From 9c7535fb283ef5c7976efcf84144c8989c6e79a0 Mon Sep 17 00:00:00 2001
From: juetan <contact@juetan.cn>
Date: Sat, 21 Oct 2023 21:43:43 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E7=BC=96=E8=BE=91=E5=99=A8=E6=B7=BB?=
 =?UTF-8?q?=E5=8A=A0=E8=BE=85=E5=8A=A9=E7=BA=BF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../editor/components/DragResizer.vue         |   6 +-
 src/components/editor/components/mock.ts      |   1 -
 src/components/editor/config/context.ts       |   5 +
 src/components/editor/config/index.ts         |  10 +-
 src/components/editor/config/ref-line.ts      | 250 ++++++++++++++++++
 src/components/editor/config/util.ts          |  35 +++
 src/components/editor/index.vue               |   8 +-
 .../editor/panel-main/components/block.vue    |  59 ++++-
 src/components/editor/panel-main/index.vue    |  45 +++-
 src/components/editor/preview/index.vue       |   2 +
 10 files changed, 404 insertions(+), 17 deletions(-)
 create mode 100644 src/components/editor/config/ref-line.ts
 create mode 100644 src/components/editor/config/util.ts

diff --git a/src/components/editor/components/DragResizer.vue b/src/components/editor/components/DragResizer.vue
index 20ccae9..ff9e4ca 100644
--- a/src/components/editor/components/DragResizer.vue
+++ b/src/components/editor/components/DragResizer.vue
@@ -2,7 +2,11 @@
 <template>
   <div
     class="vdr"
-    :style="positionStyle"
+    :style="{
+      top: rect.top + 'px',
+      left: rect.left + 'px',
+      zIndex: zIndex,
+    }"
     :class="`${active || isActive ? 'active' : 'inactive'} ${contentClass ? contentClass : ''}`"
     @mousedown="bodyDown($event)"
     @touchstart="bodyDown($event)"
diff --git a/src/components/editor/components/mock.ts b/src/components/editor/components/mock.ts
index b291da2..8f0dba3 100644
--- a/src/components/editor/components/mock.ts
+++ b/src/components/editor/components/mock.ts
@@ -13,7 +13,6 @@ interface MockParams {
 
 export const mockLoad = async (params: MockParams) => {
   const { page, size } = params;
-  await sleep(1000);
   const counts = Array(15).fill(9);
   const data = counts.map((v, i) => {
     return {
diff --git a/src/components/editor/config/context.ts b/src/components/editor/config/context.ts
index 332fc85..769f651 100644
--- a/src/components/editor/config/context.ts
+++ b/src/components/editor/config/context.ts
@@ -1,6 +1,7 @@
 import { InjectionKey, Ref } from "vue";
 import { Block } from "./block";
 import { Container } from "./container";
+import { ReferenceLine } from "./ref-line";
 
