/*

  Simple DirectMedia Layer

  Copyright (C) 1997-2015 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.

*/

/*

  Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com>

*/

#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_MIR

#include "SDL_video.h"

#include "SDL_mirframebuffer.h"

#include "SDL_mirmouse.h"

#include "SDL_miropengl.h"

#include "SDL_mirvideo.h"

#include "SDL_mirwindow.h"

#include "SDL_mirdyn.h"

#define MIR_DRIVER_NAME "mir"

static int

MIR_VideoInit(_THIS);

static void

MIR_VideoQuit(_THIS);

static int

MIR_GetDisplayBounds(_THIS, SDL_VideoDisplay* display, SDL_Rect* rect);

static void

MIR_GetDisplayModes(_THIS, SDL_VideoDisplay* sdl_display);

static int

MIR_SetDisplayMode(_THIS, SDL_VideoDisplay* sdl_display, SDL_DisplayMode* mode);

static SDL_WindowShaper*

MIR_CreateShaper(SDL_Window* window)

{

    /* FIXME Im not sure if mir support this atm, will have to come back to this */

    return NULL;

}

static int

MIR_SetWindowShape(SDL_WindowShaper* shaper, SDL_Surface* shape, SDL_WindowShapeMode* shape_mode)

{

    return SDL_Unsupported();

}

static int

MIR_ResizeWindowShape(SDL_Window* window)

{

    return SDL_Unsupported();

}

static int

MIR_Available()

{

    int available = 0;

    if (SDL_MIR_LoadSymbols()) {

        /* !!! FIXME: try to make a MirConnection here. */

        available = 1;

        SDL_MIR_UnloadSymbols();

    }

    return available;

}

static void

MIR_DeleteDevice(SDL_VideoDevice* device)

{

    SDL_free(device);

    SDL_MIR_UnloadSymbols();

}

void

MIR_PumpEvents(_THIS)

{

}

static SDL_VideoDevice*

MIR_CreateDevice(int device_index)

{

    MIR_Data* mir_data;

    SDL_VideoDevice* device = NULL;

    if (!SDL_MIR_LoadSymbols()) {

        return NULL;

    }

    device = SDL_calloc(1, sizeof(SDL_VideoDevice));

    if (!device) {

        SDL_MIR_UnloadSymbols();

        SDL_OutOfMemory();

        return NULL;

    }

    mir_data = SDL_calloc(1, sizeof(MIR_Data));

    if (!mir_data) {

        SDL_free(device);

        SDL_MIR_UnloadSymbols();

        SDL_OutOfMemory();

        return NULL;

    }

    device->driverdata = mir_data;

    /* mirvideo */

    device->VideoInit        = MIR_VideoInit;

    device->VideoQuit        = MIR_VideoQuit;

    device->GetDisplayBounds = MIR_GetDisplayBounds;

    device->GetDisplayModes  = MIR_GetDisplayModes;

    device->SetDisplayMode   = MIR_SetDisplayMode;

    device->free             = MIR_DeleteDevice;

    /* miropengles */

    device->GL_SwapWindow      = MIR_GL_SwapWindow;

    device->GL_MakeCurrent     = MIR_GL_MakeCurrent;

    device->GL_CreateContext   = MIR_GL_CreateContext;

    device->GL_DeleteContext   = MIR_GL_DeleteContext;

    device->GL_LoadLibrary     = MIR_GL_LoadLibrary;

    device->GL_UnloadLibrary   = MIR_GL_UnloadLibrary;

    device->GL_GetSwapInterval = MIR_GL_GetSwapInterval;

    device->GL_SetSwapInterval = MIR_GL_SetSwapInterval;

    device->GL_GetProcAddress  = MIR_GL_GetProcAddress;

    /* mirwindow */

    device->CreateWindow        = MIR_CreateWindow;

    device->DestroyWindow       = MIR_DestroyWindow;

    device->GetWindowWMInfo     = MIR_GetWindowWMInfo;

    device->SetWindowFullscreen = MIR_SetWindowFullscreen;

    device->MaximizeWindow      = MIR_MaximizeWindow;

    device->MinimizeWindow      = MIR_MinimizeWindow;

    device->RestoreWindow       = MIR_RestoreWindow;

    device->CreateWindowFrom     = NULL;

    device->SetWindowTitle       = NULL;

    device->SetWindowIcon        = NULL;

    device->SetWindowPosition    = NULL;

    device->SetWindowSize        = NULL;

    device->SetWindowMinimumSize = NULL;

    device->SetWindowMaximumSize = NULL;

    device->ShowWindow           = NULL;

    device->HideWindow           = NULL;

    device->RaiseWindow          = NULL;

    device->SetWindowBordered    = NULL;

    device->SetWindowGammaRamp   = NULL;

    device->GetWindowGammaRamp   = NULL;

    device->SetWindowGrab        = NULL;

    device->OnWindowEnter        = NULL;

