wip

packages/frontend/src/components/MkImageEffectorDialog.vue

@@ -61,7 +61,7 @@ import { deepClone } from '@/utility/clone.js';
 import { FXS } from '@/utility/image-effector/fxs.js';
 
 const props = defineProps<{
-	image: HTMLImageElement;
+	image: ImageBitmap;
 }>();
 
 const emit = defineEmits<{

packages/frontend/src/components/MkUploaderDialog.vue

@@ -297,9 +297,9 @@ function showMenu(ev: MouseEvent, item: typeof items.value[0]) {
 			icon: 'ti ti-sparkles',
 			text: i18n.ts._imageEffector.title,
 			action: async () => {
-				const imgElementCtx = await getImageElement(item.file);
+				const imageBitmap = await window.createImageBitmap(item.file);
 				const { dispose } = os.popup(defineAsyncComponent(() => import('@/components/MkImageEffectorDialog.vue')), {
-					image: imgElementCtx.img,
+					image: imageBitmap,
 				}, {
 					ok: (file) => {
 						URL.revokeObjectURL(item.thumbnail);
@@ -314,7 +314,7 @@ function showMenu(ev: MouseEvent, item: typeof items.value[0]) {
 						});
 					},
 					closed: () => {
-						imgElementCtx.dispose();
+						imageBitmap.close();
 						dispose();
 					},
 				});
@@ -353,16 +353,16 @@ function showMenu(ev: MouseEvent, item: typeof items.value[0]) {
 				icon: 'ti ti-plus',
 				text: i18n.ts.add,
 				action: async () => {
-					const imgElementCtx = await getImageElement(item.file);
+					const imageBitmap = await window.createImageBitmap(item.file);
 					const { dispose } = os.popup(defineAsyncComponent(() => import('@/components/MkWatermarkEditorDialog.vue')), {
-						image: imgElementCtx.img,
+						image: imageBitmap,
 					}, {
 						ok: (preset) => {
 							prefer.commit('watermarkPresets', [...prefer.s.watermarkPresets, preset]);
 							changeWatermarkPreset(preset.id);
 						},
 						closed: () => {
-							imgElementCtx.dispose();
+							imageBitmap.close();
 							dispose();
 						},
 					});
@@ -515,35 +515,11 @@ async function chooseFile(ev: MouseEvent) {
 	}
 }
 
-/**
- * 使用後は dispose() でメモリの解放を忘れないように！！！
- */
-function getImageElement(file: Blob | File): Promise<{ img: HTMLImageElement, dispose: () => void }> {
-	return new Promise((resolve, reject) => {
-		const img = new Image();
-
-		img.onload = () => {
-			resolve({
-				img: markRaw(img),
-				dispose: () => {
-					URL.revokeObjectURL(img.src);
-				},
-			});
-		};
-
-		img.onerror = (error) => {
-			reject(error);
-		};
-
-		img.src = URL.createObjectURL(file);
-	});
-}
-
 async function preprocess(item: (typeof items)['value'][number]): Promise<void> {
 	item.preprocessing = true;
 
 	let file: Blob | File = item.file;
-	const imgElementCtx = await getImageElement(file);
+	const imageBitmap = await window.createImageBitmap(file);
 
 	const needsWatermark = item.watermarkPresetId != null && WATERMARK_SUPPORTED_TYPES.includes(file.type);
 	const preset = prefer.s.watermarkPresets.find(p => p.id === item.watermarkPresetId);
@@ -551,9 +527,9 @@ async function preprocess(item: (typeof items)['value'][number]): Promise<void>
 		const canvas = window.document.createElement('canvas');
 		const renderer = new WatermarkRenderer({
 			canvas: canvas,
-			renderWidth: imgElementCtx.img.width,
-			renderHeight: imgElementCtx.img.height,
-			image: imgElementCtx.img,
+			renderWidth: imageBitmap.width,
+			renderHeight: imageBitmap.height,
+			image: imageBitmap,
 		});
 
 		await renderer.setLayers(preset.layers);
@@ -604,7 +580,7 @@ async function preprocess(item: (typeof items)['value'][number]): Promise<void>
 	item.preprocessedFile = markRaw(file);
 	item.preprocessing = false;
 
-	imgElementCtx.dispose();
+	imageBitmap.close();
 }
 
 function initializeFile(file: File) {

packages/frontend/src/components/MkWatermarkEditorDialog.vue

@@ -63,7 +63,7 @@ const $i = ensureSignin();
 
 const props = defineProps<{
 	preset?: WatermarkPreset | null;
-	image?: HTMLImageElement | null;
+	image?: ImageBitmap | null;
 }>();
 
 const preset = reactive(deepClone(props.preset) ?? {
@@ -168,10 +168,21 @@ async function initRenderer() {
 			image: sampleImage_2_3,
 		});
 	} else if (props.image != null) {
+		const MAX_W = 1000;
+		const MAX_H = 1000;
+		let w = props.image.width;
+		let h = props.image.height;
+
+		if (w > MAX_W || h > MAX_H) {
+			const scale = Math.min(MAX_W / w, MAX_H / h);
+			w *= scale;
+			h *= scale;
+		}
+
 		renderer = new WatermarkRenderer({
 			canvas: canvasEl.value,
-			renderWidth: props.image.width,
-			renderHeight: props.image.height,
+			renderWidth: w,
+			renderHeight: h,
 			image: props.image,
 		});
 	}

packages/frontend/src/utility/watermark.ts

@@ -39,7 +39,7 @@ export class WatermarkRenderer {
 		canvas: HTMLCanvasElement,
 		renderWidth: number,
 		renderHeight: number,
-		image: HTMLImageElement,
+		image: HTMLImageElement | ImageBitmap,
 	}) {
 		this.effector = new ImageEffector({
 			canvas: options.canvas,