SDL  2.0
SDL_uikitmodes.m
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
4 
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.
8 
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:
12 
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.
20 */
21 #include "../../SDL_internal.h"
22 
23 #if SDL_VIDEO_DRIVER_UIKIT
24 
25 #include "SDL_assert.h"
26 #include "SDL_uikitmodes.h"
27 
28 #include "../../events/SDL_events_c.h"
29 
30 @implementation SDL_DisplayData
31 
32 @synthesize uiscreen;
33 
34 @end
35 
36 @implementation SDL_DisplayModeData
37 
38 @synthesize uiscreenmode;
39 
40 @end
41 
42 
43 static int
44 UIKit_AllocateDisplayModeData(SDL_DisplayMode * mode,
45  UIScreenMode * uiscreenmode)
46 {
48 
49  if (uiscreenmode != nil) {
50  /* Allocate the display mode data */
51  data = [[SDL_DisplayModeData alloc] init];
52  if (!data) {
53  return SDL_OutOfMemory();
54  }
55 
57  }
58 
59  mode->driverdata = (void *) CFBridgingRetain(data);
60 
61  return 0;
62 }
63 
64 static void
65 UIKit_FreeDisplayModeData(SDL_DisplayMode * mode)
66 {
67  if (mode->driverdata != NULL) {
68  CFRelease(mode->driverdata);
69  mode->driverdata = NULL;
70  }
71 }
72 
73 static NSUInteger
74 UIKit_GetDisplayModeRefreshRate(UIScreen *uiscreen)
75 {
76 #ifdef __IPHONE_10_3
77  if ([uiscreen respondsToSelector:@selector(maximumFramesPerSecond)]) {
78  return uiscreen.maximumFramesPerSecond;
79  }
80 #endif
81  return 0;
82 }
83 
84 static int
85 UIKit_AddSingleDisplayMode(SDL_VideoDisplay * display, int w, int h,
86  UIScreen * uiscreen, UIScreenMode * uiscreenmode)
87 {
89  SDL_zero(mode);
90 
91  if (UIKit_AllocateDisplayModeData(&mode, uiscreenmode) < 0) {
92  return -1;
93  }
94 
96  mode.refresh_rate = (int) UIKit_GetDisplayModeRefreshRate(uiscreen);
97  mode.w = w;
98  mode.h = h;
99 
100  if (SDL_AddDisplayMode(display, &mode)) {
101  return 0;
102  } else {
103  UIKit_FreeDisplayModeData(&mode);
104  return -1;
105  }
106 }
107 
108 static int
109 UIKit_AddDisplayMode(SDL_VideoDisplay * display, int w, int h, UIScreen * uiscreen,
110  UIScreenMode * uiscreenmode, SDL_bool addRotation)
111 {
112  if (UIKit_AddSingleDisplayMode(display, w, h, uiscreen, uiscreenmode) < 0) {
113  return -1;
114  }
115 
116  if (addRotation) {
117  /* Add the rotated version */
118  if (UIKit_AddSingleDisplayMode(display, h, w, uiscreen, uiscreenmode) < 0) {
119  return -1;
120  }
121  }
122 
123  return 0;
124 }
125 
126 static int
127 UIKit_AddDisplay(UIScreen *uiscreen)
128 {
129  UIScreenMode *uiscreenmode = uiscreen.currentMode;
130  CGSize size = uiscreen.bounds.size;
131  SDL_VideoDisplay display;
133  SDL_zero(mode);
134 
135  /* Make sure the width/height are oriented correctly */
136  if (UIKit_IsDisplayLandscape(uiscreen) != (size.width > size.height)) {
137  CGFloat height = size.width;
138  size.width = size.height;
139  size.height = height;
140  }
141 
143  mode.refresh_rate = (int) UIKit_GetDisplayModeRefreshRate(uiscreen);
144  mode.w = (int) size.width;
145  mode.h = (int) size.height;
146 
147  if (UIKit_AllocateDisplayModeData(&mode, uiscreenmode) < 0) {
148  return -1;
149  }
150 
151  SDL_zero(display);
152  display.desktop_mode = mode;
153  display.current_mode = mode;
154 
155  /* Allocate the display data */
156  SDL_DisplayData *data = [[SDL_DisplayData alloc] init];
157  if (!data) {
158  UIKit_FreeDisplayModeData(&display.desktop_mode);
159  return SDL_OutOfMemory();
160  }
161 
162  data.uiscreen = uiscreen;
163 
164  display.driverdata = (void *) CFBridgingRetain(data);
165  SDL_AddVideoDisplay(&display);
166 
167  return 0;
168 }
169 
170 SDL_bool
171 UIKit_IsDisplayLandscape(UIScreen *uiscreen)
172 {
173 #if !TARGET_OS_TV
174  if (uiscreen == [UIScreen mainScreen]) {
175  return UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
176  } else
177 #endif /* !TARGET_OS_TV */
178  {
179  CGSize size = uiscreen.bounds.size;
180  return (size.width > size.height);
181  }
182 }
183 
184 int
186 {
187  @autoreleasepool {
188  for (UIScreen *uiscreen in [UIScreen screens]) {