 export interface Current {
   block: Block | null;
@@ -20,6 +21,10 @@ export interface Context {
    * 画布配置
    */
   container: Ref<Container>;
+  /**
+   * 参考线
+   */
+  refLine: ReferenceLine;
   /**
    * 设置当前组件
    * @param block 组件
diff --git a/src/components/editor/config/index.ts b/src/components/editor/config/index.ts
index 8a0cef9..4973e54 100644
--- a/src/components/editor/config/index.ts
+++ b/src/components/editor/config/index.ts
@@ -1,4 +1,6 @@
-export * from './block';
-export * from './blocker';
-export * from './container';
-export * from './context';
\ No newline at end of file
+export * from "./block";
+export * from "./blocker";
+export * from "./container";
+export * from "./context";
+export * from "./ref-line";
+
diff --git a/src/components/editor/config/ref-line.ts b/src/components/editor/config/ref-line.ts
new file mode 100644
index 0000000..a54533a
--- /dev/null
+++ b/src/components/editor/config/ref-line.ts
@@ -0,0 +1,250 @@
+import { Ref } from "vue";
+import { Block } from "./block";
+import { Current } from "./context";
+import { getClosestValInSortedArr } from "./util";
+
+export interface DragRect {
+  left: number;
+  top: number;
+  width: number;
+  height: number;
+}
+
+/**
+ * 参考线管理
+ */
+export class ReferenceLine {
+  private xYsMap = new Map<number, number[]>();
+  private yXsMap = new Map<number, number[]>();
+  private sortedXs: number[] = [];
+  private sortedYs: number[] = [];
+  private xLines: { y: number; xs: number[] }[] = [];
+  private yLines: { x: number; ys: number[] }[] = [];
+  public active = ref(false);
+  public xl = ref<{ x: number; y: number; w: number }[]>([]);
+  public yl = ref<{ x: number; y: number; h: number }[]>([]);
+
+  constructor(private blocks: Ref<Block[]>, private current: Ref<Current>) {
+    this.updateRefLine = this.updateRefLine.bind(this);
+  }
+
+  /**
+   * 记录所有组件坐标
+   */
+  recordBlocksXY() {
+    this.clear();
+    const { xYsMap, yXsMap, blocks, current } = this;
+    for (const block of blocks.value) {
+      if (block === current.value.block) {
+        continue;
+      }
+      const { minX, minY, midX, midY, maxX, maxY } = this.getBlockBox(block);
+
+      this.addBoxToMap(xYsMap, minX, [minY, maxY]);
+      this.addBoxToMap(xYsMap, midX, [minY, maxY]);
+      this.addBoxToMap(xYsMap, maxX, [minY, maxY]);
+
+      this.addBoxToMap(yXsMap, minY, [minX, maxX]);
+      this.addBoxToMap(yXsMap, midY, [minX, maxX]);
+      this.addBoxToMap(yXsMap, maxY, [minX, maxX]);
+    }
+    this.sortedXs = Array.from(xYsMap.keys()).sort((a, b) => a - b);
+    this.sortedYs = Array.from(yXsMap.keys()).sort((a, b) => a - b);
+  }
+
+  /**
+   * 添加组件坐标
+   */
+  addBoxToMap(map: Map<number, number[]>, xOrY: number, xsOrYs: number[]) {
+    if (!map.get(xOrY)) {
+      map.set(xOrY, []);
+    }
+    map.get(xOrY)?.push(...xsOrYs);
+  }
+
+  /**
+   * 获取组件左中右坐标
+   */
+  getBlockBox(block: Block) {
+    const { x, y, w, h } = block ?? {};
+    return {
+      minX: x,
+      minY: y,
+      midX: x + w / 2,
+      midY: y + h / 2,
+      maxX: x + w,
+      maxY: y + h,
+    };
+  }
+
+  /**
+   * 获取组件左中右坐标
+   */
+  getRectBox(rect: DragRect) {
+    const { left: x, top: y, width: w, height: h } = rect;
+    return {
+      minX: x,
+      minY: y,
+      midX: x + w / 2,
+      midY: y + h / 2,
+      maxX: x + w,
+      maxY: y + h,
+    };
+  }
+
+  /**
+   * 清理数据
+   */
+  clear() {
+    this.xYsMap.clear();
+    this.yXsMap.clear();
+    this.sortedXs = [];
+    this.sortedYs = [];
+    this.xl.value = [];
+    this.yl.value = [];
+  }
+
+  /**
+   * 1. 记录参考线
+   * 2. 找出最近的参考线
+   * 3. 计算偏移距离
+   * 4. 标记参考线段
+   * 5. 更新组件坐标
+   * 6. 绘制参考线段
+   */
+  updateRefLine(rect: DragRect) {
+    this.xLines = [];
+    this.yLines = [];
+    const box = this.getRectBox(rect);
+    const { xYsMap, yXsMap, sortedXs, sortedYs } = this;
+    if (!sortedXs.length && !sortedYs.length) {
+      return { x: 0, y: 0 };
+    }
+
+    let offsetX: number | undefined = undefined;
+    let offsetY: number | undefined = undefined;
+
+    // 离最近X的距离
+    const closetMinX = getClosestValInSortedArr(sortedXs, box.minX);
+    const closetMidX = getClosestValInSortedArr(sortedXs, box.midX);
+    const closetMaxX = getClosestValInSortedArr(sortedXs, box.maxX);
+    const distMinX = Math.abs(closetMinX - box.minX);
+    const distMidX = Math.abs(closetMidX - box.midX);
+    const distMaxX = Math.abs(closetMaxX - box.maxX);
+    const closetDistX = Math.min(distMinX, distMidX, distMaxX);
+
+    // 离最近Y的距离
+    const closetMinY = getClosestValInSortedArr(sortedYs, box.minY);
+    const closetMidY = getClosestValInSortedArr(sortedYs, box.midY);
