Handle thumbnails for templates

src/components/relationship.jsx

@@ -1,88 +1,8 @@
 import { React, useState } from "react";
+import { calcPath } from "../utils";
 
 export default function Relationship(props) {
   const [hovered, setHovered] = useState(false);
-  const calcPath = (x1, x2, y1, y2) => {
-    let r = 16;
-    const offsetX = 8;
-    const tableWidth = 200;
-    const midX = (x2 + x1 + tableWidth) / 2;
-    const endX = x2 + tableWidth < x1 ? x2 + tableWidth - offsetX * 2 : x2;
-
-    if (Math.abs(y1 - y2) <= 36) {
-      r = Math.abs(y2 - y1) / 3;
-      if (r <= 2) {
-        if (x1 + tableWidth <= x2)
-          return `M ${x1 + tableWidth - 2 * offsetX} ${y1} L ${x2 + 0.1} ${
-            y2 + 0.1
-          }`;
-        else if (x2 + tableWidth < x1)
-          return `M ${x2 + tableWidth - 2 * offsetX} ${y2} L ${x1 + 0.1} ${
-            y1 + 0.1
-          }`;
-      }
-    }
-
-    if (y1 <= y2) {
-      if (x1 + tableWidth <= x2) {
-        return `M ${x1 + tableWidth - offsetX * 2} ${y1} L ${
-          midX - r
-        } ${y1} A ${r} ${r} 0 0 1 ${midX} ${y1 + r} L ${midX} ${
-          y2 - r
-        } A ${r} ${r} 0 0 0 ${midX + r} ${y2} L ${endX} ${y2}`;
-      } else if (x2 <= x1 + tableWidth && x1 <= x2) {
-        return `M ${x1 + tableWidth - 2 * offsetX} ${y1} L ${
-          x2 + tableWidth
-        } ${y1} A ${r} ${r} 0 0 1 ${x2 + tableWidth + r} ${y1 + r} L ${
-          x2 + tableWidth + r
-        } ${y2 - r} A ${r} ${r} 0 0 1 ${x2 + tableWidth} ${y2} L ${
-          x2 + tableWidth - 2 * offsetX
-        } ${y2}`;
-      } else if (x2 + tableWidth >= x1 && x2 + tableWidth <= x1 + tableWidth) {
-        return `M ${x1} ${y1} L ${x2 - r} ${y1} A ${r} ${r} 0 0 ${0} ${
-          x2 - r - r
-        } ${y1 + r} L ${x2 - r - r} ${y2 - r} A ${r} ${r} 0 0 0 ${
-          x2 - r
-        } ${y2} L ${x2} ${y2}`;
-      } else {
-        return `M ${x1} ${y1} L ${midX + r} ${y1} A ${r} ${r} 0 0 0 ${midX} ${
-          y1 + r
-        } L ${midX} ${y2 - r} A ${r} ${r} 0 0 1 ${
-          midX - r
-        } ${y2} L ${endX} ${y2}`;
-      }
-    } else {
-      if (x1 + tableWidth <= x2) {
-        return `M ${x1 + tableWidth - offsetX * 2} ${y1} L ${
-          midX - r
-        } ${y1} A ${r} ${r} 0 0 0 ${midX} ${y1 - r} L ${midX} ${
-          y2 + r
-        } A ${r} ${r} 0 0 1 ${midX + r} ${y2} L ${endX} ${y2}`;
-      } else if (x1 + tableWidth >= x2 && x1 + tableWidth <= x2 + tableWidth) {
-        return `M ${x1} ${y1} L ${x1 - r} ${y1} A ${r} ${r} 0 0 1 ${
-          x1 - r - r
-        } ${y1 - r} L ${x1 - r - r} ${y2 + r} A ${r} ${r} 0 0 1 ${
-          x1 - r
-        } ${y2} L ${endX} ${y2}`;
-      } else if (x1 >= x2 && x1 <= x2 + tableWidth) {
-        return `M ${x1 + tableWidth - 2 * offsetX} ${y1} L ${
-          x1 + tableWidth - 2 * offsetX + r
-        } ${y1} A ${r} ${r} 0 0 0 ${x1 + tableWidth - 2 * offsetX + r + r} ${
-          y1 - r
-        } L ${x1 + tableWidth - 2 * offsetX + r + r} ${
-          y2 + r
-        } A ${r} ${r} 0 0 0 ${x1 + tableWidth - 2 * offsetX + r} ${y2} L ${
-          x2 + tableWidth - 2 * offsetX
-        } ${y2}`;
-      } else {
-        return `M ${x1} ${y1} L ${midX + r} ${y1} A ${r} ${r} 0 0 1 ${midX} ${
-          y1 - r
-        } L ${midX} ${y2 + r} A ${r} ${r} 0 0 0 ${
-          midX - r
-        } ${y2} L ${endX} ${y2}`;
-      }
-    }
-  };
 
