2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
21 #include "../../SDL_internal.h"
23 #if SDL_VIDEO_DRIVER_UIKIT
25 #include "SDL_syswm.h"
26 #include "SDL_video.h"
27 #include "SDL_mouse.h"
28 #include "SDL_hints.h"
29 #include "../SDL_sysvideo.h"
30 #include "../SDL_pixels_c.h"
31 #include "../../events/SDL_events_c.h"
33 #include "SDL_uikitvideo.h"
34 #include "SDL_uikitevents.h"
35 #include "SDL_uikitmodes.h"
36 #include "SDL_uikitwindow.h"
37 #import "SDL_uikitappdelegate.h"
39 #import "SDL_uikitview.h"
40 #import "SDL_uikitopenglview.h"
42 #include <Foundation/Foundation.h>
44 @implementation SDL_WindowData
47 @synthesize viewcontroller;
52 if ((self = [super init])) {
53 views = [NSMutableArray new];
61 @interface SDL_uikitwindow : UIWindow
63 - (void)layoutSubviews;
67 @implementation SDL_uikitwindow
69 - (void)layoutSubviews
71 /* Workaround to fix window orientation issues in iOS 8. */
72 /* As of July 1 2019, I haven't been able to reproduce any orientation
73 * issues with this disabled on iOS 12. The issue this is meant to fix might
74 * only happen on iOS 8, or it might have been fixed another way with other
75 * code... This code prevents split view (iOS 9+) from working on iPads, so
76 * we want to avoid using it if possible. */
77 if (!UIKit_IsSystemVersionAtLeast(9.0)) {
78 self.frame = self.screen.bounds;
80 [super layoutSubviews];
87 SetupWindowData(_THIS, SDL_Window *window, UIWindow *uiwindow, SDL_bool created)
89 SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
90 SDL_DisplayData *displaydata = (__bridge SDL_DisplayData *) display->driverdata;
93 CGRect frame = UIKit_ComputeViewFrame(window, displaydata.uiscreen);
94 int width = (int) frame.size.width;
95 int height = (int) frame.size.height;
97 SDL_WindowData *data = [[SDL_WindowData alloc] init];
99 return SDL_OutOfMemory();
102 window->driverdata = (void *) CFBridgingRetain(data);
104 data.uiwindow = uiwindow;
106 /* only one window on iOS, always shown */
107 window->flags &= ~SDL_WINDOW_HIDDEN;
109 if (displaydata.uiscreen != [UIScreen mainScreen]) {
110 window->flags &= ~SDL_WINDOW_RESIZABLE; /* window is NEVER resizable */
111 window->flags &= ~SDL_WINDOW_INPUT_FOCUS; /* never has input focus */
112 window->flags |= SDL_WINDOW_BORDERLESS; /* never has a status bar. */
116 if (displaydata.uiscreen == [UIScreen mainScreen]) {
117 /* SDL_CreateWindow sets the window w&h to the display's bounds if the
118 * fullscreen flag is set. But the display bounds orientation might not
119 * match what we want, and GetSupportedOrientations call below uses the
120 * window w&h. They're overridden below anyway, so we'll just set them
121 * to the requested size for the purposes of determining orientation. */
122 window->w = window->windowed.w;
123 window->h = window->windowed.h;
125 NSUInteger orients = UIKit_GetSupportedOrientations(window);
126 BOOL supportsLandscape = (orients & UIInterfaceOrientationMaskLandscape) != 0;
127 BOOL supportsPortrait = (orients & (UIInterfaceOrientationMaskPortrait|UIInterfaceOrientationMaskPortraitUpsideDown)) != 0;
129 /* Make sure the width/height are oriented correctly */
130 if ((width > height && !supportsLandscape) || (height > width && !supportsPortrait)) {
136 #endif /* !TARGET_OS_TV */
143 /* The View Controller will handle rotating the view when the device
144 * orientation changes. This will trigger resize events, if appropriate. */
145 data.viewcontroller = [[SDL_uikitviewcontroller alloc] initWithSDLWindow:window];
147 /* The window will initially contain a generic view so resizes, touch events,
148 * etc. can be handled without an active OpenGL view/context. */
149 view = [[SDL_uikitview alloc] initWithFrame:frame];
151 /* Sets this view as the controller's view, and adds the view to the window
153 [view setSDLWindow:window];
159 UIKit_CreateWindow(_THIS, SDL_Window *window)
162 SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
163 SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
166 /* We currently only handle a single window per display on iOS */
167 for (other = _this->windows; other; other = other->next) {
168 if (other != window && SDL_GetDisplayForWindow(other) == display) {
169 return SDL_SetError("Only one window allowed per display.");
173 /* If monitor has a resolution of 0x0 (hasn't been explicitly set by the
174 * user, so it's in standby), try to force the display to a resolution
175 * that most closely matches the desired window size. */
177 const CGSize origsize = data.uiscreen.currentMode.size;
