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[FEAT] Began working on cleaning code

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root
2025-11-18 19:40:44 +01:00
parent f97879b642
commit 6afbd42794
4 changed files with 523 additions and 640 deletions
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src/App.vue
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@@ -135,7 +135,7 @@
</template> </template>
<script setup lang="ts"> <script setup lang="ts">
import { ref, watch, onMounted, onUnmounted } from 'vue'; import { ref, onMounted } from 'vue';
import FileUploader from './components/FileUploader.vue'; import FileUploader from './components/FileUploader.vue';
import SpriteCanvas from './components/SpriteCanvas.vue'; import SpriteCanvas from './components/SpriteCanvas.vue';
import Modal from './components/utilities/Modal.vue'; import Modal from './components/utilities/Modal.vue';
@@ -145,37 +145,24 @@
import SpritesheetSplitter from './components/SpritesheetSplitter.vue'; import SpritesheetSplitter from './components/SpritesheetSplitter.vue';
import GifFpsModal from './components/GifFpsModal.vue'; import GifFpsModal from './components/GifFpsModal.vue';
import DarkModeToggle from './components/utilities/DarkModeToggle.vue'; import DarkModeToggle from './components/utilities/DarkModeToggle.vue';
import GIF from 'gif.js'; import { useSprites } from './composables/useSprites';
import gifWorkerUrl from 'gif.js/dist/gif.worker.js?url'; import { useExport } from './composables/useExport';
import JSZip from 'jszip'; import type { SpriteFile } from './types/sprites';
interface Sprite { const {
id: string; sprites,
file: File; columns,
img: HTMLImageElement; updateSpritePosition,
url: string; updateSpriteCell,
width: number; removeSprite,
height: number; replaceSprite,
x: number; addSprite,
y: number; addSpriteWithResize,
} processImageFiles,
alignSprites,
} = useSprites();
interface SpriteFile { const { downloadSpritesheet, exportSpritesheetJSON, importSpritesheetJSON, downloadAsGif, downloadAsZip } = useExport(sprites, columns);
file: File;
x: number;
y: number;
width: number;
height: number;
}
const sprites = ref<Sprite[]>([]);
const columns = ref(4);
// Clamp and coerce columns to a safe range [1..10]
watch(columns, val => {
const num = typeof val === 'number' ? val : parseInt(String(val));
const safe = Number.isFinite(num) && num >= 1 ? Math.min(num, 10) : 1;
if (safe !== columns.value) columns.value = safe;
});
const isPreviewModalOpen = ref(false); const isPreviewModalOpen = ref(false);
const isHelpModalOpen = ref(false); const isHelpModalOpen = ref(false);
const isFeedbackModalOpen = ref(false); const isFeedbackModalOpen = ref(false);
@@ -186,13 +173,17 @@
const spritesheetImageFile = ref<File | null>(null); const spritesheetImageFile = ref<File | null>(null);
const showFeedbackPopup = ref(false); const showFeedbackPopup = ref(false);
const handleSpritesUpload = (files: File[]) => { const handleSpritesUpload = async (files: File[]) => {
// Check if any of the files is a JSON file // Check if any of the files is a JSON file
const jsonFile = files.find(file => file.type === 'application/json' || file.name.endsWith('.json')); const jsonFile = files.find(file => file.type === 'application/json' || file.name.endsWith('.json'));
if (jsonFile) { if (jsonFile) {
// If it's a JSON file, try to import it try {
importSpritesheetJSON(jsonFile); await importSpritesheetJSON(jsonFile);
} catch (error) {
console.error('Error importing JSON:', error);
alert('Failed to import JSON file. Please check the file format.');
}
return; return;
} }
@@ -224,86 +215,7 @@
processImageFiles(files); processImageFiles(files);
}; };
// Extract the image processing logic to a separate function for reuse // sprite position and export/import/dl handled by composables
const processImageFiles = (files: File[]) => {
Promise.all(
files.map(file => {
return new Promise<Sprite>(resolve => {
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
resolve({
id: crypto.randomUUID(),
file,
img,
url,
width: img.width,
height: img.height,
