Add iOS platform (refactor Mac into shared Apple platform impl)

Source/Engine/Platform/iOS/iOSWindow.cpp

@@ -0,0 +1,212 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+#if PLATFORM_IOS
+
+#include "../Window.h"
+#include "Engine/Platform/Apple/AppleUtils.h"
+#include "Engine/Core/Log.h"
+#include "Engine/Input/Input.h"
+#include "Engine/Graphics/RenderTask.h"
+#include <UIKit/UIKit.h>
+#include <QuartzCore/CAMetalLayer.h>
+
+@interface iOSUIWindow : UIWindow
+{
+}
+@end
+
+@implementation iOSUIWindow
+
+@end
+
+@interface iOSUIViewController : UIViewController
+
+@end
+
+@interface iOSUIView : UIView
+
+@property iOSWindow* window;
+
+@end
+
+@implementation iOSUIView
+
++(Class) layerClass { return [CAMetalLayer class]; }
+
+- (void)setFrame:(CGRect)frame
+{
+    [super setFrame:frame];
+    if (!_window)
+        return;
+    float scale = [[UIScreen mainScreen] scale];
+    _window->CheckForResize((float)frame.size.width * scale, (float)frame.size.height * scale);
+}
+
+@end
+
+@implementation iOSUIViewController
+{
+}
+
+- (BOOL)prefersHomeIndicatorAutoHidden
+{
+    return YES;
+}
+
+- (BOOL)prefersStatusBarHidden
+{
+    return YES;
+}
+
+ -(UIStatusBarAnimation)preferredStatusBarUpdateAnimation
+{
+    return UIStatusBarAnimationSlide;
+}
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+}
+
+@end
+
+iOSWindow::iOSWindow(const CreateWindowSettings& settings)
+    : WindowBase(settings)
+{
+    // Fullscreen by default
+	CGRect frame = [[UIScreen mainScreen] bounds];
+	float scale = [[UIScreen mainScreen] scale];
+    _clientSize = Float2((float)frame.size.width * scale, (float)frame.size.height * scale);
+
+    // Setup view
+	_view = [[iOSUIView alloc] initWithFrame:frame];
+	iOSUIView* v = (iOSUIView*)_view;
+	[v resignFirstResponder];
+	[v setNeedsDisplay];
+	[v setHidden:NO];
+	[v setOpaque:YES];
+	[v setAutoResizeDrawable:YES];
+	v.backgroundColor = [UIColor clearColor];
+	v.window = this;
+	
+	// Setp view controller
+	_viewController = [[iOSUIViewController alloc] init];
+	iOSUIViewController* vc = (iOSUIViewController*)_viewController;
+	[vc setView:v];
+	[vc setNeedsUpdateOfHomeIndicatorAutoHidden];
+	[vc setNeedsStatusBarAppearanceUpdate];
+
+    // Setup window
+	_window = [[iOSUIWindow alloc] initWithFrame:frame];
+	iOSUIWindow* w = (iOSUIWindow*)_window;
+	[w setRootViewController:vc];
+	[w setContentMode:UIViewContentModeScaleToFill];
+	[w makeKeyAndVisible];
+	[w setBounds:frame];
+	w.backgroundColor = [UIColor clearColor];
+}
+
+iOSWindow::~iOSWindow()
+{
+	[(iOSUIWindow*)_window release];
+	[(iOSUIView*)_view release];
+	[(iOSUIViewController*)_viewController release];
+
+	_window = nullptr;
+	_view = nullptr;
+	_layer = nullptr;
+}
+
+void iOSWindow::CheckForResize(float width, float height)
+{
+    const Float2 clientSize(width, height);
+	if (clientSize != _clientSize)
+	{
+        _clientSize = clientSize;
+		OnResize(width, height);
+	}
+}
+
+void* iOSWindow::GetNativePtr() const
+{
+    return _window;
+}
+
+void iOSWindow::Show()
+{
+    if (!_visible)
+    {
+        InitSwapChain();
+        if (_showAfterFirstPaint)
+        {
+            if (RenderTask)
+                RenderTask->Enabled = true;
+            return;
+        }
+
+        // Show
+        _focused = true;
+
+        // Base
+        WindowBase::Show();
+    }
+}
+
+bool iOSWindow::IsClosed() const
+{
+    return _window != nullptr;
+}
+
+bool iOSWindow::IsForegroundWindow() const
+{
+    return Platform::GetHasFocus() && IsFocused();
+}
+
+void iOSWindow::BringToFront(bool force)
+{
+    Focus();
+}
+
+void iOSWindow::SetIsFullscreen(bool isFullscreen)
+{
+}
+
+void iOSWindow::SetClientBounds(const Rectangle& clientArea)
+{
+}
+
+void iOSWindow::SetPosition(const Float2& position)
+{
+}
+
+Float2 iOSWindow::GetPosition() const
+{
+    return Float2::Zero;
+}
+
+Float2 iOSWindow::GetSize() const
+{
+    return _clientSize;
+}
+
+Float2 iOSWindow::GetClientSize() const
+{
+	return _clientSize;
+}
+
+Float2 iOSWindow::ScreenToClient(const Float2& screenPos) const
+{
+    return screenPos;
+}
+
+Float2 iOSWindow::ClientToScreen(const Float2& clientPos) const
+{
+    return clientPos;
+}
+
+void iOSWindow::SetTitle(const StringView& title)
+{
+    _title = title;
+}
+
+#endif