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fix(cursor): align Web hotspots with rounded cursor images

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This commit is contained in:
fufesou
2026-09-12 03:29:27 +08:00
parent d876ea0ce4
commit 96cd5cd1e2
3 changed files with 85 additions and 6 deletions
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9
flutter/lib/models/model.dart
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@@ -2920,8 +2920,8 @@ class CursorData {
img2.encodePng(
img2.copyResize(
image,
width: (width * scale).toInt(),
height: (height * scale).toInt(),
width: isWeb ? (width * scale).round() : (width * scale).toInt(),
height: isWeb ? (height * scale).round() : (height * scale).toInt(),
interpolation: img2.Interpolation.average,
),
),
@@ -2932,6 +2932,11 @@ class CursorData {
this.scale = scale;
hotx = hotxOrigin * scale;
hoty = hotyOrigin * scale;
if (isWeb) {
// CSS hotspots must follow the actual rounded PNG dimensions.
hotx = hotxOrigin * (width * scale).round() / width;
hoty = hotyOrigin * (height * scale).round() / height;
}
return scale;
}

8
flutter/lib/web/custom_cursor.dart
View File

@@ -52,8 +52,8 @@ class CursorManager {
'cursor',
jsonEncode({
'url': cursorData.url,
'hotx': cursorData.hotX.toInt(),
'hoty': cursorData.hotY.toInt(),
'hotx': cursorData.hotX.round(),
'hoty': cursorData.hotY.round(),
})
]);
}
@@ -116,8 +116,8 @@ MouseCursor buildCursorOfCache(
CursorManager.instance.registerCursor(CursorData(
key: key,
url: 'data:image/rgba;base64,${base64Encode(data)}',
width: (cache.width * cache.scale).toInt(),
height: (cache.height * cache.scale).toInt(),
width: (cache.width * cache.scale).round(),
height: (cache.height * cache.scale).round(),
hotX: cache.hotx,
hotY: cache.hoty));
cursor.addKey(key);