x: 0,
y: 0,
});
};
img.src = url;
});
})
).then(newSprites => {
sprites.value = [...sprites.value, ...newSprites];
});
};
const updateSpritePosition = (id: string, x: number, y: number) => {
const spriteIndex = sprites.value.findIndex(sprite => sprite.id === id);
if (spriteIndex !== -1) {
// Ensure integer positions for pixel-perfect rendering
sprites.value[spriteIndex].x = Math.floor(x);
sprites.value[spriteIndex].y = Math.floor(y);
}
};
const downloadSpritesheet = () => {
if (sprites.value.length === 0) {
alert('Please upload or import sprites before downloading the spritesheet.');
return;
}
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return;
// Find max dimensions
let maxWidth = 0;
let maxHeight = 0;
sprites.value.forEach(sprite => {
if (sprite.width > maxWidth) maxWidth = sprite.width;
if (sprite.height > maxHeight) maxHeight = sprite.height;
});
// Set canvas size
const rows = Math.ceil(sprites.value.length / columns.value);
canvas.width = maxWidth * columns.value;
canvas.height = maxHeight * rows;
// Disable image smoothing for pixel-perfect rendering
ctx.imageSmoothingEnabled = false;
// Draw sprites with integer positions
sprites.value.forEach((sprite, index) => {
const col = index % columns.value;
const row = Math.floor(index / columns.value);
const cellX = Math.floor(col * maxWidth);
const cellY = Math.floor(row * maxHeight);
ctx.drawImage(sprite.img, Math.floor(cellX + sprite.x), Math.floor(cellY + sprite.y));
});
// Create download link with PNG format
const link = document.createElement('a');
link.download = 'spritesheet.png';
link.href = canvas.toDataURL('image/png', 1.0); // Use maximum quality
link.click();
};
// Preview modal control // Preview modal control
const openPreviewModal = () => { const openPreviewModal = () => {
@@ -362,89 +274,11 @@
// Handle the split spritesheet result // Handle the split spritesheet result
const handleSplitSpritesheet = (spriteFiles: SpriteFile[]) => { const handleSplitSpritesheet = (spriteFiles: SpriteFile[]) => {
// Process sprite files with their positions // For now ignore bounding box offsets; add all files as new sprites
Promise.all( processImageFiles(spriteFiles.map(s => s.file));
spriteFiles.map(spriteFile => {
return new Promise<Sprite>(resolve => {
const url = URL.createObjectURL(spriteFile.file);
const img = new Image();
img.onload = () => {
resolve({
id: crypto.randomUUID(),
file: spriteFile.file,
img,
url,
width: img.width,
height: img.height,
x: 0, // Start at top-left of cell; ignore splitter bounding-box offset for display
y: 0, // Start at top-left of cell; ignore splitter bounding-box offset for display
});
};
img.src = url;
});
})
).then(newSprites => {
sprites.value = [...sprites.value, ...newSprites];
});
}; };
// Export spritesheet as JSON with base64 images // export handled by composable
const exportSpritesheetJSON = async () => {
if (sprites.value.length === 0) {
alert('Nothing to export. Please add sprites first.');
return;
}
// Create an array to store sprite data with base64 images
const spritesData = await Promise.all(
sprites.value.map(async (sprite, index) => {
// Create a canvas for each sprite to get its base64 data
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return null;
// Set canvas size to match the sprite
canvas.width = sprite.width;
canvas.height = sprite.height;
// Draw the sprite
ctx.drawImage(sprite.img, 0, 0);
// Get base64 data
const base64Data = canvas.toDataURL('image/png');
return {
id: sprite.id,
width: sprite.width,
height: sprite.height,
x: sprite.x,
y: sprite.y,
base64: base64Data,
name: sprite.file.name,
};
})
);
// Create JSON object with all necessary data
const jsonData = {
columns: columns.value,
sprites: spritesData.filter(Boolean), // Remove any null values
};
// Convert to JSON string
const jsonString = JSON.stringify(jsonData, null, 2);
// Create download link
const blob = new Blob([jsonString], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.download = 'spritesheet.json';
link.href = url;
link.click();
// Clean up
URL.revokeObjectURL(url);
};
// Open file dialog for JSON import // Open file dialog for JSON import