   return (
     <g>

src/data/seeds.js

@@ -2,9 +2,9 @@ const t1 = {
   tables: [
     {
       id: 0,
-      name: "template_1",
+      name: "table_0",
-      x: 57,
+      x: 73,
-      y: 63,
+      y: 69,
       fields: [
         {
           name: "id",
@@ -21,12 +21,72 @@ const t1 = {
       ],
       comment: "",
       indices: [],
-      color: "#f03c3c",
+      color: "#175e7a",
+    },
+    {
+      id: 1,
+      name: "table_1",
+      x: 366,
+      y: 117,
+      fields: [
+        {
+          name: "id",
+          type: "INT",
+          default: "",
+          check: "",
+          primary: true,
+          unique: true,
+          notNull: true,
+          increment: true,
+          comment: "",
+          id: 0,
+        },
+      ],
+      comment: "",
+      indices: [],
+      color: "#175e7a",
+    },
+  ],
+  relationships: [
+    {
+      startTableId: 0,
+      startFieldId: 0,
+      endTableId: 1,
+      endFieldId: 0,
+      startX: 88,
+      startY: 138,
+      endX: 381,
+      endY: 186,
+      name: "table_0_id_fk",
+      cardinality: "One to one",
+      updateConstraint: "No action",
+      deleteConstraint: "No action",
+      mandatory: false,
+      id: 0,
+    },
+  ],
+  notes: [
+    {
+      id: 0,
+      x: 526,
+      y: 240,
+      title: "note_0",
+      content: "hi",
+      color: "#fcf7ac",
+      height: 65,
+    },
+  ],
+  subjectAreas: [
+    {
+      id: 0,
+      name: "area_0",
+      x: 43,
+      y: 28,
+      width: 558,
+      height: 206,
+      color: "#175e7a",
     },
   ],
-  relationships: [],
-  notes: [],
-  subjectAreas: [],
   types: [],
   title: "Template 1",
   description: "Lorem ipsum",

src/pages/Templates.jsx

@@ -4,10 +4,12 @@ import { Link } from "react-router-dom";
 import { Tabs, TabPane } from "@douyinfe/semi-ui";
 import { useLiveQuery } from "dexie-react-hooks";
 import { db } from "../data/db";
+import { calcPath } from "../utils";
 
