All examples that I found about web and dart:html package. Can I get keyboard or mouse events from system in a desktop console program?
I don't think you can read mouse events, but you can read pressed key codes from stdin
. For this just have to switch it "raw" mode by setting both lineMode
and echoMode
to false
and then listening on this stream.
Here is a simple example:
import 'dart:async';
import 'dart:convert';
import 'dart:io' as io;
Future main() async {
io.stdin
..lineMode = false
..echoMode = false;
StreamSubscription subscription;
subscription = io.stdin.listen((List<int> codes) {
var first = codes.first;
var len = codes.length;
var key;
if (len == 1 && ((first > 0x01 && first < 0x20) || first == 0x7f)) {
// Control code. For example:
// 0x09 - Tab
// 0x10 - Enter
// 0x1b - ESC
if (first == 0x09) {
subscription.cancel();
}
key = codes.toString();
} else if (len > 1 && first == 0x1b) {
// ESC sequence. For example:
// [ 0x1b, 0x5b, 0x41 ] - Up Arrow
// [ 0x1b, 0x5b, 0x42 ] - Down Arrow
// [ 0x1b, 0x5b, 0x43 ] - Right Arrow
// [ 0x1b, 0x5b, 0x44 ] - Left Arrow
key = '${codes.toString()} ESC ${String.fromCharCodes(codes.skip(1))}';
} else {
key = utf8.decode(codes);
}
print(key);
});
print('Start listening');
}
You can also utilize dart_console
package or adapt their readKey()
method that parses control and esc codes.