const openJSONImportDialog = () => { const openJSONImportDialog = () => {
@@ -452,383 +286,36 @@
}; };
// Handle JSON file selection // Handle JSON file selection
const handleJSONFileChange = (event: Event) => { const handleJSONFileChange = async (event: Event) => {
const input = event.target as HTMLInputElement; const input = event.target as HTMLInputElement;
if (input.files && input.files.length > 0) { if (input.files && input.files.length > 0) {
const jsonFile = input.files[0]; const jsonFile = input.files[0];
importSpritesheetJSON(jsonFile); try {
await importSpritesheetJSON(jsonFile);
} catch (error) {
console.error('Error importing JSON:', error);
alert('Failed to import JSON file. Please check the file format.');
}
// Reset input value so uploading the same file again will trigger the event // Reset input value so uploading the same file again will trigger the event
if (jsonFileInput.value) jsonFileInput.value.value = ''; if (jsonFileInput.value) jsonFileInput.value.value = '';
} }
}; };
// Import spritesheet from JSON // import handled by composable (used in handleSpritesUpload/handleJSONFileChange)
const importSpritesheetJSON = async (jsonFile: File) => {
try {
const jsonText = await jsonFile.text();
const jsonData = JSON.parse(jsonText);
if (!jsonData.sprites || !Array.isArray(jsonData.sprites)) { // alignment handled by composable (exposed as alignSprites)
throw new Error('Invalid JSON format: missing sprites array');
}
// Set columns if available // cell update handled by composable (exposed as updateSpriteCell)
if (jsonData.columns && typeof jsonData.columns === 'number') {
columns.value = jsonData.columns;
}
// Process each sprite // remove handled by composable
// Replace current sprites with imported ones
// Revoke existing blob: URLs to avoid memory leaks
if (sprites.value.length) {
sprites.value.forEach(s => {
if (s.url && s.url.startsWith('blob:')) {
try {
URL.revokeObjectURL(s.url);
} catch {}
}
});
}
sprites.value = await Promise.all( // replace handled by composable
jsonData.sprites.map(async (spriteData: any) => {
return new Promise<Sprite>(resolve => {
// Create image from base64
const img = new Image();
img.onload = () => {
// Create a file from the base64 data
const byteString = atob(spriteData.base64.split(',')[1]);
const mimeType = spriteData.base64.split(',')[0].split(':')[1].split(';')[0];
const ab = new ArrayBuffer(byteString.length);
const ia = new Uint8Array(ab);
for (let i = 0; i < byteString.length; i++) { // add handled by composable
ia[i] = byteString.charCodeAt(i);
}
const blob = new Blob([ab], { type: mimeType }); // add with resize handled by composable
const fileName = spriteData.name || `sprite-${spriteData.id}.png`;
const file = new File([blob], fileName, { type: mimeType });
resolve({ // GIF handled by composable
id: spriteData.id || crypto.randomUUID(),
file,
img,
url: spriteData.base64,
width: spriteData.width,
height: spriteData.height,
x: spriteData.x || 0,
y: spriteData.y || 0,
});
};
img.src = spriteData.base64;
});
})
);
} catch (error) {
console.error('Error importing JSON:', error);
alert('Failed to import JSON file. Please check the file format.');
}
};
// Add new alignment function
const alignSprites = (position: 'left' | 'center' | 'right' | 'top' | 'middle' | 'bottom') => {
if (sprites.value.length === 0) return;
// Find max dimensions for the current column layout
let maxWidth = 0;
let maxHeight = 0;
sprites.value.forEach(sprite => {
maxWidth = Math.max(maxWidth, sprite.width);
maxHeight = Math.max(maxHeight, sprite.height);
});
sprites.value = sprites.value.map((sprite, index) => {
let x = sprite.x;
let y = sprite.y;
switch (position) {
case 'left':
x = 0;
break;
case 'center':
x = Math.floor((maxWidth - sprite.width) / 2);
break;
case 'right':
x = Math.floor(maxWidth - sprite.width);
break;
case 'top':
y = 0;
break;
case 'middle':
y = Math.floor((maxHeight - sprite.height) / 2);
break;
case 'bottom':
y = Math.floor(maxHeight - sprite.height);
break;
}
// Ensure integer positions for pixel-perfect rendering
