From 56e5aad22f71fdac2aded36edf877c72b4da212a Mon Sep 17 00:00:00 2001
From: Zhukj <3262118957>
Date: Fri, 17 Apr 2026 14:29:03 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BC=98=E5=8C=96=E5=8F=A0=E5=8A=A0?=
 =?UTF-8?q?=E5=9B=BE=E5=B1=82=E7=BA=A7=E5=85=B3=E7=B3=BB=E4=B8=8E=E9=80=89?=
 =?UTF-8?q?=E4=B8=AD=E5=A4=B1=E7=84=A6=E9=80=BB=E8=BE=91?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md     |  2 +-
 css/style.css |  7 ++++--
 index.html    |  4 +--
 js/script.js  | 70 +++++++++++++++++++++++++++++++++++++++++++++------
 4 files changed, 70 insertions(+), 13 deletions(-)

diff --git a/README.md b/README.md
index 6d0b84c..a9810d3 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@
 13. 顶部工具栏下方16px的位置，固定放置文本编辑器工具栏，加粗，斜体，字体颜色，字体，字号，可编辑文字样式
 14. 字号逻辑调整，输入框字号只在自身原本字号上增减
 15. 文本输入框添加辅助线，完善辅助线的吸附逻辑更加精准，辅助线颜色为红色
-16. 
+16. 顶部工具栏新增层叠图，可添加多张层叠图，单击选中状态可缩放删除自由移动位置，置于背景图之上，输入框与层叠图点击只能同时选中一个
 
 
 
diff --git a/css/style.css b/css/style.css
index 2fcdb24..2ad4c6d 100644
--- a/css/style.css
+++ b/css/style.css
@@ -222,14 +222,15 @@ html, body {
     overflow: hidden;
 }
 
-/* 层叠图层 - 位于背景图之上、文字之下 */
+/* 层叠图层 - 位于背景图之上、文字之下、提示文字之上 */
 .overlay-layer {
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
-    pointer-events: none;
+    pointer-events: auto;
+    z-index: 6;
 }
 
 .overlay-layer .overlay-image {
@@ -282,11 +283,13 @@ html, body {
     width: 100%;
     height: 100%;
     pointer-events: none;
+    z-index: 7;
 }
 
 /* 输入框可交互 */
 .preview-input-layer .text-input {
     pointer-events: auto;
+    z-index: 8;
 }
 
 /* 背景图 - 保持比例，可滑动调整位置 */
diff --git a/index.html b/index.html
index f612664..e608ee1 100644
--- a/index.html
+++ b/index.html
@@ -48,8 +48,6 @@
         <!-- 图片展示区 -->
         <div class="canvas-area" id="canvasArea">
             <div class="preview image-container empty" id="imageContainer">
-                <!-- 提示文字移到预览白板中 -->
-                <div class="empty-tip" id="emptyTip">请点击上方「添加图片」按钮上传背景图</div>
                 <!-- 背景图层 -->
                 <div class="preview-bg-layer" id="bgLayer">
                     <img id="bgImage" src="" alt="背景图">
@@ -66,6 +64,8 @@
                     <!-- 文字输入框2 - 右下角 -->
                     <div class="text-input" id="input2" contenteditable="false" style="left: 5%; top: 90%;">编号：</div>
                 </div>
+                <!-- 提示文字（最上层，层叠图之下） -->
+                <div class="empty-tip" id="emptyTip">请点击上方「添加图片」按钮上传背景图</div>
             </div>
         </div>
 
diff --git a/js/script.js b/js/script.js
index 15bf2d5..8f98eed 100644
--- a/js/script.js
+++ b/js/script.js
@@ -405,23 +405,29 @@
         });
     }
 
-    // 选中层叠图
+    // 选中层叠图（同时取消输入框选中）
     let selectedOverlay = null;
     function selectOverlay(overlayEl) {
-        if (selectedOverlay) {
+        if (selectedInput) {
+            selectedInput.classList.remove('selected');
+            selectedInput = null;
+        }
+        if (editingInput) {
+            endEdit(editingInput);
+        }
+        if (selectedOverlay && selectedOverlay !== overlayEl) {
             selectedOverlay.classList.remove('selected');
         }
         selectedOverlay = overlayEl;
         overlayEl.classList.add('selected');
     }
 
-    // 点击背景取消选中层叠图
+    // 点击背景/空白处取消选中层叠图
     imageContainer.addEventListener('click', (e) => {
-        if (e.target === imageContainer ||
-            e.target === bgLayer ||
-            e.target === bgImage ||
-            e.target === emptyTip ||
-            e.target.closest('.preview-bg-layer')) {
+        const isOverlayImage = e.target.closest('.overlay-image');
+        const isTextInput = e.target.closest('.text-input');
+
+        if (!isOverlayImage && !isTextInput) {
             if (selectedOverlay) {
                 selectedOverlay.classList.remove('selected');
                 selectedOverlay = null;
@@ -732,6 +738,10 @@
 
     // 选中输入框
     function selectInput(element) {
+        if (selectedOverlay) {
+            selectedOverlay.classList.remove('selected');
+            selectedOverlay = null;
+        }
         if (editingInput && editingInput !== element) {
             endEdit(editingInput);
         }
@@ -1404,6 +1414,9 @@
             drawImageWithOffset(ctx, currentImage, containerWidth, containerHeight);
         }
 
+        // 绘制层叠图（等待图片加载完成）
+        await drawOverlayImages(ctx);
+
         // 绘制文字
         drawTextOnCanvas(ctx, input1);
         drawTextOnCanvas(ctx, input2);
@@ -1411,6 +1424,47 @@
         return canvas;
     }
 
+    // 绘制层叠图
+    function drawOverlayImages(ctx) {
+        return new Promise((resolve) => {
+            const overlayImages = overlayLayer.querySelectorAll('.overlay-image');
+            if (overlayImages.length === 0) {
+                resolve();
+                return;
+            }
+
+            let loadedCount = 0;
+            overlayImages.forEach(overlayEl => {
+                const imgEl = overlayEl.querySelector('img');
+                if (!imgEl) {
+                    loadedCount++;
+                    return;
+                }
+
+                const left = overlayEl.offsetLeft;
+                const top = overlayEl.offsetTop;
+                const width = overlayEl.offsetWidth;
+                const height = overlayEl.offsetHeight;
+
+                const img = new Image();
+                img.onload = () => {
+                    ctx.drawImage(img, left, top, width, height);
+                    loadedCount++;
+                    if (loadedCount >= overlayImages.length) {
+                        resolve();
+                    }
+                };
+                img.onerror = () => {
+                    loadedCount++;
+                    if (loadedCount >= overlayImages.length) {
+                        resolve();
+                    }
+                };
+                img.src = imgEl.src;
+            });
+        });
+    }
+
     // 绘制图片（考虑滑动偏移）
     function drawImageWithOffset(ctx, img, containerWidth, containerHeight) {
         const imgRatio = img.naturalWidth / img.naturalHeight;