[flutter_releases] Flutter 1.22.2 framework cherrypicks (#68135)

* [flutter_tools] support Android Studio 4.1 on Windows (#67992)

Android Studio 4.1 moved the location of the .home file on Windows which is used to located the install directory. This functionality is important because it is how we locate and discover the Android SDK functionality, as well as the appropriate JRE.

fixes #67986

* [gestures] make stylus pointer types use touch pan/drag slop (#67885)

* Update engine cherrypicks

* pin customer_testing and add back windows to cirrus

Co-authored-by: Jonah Williams <jonahwilliams@google.com>

.cirrus.yml

@@ -231,6 +231,7 @@ task:
       script:
         - rm -rf bin/cache/pkg/tests
         - git clone https://github.com/flutter/tests.git bin/cache/pkg/tests
+        - (cd bin/cache/pkg/tests; git checkout f1c35d57db5f0c1dd31ae3e0f73a18891343cd60)
         - dart --enable-asserts dev/customer_testing/run_tests.dart --skip-on-fetch-failure --skip-template bin/cache/pkg/tests/registry/*.test
 
     # firebase_test_lab_tests are linux-only
@@ -347,6 +348,20 @@ task:
         CPU: 4
         MEMORY: 6G
 
+    - name: customer_testing-windows
+      environment:
+        # As of December 2019, the customer_testing-windows shard got faster with more CPUs up to 4
+        # CPUs (which requires >=4G RAM), and needed at least 2G of RAM to not run out of memory.
+        CPU: 4
+        MEMORY: 4G
+      script:
+        - CMD /S /C "IF EXIST "bin\cache\pkg\tests\" RMDIR /S /Q bin\cache\pkg\tests"
+        - git clone https://github.com/flutter/tests.git bin\cache\pkg\tests
+        - cd bin\cache\pkg\tests
+        - git checkout f1c35d57db5f0c1dd31ae3e0f73a18891343cd60
+        - cd ..\..\..\..
+        - dart --enable-asserts dev\customer_testing\run_tests.dart --skip-on-fetch-failure --skip-template bin/cache/pkg/tests/registry/*.test
+
 # MACOS SHARDS
 # Mac doesn't use caches because they apparently take longer to populate and save
 # than just fetching the data in the first place.
@@ -473,6 +488,7 @@ task:
         - ulimit -S -n 2048 # https://github.com/flutter/flutter/issues/2976
         - rm -rf bin/cache/pkg/tests
         - git clone https://github.com/flutter/tests.git bin/cache/pkg/tests
+        - (cd bin/cache/pkg/tests; git checkout f1c35d57db5f0c1dd31ae3e0f73a18891343cd60)
         - dart --enable-asserts dev/customer_testing/run_tests.dart --skip-on-fetch-failure --skip-template bin/cache/pkg/tests/registry/*.test
 
     - name: deploy_gallery-macos # linux- and macos- only

bin/internal/engine.version

@@ -1 +1 @@
-75bef9f6c8ac2ed4e1e04cdfcd88b177d9f1850d
+b8752bbfff0419c8bf616b602bc59fd28f6a3d1b

packages/flutter/lib/src/gestures/events.dart

@@ -2228,9 +2228,9 @@ class PointerCancelEvent extends PointerEvent {
 double computeHitSlop(PointerDeviceKind kind) {
   switch (kind) {
     case PointerDeviceKind.mouse:
+      return kPrecisePointerHitSlop;
     case PointerDeviceKind.stylus:
     case PointerDeviceKind.invertedStylus:
-      return kPrecisePointerHitSlop;
     case PointerDeviceKind.unknown:
     case PointerDeviceKind.touch:
       return kTouchSlop;
@@ -2241,9 +2241,9 @@ double computeHitSlop(PointerDeviceKind kind) {
 double computePanSlop(PointerDeviceKind kind) {
   switch (kind) {
     case PointerDeviceKind.mouse:
+      return kPrecisePointerPanSlop;
     case PointerDeviceKind.stylus:
     case PointerDeviceKind.invertedStylus:
-      return kPrecisePointerPanSlop;
     case PointerDeviceKind.unknown:
     case PointerDeviceKind.touch:
       return kPanSlop;
@@ -2254,9 +2254,9 @@ double computePanSlop(PointerDeviceKind kind) {
 double computeScaleSlop(PointerDeviceKind kind) {
   switch (kind) {
     case PointerDeviceKind.mouse:
+      return kPrecisePointerScaleSlop;
     case PointerDeviceKind.stylus:
     case PointerDeviceKind.invertedStylus:
-      return kPrecisePointerScaleSlop;
     case PointerDeviceKind.unknown:
     case PointerDeviceKind.touch:
       return kScaleSlop;

