This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_uikitvideo.m
executable file
·382 lines (312 loc) · 11.4 KB
/
SDL_uikitvideo.m
OlderNewer
1
2
/*
Simple DirectMedia Layer
3
Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
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.
*/
21
#include "SDL_config.h"
22
23
#if SDL_VIDEO_DRIVER_UIKIT
24
25
#import <UIKit/UIKit.h>
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
#include "SDL_video.h"
#include "SDL_mouse.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
#include "SDL_uikitvideo.h"
#include "SDL_uikitevents.h"
#include "SDL_uikitwindow.h"
#include "SDL_uikitopengles.h"
#include "SDL_assert.h"
#define UIKITVID_DRIVER_NAME "uikit"
/* Initialization/Query functions */
static int UIKit_VideoInit(_THIS);
static void UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * sdl_display);
static int UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display,
SDL_DisplayMode * mode);
static void UIKit_VideoQuit(_THIS);
BOOL SDL_UIKit_supports_multiple_displays = NO;
/* DUMMY driver bootstrap functions */
static int
UIKit_Available(void)
{
56
return 1;
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
}
static void UIKit_DeleteDevice(SDL_VideoDevice * device)
{
SDL_free(device);
}
static SDL_VideoDevice *
UIKit_CreateDevice(int devindex)
{
SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
if (!device) {
SDL_OutOfMemory();
if (device) {
SDL_free(device);
}
return (0);
}
/* Set the function pointers */
device->VideoInit = UIKit_VideoInit;
device->VideoQuit = UIKit_VideoQuit;
device->GetDisplayModes = UIKit_GetDisplayModes;
device->SetDisplayMode = UIKit_SetDisplayMode;
device->PumpEvents = UIKit_PumpEvents;
device->CreateWindow = UIKit_CreateWindow;
86
device->SetWindowFullscreen = UIKit_SetWindowFullscreen;
87
88
device->DestroyWindow = UIKit_DestroyWindow;
device->GetWindowWMInfo = UIKit_GetWindowWMInfo;
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
/* OpenGL (ES) functions */
device->GL_MakeCurrent = UIKit_GL_MakeCurrent;
device->GL_SwapWindow = UIKit_GL_SwapWindow;
device->GL_CreateContext = UIKit_GL_CreateContext;
device->GL_DeleteContext = UIKit_GL_DeleteContext;
device->GL_GetProcAddress = UIKit_GL_GetProcAddress;
device->GL_LoadLibrary = UIKit_GL_LoadLibrary;
device->free = UIKit_DeleteDevice;
device->gl_config.accelerated = 1;
return device;
}
VideoBootStrap UIKIT_bootstrap = {
UIKITVID_DRIVER_NAME, "SDL UIKit video driver",
UIKit_Available, UIKit_CreateDevice
};
/*
!!! FIXME:
The main screen should list a AxB mode for portrait orientation, and then
also list BxA for landscape mode. When setting a given resolution, we should
rotate the view's transform appropriately (extra credit if you check the
accelerometer and rotate the display so it's never upside down).
http://iphonedevelopment.blogspot.com/2008/10/starting-in-landscape-mode-without.html
*/
123
static int
124
UIKit_AllocateDisplayModeData(SDL_DisplayMode * mode,
125
UIScreenMode * uiscreenmode, CGFloat scale)
126
{
127
SDL_DisplayModeData *data = NULL;
128
129
130
131
132
133
134
135
136
137
if (uiscreenmode != nil) {
/* Allocate the display mode data */
data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
data->uiscreenmode = uiscreenmode;
138
139
[data->uiscreenmode retain];
140
data->scale = scale;
141
}
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
mode->driverdata = data;
return 0;
}
static void
UIKit_FreeDisplayModeData(SDL_DisplayMode * mode)
{
if (!SDL_UIKit_supports_multiple_displays) {
// Not on at least iPhoneOS 3.2 (versions prior to iPad).
SDL_assert(mode->driverdata == NULL);
} else if (mode->driverdata != NULL) {
SDL_DisplayModeData *data = (SDL_DisplayModeData *)mode->driverdata;
[data->uiscreenmode release];
SDL_free(data);
mode->driverdata = NULL;
}
}
static int
UIKit_AddSingleDisplayMode(SDL_VideoDisplay * display, int w, int h,
UIScreenMode * uiscreenmode, CGFloat scale)
{
SDL_DisplayMode mode;
SDL_zero(mode);
169
170
mode.format = SDL_PIXELFORMAT_ABGR8888;
mode.refresh_rate = 0;
171
172
173
if (UIKit_AllocateDisplayModeData(&mode, uiscreenmode, scale) < 0) {
return -1;
}
174
175
176
177
178
mode.w = w;
mode.h = h;
if (SDL_AddDisplayMode(display, &mode)) {
return 0;
179
}
180
181
182
183
184
185
186
187
// Failure case; free resources
SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode.driverdata;
if (data != NULL) {
[data->uiscreenmode release];
SDL_free(data);
}
188
189
return -1;
190
191
}
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
static int
UIKit_AddDisplayMode(SDL_VideoDisplay * display, int w, int h, CGFloat scale,
UIScreenMode * uiscreenmode, BOOL rotated)
{
if (UIKit_AddSingleDisplayMode(display, w, h, uiscreenmode, scale) < 0) {
return -1;
}
if (rotated) {
// Add the rotated version
if (UIKit_AddSingleDisplayMode(display, h, w, uiscreenmode, scale) < 0) {
return -1;
}
}
return 0;
}
209
210
static void
211
UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
212
{
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
if (SDL_UIKit_supports_multiple_displays) {
// availableModes showed up in 3.2 (the iPad and later). We should only
// land here for at least that version of the OS.
for (UIScreenMode *uimode in [data->uiscreen availableModes]) {
BOOL mainscreen = (data->uiscreen == [UIScreen mainScreen]);
CGSize size = [uimode size];
int w = (int)size.width;
int h = (int)size.height;
// Add the native screen resolution.
