45 lines
1.6 KiB
Dart
45 lines
1.6 KiB
Dart
import 'package:flutter_custom_cursor/cursor_manager.dart'
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as custom_cursor_manager;
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import 'package:flutter_custom_cursor/flutter_custom_cursor.dart';
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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';
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deleteCustomCursor(String key) =>
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custom_cursor_manager.CursorManager.instance.deleteCursor(key);
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resetSystemCursor() {}
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MouseCursor buildCursorOfCache(
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CursorModel cursor, double scale, 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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// [Safety]
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// It's ok to call async registerCursor in current synchronous context,
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// because activating the cursor is also an async call and will always
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// be executed after this.
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custom_cursor_manager.CursorManager.instance
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.registerCursor(custom_cursor_manager.CursorData()
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..name = key
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..buffer = 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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