SDL  2.0
SDL_winrtmouse.cpp
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2016 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 #include "../../SDL_internal.h"
22 
23 #if SDL_VIDEO_DRIVER_WINRT
24 
25 /*
26  * Windows includes:
27  */
28 #include <Windows.h>
29 using namespace Windows::UI::Core;
30 using Windows::UI::Core::CoreCursor;
31 
32 /*
33  * SDL includes:
34  */
35 extern "C" {
36 #include "SDL_assert.h"
37 #include "../../events/SDL_mouse_c.h"
38 #include "../../events/SDL_touch_c.h"
39 #include "../SDL_sysvideo.h"
40 #include "SDL_events.h"
41 #include "SDL_log.h"
42 }
43 
44 #include "../../core/winrt/SDL_winrtapp_direct3d.h"
45 #include "SDL_winrtvideo_cpp.h"
46 #include "SDL_winrtmouse_c.h"
47 
48 
50 
51 
52 static SDL_Cursor *
53 WINRT_CreateSystemCursor(SDL_SystemCursor id)
54 {
56  CoreCursorType cursorType = CoreCursorType::Arrow;
57 
58  switch(id)
59  {
60  default:
61  SDL_assert(0);
62  return NULL;
63  case SDL_SYSTEM_CURSOR_ARROW: cursorType = CoreCursorType::Arrow; break;
64  case SDL_SYSTEM_CURSOR_IBEAM: cursorType = CoreCursorType::IBeam; break;
65  case SDL_SYSTEM_CURSOR_WAIT: cursorType = CoreCursorType::Wait; break;
66  case SDL_SYSTEM_CURSOR_CROSSHAIR: cursorType = CoreCursorType::Cross; break;
67  case SDL_SYSTEM_CURSOR_WAITARROW: cursorType = CoreCursorType::Wait; break;
68  case SDL_SYSTEM_CURSOR_SIZENWSE: cursorType = CoreCursorType::SizeNorthwestSoutheast; break;
69  case SDL_SYSTEM_CURSOR_SIZENESW: cursorType = CoreCursorType::SizeNortheastSouthwest; break;
70  case SDL_SYSTEM_CURSOR_SIZEWE: cursorType = CoreCursorType::SizeWestEast; break;
71  case SDL_SYSTEM_CURSOR_SIZENS: cursorType = CoreCursorType::SizeNorthSouth; break;
72  case SDL_SYSTEM_CURSOR_SIZEALL: cursorType = CoreCursorType::SizeAll; break;
73  case SDL_SYSTEM_CURSOR_NO: cursorType = CoreCursorType::UniversalNo; break;
74  case SDL_SYSTEM_CURSOR_HAND: cursorType = CoreCursorType::Hand; break;
75  }
76 
77  cursor = (SDL_Cursor *) SDL_calloc(1, sizeof(*cursor));
78  if (cursor) {
79  /* Create a pointer to a COM reference to a cursor. The extra
80  pointer is used (on top of the COM reference) to allow the cursor
81  to be referenced by the SDL_cursor's driverdata field, which is
82  a void pointer.
83  */
84  CoreCursor ^* theCursor = new CoreCursor^(nullptr);
85  *theCursor = ref new CoreCursor(cursorType, 0);
86  cursor->driverdata = (void *) theCursor;
87  } else {
89  }
90 
91  return cursor;
92 }
93 
94 static SDL_Cursor *
95 WINRT_CreateDefaultCursor()
96 {
97  return WINRT_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
98 }
99 
100 static void
101 WINRT_FreeCursor(SDL_Cursor * cursor)
102 {
103  if (cursor->driverdata) {
104  CoreCursor ^* theCursor = (CoreCursor ^*) cursor->driverdata;
105  *theCursor = nullptr; // Release the COM reference to the CoreCursor
106  delete theCursor; // Delete the pointer to the COM reference
107  }
108  SDL_free(cursor);
109 }
110 
111 static int
112 WINRT_ShowCursor(SDL_Cursor * cursor)
113 {
114  // TODO, WinRT, XAML: make WINRT_ShowCursor work when XAML support is enabled.
115  if ( ! CoreWindow::GetForCurrentThread()) {
116  return 0;
117  }
118 
119  if (cursor) {
120  CoreCursor ^* theCursor = (CoreCursor ^*) cursor->driverdata;
121  CoreWindow::GetForCurrentThread()->PointerCursor = *theCursor;
122  } else {
123  CoreWindow::GetForCurrentThread()->PointerCursor = nullptr;
124  }
125  return 0;
126 }
127 
128 static int
129 WINRT_SetRelativeMouseMode(SDL_bool enabled)
130 {
132  return 0;
133 }
134 
135 void
137 {
138  SDL_Mouse *mouse = SDL_GetMouse();
139 
140  /* DLudwig, Dec 3, 2012: WinRT does not currently provide APIs for
141  the following features, AFAIK:
142  - custom cursors (multiple system cursors are, however, available)
143  - programmatically moveable cursors
144  */
145 
146 #if WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP
147  //mouse->CreateCursor = WINRT_CreateCursor;
148  mouse->CreateSystemCursor = WINRT_CreateSystemCursor;
149  mouse->ShowCursor = WINRT_ShowCursor;
150  mouse->FreeCursor = WINRT_FreeCursor;
151  //mouse->WarpMouse = WINRT_WarpMouse;
152  mouse->SetRelativeMouseMode = WINRT_SetRelativeMouseMode;
153 
154  SDL_SetDefaultCursor(WINRT_CreateDefaultCursor());
155 #endif
156 }
157 
158 void
160 {
161 }
162 
163 #endif /* SDL_VIDEO_DRIVER_WINRT */
164 
165 /* vi: set ts=4 sw=4 expandtab: */
SDL_Mouse * SDL_GetMouse(void)
Definition: SDL_mouse.c:66
int(* ShowCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:52
int(* SetRelativeMouseMode)(SDL_bool enabled)
Definition: SDL_mouse_c.h:67
void WINRT_InitMouse(_THIS)
SDL_bool
Definition: SDL_stdinc.h:126
void * SDL_calloc(size_t nmemb, size_t size)
#define _THIS
void SDL_free(void *mem)
SDL_SystemCursor
Cursor types for SDL_CreateSystemCursor.
Definition: SDL_mouse.h:46
SDL_Cursor * cursor
Definition: testwm2.c:40
void SDL_SetDefaultCursor(SDL_Cursor *cursor)
Definition: SDL_mouse.c:55
GLenum GLenum GLsizei const GLuint GLboolean enabled
void(* FreeCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:58
#define SDL_assert(condition)
Definition: SDL_assert.h:167
#define NULL
Definition: begin_code.h:143
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
void WINRT_QuitMouse(_THIS)
SDL_bool WINRT_UsingRelativeMouseMode
GLenum GLint ref
SDL_Cursor *(* CreateSystemCursor)(SDL_SystemCursor id)
Definition: SDL_mouse_c.h:49
void * driverdata
Definition: SDL_mouse_c.h:33