os_read, ui misc

package/index.html

@@ -173,6 +173,31 @@ const wasm_app_imports = {
         window.requestAnimationFrame(wasm_update);
     }
 
+    canvas.addEventListener('dragover', e => { e.preventDefault(); });
+    canvas.addEventListener("drop", (e) => {
+        e.preventDefault();
+        if (e.dataTransfer.items) {
+            [...e.dataTransfer.items].forEach((item, i) => {
+                if (item.kind === "file") {
+                    let file = item.getAsFile();
+                    let reader = new FileReader();
+
+                    let blob = file.slice(0, file.size);
+                    reader.onload = (e) => {
+                        if (e.target.error != null) {
+                            console.log("failed to read file: ", e.target.error);
+                            return;
+                        }
+                        let result = e.target.result;
+
+                        // console.log(new TextDecoder().decode(result));
+                    }
+                    reader.readAsArrayBuffer(blob);
+                }
+            });
+        }
+    });
+
     addEventListener("resize", (event) => { wake_up(); });
     addEventListener("keydown", (event) => {
         if (["F1", "F2", "F3", "p"].includes(event.key)) event.preventDefault();