return { ...sprite, x: Math.floor(x), y: Math.floor(y) };
});
// Force redraw of the preview canvas
setTimeout(() => {
const event = new Event('forceRedraw');
window.dispatchEvent(event);
}, 0);
};
const updateSpriteCell = (id: string, newIndex: number) => {
// Find the current index of the sprite
const currentIndex = sprites.value.findIndex(sprite => sprite.id === id);
if (currentIndex === -1) return;
// If we're trying to move to the same position, do nothing
if (currentIndex === newIndex) return;
// Create a copy of the sprites array
const newSprites = [...sprites.value];
// Perform a swap between the two positions
if (newIndex < sprites.value.length) {
// Get references to both sprites
const movingSprite = { ...newSprites[currentIndex] };
const targetSprite = { ...newSprites[newIndex] };
// Swap them
newSprites[currentIndex] = targetSprite;
newSprites[newIndex] = movingSprite;
} else {
// If dragging to an empty cell (beyond the array length)
// Use the original reordering logic
const [movedSprite] = newSprites.splice(currentIndex, 1);
newSprites.splice(newIndex, 0, movedSprite);
}
// Update the sprites array
sprites.value = newSprites;
};
const removeSprite = (id: string) => {
const spriteIndex = sprites.value.findIndex(sprite => sprite.id === id);
if (spriteIndex !== -1) {
const sprite = sprites.value[spriteIndex];
// Revoke the blob URL to prevent memory leaks
if (sprite.url && sprite.url.startsWith('blob:')) {
try {
URL.revokeObjectURL(sprite.url);
} catch {}
}
// Remove the sprite from the array
sprites.value.splice(spriteIndex, 1);
}
};
const replaceSprite = (id: string, file: File) => {
const spriteIndex = sprites.value.findIndex(sprite => sprite.id === id);
if (spriteIndex !== -1) {
const oldSprite = sprites.value[spriteIndex];
// Revoke the old blob URL to prevent memory leaks
if (oldSprite.url && oldSprite.url.startsWith('blob:')) {
try {
URL.revokeObjectURL(oldSprite.url);
} catch {}
}
// Create new sprite from the replacement file
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
const newSprite: Sprite = {
id: oldSprite.id, // Keep the same ID
file,
img,
url,
width: img.width,
height: img.height,
x: oldSprite.x, // Keep the same position
y: oldSprite.y,
};
// Create a new array to trigger Vue's reactivity
const newSprites = [...sprites.value];
newSprites[spriteIndex] = newSprite;
sprites.value = newSprites;
};
img.onerror = () => {
console.error('Failed to load replacement image:', file.name);
URL.revokeObjectURL(url);
};
img.src = url;
}
};
const addSprite = (file: File) => {
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
const newSprite: Sprite = {
id: crypto.randomUUID(),
file,
img,
url,
width: img.width,
height: img.height,
x: 0,
y: 0,
};
sprites.value = [...sprites.value, newSprite];
};
img.onerror = () => {
console.error('Failed to load new sprite image:', file.name);
URL.revokeObjectURL(url);
};
img.src = url;
};
const addSpriteWithResize = (file: File) => {
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
// Find current max dimensions
let maxWidth = 0;
let maxHeight = 0;
sprites.value.forEach(sprite => {
maxWidth = Math.max(maxWidth, sprite.width);
maxHeight = Math.max(maxHeight, sprite.height);
});
// Create new sprite
const newSprite: Sprite = {
id: crypto.randomUUID(),
file,
img,
url,
width: img.width,
height: img.height,
x: 0,
y: 0,
};
// Calculate new max dimensions after adding the new sprite
const newMaxWidth = Math.max(maxWidth, img.width);
const newMaxHeight = Math.max(maxHeight, img.height);
// Resize existing sprites if the new image is larger
if (img.width > maxWidth || img.height > maxHeight) {
// Update all existing sprites to center them in the new larger cells
sprites.value = sprites.value.map(sprite => {
let newX = sprite.x;
let newY = sprite.y;
// Adjust x position if width increased
if (img.width > maxWidth) {
const widthDiff = newMaxWidth - maxWidth;
// Try to keep the sprite in the same relative position
const relativeX = maxWidth > 0 ? sprite.x / maxWidth : 0;
newX = Math.floor(relativeX * newMaxWidth);
// Make sure it doesn't go out of bounds
