIcon = <PlusIcon size={16} />, |
| 37 | + showValue = true, |
| 38 | + disabled = false, |
| 39 | +}: SliderProps) { |
| 40 | + const [internalValue, setInternalValue] = useState(value); |
| 41 | + const sliderRef = useRef<HTMLDivElement>(null); |
| 42 | + const [region, setRegion] = useState<'left' | 'middle' | 'right'>('middle'); |
| 43 | + const [isDragging, setIsDragging] = useState(false); |
| 44 | + |
| 45 | + const clientX = useMotionValue(0); |
| 46 | + const overflow = useMotionValue(0); |
| 47 | + |
| 48 | + useEffect(() => { |
| 49 | + setInternalValue(value); |
| 50 | + }, [value]); |
| 51 | + |
| 52 | + useMotionValueEvent(clientX, 'change', (latest: number) => { |
| 53 | + if (sliderRef.current && isDragging) { |
| 54 | + const { left, right } = sliderRef.current.getBoundingClientRect(); |
| 55 | + let newOverflow: number; |
| 56 | + |
| 57 | + if (latest < left) { |
| 58 | + setRegion('left'); |
| 59 | + newOverflow = left - latest; |
| 60 | + } else if (latest > right) { |
| 61 | + setRegion('right'); |
| 62 | + newOverflow = latest - right; |
| 63 | + } else { |
| 64 | + setRegion('middle'); |
| 65 | + newOverflow = 0; |
| 66 | + } |
| 67 | + |
| 68 | + overflow.jump(decay(newOverflow, MAX_OVERFLOW)); |
| 69 | + } |
| 70 | + }); |
| 71 | + |
| 72 | + const handlePointerMove = (e: React.PointerEvent<HTMLDivElement>) => { |
| 73 | + if (!isDragging || disabled || !sliderRef.current) { |
| 74 | + return; |
| 75 | + } |
| 76 | + |
| 77 | + const { left, width } = sliderRef.current.getBoundingClientRect(); |
| 78 | + let newValue = min + ((e.clientX - left) / width) * (max - min); |
| 79 | + |
| 80 | + // Apply step |
| 81 | + if (step > 0) { |
| 82 | + newValue = Math.round(newValue / step) * step; |
| 83 | + } |
| 84 | + |
| 85 | + // Clamp to bounds |
| 86 | + newValue = Math.min(Math.max(newValue, min), max); |
| 87 | + |
| 88 | + setInternalValue(newValue); |
| 89 | + onValueChange?.(newValue); |
| 90 | + clientX.jump(e.clientX); |
| 91 | + }; |
| 92 | + |
| 93 | + const handlePointerDown = (e: React.PointerEvent<HTMLDivElement>) => { |
| 94 | + if (disabled) { |
| 95 | + return; |
| 96 | + } |
| 97 | + |
| 98 | + setIsDragging(true); |
| 99 | + handlePointerMove(e); |
| 100 | + e.currentTarget.setPointerCapture(e.pointerId); |
| 101 | + }; |
| 102 | + |
| 103 | + const handlePointerUp = () => { |
| 104 | + setIsDragging(false); |
| 105 | + setRegion('middle'); |
| 106 | + overflow.jump(0); |
| 107 | + }; |
| 108 | + |
| 109 | + const getPercentage = (): number => { |
| 110 | + const range = max - min; |
| 111 | + if (range === 0) { |
| 112 | + return 0; |
| 113 | + } |
| 114 | + return ((internalValue - min) / range) * 100; |
| 115 | + }; |
| 116 | + |
| 117 | + return ( |
| 118 | + <div className={cn('space-y-3', className)}> |
| 119 | + <div |
| 120 | + className={cn( |
| 121 | + 'flex items-center gap-4', |
| 122 | + disabled && 'cursor-not-allowed opacity-50' |
| 123 | + )} |
| 124 | + > |
| 125 | + {/* Left Icon */} |
| 126 | + <motion.div |
| 127 | + className="flex-shrink-0 text-muted-foreground" |
| 128 | + style={{ |
| 129 | + x: useTransform(() => |
| 130 | + region === 'left' ? -overflow.get() / 2 : 0 |
