added d3 and @types/d3 dependencies for enhanced data visualization capabilities in UI development

Signed-off-by: Matthias Puchstein <matthias@puchstein.bayern>

package-lock.json

@@ -9,6 +9,7 @@
       "version": "0.0.0",
       "dependencies": {
         "@tailwindcss/vite": "^4.1.11",
+        "d3": "^7.9.0",
         "react": "^19.1.0",
         "react-dom": "^19.1.0",
         "react-icons": "^5.5.0",
@@ -19,6 +20,7 @@
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         "@eslint/js": "^9.29.0",
+        "@types/d3": "^7.4.3",
         "@types/react": "^19.1.8",
         "@types/react-dom": "^19.1.6",
         "@types/react-slick": "^0.23.13",
@@ -1632,12 +1634,303 @@
         "@babel/types": "^7.20.7"
       }
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+      "license": "ISC",
+      "engines": {
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+    "node_modules/d3-transition": {
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+      "resolved": "https://registry.npmjs.org/d3-transition/-/d3-transition-3.0.1.tgz",
+      "integrity": "sha512-ApKvfjsSR6tg06xrL434C0WydLr7JewBB3V+/39RMHsaXTOG0zmt/OAXeng5M5LBm0ojmxJrpomQVZ1aPvBL4w==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-color": "1 - 3",
+        "d3-dispatch": "1 - 3",
+        "d3-ease": "1 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-timer": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "peerDependencies": {
+        "d3-selection": "2 - 3"
+      }
+    },
+    "node_modules/d3-zoom": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/d3-zoom/-/d3-zoom-3.0.0.tgz",
+      "integrity": "sha512-b8AmV3kfQaqWAuacbPuNbL6vahnOJflOhexLzMMNLga62+/nh0JzvJ0aO/5a5MVgUFGS7Hu1P9P03o3fJkDCyw==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-dispatch": "1 - 3",
+        "d3-drag": "2 - 3",
+        "d3-interpolate": "1 - 3",
+        "d3-selection": "2 - 3",
+        "d3-transition": "2 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.1",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.1.tgz",
@@ -2246,6 +2949,15 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/delaunator": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/delaunator/-/delaunator-5.0.1.tgz",
+      "integrity": "sha512-8nvh+XBe96aCESrGOqMp/84b13H9cdKbG5P2ejQCh4d4sK9RL4371qou9drQjMhvnPmhWl5hnmqbEE0fXr9Xnw==",
+      "license": "ISC",
+      "dependencies": {
+        "robust-predicates": "^3.0.2"
+      }
+    },
     "node_modules/detect-libc": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.0.4.tgz",
@@ -2720,6 +3432,18 @@
         "node": ">=8"
       }
     },
+    "node_modules/iconv-lite": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+      "license": "MIT",
+      "dependencies": {
+        "safer-buffer": ">= 2.1.2 < 3.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/ignore": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.3.2.tgz",
@@ -2757,6 +3481,15 @@
         "node": ">=0.8.19"
       }
     },
+    "node_modules/internmap": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/is-extglob": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
@@ -3594,6 +4327,12 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/robust-predicates": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.2.tgz",
+      "integrity": "sha512-IXgzBWvWQwE6PrDI05OvmXUIruQTcoMDzRsOd5CDvHCVLcLHMTSYvOK5Cm46kWqlV3yAbuSpBZdJ5oP5OUoStg==",
+      "license": "Unlicense"
+    },
     "node_modules/rollup": {
       "version": "4.44.1",
       "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.44.1.tgz",
@@ -3657,6 +4396,18 @@
         "queue-microtask": "^1.2.2"
       }
     },
+    "node_modules/rw": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz",
+      "integrity": "sha512-PdhdWy89SiZogBLaw42zdeqtRJ//zFd2PgQavcICDUgJT5oW10QCRKbJ6bg4r0/UY2M6BWd5tkxuGFRvCkgfHQ==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "license": "MIT"
+    },
     "node_modules/scheduler": {
       "version": "0.26.0",
       "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.26.0.tgz",