newX = Math.max(0, Math.min(newX, newMaxWidth - sprite.width));
}
// Adjust y position if height increased
if (img.height > maxHeight) {
const heightDiff = newMaxHeight - maxHeight;
const relativeY = maxHeight > 0 ? sprite.y / maxHeight : 0;
newY = Math.floor(relativeY * newMaxHeight);
newY = Math.max(0, Math.min(newY, newMaxHeight - sprite.height));
}
return { ...sprite, x: newX, y: newY };
});
}
// Add the new sprite
sprites.value = [...sprites.value, newSprite];
// Force redraw of the canvas
setTimeout(() => {
const event = new Event('forceRedraw');
window.dispatchEvent(event);
}, 0);
};
img.onerror = () => {
console.error('Failed to load new sprite image:', file.name);
URL.revokeObjectURL(url);
};
img.src = url;
};
// Download as GIF with specified FPS
const downloadAsGif = (fps: number) => {
if (sprites.value.length === 0) {
alert('Please upload or import sprites before generating a GIF.');
return;
}
// Find max dimensions
let maxWidth = 0;
let maxHeight = 0;
sprites.value.forEach(sprite => {
if (sprite.width > maxWidth) maxWidth = sprite.width;
if (sprite.height > maxHeight) maxHeight = sprite.height;
});
// Create a canvas for rendering frames
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return;
// Set canvas size to just fit one sprite cell
canvas.width = maxWidth;
canvas.height = maxHeight;
// Disable image smoothing for pixel-perfect rendering
ctx.imageSmoothingEnabled = false;
// Create GIF encoder
const gif = new GIF({
workers: 2,
quality: 10,
width: maxWidth,
height: maxHeight,
workerScript: gifWorkerUrl,
});
// Add each sprite as a frame
sprites.value.forEach(sprite => {
// Clear canvas
ctx.clearRect(0, 0, canvas.width, canvas.height);
// Draw grid background (cell)
ctx.fillStyle = '#f9fafb';
ctx.fillRect(0, 0, maxWidth, maxHeight);
// Draw sprite
ctx.drawImage(sprite.img, Math.floor(sprite.x), Math.floor(sprite.y));
// Add frame to GIF
gif.addFrame(ctx, { copy: true, delay: 1000 / fps });
});
// Generate GIF
gif.on('finished', (blob: Blob) => {
// Create download link
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.download = 'animation.gif';
link.href = url;
link.click();
// Clean up
URL.revokeObjectURL(url);
});
gif.render();
};
// Check for one-time feedback popup on mount // Check for one-time feedback popup on mount
onMounted(() => { onMounted(() => {
@@ -851,89 +338,7 @@
} }
}; };
// Revoke blob URLs on unmount to avoid memory leaks // unmount cleanup is handled inside useSprites
onUnmounted(() => {
sprites.value.forEach(s => {
if (s.url && s.url.startsWith('blob:')) {
try {
URL.revokeObjectURL(s.url);
} catch {}
}
});
});
// Download as ZIP with each cell individually // ZIP handled by composable
const downloadAsZip = async () => {
if (sprites.value.length === 0) {
alert('Please upload or import sprites before downloading a ZIP.');
return;
}
// Create a new ZIP file
const zip = new JSZip();
// Find max dimensions
let maxWidth = 0;
let maxHeight = 0;
sprites.value.forEach(sprite => {
if (sprite.width > maxWidth) maxWidth = sprite.width;
if (sprite.height > maxHeight) maxHeight = sprite.height;
});
// Create a canvas for rendering individual sprites
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return;
// Set canvas size to just fit one sprite cell
canvas.width = maxWidth;
canvas.height = maxHeight;
// Disable image smoothing for pixel-perfect rendering
ctx.imageSmoothingEnabled = false;
// Add each sprite as an individual file
sprites.value.forEach((sprite, index) => {
// Clear canvas
ctx.clearRect(0, 0, canvas.width, canvas.height);
// Draw grid background (cell)
ctx.fillStyle = '#f9fafb';
ctx.fillRect(0, 0, maxWidth, maxHeight);
// Draw sprite
ctx.drawImage(sprite.img, Math.floor(sprite.x), Math.floor(sprite.y));
// Convert to PNG data URL
const dataURL = canvas.toDataURL('image/png');
// Convert data URL to binary data
const binaryData = atob(dataURL.split(',')[1]);
const arrayBuffer = new ArrayBuffer(binaryData.length);
const uint8Array = new Uint8Array(arrayBuffer);
for (let i = 0; i < binaryData.length; i++) {
uint8Array[i] = binaryData.charCodeAt(i);
}
// Add to ZIP file with clearer naming