-function cardCanvas(diagram) {
+function Thumbnail({ diagram }) {
+  const zoom = 0.3;
   return (
-    <div className="w-full">
+    <div className="w-full select-none">
       <svg className="bg-white w-full">
         <defs>
           <pattern
@@ -36,25 +38,35 @@ function cardCanvas(diagram) {
           fill="url(#pattern-circles)"
         ></rect>
         <g id="diagram">
-          {/* {diagram.areas.map((a) => (
+          {diagram.subjectAreas?.map((a) => (
-              <Area
+            <foreignObject
               key={a.id}
-                areaData={a}
+              x={a.x * zoom}
-                onMouseDown={(e) => {}}
+              y={a.y * zoom}
-                setResize={null}
+              width={a.width > 0 ? a.width * zoom : 0}
-                initCoords={null}
+              height={a.height > 0 ? a.height * zoom : 0}
-                setInitCoords={null}
+            >
-                zoom={null}
+              <div
-              ></Area>
+                className={`border border-slate-400 w-full h-full rounded-sm relative`}
-            ))} */}
+              >
-          {diagram.tables.map((table, i) => {
+                <div
+                  className="opacity-40 w-fill h-full"
+                  style={{ backgroundColor: a.color }}
+                />
+              </div>
+              <div className="text-color absolute top-[4px] left-[6px] select-none text-[4px]">
+                {a.name}
+              </div>
+            </foreignObject>
+          ))}
+          {diagram.tables?.map((table, i) => {
             const height = table.fields.length * 36 + 50 + 7;
             return (
               <foreignObject
-                x={table.x * 0.3}
+                x={table.x * zoom}
-                y={table.y * 0.3}
+                y={table.y * zoom}
-                width={200 * 0.3}
+                width={200 * zoom}
-                height={height * 0.3}
+                height={height * zoom}
                 key={i}
               >
                 <div className="border-[1px] rounded-[3px] border-zinc-300 text-[4px] bg-zinc-100">
@@ -85,19 +97,58 @@ function cardCanvas(diagram) {
               </foreignObject>
             );
           })}
-          {/* 
+          {diagram.relationships?.map((e, i) => (
-            {diagram.relationships.map((e, i) => (
+            <path
-              <Relationship key={i} data={e} />
+              d={calcPath(e.startX, e.endX, e.startY, e.endY, zoom)}
+              fill="none"
+              strokeWidth={1}
+              stroke="gray"
+            />
           ))}
-            {diagram.notes.map((n) => (
+          {diagram.notes?.map((n) => {
-              <Note
+            const x = n.x * zoom;
-                key={n.id}
+            const y = n.y * zoom;
-                data={n}
+            const w = 180 * zoom;
-                onMouseDown={(e) =>
+            const r = 3 * zoom;
-                  {}
+            const fold = 24 * zoom;
-                }
+            const h = n.height * zoom;
-              ></Note>
+            return (
-            ))} */}
+              <g>
+                <path
+                  d={`M${x + fold} ${y} L${x + w - r} ${y} A${r} ${r} 0 0 1 ${
+                    x + w
+                  } ${y + r} L${x + w} ${y + h - r} A${r} ${r} 0 0 1 ${
+                    x + w - r
+                  } ${y + h} L${x + r} ${y + h} A${r} ${r} 0 0 1 ${x} ${
+                    y + h - r
+                  } L${x} ${y + fold}`}
+                  fill={n.color}
+                  stroke="rgb(168 162 158)"
+                  strokeLinejoin="round"
+                  strokeWidth="0.5"
+                />
+                <path
+                  d={`M${x} ${y + fold} L${x + fold - r} ${
+                    y + fold
+                  } A${r} ${r} 0 0 0 ${x + fold} ${y + fold - r} L${
+                    x + fold
+                  } ${y} L${x} ${y + fold} Z`}
+                  fill={n.color}
+                  stroke={"rgb(168 162 158)"}
+                  strokeLinejoin="round"
+                  strokeWidth="0.5"
+                />
+                <foreignObject x={x} y={y} width={w} height={h}>
+                  <div className="text-gray-900 w-full h-full px-[4px] py-[2px] text-[4px]">
+                    <label htmlFor={`note_${n.id}`} className="ms-[6px]">
+                      {n.title}
+                    </label>
+                    <div className="text-[4px] mt-[2px]">{n.content}</div>
+                  </div>
+                </foreignObject>
+              </g>
+            );
+          })}
         </g>
       </svg>
     </div>
@@ -149,7 +200,7 @@ export default function Templates() {
                   key={i}
                   className="p-4 bg-gray-200 hover:translate-y-[-6px] transition-all duration-300"
                 >
-                  {cardCanvas(t)}
+                  <Thumbnail diagram={t} />
                   <div>{t.title}</div>
                   <div>{t.description}</div>
                 </div>