package.json

@@ -11,6 +11,7 @@
   },
   "dependencies": {
     "@tailwindcss/vite": "^4.1.11",
+    "d3": "^7.9.0",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
     "react-icons": "^5.5.0",
@@ -21,6 +22,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.29.0",
+    "@types/d3": "^7.4.3",
     "@types/react": "^19.1.8",
     "@types/react-dom": "^19.1.6",
     "@types/react-slick": "^0.23.13",

src/pages/dreamarchive/Technology.tsx

@@ -4,6 +4,240 @@ import HeroSection from '../../components/dreamarchive/HeroSection';
 import SectionHeader from '../../components/dreamarchive/SectionHeader';
 import DreamyCard from '../../components/dreamarchive/DreamyCard';
 import IconWithBackground from '../../components/dreamarchive/IconWithBackground';
+import {useEffect, useRef} from 'react';
+import * as d3 from 'd3';
+
+// Dream types data with percentages and colors
+const dreamTypesData = [
+    {type: "Angstträume", percentage: 34, color: "#ef4444", darkColor: "#dc2626", note: "Global durchschnittlich"},
+    {type: "Soziale Träume", percentage: 28, color: "#3b82f6", darkColor: "#2563eb", note: "Kulturelle Variationen"},
+    {type: "Sexuelle Träume", percentage: 12, color: "#ec4899", darkColor: "#db2777", note: "Altersabhängig"},
+    {type: "Flugträume", percentage: 18, color: "#a855f7", darkColor: "#9333ea", note: "Persönlichkeitsabhängig"},
+    {type: "Verfolgungsträume", percentage: 8, color: "#f97316", darkColor: "#ea580c", note: "Stresskorreliert"}
+];
+
+// D3.js Pie Chart Component
+function D3PieChart() {
+    const svgRef = useRef<SVGSVGElement>(null);
+    const tooltipRef = useRef<HTMLDivElement>(null);
+    const containerRef = useRef<HTMLDivElement>(null);
+    const isDarkMode = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
+
+    useEffect(() => {
+        if (!svgRef.current || !tooltipRef.current || !containerRef.current) return;
+
+        // Clear any existing SVG content
+        d3.select(svgRef.current).selectAll("*").remove();
+
+        // Set up dimensions
+        const width = svgRef.current.clientWidth;
+        const height = svgRef.current.clientHeight;
+        const margin = 10;
+        const radius = Math.min(width, height) / 2 - margin;
+
+        // Create SVG
+        const svg = d3.select(svgRef.current)
+            .attr("width", width)
+            .attr("height", height)
+            .append("g")
+            .attr("transform", `translate(${width / 2}, ${height / 2})`);
+
+        // Create pie generator
+        const pie = d3.pie<typeof dreamTypesData[0]>()
+            .value(d => d.percentage)
+            .sort(null);
+
+        // Create arc generator
+        const arc = d3.arc<d3.PieArcDatum<typeof dreamTypesData[0]>>()
+            .innerRadius(0)
+            .outerRadius(radius);
+
+        // Get tooltip element
+        const tooltip = d3.select(tooltipRef.current);
+
+        // Function to show tooltip
+        const showTooltip = (event: MouseEvent | TouchEvent, d: d3.PieArcDatum<typeof dreamTypesData[0]>) => {
+            const data = d.data;
+
+            // Set tooltip content
+            tooltip.html(`
+                <div class="font-bold">${data.type}</div>
+                <div>${data.percentage}%</div>
+                <div class="text-xs opacity-75">${data.note}</div>
+            `);
+
+            // Make tooltip visible
+            tooltip
+                .style("opacity", 1)
+                .style("visibility", "visible");
+
+            // Position tooltip
+            const containerRect = containerRef.current!.getBoundingClientRect();
+            let x, y;
+
+            if (event instanceof MouseEvent) {
+                x = event.clientX - containerRect.left;
+                y = event.clientY - containerRect.top;
+            } else {
+                // TouchEvent
+                const touch = (event as TouchEvent).touches[0];
+                x = touch.clientX - containerRect.left;
+                y = touch.clientY - containerRect.top;
+            }
+
+            // Adjust position to avoid going off the container
+            const tooltipRect = tooltipRef.current!.getBoundingClientRect();
+            if (x + tooltipRect.width > containerRect.width) {
+                x = x - tooltipRect.width;
+            }
+            if (y + tooltipRect.height > containerRect.height) {
+                y = y - tooltipRect.height;
+            }
+
+            tooltip
+                .style("left", `${x + 10}px`)
+                .style("top", `${y + 10}px`);
+        };
+
+        // Function to hide tooltip
+        const hideTooltip = () => {
+            tooltip
+                .style("opacity", 0)
+                .style("visibility", "hidden");
+        };
+
+        // Create pie chart with event handlers
+        svg.selectAll("path")
+            .data(pie(dreamTypesData))
+            .enter()
+            .append("path")
+            .attr("d", arc)
+            .attr("fill", d => isDarkMode ? d.data.darkColor : d.data.color)
+            .attr("stroke", "white")
+            .style("stroke-width", "1px")
+            .style("cursor", "pointer")
+            // Desktop hover events
+            .on("mouseover", function (event, d) {