const baseName = sprite.file?.name ? sprite.file.name.replace(/\s+/g, '_') : `sprite_${index + 1}.png`;
const name = `${index + 1}_${baseName}`;
zip.file(name, uint8Array);
});
// Generate ZIP file
const content = await zip.generateAsync({ type: 'blob' });
// Create download link
const url = URL.createObjectURL(content);
const link = document.createElement('a');
link.download = 'sprites.zip';
link.href = url;
link.click();
// Clean up
URL.revokeObjectURL(url);
};
</script> </script>

205
src/composables/useExport.ts Normal file
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@@ -0,0 +1,205 @@
import type { Ref } from 'vue';
import GIF from 'gif.js';
import gifWorkerUrl from 'gif.js/dist/gif.worker.js?url';
import JSZip from 'jszip';
import type { Sprite } from '../types/sprites';
import { getMaxDimensions } from './useSprites';
export const useExport = (sprites: Ref<Sprite[]>, columns: Ref<number>) => {
const downloadSpritesheet = () => {
if (!sprites.value.length) {
alert('Please upload or import sprites before downloading the spritesheet.');
return;
}
const { maxWidth, maxHeight } = getMaxDimensions(sprites.value);
const rows = Math.ceil(sprites.value.length / columns.value);
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return;
canvas.width = maxWidth * columns.value;
canvas.height = maxHeight * rows;
ctx.imageSmoothingEnabled = false;
sprites.value.forEach((sprite, index) => {
const col = index % columns.value;
const row = Math.floor(index / columns.value);
const cellX = Math.floor(col * maxWidth);
const cellY = Math.floor(row * maxHeight);
ctx.drawImage(sprite.img, Math.floor(cellX + sprite.x), Math.floor(cellY + sprite.y));
});
const link = document.createElement('a');
link.download = 'spritesheet.png';
link.href = canvas.toDataURL('image/png', 1.0);
link.click();
};
const exportSpritesheetJSON = async () => {
if (!sprites.value.length) {
alert('Nothing to export. Please add sprites first.');
return;
}
const spritesData = await Promise.all(
sprites.value.map(async sprite => {
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return null;
canvas.width = sprite.width;
canvas.height = sprite.height;
ctx.drawImage(sprite.img, 0, 0);
const base64Data = canvas.toDataURL('image/png');
return {
id: sprite.id,
width: sprite.width,
height: sprite.height,
x: sprite.x,
y: sprite.y,
base64: base64Data,
name: sprite.file.name,
};
})
);
const jsonData = { columns: columns.value, sprites: spritesData.filter(Boolean) };
const jsonString = JSON.stringify(jsonData, null, 2);
const blob = new Blob([jsonString], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.download = 'spritesheet.json';
link.href = url;
link.click();
URL.revokeObjectURL(url);
};
const importSpritesheetJSON = async (jsonFile: File) => {
const jsonText = await jsonFile.text();
const jsonData = JSON.parse(jsonText);
if (!jsonData.sprites || !Array.isArray(jsonData.sprites)) throw new Error('Invalid JSON format: missing sprites array');
if (jsonData.columns && typeof jsonData.columns === 'number') columns.value = jsonData.columns;
// revoke existing blob urls
if (sprites.value.length) {
sprites.value.forEach(s => {
if (s.url && s.url.startsWith('blob:')) {
try {
URL.revokeObjectURL(s.url);
} catch {}
}
});
}
const imported = await Promise.all(
jsonData.sprites.map((spriteData: any) => {
return new Promise<Sprite>(resolve => {
const img = new Image();
img.onload = () => {
const byteString = atob(spriteData.base64.split(',')[1]);
const mimeType = spriteData.base64.split(',')[0].split(':')[1].split(';')[0];
const ab = new ArrayBuffer(byteString.length);
const ia = new Uint8Array(ab);
for (let i = 0; i < byteString.length; i++) ia[i] = byteString.charCodeAt(i);
const blob = new Blob([ab], { type: mimeType });
const fileName = spriteData.name || `sprite-${spriteData.id}.png`;
const file = new File([blob], fileName, { type: mimeType });
resolve({
id: spriteData.id || crypto.randomUUID(),
file,
img,
url: spriteData.base64,
width: spriteData.width,
height: spriteData.height,
x: spriteData.x || 0,
y: spriteData.y || 0,
});
};
