## [1.7.0] - 2025-11-22

- Add layer support
- Add background color picker
- Improved UI

public/CHANGELOG.md

@@ -1,5 +1,10 @@
 All notable changes to this project will be documented in this file.
 
+## [1.7.0] - 2025-11-22
+- Add layer support
+- Add background color picker
+- Improved UI
+
 ## [1.6.0] - 2025-11-18
 - Improved animation preview modal
 - Add toggle for negative spacing in cells
@@ -34,30 +39,30 @@ All notable changes to this project will be documented in this file.
 ## [1.7.0] - 2025-05-02
 
 ### Removed
-- 🪟 Checkerboard pattern inside sprite cells as it could conflict with the sprite. (Thanks Rivers)
+- Checkerboard pattern inside sprite cells as it could conflict with the sprite. (Thanks Rivers)
 
 ## [1.6.0] - 2025-04-30
 
 ### Added
-- 🎨 Dark mode support
-- ⭐ Preview other sprites inside cells from overview
+- Dark mode support
+- Preview other sprites inside cells from overview
 
 ## [1.5.0] - 2025-04-30
 
 ### Added
-- 📏 Offset indicators for better sprite alignment
+- Offset indicators for better sprite alignment
 - Set base offset for offset indicators
 
 ## [1.4.0] - 2025-04-06
 
 ### Added
-- 🎥 Download as GIF functionality
-- 🗂 Download as ZIP functionality
+- Download as GIF functionality
+- Download as ZIP functionality
 
 ## [1.3.0] - 2025-04-06
 
 ### Fixed
-- 📄 When importing a spritesheet, the tool will now remove transparent from the edges of each sprite so you can move them inside their cells.
+- When importing a spritesheet, the tool will now remove transparent from the edges of each sprite so you can move them inside their cells.
 
 ## [1.2.0] - 2025-04-06
 
@@ -67,22 +72,22 @@ All notable changes to this project will be documented in this file.
 ## [1.1.0] - 2025-04-06
 
 ### Added
-- 📝 Help modal with instructions and tips
-- 🎨 Pixel perfect mode for better sprite alignment
+- Help modal with instructions and tips
+- Pixel perfect mode for better sprite alignment
 
 ## [1.0.0] - 2025-04-06
 
 ### Added
 - 🎉 Initial release
-- ✨ Basic spritesheet generation functionality
-  - Drag and drop image upload
-  - Grid-based sprite arrangement
-  - Custom grid size configuration
-- 🎮 Animation preview functionality
-  - Real-time animation preview
-  - Adjustable animation speed
-  - Frame-by-frame navigation
-- 💾 JSON import/export support
-  - Save sprite arrangements
-  - Load previous projects
-  - Export configuration files
+- Basic spritesheet generation functionality
+- Drag and drop image upload
+- Grid-based sprite arrangement
+- Custom grid size configuration
+- Animation preview functionality
+- Real-time animation preview
+- Adjustable animation speed
+- Frame-by-frame navigation
+- JSON import/export support
+- Save sprite arrangements
+- Load previous projects
+- Export configuration files