    /* mirframebuffer */

    device->CreateWindowFramebuffer  = MIR_CreateWindowFramebuffer;

    device->UpdateWindowFramebuffer  = MIR_UpdateWindowFramebuffer;

    device->DestroyWindowFramebuffer = MIR_DestroyWindowFramebuffer;

    device->shape_driver.CreateShaper      = MIR_CreateShaper;

    device->shape_driver.SetWindowShape    = MIR_SetWindowShape;

    device->shape_driver.ResizeWindowShape = MIR_ResizeWindowShape;

    device->PumpEvents = MIR_PumpEvents;

    device->SuspendScreenSaver = NULL;

    device->StartTextInput   = NULL;

    device->StopTextInput    = NULL;

    device->SetTextInputRect = NULL;

    device->HasScreenKeyboardSupport = NULL;

    device->ShowScreenKeyboard       = NULL;

    device->HideScreenKeyboard       = NULL;

    device->IsScreenKeyboardShown    = NULL;

    device->SetClipboardText = NULL;

    device->GetClipboardText = NULL;

    device->HasClipboardText = NULL;

    device->ShowMessageBox = NULL;

    return device;

}

VideoBootStrap MIR_bootstrap = {

    MIR_DRIVER_NAME, "SDL Mir video driver",

    MIR_Available, MIR_CreateDevice

};

static void

MIR_SetCurrentDisplayMode(MirDisplayOutput const* out, SDL_VideoDisplay* display)

{

    SDL_DisplayMode mode = {

        .format = SDL_PIXELFORMAT_RGB888,

        .w = out->modes[out->current_mode].horizontal_resolution,

        .h = out->modes[out->current_mode].vertical_resolution,

        .refresh_rate = out->modes[out->current_mode].refresh_rate,

        .driverdata = NULL

    };

    display->desktop_mode = mode;

    display->current_mode = mode;

}

static void

MIR_AddAllModesFromDisplay(MirDisplayOutput const* out, SDL_VideoDisplay* display)

{

    int n_mode;

    for (n_mode = 0; n_mode < out->num_modes; ++n_mode) {

        SDL_DisplayMode mode = {

            .format = SDL_PIXELFORMAT_RGB888,

            .w = out->modes[n_mode].horizontal_resolution,

            .h = out->modes[n_mode].vertical_resolution,

            .refresh_rate = out->modes[n_mode].refresh_rate,

            .driverdata = NULL

        };

        SDL_AddDisplayMode(display, &mode);

    }

}

static void

MIR_InitDisplays(_THIS)

{

    MIR_Data* mir_data = _this->driverdata;

    int d;

    MirDisplayConfiguration* display_config = MIR_mir_connection_create_display_config(mir_data->connection);

    for (d = 0; d < display_config->num_outputs; d++) {

        MirDisplayOutput const* out = display_config->outputs + d;

        SDL_VideoDisplay display;

        SDL_zero(display);

        if (out->used &&

            out->connected &&

            out->num_modes &&

            out->current_mode < out->num_modes) {

            MIR_SetCurrentDisplayMode(out, &display);

            MIR_AddAllModesFromDisplay(out, &display);

            SDL_AddVideoDisplay(&display);

        }

    }

    MIR_mir_display_config_destroy(display_config);

}

int

MIR_VideoInit(_THIS)

{

    MIR_Data* mir_data = _this->driverdata;

    mir_data->connection = MIR_mir_connect_sync(NULL, __PRETTY_FUNCTION__);

    mir_data->software = SDL_FALSE;

    if (!MIR_mir_connection_is_valid(mir_data->connection))

        return SDL_SetError("Failed to connect to the Mir Server");

    MIR_InitDisplays(_this);

    MIR_InitMouse();

    return 0;

}

void

MIR_VideoQuit(_THIS)

{

    MIR_Data* mir_data = _this->driverdata;

    MIR_FiniMouse();

    MIR_GL_DeleteContext(_this, NULL);

    MIR_GL_UnloadLibrary(_this);

    MIR_mir_connection_release(mir_data->connection);

    SDL_free(mir_data);

    _this->driverdata = NULL;

}

static int

MIR_GetDisplayBounds(_THIS, SDL_VideoDisplay* display, SDL_Rect* rect)

{

    MIR_Data* mir_data = _this->driverdata;

    int d;

    MirDisplayConfiguration* display_config = MIR_mir_connection_create_display_config(mir_data->connection);

    for (d = 0; d < display_config->num_outputs; d++) {

        MirDisplayOutput const* out = display_config->outputs + d;

        if (out->used &&

            out->connected &&

            out->num_modes &&

            out->current_mode < out->num_modes) {

            rect->x = out->position_x;

            rect->y = out->position_y;

            rect->w = out->modes->horizontal_resolution;

            rect->h = out->modes->vertical_resolution;

        }

    }

    MIR_mir_display_config_destroy(display_config);

    return 0;

}

static void

MIR_GetDisplayModes(_THIS, SDL_VideoDisplay* sdl_display)

{

}

static int

MIR_SetDisplayMode(_THIS, SDL_VideoDisplay* sdl_display, SDL_DisplayMode* mode)

{

    return 0;

}

#endif /* SDL_VIDEO_DRIVER_MIR */

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