+                // Calculate centroid for this arc to ensure zoom is centered properly
+                const centroid = arc.centroid(d);
+                const x = centroid[0];
+                const y = centroid[1];
+
+                d3.select(this).transition().duration(200)
+                    .attr("opacity", 0.8)
+                    .attr("stroke-width", "2px")
+                    // Apply zoom transformation centered on the arc's centroid
+                    .attr("transform", `translate(${x},${y}) scale(1.05) translate(${-x},${-y})`);
+                showTooltip(event, d);
+            })
+            .on("mouseout", function () {
+                d3.select(this).transition().duration(200)
+                    .attr("opacity", 1)
+                    .attr("stroke-width", "1px")
+                    .attr("transform", null); // Completely remove the transform to reset zoom
+                hideTooltip();
+            })
+            // Mobile/touch events
+            .on("touchstart", function (event, d) {
+                // Stop propagation to prevent document touchstart from firing
+                event.stopPropagation();
+                // Prevent default to avoid any browser handling
+                event.preventDefault();
+
+                // Store a reference to the element without using 'this'
+                const element = event.currentTarget;
+
+                // Calculate centroid for this arc to ensure zoom is centered properly
+                const centroid = arc.centroid(d);
+                const x = centroid[0];
+                const y = centroid[1];
+
+                // Visual feedback
+                d3.select(element).transition().duration(200)
+                    .attr("opacity", 0.8)
+                    .attr("stroke-width", "2px")
+                    // Apply zoom transformation centered on the arc's centroid
+                    .attr("transform", `translate(${x},${y}) scale(1.05) translate(${-x},${-y})`);
+
+                // Show tooltip
+                showTooltip(event, d);
+
+                // Add a temporary touchend handler to reset the visual state
+                // but keep the tooltip visible
+                document.addEventListener("touchend", function () {
+                    d3.select(element).transition().duration(200)
+                        .attr("opacity", 1)
+                        .attr("stroke-width", "1px")
+                        .attr("transform", null); // Completely remove the transform to reset zoom
+                }, {once: true});
+            })
+            .on("click", function (event, d) {
+                event.stopPropagation();
+                showTooltip(event, d);
+            });
+
+        // Add center circle
+        svg.append("circle")
+            .attr("cx", 0)
+            .attr("cy", 0)
+            .attr("r", radius * 0.4)
+            .attr("fill", isDarkMode ? "#1f2937" : "#ffffff")
+            .attr("stroke", isDarkMode ? "#374151" : "#e5e7eb")
+            .style("stroke-width", "1px");
+
+        // Add center text
+        svg.append("text")
+            .attr("text-anchor", "middle")
+            .attr("dy", "0.35em")
+            .attr("class", "text-sm font-bold")
+            .attr("fill", isDarkMode ? "#e5e7eb" : "#1f2937")
+            .text("100%");
+
+        // Create a function to handle document touchstart that doesn't immediately hide the tooltip
+        const handleDocumentTouchStart = (event: TouchEvent) => {
+            // Only hide the tooltip if the touch is outside the pie chart segments
+            const paths = svg.selectAll("path").nodes();
+            const touchTarget = document.elementFromPoint(
+                event.touches[0].clientX,
+                event.touches[0].clientY
+            );
+
+            // Don't hide if touching a pie segment
+            if (paths.some(path => path === touchTarget)) {
+                return;
+            }
+
+            hideTooltip();
+        };
+
+        // Add click event to document to hide tooltip when clicking outside
+        document.addEventListener("click", hideTooltip);
+        document.addEventListener("touchstart", handleDocumentTouchStart);
+
+        // Cleanup event listeners on unmount
+        return () => {
+            document.removeEventListener("click", hideTooltip);
+            document.removeEventListener("touchstart", handleDocumentTouchStart);
+        };
+    }, [isDarkMode]);
+
+    return (
+        <div ref={containerRef} className="relative w-full aspect-square max-w-xs mx-auto">
+            <svg ref={svgRef} className="w-full h-full"></svg>
+            <div
+                ref={tooltipRef}
+                className="absolute pointer-events-none bg-white dark:bg-gray-800 p-2 rounded shadow-lg text-sm z-10 transition-opacity duration-200"
+                style={{
+                    opacity: 0,
+                    visibility: 'hidden',
+                    maxWidth: '150px',
+                    border: '1px solid',
+                    borderColor: isDarkMode ? 'rgba(75, 85, 99, 0.5)' : 'rgba(229, 231, 235, 0.5)'
+                }}
+            ></div>
+        </div>
+    );
+}
 