src/App.vue

@@ -45,9 +45,7 @@
             <div class="flex flex-wrap gap-2">
               <div v-for="layer in layers" :key="layer.id" class="flex items-center gap-2 px-2 py-1 rounded border border-gray-200 dark:border-gray-600" :class="{ 'ring-2 ring-blue-500': layer.id === activeLayerId }">
                 <button @click="activeLayerId = layer.id" class="px-2 py-0.5 rounded bg-blue-50 dark:bg-blue-900/30 text-blue-800 dark:text-blue-200">{{ layer.name }}</button>
-                <label class="flex items-center gap-1 text-xs text-gray-600 dark:text-gray-300">
-                  <input type="checkbox" v-model="layer.visible" /> Visible
-                </label>
+                <label class="flex items-center gap-1 text-xs text-gray-600 dark:text-gray-300"> <input type="checkbox" v-model="layer.visible" /> Visible </label>
                 <button @click="moveLayer(layer.id, 'up')" class="text-xs px-1.5 py-0.5 bg-gray-100 dark:bg-gray-700 rounded">↑</button>
                 <button @click="moveLayer(layer.id, 'down')" class="text-xs px-1.5 py-0.5 bg-gray-100 dark:bg-gray-700 rounded">↓</button>
                 <button v-if="layers.length > 1" @click="removeLayer(layer.id)" class="text-xs px-1.5 py-0.5 bg-red-100 dark:bg-red-900/30 text-red-700 dark:text-red-200 rounded">Remove</button>
@@ -123,7 +121,17 @@
               <span>Preview animation</span>
             </button>
           </div>
-          <sprite-canvas :layers="layers" :active-layer-id="activeLayerId" :columns="columns" @update-sprite="updateSpritePosition" @update-sprite-cell="updateSpriteCell" @remove-sprite="removeSprite" @replace-sprite="replaceSprite" @add-sprite="addSprite" @add-sprite-with-resize="addSpriteWithResize" />
+          <sprite-canvas
+            :layers="layers"
+            :active-layer-id="activeLayerId"
+            :columns="columns"
+            @update-sprite="updateSpritePosition"
+            @update-sprite-cell="updateSpriteCell"
+            @remove-sprite="removeSprite"
+            @replace-sprite="replaceSprite"
+            @add-sprite="addSprite"
+            @add-sprite-with-resize="addSpriteWithResize"
+          />
         </div>
       </div>
     </div>
@@ -173,26 +181,9 @@
   import type { SpriteFile } from './types/sprites';
 
   const settingsStore = useSettingsStore();
-  const {
-    layers,
-    visibleLayers,
-    activeLayer,
-    activeLayerId,
-    columns,
-    updateSpritePosition,
-    updateSpriteCell,
-    removeSprite,
-    replaceSprite,
-    addSprite,
-    addSpriteWithResize,
-    processImageFiles,
-    alignSprites,
-    addLayer,
-    removeLayer,
-    moveLayer,
-  } = useLayers();
+  const { layers, visibleLayers, activeLayer, activeLayerId, columns, updateSpritePosition, updateSpriteCell, removeSprite, replaceSprite, addSprite, addSpriteWithResize, processImageFiles, alignSprites, addLayer, removeLayer, moveLayer } = useLayers();
 
-  const { downloadSpritesheet, exportSpritesheetJSON, importSpritesheetJSON, downloadAsGif, downloadAsZip } = useExportLayers(layers, columns, toRef(settingsStore, 'negativeSpacingEnabled'));
+  const { downloadSpritesheet, exportSpritesheetJSON, importSpritesheetJSON, downloadAsGif, downloadAsZip } = useExportLayers(layers, columns, toRef(settingsStore, 'negativeSpacingEnabled'), activeLayerId, toRef(settingsStore, 'backgroundColor'));
 
   const cellSize = computed(() => {
     if (!layers.value.length) return { width: 0, height: 0 };

src/components/SpriteCanvas.vue

@@ -23,6 +23,18 @@
           <input id="negative-spacing" type="checkbox" v-model="settingsStore.negativeSpacingEnabled" class="mr-2 w-4 h-4" />
           <label for="negative-spacing" class="dark:text-gray-200 text-sm sm:text-base">Negative spacing</label>
         </div>
+        <!-- Background color picker -->
+        <div class="flex items-center gap-2">
+          <label for="bg-color" class="dark:text-gray-200 text-sm sm:text-base">Background:</label>
+          <select id="bg-color" v-model="settingsStore.backgroundColor" class="px-2 py-1 border border-gray-300 dark:border-gray-600 rounded bg-white dark:bg-gray-700 dark:text-gray-200 text-sm">
+            <option value="transparent">Transparent</option>
+            <option value="#ffffff">White</option>
+            <option value="#000000">Black</option>
+            <option value="#f9fafb">Light Gray</option>
+            <option value="custom">Custom...</option>
+          </select>
+          <input v-if="settingsStore.backgroundColor === 'custom'" type="color" v-model="customColor" @input="settingsStore.setBackgroundColor(customColor)" class="w-8 h-8 border border-gray-300 dark:border-gray-600 rounded cursor-pointer" />
+        </div>
       </div>
     </div>
 