| 131 | + ), |
| 132 | + scale: region === 'left' ? 1.3 : 1, |
| 133 | + }} |
| 134 | + > |
| 135 | + {leftIcon} |
| 136 | + </motion.div> |
| 137 | + |
| 138 | + {/* Slider Track */} |
| 139 | + <div |
| 140 | + className={cn( |
| 141 | + 'relative flex-1 cursor-pointer touch-none', |
| 142 | + disabled && 'cursor-not-allowed' |
| 143 | + )} |
| 144 | + onPointerDown={handlePointerDown} |
| 145 | + onPointerLeave={handlePointerUp} |
| 146 | + onPointerMove={handlePointerMove} |
| 147 | + onPointerUp={handlePointerUp} |
| 148 | + ref={sliderRef} |
| 149 | + > |
| 150 | + <motion.div |
| 151 | + className="relative" |
| 152 | + style={{ |
| 153 | + scaleX: useTransform(() => { |
| 154 | + if (sliderRef.current) { |
| 155 | + const { width } = sliderRef.current.getBoundingClientRect(); |
| 156 | + return 1 + overflow.get() / width; |
| 157 | + } |
| 158 | + return 1; |
| 159 | + }), |
| 160 | + scaleY: useTransform(overflow, [0, MAX_OVERFLOW], [1, 0.7]), |
| 161 | + transformOrigin: useTransform(() => { |
| 162 | + if (sliderRef.current) { |
| 163 | + const { left, width } = |
| 164 | + sliderRef.current.getBoundingClientRect(); |
| 165 | + return clientX.get() < left + width / 2 ? 'right' : 'left'; |
| 166 | + } |
| 167 | + return 'center'; |
| 168 | + }), |
| 169 | + }} |
| 170 | + > |
| 171 | + {/* Track Background */} |
| 172 | + <div className="h-2 w-full rounded-full bg-secondary"> |
| 173 | + {/* Progress */} |
| 174 | + <div |
| 175 | + className="h-full rounded-full bg-primary" |
| 176 | + style={{ width: `${getPercentage()}%` }} |
| 177 | + /> |
| 178 | + </div> |
| 179 | + |
| 180 | + {/* Thumb */} |
| 181 | + <motion.div |
| 182 | + className="-translate-y-1/2 absolute top-1/2 h-4 w-4 rounded-full border-2 border-primary bg-background shadow-sm" |
| 183 | + style={{ |
| 184 | + left: `${getPercentage()}%`, |
| 185 | + x: '-50%', |
| 186 | + }} |
| 187 | + whileHover={{ scale: 1.1 }} |
| 188 | + whileTap={{ scale: 0.95 }} |
| 189 | + /> |
| 190 | + </motion.div> |
| 191 | + </div> |
| 192 | + |
| 193 | + {/* Right Icon */} |
| 194 | + <motion.div |
| 195 | + className="flex-shrink-0 text-muted-foreground" |
| 196 | + style={{ |
| 197 | + x: useTransform(() => |
| 198 | + region === 'right' ? overflow.get() / 2 : 0 |
| 199 | + ), |
| 200 | + scale: region === 'right' ? 1.3 : 1, |
| 201 | + }} |
| 202 | + > |
| 203 | + {rightIcon} |
| 204 | + </motion.div> |
| 205 | + </div> |
| 206 | + |
| 207 | + {/* Value Display */} |
| 208 | + {showValue && ( |
| 209 | + <div className="text-center"> |
| 210 | + <span className="font-medium font-mono text-sm"> |
| 211 | + {Math.round(internalValue)} |
| 212 | + {max === 100 && '%'} |
| 213 | + </span> |
| 214 | + </div> |
| 215 | + )} |
| 216 | + </div> |
| 217 | + ); |
| 218 | +} |
| 219 | + |
| 220 | +// Decay function for smooth overflow animation |
| 221 | +function decay(value: number, max: number): number { |
| 222 | + if (max === 0) { |
| 223 | + return 0; |
| 224 | + } |
| 225 | + const entry = value / max; |
| 226 | + const sigmoid = 2 * (1 / (1 + Math.exp(-entry)) - 0.5); |
| 227 | + return sigmoid * max; |
| 228 | +} |
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