/*

Simple DirectMedia Layer

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_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)

{

}

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;

device->DestroyWindow = UIKit_DestroyWindow;

device->GetWindowWMInfo = UIKit_GetWindowWMInfo;

/* 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

*/

static void

UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * display)

{

UIScreen *uiscreen = (UIScreen *) display->driverdata;

SDL_DisplayMode mode;

SDL_zero(mode);

// availableModes showed up in 3.2 (the iPad and later). We should only

// land here for at least that version of the OS.

if (!SDL_UIKit_supports_multiple_displays) {

const CGRect rect = [uiscreen bounds];

mode.format = SDL_PIXELFORMAT_ABGR8888;

mode.refresh_rate = 0;

mode.driverdata = NULL;

mode.w = (int) rect.size.width;

mode.h = (int) rect.size.height;

mode.w = (int) rect.size.height; // swap the orientation, add again.

mode.h = (int) rect.size.width;

SDL_AddDisplayMode(display, &mode);

return;

}

CGSize size = [uimode size];

mode.format = SDL_PIXELFORMAT_ABGR8888;

mode.refresh_rate = 0;

mode.driverdata = uimode;

mode.w = (int) size.width;

mode.h = (int) size.height;

if (SDL_AddDisplayMode(display, &mode))

if (uiscreen == [UIScreen mainScreen]) {

// Add the mode with swapped width/height

mode.w = (int) size.height;

mode.h = (int) size.width;

if (SDL_AddDisplayMode(display, &mode))

[uimode retain];

}

}

}

static void

{

SDL_VideoDisplay display;

SDL_DisplayMode mode;

SDL_zero(mode);

mode.format = SDL_PIXELFORMAT_ABGR8888;

mode.w = w;

mode.h = h;

mode.refresh_rate = 0;

// UIScreenMode showed up in 3.2 (the iPad and later). We're

// misusing this supports_multiple_displays flag here for that.

UIScreenMode *uimode = [uiscreen currentMode];

[uimode retain]; // once for the desktop_mode

[uimode retain]; // once for the current_mode

mode.driverdata = uimode;

}

SDL_zero(display);

display.desktop_mode = mode;

display.current_mode = mode;

[uiscreen retain];

display.driverdata = uiscreen;

SDL_AddVideoDisplay(&display);

}

int

UIKit_VideoInit(_THIS)

{

_this->gl_config.driver_loaded = 1;

// this tells us whether we are running on ios >= 3.2

SDL_UIKit_supports_multiple_displays = [UIScreen instancesRespondToSelector:@selector(currentMode)];

// Add the main screen.

UIScreen *uiscreen = [UIScreen mainScreen];

const CGSize size = [uiscreen bounds].size;

// 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

// external displays. So, add the other displays (screens in UI speak).

if (SDL_UIKit_supports_multiple_displays) {

// Only add the other screens

if (uiscreen != [UIScreen mainScreen]) {

const CGSize size = [uiscreen bounds].size;

}

}

/* We're done! */

return 0;

}

static int

UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)

{

UIScreen *uiscreen = (UIScreen *) display->driverdata;

if (!SDL_UIKit_supports_multiple_displays) {

// Not on at least iPhoneOS 3.2 (versions prior to iPad).

SDL_assert(mode->driverdata == NULL);

} else {

UIScreenMode *uimode = (UIScreenMode *) mode->driverdata;

[uiscreen setCurrentMode:uimode];

CGSize size = [uimode size];

if (size.width >= size.height) {

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:NO];

} else {

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];

}

}

return 0;

}

static void

UIKit_ReleaseUIScreenMode(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 {

UIScreenMode *uimode = (UIScreenMode *) mode->driverdata;

[uimode release];

mode->driverdata = NULL;

}

}

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];

UIScreen *uiscreen = (UIScreen *) display->driverdata;

[uiscreen release];

display->driverdata = NULL;

UIKit_ReleaseUIScreenMode(&display->desktop_mode);

UIKit_ReleaseUIScreenMode(&display->current_mode);

for (j = 0; j < display->num_display_modes; j++) {

SDL_DisplayMode *mode = &display->display_modes[j];

}

}

}

#endif /* SDL_VIDEO_DRIVER_UIKIT */