src/utils/index.js

@@ -605,6 +605,92 @@ function validateDiagram(diagram) {
   return issues;
 }
 
+const calcPath = (x1, x2, y1, y2, zoom = 1) => {
+  x1 *= zoom;
+  x2 *= zoom;
+  y1 *= zoom;
+  y2 *= zoom;
+  let r = 16 * zoom;
+  const offsetX = 8 * zoom;
+  const tableWidth = 200 * zoom;
+  const midX = (x2 + x1 + tableWidth) / 2;
+  const endX = x2 + tableWidth < x1 ? x2 + tableWidth - offsetX * 2 : x2;
+
+  if (Math.abs(y1 - y2) <= 36 * zoom) {
+    r = Math.abs(y2 - y1) / 3;
+    if (r <= 2) {
+      if (x1 + tableWidth <= x2)
+        return `M ${x1 + tableWidth - 2 * offsetX} ${y1} L ${x2 + 0.1} ${
+          y2 + 0.1
+        }`;
+      else if (x2 + tableWidth < x1)
+        return `M ${x2 + tableWidth - 2 * offsetX} ${y2} L ${x1 + 0.1} ${
+          y1 + 0.1
+        }`;
+    }
+  }
+
+  if (y1 <= y2) {
+    if (x1 + tableWidth <= x2) {
+      return `M ${x1 + tableWidth - offsetX * 2} ${y1} L ${
+        midX - r
+      } ${y1} A ${r} ${r} 0 0 1 ${midX} ${y1 + r} L ${midX} ${
+        y2 - r
+      } A ${r} ${r} 0 0 0 ${midX + r} ${y2} L ${endX} ${y2}`;
+    } else if (x2 <= x1 + tableWidth && x1 <= x2) {
+      return `M ${x1 + tableWidth - 2 * offsetX} ${y1} L ${
+        x2 + tableWidth
+      } ${y1} A ${r} ${r} 0 0 1 ${x2 + tableWidth + r} ${y1 + r} L ${
+        x2 + tableWidth + r
+      } ${y2 - r} A ${r} ${r} 0 0 1 ${x2 + tableWidth} ${y2} L ${
+        x2 + tableWidth - 2 * offsetX
+      } ${y2}`;
+    } else if (x2 + tableWidth >= x1 && x2 + tableWidth <= x1 + tableWidth) {
+      return `M ${x1} ${y1} L ${x2 - r} ${y1} A ${r} ${r} 0 0 ${0} ${
+        x2 - r - r
+      } ${y1 + r} L ${x2 - r - r} ${y2 - r} A ${r} ${r} 0 0 0 ${
+        x2 - r
+      } ${y2} L ${x2} ${y2}`;
+    } else {
+      return `M ${x1} ${y1} L ${midX + r} ${y1} A ${r} ${r} 0 0 0 ${midX} ${
+        y1 + r
+      } L ${midX} ${y2 - r} A ${r} ${r} 0 0 1 ${
+        midX - r
+      } ${y2} L ${endX} ${y2}`;
+    }
+  } else {
+    if (x1 + tableWidth <= x2) {
+      return `M ${x1 + tableWidth - offsetX * 2} ${y1} L ${
+        midX - r
+      } ${y1} A ${r} ${r} 0 0 0 ${midX} ${y1 - r} L ${midX} ${
+        y2 + r
+      } A ${r} ${r} 0 0 1 ${midX + r} ${y2} L ${endX} ${y2}`;
+    } else if (x1 + tableWidth >= x2 && x1 + tableWidth <= x2 + tableWidth) {
+      return `M ${x1} ${y1} L ${x1 - r} ${y1} A ${r} ${r} 0 0 1 ${x1 - r - r} ${
+        y1 - r
+      } L ${x1 - r - r} ${y2 + r} A ${r} ${r} 0 0 1 ${
+        x1 - r
+      } ${y2} L ${endX} ${y2}`;
+    } else if (x1 >= x2 && x1 <= x2 + tableWidth) {
+      return `M ${x1 + tableWidth - 2 * offsetX} ${y1} L ${
+        x1 + tableWidth - 2 * offsetX + r
+      } ${y1} A ${r} ${r} 0 0 0 ${x1 + tableWidth - 2 * offsetX + r + r} ${
+        y1 - r
+      } L ${x1 + tableWidth - 2 * offsetX + r + r} ${
+        y2 + r
+      } A ${r} ${r} 0 0 0 ${x1 + tableWidth - 2 * offsetX + r} ${y2} L ${
+        x2 + tableWidth - 2 * offsetX
+      } ${y2}`;
+    } else {
+      return `M ${x1} ${y1} L ${midX + r} ${y1} A ${r} ${r} 0 0 1 ${midX} ${
+        y1 - r
+      } L ${midX} ${y2 + r} A ${r} ${r} 0 0 0 ${
+        midX - r
+      } ${y2} L ${endX} ${y2}`;
+    }
+  }
+};
+
 export {
   enterFullscreen,
   exitFullscreen,
@@ -620,4 +706,5 @@ export {
   hasPrecision,
   validateDateStr,
   hasCheck,
+  calcPath,
 };