@@ -172,7 +184,7 @@
     findSpriteAtPosition,
     calculateMaxDimensions,
   } = useDragSprite({
-    sprites: computed(() => (props.layers.find(l => l.id === props.activeLayerId)?.sprites ?? [])),
+    sprites: computed(() => props.layers.find(l => l.id === props.activeLayerId)?.sprites ?? []),
     columns: toRef(props, 'columns'),
     zoom,
     allowCellSwap,
@@ -198,6 +210,7 @@
   const contextMenuSpriteId = ref<string | null>(null);
   const replacingSpriteId = ref<string | null>(null);
   const fileInput = ref<HTMLInputElement | null>(null);
+  const customColor = ref('#ffffff');
 
   const startDrag = (event: MouseEvent) => {
     if (!canvasRef.value) return;
@@ -423,6 +436,7 @@
   watch(() => settingsStore.pixelPerfect, requestDraw);
   watch(() => settingsStore.darkMode, requestDraw);
   watch(() => settingsStore.negativeSpacingEnabled, requestDraw);
+  watch(() => settingsStore.backgroundColor, requestDraw);
   watch(showAllSprites, requestDraw);
 </script>
 

src/composables/useCanvas2D.ts

@@ -116,9 +116,10 @@ export function useCanvas2D(canvasRef: Ref<HTMLCanvasElement | null>, options?:
     });
   };
 
-  // Fill cell background with theme-aware color
+  // Fill cell background with selected color or transparent
   const fillCellBackground = (x: number, y: number, width: number, height: number) => {
-    const color = settingsStore.darkMode ? '#1F2937' : '#f9fafb';
+    if (settingsStore.backgroundColor === 'transparent') return;
+    const color = settingsStore.backgroundColor === 'custom' ? settingsStore.backgroundColor : settingsStore.backgroundColor;
     fillRect(x, y, width, height, color);
   };
 

src/composables/useExport.ts

@@ -156,8 +156,6 @@ export const useExport = (sprites: Ref<Sprite[]>, columns: Ref<number>, negative
 
     sprites.value.forEach(sprite => {
       ctx.clearRect(0, 0, canvas.width, canvas.height);
-      ctx.fillStyle = '#f9fafb';
-      ctx.fillRect(0, 0, cellWidth, cellHeight);
       ctx.drawImage(sprite.img, Math.floor(negativeSpacing + sprite.x), Math.floor(negativeSpacing + sprite.y));
       gif.addFrame(ctx, { copy: true, delay: 1000 / fps });
     });
@@ -194,8 +192,6 @@ export const useExport = (sprites: Ref<Sprite[]>, columns: Ref<number>, negative
 
     sprites.value.forEach((sprite, index) => {
       ctx.clearRect(0, 0, canvas.width, canvas.height);
-      ctx.fillStyle = '#f9fafb';
-      ctx.fillRect(0, 0, cellWidth, cellHeight);
       ctx.drawImage(sprite.img, Math.floor(negativeSpacing + sprite.x), Math.floor(negativeSpacing + sprite.y));
       const dataURL = canvas.toDataURL('image/png');
       const binary = atob(dataURL.split(',')[1]);

src/composables/useExportLayers.ts

@@ -6,14 +6,17 @@ import type { Layer, Sprite } from '@/types/sprites';
 import { getMaxDimensionsAcrossLayers } from './useLayers';
 import { calculateNegativeSpacing } from './useNegativeSpacing';
 
-export const useExportLayers = (layersRef: Ref<Layer[]>, columns: Ref<number>, negativeSpacingEnabled: Ref<boolean>) => {
+export const useExportLayers = (layersRef: Ref<Layer[]>, columns: Ref<number>, negativeSpacingEnabled: Ref<boolean>, activeLayerId?: Ref<string>, backgroundColor?: Ref<string>) => {
   const getVisibleLayers = () => layersRef.value.filter(l => l.visible);
   const getAllVisibleSprites = () => getVisibleLayers().flatMap(l => l.sprites);
 
