From 770ec675bfedadfa4de472118a26ebd155e2ca3f Mon Sep 17 00:00:00 2001
From: mvdbeek <m.vandenbeek@gmail.com>
Date: Tue, 13 Sep 2022 11:46:53 +0200
Subject: [PATCH] Switch to composables for Minimap.vue

---
 .../components/Workflow/Editor/Minimap.vue    | 138 ++++++++++++------
 .../src/components/Workflow/Editor/Node.vue   |   4 +-
 .../Workflow/Editor/WorkflowGraph.vue         |  18 ++-
 client/src/style/scss/workflow.scss           |   3 +
 4 files changed, 118 insertions(+), 45 deletions(-)

diff --git a/client/src/components/Workflow/Editor/Minimap.vue b/client/src/components/Workflow/Editor/Minimap.vue
index 92f6d6a28c3..1089566659e 100644
--- a/client/src/components/Workflow/Editor/Minimap.vue
+++ b/client/src/components/Workflow/Editor/Minimap.vue
@@ -1,7 +1,7 @@
 <template>
     <div ref="overview" class="workflow-overview" :style="style" aria-hidden="true">
         <div class="workflow-overview-body">
-            <svg width="100%" height="100%" :viewBox="viewBox" @click="onClick">
+            <svg width="100%" height="100%" :viewBox="viewBox">
                 <MinimapNode
                     class="mini-node"
                     :node="node"
@@ -9,11 +9,15 @@
                     v-for="node of Object.values(nodes)"
                     :key="node.id" />
                 <rect
-                    class="mini-node"
+                    class="viewport"
+                    ref="rect"
                     :x="visible.x"
                     :y="visible.y"
                     :width="visible.width"
                     :height="visible.height"
+                    stroke-width="1%"
+                    rx="1%"
+                    fill="white"
                     fill-opacity="0.5" />
             </svg>
         </div>
@@ -22,14 +26,89 @@
 <script>
 import MinimapNode from "./MinimapNode.vue";
 import Draggable from "./Draggable.vue";
-import { reactive, ref } from "vue";
+import { computed, reactive, ref, watchEffect } from "vue";
 import { useDraggable } from "@vueuse/core";
 