189  if (UIKit_AddDisplay(uiscreen) < 0) {
190  return -1;
191  }
192  }
193 #if !TARGET_OS_TV
195 #endif
196  }
197 
198  return 0;
199 }
200 
201 void
203 {
204  @autoreleasepool {
205  SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
206 
207  SDL_bool isLandscape = UIKit_IsDisplayLandscape(data.uiscreen);
208  SDL_bool addRotation = (data.uiscreen == [UIScreen mainScreen]);
209  CGFloat scale = data.uiscreen.scale;
210  NSArray *availableModes = nil;
211 
212 #if TARGET_OS_TV
213  addRotation = SDL_FALSE;
214  availableModes = @[data.uiscreen.currentMode];
215 #else
216  availableModes = data.uiscreen.availableModes;
217 #endif
218 
219 #ifdef __IPHONE_8_0
220  /* The UIScreenMode of an iPhone 6 Plus should be 1080x1920 rather than
221  * 1242x2208 (414x736@3x), so we should use the native scale. */
222  if ([data.uiscreen respondsToSelector:@selector(nativeScale)]) {
223  scale = data.uiscreen.nativeScale;
224  }
225 #endif
226 
227  for (UIScreenMode *uimode in availableModes) {
228  /* The size of a UIScreenMode is in pixels, but we deal exclusively
229  * in points (except in SDL_GL_GetDrawableSize.) */
230  int w = (int)(uimode.size.width / scale);
231  int h = (int)(uimode.size.height / scale);
232 
233  /* Make sure the width/height are oriented correctly */
234  if (isLandscape != (w > h)) {
235  int tmp = w;
236  w = h;
237  h = tmp;
238  }
239 
240  UIKit_AddDisplayMode(display, w, h, data.uiscreen, uimode, addRotation);
241  }
242  }
243 }
244 
245 int
247 {
248  @autoreleasepool {
249  SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
250 
251 #if !TARGET_OS_TV
252  SDL_DisplayModeData *modedata = (__bridge SDL_DisplayModeData *)mode->driverdata;
253  [data.uiscreen setCurrentMode:modedata.uiscreenmode];
254 #endif
255 
256  if (data.uiscreen == [UIScreen mainScreen]) {
257  /* [UIApplication setStatusBarOrientation:] no longer works reliably
258  * in recent iOS versions, so we can't rotate the screen when setting
259  * the display mode. */
260  if (mode->w > mode->h) {
261  if (!UIKit_IsDisplayLandscape(data.uiscreen)) {
262  return SDL_SetError("Screen orientation does not match display mode size");
263  }
264  } else if (mode->w < mode->h) {
266  return SDL_SetError("Screen orientation does not match display mode size");
267  }
268  }
269  }
270  }
271 
272  return 0;
273 }
274 
275 int
277 {
278  @autoreleasepool {
279  int displayIndex = (int) (display - _this->displays);
280  SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
281  CGRect frame = data.uiscreen.bounds;
282 
283  /* the default function iterates displays to make a fake offset,
284  as if all the displays were side-by-side, which is fine for iOS. */
285  if (SDL_GetDisplayBounds(displayIndex, rect) < 0) {
286  return -1;
287  }
288 
289 #if !TARGET_OS_TV && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_7_0
290  if (!UIKit_IsSystemVersionAtLeast(7.0)) {
291  frame = [data.uiscreen applicationFrame];
292  }
293 #endif
294 
295  rect->x += frame.origin.x;
296  rect->y += frame.origin.y;
297  rect->w = frame.size.width;
298  rect->h = frame.size.height;
299  }
300 
301  return 0;
302 }
303 
304 void
306 {
307  /* Release Objective-C objects, so higher level doesn't free() them. */
308  int i, j;
309  @autoreleasepool {
310  for (i = 0; i < _this->num_displays; i++) {
311  SDL_VideoDisplay *display = &_this->displays[i];
312 
313  UIKit_FreeDisplayModeData(&display->desktop_mode);
314  for (j = 0; j < display->num_display_modes; j++) {
315  SDL_DisplayMode *mode = &display->display_modes[j];
316  UIKit_FreeDisplayModeData(mode);
317  }
318 
319  if (display->driverdata != NULL) {
320  CFRelease(display->driverdata);
321  display->driverdata = NULL;
322  }
323  }
324  }
325 }
326 
327 #if !TARGET_OS_TV
329 {
330  BOOL isLandscape = UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
331  SDL_VideoDisplay *display = SDL_GetDisplay(0);
332 
333  if (display) {
334  SDL_DisplayMode *desktopmode = &display->desktop_mode;
335  SDL_DisplayMode *currentmode = &display->current_mode;