+    const closetMaxY = getClosestValInSortedArr(sortedYs, box.maxY);
+    const distMinY = Math.abs(closetMinY - box.minY);
+    const distMidY = Math.abs(closetMidY - box.midY);
+    const distMaxY = Math.abs(closetMaxY - box.maxY);
+    const closetDistY = Math.min(distMinY, distMidY, distMaxY);
+
+    const isEqualNum = (a: number, b: number) => Math.abs(a - b) < 0.00001;
+    const tol = 5 / 0.7;
+
+    if (closetDistX <= tol) {
+      if (isEqualNum(closetDistX, distMinX)) {
+        offsetX = closetMinX - box.minX;
+      } else if (isEqualNum(closetDistX, distMidX)) {
+        offsetX = closetMidX - box.midX;
+      } else if (isEqualNum(closetDistX, distMaxX)) {
+        offsetX = closetMaxX - box.maxX;
+      } else {
+        throw new Error("un");
+      }
+    }
+
+    if (closetDistY <= tol) {
+      if (isEqualNum(closetDistY, distMinY)) {
+        offsetY = closetMinY - box.minY;
+      } else if (isEqualNum(closetDistY, distMidY)) {
+        offsetY = closetMidY - box.midY;
+      } else if (isEqualNum(closetDistY, distMaxY)) {
+        offsetY = closetMaxY - box.maxY;
+      } else {
+        throw new Error("un");
+      }
+    }
+
+    const targetBox = { ...box };
+
+    if (offsetX !== undefined) {
+      targetBox.minX += offsetX;
+      targetBox.midX += offsetX;
+      targetBox.maxX += offsetX;
+    }
+
+    if (offsetY !== undefined) {
+      targetBox.minY += offsetY;
+      targetBox.midY += offsetY;
+      targetBox.maxY += offsetY;
+    }
+
+    if (offsetX !== undefined) {
+      if (isEqualNum(0, closetMinX - targetBox.minX)) {
+        this.yLines.push({
+          x: closetMinX,
+          ys: [targetBox.minY, targetBox.maxY, ...(xYsMap.get(closetMinX) ?? [])],
+        });
+      }
+      if (isEqualNum(0, closetMidX - targetBox.midX)) {
+        this.yLines.push({
+          x: closetMidX,
+          ys: [targetBox.midX, ...(xYsMap.get(closetMidX) ?? [])],
+        });
+      }
+      if (isEqualNum(0, closetMaxX - targetBox.maxX)) {
+        this.yLines.push({
+          x: closetMaxX,
+          ys: [targetBox.minY, targetBox.maxY, ...(xYsMap.get(closetMaxX) ?? [])],
+        });
+      }
+    }
+
+    if (offsetY !== undefined) {
+      if (isEqualNum(0, closetMinY - targetBox.minY)) {
+        this.xLines.push({
+          y: closetMinY,
+          xs: [targetBox.minX, targetBox.maxX, ...(yXsMap.get(closetMinY) ?? [])],
+        });
+      }
+      if (isEqualNum(0, closetMidY - targetBox.midY)) {
+        this.xLines.push({
+          y: closetMidY,
+          xs: [targetBox.midX, ...(yXsMap.get(closetMidY) ?? [])],
+        });
+      }
+      if (isEqualNum(0, closetMaxY - targetBox.maxY)) {
+        this.xLines.push({
+          y: closetMaxY,
+          xs: [targetBox.minX, targetBox.maxX, ...(yXsMap.get(closetMaxY) ?? [])],
+        });
+      }
+    }
+
+    const yl: any[] = [];
+    for (const line of this.yLines) {
+      const y = Math.min(...line.ys);
+      const h = Math.max(...line.ys) - y;
+      yl.push({ x: line.x, y, h });
+    }
+
+    const xl: any[] = [];
+    for (const line of this.xLines) {
+      const x = Math.min(...line.xs);
+      const w = Math.max(...line.xs) - x;
+      xl.push({ y: line.y, x, w });
+    }
+
+    this.yl.value = yl;
+    this.xl.value = xl;
+
+    return {
+      x: offsetX,
+      y: offsetY,
+    };
+  }
+}
diff --git a/src/components/editor/config/util.ts b/src/components/editor/config/util.ts
new file mode 100644
index 0000000..7b61b43
--- /dev/null
+++ b/src/components/editor/config/util.ts
@@ -0,0 +1,35 @@
+/**
+ * 找出数组中最近的元素
+ */
+export function getClosestValInSortedArr(sortedArr: number[], target: number) {
+  if (sortedArr.length === 0) {
+    throw new Error("sortedArr can not be empty");
+  }
+  if (sortedArr.length === 1) {
+    return sortedArr[0];
+  }
+
+  let left = 0;
+  let right = sortedArr.length - 1;
+
+  while (left <= right) {
+    const mid = Math.floor((left + right) / 2);
+
+    if (sortedArr[mid] === target) {
+      return sortedArr[mid];
+    } else if (sortedArr[mid] < target) {
+      left = mid + 1;
+    } else {
+      right = mid - 1;
+    }
+  }
+
+  if (left >= sortedArr.length) {
+    return sortedArr[right];
+  }
+  if (right < 0) {
+    return sortedArr[left];
+  }
+
+  return Math.abs(sortedArr[right] - target) <= Math.abs(sortedArr[left] - target) ? sortedArr[right] : sortedArr[left];
+}
diff --git a/src/components/editor/index.vue b/src/components/editor/index.vue
index 3a29206..d3efb3a 100644
--- a/src/components/editor/index.vue
+++ b/src/components/editor/index.vue
@@ -21,7 +21,7 @@
 </template>
 
