feat(flutter): add mobile canvas lock (#15877)

* feat: add mobile canvas lock

* Update flutter/lib/models/model.dart

Remove redundant canvas-lock comment

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* remove redundant logic

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
Co-authored-by: Krik Jin <isjinhk@outlook.com>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: fufesou <linlong1266@gmail.com>

flutter/lib/common/widgets/remote_input.dart

@@ -115,6 +115,7 @@ class _RawTouchGestureDetectorRegionState
   InputModel get inputModel => widget.inputModel;
   bool get handleTouch => (isDesktop || isWebDesktop) || ffiModel.touchMode;
   SessionID get sessionId => ffi.sessionId;
+  bool get canvasLocked => isMobile && ffi.canvasModel.locked;
 
   @override
   Widget build(BuildContext context) {
@@ -471,6 +472,8 @@ class _RawTouchGestureDetectorRegionState
       return;
     }
 
+    if (canvasLocked) return;
+
     if ((isDesktop || isWebDesktop)) {
       final scale = ((d.scale - _scale) * 1000).toInt();
       _scale = d.scale;

flutter/lib/mobile/pages/remote_page.dart

@@ -1276,6 +1276,14 @@ void showOptions(
   List<TToggleMenu> cursorToggles = await toolbarCursor(context, id, gFFI);
   List<TToggleMenu> displayToggles =
       await toolbarDisplayToggle(context, id, gFFI);
+  if (isMobile) {
+    displayToggles.insert(
+        0,
+        TToggleMenu(
+            child: Text(translate('Lock canvas')),
+            value: gFFI.canvasModel.locked,
+            onChanged: (value) => gFFI.canvasModel.setLocked(value == true)));
+  }
 
   List<TToggleMenu> privacyModeList = [];
   if ((gFFI.ffiModel.pi.features.privacyMode && gFFI.ffiModel.keyboard) ||

flutter/lib/models/model.dart

@@ -2213,6 +2213,7 @@ class CanvasModel with ChangeNotifier {
   double _y = 0;
   // image scale
   double _scale = 1.0;
+  bool _locked = false;
   double _devicePixelRatio = 1.0;
   Size _size = Size.zero;
   // the tabbar over the image
@@ -2261,12 +2262,19 @@ class CanvasModel with ChangeNotifier {
   double get x => _x;
   double get y => _y;
   double get scale => _scale;
+  bool get locked => _locked;
   double get devicePixelRatio => _devicePixelRatio;
   Size get size => _size;
   ScrollStyle get scrollStyle => _scrollStyle;
   ViewStyle get viewStyle => _lastViewStyle;
   RxBool get imageOverflow => _imageOverflow;
 
+  void setLocked(bool value) {
+    if (_locked == value) return;
+    _locked = value;
+    notifyListeners();
+  }
+
   _resetScroll() => setScrollPercent(0.0, 0.0);
 
   void setScrollPercent(double x, double y) {
@@ -2727,6 +2735,7 @@ class CanvasModel with ChangeNotifier {
     _x = 0;
     _y = 0;
     _scale = 1.0;
+    _locked = false;
     _lastViewStyle = ViewStyle.defaultViewStyle();
     _timerMobileFocusCanvasCursor?.cancel();
     _timerMobileRestoreCanvasOffset?.cancel();

src/lang/ar.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "يتم دعم صيغة CIDR، مثال: 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/be.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Падтрымліваецца натацыя CIDR, напрыклад: 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/bg.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Поддържа се CIDR нотация, например: 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ca.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "S'admet la notació CIDR, per exemple 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/cn.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "支持 CIDR 写法，例如 192.168.1.0/24"),
         ("Continue", "继续"),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", "锁定画布"),
     ].iter().cloned().collect();
 }

