C++ SDL_GetDisplayForWindow函数代码示例

SDL_bool
KMSDRM_GLES_SetupCrtc(_THIS, SDL_Window * window) {
    SDL_WindowData *wdata = ((SDL_WindowData *) window->driverdata);
    SDL_DisplayData *displaydata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata;
    SDL_VideoData *vdata = ((SDL_VideoData *)_this->driverdata);
    KMSDRM_FBInfo *fb_info;

    if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, wdata->egl_surface))) {
	SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "eglSwapBuffers failed on CRTC setup");
	return SDL_FALSE;
    }

    wdata->next_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs);
    if (wdata->next_bo == NULL) {
	SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not lock GBM surface front buffer on CRTC setup");
	return SDL_FALSE;
    }

    fb_info = KMSDRM_FBFromBO(_this, wdata->next_bo);
    if (fb_info == NULL) {
	return SDL_FALSE;
    }

    if(KMSDRM_drmModeSetCrtc(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id,
			    0, 0, &vdata->saved_conn_id, 1, &displaydata->cur_mode) != 0) {
       SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not set up CRTC to a GBM buffer");
       return SDL_FALSE;

    }
    
    wdata->crtc_ready = SDL_TRUE;
    return SDL_TRUE;
}

static SDL_Renderer *
NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
{
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    SDL_DisplayMode *displayMode = &display->current_mode;
    SDL_Renderer *renderer;
    NDS_RenderData *data;
    int bpp;
    Uint32 Rmask, Gmask, Bmask, Amask;

	if (displayMode->format != SDL_PIXELFORMAT_ABGR1555) {
		SDL_SetError("Unsupported pixel format (%x)", displayMode->format);
		return NULL;
	}

    if (!SDL_PixelFormatEnumToMasks(displayMode->format, &bpp,
                                    &Rmask, &Gmask, &Bmask, &Amask)) {
        SDL_SetError("Unknown display format");
        return NULL;
    }

    renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
    if (!renderer) {
        SDL_OutOfMemory();
        return NULL;
    }

    data = (NDS_RenderData *) SDL_calloc(1, sizeof(*data));
    if (!data) {
        SDL_free(renderer);
        SDL_OutOfMemory();
        return NULL;
    }

    renderer->info.name = NDS_RenderDriver.info.name;
    renderer->info.flags = 0;
    renderer->info.num_texture_formats = NDS_RenderDriver.info.num_texture_formats;
    SDL_memcpy(renderer->info.texture_formats,
			   NDS_RenderDriver.info.texture_formats,
               sizeof(renderer->info.texture_formats));
    renderer->info.max_texture_width = NDS_RenderDriver.info.max_texture_width;
    renderer->info.max_texture_height = NDS_RenderDriver.info.max_texture_height;

	renderer->UpdateViewport = NDS_UpdateViewport;
    renderer->CreateTexture = NDS_CreateTexture;
	renderer->DestroyTexture = NDS_DestroyTexture;
	renderer->RenderCopy = NDS_RenderCopy;	
	renderer->UpdateTexture = NDS_UpdateTexture;
	renderer->LockTexture = NDS_LockTexture;
	renderer->UnlockTexture = NDS_UnlockTexture;
	renderer->RenderClear = NDS_RenderClear;
	renderer->RenderPresent = NDS_RenderPresent;
	renderer->RenderDrawPoints = NDS_RenderDrawPoints;
	renderer->RenderDrawLines = NDS_RenderDrawLines;
	renderer->RenderFillRects = NDS_RenderFillRects;

    return renderer;
}

static int
DirectFB_AcquireVidLayer(SDL_Renderer * renderer, SDL_Texture * texture)
{
    //SDL_DFB_RENDERERDATA(renderer);
    SDL_Window *window = renderer->window;
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    SDL_DFB_DEVICEDATA(display->device);
    DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
    DirectFB_TextureData *data = texture->driverdata;
    DFBDisplayLayerConfig layconf;
    DFBResult ret;

    if (devdata->use_yuv_direct && (dispdata->vidID >= 0)
        && (!dispdata->vidIDinuse)
        && SDL_ISPIXELFORMAT_FOURCC(data->format)) {
        layconf.flags =
            DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |
            DLCONF_SURFACE_CAPS;
        layconf.width = texture->w;
        layconf.height = texture->h;
        layconf.pixelformat = DirectFB_SDLToDFBPixelFormat(data->format);
        layconf.surface_caps = DSCAPS_VIDEOONLY | DSCAPS_DOUBLE;

