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SDL_winrtvideo_cpp.h (3835B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
      4 
      5   This software is provided 'as-is', without any express or implied
      6   warranty.  In no event will the authors be held liable for any damages
      7   arising from the use of this software.
      8 
      9   Permission is granted to anyone to use this software for any purpose,
     10   including commercial applications, and to alter it and redistribute it
     11   freely, subject to the following restrictions:
     12 
     13   1. The origin of this software must not be misrepresented; you must not
     14      claim that you wrote the original software. If you use this software
     15      in a product, an acknowledgment in the product documentation would be
     16      appreciated but is not required.
     17   2. Altered source versions must be plainly marked as such, and must not be
     18      misrepresented as being the original software.
     19   3. This notice may not be removed or altered from any source distribution.
     20 */
     21 
     22 /* Windows includes: */
     23 #include <windows.h>
     24 #ifdef __cplusplus_winrt
     25 #include <agile.h>
     26 #endif
     27 
     28 /* SDL includes: */
     29 #include "SDL_video.h"
     30 #include "SDL_events.h"
     31 
     32 #if NTDDI_VERSION >= NTDDI_WINBLUE  /* ApplicationView's functionality only becomes
     33                                        useful for SDL in Win[Phone] 8.1 and up.
     34                                        Plus, it is not available at all in WinPhone 8.0. */
     35 #define SDL_WINRT_USE_APPLICATIONVIEW 1
     36 #endif
     37 
     38 extern "C" {
     39 #include "../SDL_sysvideo.h"
     40 #include "../SDL_egl_c.h"
     41 }
     42 
     43 /* Private display data */
     44 typedef struct SDL_VideoData {
     45     /* An object created by ANGLE/WinRT (OpenGL ES 2 for WinRT) that gets
     46      * passed to eglGetDisplay and eglCreateWindowSurface:
     47      */
     48     IUnknown *winrtEglWindow;
     49 
     50     /* Event token(s), for unregistering WinRT event handler(s).
     51        These are just a struct with a 64-bit integer inside them
     52     */
     53     Windows::Foundation::EventRegistrationToken gameBarIsInputRedirectedToken;
     54 
     55     /* A WinRT DisplayRequest, used for implementing SDL_*ScreenSaver() functions.
     56      * This is really a pointer to a 'ABI::Windows::System::Display::IDisplayRequest *',
     57      * It's casted to 'IUnknown *', to help with building SDL.
     58     */
     59     IUnknown *displayRequest;
     60 } SDL_VideoData;
     61 
     62 /* The global, WinRT, SDL Window.
     63    For now, SDL/WinRT only supports one window (due to platform limitations of
     64    WinRT.
     65 */
     66 extern SDL_Window * WINRT_GlobalSDLWindow;
     67 
     68 /* Updates one or more SDL_Window flags, by querying the OS' native windowing APIs.
     69    SDL_Window flags that can be updated should be specified in 'mask'.
     70 */
     71 extern void WINRT_UpdateWindowFlags(SDL_Window * window, Uint32 mask);
     72 extern "C" Uint32 WINRT_DetectWindowFlags(SDL_Window * window);  /* detects flags w/o applying them */
     73 
     74 /* Display mode internals */
     75 //typedef struct
     76 //{
     77 //    Windows::Graphics::Display::DisplayOrientations currentOrientation;
     78 //} SDL_DisplayModeData;
     79 
     80 #ifdef __cplusplus_winrt
     81 
     82 /* A convenience macro to get a WinRT display property */
     83 #if NTDDI_VERSION > NTDDI_WIN8
     84 #define WINRT_DISPLAY_PROPERTY(NAME) (Windows::Graphics::Display::DisplayInformation::GetForCurrentView()->NAME)
     85 #else
     86 #define WINRT_DISPLAY_PROPERTY(NAME) (Windows::Graphics::Display::DisplayProperties::NAME)
     87 #endif
     88 
     89 /* Converts DIPS to/from physical pixels */
     90 #define WINRT_DIPS_TO_PHYSICAL_PIXELS(DIPS)     ((int)(0.5f + (((float)(DIPS) * (float)WINRT_DISPLAY_PROPERTY(LogicalDpi)) / 96.f)))
     91 #define WINRT_PHYSICAL_PIXELS_TO_DIPS(PHYSPIX)  (((float)(PHYSPIX) * 96.f)/WINRT_DISPLAY_PROPERTY(LogicalDpi))
     92 
     93 /* Internal window data */
     94 struct SDL_WindowData
     95 {
     96     SDL_Window *sdlWindow;
     97     Platform::Agile<Windows::UI::Core::CoreWindow> coreWindow;
     98 #ifdef SDL_VIDEO_OPENGL_EGL
     99     EGLSurface egl_surface;
    100 #endif
    101 #if SDL_WINRT_USE_APPLICATIONVIEW
    102     Windows::UI::ViewManagement::ApplicationView ^ appView;
    103 #endif
    104 };
    105 
    106 #endif // ifdef __cplusplus_winrt