[iOS] Add YogaKit implementation using C#
This commit is contained in:
Rui Marinho
@@ -5,6 +5,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.Yoga.iOS", "Facebo
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EndProject
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.Yoga.iOS.Test", "Facebook.Yoga.iOS.Test\Facebook.Yoga.iOS.Test.csproj", "{3B27656A-129D-4779-BDAD-1A088DFDD9C5}"
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.Yoga.iOS.Test", "Facebook.Yoga.iOS.Test\Facebook.Yoga.iOS.Test.csproj", "{3B27656A-129D-4779-BDAD-1A088DFDD9C5}"
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EndProject
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.YogaKit.iOS", "Facebook.YogaKit.iOS\Facebook.YogaKit.iOS.csproj", "{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}"
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EndProject
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Global
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Debug|Any CPU = Debug|Any CPU
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@@ -39,5 +41,17 @@ Global
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{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|iPhoneSimulator.Build.0 = Release|iPhoneSimulator
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{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|iPhoneSimulator.Build.0 = Release|iPhoneSimulator
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{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhone.ActiveCfg = Debug|iPhone
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{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhone.ActiveCfg = Debug|iPhone
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{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhone.Build.0 = Debug|iPhone
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{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhone.Build.0 = Debug|iPhone
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|Any CPU.Build.0 = Release|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhone.ActiveCfg = Release|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhone.Build.0 = Release|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhone.ActiveCfg = Debug|Any CPU
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{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhone.Build.0 = Debug|Any CPU
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EndGlobalSection
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EndGlobalSection
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EndGlobal
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EndGlobal
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@@ -0,0 +1,67 @@
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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}</ProjectGuid>
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<ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<OutputType>Library</OutputType>
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<RootNamespace>Facebook.YogaKit.iOS</RootNamespace>
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<AssemblyName>Facebook.YogaKit.iOS</AssemblyName>
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<IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug</OutputPath>
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<DefineConstants>DEBUG;</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<CodesignKey>iPhone Developer</CodesignKey>
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<MtouchDebug>true</MtouchDebug>
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<MtouchFastDev>true</MtouchFastDev>
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<MtouchProfiling>true</MtouchProfiling>
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<MtouchUseSGen>true</MtouchUseSGen>
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<MtouchUseRefCounting>true</MtouchUseRefCounting>
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<IOSDebuggerPort>51303</IOSDebuggerPort>
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<DeviceSpecificBuild>false</DeviceSpecificBuild>
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<MtouchLink></MtouchLink>
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<MtouchHttpClientHandler></MtouchHttpClientHandler>
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<MtouchTlsProvider></MtouchTlsProvider>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release</OutputPath>
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<DefineConstants></DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<CodesignKey>iPhone Developer</CodesignKey>
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<MtouchUseSGen>true</MtouchUseSGen>
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<MtouchUseRefCounting>true</MtouchUseRefCounting>
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<MtouchLink>SdkOnly</MtouchLink>
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<MtouchHttpClientHandler></MtouchHttpClientHandler>
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<MtouchTlsProvider></MtouchTlsProvider>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Xml" />
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<Reference Include="System.Core" />
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<Reference Include="Xamarin.iOS" />
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</ItemGroup>
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<ItemGroup>
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<Folder Include="Resources\" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="YogaKit.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\Facebook.Yoga.iOS.csproj">
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<Project>{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}</Project>
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<Name>Facebook.Yoga.iOS</Name>
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</ProjectReference>
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</ItemGroup>
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<Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
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</Project>
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@@ -0,0 +1,26 @@
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using System.Reflection;
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using System.Runtime.CompilerServices;
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// Information about this assembly is defined by the following attributes.
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// Change them to the values specific to your project.
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[assembly: AssemblyTitle("Facebook.YogaKit.iOS")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("")]
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[assembly: AssemblyCopyright("rmarinho")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
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// The form "{Major}.{Minor}.*" will automatically update the build and revision,
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// and "{Major}.{Minor}.{Build}.*" will update just the revision.
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[assembly: AssemblyVersion("1.0.*")]
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// The following attributes are used to specify the signing key for the assembly,
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// if desired. See the Mono documentation for more information about signing.
