/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2010 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

#include "SDL_syswm.h"

#include "../SDL_sysvideo.h"

#include "../../events/SDL_keyboard_c.h"

#include "../../video/SDL_pixels_c.h"

#include "SDL_DirectFB_video.h"

#if SDL_DIRECTFB_OPENGL

#include "SDL_DirectFB_opengl.h"

#endif

static void DirectFB_AdjustWindowSurface(_THIS, SDL_Window * window);

int

DirectFB_CreateWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_DEVICEDATA(_this);

    SDL_DFB_DISPLAYDATA(_this, window);

    DFB_WindowData *windata = NULL;

    DFBWindowOptions wopts;

    DFBWindowDescription desc;

    int x, y;

    SDL_DFB_CALLOC(window->driverdata, 1, sizeof(DFB_WindowData));

    windata = (DFB_WindowData *) window->driverdata;

    windata->is_managed = devdata->has_own_wm;

    SDL_DFB_CHECKERR(devdata->dfb->SetCooperativeLevel(devdata->dfb,

                                                       DFSCL_NORMAL));

    SDL_DFB_CHECKERR(dispdata->layer->SetCooperativeLevel(dispdata->layer,

                                                          DLSCL_ADMINISTRATIVE));

    /* Fill the window description. */

    if (window->x == SDL_WINDOWPOS_CENTERED) {

        x = (dispdata->cw - window->w) / 2;

    } else if (window->x == SDL_WINDOWPOS_UNDEFINED) {

        x = 0;

    } else {

        x = window->x;

    }

    if (window->y == SDL_WINDOWPOS_CENTERED) {

        y = (dispdata->ch - window->h) / 2;

    } else if (window->y == SDL_WINDOWPOS_UNDEFINED) {

        y = 0;

    } else {

        y = window->y;

    }

    if (window->flags & SDL_WINDOW_FULLSCREEN) {

        x = 0;

        y = 0;

    }

    DirectFB_WM_AdjustWindowLayout(window, window->flags, window->w, window->h);

    /* Create Window */

    desc.flags =

        DWDESC_WIDTH | DWDESC_HEIGHT | DWDESC_PIXELFORMAT | DWDESC_POSX

        | DWDESC_POSY | DWDESC_SURFACE_CAPS;

    desc.posx = x;

    desc.posy = y;

    desc.width = windata->size.w;

    desc.height = windata->size.h;

    desc.pixelformat = dispdata->pixelformat;

    desc.surface_caps = DSCAPS_PREMULTIPLIED;

    /* Create the window. */

    SDL_DFB_CHECKERR(dispdata->layer->CreateWindow(dispdata->layer, &desc,

                                                   &windata->window));

    /* Set Options */

    SDL_DFB_CHECK(windata->window->GetOptions(windata->window, &wopts));

    if (window->flags & SDL_WINDOW_RESIZABLE)

        wopts |= DWOP_SCALE;

    else

        wopts |= DWOP_KEEP_SIZE;

    if (window->flags & SDL_WINDOW_FULLSCREEN) {

        wopts |= DWOP_KEEP_POSITION | DWOP_KEEP_STACKING | DWOP_KEEP_SIZE;

        SDL_DFB_CHECK(windata->window->SetStackingClass(windata->window, DWSC_UPPER));

    }

    SDL_DFB_CHECK(windata->window->SetOptions(windata->window, wopts));

    /* See what we got */

    SDL_DFB_CHECKERR(DirectFB_WM_GetClientSize

                     (_this, window, &window->w, &window->h));

    /* Get the window's surface. */

    SDL_DFB_CHECKERR(windata->window->GetSurface(windata->window,

                                                 &windata->window_surface));

    /* And get a subsurface for rendering */

    SDL_DFB_CHECKERR(windata->window_surface->

                     GetSubSurface(windata->window_surface, &windata->client,

                                   &windata->surface));

    SDL_DFB_CHECK(windata->window->SetOpacity(windata->window, 0xFF));

    /* Create Eventbuffer */

    SDL_DFB_CHECKERR(windata->window->CreateEventBuffer(windata->window,

                                                        &windata->

                                                        eventbuffer));

    SDL_DFB_CHECKERR(windata->window->

                     EnableEvents(windata->window, DWET_ALL));

    /* Create a font */

    /* FIXME: once during Video_Init */

    windata->font = NULL;

    /* Make it the top most window. */

    SDL_DFB_CHECK(windata->window->RaiseToTop(windata->window));

    /* remember parent */

    windata->sdl_window = window;

    /* Add to list ... */

    windata->next = devdata->firstwin;

    windata->opacity = 0xFF;

    devdata->firstwin = windata;

    /* Draw Frame */

    DirectFB_WM_RedrawLayout(_this, window);

    return 0;

  error:

    SDL_DFB_RELEASE(windata->window);