337 
338  /* The desktop display mode should be kept in sync with the screen
339  * orientation so that updating a window's fullscreen state to
340  * SDL_WINDOW_FULLSCREEN_DESKTOP keeps the window dimensions in the
341  * correct orientation. */
342  if (isLandscape != (desktopmode->w > desktopmode->h)) {
343  int height = desktopmode->w;
344  desktopmode->w = desktopmode->h;
345  desktopmode->h = height;
346  }
347 
348  /* Same deal with the current mode + SDL_GetCurrentDisplayMode. */
349  if (isLandscape != (currentmode->w > currentmode->h)) {
350  int height = currentmode->w;
351  currentmode->w = currentmode->h;
352  currentmode->h = height;
353  }
354 
355  switch ([UIApplication sharedApplication].statusBarOrientation) {
356  case UIInterfaceOrientationPortrait:
357  orientation = SDL_ORIENTATION_PORTRAIT;
358  break;
359  case UIInterfaceOrientationPortraitUpsideDown:
360  orientation = SDL_ORIENTATION_PORTRAIT_FLIPPED;
361  break;
362  case UIInterfaceOrientationLandscapeLeft:
363  /* Bug: UIInterfaceOrientationLandscapeLeft/Right are reversed - http://openradar.appspot.com/7216046 */
364  orientation = SDL_ORIENTATION_LANDSCAPE_FLIPPED;
365  break;
366  case UIInterfaceOrientationLandscapeRight:
367  /* Bug: UIInterfaceOrientationLandscapeLeft/Right are reversed - http://openradar.appspot.com/7216046 */
368  orientation = SDL_ORIENTATION_LANDSCAPE;
369  break;
370  default:
371  break;
372  }
373  SDL_SendDisplayEvent(display, SDL_DISPLAYEVENT_ORIENTATION, orientation);
374  }
375 }
376 #endif /* !TARGET_OS_TV */
377 
378 #endif /* SDL_VIDEO_DRIVER_UIKIT */
379 
380 /* vi: set ts=4 sw=4 expandtab: */
int UIKit_InitModes(_THIS)
GLenum GLenum GLenum GLenum GLenum scale
SDL_bool UIKit_IsSystemVersionAtLeast(double version)
void UIKit_QuitModes(_THIS)
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1574
SDL_bool UIKit_IsDisplayLandscape(UIScreen *uiscreen)
SDL_Rect rect
Definition: testrelative.c:27
GLfloat GLfloat GLfloat GLfloat h
The structure that defines a display mode.
Definition: SDL_video.h:53
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
void UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay *display)
int SDL_AddVideoDisplay(const SDL_VideoDisplay *display)
Definition: SDL_video.c:606
static SDL_VideoDevice * _this
Definition: SDL_video.c:121
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
UIScreen * uiscreen
SDL_DisplayOrientation
Definition: SDL_video.h:181
SDL_VideoDisplay * SDL_GetDisplay(int displayIndex)
Definition: SDL_video.c:1024
#define _THIS
int frame
Definition: teststreaming.c:60
void * driverdata
Definition: SDL_video.h:59
SDL_DisplayMode * display_modes
Definition: SDL_sysvideo.h:130
SDL_DisplayMode current_mode
Definition: SDL_sysvideo.h:132
GLenum mode
GLubyte GLubyte GLubyte GLubyte w
SDL_VideoDisplay * displays
Definition: SDL_sysvideo.h:316
#define SDL_GetDisplayBounds
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int int in j)
Definition: SDL_x11sym.h:50
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1574
int x
Definition: SDL_rect.h:66
int w
Definition: SDL_rect.h:67
GLsizeiptr size
int SDL_SendDisplayEvent(SDL_VideoDisplay *display, Uint8 displayevent, int data1)
int UIKit_GetDisplayUsableBounds(_THIS, SDL_VideoDisplay *display, SDL_Rect *rect)
#define NULL
Definition: begin_code.h:164
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_bool
Definition: SDL_stdinc.h:161
SDL_DisplayMode desktop_mode
Definition: SDL_sysvideo.h:131
#define SDL_SetError
GLint GLint GLsizei GLsizei height
Definition: SDL_opengl.h:1572
UIScreenMode * uiscreenmode
int h
Definition: SDL_rect.h:67
SDL_bool SDL_AddDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode *mode)
Definition: SDL_video.c:754
Uint32 format
Definition: SDL_video.h:55
GLuint in
void SDL_OnApplicationDidChangeStatusBarOrientation(void)
int y
Definition: SDL_rect.h:66
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
int UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay *display, SDL_DisplayMode *mode)