SDL  2.0
SDL_mirevents.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_events_c.h"
31 #include "../../events/SDL_keyboard_c.h"
32 #include "../../events/SDL_touch_c.h"
33 #include "../../events/scancodes_xfree86.h"
34 
35 #include "SDL_mirevents.h"
36 #include "SDL_mirwindow.h"
37 
38 #include <xkbcommon/xkbcommon.h>
39 
40 #include "SDL_mirdyn.h"
41 
42 static void
43 HandleKeyText(int32_t key_code)
44 {
45  char text[8];
46  int size = 0;
47 
48  size = MIR_xkb_keysym_to_utf8(key_code, text, sizeof text);
49 
50  if (size > 0) {
51  text[size] = '\0';
53  }
54 }
55 
56 static void
57 CheckKeyboardFocus(SDL_Window* sdl_window)
58 {
59  SDL_Window* keyboard_window = SDL_GetKeyboardFocus();
60 
61  if (keyboard_window != sdl_window)
62  SDL_SetKeyboardFocus(sdl_window);
63 }
64 
65 
66 /* FIXME
67  Mir still needs to implement its IM API, for now we assume
68  a single key press produces a character.
69 */
70 static void
71 HandleKeyEvent(MirKeyEvent const ev, SDL_Window* window)
72 {
73  uint32_t scancode = SDL_SCANCODE_UNKNOWN;
74  Uint8 key_state = ev.action == mir_key_action_up ? SDL_RELEASED : SDL_PRESSED;
75 
76  CheckKeyboardFocus(window);
77 
78  if (ev.scan_code < SDL_arraysize(xfree86_scancode_table2))
79  scancode = xfree86_scancode_table2[ev.scan_code];
80 
81  if (scancode != SDL_SCANCODE_UNKNOWN)
82  SDL_SendKeyboardKey(key_state, scancode);
83 
84  if (key_state == SDL_PRESSED)
85  HandleKeyText(ev.key_code);
86 }
87 
88 static void
89 HandleMouseButton(SDL_Window* sdl_window, Uint8 state, MirMotionButton button_state)
90 {
91  static uint32_t last_sdl_button;
92  uint32_t sdl_button;
93 
94  switch (button_state) {
95  case mir_motion_button_primary:
96  sdl_button = SDL_BUTTON_LEFT;
97  break;
98  case mir_motion_button_secondary:
99  sdl_button = SDL_BUTTON_RIGHT;
100  break;
101  case mir_motion_button_tertiary:
102  sdl_button = SDL_BUTTON_MIDDLE;
103  break;
104  case mir_motion_button_forward:
105  sdl_button = SDL_BUTTON_X1;
106  break;
107  case mir_motion_button_back:
108  sdl_button = SDL_BUTTON_X2;
109  break;
110  default:
111  sdl_button = last_sdl_button;
112  break;
113  }
114 
115  last_sdl_button = sdl_button;
116  SDL_SendMouseButton(sdl_window, 0, state, sdl_button);
117 }
118 
119 static void
120 HandleMouseMotion(SDL_Window* sdl_window, int x, int y)
121 {
122  SDL_SendMouseMotion(sdl_window, 0, 0, x, y);
123 }
124 
125 static void
126 HandleTouchPress(int device_id, int source_id, SDL_bool down, float x, float y, float pressure)
127 {
128  SDL_SendTouch(device_id, source_id, down, x, y, pressure);
129 }
130 
131 static void
132 HandleTouchMotion(int device_id, int source_id, float x, float y, float pressure)
133 {
134  SDL_SendTouchMotion(device_id, source_id, x, y, pressure);
135 }
136 
137 static void
138 HandleMouseScroll(SDL_Window* sdl_window, int hscroll, int vscroll)
139 {
140  SDL_SendMouseWheel(sdl_window, 0, hscroll, vscroll, SDL_MOUSEWHEEL_NORMAL);
141 }
142 
143 static void
144 AddTouchDevice(int device_id)
145 {
146  if (SDL_AddTouch(device_id, "") < 0)
147  SDL_SetError("Error: can't add touch %s, %d", __FILE__, __LINE__);
148 }
149 
150 static void
151 HandleTouchEvent(MirMotionEvent const motion, int cord_index, SDL_Window* sdl_window)
152 {
153  int device_id = motion.device_id;
154  int id = motion.pointer_coordinates[cord_index].id;
155 
156  int width = sdl_window->w;
157  int height = sdl_window->h;
158  float x = motion.pointer_coordinates[cord_index].x;
159  float y = motion.pointer_coordinates[cord_index].y;
160 
161  float n_x = x / width;
162  float n_y = y / height;
163  float pressure = motion.pointer_coordinates[cord_index].pressure;
164 
165  AddTouchDevice(motion.device_id);
166 
167  switch (motion.action) {
168  case mir_motion_action_down:
169  case mir_motion_action_pointer_down:
170  HandleTouchPress(device_id, id, SDL_TRUE, n_x, n_y, pressure);
171  break;
172  case mir_motion_action_up:
173  case mir_motion_action_pointer_up:
174  HandleTouchPress(device_id, id, SDL_FALSE, n_x, n_y, pressure);
175  break;
176  case mir_motion_action_hover_move:
177  case mir_motion_action_move:
178  HandleTouchMotion(device_id, id, n_x, n_y, pressure);
179  break;
180  default:
181  break;
182  }
183 }
184 
