/*

Simple DirectMedia Layer

Copyright (C) 1997-2012 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_config.h"

#if SDL_VIDEO_DRIVER_WINRT

/* WinRT SDL video driver implementation

Initial work on this was done by David Ludwig (dludwig@pobox.com), and

was based off of SDL's "dummy" video driver.

*/

extern "C" {

#include "SDL_video.h"

#include "SDL_mouse.h"

#include "../SDL_sysvideo.h"

#include "../SDL_pixels_c.h"

#include "../../events/SDL_events_c.h"

#include "../../render/SDL_sysrender.h"

#include "SDL_syswm.h"

}

#include "SDL_winrtvideo.h"

#include "SDL_winrtevents_c.h"

#include "SDL_winrtmouse.h"

using namespace Windows::UI::Core;

/* On Windows, windows.h defines CreateWindow */

#ifdef CreateWindow

#undef CreateWindow

#endif

extern SDL_WinRTApp ^ SDL_WinRTGlobalApp;

#define WINRTVID_DRIVER_NAME "winrt"

/* Initialization/Query functions */

static int WINRT_VideoInit(_THIS);

static int WINRT_InitModes(_THIS);

static int WINRT_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);

static void WINRT_VideoQuit(_THIS);

/* Window functions */

static int WINRT_CreateWindow(_THIS, SDL_Window * window);

static void WINRT_DestroyWindow(_THIS, SDL_Window * window);

static SDL_bool WINRT_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info);

/* WinRT driver bootstrap functions */

static int

WINRT_Available(void)

{

return (1);

}

static void

WINRT_DeleteDevice(SDL_VideoDevice * device)

{

SDL_WinRTGlobalApp->SetSDLVideoDevice(NULL);

SDL_free(device);

}

static SDL_VideoDevice *

WINRT_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 = WINRT_VideoInit;

device->VideoQuit = WINRT_VideoQuit;

device->CreateWindow = WINRT_CreateWindow;

device->DestroyWindow = WINRT_DestroyWindow;

device->SetDisplayMode = WINRT_SetDisplayMode;

device->PumpEvents = WINRT_PumpEvents;

//device->CreateWindowFramebuffer = SDL_WINRT_CreateWindowFramebuffer;

//device->UpdateWindowFramebuffer = SDL_WINRT_UpdateWindowFramebuffer;

//device->DestroyWindowFramebuffer = SDL_WINRT_DestroyWindowFramebuffer;

device->GetWindowWMInfo = WINRT_GetWindowWMInfo;

device->free = WINRT_DeleteDevice;

SDL_WinRTGlobalApp->SetSDLVideoDevice(device);

return device;

}

VideoBootStrap WINRT_bootstrap = {

WINRTVID_DRIVER_NAME, "SDL Windows RT video driver",

WINRT_Available, WINRT_CreateDevice

};

int

WINRT_VideoInit(_THIS)

{

// TODO, WinRT: consider adding a hack to wait (here) for the app's orientation to finish getting set (before the initial display mode is set up)

if (WINRT_InitModes(_this) < 0) {

return -1;

}

WINRT_InitMouse(_this);

return 0;

}

static int

WINRT_InitModes(_THIS)

{

SDL_DisplayMode mode = SDL_WinRTGlobalApp->GetMainDisplayMode();

if (SDL_AddBasicVideoDisplay(&mode) < 0) {

return -1;

}

SDL_AddDisplayMode(&_this->displays[0], &mode);

return 0;

}

static int

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

{

return 0;

}

void

WINRT_VideoQuit(_THIS)

{

WINRT_QuitMouse(_this);

}

int

WINRT_CreateWindow(_THIS, SDL_Window * window)

{

// Make sure that only one window gets created, at least until multimonitor

// support is added.

if (SDL_WinRTGlobalApp->HasSDLWindowData())

{

SDL_SetError("WinRT only supports one window");

return -1;

}

SDL_WindowData *data = new SDL_WindowData;

if (!data) {

SDL_OutOfMemory();

return -1;

}

window->driverdata = data;

data->sdlWindow = window;

data->coreWindow = CoreWindow::GetForCurrentThread();

/* Make sure the window is considered to be positioned at {0,0},

and is considered fullscreen, shown, and the like.

*/

window->x = 0;

window->y = 0;

window->flags =

SDL_WINDOW_FULLSCREEN |

SDL_WINDOW_SHOWN |

SDL_WINDOW_BORDERLESS |

SDL_WINDOW_MAXIMIZED |

SDL_WINDOW_INPUT_GRABBED;

/* HACK from DLudwig: The following line of code prevents

SDL_CreateWindow and SDL_UpdateFullscreenMode from trying to resize

the window after the call to WINRT_CreateWindow returns.

This hack should allow a window to be created in virtually any size,

and more importantly, it allows a window's framebuffer, as created and

retrieved via SDL_GetWindowSurface, to be in any size. This can be

utilized by apps centered around software rendering, such as ports

of older apps. The app can have SDL create a framebuffer in any size

it chooses. SDL will scale the framebuffer to the native

screen size on the GPU (via SDL_UpdateWindowSurface).

*/

_this->displays[0].fullscreen_window = window;

/* Further prevent any display resizing, and make sure SDL_GetWindowDisplayMode

can report the correct size of windows, by creating a new display

mode in the requested size. To note, if the window is being created in

the device's native screen size, SDL_AddDisplayMode will do nothing.

*/

window->fullscreen_mode = SDL_WinRTGlobalApp->GetMainDisplayMode();

window->fullscreen_mode.w = window->w;

window->fullscreen_mode.h = window->h;

SDL_AddDisplayMode(&_this->displays[0], &window->fullscreen_mode);

/* TODO: Consider removing custom display modes in WINRT_DestroyWindow. */

/* Make sure the WinRT app's IFramworkView can post events on

behalf of SDL:

*/

SDL_WinRTGlobalApp->SetSDLWindowData(data);

/* All done! */

return 0;

}

void

WINRT_DestroyWindow(_THIS, SDL_Window * window)

{

SDL_WindowData * data = (SDL_WindowData *) window->driverdata;

if (SDL_WinRTGlobalApp->HasSDLWindowData() &&

SDL_WinRTGlobalApp->GetSDLWindowData()->sdlWindow == window)

{

SDL_WinRTGlobalApp->SetSDLWindowData(NULL);

}

if (data) {

// Delete the internal window data:

delete data;

data = NULL;

}

}

SDL_bool

WINRT_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)

{

SDL_WindowData * data = (SDL_WindowData *) window->driverdata;

if (info->version.major <= SDL_MAJOR_VERSION) {

info->subsystem = SDL_SYSWM_WINDOWSRT;

info->info.winrt.window = reinterpret_cast<IUnknown *>(data->coreWindow.Get());

return SDL_TRUE;

} else {

SDL_SetError("Application not compiled with SDL %d.%d\n",

SDL_MAJOR_VERSION, SDL_MINOR_VERSION);

return SDL_FALSE;

}

return SDL_FALSE;

}

#endif /* SDL_VIDEO_DRIVER_WINRT */

/* vi: set ts=4 sw=4 expandtab: */