[FEAT] Replace img

src/components/SpriteCanvas.vue

@@ -40,10 +40,10 @@
           @touchmove="handleTouchMove"
           @touchend="stopDrag"
           @contextmenu.prevent.stop
-          @dragover="handleDragOver"
-          @dragenter="handleDragEnter"
-          @dragleave="onDragLeave"
-          @drop="handleDrop"
+          @dragover="handleGridDragOver"
+          @dragenter="handleGridDragEnter"
+          @dragleave="handleGridDragLeave"
+          @drop="handleGridDrop"
           :class="{ 'ring-4 ring-blue-500 ring-opacity-50': isDragOver }"
         >
           <!-- Grid cells -->
@@ -174,7 +174,7 @@
   import { ref, onMounted, watch, onUnmounted, toRef, computed, nextTick } from 'vue';
   import { useSettingsStore } from '@/stores/useSettingsStore';
   import type { Sprite } from '@/types/sprites';
-  import { useDragSprite } from '@/composables/useDragSprite';
+  import { useDragSprite, type CellPosition } from '@/composables/useDragSprite';
   import { useFileDrop } from '@/composables/useFileDrop';
   import { useGridMetrics } from '@/composables/useGridMetrics';
   import { useBackgroundStyles } from '@/composables/useBackgroundStyles';
@@ -204,6 +204,7 @@
     (e: 'removeSprites', ids: string[]): void;
     (e: 'replaceSprite', id: string, file: File): void;
     (e: 'addSprite', file: File, index?: number): void;
+    (e: 'addSprites', files: File[], index?: number): void;
     (e: 'addSpriteWithResize', file: File): void;
     (e: 'rotateSprite', id: string, angle: number): void;
     (e: 'flipSprite', id: string, direction: 'horizontal' | 'vertical'): void;
@@ -541,10 +542,50 @@
     }
   };
 
-  const onDragLeave = (event: DragEvent) => {
+  // Grid Drag & Drop
+  // Grid Drag & Drop
+
+  const handleGridDragEnter = (event: DragEvent) => {
+    handleDragEnter(event);
+  };
+
+  const handleGridDragOver = (event: DragEvent) => {
+    handleDragOver(event);
+  };
+
+  const handleGridDragLeave = (event: DragEvent) => {
     handleDragLeave(event, gridContainerRef.value);
   };
 
+  const handleGridDrop = (event: DragEvent) => {
+    handleDragLeave(event, gridContainerRef.value); // Reset drag over state
+    isDragOver.value = false;
+
+    if (!event.dataTransfer?.files.length) return;
+
+    // Calculate target cell immediately on drop
+    let targetCellIndex: number | undefined;
+    const pos = getMousePosition(event as unknown as MouseEvent, props.zoom);
+    if (pos) {
+      const cell = findCellAtPosition(pos.x, pos.y);
+      if (cell) {
+        targetCellIndex = cell.index;
+      }
+    }
+
+    const files = Array.from(event.dataTransfer.files).filter(file => file.type.startsWith('image/'));
+
+    if (files.length === 0) return;
+
+    if (targetCellIndex !== undefined) {
+      // Add sprites starting from the target cell index
+      emit('addSprites', files, targetCellIndex);
+    } else {
+      // Fallback to default behavior (append)
+      emit('addSprites', files);
+    }
+  };
+
   onMounted(() => {
     document.addEventListener('mouseup', stopDrag);
     document.addEventListener('keydown', handleKeyDown);

src/composables/useLayers.ts

@@ -286,6 +286,63 @@ export const useLayers = () => {
     reader.readAsDataURL(file);
   };
 
+  const addSprites = async (files: File[], index?: number) => {
+    const l = activeLayer.value;
+    if (!l) return;
+
+    const promises = files.map(file => {
+      return new Promise<Sprite>((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = e => {
+          const url = e.target?.result as string;
+          const img = new Image();
+          img.onload = () => {
+            resolve({
+              id: crypto.randomUUID(),
+              file,
+              img,
+              url,
+              width: img.width,
+              height: img.height,
+              x: 0,
+              y: 0,
+              rotation: 0,
+              flipX: false,
+              flipY: false,
+            });
+          };
+          img.onerror = () => {
+            console.error('Failed to load sprite image:', file.name);
+            reject(new Error(`Failed to load sprite image: ${file.name}`));
+          };
+          img.src = url;
+        };
+        reader.onerror = () => {
+          console.error('Failed to read sprite image file:', file.name);
+          reject(new Error(`Failed to read sprite image file: ${file.name}`));
+        };
+        reader.readAsDataURL(file);
+      });
+    });
+
+    try {
+      const newSprites = await Promise.all(promises);
+      const currentSprites = [...l.sprites];
+
+      if (typeof index === 'number') {
+        while (currentSprites.length < index) {
+          currentSprites.push(createEmptySprite());
+        }
+        currentSprites.splice(index, 0, ...newSprites);
+      } else {
+        currentSprites.push(...newSprites);
+      }
+      l.sprites = currentSprites;
+    } catch (error) {
+      console.error('Error adding sprites:', error);
+    }
+  };
+
   const processImageFiles = async (files: File[]) => {
     for (const f of files) addSprite(f);
   };
@@ -376,6 +433,7 @@ export const useLayers = () => {
     flipSprite,
     replaceSprite,
     addSprite,
+    addSprites,
     processImageFiles,
     alignSprites,
     addLayer,

src/views/EditorView.vue

@@ -309,6 +309,7 @@
                 @flip-sprite="flipSprite"
                 @copy-sprite-to-frame="copySpriteToFrame"
                 @open-pixel-editor="openPixelEditor"
+                @add-sprites="addSprites"
               />
             </div>
             <div v-else-if="activeTab === 'preview'" class="h-full flex items-center justify-center">
@@ -372,8 +373,29 @@
   const projectStore = useProjectStore();
   const { closeProject, loadProjectData } = useProjectManager();
   const settingsStore = useSettingsStore();
-  const { layers, visibleLayers, activeLayer, activeLayerId, columns, updateSpritePosition, updateSpriteInLayer, updateSpriteCell, removeSprite, removeSprites, replaceSprite, addSprite, processImageFiles, alignSprites, addLayer, removeLayer, moveLayer, rotateSprite, flipSprite, copySpriteToFrame } =
-    useLayers();
+  const {
+    layers,
+    visibleLayers,
+    activeLayer,
+    activeLayerId,
+    columns,
+    updateSpritePosition,
+    updateSpriteInLayer,
+    updateSpriteCell,
+    removeSprite,
+    removeSprites,
+    replaceSprite,
+    addSprite,
+    addSprites,
+    processImageFiles,
+    alignSprites,
+    addLayer,
+    removeLayer,
+    moveLayer,
+    rotateSprite,
+    flipSprite,
+    copySpriteToFrame,
+  } = useLayers();
 
   const { downloadSpritesheet, exportSpritesheetJSON, importSpritesheetJSON, downloadAsGif, downloadAsZip } = useExportLayers(
     layers,