packages/flutter/test/gestures/events_test.dart

@@ -40,20 +40,20 @@ void main() {
 
   test('computed hit slop values are based on pointer device kind', () {
     expect(computeHitSlop(PointerDeviceKind.mouse), kPrecisePointerHitSlop);
-    expect(computeHitSlop(PointerDeviceKind.stylus), kPrecisePointerHitSlop);
-    expect(computeHitSlop(PointerDeviceKind.invertedStylus), kPrecisePointerHitSlop);
+    expect(computeHitSlop(PointerDeviceKind.stylus), kTouchSlop);
+    expect(computeHitSlop(PointerDeviceKind.invertedStylus), kTouchSlop);
     expect(computeHitSlop(PointerDeviceKind.touch), kTouchSlop);
     expect(computeHitSlop(PointerDeviceKind.unknown), kTouchSlop);
 
     expect(computePanSlop(PointerDeviceKind.mouse), kPrecisePointerPanSlop);
-    expect(computePanSlop(PointerDeviceKind.stylus), kPrecisePointerPanSlop);
-    expect(computePanSlop(PointerDeviceKind.invertedStylus), kPrecisePointerPanSlop);
+    expect(computePanSlop(PointerDeviceKind.stylus), kPanSlop);
+    expect(computePanSlop(PointerDeviceKind.invertedStylus), kPanSlop);
     expect(computePanSlop(PointerDeviceKind.touch), kPanSlop);
     expect(computePanSlop(PointerDeviceKind.unknown), kPanSlop);
 
     expect(computeScaleSlop(PointerDeviceKind.mouse), kPrecisePointerScaleSlop);
-    expect(computeScaleSlop(PointerDeviceKind.stylus), kPrecisePointerScaleSlop);
-    expect(computeScaleSlop(PointerDeviceKind.invertedStylus), kPrecisePointerScaleSlop);
+    expect(computeScaleSlop(PointerDeviceKind.stylus), kScaleSlop);
+    expect(computeScaleSlop(PointerDeviceKind.invertedStylus), kScaleSlop);
     expect(computeScaleSlop(PointerDeviceKind.touch), kScaleSlop);
     expect(computeScaleSlop(PointerDeviceKind.unknown), kScaleSlop);
   });

packages/flutter_tools/lib/src/android/android_studio.dart

@@ -260,6 +260,29 @@ class AndroidStudio implements Comparable<AndroidStudio> {
         }
       }
     }
+    // 4.1 has a different location for AndroidStudio installs on Windows.
+    if (globals.platform.isWindows) {
+      final File homeDot = globals.fs.file(globals.fs.path.join(
+        globals.platform.environment['LOCALAPPDATA'],
+        'Google',
+        'AndroidStudio4.1',
+        '.home',
+      ));
+      if (homeDot.existsSync()) {
+        final String installPath = homeDot.readAsStringSync();
+        if (globals.fs.isDirectorySync(installPath)) {
+          final AndroidStudio studio = AndroidStudio(
+            installPath,
+            version: Version(4, 1, 0),
+            studioAppName: 'Android Studio 4.1',
+          );
+          if (studio != null && !_hasStudioAt(studio.directory, newerThan: studio.version)) {
+            studios.removeWhere((AndroidStudio other) => other.directory == studio.directory);
+            studios.add(studio);
+          }
+        }
+      }
+    }
 
     final String configuredStudioDir = globals.config.getValue('android-studio-dir') as String;
     if (configuredStudioDir != null && !_hasStudioAt(configuredStudioDir)) {

packages/flutter_tools/test/general.shard/android/android_studio_test.dart

@@ -6,6 +6,7 @@ import 'package:file/memory.dart';
 import 'package:flutter_tools/src/android/android_studio.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/platform.dart';
+import 'package:flutter_tools/src/base/version.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/ios/plist_parser.dart';
 import 'package:mockito/mockito.dart';
@@ -33,6 +34,13 @@ final Platform linuxPlatform = FakePlatform(
   environment: <String, String>{'HOME': homeLinux},
 );
 
+final Platform windowsPlatform = FakePlatform(
+  operatingSystem: 'windows',
+  environment: <String, String>{
+    'LOCALAPPDATA': 'C:\\Users\\Dash\\AppData\\Local',
+  }
+);
+
 class MockPlistUtils extends Mock implements PlistParser {}
 
 Platform macPlatform() {
@@ -177,4 +185,28 @@ void main() {
       PlistParser: () => plistUtils,
     });
   });
+
+  FileSystem windowsFileSystem;
+
+  setUp(() {
+    windowsFileSystem = MemoryFileSystem.test(style: FileSystemStyle.windows);
+  });
+
+  testUsingContext('Can discover Android Studio 4.1 location on Windows', () {
+    windowsFileSystem.file('C:\\Users\\Dash\\AppData\\Local\\Google\\AndroidStudio4.1\\.home')
+      ..createSync(recursive: true)
+      ..writeAsStringSync('C:\\Program Files\\AndroidStudio');
+    windowsFileSystem
+      .directory('C:\\Program Files\\AndroidStudio')
+      .createSync(recursive: true);
+
+    final AndroidStudio studio = AndroidStudio.allInstalled().single;
+
+    expect(studio.version, Version(4, 1, 0));
+    expect(studio.studioAppName, 'Android Studio 4.1');
+  }, overrides: <Type, Generator>{
+    Platform: () => windowsPlatform,
+    FileSystem: () => windowsFileSystem,
+    ProcessManager: () => FakeProcessManager.any(),
+  });
 }