    SDL_DFB_RELEASE(windata->surface);

    return -1;

}

int

DirectFB_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)

{

    SDL_Unsupported();

    return -1;

}

void

DirectFB_SetWindowTitle(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    if (windata->is_managed) {

        windata->wm_needs_redraw = 1;

        DirectFB_WM_RedrawLayout(_this, window);

    } else

        SDL_Unsupported();

}

void

DirectFB_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)

{

    SDL_DFB_DEVICEDATA(_this);

    SDL_DFB_WINDOWDATA(window);

    SDL_Surface *surface = NULL;

    if (icon) {

        SDL_PixelFormat format;

        DFBSurfaceDescription dsc;

        Uint32 *dest;

        Uint32 *p;

        int pitch, i;

        /* Convert the icon to ARGB for modern window managers */

        SDL_InitFormat(&format, 32, 0x00FF0000, 0x0000FF00, 0x000000FF,

                       0xFF000000);

        surface = SDL_ConvertSurface(icon, &format, 0);

        if (!surface) {

            return;

        }

        dsc.flags =

            DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;

        dsc.caps = DSCAPS_VIDEOONLY;

        dsc.width = surface->w;

        dsc.height = surface->h;

        dsc.pixelformat = DSPF_ARGB;

        SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc,

                                                     &windata->icon));

        SDL_DFB_CHECKERR(windata->icon->Lock(windata->icon, DSLF_WRITE,

                                             (void *) &dest, &pitch));

        p = surface->pixels;

        for (i = 0; i < surface->h; i++)

            memcpy((char *) dest + i * pitch,

                   (char *) p + i * surface->pitch, 4 * surface->w);

        SDL_DFB_CHECK(windata->icon->Unlock(windata->icon));

        SDL_FreeSurface(surface);

    } else {

        SDL_DFB_RELEASE(windata->icon);

    }

    return;

  error:

    if (surface)

        SDL_FreeSurface(surface);

    SDL_DFB_RELEASE(windata->icon);

    return;

}

void

DirectFB_SetWindowPosition(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    int x, y;

    if (window->y == SDL_WINDOWPOS_UNDEFINED)

        y = 0;

    else

        y = window->y;

    if (window->x == SDL_WINDOWPOS_UNDEFINED)

        x = 0;

    else

        x = window->x;

    if (window->flags & SDL_WINDOW_FULLSCREEN) {

        x = 0;

        y = 0;

    }

    DirectFB_WM_AdjustWindowLayout(window, window->flags, window->w, window->h);

    SDL_DFB_CHECK(windata->window->MoveTo(windata->window, x, y));

}

void

DirectFB_SetWindowSize(_THIS, SDL_Window * window)

{

    //SDL_DFB_DEVICEDATA(_this);

    SDL_DFB_WINDOWDATA(window);

    if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {

        int cw;

        int ch;

        /* Make sure all events are disabled for this operation ! */

        SDL_DFB_CHECKERR(windata->window->DisableEvents(windata->window,

                                                        DWET_ALL));

        SDL_DFB_CHECKERR(DirectFB_WM_GetClientSize(_this, window, &cw, &ch));

        if (cw != window->w || ch != window->h) {

		    DirectFB_WM_AdjustWindowLayout(window, window->flags, window->w, window->h);

            SDL_DFB_CHECKERR(windata->window->Resize(windata->window,

                                                     windata->size.w,

                                                     windata->size.h));

        }

        SDL_DFB_CHECKERR(DirectFB_WM_GetClientSize

                     (_this, window, &window->w, &window->h));

        DirectFB_AdjustWindowSurface(_this, window);

        SDL_DFB_CHECKERR(windata->window->EnableEvents(windata->window,

                                                       DWET_ALL));

    }

    return;

  error:

    SDL_DFB_CHECK(windata->window->EnableEvents(windata->window, DWET_ALL));

    return;

}

void

DirectFB_ShowWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    SDL_DFB_CHECK(windata->window->SetOpacity(windata->window, windata->opacity));

}

void

DirectFB_HideWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    SDL_DFB_CHECK(windata->window->GetOpacity(windata->window, &windata->opacity));

    SDL_DFB_CHECK(windata->window->SetOpacity(windata->window, 0));

}

void

DirectFB_RaiseWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    SDL_DFB_CHECK(windata->window->RaiseToTop(windata->window));

    SDL_DFB_CHECK(windata->window->RequestFocus(windata->window));

}

void

DirectFB_MaximizeWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    if (windata->is_managed) {

        DirectFB_WM_MaximizeWindow(_this, window);

    } else

        SDL_Unsupported();

}

void

DirectFB_MinimizeWindow(_THIS, SDL_Window * window)

{

    /* FIXME: Size to 32x32 ? */

    SDL_Unsupported();

