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https://github.com/rustdesk/rustdesk.git
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3ef9824d8e
* Flutter web, custom cursor Signed-off-by: fufesou <shuanglongchen@yeah.net> * trivial changes Signed-off-by: fufesou <shuanglongchen@yeah.net> * Flutter web, custom cursor, use date after 'updateGetKey()' Signed-off-by: fufesou <shuanglongchen@yeah.net> * trivial changes Signed-off-by: fufesou <shuanglongchen@yeah.net> --------- Signed-off-by: fufesou <shuanglongchen@yeah.net>
122 lines
3.1 KiB
Dart
122 lines
3.1 KiB
Dart
import 'dart:convert';
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import 'dart:js' as js;
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import 'package:flutter/foundation.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_hbb/models/model.dart' as model;
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class CursorData {
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final String key;
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final String url;
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final double hotX;
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final double hotY;
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final int width;
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final int height;
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CursorData({
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required this.key,
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required this.url,
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required this.hotX,
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required this.hotY,
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required this.width,
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required this.height,
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});
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}
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/// The cursor manager
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class CursorManager {
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final Map<String, CursorData> _cursors = <String, CursorData>{};
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String latestKey = '';
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CursorManager._();
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static CursorManager instance = CursorManager._();
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Future<void> registerCursor(CursorData data) async {
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_cursors[data.key] = data;
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}
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Future<void> deleteCursor(String key) async {
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_cursors.remove(key);
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}
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Future<void> setSystemCursor(String key) async {
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if (latestKey == key) {
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return;
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}
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latestKey = key;
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final CursorData? cursorData = _cursors[key];
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if (cursorData != null) {
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js.context.callMethod('setByName', [
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'cursor',
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jsonEncode({
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'url': cursorData.url,
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'hotx': cursorData.hotX.toInt(),
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'hoty': cursorData.hotY.toInt(),
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})
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]);
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}
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}
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}
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class FlutterCustomMemoryImageCursor extends MouseCursor {
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final String key;
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const FlutterCustomMemoryImageCursor({required this.key});
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@override
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MouseCursorSession createSession(int device) =>
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_FlutterCustomMemoryImageCursorSession(this, device);
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@override
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String get debugDescription =>
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objectRuntimeType(this, 'FlutterCustomMemoryImageCursor');
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}
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class _FlutterCustomMemoryImageCursorSession extends MouseCursorSession {
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_FlutterCustomMemoryImageCursorSession(
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FlutterCustomMemoryImageCursor cursor, int device)
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: super(cursor, device);
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@override
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FlutterCustomMemoryImageCursor get cursor =>
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super.cursor as FlutterCustomMemoryImageCursor;
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@override
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Future<void> activate() async {
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await CursorManager.instance.setSystemCursor(cursor.key);
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}
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@override
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void dispose() {}
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}
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deleteCustomCursor(String key) => CursorManager.instance.deleteCursor(key);
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MouseCursor buildCursorOfCache(
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model.CursorModel cursor, double scale, model.CursorData? cache) {
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if (cache == null) {
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return MouseCursor.defer;
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} else {
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final key = cache.updateGetKey(scale);
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if (!cursor.cachedKeys.contains(key)) {
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// data should be checked here, because it may be changed after `updateGetKey()`
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final data = cache.data;
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if (data == null) {
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return MouseCursor.defer;
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}
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debugPrint(
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"Register custom cursor with key $key (${cache.hotx},${cache.hoty})");
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CursorManager.instance.registerCursor(CursorData(
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key: key,
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url: 'data:image/rgba;base64,${base64Encode(data)}',
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width: (cache.width * cache.scale).toInt(),
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height: (cache.height * cache.scale).toInt(),
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hotX: cache.hotx,
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hotY: cache.hoty));
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cursor.addKey(key);
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}
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return FlutterCustomMemoryImageCursor(key: key);
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}
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}
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