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//[assembly: AssemblyDelaySign(false)]
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//[assembly: AssemblyKeyFile("")]
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262
csharp/Facebook.Yoga/ios/Facebook.YogaKit.iOS/YogaKit.cs
Normal file
262
csharp/Facebook.Yoga/ios/Facebook.YogaKit.iOS/YogaKit.cs
Normal file
@@ -0,0 +1,262 @@
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using CoreGraphics;
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using Facebook.Yoga;
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using Foundation;
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using UIKit;
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namespace Facebook.YogaKit.iOS
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{
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class YGNodeBridge : NSObject
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{
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internal WeakReference<UIView> viewRef;
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internal YogaNode node;
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public YGNodeBridge()
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{
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node = new YogaNode();
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}
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public void SetContext(UIView view)
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{
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viewRef = new WeakReference<UIView>(view);
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YogaKit.Bridges.Add(node, this);
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}
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}
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public static class YogaKit
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{
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internal static Dictionary<YogaNode, YGNodeBridge> Bridges = new Dictionary<YogaNode, YGNodeBridge>();
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static NSString YogaNodeKey = new NSString(nameof(GetYogaNode));
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static NSString UsesYogaKey = new NSString(nameof(UsesYoga));
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static NSString IncludeYogaKey = new NSString(nameof(UsesYoga));
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public static void UsesYoga(this UIView view, bool usesYoga)
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{
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var value = NSNumber.FromBoolean(usesYoga);
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objc_setAssociatedObject(view.Handle, UsesYogaKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
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}
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public static bool GetUsesYoga(this UIView view)
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{
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var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, UsesYogaKey.Handle)) as NSNumber;
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return value == null ? false : value.BoolValue;
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}
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public static void IncludeYogaLayout(this UIView view, bool includeInLayout)
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{
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var value = NSNumber.FromBoolean(includeInLayout);
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objc_setAssociatedObject(view.Handle, IncludeYogaKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
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}
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public static bool GetIncludeYogaLayout(this UIView view)
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{
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var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, IncludeYogaKey.Handle)) as NSNumber;
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return value == null ? true : value.BoolValue;
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}
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public static void YogaWidth(this UIView view, nfloat width)
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{
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var node = GetYogaNode(view);
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node.Width = (float)width;
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}
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public static void YogaHeight(this UIView view, nfloat height)
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{
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var node = GetYogaNode(view);
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node.Height = (float)height;
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}
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public static void YogaAlignItems(this UIView view, Yoga.YogaAlign align)
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{
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var node = GetYogaNode(view);
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node.AlignItems = align;
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}
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public static void YogaJustify(this UIView view, Yoga.YogaJustify justify)
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{
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var node = GetYogaNode(view);
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node.JustifyContent = justify;
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}
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public static void YogaApplyLayout(this UIView view)
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{
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CalculateLayoutWithSize(view, view.Bounds.Size);
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ApplyLayoutToViewHierarchy(view);
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}
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static CGSize CalculateLayoutWithSize(UIView view, CGSize size)
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{
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if (!view.GetUsesYoga())
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{
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System.Diagnostics.Debug.WriteLine("Doesn't use Yoga");
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}
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AttachNodesFromViewHierachy(view);
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var node = GetYogaNode(view);
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node.Width = (float)size.Width;
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node.Height = (float)size.Height;
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node.CalculateLayout();
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return new CGSize { Width = node.LayoutWidth, Height = node.LayoutHeight };
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}
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static long MeasureView(YogaNode node, float width, YogaMeasureMode widthMode, float height, YogaMeasureMode heightMode)
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{
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var constrainedWidth = (widthMode == YogaMeasureMode.Undefined) ? nfloat.MaxValue : width;
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var constrainedHeight = (heightMode == YogaMeasureMode.Undefined) ? nfloat.MaxValue : height;
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UIView view = null;
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if (Bridges.ContainsKey(node))
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Bridges[node].viewRef.TryGetTarget(out view);
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var sizeThatFits = view.SizeThatFits(new CGSize(constrainedWidth, constrainedHeight));
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var finalWidth = SanitizeMeasurement(constrainedWidth, sizeThatFits.Width, widthMode);
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var finalHeight = SanitizeMeasurement(constrainedHeight, sizeThatFits.Height, heightMode);
