kc3-lang/SDL/src/video/winrt/SDL_winrtmouse.cpp

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• Hash : 3dcb451f
  Author :
  Date : 2014-04-09T21:29:19
  

  Added a README file regarding WinRT support To note, this file is currently formatted with CRLF line endings, rather than LF, to allow the file to be viewed with Notepad.

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• src/video/winrt/SDL_winrtmouse.cpp

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2014 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.
  */
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_WINRT
  
  /*
   * Windows includes:
   */
  #include <Windows.h>
  using namespace Windows::UI::Core;
  using Windows::UI::Core::CoreCursor;
  
  /*
   * SDL includes:
   */
  extern "C" {
  #include "SDL_assert.h"
  #include "../../events/SDL_mouse_c.h"
  #include "../../events/SDL_touch_c.h"
  #include "../SDL_sysvideo.h"
  #include "SDL_events.h"
  #include "SDL_log.h"
  }
  
  #include "../../core/winrt/SDL_winrtapp_direct3d.h"
  #include "SDL_winrtvideo_cpp.h"
  #include "SDL_winrtmouse_c.h"
  
  
  extern "C" SDL_bool WINRT_UsingRelativeMouseMode = SDL_FALSE;
  
  
  static SDL_Cursor *
  WINRT_CreateSystemCursor(SDL_SystemCursor id)
  {
      SDL_Cursor *cursor;
      CoreCursorType cursorType = CoreCursorType::Arrow;
  
      switch(id)
      {
      default:
          SDL_assert(0);
          return NULL;
      case SDL_SYSTEM_CURSOR_ARROW:     cursorType = CoreCursorType::Arrow; break;
      case SDL_SYSTEM_CURSOR_IBEAM:     cursorType = CoreCursorType::IBeam; break;
      case SDL_SYSTEM_CURSOR_WAIT:      cursorType = CoreCursorType::Wait; break;
      case SDL_SYSTEM_CURSOR_CROSSHAIR: cursorType = CoreCursorType::Cross; break;
      case SDL_SYSTEM_CURSOR_WAITARROW: cursorType = CoreCursorType::Wait; break;
      case SDL_SYSTEM_CURSOR_SIZENWSE:  cursorType = CoreCursorType::SizeNorthwestSoutheast; break;
      case SDL_SYSTEM_CURSOR_SIZENESW:  cursorType = CoreCursorType::SizeNortheastSouthwest; break;
      case SDL_SYSTEM_CURSOR_SIZEWE:    cursorType = CoreCursorType::SizeWestEast; break;
      case SDL_SYSTEM_CURSOR_SIZENS:    cursorType = CoreCursorType::SizeNorthSouth; break;
      case SDL_SYSTEM_CURSOR_SIZEALL:   cursorType = CoreCursorType::SizeAll; break;
      case SDL_SYSTEM_CURSOR_NO:        cursorType = CoreCursorType::UniversalNo; break;
      case SDL_SYSTEM_CURSOR_HAND:      cursorType = CoreCursorType::Hand; break;
      }
  
      cursor = (SDL_Cursor *) SDL_calloc(1, sizeof(*cursor));
      if (cursor) {
          /* Create a pointer to a COM reference to a cursor.  The extra
             pointer is used (on top of the COM reference) to allow the cursor
             to be referenced by the SDL_cursor's driverdata field, which is
             a void pointer.
          */
          CoreCursor ^* theCursor = new CoreCursor^(nullptr);
          *theCursor = ref new CoreCursor(cursorType, 0);
          cursor->driverdata = (void *) theCursor;
      } else {
          SDL_OutOfMemory();
      }
  
      return cursor;
  }
  
  static SDL_Cursor *
  WINRT_CreateDefaultCursor()
  {
      return WINRT_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
  }
  
  static void
  WINRT_FreeCursor(SDL_Cursor * cursor)
  {
      if (cursor->driverdata) {
          CoreCursor ^* theCursor = (CoreCursor ^*) cursor->driverdata;
          *theCursor = nullptr;       // Release the COM reference to the CoreCursor
          delete theCursor;           // Delete the pointer to the COM reference
      }
      SDL_free(cursor);
  }
  
  static int
  WINRT_ShowCursor(SDL_Cursor * cursor)
  {
      // TODO, WinRT, XAML: make WINRT_ShowCursor work when XAML support is enabled.
      if ( ! CoreWindow::GetForCurrentThread()) {
          return 0;
      }
  
      if (cursor) {
          CoreCursor ^* theCursor = (CoreCursor ^*) cursor->driverdata;
          CoreWindow::GetForCurrentThread()->PointerCursor = *theCursor;
      } else {
          CoreWindow::GetForCurrentThread()->PointerCursor = nullptr;
      }
      return 0;
  }
  
  static int
  WINRT_SetRelativeMouseMode(SDL_bool enabled)
  {
      WINRT_UsingRelativeMouseMode = enabled;
      return 0;
  }
  
  void
  WINRT_InitMouse(_THIS)
  {
      SDL_Mouse *mouse = SDL_GetMouse();
  
      /* DLudwig, Dec 3, 2012: WinRT does not currently provide APIs for
         the following features, AFAIK:
          - custom cursors  (multiple system cursors are, however, available)
          - programmatically moveable cursors
      */
  
  #if WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP
      //mouse->CreateCursor = WINRT_CreateCursor;
      mouse->CreateSystemCursor = WINRT_CreateSystemCursor;
      mouse->ShowCursor = WINRT_ShowCursor;
      mouse->FreeCursor = WINRT_FreeCursor;
      //mouse->WarpMouse = WINRT_WarpMouse;
      mouse->SetRelativeMouseMode = WINRT_SetRelativeMouseMode;
  
      SDL_SetDefaultCursor(WINRT_CreateDefaultCursor());
  #endif
  }
  
  void
  WINRT_QuitMouse(_THIS)
  {
  }
  
  #endif /* SDL_VIDEO_DRIVER_WINRT */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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