src/lang/cs.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Je podporován zápis CIDR, například 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/da.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR-notation understøttes, f.eks. 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/de.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Die CIDR-Notation wird unterstützt, z. B. 192.168.1.0/24"),
         ("Continue", "Weiter"),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/el.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Υποστηρίζεται η σημειογραφία CIDR, π.χ. 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/eo.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "La notacio CIDR estas subtenata, ekzemple 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/es.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Se admite la notación CIDR, por ejemplo 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/et.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Toetatud on CIDR-tähistus, näiteks 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/eu.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR notazioa onartzen da, adibidez 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/fa.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "نماد CIDR پشتیبانی می شود، برای مثال 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/fi.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR-merkintä on tuettu, esimerkiksi 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/fr.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "La notation CIDR est prise en charge, par exemple 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ge.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "მხარდაჭერილია CIDR ჩანაწერი, მაგალითად 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/gu.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR નોટેશન સપોર્ટેડ છે, ઉदાહરણ તરીકે 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/he.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "יש תמיכה בסימון CIDR, לדוגמה 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/hi.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR नोटेशन समर्थित है, उदाहरण के लिए 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/hr.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Podržan je CIDR zapis, primjerice 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/hu.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "A CIDR jelölés támogatott, például 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/id.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Notasi CIDR didukung, misalnya 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/it.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "È supportata la notazione CIDR, ad esempio 192.168.1.0/24"),
         ("Continue", "Continua"),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ja.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR 表記に対応しています。例: 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ko.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR 표기를 지원합니다. 예: 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/kz.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR жазбасына қолдау көрсетіледі, мысалы 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/lt.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Palaikomas CIDR žymėjimas, pavyzdžiui 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/lv.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Tiek atbalstīts CIDR pieraksts, piemēram 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ml.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR നൊട്ടേഷൻ പിന്തുണയ്ക്കുന്നു, ഉദാഹരണത്തിന് 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/nb.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR-notasjon støttes, for eksempel 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/nl.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR-notatie wordt ondersteund, bijv. 192.168.1.0/24"),
         ("Continue", "Doorgaan"),
         ("Browser didn't open? Use the url below to sign in.", "Is de browser niet geopend? Gebruik onderstaande URL om in te loggen."),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/pl.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Obsługiwana jest notacja CIDR, na przykład 192.168.1.0/24"),
         ("Continue", "Kontynuuj"),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/pt_PT.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "A notação CIDR é suportada, por exemplo 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ptbr.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "A notação CIDR é suportada, por exemplo 192.168.1.0/24"),
         ("Continue", "Continuar"),
         ("Browser didn't open? Use the url below to sign in.", "O navegador não foi aberto? Use a URL abaixo para fazer login."),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ro.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Notația CIDR este acceptată, de exemplu 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ru.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Поддерживается нотация CIDR, например 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/sc.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Sa notatzione CIDR est suportada, pro esempru 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/sk.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Je podporovaný zápis CIDR, napríklad 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/sl.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Podprt je zapis CIDR, na primer 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/sq.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Mbështetet shënimi CIDR, për shembull 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/sr.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Podržan je CIDR zapis, na primer 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/sv.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR-notation stöds, till exempel 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/ta.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR குறியீடு ஆதரிக்கப்படுகிறது, எடுத்துக்காட்டாக 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/template.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", ""),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/th.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "รองรับรูปแบบ CIDR เช่น 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/tr.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "CIDR gösterimi desteklenir, örneğin 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/tw.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "支援 CIDR 寫法，例如 192.168.1.0/24"),
         ("Continue", "繼續"),
         ("Browser didn't open? Use the url below to sign in.", "瀏覽器未開啟？請使用下方網址登入。"),
+        ("Lock canvas", "鎖定畫布"),
     ].iter().cloned().collect();
 }

src/lang/uk.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Підтримується нотація CIDR, наприклад 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }

src/lang/vi.rs

@@ -767,5 +767,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("whitelist_cidr_tip", "Hỗ trợ ký hiệu CIDR, ví dụ 192.168.1.0/24"),
         ("Continue", ""),
         ("Browser didn't open? Use the url below to sign in.", ""),
+        ("Lock canvas", ""),
     ].iter().cloned().collect();
 }