 <script setup lang="ts">
-import { Block, Container, ContextKey } from "./config";
+import { Block, Container, ContextKey, ReferenceLine } from "./config";
 import PanelHeader from "./panel-header/index.vue";
 import PanelLeft from "./panel-left/index.vue";
 import PanelMain from "./panel-main/index.vue";
@@ -43,6 +43,11 @@ const current = ref({
  */
 const blocks = ref<Block[]>([]);
 
+/**
+ * 参考线
+ */
+const refLine = new ReferenceLine(blocks, current);
+
 /**
  * 画布容器
  */
@@ -127,6 +132,7 @@ provide(ContextKey, {
   current,
   container,
   blocks,
+  refLine,
   setCurrentBlock,
   setContainerOrigin,
   loadData,
diff --git a/src/components/editor/panel-main/components/block.vue b/src/components/editor/panel-main/components/block.vue
index f2743fe..1e1f5a0 100644
--- a/src/components/editor/panel-main/components/block.vue
+++ b/src/components/editor/panel-main/components/block.vue
@@ -14,9 +14,11 @@
     :isResizable="data.resizable"
     :style="blockStyle"
     :class="'resizer'"
-    @dragging="onItemDragOrResize"
-    @resizing="onItemDragOrResize"
-    @activated="setCurrentBlock(data)"
+    @dragging="onItemDragging"
+    @resizing="onItemResizing"
+    @activated="onItemActivated(data)"
+    @mousedown="onItemMouseDown"
+    @mouseup="onItemMouseup"
   >
     <component :is="BlockerMap[data.type].render" :data="data" />
   </drag-resizer>
@@ -39,8 +41,11 @@ const props = defineProps({
   },
 });
 
-const { setCurrentBlock } = inject(ContextKey)!;
+const { setCurrentBlock, refLine } = inject(ContextKey)!;
 
+/**
+ * 组件样式
+ */
 const blockStyle = computed(() => {
   const { bgColor, bgImage } = props.data;
   return {
@@ -50,12 +55,52 @@ const blockStyle = computed(() => {
   };
 });
 
-const onItemDragOrResize = (rect: any) => {
+/**
+ * 拖拽组件
+ */
+const onItemDragging = (rect: any) => {
+  if (refLine.active.value) {
+    const { x = 0, y = 0 } = refLine.updateRefLine(rect);
+    rect.left += x;
+    rect.top += y;
+  }
   props.data.x = rect.left;
   props.data.y = rect.top;
   props.data.w = rect.width;
   props.data.h = rect.height;
 };
+
+/**
+ * 拉伸组件
+ */
+const onItemResizing = (rect: any) => {
+  props.data.x = rect.left;
+  props.data.y = rect.top;
+  props.data.w = rect.width;
+  props.data.h = rect.height;
+};
+
+/**
+ * 按下鼠标
+ */
+const onItemMouseDown = () => {
+  refLine.active.value = true;
+};
+
+/**
+ * 激活组件
+ */
+const onItemActivated = (block: Block) => {
+  setCurrentBlock(block);
+  refLine.recordBlocksXY();
+};
+
+/**
+ * 松开鼠标
+ */
+const onItemMouseup = () => {
+  refLine.active.value = false;
+};
 </script>
 