}

void

DirectFB_RestoreWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    if (windata->is_managed) {

        DirectFB_WM_RestoreWindow(_this, window);

    } else

        SDL_Unsupported();

}

void

DirectFB_SetWindowGrab(_THIS, SDL_Window * window)

{

    SDL_DFB_DEVICEDATA(_this);

    SDL_DFB_WINDOWDATA(window);

    DFB_WindowData *gwindata = ((devdata->grabbed_window) ? (DFB_WindowData *) ((devdata->grabbed_window)->driverdata) : NULL);

    if ((window->flags & SDL_WINDOW_INPUT_GRABBED)) {

        if (gwindata != NULL)

        {

		    SDL_DFB_CHECK(gwindata->window->UngrabPointer(gwindata->window));

		    SDL_DFB_CHECK(gwindata->window->UngrabKeyboard(gwindata->window));

        }

        SDL_DFB_CHECK(windata->window->GrabPointer(windata->window));

        SDL_DFB_CHECK(windata->window->GrabKeyboard(windata->window));

        devdata->grabbed_window = window;

    } else {

        SDL_DFB_CHECK(windata->window->UngrabPointer(windata->window));

        SDL_DFB_CHECK(windata->window->UngrabKeyboard(windata->window));

        devdata->grabbed_window = NULL;

    }

}

void

DirectFB_DestroyWindow(_THIS, SDL_Window * window)

{

    SDL_DFB_DEVICEDATA(_this);

    SDL_DFB_WINDOWDATA(window);

    DFB_WindowData *p;

    /* Some cleanups */

    SDL_DFB_CHECK(windata->window->UngrabPointer(windata->window));

    SDL_DFB_CHECK(windata->window->UngrabKeyboard(windata->window));

#if SDL_DIRECTFB_OPENGL

	DirectFB_GL_DestroyWindowContexts(_this, window);

#endif

    SDL_DFB_CHECK(windata->window_surface->SetFont(windata->window_surface, NULL));

    SDL_DFB_CHECK(windata->surface->ReleaseSource(windata->surface));

    SDL_DFB_CHECK(windata->window_surface->ReleaseSource(windata->window_surface));

  	SDL_DFB_RELEASE(windata->icon);

    SDL_DFB_RELEASE(windata->font);

    SDL_DFB_RELEASE(windata->eventbuffer);

    SDL_DFB_RELEASE(windata->surface);

    SDL_DFB_RELEASE(windata->window_surface);

    SDL_DFB_RELEASE(windata->window);

    /* Remove from list ... */

    p = devdata->firstwin;

    while (p && p->next != windata)

        p = p->next;

    if (p)

        p->next = windata->next;

    else

        devdata->firstwin = windata->next;

    SDL_free(windata);

    return;

}

SDL_bool

DirectFB_GetWindowWMInfo(_THIS, SDL_Window * window,

                         struct SDL_SysWMinfo * info)

{

    SDL_Unsupported();

    return SDL_FALSE;

}

static void

DirectFB_AdjustWindowSurface(_THIS, SDL_Window * window)

{

    SDL_DFB_WINDOWDATA(window);

    int adjust = windata->wm_needs_redraw;

    int cw, ch;

    DirectFB_WM_AdjustWindowLayout(window, window->flags, window->w, window->h);

    SDL_DFB_CHECKERR(windata->

                     window_surface->GetSize(windata->window_surface, &cw,

                                             &ch));

    if (cw != windata->size.w || ch != windata->size.h) {

        adjust = 1;

    }

    if (adjust) {

#if SDL_DIRECTFB_OPENGL

		DirectFB_GL_FreeWindowContexts(_this, window);

#endif

#if DFB_VERSION_ATLEAST(1,2,1)

        SDL_DFB_CHECKERR(windata->window->ResizeSurface(windata->window,

                                                        windata->size.w,

                                                        windata->size.h));

        SDL_DFB_CHECKERR(windata->surface->MakeSubSurface(windata->surface,

                                                          windata->

                                                          window_surface,

                                                          &windata->client));

#else

        DFBWindowOptions opts;

        SDL_DFB_CHECKERR(windata->window->GetOptions(windata->window, &opts));

        /* recreate subsurface */

        SDL_DFB_RELEASE(windata->surface);

        if (opts & DWOP_SCALE)

            SDL_DFB_CHECKERR(windata->window->ResizeSurface(windata->window,

                                                            windata->size.w,

                                                            windata->size.h));

        SDL_DFB_CHECKERR(windata->window_surface->

                         GetSubSurface(windata->window_surface,

                                       &windata->client, &windata->surface));

#endif

        DirectFB_WM_RedrawLayout(_this, window);

#if SDL_DIRECTFB_OPENGL

		DirectFB_GL_ReAllocWindowContexts(_this, window);

#endif

   }

  error:

    return;

}