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docs(cursor): clarify optional capture metadata and rendering scope

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fufesou
2026-09-12 10:46:05 +08:00
parent 54881092b7
commit 6871ae130e
3 changed files with 6 additions and 3 deletions
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2
flutter/lib/desktop/pages/remote_page.dart
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@@ -1116,6 +1116,8 @@ class _ImagePaintState extends State<ImagePaint> {
if (!isWeb && isViewScaled() && !zoomCursor.value && peerDpr > 0) { if (!isWeb && isViewScaled() && !zoomCursor.value && peerDpr > 0) {
return (isWindows ? dpr : 1.0) / peerDpr; return (isWindows ? dpr : 1.0) / peerDpr;
} }
// Density metadata is optional. Keep the legacy path for hosts that
// omit it so capture-backend upgrades are not a client prerequisite.
var cursorScale = 1.0; var cursorScale = 1.0;
if (isWindows) { if (isWindows) {
// debug win10 // debug win10

5
flutter/lib/models/model.dart
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@@ -2850,7 +2850,8 @@ class CanvasModel with ChangeNotifier {
} }
} }
// data for cursor // Scale the host's bitmap and hotspot together. Incorrect source geometry
// must be fixed in host capture, independently of the client's sizing policy.
class CursorData { class CursorData {
final String peerId; final String peerId;
final String id; final String id;
@@ -2858,7 +2859,7 @@ class CursorData {
// Borrowed from CursorModel/PredefinedCursor, which own its lifetime. // Borrowed from CursorModel/PredefinedCursor, which own its lifetime.
// The plugin clones the handle before starting asynchronous encoding. // The plugin clones the handle before starting asynchronous encoding.
final ui.Image nativeImage; final ui.Image nativeImage;
// Zero preserves sizing for peers that predate cursor density metadata. // Zero preserves legacy sizing for capture backends without density metadata.
final double pixelRatio; final double pixelRatio;
double scale; double scale;
Uint8List? data; Uint8List? data;

2
libs/base/protos/message.proto
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@@ -316,7 +316,7 @@ message CursorData {
int32 width = 4; int32 width = 4;
int32 height = 5; int32 height = 5;
bytes colors = 6; bytes colors = 6;
// Physical bitmap pixels per remote logical pixel; 0 means an older sender. // Physical bitmap pixels per remote logical pixel; 0 means unknown density.
double scale = 7; double scale = 7;
} }