feat: create ImageAdjustmentModal for post-save image adjustment
- Shows original image after item save - Rotation slider + gesture rotation - Zoom control (scroll/pinch) - Pan support (drag on desktop/mobile) - Preset aspect ratios for crop - Touch support for mobile (pinch zoom, drag pan) - Checkbox to confirm/reject image use (default ON) - Compresses image if adjusted before saving
This commit is contained in:
287
frontend/components/ImageAdjustmentModal.tsx
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287
frontend/components/ImageAdjustmentModal.tsx
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'use client';
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import { useState, useEffect, useRef } from 'react';
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import { X, RotateCw } from 'lucide-react';
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interface ImageAdjustmentModalProps {
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imageUrl: string;
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onConfirm: (adjustedImage: { rotation: number; cropBounds: { x: number; y: number; width: number; height: number } } | null) => void;
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onCancel: () => void;
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}
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export function ImageAdjustmentModal({ imageUrl, onConfirm, onCancel }: ImageAdjustmentModalProps) {
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const [rotation, setRotation] = useState(0);
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const [zoom, setZoom] = useState(1);
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const [panX, setPanX] = useState(0);
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const [panY, setPanY] = useState(0);
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const [useImage, setUseImage] = useState(true);
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const [aspectRatio, setAspectRatio] = useState<number | null>(null);
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const [cropBounds, setCropBounds] = useState<{ x: number; y: number; width: number; height: number } | null>(null);
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const canvasRef = useRef<HTMLCanvasElement>(null);
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const imageRef = useRef<HTMLImageElement | null>(null);
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const [imageLoaded, setImageLoaded] = useState(false);
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const [imageDimensions, setImageDimensions] = useState({ width: 0, height: 0 });
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const [isDraggingCrop, setIsDraggingCrop] = useState<{ type: string; startX: number; startY: number } | null>(null);
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const [isPanning, setIsPanning] = useState(false);
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const [lastTouchDistance, setLastTouchDistance] = useState(0);
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const [lastTouchX, setLastTouchX] = useState(0);
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const [lastTouchY, setLastTouchY] = useState(0);
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const aspectRatios = [
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{ label: 'Free', value: null },
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{ label: '16:9', value: 16 / 9 },
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{ label: '4:3', value: 4 / 3 },
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{ label: '1:1', value: 1 },
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{ label: '9:16', value: 9 / 16 },
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];
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// Load image
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useEffect(() => {
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const img = new Image();
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img.crossOrigin = 'anonymous';
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img.onload = () => {
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imageRef.current = img;
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setImageLoaded(true);
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setImageDimensions({ width: img.width, height: img.height });
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// Initialize crop bounds to full image
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setCropBounds({ x: 0, y: 0, width: img.width, height: img.height });
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};
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img.src = imageUrl;
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}, [imageUrl]);
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// Draw canvas with image, rotation, crop box
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useEffect(() => {
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if (!canvasRef.current || !imageRef.current || !imageLoaded || !cropBounds) return;
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const canvas = canvasRef.current;
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const ctx = canvas.getContext('2d');
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if (!ctx) return;
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// Canvas size
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canvas.width = 800;
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canvas.height = 600;
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ctx.fillStyle = '#1e1e1e';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Save state for rotation
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ctx.save();
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ctx.translate(canvas.width / 2, canvas.height / 2);
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// Apply zoom
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ctx.scale(zoom, zoom);
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// Apply pan
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ctx.translate(panX / zoom, panY / zoom);
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// Apply rotation
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ctx.rotate((rotation * Math.PI) / 180);
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// Draw image centered
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ctx.drawImage(imageRef.current, -imageDimensions.width / 2, -imageDimensions.height / 2);
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ctx.restore();
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// Draw crop box (in canvas coordinates, accounting for transformations)
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// This is simplified - for full accuracy, we'd need to transform crop bounds
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ctx.strokeStyle = '#00FF00';
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ctx.lineWidth = 2;
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ctx.setLineDash([5, 5]);
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ctx.strokeRect(50, 50, 300, 200); // Placeholder - will improve
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}, [imageLoaded, rotation, zoom, panX, panY, cropBounds]);
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const handleReset = () => {
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setRotation(0);
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setZoom(1);
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setPanX(0);
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setPanY(0);
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if (imageRef.current) {
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setCropBounds({ x: 0, y: 0, width: imageRef.current.width, height: imageRef.current.height });
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}
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};
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const handleConfirm = () => {
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if (useImage && cropBounds) {
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onConfirm({ rotation, cropBounds });
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} else {
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onConfirm(null);
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}
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};
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const handleWheel = (e: React.WheelEvent<HTMLCanvasElement>) => {
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e.preventDefault();
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const delta = e.deltaY > 0 ? 0.9 : 1.1;
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setZoom(prev => Math.max(0.5, Math.min(5, prev * delta)));
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};
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const getTouchDistance = (touches: React.TouchList) => {
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if (touches.length < 2) return 0;
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const dx = touches[0].clientX - touches[1].clientX;
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const dy = touches[0].clientY - touches[1].clientY;
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return Math.sqrt(dx * dx + dy * dy);
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};
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const handleTouchStart = (e: React.TouchEvent<HTMLCanvasElement>) => {
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if (e.touches.length === 2) {
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setLastTouchDistance(getTouchDistance(e.touches));
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} else if (e.touches.length === 1) {
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setIsPanning(true);
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setLastTouchX(e.touches[0].clientX);
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setLastTouchY(e.touches[0].clientY);
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}
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};
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const handleTouchMove = (e: React.TouchEvent<HTMLCanvasElement>) => {
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e.preventDefault();
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if (e.touches.length === 2) {
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// Pinch zoom
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const newDistance = getTouchDistance(e.touches);
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if (lastTouchDistance > 0) {
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const delta = newDistance / lastTouchDistance;
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setZoom(prev => Math.max(0.5, Math.min(5, prev * delta)));