185 static void
186 HandleMouseEvent(MirMotionEvent const motion, int cord_index, SDL_Window* sdl_window)
187 {
188  SDL_SetMouseFocus(sdl_window);
189 
190  switch (motion.action) {
191  case mir_motion_action_down:
192  case mir_motion_action_pointer_down:
193  HandleMouseButton(sdl_window, SDL_PRESSED, motion.button_state);
194  break;
195  case mir_motion_action_up:
196  case mir_motion_action_pointer_up:
197  HandleMouseButton(sdl_window, SDL_RELEASED, motion.button_state);
198  break;
199  case mir_motion_action_hover_move:
200  case mir_motion_action_move:
201  HandleMouseMotion(sdl_window,
202  motion.pointer_coordinates[cord_index].x,
203  motion.pointer_coordinates[cord_index].y);
204  break;
205  case mir_motion_action_outside:
207  break;
208  case mir_motion_action_scroll:
209  HandleMouseScroll(sdl_window,
210  motion.pointer_coordinates[cord_index].hscroll,
211  motion.pointer_coordinates[cord_index].vscroll);
212  break;
213  case mir_motion_action_cancel:
214  case mir_motion_action_hover_enter:
215  case mir_motion_action_hover_exit:
216  break;
217  default:
218  break;
219  }
220 }
221 
222 static void
223 HandleMotionEvent(MirMotionEvent const motion, SDL_Window* sdl_window)
224 {
225  int cord_index;
226  for (cord_index = 0; cord_index < motion.pointer_count; cord_index++) {
227  if (motion.pointer_coordinates[cord_index].tool_type == mir_motion_tool_type_finger) {
228  HandleTouchEvent(motion, cord_index, sdl_window);
229  }
230  else {
231  HandleMouseEvent(motion, cord_index, sdl_window);
232  }
233  }
234 }
235 
236 void
237 MIR_HandleInput(MirSurface* surface, MirEvent const* ev, void* context)
238 {
239  SDL_Window* window = (SDL_Window*)context;
240  switch (ev->type) {
241  case (mir_event_type_key):
242  HandleKeyEvent(ev->key, window);
243  break;
244  case (mir_event_type_motion):
245  HandleMotionEvent(ev->motion, window);
246  break;
247  default:
248  break;
249  }
250 }
251 
252 #endif /* SDL_VIDEO_DRIVER_MIR */
253 
254 /* vi: set ts=4 sw=4 expandtab: */
void SDL_SetKeyboardFocus(SDL_Window *window)
Definition: SDL_keyboard.c:612
GLint GLint GLsizei width
Definition: SDL_opengl.h:1565
signed int int32_t
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
SDL_Window * window
#define SDL_BUTTON_RIGHT
Definition: SDL_mouse.h:282
struct xkb_state * state
int SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid, SDL_bool down, float x, float y, float pressure)
Definition: SDL_touch.c:216
static const SDL_Scancode xfree86_scancode_table2[]
#define SDL_BUTTON_X1
Definition: SDL_mouse.h:283
void SDL_SetMouseFocus(SDL_Window *window)
Definition: SDL_mouse.c:103
#define SDL_GetKeyboardFocus
GLint GLint GLsizei GLsizei height
Definition: SDL_opengl.h:1565
GLsizeiptr size
int SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
Definition: SDL_keyboard.c:661
int SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid, float x, float y, float pressure)
Definition: SDL_touch.c:278
SDL_bool
Definition: SDL_stdinc.h:126
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
int SDL_SendMouseMotion(SDL_Window *window, SDL_MouseID mouseID, int relative, int x, int y)
Definition: SDL_mouse.c:188
#define SDL_BUTTON_LEFT
Definition: SDL_mouse.h:280
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:139
int SDL_SendKeyboardText(const char *text)
Definition: SDL_keyboard.c:774
#define SDL_BUTTON_MIDDLE
Definition: SDL_mouse.h:281
int SDL_AddTouch(SDL_TouchID touchID, const char *name)
Definition: SDL_touch.c:130
void MIR_HandleInput(MirSurface *surface, MirEvent const *ev, void *context)
#define NULL
Definition: begin_code.h:143
unsigned int uint32_t
#define SDL_SetError
static char text[MAX_TEXT_LENGTH]
Definition: testime.c:34
The type used to identify a window.
Definition: SDL_sysvideo.h:71
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:93
int SDL_SendMouseWheel(SDL_Window *window, SDL_MouseID mouseID, int x, int y, SDL_MouseWheelDirection direction)
Definition: SDL_mouse.c:406
#define SDL_PRESSED
Definition: SDL_events.h:50
#define SDL_BUTTON_X2
Definition: SDL_mouse.h:284
#define SDL_RELEASED
Definition: SDL_events.h:49
int SDL_SendMouseButton(SDL_Window *window, SDL_MouseID mouseID, Uint8 state, Uint8 button)
Definition: SDL_mouse.c:326