 export default function Technology() {
     return (<div className="p-4 pt-24 pb-20 max-w-6xl mx-auto relative overflow-hidden">
@@ -116,42 +350,8 @@ export default function Technology() {
 
                 <div className="grid grid-cols-1 md:grid-cols-2 gap-6 mb-6">
                     <div>
-                        {/* Pie Chart Visualization (Mock) */}
-                        <div className="relative w-full aspect-square max-w-xs mx-auto">
-                            <div className="absolute inset-0 rounded-full bg-gray-200 dark:bg-gray-700"></div>
-
-                            {/* Angstträume: 34% */}
-                            <div className="absolute inset-0 rounded-full bg-red-500 dark:bg-red-600" style={{
-                                clipPath: 'polygon(50% 50%, 50% 0%, 100% 0%, 100% 50%, 75% 75%)'
-                            }}></div>
-
-                            {/* Soziale Träume: 28% */}
-                            <div className="absolute inset-0 rounded-full bg-blue-500 dark:bg-blue-600" style={{
-                                clipPath: 'polygon(50% 50%, 75% 75%, 50% 100%, 0% 100%, 0% 50%)'
-                            }}></div>
-
-                            {/* Sexuelle Träume: 12% */}
-                            <div className="absolute inset-0 rounded-full bg-pink-500 dark:bg-pink-600" style={{
-                                clipPath: 'polygon(50% 50%, 0% 50%, 0% 0%, 25% 0%)'
-                            }}></div>
-
-                            {/* Flugträume: 18% */}
-                            <div className="absolute inset-0 rounded-full bg-purple-500 dark:bg-purple-600" style={{
-                                clipPath: 'polygon(50% 50%, 25% 0%, 50% 0%)'
-                            }}></div>
-
-                            {/* Verfolgungsträume: 8% */}
-                            <div className="absolute inset-0 rounded-full bg-orange-500 dark:bg-orange-600" style={{
-                                clipPath: 'polygon(50% 50%, 50% 100%, 25% 100%)'
-                            }}></div>
-
-                            <div className="absolute inset-0 flex items-center justify-center">
-                                <div
-                                    className="w-16 h-16 rounded-full bg-white dark:bg-gray-900 flex items-center justify-center text-sm font-bold">
-                                    100%
-                                </div>
-                            </div>
-                        </div>
+                        {/* D3.js Pie Chart */}
+                        <D3PieChart/>
                     </div>
 
                     <div>