Fix: Rapport screenshot now uses coordinate-based rendering for correct symbol sizes, labels, arrowheads

src/app/app/page.tsx

@@ -102,88 +102,217 @@ export default function AppPage() {
     sessionIdRef.current = `${Date.now()}-${Math.random().toString(36).slice(2, 10)}`
   }
 
-  // Capture map screenshot when switching to journal tab (including HTML symbol markers)
+  // Capture map screenshot when switching to journal tab (coordinate-based rendering)
   const handleTabChange = useCallback(async (tab: 'map' | 'journal') => {
     if (tab === 'journal' && mapRef.current) {
       try {
-        const mapCanvas = mapRef.current.getCanvas()
-        if (mapCanvas) {
+        const mapInstance = mapRef.current
+        const mapCanvas = mapInstance.getCanvas() as HTMLCanvasElement
+        if (mapCanvas && mapCanvas.width > 0) {
           const offscreen = document.createElement('canvas')
           offscreen.width = mapCanvas.width
           offscreen.height = mapCanvas.height
           const ctx = offscreen.getContext('2d')
           if (ctx) {
             ctx.drawImage(mapCanvas, 0, 0)
-            const dpr = window.devicePixelRatio || 1
-            const mapContainer = mapRef.current.getContainer()
-            const mapRect = mapContainer.getBoundingClientRect()
 
-            // Collect all symbol images and preload them (async for URL-based images)
-            const symbolEntries: { img: HTMLImageElement; x: number; y: number; w: number; h: number; rotation: number }[] = []
-            const loadPromises: Promise<void>[] = []
+            const container = mapInstance.getContainer()
+            const dpr = mapCanvas.width / container.offsetWidth
+            const currentZoom = mapInstance.getZoom()
+            const currentFeatures = featuresRef.current
 
-            document.querySelectorAll<HTMLElement>('.symbol-marker-wrapper').forEach(wrapper => {
-              const rect = wrapper.getBoundingClientRect()
-              const inner = wrapper.querySelector<HTMLElement>('.symbol-marker')
-              if (!inner) return
-              const bgImage = inner.style.backgroundImage
-              const urlMatch = bgImage.match(/url\("?(.+?)"?\)/)
-              if (!urlMatch) return
-              const imgSrc = urlMatch[1]
-              const img = new Image()
-              img.crossOrigin = 'anonymous'
-              img.src = imgSrc
-              const entry = {
-                img,
-                x: (rect.left - mapRect.left) * dpr,
-                y: (rect.top - mapRect.top) * dpr,
-                w: rect.width * dpr,
-                h: rect.height * dpr,
-                rotation: parseFloat(inner.style.transform?.match(/rotate\((.+?)deg\)/)?.[1] || '0'),
-              }
-              symbolEntries.push(entry)
-              if (!img.complete) {
-                loadPromises.push(new Promise<void>((resolve) => {
-                  img.onload = () => resolve()
-                  img.onerror = () => resolve()
-                }))
-              }
-            })
-
-            // Wait for all symbol images to load (max 3s timeout)
-            if (loadPromises.length > 0) {
-              await Promise.race([
-                Promise.all(loadPromises),
-                new Promise(r => setTimeout(r, 3000)),
-              ])
+            // Helper: haversine distance
+            const haversine = (a: number[], b: number[]): number => {
+              const R = 6371000, toRad = Math.PI / 180
+              const dLat = (b[1] - a[1]) * toRad, dLng = (b[0] - a[0]) * toRad
+              const x = Math.sin(dLat / 2) ** 2 + Math.cos(a[1] * toRad) * Math.cos(b[1] * toRad) * Math.sin(dLng / 2) ** 2
+              return R * 2 * Math.atan2(Math.sqrt(x), Math.sqrt(1 - x))
             }
 
-            // Draw all symbol markers
-            symbolEntries.forEach(({ img, x, y, w, h, rotation }) => {
-              if (img.complete && img.naturalWidth > 0) {
-                ctx.save()
-                ctx.translate(x + w / 2, y + h / 2)
-                if (rotation) ctx.rotate((rotation * Math.PI) / 180)
-                ctx.drawImage(img, -w / 2, -h / 2, w, h)
-                ctx.restore()
-              }
+            // Helper: load image as promise
+            const loadImage = (src: string): Promise<HTMLImageElement> => new Promise((resolve, reject) => {
+              const img = new Image()
+              img.crossOrigin = 'anonymous'
+              img.onload = () => resolve(img)
+              img.onerror = reject
+              img.src = src
             })
 