        SDL_DFB_CHECKERR(devdata->dfb->GetDisplayLayer(devdata->dfb,
                                                       dispdata->vidID,
                                                       &dispdata->vidlayer));
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->SetCooperativeLevel(dispdata->vidlayer,
                                                       DLSCL_EXCLUSIVE));

        if (devdata->use_yuv_underlays) {
            ret = dispdata->vidlayer->SetLevel(dispdata->vidlayer, -1);
            if (ret != DFB_OK)
                SDL_DFB_DEBUG("Underlay Setlevel not supported\n");
        }
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->SetConfiguration(dispdata->vidlayer,
                                                    &layconf));
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->GetSurface(dispdata->vidlayer,
                                              &data->surface));
        dispdata->vidIDinuse = 1;
        data->display = display;
        return 0;
    }
    return 1;
  error:
    if (dispdata->vidlayer) {
        SDL_DFB_RELEASE(data->surface);
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->SetCooperativeLevel(dispdata->vidlayer,
                                                       DLSCL_ADMINISTRATIVE));
        SDL_DFB_RELEASE(dispdata->vidlayer);
    }
    return 1;
}

static void
DirectFB_DestroyRenderer(SDL_Renderer * renderer)
{
    DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(data->window);
#if 0
    if (display->palette) {
        SDL_DelPaletteWatch(display->palette, DisplayPaletteChanged, data);
    }
#endif

    SDL_free(data);
    SDL_free(renderer);
}

/* Warp the mouse to (x,y) */
static void
DirectFB_WarpMouse(SDL_Window * window, int x, int y)
{
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
    DFB_WindowData *windata = (DFB_WindowData *) window->driverdata;
    int cx, cy;

    SDL_DFB_CHECKERR(windata->dfbwin->GetPosition(windata->dfbwin, &cx, &cy));
    SDL_DFB_CHECKERR(dispdata->layer->WarpCursor(dispdata->layer,
                                                 cx + x + windata->client.x,
                                                 cy + y + windata->client.y));

  error:
    return;
}

void
SDL_IBus_UpdateTextRect(SDL_Rect *rect)
{
    SDL_Window *focused_win;
    SDL_SysWMinfo info;
    int x = 0, y = 0;
    SDL_DBusContext *dbus;

    if (rect) {
        SDL_memcpy(&ibus_cursor_rect, rect, sizeof(ibus_cursor_rect));
    }

    focused_win = SDL_GetKeyboardFocus();
    if (!focused_win) {
        return;
    }

    SDL_VERSION(&info.version);
    if (!SDL_GetWindowWMInfo(focused_win, &info)) {
        return;
    }

    SDL_GetWindowPosition(focused_win, &x, &y);
   
#if SDL_VIDEO_DRIVER_X11    
    if (info.subsystem == SDL_SYSWM_X11) {
        SDL_DisplayData *displaydata = (SDL_DisplayData *) SDL_GetDisplayForWindow(focused_win)->driverdata;
            
        Display *x_disp = info.info.x11.display;
        Window x_win = info.info.x11.window;
        int x_screen = displaydata->screen;
        Window unused;
            
        X11_XTranslateCoordinates(x_disp, x_win, RootWindow(x_disp, x_screen), 0, 0, &x, &y, &unused);
    }
#endif

    x += ibus_cursor_rect.x;
    y += ibus_cursor_rect.y;
        
    dbus = SDL_DBus_GetContext();
    
    if (IBus_CheckConnection(dbus)) {
        SDL_DBus_CallVoidMethodOnConnection(ibus_conn, IBUS_SERVICE, input_ctx_path, IBUS_INPUT_INTERFACE, "SetCursorLocation",
                DBUS_TYPE_INT32, &x, DBUS_TYPE_INT32, &y, DBUS_TYPE_INT32, &ibus_cursor_rect.w, DBUS_TYPE_INT32, &ibus_cursor_rect.h, DBUS_TYPE_INVALID);
    }
}

int
WIN_CreateWindow(_THIS, SDL_Window * window)
{
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    HWND hwnd;
    RECT rect;
    DWORD style = STYLE_BASIC;
    int x, y;
    int w, h;
    
    style |= GetWindowStyle(window);