img.src = spriteData.base64;
});
})
);
sprites.value = imported;
};
const downloadAsGif = (fps: number) => {
if (!sprites.value.length) {
alert('Please upload or import sprites before generating a GIF.');
return;
}
const { maxWidth, maxHeight } = getMaxDimensions(sprites.value);
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return;
canvas.width = maxWidth;
canvas.height = maxHeight;
ctx.imageSmoothingEnabled = false;
const gif = new GIF({ workers: 2, quality: 10, width: maxWidth, height: maxHeight, workerScript: gifWorkerUrl });
sprites.value.forEach(sprite => {
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = '#f9fafb';
ctx.fillRect(0, 0, maxWidth, maxHeight);
ctx.drawImage(sprite.img, Math.floor(sprite.x), Math.floor(sprite.y));
gif.addFrame(ctx, { copy: true, delay: 1000 / fps });
});
gif.on('finished', (blob: Blob) => {
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.download = 'animation.gif';
link.href = url;
link.click();
URL.revokeObjectURL(url);
});
gif.render();
};
const downloadAsZip = async () => {
if (!sprites.value.length) {
alert('Please upload or import sprites before downloading a ZIP.');
return;
}
const zip = new JSZip();
const { maxWidth, maxHeight } = getMaxDimensions(sprites.value);
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx) return;
canvas.width = maxWidth;
canvas.height = maxHeight;
ctx.imageSmoothingEnabled = false;
sprites.value.forEach((sprite, index) => {
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = '#f9fafb';
ctx.fillRect(0, 0, maxWidth, maxHeight);
ctx.drawImage(sprite.img, Math.floor(sprite.x), Math.floor(sprite.y));
const dataURL = canvas.toDataURL('image/png');
const binary = atob(dataURL.split(',')[1]);
const buf = new ArrayBuffer(binary.length);
const view = new Uint8Array(buf);
for (let i = 0; i < binary.length; i++) view[i] = binary.charCodeAt(i);
const baseName = sprite.file?.name ? sprite.file.name.replace(/\s+/g, '_') : `sprite_${index + 1}.png`;
const name = `${index + 1}_${baseName}`;
zip.file(name, view);
});
const content = await zip.generateAsync({ type: 'blob' });
const url = URL.createObjectURL(content);
const link = document.createElement('a');
link.download = 'sprites.zip';
link.href = url;
link.click();
URL.revokeObjectURL(url);
};
return { downloadSpritesheet, exportSpritesheetJSON, importSpritesheetJSON, downloadAsGif, downloadAsZip };
};

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src/composables/useSprites.ts Normal file
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import { ref, watch, onUnmounted } from 'vue';
import type { Sprite } from '../types/sprites';
export const useSprites = () => {
const sprites = ref<Sprite[]>([]);
const columns = ref(4);
// Clamp and coerce columns to a safe range [1..10]
watch(columns, val => {
const num = typeof val === 'number' ? val : parseInt(String(val));
const safe = Number.isFinite(num) && num >= 1 ? Math.min(num, 10) : 1;
if (safe !== columns.value) columns.value = safe;
});
const updateSpritePosition = (id: string, x: number, y: number) => {
const i = sprites.value.findIndex(s => s.id === id);
if (i !== -1) {
sprites.value[i].x = Math.floor(x);
sprites.value[i].y = Math.floor(y);
}
};
const alignSprites = (position: 'left' | 'center' | 'right' | 'top' | 'middle' | 'bottom') => {
if (!sprites.value.length) return;
const { maxWidth, maxHeight } = getMaxDimensions(sprites.value);
sprites.value = sprites.value.map(sprite => {
let x = sprite.x;
let y = sprite.y;
switch (position) {
case 'left':
x = 0;
break;
case 'center':
x = Math.floor((maxWidth - sprite.width) / 2);
break;
case 'right':
x = Math.floor(maxWidth - sprite.width);
break;
case 'top':
y = 0;
break;
case 'middle':
y = Math.floor((maxHeight - sprite.height) / 2);
break;
case 'bottom':
y = Math.floor(maxHeight - sprite.height);
break;
}
return { ...sprite, x: Math.floor(x), y: Math.floor(y) };
});
triggerForceRedraw();
};
const updateSpriteCell = (id: string, newIndex: number) => {
const currentIndex = sprites.value.findIndex(s => s.id === id);
if (currentIndex === -1 || currentIndex === newIndex) return;