-            // Draw text markers
-            document.querySelectorAll<HTMLElement>('.text-marker').forEach(el => {
-              const rect = el.getBoundingClientRect()
-              const x = (rect.left - mapRect.left) * dpr
-              const y = (rect.top - mapRect.top) * dpr
-              const text = el.textContent || ''
-              const fontSize = parseFloat(el.style.fontSize || '14') * dpr
-              const color = el.style.color || '#000'
+            // 1. Draw symbol features (coordinate-based)
+            for (const f of currentFeatures.filter(f => f.type === 'symbol')) {
+              if (f.geometry.type !== 'Point') continue
+              const coords = f.geometry.coordinates as [number, number]
+              const pixel = mapInstance.project(coords)
+              const px = pixel.x * dpr
+              const py = pixel.y * dpr
+              const scale = (f.properties.scale as number) || 1
+              const rotation = (f.properties.rotation as number) || 0
+              const baseSize = 32
+              const placementZoom = (f.properties.placementZoom as number) || 17
+              const zoomFactor = Math.pow(2, currentZoom - placementZoom)
+              const size = Math.max(8, Math.min(400, baseSize * scale * zoomFactor)) * dpr
+
+              const iconId = f.properties.iconId as string
+              const imageUrl = f.properties.imageUrl as string
+              let imgSrc = imageUrl || ''
+              if (!imgSrc && iconId) {
+                const { getSymbolById, getSymbolDataUri } = await import('@/lib/fw-symbols')
+                const sym = getSymbolById(iconId)
+                if (sym) imgSrc = getSymbolDataUri(sym)
+              }
+              if (imgSrc) {
+                try {
+                  const img = await loadImage(imgSrc)
+                  const imgAspect = img.naturalWidth / img.naturalHeight
+                  let drawW = size, drawH = size
+                  if (imgAspect > 1) drawH = size / imgAspect
+                  else drawW = size * imgAspect
+                  ctx.save()
+                  ctx.translate(px, py)
+                  ctx.rotate((rotation * Math.PI) / 180)
+                  ctx.drawImage(img, -drawW / 2, -drawH / 2, drawW, drawH)
+                  ctx.restore()
+                } catch {}
+              }
+            }
+
+            // 2. Draw arrowheads for arrow features
+            for (const f of currentFeatures.filter(f => f.type === 'arrow')) {
+              if (f.geometry.type !== 'LineString') continue
+              const lineCoords = f.geometry.coordinates as number[][]
+              if (lineCoords.length < 2) continue
+              const p1 = lineCoords[lineCoords.length - 2]
+              const p2 = lineCoords[lineCoords.length - 1]
+              const px1 = mapInstance.project(p1 as [number, number])
+              const px2 = mapInstance.project(p2 as [number, number])
+              const angle = Math.atan2(px2.y - px1.y, px2.x - px1.x)
+              const color = (f.properties.color as string) || '#000000'
+              const arrowSize = 14 * dpr
+
               ctx.save()
-              ctx.font = `bold ${fontSize}px sans-serif`
+              ctx.translate(px2.x * dpr, px2.y * dpr)
+              ctx.rotate(angle + Math.PI / 2)
+              ctx.beginPath()
+              ctx.moveTo(0, -arrowSize)
+              ctx.lineTo(-arrowSize * 0.7, arrowSize * 0.3)
+              ctx.lineTo(arrowSize * 0.7, arrowSize * 0.3)
+              ctx.closePath()
               ctx.fillStyle = color
-              ctx.textBaseline = 'top'
-              ctx.fillText(text, x, y)
+              ctx.fill()
               ctx.restore()
-            })
+            }
+
+            // 3. Draw line/polygon labels at midpoints
+            for (const f of currentFeatures.filter(f => f.properties.label && (f.geometry.type === 'LineString' || f.geometry.type === 'Polygon'))) {
+              const label = f.properties.label as string
+              let midpoint: [number, number]
+
+              if (f.geometry.type === 'LineString') {
+                const coords = f.geometry.coordinates as number[][]
+                const midIdx = Math.floor(coords.length / 2)
+                if (coords.length === 2) {
+                  midpoint = [(coords[0][0] + coords[1][0]) / 2, (coords[0][1] + coords[1][1]) / 2]
+                } else {
+                  midpoint = coords[midIdx] as [number, number]