UIKit_AddDisplayMode(display, w, h, data->scale, uimode, mainscreen);
if (data->scale != 1.0f) {
// Add the native screen resolution divided by its scale.
// This is so devices capable of e.g. 640x960 also advertise
// 320x480.
UIKit_AddDisplayMode(display,
(int)(w / data->scale), (int)(h / data->scale),
1.0f, uimode, mainscreen);
}
}
} else {
const CGRect rect = [data->uiscreen bounds];
UIKit_AddDisplayMode(display,
(int)rect.size.width, (int)rect.size.height,
1.0f, nil, YES);
}
}
static int
UIKit_AddDisplay(UIScreen *uiscreen, CGSize size)
{
// When dealing with UIKit all coordinates are specified in terms of
// what Apple refers to as points. On earlier devices without the
// so called "Retina" display, there is a one to one mapping between
// points and pixels. In other cases [UIScreen scale] indicates the
// relationship between points and pixels. Since SDL has no notion
// of points, we must compensate in all cases where dealing with such
// units.
CGFloat scale;
if ([UIScreen instancesRespondToSelector:@selector(scale)]) {
scale = [uiscreen scale]; // iOS >= 4.0
} else {
scale = 1.0f; // iOS < 4.0
}
262
263
264
265
SDL_VideoDisplay display;
SDL_DisplayMode mode;
SDL_zero(mode);
mode.format = SDL_PIXELFORMAT_ABGR8888;
266
267
mode.w = (int)(size.width * scale);
mode.h = (int)(size.height * scale);
268
mode.refresh_rate = 0;
269
270
UIScreenMode * uiscreenmode = nil;
271
272
// UIScreenMode showed up in 3.2 (the iPad and later). We're
// misusing this supports_multiple_displays flag here for that.
273
if (SDL_UIKit_supports_multiple_displays) {
274
275
276
277
278
uiscreenmode = [uiscreen currentMode];
}
if (UIKit_AllocateDisplayModeData(&mode, uiscreenmode, scale) < 0) {
return -1;
279
}
280
281
282
283
284
SDL_zero(display);
display.desktop_mode = mode;
display.current_mode = mode;
285
/* Allocate the display data */
286
SDL_DisplayData *data = (SDL_DisplayData *) SDL_malloc(sizeof(*data));
287
288
if (!data) {
SDL_OutOfMemory();
289
UIKit_FreeDisplayModeData(&display.desktop_mode);
290
291
292
return -1;
}
293
[uiscreen retain];
294
295
296
297
data->uiscreen = uiscreen;
data->scale = scale;
display.driverdata = data;
298
SDL_AddVideoDisplay(&display);
299
300
return 0;
301
302
303
304
305
306
307
308
}
int
UIKit_VideoInit(_THIS)
{
_this->gl_config.driver_loaded = 1;
309
310
// this tells us whether we are running on ios >= 3.2
SDL_UIKit_supports_multiple_displays = [UIScreen instancesRespondToSelector:@selector(currentMode)];
311
312
313
314
// Add the main screen.
UIScreen *uiscreen = [UIScreen mainScreen];
const CGSize size = [uiscreen bounds].size;
315
316
317
318
if (UIKit_AddDisplay(uiscreen, size) < 0) {
return -1;
}
319
320
321
// If this is iPhoneOS < 3.2, all devices are one screen, 320x480 pixels.
// The iPad added both a larger main screen and the ability to use
322
323
// external displays. So, add the other displays (screens in UI speak).
if (SDL_UIKit_supports_multiple_displays) {
324
for (UIScreen *uiscreen in [UIScreen screens]) {
325
326
327
// Only add the other screens
if (uiscreen != [UIScreen mainScreen]) {
const CGSize size = [uiscreen bounds].size;
328
329
330
if (UIKit_AddDisplay(uiscreen, size) < 0) {
return -1;
}
331
}
332
333
334
335
336
337
338
339
340
341
}
}
/* We're done! */
return 0;
}
static int
UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
{
342
SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
343
344
345
346
if (!SDL_UIKit_supports_multiple_displays) {
// Not on at least iPhoneOS 3.2 (versions prior to iPad).
SDL_assert(mode->driverdata == NULL);
} else {
347
348
SDL_DisplayModeData *modedata = (SDL_DisplayModeData *)mode->driverdata;
[data->uiscreen setCurrentMode:modedata->uiscreenmode];
349
350
CGSize size = [modedata->uiscreenmode size];
351
352
353
354
355
if (size.width >= size.height) {
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:NO];
} else {
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];
}
356
357
358
359
360
361
362
363
364
365
366
367
}
return 0;
}
void
UIKit_VideoQuit(_THIS)
{
// Release Objective-C objects, so higher level doesn't free() them.
int i, j;
for (i = 0; i < _this->num_displays; i++) {
SDL_VideoDisplay *display = &_this->displays[i];
368
369
370
SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
[data->uiscreen release];
SDL_free(data);
371
display->driverdata = NULL;
372
UIKit_FreeDisplayModeData(&display->desktop_mode);
373
374
for (j = 0; j < display->num_display_modes; j++) {
SDL_DisplayMode *mode = &display->display_modes[j];
375
UIKit_FreeDisplayModeData(mode);
376
377
378
379
}
}
}
380
381
#endif /* SDL_VIDEO_DRIVER_UIKIT */
382
/* vi: set ts=4 sw=4 expandtab: */