Add initial rendering support for NSHostingView

[Mx-Iris]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces initial support for rendering in NSHostingView by adding temporary layout values, new environment parameters, and updated view creation logic across the rendering and hosting integration layers.

• Added temporary hard-coded frame assignments for macOS and iOS in RendererLeafView.
• Introduced macOS-specific opaqueBackground handling and a new initializer in the DisplayList view renderer.
• Enhanced NSHostingView rendering logic and integrated new AppKit view implementations including NSProjectionView, NSInheritedView, and NSGraphicsView.

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
Sources/OpenSwiftUICore/Render/RendererLeafView.swift	Temporary hard-coded frame values added for macOS and iOS.
Sources/OpenSwiftUICore/Render/DisplayList/DisplayListViewRenderer.swift	Added opaqueBackground property and new initializer for macOS.
Sources/OpenSwiftUI/Integration/Render/AppKit/NSViewPlatformViewDefinition.swift	Updated view creation logic with switch cases.
Sources/OpenSwiftUI/Integration/Hosting/AppKit/View/NSProjectionView.swift	New NSProjectionView implementation.
Sources/OpenSwiftUI/Integration/Hosting/AppKit/View/NSInheritedView.swift	New NSInheritedView implementation.
Sources/OpenSwiftUI/Integration/Hosting/AppKit/View/NSHostingView.swift	Enhanced rendering flow and display list update logic.
Sources/OpenSwiftUI/Integration/Hosting/AppKit/View/NSGraphicsView.swift	Added new NSGraphicsView implementation.
Sources/COpenSwiftUI/QuartzCore/CAChameleonLayer.m & CAChameleonLayer.h	Added CAChameleonLayer implementation.
Sources/COpenSwiftUI/AppKit/OpenSwiftUI+NSView.m & OpenSwiftUI+NSView.h	Added NSView category with a setFlipped declaration.

Comments suppressed due to low confidence (1)

Sources/COpenSwiftUI/AppKit/OpenSwiftUI+NSView.h:23

• [nitpick] The method name 'setFlipped:' may be confused with NSView's built-in computed property 'isFlipped'. Consider renaming it to more clearly indicate its intended behavior.

- (void)setFlipped:(BOOL)flipped;

[Copilot]

The temporary hard-coded frame values may hinder adaptability across different screen sizes. Consider deferring to the layout system or using configurable parameters once implemented.

Suggested change

	item.frame = CGRect(x: 0, y: 0, width: 500, height: 300)
	#elseif os(iOS)
	item.frame = CGRect(x: 0, y: 100.333, width: 402, height: 739)
	let defaultSize = CGSize(width: 500, height: 300)
	item.frame = CGRect(origin: .zero, size: proposedSize.or(defaultSize))
	#elseif os(iOS)
	let defaultSize = CGSize(width: 402, height: 739)
	item.frame = CGRect(origin: CGPoint(x: 0, y: 100.333), size: proposedSize.or(defaultSize))

[Copilot]

[nitpick] The nested render() function increases the complexity of renderDisplayList. Consider extracting it into a separate method to improve readability and maintainability.

Suggested change

	func render() -> Time {
	private func renderDisplayListSynchronously(
	list: DisplayList,
	time: Time,
	nextTime: Time,
	version: DisplayList.Version,
	maxVersion: DisplayList.Version
	) -> Time {

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 93 lines in your changes missing coverage. Please review.

Project coverage is 22.28%. Comparing base (8eb03b6) to head (6967387).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
...ntegration/Hosting/AppKit/View/NSHostingView.swift	0.00%	38 Missing ⚠️
...n/Render/AppKit/NSViewPlatformViewDefinition.swift	0.00%	33 Missing ⚠️
...tegration/Hosting/AppKit/View/NSGraphicsView.swift	0.00%	5 Missing ⚠️
...egration/Hosting/AppKit/View/NSInheritedView.swift	0.00%	5 Missing ⚠️
...gration/Hosting/AppKit/View/NSProjectionView.swift	0.00%	5 Missing ⚠️
...e/Render/DisplayList/DisplayListViewRenderer.swift	0.00%	4 Missing ⚠️
...rces/OpenSwiftUICore/Render/RendererLeafView.swift	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #291      +/-   ##
==========================================
- Coverage   22.38%   22.28%   -0.10%     
==========================================
  Files         343      346       +3     
  Lines       16246    16333      +87     
==========================================
+ Hits         3636     3640       +4     
- Misses      12610    12693      +83     

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