1 files changed, 543 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/uikit/SDL_uikitmodes.m b/contrib/SDL-3.2.8/src/video/uikit/SDL_uikitmodes.m
new file mode 100644
index 0000000..d3247db
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/uikit/SDL_uikitmodes.m
@@ -0,0 +1,543 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_UIKIT
+
+#include "SDL_uikitmodes.h"
+
+#include "../../events/SDL_events_c.h"
+
+#import <sys/utsname.h>
+
+@implementation SDL_UIKitDisplayData
+
+#ifndef SDL_PLATFORM_VISIONOS
+- (instancetype)initWithScreen:(UIScreen *)screen
+{
+    if (self = [super init]) {
+        self.uiscreen = screen;
+    }
+    return self;
+}
+@synthesize uiscreen;
+#endif
+
+@end
+
+@implementation SDL_UIKitDisplayModeData
+
+#ifndef SDL_PLATFORM_VISIONOS
+@synthesize uiscreenmode;
+#endif
+
+@end
+
+@interface SDL_DisplayWatch : NSObject
+@end
+
+#ifndef SDL_PLATFORM_VISIONOS
+@implementation SDL_DisplayWatch
+
++ (void)start
+{
+    NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
+
+    [center addObserver:self
+               selector:@selector(screenConnected:)
+                   name:UIScreenDidConnectNotification
+                 object:nil];
+    [center addObserver:self
+               selector:@selector(screenDisconnected:)
+                   name:UIScreenDidDisconnectNotification
+                 object:nil];
+}
+
++ (void)stop
+{
+    NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
+
+    [center removeObserver:self
+                      name:UIScreenDidConnectNotification
+                    object:nil];
+    [center removeObserver:self
+                      name:UIScreenDidDisconnectNotification
+                    object:nil];
+}
+
++ (void)screenConnected:(NSNotification *)notification
+{
+    UIScreen *uiscreen = [notification object];
+    UIKit_AddDisplay(uiscreen, true);
+}
+
++ (void)screenDisconnected:(NSNotification *)notification
+{
+    UIScreen *uiscreen = [notification object];
+    UIKit_DelDisplay(uiscreen, true);
+}
+
+@end
+#endif
+
+#ifndef SDL_PLATFORM_VISIONOS
+static bool UIKit_AllocateDisplayModeData(SDL_DisplayMode *mode,
+                                         UIScreenMode *uiscreenmode)
+{
+    SDL_UIKitDisplayModeData *data = nil;
+
+    if (uiscreenmode != nil) {
+        // Allocate the display mode data
+        data = [[SDL_UIKitDisplayModeData alloc] init];
+        if (!data) {
+            return SDL_OutOfMemory();
+        }
+
+        data.uiscreenmode = uiscreenmode;
+    }
+
+    mode->internal = (void *)CFBridgingRetain(data);
+
+    return true;
+}
+#endif
+
+static void UIKit_FreeDisplayModeData(SDL_DisplayMode *mode)
+{
+    if (mode->internal != NULL) {
+        CFRelease(mode->internal);
+        mode->internal = NULL;
+    }
+}
+
+#ifndef SDL_PLATFORM_VISIONOS
+static float UIKit_GetDisplayModeRefreshRate(UIScreen *uiscreen)
+{
+    return (float)uiscreen.maximumFramesPerSecond;
+}
+
+static bool UIKit_AddSingleDisplayMode(SDL_VideoDisplay *display, int w, int h,
+                                      UIScreen *uiscreen, UIScreenMode *uiscreenmode)
+{
+    SDL_DisplayMode mode;
+
+    SDL_zero(mode);
+    if (!UIKit_AllocateDisplayModeData(&mode, uiscreenmode)) {
+        return false;
+    }
+
+    mode.w = w;
+    mode.h = h;
+    mode.pixel_density = uiscreen.nativeScale;
+    mode.refresh_rate = UIKit_GetDisplayModeRefreshRate(uiscreen);
+    mode.format = SDL_PIXELFORMAT_ABGR8888;
+
+    if (SDL_AddFullscreenDisplayMode(display, &mode)) {
+        return true;
+    } else {
+        UIKit_FreeDisplayModeData(&mode);
+        return false;
+    }
+}
+
+static bool UIKit_AddDisplayMode(SDL_VideoDisplay *display, int w, int h,
+                                UIScreen *uiscreen, UIScreenMode *uiscreenmode, bool addRotation)
+{
+    if (!UIKit_AddSingleDisplayMode(display, w, h, uiscreen, uiscreenmode)) {
+        return false;
+    }
+
+    if (addRotation) {
+        // Add the rotated version
+        if (!UIKit_AddSingleDisplayMode(display, h, w, uiscreen, uiscreenmode)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+static CGSize GetUIScreenModeSize(UIScreen *uiscreen, UIScreenMode *mode)
+{
+    /* For devices such as iPhone 6/7/8 Plus, the UIScreenMode reported by iOS
+     * isn't the physical pixels of the display, but rather the point size times
+     * the scale. For example, on iOS 12.2 on iPhone 8 Plus the physical pixel
+     * resolution is 1080x1920, the size reported by mode.size is 1242x2208,
+     * the size in points is 414x736, the scale property is 3.0, and the
+     * nativeScale property is ~2.6087 (ie 1920.0 / 736.0).