 export default {
-    setup() {
+    setup(props, { emit }) {
         const overview = ref(null);
-        const overviewPosition = reactive(useDraggable(overview, { preventDefault: true }));
-        return { overview, overviewPosition };
+        const overviewPosition = reactive(useDraggable(overview, { preventDefault: true, exact: true }));
+        const size = ref(parseInt(localStorage.getItem("overview-size")) || 150);
+        const visible = computed(() => {
+            const x = props.pan.x / -props.scale;
+            const y = props.pan.y / -props.scale;
+            const width = props.rootOffset.width / props.scale;
+            const height = props.rootOffset.bottom / props.scale;
+            const rval = { x, y, width, height };
+            return rval;
+        });
+        const bounds = computed(() => {
+            let left = props.pan.x * -1;
+            let right = props.rootOffset.width;
+            let top = props.pan.y * -1;
+            let bottom = props.rootOffset.bottom;
+            let p;
+            Object.values(props.steps).forEach((step) => {
+                const node = props.nodes[step.id];
+                p = node.position;
+                left = Math.min(left, step.position.left);
+                right = Math.max(right, p.right);
+                top = Math.min(top, step.position.top);
+                bottom = Math.max(bottom, p.bottom);
+            });
+
+            return {
+                left: left / props.scale,
+                right: right / props.scale,
+                top: top / props.scale,
+                bottom: bottom / props.scale,
+            };
+        });
+        const scaleFactorX = computed(() => {
+            return (bounds.value.right - bounds.value.left) / size.value;
+        });
+        const scaleFactorY = computed(() => {
+            return (bounds.value.bottom - bounds.value.top) / size.value;
+        });
+        const rect = ref(null);
+        let startX = null;
+        let startY = null;
+        const rectPosition = reactive(
+            useDraggable(rect, {
+                preventDefault: true,
+                onStart: (position, event) => {
+                    event.stopPropagation();
+                    startX = event.clientX;
+                    startY = event.clientY;
+                },
+                onMove: (position, event) => {
+                    const offsetX = event.clientX - startX;
+                    const offsetY = event.clientY - startY;
+                    console.log("panX", props.pan.x - offsetX * scaleFactorX.value);
+                    console.log("panY", props.pan.y - offsetY * scaleFactorY.value);
+                    emit("pan-by", { x: -offsetX * scaleFactorX.value, y: -offsetY * scaleFactorY.value });
+                    startX = event.clientX;
+                    startY = event.clientY;
+                },
+                // onEnd: (position, event) => {
+                //     startX = null;
+                //     startY = null;
+                // },
+            })
+        );
+        return {
+            overview,
+            overviewPosition,
+            rect,
+            rectPosition,
+            size,
+            visible,
+            bounds,
+            scaleFactorX,
+            scaleFactorY,
+            startX,
+            startY,
+        };
     },
     components: {
         Draggable,
@@ -37,7 +116,6 @@ export default {
     },
     data() {
         return {
-            size: 150,
             maxSize: 300,
             minSize: 50,
         };
@@ -73,9 +151,6 @@ export default {
             type: Object,
         },
     },
-    created() {
-        this.size = parseInt(localStorage.getItem("overview-size")) || this.size;
-    },
     computed: {
         style() {
             if (this.overviewPosition.x) {
@@ -95,44 +170,23 @@ export default {
             }
             return { width: `${this.size}px`, height: `${this.size}px` };
         },
-        visible() {
-            // translate current rootOffset rectangle into scaled and panned space
-            const x = this.pan.x / -this.scale;
-            const y = this.pan.y / -this.scale;
-            const width = this.rootOffset.width / this.scale;
-            const height = this.rootOffset.bottom / this.scale;
-            const rval = { x, y, width, height };
-            return rval;
-        },
-        bounds() {
-            let left = this.pan.x * -1;
-            let right = this.rootOffset.width;
-            let top = this.pan.y * -1;
-            let bottom = this.rootOffset.bottom;
-            let p;
-            Object.values(this.steps).forEach((step) => {
-                const node = this.nodes[step.id];
-                p = node.position;
-                left = Math.min(left, step.position.left);
-                right = Math.max(right, p.right);
-                top = Math.min(top, step.position.top);
-                bottom = Math.max(bottom, p.bottom);
-            });
-
-            return {
-                left: left / this.scale,
-                right: right / this.scale,
-                top: top / this.scale,
-                bottom: bottom / this.scale,
-            };
-        },
         viewBox() {
             return `${this.bounds.left} ${this.bounds.top} ${this.bounds.right} ${this.bounds.bottom}`;
         },
     },
     methods: {
         onClick(e) {
-            console.log("got click", e);
+            console.log("panX", this.pan.x - offsetX * this.scaleFactorX);
+            console.log("panY", this.pan.y - offsetY * this.scaleFactorY);
+            // console.log("got click", e);
+            // const scaledOffsetX = e.offsetX * this.scaleFactorX;
+            // const scaledOffsetY = e.offsetY * this.scaleFactorY;
+            // console.log("scaled offset", scaledOffsetX, scaledOffsetY);
+            // const x = scaledOffsetX - this.rootOffset.width / 2;
+            // const y = scaledOffsetY - this.rootOffset.height / 2;
+            // console.log("adjusted offset", x, y);
+            console.log("panX", props.pan.x - offsetX * scaleFactorX.value);
+            this.$emit("moveTo", { x: -x, y: -y });
         },
     },
 };
diff --git a/client/src/components/Workflow/Editor/Node.vue b/client/src/components/Workflow/Editor/Node.vue
index b1ce6d3c52d..b74480003f4 100644
--- a/client/src/components/Workflow/Editor/Node.vue
+++ b/client/src/components/Workflow/Editor/Node.vue
@@ -2,8 +2,8 @@
     <draggable-wrapper
         ref="el"
         @updatePosition="onUpdatePosition"
-        @mouseup="makeActive"
-        @move="onMove"
+        @mouseup.prevent="makeActive"
+        @move.prevent="onMove"
         :id="idString"
         :name="name"
         :node-label="label"
diff --git a/client/src/components/Workflow/Editor/WorkflowGraph.vue b/client/src/components/Workflow/Editor/WorkflowGraph.vue
index 48dadbeb3ad..a559982c052 100644
--- a/client/src/components/Workflow/Editor/WorkflowGraph.vue
+++ b/client/src/components/Workflow/Editor/WorkflowGraph.vue
@@ -49,7 +49,14 @@
                 </Draggable>
             </div>
         </div>
-        <Minimap :nodes="nodes" :steps="steps" :root-offset="position" :scale="zoomLevel" :pan="currentPan" />
+        <Minimap
+            :nodes="nodes"
+            :steps="steps"
+            :root-offset="position"
+            :scale="zoomLevel"
+            :pan="currentPan"
+            @pan-by="onPan"
+            @moveTo="onMoveTo" />
     </div>
 </template>
 <script>
@@ -105,6 +112,13 @@ export default {
         },
     },
     methods: {
+        onWheel(e) {
+            console.log("wheel event", e);
+        },
+        onMoveTo(moveTo) {
+            console.log("moving to", moveTo);
+            this.svgpanzoom.pan(moveTo);
+        },
         onUpdatedCTM(CTM) {
             this.transform = CTM;
         },
@@ -157,6 +171,8 @@ export default {
         currentPan() {
             if (this.transform) {
                 return { x: this.transform.e, y: this.transform.f };
+            } else {
+                return { x: 0, y: 0 };
             }
         },
         zoomLevel() {
diff --git a/client/src/style/scss/workflow.scss b/client/src/style/scss/workflow.scss
index 029fba12deb..333dd5830a7 100644
--- a/client/src/style/scss/workflow.scss
+++ b/client/src/style/scss/workflow.scss
@@ -204,6 +204,9 @@
                                     // this is $primary-brand / #25537b
                                         filter: invert(26%) sepia(75%) saturate(489%) hue-rotate(166deg) brightness(90%) contrast(89%);
                                 }
+                                                                .viewport {
+                                                                    stroke: #25537b
+                                                                }
             }
             #input-choices-menu {
                 color: black;