Convert images to webp when uploading.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4012 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/cory/ssblit.json

@@ -1 +1 @@
-{"type":"tildefriends-app","files":{"app.js":"&XCpiJOtpMzQz5Zo+Hu9f3ppQON9PxFdV4XnS2Ae+Ye8=.sha256","lit-all.min.js":"&N4A12AsifdQgwdpII0SFtG513BfoLpmPjdJ9VTDftpg=.sha256","index.html":"&Vpp3ezlQiD5guf1P6yZhpcNMnO0u+uQoil3hNkwiIp4=.sha256","script.js":"&G8puK9Q4MngHy3D4ppcKyT49WKbHD2OCeUcAw2ghTDE=.sha256","lit-all.min.js.map":"&oFY9wO4MnujgfGNGv4VggHc5V5JwX4C8csqKZ6KJYbE=.sha256","tf-id-picker.js":"&9BDffV4HY9FqhL7XI4it+UQJB4cYwbDNsY3S1cxy2vw=.sha256","tf-app.js":"&qqpOZHnkJQevhLGPUEJ7br2S/LNH+nQtC91vz3CrYrE=.sha256","tf-message.js":"&fFCn+5+eRe552tiiESswbXVU2oEfibb+w0gzZKKGWkk=.sha256","tf-user.js":"&bXTedgBudTQLXEBPY9R8OLfQ/ZLpo8YRU9Oq/wuGG3Y=.sha256","tf-utils.js":"&N2yKZwFnb2GbPeipgQtu6xFvezENNOgud9G7EhCQ/K0=.sha256","commonmark.min.js":"&bfBaMLU19d1p/vPBF9hlARqDX002KXG/UOfxOahZhe4=.sha256","tf-compose.js":"&QTKDJcbhLICwXdBQKD1v26NziF9QnSJtcaD1vEKGaag=.sha256","emojis.json":"&h3P4pez+AI4aYdsN0dJ3pbUEFR0276t9AM20caj/W/s=.sha256","emojis.js":"&pqYLDE/13PyEt2ceeFqvnwZ8NqWfPfpDBt4vP8SeHbs=.sha256","tf-styles.js":"&Zw90HptAvGwX/vBnEhRVfNrYjMSssFnnKpp8bzwXQH0=.sha256","tf-profile.js":"&vRKjsnYvOiHCQahzEfznCvP5YDwUPtltlpWf+pxwZ1Y=.sha256","commonmark-linkify.js":"&X+hNNkmSRvKY86khyAun+cXksquXbMakZdINbGbx30g=.sha256","tf-tab-search.js":"&ESt2vMG19sH5j6ungKua/ZuvIGslyuWyb3juXdOCecg=.sha256","tf-tab-news.js":"&6ialbh/M2eBCDH6wFyoOHyDqG9QHbyIrzvRK+CgeyRc=.sha256","tf-tab-connections.js":"&jSnF/5NmgqxRze1XQAEGOW5mPzOV1/8aCyrDRZu34IQ=.sha256","tf-news.js":"&K3azL6eFcgbM9xpLHU3L5oSOApi1fXEvJZrhPkZgDpQ=.sha256","tribute.css":"&9FogMzZHKXCfGb7mlh7z+/wiNZzBsOB/tKoh6MfYJno=.sha256","tribute.esm.js":"&P1wKqCfYULpR/ahSB98JP8xaxfikuZwwtT6I/SAo7/Y=.sha256"}}
+{"type":"tildefriends-app","files":{"app.js":"&XCpiJOtpMzQz5Zo+Hu9f3ppQON9PxFdV4XnS2Ae+Ye8=.sha256","lit-all.min.js":"&N4A12AsifdQgwdpII0SFtG513BfoLpmPjdJ9VTDftpg=.sha256","index.html":"&Vpp3ezlQiD5guf1P6yZhpcNMnO0u+uQoil3hNkwiIp4=.sha256","script.js":"&G8puK9Q4MngHy3D4ppcKyT49WKbHD2OCeUcAw2ghTDE=.sha256","lit-all.min.js.map":"&oFY9wO4MnujgfGNGv4VggHc5V5JwX4C8csqKZ6KJYbE=.sha256","tf-id-picker.js":"&9BDffV4HY9FqhL7XI4it+UQJB4cYwbDNsY3S1cxy2vw=.sha256","tf-app.js":"&qqpOZHnkJQevhLGPUEJ7br2S/LNH+nQtC91vz3CrYrE=.sha256","tf-message.js":"&fFCn+5+eRe552tiiESswbXVU2oEfibb+w0gzZKKGWkk=.sha256","tf-user.js":"&bXTedgBudTQLXEBPY9R8OLfQ/ZLpo8YRU9Oq/wuGG3Y=.sha256","tf-utils.js":"&N2yKZwFnb2GbPeipgQtu6xFvezENNOgud9G7EhCQ/K0=.sha256","commonmark.min.js":"&bfBaMLU19d1p/vPBF9hlARqDX002KXG/UOfxOahZhe4=.sha256","tf-compose.js":"&VfFVhkWbMD9MdljdjPbSc5R1YYAj4z9C8W2Gxij65sc=.sha256","emojis.json":"&h3P4pez+AI4aYdsN0dJ3pbUEFR0276t9AM20caj/W/s=.sha256","emojis.js":"&pqYLDE/13PyEt2ceeFqvnwZ8NqWfPfpDBt4vP8SeHbs=.sha256","tf-styles.js":"&Zw90HptAvGwX/vBnEhRVfNrYjMSssFnnKpp8bzwXQH0=.sha256","tf-profile.js":"&vRKjsnYvOiHCQahzEfznCvP5YDwUPtltlpWf+pxwZ1Y=.sha256","commonmark-linkify.js":"&X+hNNkmSRvKY86khyAun+cXksquXbMakZdINbGbx30g=.sha256","tf-tab-search.js":"&ESt2vMG19sH5j6ungKua/ZuvIGslyuWyb3juXdOCecg=.sha256","tf-tab-news.js":"&6ialbh/M2eBCDH6wFyoOHyDqG9QHbyIrzvRK+CgeyRc=.sha256","tf-tab-connections.js":"&jSnF/5NmgqxRze1XQAEGOW5mPzOV1/8aCyrDRZu34IQ=.sha256","tf-news.js":"&K3azL6eFcgbM9xpLHU3L5oSOApi1fXEvJZrhPkZgDpQ=.sha256","tribute.css":"&9FogMzZHKXCfGb7mlh7z+/wiNZzBsOB/tKoh6MfYJno=.sha256","tribute.esm.js":"&P1wKqCfYULpR/ahSB98JP8xaxfikuZwwtT6I/SAo7/Y=.sha256"}}

