| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Library General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Library General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Library General Public |
| 16 | License along with this library; if not, write to the Free |
| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | /* |
| 25 | File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability |
| 26 | 27 March 2003 |
| 27 | |
| 28 | Implements Pumping of events and WIMP polling |
| 29 | */ |
| 30 | |
| 31 | #include "SDL.h" |
| 32 | #include "SDL_syswm.h" |
| 33 | #include "../../events/SDL_sysevents.h" |
| 34 | #include "../../events/SDL_events_c.h" |
| 35 | #include "SDL_riscosvideo.h" |
| 36 | #include "SDL_riscosevents_c.h" |
| 37 | #include "SDL_riscosmouse_c.h" |
| 38 | #include "../../timer/SDL_timer_c.h" |
| 39 | |
| 40 | #include "memory.h" |
| 41 | #include "stdlib.h" |
| 42 | #include "ctype.h" |
| 43 | |
| 44 | #include "kernel.h" |
| 45 | #include "swis.h" |
| 46 | #include "unixlib/os.h" |
| 47 | |
| 48 | #if !SDL_THREADS_DISABLED |
| 49 | #include <pthread.h> |
| 50 | #endif |
| 51 | |
| 52 | /* Local functions */ |
| 53 | void WIMP_Poll(_THIS, int waitTime); |
| 54 | void WIMP_SetFocus(int win); |
| 55 | |
| 56 | /* SDL_riscossprite functions */ |
| 57 | void WIMP_PlotSprite(_THIS, int x, int y); |
| 58 | void WIMP_ModeChanged(_THIS); |
| 59 | void WIMP_PaletteChanged(_THIS); |
| 60 | |
| 61 | |
| 62 | extern void WIMP_PollMouse(_THIS); |
| 63 | extern void RISCOS_PollKeyboard(); |
| 64 | |
| 65 | #if SDL_THREADS_DISABLED |
| 66 | /* Timer running function */ |
| 67 | extern void RISCOS_CheckTimer(); |
| 68 | #else |
| 69 | extern int riscos_using_threads; |
| 70 | #endif |
| 71 | |
| 72 | /* Mouse cursor handling */ |
| 73 | extern void WIMP_ReshowCursor(_THIS); |
| 74 | extern void WIMP_RestoreWimpCursor(); |
| 75 | |
| 76 | int hasFocus = 0; |
| 77 | int mouseInWindow = 0; |
| 78 | |
| 79 | /* Flag to ensure window is correct size after a mode change */ |
| 80 | static int resizeOnOpen = 0; |
| 81 | |
| 82 | void WIMP_PumpEvents(_THIS) |
| 83 | { |
| 84 | WIMP_Poll(this, 0); |
| 85 | if (hasFocus) RISCOS_PollKeyboard(); |
| 86 | if (mouseInWindow) WIMP_PollMouse(this); |
| 87 | #if SDL_THREADS_DISABLED |
| 88 | if (SDL_timer_running) RISCOS_CheckTimer(); |
| 89 | #endif |
| 90 | } |
| 91 | |
| 92 | |
| 93 | void WIMP_Poll(_THIS, int waitTime) |
| 94 | { |
| 95 | _kernel_swi_regs regs; |
| 96 | int message[64]; |
| 97 | unsigned int code; |
| 98 | int pollMask = 0; |
| 99 | int doPoll = 1; |
| 100 | int sysEvent; |
| 101 | int sdlWindow = this->hidden->window_handle; |
| 102 | |
| 103 | if (this->PumpEvents != WIMP_PumpEvents) return; |
| 104 | |
| 105 | if (waitTime > 0) |
| 106 | { |
| 107 | _kernel_swi(OS_ReadMonotonicTime, ®s, ®s); |
| 108 | waitTime += regs.r[0]; |
| 109 | } |
| 110 | |
| 111 | while (doPoll) |
| 112 | { |
| 113 | #if !SDL_THREADS_DISABLED |