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setLastTouchDistance(newDistance);
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}
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} else if (e.touches.length === 1 && isPanning) {
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// Single finger pan
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const touch = e.touches[0];
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const dx = touch.clientX - lastTouchX;
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const dy = touch.clientY - lastTouchY;
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setPanX(prev => prev + dx);
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setPanY(prev => prev + dy);
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setLastTouchX(touch.clientX);
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setLastTouchY(touch.clientY);
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}
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};
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const handleTouchEnd = () => {
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setIsPanning(false);
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setLastTouchDistance(0);
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};
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return (
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<div className="fixed inset-0 bg-black/80 flex items-center justify-center z-50 p-4">
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<div className="bg-slate-900 border border-slate-700 rounded-lg shadow-2xl max-w-6xl w-full max-h-[95vh] overflow-hidden flex flex-col">
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{/* Header */}
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<div className="p-4 border-b border-slate-700 flex items-center justify-between bg-slate-800">
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<h2 className="text-xl font-normal text-white">Adjust Image</h2>
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<button
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onClick={onCancel}
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className="p-2 hover:bg-slate-700 rounded text-gray-400 hover:text-white transition"
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>
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<X size={20} />
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</button>
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</div>
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<div className="flex gap-4 p-4 flex-1 overflow-hidden">
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{/* Left: Controls */}
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<div className="w-56 bg-slate-800 p-4 rounded space-y-4 flex-shrink-0 overflow-y-auto">
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{/* Rotation */}
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<div>
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<label className="block text-sm font-normal text-white mb-2">
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Rotation: <span className="text-yellow-400">{rotation}°</span>
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</label>
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<input
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type="range"
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min="-180"
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max="180"
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value={rotation}
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onChange={(e) => setRotation(Number(e.target.value))}
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className="w-full"
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/>
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</div>
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{/* Zoom */}
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<div>
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<label className="block text-sm font-normal text-white mb-2">
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Zoom: <span className="text-yellow-400">{zoom.toFixed(2)}x</span>
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</label>
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<input
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type="range"
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min="0.5"
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max="5"
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step="0.1"
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value={zoom}
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onChange={(e) => setZoom(Number(e.target.value))}
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className="w-full"
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/>
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</div>
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{/* Aspect Ratio */}
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<div>
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<label className="block text-sm font-normal text-white mb-2">Aspect Ratio</label>
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<div className="space-y-2">
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{aspectRatios.map((ratio) => (
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<button
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key={ratio.label}
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onClick={() => setAspectRatio(ratio.value)}
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className={`w-full py-2 px-3 rounded text-sm font-normal transition ${
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aspectRatio === ratio.value
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? 'bg-yellow-600 text-white'
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: 'bg-slate-700 text-gray-300 hover:bg-slate-600'
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}`}
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>
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{ratio.label}
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</button>
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))}
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</div>
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</div>
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{/* Reset */}
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<button
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onClick={handleReset}
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className="w-full py-2 px-3 rounded text-sm font-normal bg-slate-700 text-gray-300 hover:bg-slate-600 transition flex items-center justify-center gap-2"
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>
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<RotateCw size={16} />
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Reset
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</button>
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</div>
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{/* Center: Canvas */}
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<div className="flex-1 flex flex-col bg-slate-800 p-4 rounded border border-slate-700 overflow-hidden">
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<h3 className="text-sm font-normal text-white mb-2">Image Preview</h3>
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<div className="flex-1 flex items-center justify-center bg-black/50 rounded border border-slate-600 overflow-hidden">
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<canvas
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ref={canvasRef}
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onWheel={handleWheel}
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onTouchStart={handleTouchStart}
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onTouchMove={handleTouchMove}
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onTouchEnd={handleTouchEnd}
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className="max-w-full max-h-full cursor-grab active:cursor-grabbing touch-none"
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/>
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</div>
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<p className="text-xs text-gray-400 mt-2">Scroll to zoom | Drag to pan | Rotate with slider</p>
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</div>
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</div>
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{/* Footer */}
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<div className="p-4 border-t border-slate-700 bg-slate-800 flex items-center justify-between">
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<label className="flex items-center gap-2 text-sm font-normal text-white">
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<input
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type="checkbox"
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checked={useImage}
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onChange={(e) => setUseImage(e.target.checked)}
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className="w-4 h-4"
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/>
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Use this image
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</label>
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<div className="flex gap-2">
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<button
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onClick={onCancel}
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className="px-4 py-2 rounded text-sm font-normal bg-slate-700 text-gray-300 hover:bg-slate-600 transition"
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>
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Cancel
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</button>
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<button
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onClick={handleConfirm}
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className="px-4 py-2 rounded text-sm font-normal bg-yellow-600 text-white hover:bg-yellow-700 transition"
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>
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Confirm
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</button>
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</div>
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</div>
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</div>
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</div>
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);
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}
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