apps/cory/ssblit/tf-compose.js

@@ -59,16 +59,39 @@ class TfComposeElement extends LitElement {
 		preview.innerHTML = tfutils.markdown(text);
 	}
 
+	convert_to_webp(buffer, type) {
+		return new Promise(function(resolve, reject) {
+			let img = new Image();
+			img.onload = function() {
+				let canvas = document.createElement('canvas');
+				canvas.width = img.width;
+				canvas.height = img.height;
+				let context = canvas.getContext('2d');
+				context.drawImage(img, 0, 0);
+				let data_url = canvas.toDataURL('image/webp');
+				let result = atob(data_url.split(',')[1]).split('').map(x => x.charCodeAt(0));
+				resolve(result);
+			}
+			img.onerror = function(event) {
+				reject(new Error('Failed to load image.'));
+			};
+			let raw = Array.from(new Uint8Array(buffer)).map(b => String.fromCharCode(b)).join('');
+			let original = `data:${type};base64,${btoa(raw)}`;
+			img.src = original;
+		});
+	}
+
 	add_file(file) {
 		let self = this;
 		file.arrayBuffer().then(function(buffer) {
-			let bin = Array.from(new Uint8Array(buffer));
+			return self.convert_to_webp(buffer, file.type);
+		}).then(function(bin) {
 			return Promise.all([tfrpc.rpc.store_blob(bin), bin]);
 		}).then(function([id, bin]) {
 			self.mentions[id] = {
 				link: id,
 				name: file.name,
-				type: file.type,
+				type: 'image/webp',
 				size: bin.length,
 			};
 			self.mentions = Object.assign({}, self.mentions);
@@ -76,13 +99,13 @@ class TfComposeElement extends LitElement {
 			edit.value += `\n![${file.name}](${id})`;
 			self.changed();
 		}).catch(function(e) {
-			alert(e.message);
+			alert(e?.message);
 		});
 	}
 
 	paste(event) {
 		let self = this;
-		for(let item of event.clipboardData.items) {
+		for (let item of event.clipboardData.items) {
 			if (item.type?.startsWith('image/')) {
 				let file = item.getAsFile();
 				if (!file) {