+     *
+     * What we want for the mode size is the point size, and the pixel density
+     * is the native scale.
+     *
+     * Note that the iOS Simulator doesn't have this behavior for those devices.
+     * https://github.com/libsdl-org/SDL/issues/3220
+     */
+    CGSize size = mode.size;
+
+    size.width = SDL_round(size.width / uiscreen.scale);
+    size.height = SDL_round(size.height / uiscreen.scale);
+
+    return size;
+}
+
+bool UIKit_AddDisplay(UIScreen *uiscreen, bool send_event)
+{
+    UIScreenMode *uiscreenmode = uiscreen.currentMode;
+    CGSize size = GetUIScreenModeSize(uiscreen, uiscreenmode);
+    SDL_VideoDisplay display;
+    SDL_DisplayMode mode;
+
+    // Make sure the width/height are oriented correctly
+    if (UIKit_IsDisplayLandscape(uiscreen) != (size.width > size.height)) {
+        CGFloat height = size.width;
+        size.width = size.height;
+        size.height = height;
+    }
+
+    SDL_zero(mode);
+    mode.w = (int)size.width;
+    mode.h = (int)size.height;
+    mode.pixel_density = uiscreen.nativeScale;
+    mode.format = SDL_PIXELFORMAT_ABGR8888;
+    mode.refresh_rate = UIKit_GetDisplayModeRefreshRate(uiscreen);
+
+    if (!UIKit_AllocateDisplayModeData(&mode, uiscreenmode)) {
+        return false;
+    }
+
+    SDL_zero(display);
+#ifndef SDL_PLATFORM_TVOS
+    if (uiscreen == [UIScreen mainScreen]) {
+        // The natural orientation (used by sensors) is portrait
+        display.natural_orientation = SDL_ORIENTATION_PORTRAIT;
+    } else
+#endif
+    if (UIKit_IsDisplayLandscape(uiscreen)) {
+        display.natural_orientation = SDL_ORIENTATION_LANDSCAPE;
+    } else {
+        display.natural_orientation = SDL_ORIENTATION_PORTRAIT;
+    }
+    display.desktop_mode = mode;
+
+    display.HDR.SDR_white_level = 1.0f;
+    display.HDR.HDR_headroom = 1.0f;
+
+#ifndef SDL_PLATFORM_TVOS
+    if (@available(iOS 16.0, *)) {
+        if (uiscreen.currentEDRHeadroom > 1.0f) {
+            display.HDR.HDR_headroom = uiscreen.currentEDRHeadroom;
+        } else {
+            display.HDR.HDR_headroom = uiscreen.potentialEDRHeadroom;
+        }
+    }
+#endif // !SDL_PLATFORM_TVOS
+
+    // Allocate the display data
+#ifdef SDL_PLATFORM_VISIONOS
+    SDL_UIKitDisplayData *data = [[SDL_UIKitDisplayData alloc] init];
+#else
+    SDL_UIKitDisplayData *data = [[SDL_UIKitDisplayData alloc] initWithScreen:uiscreen];
+#endif
+    if (!data) {
+        UIKit_FreeDisplayModeData(&display.desktop_mode);
+        return SDL_OutOfMemory();
+    }
+
+    display.internal = (SDL_DisplayData *)CFBridgingRetain(data);
+    if (SDL_AddVideoDisplay(&display, send_event) == 0) {
+        return false;
+    }
+    return true;
+}
+#endif
+
+#ifdef SDL_PLATFORM_VISIONOS
+bool UIKit_AddDisplay(bool send_event){
+    CGSize size = CGSizeMake(SDL_XR_SCREENWIDTH, SDL_XR_SCREENHEIGHT);
+    SDL_VideoDisplay display;
+    SDL_DisplayMode mode;
+
+    SDL_zero(mode);
+    mode.w = (int)size.width;
+    mode.h = (int)size.height;
+    mode.pixel_density = 1;
+    mode.format = SDL_PIXELFORMAT_ABGR8888;
+    mode.refresh_rate = 60.0f;
+
+    display.natural_orientation = SDL_ORIENTATION_LANDSCAPE;
+
+    display.desktop_mode = mode;
+
+    SDL_UIKitDisplayData *data = [[SDL_UIKitDisplayData alloc] init];
+
+    if (!data) {
+        UIKit_FreeDisplayModeData(&display.desktop_mode);
+        return SDL_OutOfMemory();
+    }
+
+    display.internal = (SDL_DisplayData *)CFBridgingRetain(data);
+    if (SDL_AddVideoDisplay(&display, send_event) == 0) {
+        return false;
+    }
+    return true;
+}
+#endif
+
+#ifndef SDL_PLATFORM_VISIONOS
+
+void UIKit_DelDisplay(UIScreen *uiscreen, bool send_event)
+{
+    SDL_DisplayID *displays;
+    int i;
+
+    displays = SDL_GetDisplays(NULL);
+    if (displays) {
+        for (i = 0; displays[i]; ++i) {
+            SDL_VideoDisplay *display = SDL_GetVideoDisplay(displays[i]);
+            SDL_UIKitDisplayData *data = (__bridge SDL_UIKitDisplayData *)display->internal;
+
+            if (data && data.uiscreen == uiscreen) {
+                CFRelease(display->internal);
+                display->internal = NULL;
+                SDL_DelVideoDisplay(displays[i], send_event);
+                break;
+            }
+        }
+        SDL_free(displays);
+    }
