[WIP] Добавил функцию сжатия изображения

This commit is contained in:
megavrilinvv
2023-04-24 16:59:27 +03:00
parent 1885f9e8f8
commit 6bc21f3afb

View File

@@ -8,10 +8,12 @@
type="file", type="file",
id="image-upload", id="image-upload",
accept="image/.jpg,.jpeg,.png, .jpg", accept="image/.jpg,.jpeg,.png, .jpg",
class="image-field",
@change="(e)=>previewImage(e)", @change="(e)=>previewImage(e)",
@click="compressed"
) )
.avatar.flex.absolute.items-center.gap-x-6 .avatar.flex.absolute.items-center.gap-x-6
img.avatar.object-cover(for="image-upload", :src="image") img.avatar.object-cover(for="image-upload", :src="image" )
q-btn( q-btn(
round, round,
color="primary", color="primary",
@@ -31,6 +33,7 @@ export default {
data() { data() {
return { return {
image: addImageIcon, image: addImageIcon,
imageFile: null,
}; };
}, },
mixins: [v_model], mixins: [v_model],
@@ -41,6 +44,44 @@ export default {
}, },
}, },
methods: { methods: {
compressed() {
const compressImage = async (file, { quality = 1, type = file.type }) => {
const imageBitmap = await createImageBitmap(file);
const canvas = document.createElement("canvas");
canvas.width = imageBitmap.width;
canvas.height = imageBitmap.height;
const ctx = canvas.getContext("2d");
ctx.drawImage(imageBitmap, 0, 0);
const blob = await new Promise((resolve) =>
canvas.toBlob(resolve, type, quality)
);
return new File([blob], file.name, {
type: blob.type,
});
};
const inputFile = document.querySelector(".image-field");
inputFile.addEventListener("change", async (e) => {
const { files } = e.target;
if (!files.length) return;
const dataTransfer = new DataTransfer();
for (const file of files) {
if (!file.type.startsWith("image")) {
dataTransfer.items.add(file);
continue;
}
const compressedFile = await compressImage(file, {
quality: 0.5,
type: "image/jpeg",
});
dataTransfer.items.add(compressedFile);
}
this.imageData = [...dataTransfer.files];
});
},
previewImage(event) { previewImage(event) {
let picture = event.target.files; let picture = event.target.files;
let reader = new FileReader(); let reader = new FileReader();