 <style lang="less" scoped>
@@ -63,13 +108,13 @@ const onItemDragOrResize = (rect: any) => {
   outline: 1px dashed #ccc;
   &:hover {
     outline-color: rgb(var(--primary-6));
-    background-color: rgba(var(--primary-1), .5);
+    background-color: rgba(var(--primary-1), 0.5);
   }
   &.active {
     &::before {
       outline-style: solid;
       outline-color: rgb(var(--primary-6));
-      background-color: rgba(var(--primary-1), .5);
+      background-color: rgba(var(--primary-1), 0.5);
     }
   }
   ::v-deep .vdr-stick {
diff --git a/src/components/editor/panel-main/index.vue b/src/components/editor/panel-main/index.vue
index 257e59c..b4f9fbb 100644
--- a/src/components/editor/panel-main/index.vue
+++ b/src/components/editor/panel-main/index.vue
@@ -4,7 +4,9 @@
       <ani-header :container="container"></ani-header>
     </div>
     <div class="h-full w-full overflow-hidden p-4">
-      <div class="juetan-editor-container w-full h-full flex items-center justify-center overflow-hidden relative bg-slate-50">
+      <div
+        class="juetan-editor-container w-full h-full flex items-center justify-center overflow-hidden relative bg-slate-50"
+      >
         <div
           class="relative"
           :style="containerStyle"
@@ -16,6 +18,32 @@
           @mousemove="onMouseMove"
         >
           <ani-block v-for="block in blocks" :key="block.id" :data="block" :container="container"></ani-block>
+          <template v-if="refLine.active.value">
+            <div
+              v-for="line in refLine.xl.value"
+              :key="line.y"
+              :style="{
+                position: 'absolute',
+                left: `${line.x}px`,
+                top: `${line.y}px`,
+                width: `${line.w}px`,
+                height: '1px',
+                backgroundColor: 'red',
+              }"
+            ></div>
+            <div
+              v-for="line in refLine.yl.value"
+              :key="line.x"
+              :style="{
+                position: 'absolute',
+                left: `${line.x}px`,
+                top: `${line.y}px`,
+                width: '1px',
+                height: `${line.h}px`,
+                backgroundColor: 'red',
+              }"
+            ></div>
+          </template>
         </div>
       </div>
     </div>
@@ -30,7 +58,7 @@ import { ContextKey } from "../config";
 import AniBlock from "./components/block.vue";
 import AniHeader from "./components/header.vue";
 
-const { blocks, container, setCurrentBlock } = inject(ContextKey)!;
+const { blocks, container, refLine, setCurrentBlock } = inject(ContextKey)!;
 
 /**
  * 清空当前组件
@@ -162,6 +190,17 @@ const onMouseWheel = (e: WheelEvent) => {
 
 <style scoped>
 .juetan-editor-container {
-  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAIAAADZF8uwAAAAGUlEQVQYV2M4gwH+YwCGIasIUwhT25BVBADtzYNYrHvv4gAAAABJRU5ErkJggg==);
+  --color: rgba(0, 0, 0, 0.2);
+  background: linear-gradient(
+      45deg,
+      var(--color) 25%,
+      transparent 25%,
+      transparent 75%,
+      var(--color) 75%,
+      var(--color) 100%
+    ),
+    linear-gradient(45deg, var(--color) 25%, transparent 25%, transparent 75%, var(--color) 75%, var(--color) 100%);
+  background-size: 20px 20px;
+  background-position: 0 0, 10px 10px;
 }
 </style>
diff --git a/src/components/editor/preview/index.vue b/src/components/editor/preview/index.vue
index 0242e01..858529c 100644
--- a/src/components/editor/preview/index.vue
+++ b/src/components/editor/preview/index.vue
@@ -5,6 +5,7 @@
         v-if="visible"
         :style="{
           position: 'relative',
+          overflow: 'hidden',
           width: `${container.width}px`,
           height: `${container.height}px`,
           backgroundImage: `url(${container.bgImage})`,
@@ -17,6 +18,7 @@
           :key="block.id"
           :style="{
             position: 'absolute',
+            overflow: 'hidden',
             left: `${block.x}px`,
             top: `${block.y}px`,
             width: `${block.w}px`,