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return MeasureOutput.Make(finalWidth, finalHeight);
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}
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static float SanitizeMeasurement(nfloat constrainedSize, nfloat measuredSize, YogaMeasureMode measureMode)
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{
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float result;
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if (measureMode == YogaMeasureMode.Exactly)
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{
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result = (float)constrainedSize;
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}
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else if (measureMode == YogaMeasureMode.AtMost)
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{
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result = (float)Math.Min(constrainedSize, measuredSize);
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}
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else {
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result = (float)measuredSize;
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}
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return result;
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}
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static void ApplyLayoutToViewHierarchy(UIView view)
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{
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if (!view.GetIncludeYogaLayout())
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return;
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var node = GetYogaNode(view);
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CGPoint topLeft = new CGPoint(node.LayoutX, node.LayoutY);
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CGPoint bottomRight = new CGPoint(topLeft.X + node.LayoutWidth, topLeft.Y + node.LayoutHeight);
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view.Frame = new CGRect(RoundPixelValue(topLeft.X), RoundPixelValue(topLeft.Y), RoundPixelValue(bottomRight.X) - RoundPixelValue(topLeft.X), RoundPixelValue(bottomRight.Y) - RoundPixelValue(topLeft.Y));
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bool isLeaf = !view.GetUsesYoga() || view.Subviews.Length == 0;
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if (!isLeaf)
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{
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for (int i = 0; i < view.Subviews.Length; i++)
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{
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ApplyLayoutToViewHierarchy(view.Subviews[i]);
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}
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}
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}
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static double RoundPixelValue(nfloat value)
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{
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nfloat scale = UIScreen.MainScreen.Scale;
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return Math.Round(value * scale) / scale;
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}
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static void AttachNodesFromViewHierachy(UIView view)
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{
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||||||
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var node = GetYogaNode(view);
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// Only leaf nodes should have a measure function
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if (!view.GetUsesYoga() || view.Subviews.Length == 0)
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{
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node.SetMeasureFunction(MeasureView);
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RemoveAllChildren(node);
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}
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else
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{
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node.SetMeasureFunction(null);
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// Create a list of all the subviews that we are going to use for layout.
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var subviewsToInclude = new List<UIView>();
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foreach (var subview in view.Subviews)
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{
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if (subview.GetIncludeYogaLayout())
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||||||
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{
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||||||
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subviewsToInclude.Add(subview);
|
||||||
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}
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||||||
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}
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||||||
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||||||
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var shouldReconstructChildList = false;
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||||||
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if (node.Count != subviewsToInclude.Count)
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||||||
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{
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||||||
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shouldReconstructChildList = true;
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||||||
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}
|
||||||
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else
|
||||||
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{
|
||||||
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for (int i = 0; i < subviewsToInclude.Count; i++)
|
||||||
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{
|
||||||
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if (node[i] != GetYogaNode(subviewsToInclude[i]))
|
||||||
|
{
|
||||||
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shouldReconstructChildList = true;
|
||||||
|
break;
|
||||||
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}
|
||||||
|
}
|
||||||
|
}
|
||||||
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|
||||||
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if (shouldReconstructChildList)
|
||||||
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{
|
||||||
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RemoveAllChildren(node);
|
||||||
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|
||||||
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for (int i = 0; i < subviewsToInclude.Count; i++)
|
||||||
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{
|
||||||
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var subView = subviewsToInclude[i];
|
||||||
|
node.Insert(i, subView.GetYogaNode());
|
||||||
|
AttachNodesFromViewHierachy(subView);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void RemoveAllChildren(YogaNode node)
|
||||||
|
{
|
||||||
|
if (node == null)
|
||||||
|
return;
|
||||||
|
|
||||||
|
while (node.Count > 0)
|
||||||
|
{
|
||||||
|
node.Clear();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static YogaNode GetYogaNode(this UIView view)
|
||||||
|
{
|
||||||
|
var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, YogaNodeKey.Handle)) as YGNodeBridge;
|
||||||
|
if (value == null)
|
||||||
|
{
|
||||||
|
value = new YGNodeBridge();
|
||||||
|
value.SetContext(view);
|
||||||
|
objc_setAssociatedObject(view.Handle, YogaNodeKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
|
||||||
|
}
|
||||||
|
return value.node;
|
||||||
|
}
|
||||||
|
|
||||||
|
[DllImport("/usr/lib/libobjc.dylib")]
|
||||||
|
static extern void objc_setAssociatedObject(IntPtr @object, IntPtr key, IntPtr value, AssociationPolicy policy);
|
||||||
|
|
||||||
|
[DllImport("/usr/lib/libobjc.dylib")]
|
||||||
|
static extern IntPtr objc_getAssociatedObject(IntPtr @object, IntPtr key);
|
||||||
|
|
||||||
|
enum AssociationPolicy
|
||||||
|
{
|
||||||
|
ASSIGN = 0,
|
||||||
|
RETAIN_NONATOMIC = 1,
|
||||||
|
COPY_NONATOMIC = 3,
|
||||||
|
RETAIN = 01401,
|
||||||
|
COPY = 01403,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user