   const drawCompositeCell = (ctx: CanvasRenderingContext2D, cellIndex: number, cellWidth: number, cellHeight: number, negativeSpacing: number) => {
     ctx.clearRect(0, 0, cellWidth, cellHeight);
-    ctx.fillStyle = '#f9fafb';
+    // Apply background color if not transparent
+    if (backgroundColor?.value && backgroundColor.value !== 'transparent') {
+      ctx.fillStyle = backgroundColor.value;
       ctx.fillRect(0, 0, cellWidth, cellHeight);
+    }
     const vLayers = getVisibleLayers();
     vLayers.forEach(layer => {
       const sprite = layer.sprites[cellIndex];
@@ -130,16 +133,32 @@ export const useExportLayers = (layersRef: Ref<Layer[]>, columns: Ref<number>, n
         const sprites: Sprite[] = await Promise.all(layerData.sprites.map((s: any) => loadSprite(s)));
         newLayers.push({ id: layerData.id || crypto.randomUUID(), name: layerData.name || 'Layer', visible: layerData.visible !== false, locked: !!layerData.locked, sprites });
       }
+      // Ensure at least one layer with sprites is visible
+      if (newLayers.length > 0 && !newLayers.some(l => l.visible && l.sprites.length > 0)) {
+        const firstLayerWithSprites = newLayers.find(l => l.sprites.length > 0);
+        if (firstLayerWithSprites) {
+          firstLayerWithSprites.visible = true;
+        }
+      }
       layersRef.value = newLayers;
+      // Set active layer to the first layer with sprites
+      if (activeLayerId && newLayers.length > 0) {
+        const firstWithSprites = newLayers.find(l => l.sprites.length > 0);
+        activeLayerId.value = firstWithSprites ? firstWithSprites.id : newLayers[0].id;
+      }
       return;
     }
 
     if (Array.isArray(data.sprites)) {
       const sprites: Sprite[] = await Promise.all(data.sprites.map((s: any) => loadSprite(s)));
+      const baseLayerId = crypto.randomUUID();
       layersRef.value = [
-        { id: crypto.randomUUID(), name: 'Base', visible: true, locked: false, sprites },
-        { id: crypto.randomUUID(), name: 'Clothes', visible: true, locked: false, sprites: [] },
+        { id: baseLayerId, name: 'Base', visible: true, locked: false, sprites },
+        { id: crypto.randomUUID(), name: 'Other', visible: true, locked: false, sprites: [] },
       ];
+      if (activeLayerId) {
+        activeLayerId.value = baseLayerId;
+      }
       return;
     }
 
@@ -222,9 +241,7 @@ export const useExportLayers = (layersRef: Ref<Layer[]>, columns: Ref<number>, n
           name: layer.name,
           visible: layer.visible,
           locked: layer.locked,
-          sprites: await Promise.all(
-            layer.sprites.map(async s => ({ id: s.id, width: s.width, height: s.height, x: s.x, y: s.y, name: s.file.name }))
-          ),
+          sprites: await Promise.all(layer.sprites.map(async s => ({ id: s.id, width: s.width, height: s.height, x: s.x, y: s.y, name: s.file.name }))),
         }))
       );
       const meta = { version: 2, columns: columns.value, negativeSpacingEnabled: negativeSpacingEnabled.value, layers: layersPayload };

src/composables/useLayers.ts

@@ -200,6 +200,6 @@ export const useLayers = () => {
 };
 
 export const getMaxDimensionsAcrossLayers = (layers: Layer[]) => {
-  const sprites = layers.flatMap(l => l.visible ? l.sprites : []);
+  const sprites = layers.flatMap(l => (l.visible ? l.sprites : []));
   return getMaxDimensionsSingle(sprites);
 };

src/stores/useSettingsStore.ts

@@ -4,6 +4,7 @@ import { ref, watch } from 'vue';
 const pixelPerfect = ref(true);
 const darkMode = ref(false);
 const negativeSpacingEnabled = ref(false);
+const backgroundColor = ref('transparent');
 
 // Initialize dark mode from localStorage or system preference
 if (typeof window !== 'undefined') {
@@ -56,14 +57,20 @@ export const useSettingsStore = defineStore('settings', () => {
     negativeSpacingEnabled.value = !negativeSpacingEnabled.value;
   }
 
+  function setBackgroundColor(color: string) {
+    backgroundColor.value = color;
+  }
+
   return {
     pixelPerfect,
     darkMode,
     negativeSpacingEnabled,
+    backgroundColor,
     togglePixelPerfect,
     setPixelPerfect,
     toggleDarkMode,
     setDarkMode,
     toggleNegativeSpacing,
+    setBackgroundColor,
   };
 });