SDL  2.0
SDL_mirmouse.c
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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 
22 /*
23  Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com>
24 */
25 
26 #include "../../SDL_internal.h"
27 
28 #if SDL_VIDEO_DRIVER_MIR
29 
30 #include "../../events/SDL_mouse_c.h"
31 #include "../SDL_sysvideo.h"
32 #include "SDL_assert.h"
33 
34 #include "SDL_mirdyn.h"
35 
36 #include "SDL_mirvideo.h"
37 #include "SDL_mirmouse.h"
38 #include "SDL_mirwindow.h"
39 
40 typedef struct
41 {
42  MirCursorConfiguration* conf;
43  MirBufferStream* stream;
44 } MIR_Cursor;
45 
46 static SDL_Cursor*
47 MIR_CreateDefaultCursor()
48 {
50 
51  cursor = SDL_calloc(1, sizeof(SDL_Cursor));
52  if (cursor) {
53 
54  MIR_Cursor* mir_cursor = SDL_calloc(1, sizeof(MIR_Cursor));
55  if (mir_cursor) {
56  mir_cursor->conf = NULL;
57  mir_cursor->stream = NULL;
58  cursor->driverdata = mir_cursor;
59  }
60  else {
62  SDL_free(cursor);
63  cursor = NULL;
64  }
65  }
66  else {
68  }
69 
70  return cursor;
71 }
72 
73 static void
74 CopySurfacePixelsToMirStream(SDL_Surface* surface, MirBufferStream* stream)
75 {
76  char* dest, *pixels;
77  int i, s_w, s_h, r_stride, p_stride, bytes_per_pixel, bytes_per_row;
78 
79  MirGraphicsRegion region;
80  MIR_mir_buffer_stream_get_graphics_region(stream, &region);
81 
82  s_w = surface->w;
83  s_h = surface->h;
84 
85  bytes_per_pixel = surface->format->BytesPerPixel;
86  bytes_per_row = bytes_per_pixel * s_w;
87 
88  dest = region.vaddr;
89  pixels = (char*)surface->pixels;
90 
91  r_stride = region.stride;
92  p_stride = surface->pitch;
93 
94  for (i = 0; i < s_h; i++)
95  {
96  SDL_memcpy(dest, pixels, bytes_per_row);
97  dest += r_stride;
98  pixels += p_stride;
99  }
100 }
101 
102 static SDL_Cursor*
103 MIR_CreateCursor(SDL_Surface* surface, int hot_x, int hot_y)
104 {
105  MirCursorConfiguration* conf;
106  MirBufferStream* stream;
107 
108  int s_w = surface->w;
109  int s_h = surface->h;
110 
112  SDL_Cursor* cursor = MIR_CreateDefaultCursor();
113  MIR_Cursor* mir_cursor;
114 
115  if (!cursor) {
116  return NULL;
117  }
118 
119  mir_cursor = (MIR_Cursor*)cursor->driverdata;
120 
121  stream = MIR_mir_connection_create_buffer_stream_sync(mir_data->connection,
122  s_w, s_h, mir_data->pixel_format,
123  mir_buffer_usage_software);
124 
125  conf = MIR_mir_cursor_configuration_from_buffer_stream(stream, hot_x, hot_y);
126 
127  CopySurfacePixelsToMirStream(surface, stream);
128  MIR_mir_buffer_stream_swap_buffers_sync(stream);
129 
130  mir_cursor->conf = conf;
131  mir_cursor->stream = stream;
132 
133  return cursor;
134 }
135 
136 static SDL_Cursor*
137 MIR_CreateSystemCursor(SDL_SystemCursor id)
138 {
139  char const* cursor_name = NULL;
140  SDL_Cursor* cursor = MIR_CreateDefaultCursor();
141  MIR_Cursor* mir_cursor = (MIR_Cursor*)cursor->driverdata;
142 
143  if (!cursor) {
144  return NULL;
145  }
146 
147  switch(id) {
149  cursor_name = MIR_mir_arrow_cursor_name;
150  break;
152  cursor_name = MIR_mir_caret_cursor_name;
153  break;
155  cursor_name = MIR_mir_busy_cursor_name;
156  break;
158  /* Unsupported */
159  cursor_name = MIR_mir_arrow_cursor_name;
160  break;
162  cursor_name = MIR_mir_busy_cursor_name;
163  break;
165  cursor_name = MIR_mir_omnidirectional_resize_cursor_name;
166  break;
168  cursor_name = MIR_mir_omnidirectional_resize_cursor_name;
169  break;
171  cursor_name = MIR_mir_horizontal_resize_cursor_name;
172  break;
174  cursor_name = MIR_mir_vertical_resize_cursor_name;
175  break;
177  cursor_name = MIR_mir_omnidirectional_resize_cursor_name;
178  break;
180  /* Unsupported */
181  cursor_name = MIR_mir_closed_hand_cursor_name;
182  break;
184  cursor_name = MIR_mir_open_hand_cursor_name;
185  break;
186  default:
187  SDL_assert(0);
188  return NULL;
189  }
190 
191  mir_cursor->conf = MIR_mir_cursor_configuration_from_name(cursor_name);
192 
193  return cursor;
194 }
195 
196 static void
197 MIR_FreeCursor(SDL_Cursor* cursor)
198 {
199  if (cursor) {
200 
201  if (cursor->driverdata) {
202  MIR_Cursor* mir_cursor = (MIR_Cursor*)cursor->driverdata;
203 
