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Flutter web, custom cursor (#7545)

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* 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>
This commit is contained in:
fufesou 2024-03-29 10:52:32 +08:00 • committed by GitHub
parent 4b0e88ce46
commit 3ef9824d8e
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5 changed files with 192 additions and 39 deletions
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43
flutter/lib/native/custom_cursor.dart Normal file
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@ -0,0 +1,43 @@
import 'package:flutter_custom_cursor/cursor_manager.dart'
as custom_cursor_manager;
import 'package:flutter_custom_cursor/flutter_custom_cursor.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';
import 'package:flutter_hbb/models/model.dart';
deleteCustomCursor(String key) =>
custom_cursor_manager.CursorManager.instance.deleteCursor(key);
MouseCursor buildCursorOfCache(
CursorModel cursor, double scale, CursorData? cache) {
if (cache == null) {
return MouseCursor.defer;
} else {
final key = cache.updateGetKey(scale);
if (!cursor.cachedKeys.contains(key)) {
// data should be checked here, because it may be changed after `updateGetKey()`
final data = cache.data;
if (data == null) {
return MouseCursor.defer;
}
debugPrint(
"Register custom cursor with key $key (${cache.hotx},${cache.hoty})");
// [Safety]
// It's ok to call async registerCursor in current synchronous context,
// because activating the cursor is also an async call and will always
// be executed after this.
custom_cursor_manager.CursorManager.instance
.registerCursor(custom_cursor_manager.CursorData()
..name = key
..buffer = data
..width = (cache.width * cache.scale).toInt()
..height = (cache.height * cache.scale).toInt()
..hotX = cache.hotx
..hotY = cache.hoty);
cursor.addKey(key);
}
return FlutterCustomMemoryImageCursor(key: key);
}
}