Fix CAFrameRateRangeDefault unavailable on iOS 14

compose/ui/ui-uikit/src/iosMain/objc/CMPUIKitUtils/CMPUIKitUtils.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		55F0AA132F70000100ABC123 /* CMPFrameRateRange.m in Sources */ = {isa = PBXBuildFile; fileRef = 55F0AA122F70000100ABC123 /* CMPFrameRateRange.m */; };
 		99009B7A2F322B4700518C1F /* CMPMetalLayer.m in Sources */ = {isa = PBXBuildFile; fileRef = 99009B792F322B4700518C1F /* CMPMetalLayer.m */; };
 		99009B7B2F322B4700518C1F /* CMPMetalLayer.m in Sources */ = {isa = PBXBuildFile; fileRef = 99009B792F322B4700518C1F /* CMPMetalLayer.m */; };
 		991A97F72E1FB99300B47130 /* CMPScrollView.m in Sources */ = {isa = PBXBuildFile; fileRef = 991A97F62E1FB99300B47130 /* CMPScrollView.m */; };
@@ -79,6 +80,8 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		55F0AA112F70000100ABC123 /* CMPFrameRateRange.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = CMPFrameRateRange.h; sourceTree = "<group>"; };
+		55F0AA122F70000100ABC123 /* CMPFrameRateRange.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = CMPFrameRateRange.m; sourceTree = "<group>"; };
 		99009B782F322B4700518C1F /* CMPMetalLayer.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = CMPMetalLayer.h; sourceTree = "<group>"; };
 		99009B792F322B4700518C1F /* CMPMetalLayer.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = CMPMetalLayer.m; sourceTree = "<group>"; };
 		991A97F52E1FB99300B47130 /* CMPScrollView.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = CMPScrollView.h; sourceTree = "<group>"; };
@@ -176,6 +179,8 @@
 			children = (
 				C4C07E832F57037300A9DC94 /* CMPEditMenuCustomAction.h */,
 				C4C07E842F57037300A9DC94 /* CMPEditMenuCustomAction.m */,
+				55F0AA112F70000100ABC123 /* CMPFrameRateRange.h */,
+				55F0AA122F70000100ABC123 /* CMPFrameRateRange.m */,
 				C4C07E852F57037300A9DC94 /* CMPTextInputStringTokenizer.h */,
 				C4C07E862F57037300A9DC94 /* CMPTextInputStringTokenizer.m */,
 				C4C07E872F57037300A9DC94 /* CMPTextInputView.h */,
@@ -402,6 +407,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				55F0AA132F70000100ABC123 /* CMPFrameRateRange.m in Sources */,
 				997DFCDE2B18D135000B56B5 /* CMPViewController.m in Sources */,
 				9968C38B2D7892DF005E8DE4 /* CMPScreenEdgePanGestureRecognizer.m in Sources */,
 				EAB33E182C12E746002CFF44 /* CMPMetalDrawablesHandler.m in Sources */,

compose/ui/ui-uikit/src/iosMain/objc/CMPUIKitUtils/CMPUIKitUtils/CMPFrameRateRange.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface CMPFrameRateRangeDefault : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
++ (instancetype)new NS_UNAVAILABLE;
+
+/// Returns the default preferred frame rate for CADisplayLink on the current OS version.
+@property (class, nonatomic, readonly) float preferred;
+
+@end
+
+NS_ASSUME_NONNULL_END

compose/ui/ui-uikit/src/iosMain/objc/CMPUIKitUtils/CMPUIKitUtils/CMPFrameRateRange.m

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "CMPFrameRateRange.h"
+#import <QuartzCore/QuartzCore.h>
+
+@implementation CMPFrameRateRangeDefault
+
++ (float)preferred {
+    if (@available(iOS 15.0, *)) {
+        return CAFrameRateRangeDefault.preferred;
+    } else {
+        // `preferredFramesPerSecond = 0` is CADisplayLink's documented default
+        return 0.0f;
+    }
+}
+
+@end

compose/ui/ui-uikit/src/iosMain/objc/CMPUIKitUtils/CMPUIKitUtils/CMPUIKitUtils.h

@@ -24,6 +24,7 @@ FOUNDATION_EXPORT const unsigned char CMPUIKitUtilsVersionString[];
 
 #import "CMPAccessibilityElement.h"
 #import "CMPComposeContainerLifecycleDelegate.h"
+#import "CMPFrameRateRange.h"
 #import "CMPDragInteractionProxy.h"
 #import "CMPDrawable.h"
 #import "CMPDropInteractionProxy.h"

compose/ui/ui/src/iosMain/kotlin/androidx/compose/ui/window/DisplayLinkFrameRate.ios.kt

@@ -17,8 +17,8 @@
 package androidx.compose.ui.window
 
 import androidx.compose.ui.FrameRateCategory
+import androidx.compose.ui.uikit.utils.CMPFrameRateRangeDefault
 import platform.QuartzCore.CADisplayLink
-import platform.QuartzCore.CAFrameRateRangeDefault
 import platform.darwin.NSInteger
 
 /**
@@ -45,7 +45,7 @@ internal class DisplayLinkFrameRate(
 
     fun voteFrameRate(frameRate: Float, frameRateCategory: Float) {
         val frameRateCategoryValue = when (frameRateCategory) {
-            FrameRateCategory.Default.value -> CAFrameRateRangeDefault.preferred
+            FrameRateCategory.Default.value -> CMPFrameRateRangeDefault.preferred
             FrameRateCategory.Normal.value -> 60f
             FrameRateCategory.High.value -> maximumFramesPerSecond.toFloat()
             else -> Float.NaN
@@ -69,4 +69,4 @@ internal class DisplayLinkFrameRate(
             frameRateVote = Float.NaN
         }
     }
-}
+}