minimap (#4520)

Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: Christian Byrne <cbyrne@comfy.org>

src/components/graph/MiniMap.vue

@@ -0,0 +1,88 @@
+<template>
+  <div
+    v-if="visible && initialized"
+    ref="containerRef"
+    class="litegraph-minimap absolute bottom-[20px] right-[90px] z-[1000]"
+    :style="containerStyles"
+    @mousedown="handleMouseDown"
+    @mousemove="handleMouseMove"
+    @mouseup="handleMouseUp"
+    @mouseleave="handleMouseUp"
+    @wheel="handleWheel"
+  >
+    <canvas
+      ref="canvasRef"
+      :width="width"
+      :height="height"
+      class="minimap-canvas"
+    />
+    <div class="minimap-viewport" :style="viewportStyles" />
+  </div>
+</template>
+
+<script setup lang="ts">
+import { onMounted, onUnmounted, watch } from 'vue'
+
+import { useMinimap } from '@/composables/useMinimap'
+import { useCanvasStore } from '@/stores/graphStore'
+
+const minimap = useMinimap()
+const canvasStore = useCanvasStore()
+
+const {
+  initialized,
+  visible,
+  containerRef,
+  canvasRef,
+  containerStyles,
+  viewportStyles,
+  width,
+  height,
+  init,
+  destroy,
+  handleMouseDown,
+  handleMouseMove,
+  handleMouseUp,
+  handleWheel
+} = minimap
+
+watch(
+  () => canvasStore.canvas,
+  async (canvas) => {
+    if (canvas && !initialized.value) {
+      await init()
+    }
+  },
+  { immediate: true }
+)
+
+onMounted(async () => {
+  if (canvasStore.canvas) {
+    await init()
+  }
+})
+
+onUnmounted(() => {
+  destroy()
+})
+</script>
+
+<style scoped>
+.litegraph-minimap {
+  overflow: hidden;
+}
+
+.minimap-canvas {
+  display: block;
+  width: 100%;
+  height: 100%;
+  pointer-events: none;
+}
+
+.minimap-viewport {
+  position: absolute;
+  top: 0;
+  left: 0;
+  pointer-events: none;
+}
+</style>