204  if (mir_cursor->conf)
205  MIR_mir_cursor_configuration_destroy(mir_cursor->conf);
206  if (mir_cursor->stream)
207  MIR_mir_buffer_stream_release_sync(mir_cursor->stream);
208 
209  SDL_free(mir_cursor);
210  }
211 
212  SDL_free(cursor);
213  }
214 }
215 
216 static int
217 MIR_ShowCursor(SDL_Cursor* cursor)
218 {
220  MIR_Window* mir_window = mir_data->current_window;
221 
222  if (cursor && cursor->driverdata) {
223  if (mir_window && MIR_mir_surface_is_valid(mir_window->surface)) {
224  MIR_Cursor* mir_cursor = (MIR_Cursor*)cursor->driverdata;
225 
226  if (mir_cursor->conf) {
227  MIR_mir_surface_configure_cursor(mir_window->surface, mir_cursor->conf);
228  }
229  }
230  }
231  else if(mir_window && MIR_mir_surface_is_valid(mir_window->surface)) {
232  MIR_mir_surface_configure_cursor(mir_window->surface, NULL);
233  }
234 
235  return 0;
236 }
237 
238 static void
239 MIR_WarpMouse(SDL_Window* window, int x, int y)
240 {
241  SDL_Unsupported();
242 }
243 
244 static int
245 MIR_WarpMouseGlobal(int x, int y)
246 {
247  return SDL_Unsupported();
248 }
249 
250 static int
251 MIR_SetRelativeMouseMode(SDL_bool enabled)
252 {
253  return 0;
254 }
255 
256 /* TODO Actually implement the cursor, need to wait for mir support */
257 void
259 {
260  SDL_Mouse* mouse = SDL_GetMouse();
261 
262  mouse->CreateCursor = MIR_CreateCursor;
263  mouse->ShowCursor = MIR_ShowCursor;
264  mouse->FreeCursor = MIR_FreeCursor;
265  mouse->WarpMouse = MIR_WarpMouse;
266  mouse->WarpMouseGlobal = MIR_WarpMouseGlobal;
267  mouse->CreateSystemCursor = MIR_CreateSystemCursor;
268  mouse->SetRelativeMouseMode = MIR_SetRelativeMouseMode;
269 
270  SDL_SetDefaultCursor(MIR_CreateDefaultCursor());
271 }
272 
273 void
275 {
276  SDL_Mouse* mouse = SDL_GetMouse();
277 
278  MIR_FreeCursor(mouse->def_cursor);
279  mouse->def_cursor = NULL;
280 
281  mouse->CreateCursor = NULL;
282  mouse->ShowCursor = NULL;
283  mouse->FreeCursor = NULL;
284  mouse->WarpMouse = NULL;
285  mouse->CreateSystemCursor = NULL;
286  mouse->SetRelativeMouseMode = NULL;
287 }
288 
289 #endif /* SDL_VIDEO_DRIVER_MIR */
290 
291 /* vi: set ts=4 sw=4 expandtab: */
292 
SDL_Mouse * SDL_GetMouse(void)
Definition: SDL_mouse.c:66
int(* ShowCursor)(SDL_Cursor *cursor)
Definition: SDL_mouse_c.h:52
GLuint GLuint stream
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
Uint8 BytesPerPixel
Definition: SDL_pixels.h:318
int(* SetRelativeMouseMode)(SDL_bool enabled)
Definition: SDL_mouse_c.h:67
static SDL_Window * window
MirPixelFormat pixel_format
Definition: SDL_mirvideo.h:40
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
void MIR_FiniMouse()
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1565
MirConnection * connection
Definition: SDL_mirvideo.h:36
SDL_Cursor *(* CreateCursor)(SDL_Surface *surface, int hot_x, int hot_y)
Definition: SDL_mouse_c.h:46
#define SDL_memcpy
void * SDL_calloc(size_t nmemb, size_t size)
MIR_Window * current_window
Definition: SDL_mirvideo.h:38
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
void * pixels
Definition: SDL_surface.h:75
void SDL_free(void *mem)
SDL_SystemCursor
Cursor types for SDL_CreateSystemCursor().
Definition: SDL_mouse.h:46
void SDL_SetDefaultCursor(SDL_Cursor *cursor)
Definition: SDL_mouse.c:55
int(* WarpMouseGlobal)(int x, int y)
Definition: SDL_mouse_c.h:64
GLenum GLenum GLsizei const GLuint GLboolean enabled
SDL_Cursor * cursor
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
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
SDL_bool
Definition: SDL_stdinc.h:130
SDL_PixelFormat * format
Definition: SDL_surface.h:72
The type used to identify a window.
Definition: SDL_sysvideo.h:71
void(* WarpMouse)(SDL_Window *window, int x, int y)
Definition: SDL_mouse_c.h:61
SDL_VideoDevice * SDL_GetVideoDevice(void)
Definition: SDL_video.c:571
MirSurface * surface
Definition: SDL_mirwindow.h:38
SDL_Cursor *(* CreateSystemCursor)(SDL_SystemCursor id)
Definition: SDL_mouse_c.h:49
void * driverdata
Definition: SDL_mouse_c.h:33
#define SDL_Unsupported()
Definition: SDL_error.h:53
void MIR_InitMouse()
SDL_Cursor * def_cursor
Definition: SDL_mouse_c.h:92