+}
+
+bool UIKit_IsDisplayLandscape(UIScreen *uiscreen)
+{
+#ifndef SDL_PLATFORM_TVOS
+    if (uiscreen == [UIScreen mainScreen]) {
+        return UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
+    } else
+#endif // !SDL_PLATFORM_TVOS
+    {
+        CGSize size = uiscreen.bounds.size;
+        return (size.width > size.height);
+    }
+}
+#endif
+bool UIKit_InitModes(SDL_VideoDevice *_this)
+{
+    @autoreleasepool {
+#ifdef SDL_PLATFORM_VISIONOS
+        UIKit_AddDisplay(false);
+#else
+        for (UIScreen *uiscreen in [UIScreen screens]) {
+            if (!UIKit_AddDisplay(uiscreen, false)) {
+                return false;
+            }
+        }
+#endif
+
+#if !defined(SDL_PLATFORM_TVOS) && !defined(SDL_PLATFORM_VISIONOS)
+        SDL_OnApplicationDidChangeStatusBarOrientation();
+#endif
+
+#ifndef SDL_PLATFORM_VISIONOS
+        [SDL_DisplayWatch start];
+#endif
+    }
+
+    return true;
+}
+
+bool UIKit_GetDisplayModes(SDL_VideoDevice *_this, SDL_VideoDisplay *display)
+{
+#ifndef SDL_PLATFORM_VISIONOS
+    @autoreleasepool {
+        SDL_UIKitDisplayData *data = (__bridge SDL_UIKitDisplayData *)display->internal;
+
+        bool isLandscape = UIKit_IsDisplayLandscape(data.uiscreen);
+        bool addRotation = (data.uiscreen == [UIScreen mainScreen]);
+        NSArray *availableModes = nil;
+
+#ifdef SDL_PLATFORM_TVOS
+        addRotation = false;
+        availableModes = @[ data.uiscreen.currentMode ];
+#else
+        availableModes = data.uiscreen.availableModes;
+#endif
+
+        for (UIScreenMode *uimode in availableModes) {
+            CGSize size = GetUIScreenModeSize(data.uiscreen, uimode);
+            int w = (int)size.width;
+            int h = (int)size.height;
+
+            // Make sure the width/height are oriented correctly
+            if (isLandscape != (w > h)) {
+                int tmp = w;
+                w = h;
+                h = tmp;
+            }
+
+            UIKit_AddDisplayMode(display, w, h, data.uiscreen, uimode, addRotation);
+        }
+    }
+#endif
+    return true;
+}
+
+bool UIKit_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode)
+{
+#ifndef SDL_PLATFORM_VISIONOS
+    @autoreleasepool {
+        SDL_UIKitDisplayData *data = (__bridge SDL_UIKitDisplayData *)display->internal;
+
+#ifndef SDL_PLATFORM_TVOS
+        SDL_UIKitDisplayModeData *modedata = (__bridge SDL_UIKitDisplayModeData *)mode->internal;
+        [data.uiscreen setCurrentMode:modedata.uiscreenmode];
+#endif
+
+        if (data.uiscreen == [UIScreen mainScreen]) {
+            /* [UIApplication setStatusBarOrientation:] no longer works reliably
+             * in recent iOS versions, so we can't rotate the screen when setting
+             * the display mode. */
+            if (mode->w > mode->h) {
+                if (!UIKit_IsDisplayLandscape(data.uiscreen)) {
+                    return SDL_SetError("Screen orientation does not match display mode size");
+                }
+            } else if (mode->w < mode->h) {
+                if (UIKit_IsDisplayLandscape(data.uiscreen)) {
+                    return SDL_SetError("Screen orientation does not match display mode size");
+                }
+            }
+        }
+    }
+#endif
+    return true;
+}
+
+bool UIKit_GetDisplayUsableBounds(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_Rect *rect)
+{
+    @autoreleasepool {
+        SDL_UIKitDisplayData *data = (__bridge SDL_UIKitDisplayData *)display->internal;
+#ifdef SDL_PLATFORM_VISIONOS
+        CGRect frame = CGRectMake(0, 0, SDL_XR_SCREENWIDTH, SDL_XR_SCREENHEIGHT);
+#else
+        CGRect frame = data.uiscreen.bounds;
+#endif
+
+        /* the default function iterates displays to make a fake offset,
+         as if all the displays were side-by-side, which is fine for iOS. */
+        if (!SDL_GetDisplayBounds(display->id, rect)) {
+            return false;
+        }
+
+        rect->x += (int)frame.origin.x;
+        rect->y += (int)frame.origin.y;
+        rect->w = (int)frame.size.width;
+        rect->h = (int)frame.size.height;
+    }
+
+    return true;
+}
+
+void UIKit_QuitModes(SDL_VideoDevice *_this)
+{
+#ifndef SDL_PLATFORM_VISIONOS
+    [SDL_DisplayWatch stop];
+#endif
+
+    // Release Objective-C objects, so higher level doesn't free() them.