178 if ((origsize.width == 0.0f) && (origsize.height == 0.0f)) {
179 if (display->num_display_modes == 0) {
180 _this->GetDisplayModes(_this, display);
184 const SDL_DisplayMode *bestmode = NULL;
185 for (i = display->num_display_modes; i >= 0; i--) {
186 const SDL_DisplayMode *mode = &display->display_modes[i];
187 if ((mode->w >= window->w) && (mode->h >= window->h)) {
193 SDL_DisplayModeData *modedata = (__bridge SDL_DisplayModeData *)bestmode->driverdata;
194 [data.uiscreen setCurrentMode:modedata.uiscreenmode];
196 /* desktop_mode doesn't change here (the higher level will
197 * use it to set all the screens back to their defaults
198 * upon window destruction, SDL_Quit(), etc. */
199 display->current_mode = *bestmode;
203 if (data.uiscreen == [UIScreen mainScreen]) {
204 if (window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_BORDERLESS)) {
205 [UIApplication sharedApplication].statusBarHidden = YES;
207 [UIApplication sharedApplication].statusBarHidden = NO;
210 #endif /* !TARGET_OS_TV */
212 /* ignore the size user requested, and make a fullscreen window */
213 /* !!! FIXME: can we have a smaller view? */
214 UIWindow *uiwindow = [[SDL_uikitwindow alloc] initWithFrame:data.uiscreen.bounds];
216 /* put the window on an external display if appropriate. */
217 if (data.uiscreen != [UIScreen mainScreen]) {
218 [uiwindow setScreen:data.uiscreen];
221 if (SetupWindowData(_this, window, uiwindow, SDL_TRUE) < 0) {
230 UIKit_SetWindowTitle(_THIS, SDL_Window * window)
233 SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;
234 data.viewcontroller.title = @(window->title);
239 UIKit_ShowWindow(_THIS, SDL_Window * window)
242 SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;
243 [data.uiwindow makeKeyAndVisible];
245 /* Make this window the current mouse focus for touch input */
246 SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
247 SDL_DisplayData *displaydata = (__bridge SDL_DisplayData *) display->driverdata;
248 if (displaydata.uiscreen == [UIScreen mainScreen]) {
249 SDL_SetMouseFocus(window);
250 SDL_SetKeyboardFocus(window);
256 UIKit_HideWindow(_THIS, SDL_Window * window)
259 SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;
260 data.uiwindow.hidden = YES;
265 UIKit_RaiseWindow(_THIS, SDL_Window * window)
267 /* We don't currently offer a concept of "raising" the SDL window, since
268 * we only allow one per display, in the iOS fashion.
269 * However, we use this entry point to rebind the context to the view
270 * during OnWindowRestored processing. */
271 _this->GL_MakeCurrent(_this, _this->current_glwin, _this->current_glctx);
275 UIKit_UpdateWindowBorder(_THIS, SDL_Window * window)
277 SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;
278 SDL_uikitviewcontroller *viewcontroller = data.viewcontroller;
281 if (data.uiwindow.screen == [UIScreen mainScreen]) {
282 if (window->flags & (SDL_WINDOW_FULLSCREEN | SDL_WINDOW_BORDERLESS)) {
283 [UIApplication sharedApplication].statusBarHidden = YES;
285 [UIApplication sharedApplication].statusBarHidden = NO;
288 /* iOS 7+ won't update the status bar until we tell it to. */
289 if ([viewcontroller respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {
290 [viewcontroller setNeedsStatusBarAppearanceUpdate];
294 /* Update the view's frame to account for the status bar change. */
295 viewcontroller.view.frame = UIKit_ComputeViewFrame(window, data.uiwindow.screen);
296 #endif /* !TARGET_OS_TV */
298 #ifdef SDL_IPHONE_KEYBOARD
299 /* Make sure the view is offset correctly when the keyboard is visible. */
300 [viewcontroller updateKeyboard];
303 [viewcontroller.view setNeedsLayout];
304 [viewcontroller.view layoutIfNeeded];
308 UIKit_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordered)
311 UIKit_UpdateWindowBorder(_this, window);
316 UIKit_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen)
319 UIKit_UpdateWindowBorder(_this, window);
324 UIKit_DestroyWindow(_THIS, SDL_Window * window)
327 if (window->driverdata != NULL) {
328 SDL_WindowData *data = (SDL_WindowData *) CFBridgingRelease(window->driverdata);
329 NSArray *views = nil;
331 [data.viewcontroller stopAnimation];
333 /* Detach all views from this window. We use a copy of the array
334 * because setSDLWindow will remove the object from the original
335 * array, which would be undesirable if we were iterating over it. */
336 views = [data.views copy];
337 for (SDL_uikitview *view in views) {
338 [view setSDLWindow:NULL];
341 /* iOS may still hold a reference to the window after we release it.