    /* Figure out what the window area will be */
    rect.left = window->x;
    rect.top = window->y;
    rect.right = window->x + window->w;
    rect.bottom = window->y + window->h;
    AdjustWindowRectEx(&rect, style, FALSE, 0);
    x = rect.left;
    y = rect.top;
    w = (rect.right - rect.left);
    h = (rect.bottom - rect.top);

    hwnd =
        CreateWindow(SDL_Appname, TEXT(""), style, x, y, w, h, NULL, NULL,
                     SDL_Instance, NULL);
    if (!hwnd) {
        WIN_SetError("Couldn't create window");
        return -1;
    }

    WIN_PumpEvents(_this);

    if (SetupWindowData(_this, window, hwnd, SDL_TRUE) < 0) {
        DestroyWindow(hwnd);
        return -1;
    }
#if SDL_VIDEO_OPENGL_WGL
    if (window->flags & SDL_WINDOW_OPENGL) {
        if (WIN_GL_SetupWindow(_this, window) < 0) {
            WIN_DestroyWindow(_this, window);
            return -1;
        }
    }
#endif
    return 0;
}

void
WIN_SetWindowPosition(_THIS, SDL_Window * window)
{
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
    RECT rect;
    SDL_Rect bounds;
    DWORD style;
    HWND top;
    BOOL menu;
    int x, y;
    int w, h;

    /* Figure out what the window area will be */
    if (window->flags & SDL_WINDOW_FULLSCREEN) {
        top = HWND_TOPMOST;
    } else {
        top = HWND_NOTOPMOST;
    }
    style = GetWindowLong(hwnd, GWL_STYLE);
    rect.left = 0;
    rect.top = 0;
    rect.right = window->w;
    rect.bottom = window->h;
#ifdef _WIN32_WCE
    menu = FALSE;
#else
    menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);
#endif
    AdjustWindowRectEx(&rect, style, menu, 0);
    w = (rect.right - rect.left);
    h = (rect.bottom - rect.top);

    WIN_GetDisplayBounds(_this, display, &bounds);
    if (SDL_WINDOWPOS_ISCENTERED(window->x)) {
        x = bounds.x + (bounds.w - w) / 2;
    } else {
        x = window->x + rect.left;
    }
    if (SDL_WINDOWPOS_ISCENTERED(window->y)) {
        y = bounds.y + (bounds.h - h) / 2;
    } else {
        y = window->y + rect.top;
    }

    SetWindowPos(hwnd, top, x, y, 0, 0, (SWP_NOCOPYBITS | SWP_NOSIZE));
}

int
MIR_SetWindowGammaRamp(_THIS, SDL_Window* window, Uint16 const* ramp)
{
    MirOutput* output = SDL_GetDisplayForWindow(window)->driverdata;
    Uint32 ramp_size = 256;

    // FIXME Need to apply the changes to the output, once that public API function is around
    if (MIR_mir_output_is_gamma_supported(output) == mir_output_gamma_supported) {
        MIR_mir_output_set_gamma(output,
                                 ramp + ramp_size * 0,
                                 ramp + ramp_size * 1,
                                 ramp + ramp_size * 2,
                                 ramp_size);
        return 0;
    }

    return -1;
}

int
WIN_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
{
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
    HDC hdc;
    BOOL succeeded = FALSE;

    hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);
    if (hdc) {
        succeeded = GetDeviceGammaRamp(hdc, (LPVOID)ramp);
        if (!succeeded) {
            WIN_SetError("GetDeviceGammaRamp()");
        }
        DeleteDC(hdc);
    }
    return succeeded ? 0 : -1;
}

void
DirectFB_SetContext(_THIS, SDL_Window *window)
{
#if (DFB_VERSION_ATLEAST(1,0,0))
    /* FIXME: does not work on 1.0/1.2 with radeon driver
     *        the approach did work with the matrox driver
     *        This has simply no effect.
     */

    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;

	/* FIXME: should we handle the error */
    if (dispdata->vidIDinuse)
        SDL_DFB_CHECK(dispdata->vidlayer->SwitchContext(dispdata->vidlayer,
                                                           DFB_TRUE));
#endif
}

void
Android_SetScreenResolution(int width, int height, Uint32 format, float rate)
{
	static int times = 0;
	posix_print("#%i, Android_SetScreenResolution------(%ix%i), format: 0x%08x, rate: %7.2f, Android_Window: %p\n", 
		times, width, height, format, rate, Android_Window);