+    int i, j;
+    @autoreleasepool {
+        for (i = 0; i < _this->num_displays; i++) {
+            SDL_VideoDisplay *display = _this->displays[i];
+
+            UIKit_FreeDisplayModeData(&display->desktop_mode);
+            for (j = 0; j < display->num_fullscreen_modes; j++) {
+                SDL_DisplayMode *mode = &display->fullscreen_modes[j];
+                UIKit_FreeDisplayModeData(mode);
+            }
+
+            if (display->internal != NULL) {
+                CFRelease(display->internal);
+                display->internal = NULL;
+            }
+        }
+    }
+}
+
+#if !defined(SDL_PLATFORM_TVOS) && !defined(SDL_PLATFORM_VISIONOS)
+void SDL_OnApplicationDidChangeStatusBarOrientation(void)
+{
+    BOOL isLandscape = UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
+    SDL_VideoDisplay *display = SDL_GetVideoDisplay(SDL_GetPrimaryDisplay());
+
+    if (display) {
+        SDL_DisplayMode *mode = &display->desktop_mode;
+        SDL_DisplayOrientation orientation = SDL_ORIENTATION_UNKNOWN;
+        int i;
+
+        /* The desktop display mode should be kept in sync with the screen
+         * orientation so that updating a window's fullscreen state to
+         * fullscreen desktop keeps the window dimensions in the
+         * correct orientation. */
+        if (isLandscape != (mode->w > mode->h)) {
+            SDL_DisplayMode new_mode;
+            SDL_copyp(&new_mode, mode);
+            new_mode.w = mode->h;
+            new_mode.h = mode->w;
+
+            // Make sure we don't free the current display mode data
+            mode->internal = NULL;
+
+            SDL_SetDesktopDisplayMode(display, &new_mode);
+        }
+
+        // Same deal with the fullscreen modes
+        for (i = 0; i < display->num_fullscreen_modes; ++i) {
+            mode = &display->fullscreen_modes[i];
+            if (isLandscape != (mode->w > mode->h)) {
+                int height = mode->w;
+                mode->w = mode->h;
+                mode->h = height;
+            }
+        }
+
+        switch ([UIApplication sharedApplication].statusBarOrientation) {
+        case UIInterfaceOrientationPortrait:
+            orientation = SDL_ORIENTATION_PORTRAIT;
+            break;
+        case UIInterfaceOrientationPortraitUpsideDown:
+            orientation = SDL_ORIENTATION_PORTRAIT_FLIPPED;
+            break;
+        case UIInterfaceOrientationLandscapeLeft:
+            // Bug: UIInterfaceOrientationLandscapeLeft/Right are reversed - http://openradar.appspot.com/7216046
+            orientation = SDL_ORIENTATION_LANDSCAPE_FLIPPED;
+            break;
+        case UIInterfaceOrientationLandscapeRight:
+            // Bug: UIInterfaceOrientationLandscapeLeft/Right are reversed - http://openradar.appspot.com/7216046
+            orientation = SDL_ORIENTATION_LANDSCAPE;
+            break;
+        default:
+            break;
+        }
+        SDL_SendDisplayEvent(display, SDL_EVENT_DISPLAY_ORIENTATION, orientation, 0);
+    }
+}
+#endif // !SDL_PLATFORM_TVOS
+
+#endif // SDL_VIDEO_DRIVER_UIKIT