+                }
+              } else {
+                const ring = (f.geometry.coordinates as number[][][])[0]
+                const len = ring.length - 1
+                let cx = 0, cy = 0
+                for (let i = 0; i < len; i++) { cx += ring[i][0]; cy += ring[i][1] }
+                midpoint = [cx / len, cy / len]
+              }
+
+              const pixel = mapInstance.project(midpoint)
+              const px = pixel.x * dpr
+              const py = pixel.y * dpr
+              const isDanger = f.type === 'dangerzone'
+              const bgColor = isDanger ? 'rgba(220,38,38,0.85)' : 'rgba(0,0,0,0.75)'
+              const borderColor = isDanger ? '#dc2626' : 'rgba(255,255,255,0.5)'
+
+              // Build label text with line info
+              let displayText = label
+              let infoText = ''
+              if (f.geometry.type === 'LineString') {
+                const lineCoords = f.geometry.coordinates as number[][]
+                let totalLen = 0
+                for (let i = 1; i < lineCoords.length; i++) {
+                  totalLen += haversine(lineCoords[i - 1], lineCoords[i])
+                }
+                const hoseCount = Math.ceil(totalLen / 20)
+                const lenText = totalLen < 1000 ? `${Math.round(totalLen)}m` : `${(totalLen / 1000).toFixed(2)}km`
+                infoText = `${lenText} / ${hoseCount} Schl.`
+              }
+
+              const fontSize1 = 11 * dpr
+              const fontSize2 = 8 * dpr
+              const padX = 6 * dpr
+              const padY = 3 * dpr
+
+              ctx.save()
+              ctx.font = `bold ${fontSize1}px system-ui, sans-serif`
+              const w1 = ctx.measureText(displayText).width
+              let w2 = 0
+              if (infoText) {
+                ctx.font = `${fontSize2}px system-ui, sans-serif`
+                w2 = ctx.measureText(infoText).width
+              }
+              const boxW = Math.max(w1, w2) + padX * 2
+              const boxH = fontSize1 + (infoText ? fontSize2 + 2 * dpr : 0) + padY * 2
+              const radius = 3 * dpr
+
+              // Background
+              ctx.fillStyle = bgColor
+              ctx.beginPath()
+              ctx.roundRect(px - boxW / 2, py - boxH / 2, boxW, boxH, radius)
+              ctx.fill()
+              // Border
+              ctx.strokeStyle = borderColor
+              ctx.lineWidth = 1 * dpr
+              ctx.beginPath()
+              ctx.roundRect(px - boxW / 2, py - boxH / 2, boxW, boxH, radius)
+              ctx.stroke()
+              // Label text
+              ctx.fillStyle = '#ffffff'
+              ctx.font = `bold ${fontSize1}px system-ui, sans-serif`
+              ctx.textAlign = 'center'
+              ctx.textBaseline = 'middle'
+              const textY = infoText ? py - fontSize2 / 2 : py
+              ctx.fillText(displayText, px, textY)
+              // Info text
+              if (infoText) {
+                ctx.font = `${fontSize2}px system-ui, sans-serif`
+                ctx.globalAlpha = 0.8
+                ctx.fillText(infoText, px, py + fontSize1 / 2 + 1 * dpr)
+                ctx.globalAlpha = 1
+              }
+              ctx.restore()
+            }
+
+            // 4. Draw text features
+            for (const f of currentFeatures.filter(f => f.type === 'text')) {
+              if (f.geometry.type !== 'Point') continue
+              const coords = f.geometry.coordinates as [number, number]
+              const pixel = mapInstance.project(coords)
+              const px = pixel.x * dpr
+              const py = pixel.y * dpr
+              const text = (f.properties.text as string) || ''
+              const fontSize = ((f.properties.fontSize as number) || 14) * dpr
+              const color = (f.properties.color as string) || '#000000'
+
+              ctx.save()
+              ctx.font = `bold ${fontSize}px system-ui, sans-serif`
+              ctx.textAlign = 'center'
+              ctx.textBaseline = 'middle'
+              ctx.strokeStyle = '#ffffff'
+              ctx.lineWidth = 3 * dpr
+              ctx.lineJoin = 'round'
+              ctx.strokeText(text, px, py)
+              ctx.fillStyle = color
+              ctx.fillText(text, px, py)
+              ctx.restore()
+            }
+
             setLastMapScreenshot(offscreen.toDataURL('image/png'))
           } else {
             setLastMapScreenshot(mapCanvas.toDataURL('image/png'))