src/video/winrt/SDL_winrtvideo_cpp.h
author David Ludwig
Thu, 26 Nov 2015 00:41:39 -0500
changeset 9924 355cccccc7dc
parent 9619 b94b6d0bff0f
child 9931 0bb3dd1c95f2
permissions -rw-r--r--
WinRT: lots of display and windowing related fixes

This change-set fixes a lot of windowing related bugs, especially with
regards to Windows 8.x apps running on Windows 10 (which was the driver for
this work). The primary fixes include:
* listed display modes were wrong, especially when launching apps into a
non-fullscreen space
* reported window flags were often wrong, especially on Windows 10
* fullscreen/windowed mode switches weren't failing (they are not
programmatically possible in Win 8.x apps).
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2015 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 } SDL_VideoData;
    50 
    51 /* The global, WinRT, SDL Window.
    52    For now, SDL/WinRT only supports one window (due to platform limitations of
    53    WinRT.
    54 */
    55 extern SDL_Window * WINRT_GlobalSDLWindow;
    56 
    57 /* Updates one or more SDL_Window flags, by querying the OS' native windowing APIs.
    58    SDL_Window flags that can be updated should be specified in 'mask'.
    59 */
    60 extern void WINRT_UpdateWindowFlags(SDL_Window * window, Uint32 mask);
    61 extern "C" Uint32 WINRT_DetectWindowFlags(SDL_Window * window);  /* detects flags w/o applying them */
    62 
    63 /* Display mode internals */
    64 //typedef struct
    65 //{
    66 //    Windows::Graphics::Display::DisplayOrientations currentOrientation;
    67 //} SDL_DisplayModeData;
    68 
    69 #ifdef __cplusplus_winrt
    70 
    71 /* A convenience macro to get a WinRT display property */
    72 #if NTDDI_VERSION > NTDDI_WIN8
    73 #define WINRT_DISPLAY_PROPERTY(NAME) (Windows::Graphics::Display::DisplayInformation::GetForCurrentView()->NAME)
    74 #else
    75 #define WINRT_DISPLAY_PROPERTY(NAME) (Windows::Graphics::Display::DisplayProperties::NAME)
    76 #endif
    77 
    78 /* Converts DIPS to physical pixels */
    79 #define WINRT_DIPS_TO_PHYSICAL_PIXELS(DIPS) ((int)(0.5f + (((float)(DIPS) * (float)WINRT_DISPLAY_PROPERTY(LogicalDpi)) / 96.f)))
    80 
    81 
    82 /* Internal window data */
    83 struct SDL_WindowData
    84 {
    85     SDL_Window *sdlWindow;
    86     Platform::Agile<Windows::UI::Core::CoreWindow> coreWindow;
    87 #ifdef SDL_VIDEO_OPENGL_EGL
    88     EGLSurface egl_surface;
    89 #endif
    90 #if SDL_WINRT_USE_APPLICATIONVIEW
    91     Windows::UI::ViewManagement::ApplicationView ^ appView;
    92 #endif
    93 };
    94 
    95 #endif // ifdef __cplusplus_winrt