const next = [...sprites.value];
if (newIndex < sprites.value.length) {
const moving = { ...next[currentIndex] };
const target = { ...next[newIndex] };
next[currentIndex] = target;
next[newIndex] = moving;
} else {
const [moved] = next.splice(currentIndex, 1);
next.splice(newIndex, 0, moved);
}
sprites.value = next;
};
const removeSprite = (id: string) => {
const i = sprites.value.findIndex(s => s.id === id);
if (i === -1) return;
const s = sprites.value[i];
revokeIfBlob(s.url);
sprites.value.splice(i, 1);
};
const replaceSprite = (id: string, file: File) => {
const i = sprites.value.findIndex(s => s.id === id);
if (i === -1) return;
const old = sprites.value[i];
revokeIfBlob(old.url);
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
const next: Sprite = {
id: old.id,
file,
img,
url,
width: img.width,
height: img.height,
x: old.x,
y: old.y,
};
const arr = [...sprites.value];
arr[i] = next;
sprites.value = arr;
};
img.onerror = () => {
console.error('Failed to load replacement image:', file.name);
URL.revokeObjectURL(url);
};
img.src = url;
};
const addSprite = (file: File) => {
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
const s: Sprite = {
id: crypto.randomUUID(),
file,
img,
url,
width: img.width,
height: img.height,
x: 0,
y: 0,
};
sprites.value = [...sprites.value, s];
};
img.onerror = () => {
console.error('Failed to load new sprite image:', file.name);
URL.revokeObjectURL(url);
};
img.src = url;
};
const addSpriteWithResize = (file: File) => {
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
const { maxWidth, maxHeight } = getMaxDimensions(sprites.value);
const newSprite: Sprite = {
id: crypto.randomUUID(),
file,
img,
url,
width: img.width,
height: img.height,
x: 0,
y: 0,
};
const newMaxWidth = Math.max(maxWidth, img.width);
const newMaxHeight = Math.max(maxHeight, img.height);
if (img.width > maxWidth || img.height > maxHeight) {
sprites.value = sprites.value.map(sprite => {
let newX = sprite.x;
let newY = sprite.y;
if (img.width > maxWidth) {
const relativeX = maxWidth > 0 ? sprite.x / maxWidth : 0;
newX = Math.floor(relativeX * newMaxWidth);
newX = Math.max(0, Math.min(newX, newMaxWidth - sprite.width));
}
if (img.height > maxHeight) {
const relativeY = maxHeight > 0 ? sprite.y / maxHeight : 0;
newY = Math.floor(relativeY * newMaxHeight);
newY = Math.max(0, Math.min(newY, newMaxHeight - sprite.height));
}
return { ...sprite, x: newX, y: newY };
});
}
sprites.value = [...sprites.value, newSprite];
triggerForceRedraw();
};
img.onerror = () => {
console.error('Failed to load new sprite image:', file.name);
URL.revokeObjectURL(url);
};
img.src = url;
};
const processImageFiles = (files: File[]) => {
Promise.all(
files.map(
file =>
new Promise<Sprite>(resolve => {
const url = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
resolve({
id: crypto.randomUUID(),
file,
img,
url,
width: img.width,
height: img.height,
x: 0,
y: 0,
});
};
img.src = url;
})
)
).then(newSprites => {
sprites.value = [...sprites.value, ...newSprites];
});
};
onUnmounted(() => {
sprites.value.forEach(s => revokeIfBlob(s.url));
});
return {
sprites,
columns,
updateSpritePosition,
alignSprites,
updateSpriteCell,
removeSprite,
replaceSprite,
addSprite,
addSpriteWithResize,
processImageFiles,
};
};
export const getMaxDimensions = (arr: Sprite[] | Readonly<Sprite[]>): { maxWidth: number; maxHeight: number } => {
let maxWidth = 0;
let maxHeight = 0;
arr.forEach(s => {
if (s.width > maxWidth) maxWidth = s.width;
if (s.height > maxHeight) maxHeight = s.height;
});
return { maxWidth, maxHeight };
};
export const revokeIfBlob = (url?: string) => {
if (url && url.startsWith('blob:')) {
try {
URL.revokeObjectURL(url);
} catch {}
}
};
export const triggerForceRedraw = () => {
setTimeout(() => {
window.dispatchEvent(new Event('forceRedraw'));
}, 0);
};

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export interface Sprite {
id: string;
file: File;
img: HTMLImageElement;
url: string;
width: number;
height: number;
x: number;
y: number;
}
export interface SpriteFile {
file: File;
x: number;
y: number;
width: number;
height: number;
}