	SDL_VideoDevice* device;
	SDL_VideoDisplay *display;
    Android_ScreenWidth = width;
    Android_ScreenHeight = height;
    Android_ScreenFormat = format;
    Android_ScreenRate = rate;

    /*
      Update the resolution of the desktop mode, so that the window
      can be properly resized. The screen resolution change can for
      example happen when the Activity enters or exists immersive mode,
      which can happen after VideoInit().
    */
    device = SDL_GetVideoDevice();
    if (device && device->num_displays > 0)
    {
        display = &device->displays[0];
        display->desktop_mode.format = Android_ScreenFormat;
        display->desktop_mode.w = Android_ScreenWidth;
        display->desktop_mode.h = Android_ScreenHeight;
        display->desktop_mode.refresh_rate  = Android_ScreenRate;
    }

    if (Android_Window) {
        SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_RESIZED, width, height);

        /* Force the current mode to match the resize otherwise the SDL_WINDOWEVENT_RESTORED event
         * will fall back to the old mode */
        display = SDL_GetDisplayForWindow(Android_Window);

        display->current_mode.format = format;
        display->current_mode.w = width;
        display->current_mode.h = height;
        display->current_mode.refresh_rate = rate;
    }
	times ++;
}

int
MIR_GetWindowGammaRamp(_THIS, SDL_Window* window, Uint16* ramp)
{
    MirOutput* output = SDL_GetDisplayForWindow(window)->driverdata;
    Uint32 ramp_size = 256;

    if (MIR_mir_output_is_gamma_supported(output) == mir_output_gamma_supported) {
        if (MIR_mir_output_get_gamma_size(output) == ramp_size) {
            MIR_mir_output_get_gamma(output,
                                     ramp + ramp_size * 0,
                                     ramp + ramp_size * 1,
                                     ramp + ramp_size * 2,
                                     ramp_size);
            return 0;
        }
    }

    return -1;
}

int
FB_CreateWindow(_THIS, SDL_Window * window)
{
    SDL_WindowData *wdata;
    SDL_VideoDisplay *display;

    /* Allocate window internal data */
    wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
    if (wdata == NULL) {
        return SDL_OutOfMemory();
    }
    display = SDL_GetDisplayForWindow(window);

    /* Windows have one size for now */
    window->w = display->desktop_mode.w;
    window->h = display->desktop_mode.h;

    /* OpenGL ES is the law here, buddy */
    window->flags |= SDL_WINDOW_OPENGL;

    if (!_this->egl_data) {
        if (SDL_GL_LoadLibrary(NULL) < 0) {
            return -1;
        }
    }

    wdata->egl_surface = SDL_EGL_CreateSurface(_this, 0);
    if (wdata->egl_surface == EGL_NO_SURFACE) {
        return SDL_SetError("Could not create GLES window surface");
    }

    /* Setup driver data for this window */
    window->driverdata = wdata;

    /* One window, it always has focus */
    SDL_SetMouseFocus(window);
    SDL_SetKeyboardFocus(window);

    /* Window has been successfully created */
    return 0;
}

/* Show the specified cursor, or hide if cursor is NULL */
static int
DirectFB_ShowCursor(SDL_Cursor * cursor)
{
    SDL_DFB_CURSORDATA(cursor);
    DFBResult ret;
    SDL_Window *window;

    window = SDL_GetFocusWindow();
    if (!window)
        return -1;
    else {
        SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);

        if (display) {
            DFB_DisplayData *dispdata =
                (DFB_DisplayData *) display->driverdata;
            DFB_WindowData *windata = (DFB_WindowData *) window->driverdata;

            if (cursor)
                SDL_DFB_CHECKERR(windata->dfbwin->
                                 SetCursorShape(windata->dfbwin,
                                                curdata->surf, curdata->hotx,
                                                curdata->hoty));

            SDL_DFB_CHECKERR(dispdata->layer->
                             SetCooperativeLevel(dispdata->layer,
                                                 DLSCL_ADMINISTRATIVE));
            SDL_DFB_CHECKERR(dispdata->layer->
                             SetCursorOpacity(dispdata->layer,
                                              cursor ? 0xC0 : 0x00));
            SDL_DFB_CHECKERR(dispdata->layer->
                             SetCooperativeLevel(dispdata->layer,
                                                 DLSCL_SHARED));
        }
    }

    return 0;
  error:
    return -1;
}