342 * We want to make sure the SDL view controller isn't accessed in
343 * that case, because it would contain an invalid pointer to the old
345 data.uiwindow.rootViewController = nil;
346 data.uiwindow.hidden = YES;
349 window->driverdata = NULL;
353 UIKit_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
356 SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;
358 if (info->version.major <= SDL_MAJOR_VERSION) {
359 int versionnum = SDL_VERSIONNUM(info->version.major, info->version.minor, info->version.patch);
361 info->subsystem = SDL_SYSWM_UIKIT;
362 info->info.uikit.window = data.uiwindow;
364 /* These struct members were added in SDL 2.0.4. */
365 if (versionnum >= SDL_VERSIONNUM(2,0,4)) {
366 #if SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
367 if ([data.viewcontroller.view isKindOfClass:[SDL_uikitopenglview class]]) {
368 SDL_uikitopenglview *glview = (SDL_uikitopenglview *)data.viewcontroller.view;
369 info->info.uikit.framebuffer = glview.drawableFramebuffer;
370 info->info.uikit.colorbuffer = glview.drawableRenderbuffer;
371 info->info.uikit.resolveFramebuffer = glview.msaaResolveFramebuffer;
376 info->info.uikit.framebuffer = 0;
377 info->info.uikit.colorbuffer = 0;
378 info->info.uikit.resolveFramebuffer = 0;
384 SDL_SetError("Application not compiled with SDL %d.%d",
385 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
393 UIKit_GetSupportedOrientations(SDL_Window * window)
395 const char *hint = SDL_GetHint(SDL_HINT_ORIENTATIONS);
396 NSUInteger validOrientations = UIInterfaceOrientationMaskAll;
397 NSUInteger orientationMask = 0;
400 SDL_WindowData *data = (__bridge SDL_WindowData *) window->driverdata;
401 UIApplication *app = [UIApplication sharedApplication];
403 /* Get all possible valid orientations. If the app delegate doesn't tell
404 * us, we get the orientations from Info.plist via UIApplication. */
405 if ([app.delegate respondsToSelector:@selector(application:supportedInterfaceOrientationsForWindow:)]) {
406 validOrientations = [app.delegate application:app supportedInterfaceOrientationsForWindow:data.uiwindow];
407 } else if ([app respondsToSelector:@selector(supportedInterfaceOrientationsForWindow:)]) {
408 validOrientations = [app supportedInterfaceOrientationsForWindow:data.uiwindow];
412 NSArray *orientations = [@(hint) componentsSeparatedByString:@" "];
414 if ([orientations containsObject:@"LandscapeLeft"]) {
415 orientationMask |= UIInterfaceOrientationMaskLandscapeLeft;
417 if ([orientations containsObject:@"LandscapeRight"]) {
418 orientationMask |= UIInterfaceOrientationMaskLandscapeRight;
420 if ([orientations containsObject:@"Portrait"]) {
421 orientationMask |= UIInterfaceOrientationMaskPortrait;
423 if ([orientations containsObject:@"PortraitUpsideDown"]) {
424 orientationMask |= UIInterfaceOrientationMaskPortraitUpsideDown;
428 if (orientationMask == 0 && (window->flags & SDL_WINDOW_RESIZABLE)) {
429 /* any orientation is okay. */
430 orientationMask = UIInterfaceOrientationMaskAll;
433 if (orientationMask == 0) {
434 if (window->w >= window->h) {
435 orientationMask |= UIInterfaceOrientationMaskLandscape;
437 if (window->h >= window->w) {
438 orientationMask |= (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown);
442 /* Don't allow upside-down orientation on phones, so answering calls is in the natural orientation */
443 if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone) {
444 orientationMask &= ~UIInterfaceOrientationMaskPortraitUpsideDown;
447 /* If none of the specified orientations are actually supported by the
448 * app, we'll revert to what the app supports. An exception would be
449 * thrown by the system otherwise. */
450 if ((validOrientations & orientationMask) == 0) {
451 orientationMask = validOrientations;
455 return orientationMask;
457 #endif /* !TARGET_OS_TV */
460 SDL_iPhoneSetAnimationCallback(SDL_Window * window, int interval, void (*callback)(void*), void *callbackParam)
462 if (!window || !window->driverdata) {
463 return SDL_SetError("Invalid window");
467 SDL_WindowData *data = (__bridge SDL_WindowData *)window->driverdata;
468 [data.viewcontroller setAnimationCallback:interval
470 callbackParam:callbackParam];
476 #endif /* SDL_VIDEO_DRIVER_UIKIT */
478 /* vi: set ts=4 sw=4 expandtab: */