| 114 | /* Stop thread callbacks while program is paged out */ |
| 115 | if (riscos_using_threads) __pthread_stop_ticker(); |
| 116 | #endif |
| 117 | |
| 118 | if (waitTime <= 0) |
| 119 | { |
| 120 | regs.r[0] = pollMask; /* Poll Mask */ |
| 121 | /* For no wait time mask out null event so we wait until something happens */ |
| 122 | if (waitTime < 0) regs.r[0] |= 1; |
| 123 | regs.r[1] = (int)message; |
| 124 | _kernel_swi(Wimp_Poll, ®s, ®s); |
| 125 | } else |
| 126 | { |
| 127 | regs.r[0] = pollMask; |
| 128 | regs.r[1] = (int)message; |
| 129 | regs.r[2] = waitTime; |
| 130 | _kernel_swi(Wimp_PollIdle, ®s, ®s); |
| 131 | } |
| 132 | |
| 133 | /* Flag to specify if we post a SDL_SysWMEvent */ |
| 134 | sysEvent = 0; |
| 135 | |
| 136 | code = (unsigned int)regs.r[0]; |
| 137 | |
| 138 | switch(code) |
| 139 | { |
| 140 | case 0: /* Null Event - drop out for standard processing*/ |
| 141 | doPoll = 0; |
| 142 | break; |
| 143 | |
| 144 | case 1: /* Redraw window */ |
| 145 | _kernel_swi(Wimp_RedrawWindow, ®s,®s); |
| 146 | if (message[0] == sdlWindow) |
| 147 | { |
| 148 | while (regs.r[0]) |
| 149 | { |
| 150 | WIMP_PlotSprite(this, message[1], message[2]); |
| 151 | _kernel_swi(Wimp_GetRectangle, ®s, ®s); |
| 152 | } |
| 153 | } else |
| 154 | { |
| 155 | /* TODO: Currently we just eat them - we may need to pass them on */ |
| 156 | while (regs.r[0]) |
| 157 | { |
| 158 | _kernel_swi(Wimp_GetRectangle, ®s, ®s); |
| 159 | } |
| 160 | } |
| 161 | break; |
| 162 | |
| 163 | case 2: /* Open window */ |
| 164 | if ( resizeOnOpen && message[0] == sdlWindow) |
| 165 | { |
| 166 | /* Ensure window is correct size */ |
| 167 | resizeOnOpen = 0; |
| 168 | message[3] = message[1] + (this->screen->w << this->hidden->xeig); |
| 169 | message[4] = message[2] + (this->screen->h << this->hidden->yeig); |
| 170 | } |
| 171 | _kernel_swi(Wimp_OpenWindow, ®s, ®s); |
| 172 | break; |
| 173 | |
| 174 | case 3: /* Close window */ |
| 175 | if (message[0] == sdlWindow) |
| 176 | { |
| 177 | /* Documentation makes it looks as if the following line is correct: |
| 178 | ** if (SDL_PrivateQuit() == 1) _kernel_swi(Wimp_CloseWindow, ®s, ®s); |
| 179 | ** However some programs don't process this message and so sit there invisibly |
| 180 | ** in the background so I just post the quit message and hope the application |
| 181 | ** does the correct thing. |
| 182 | */ |
| 183 | SDL_PrivateQuit(); |
| 184 | } else |
| 185 | sysEvent = 1; |
| 186 | doPoll = 0; |
| 187 | break; |
| 188 | |
| 189 | case 4: /* Pointer_Leaving_Window */ |
| 190 | if (message[0] == sdlWindow) |
| 191 | { |
| 192 | mouseInWindow = 0; |
| 193 | //TODO: Lose buttons / dragging |
| 194 | /* Reset to default pointer */ |
| 195 | WIMP_RestoreWimpCursor(); |
| 196 | SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); |
| 197 | } else |
| 198 | sysEvent = 1; |
| 199 | break; |
| 200 | |
| 201 | case 5: /* Pointer_Entering_Window */ |
| 202 | if (message[0] == sdlWindow) |
| 203 | { |
| 204 | mouseInWindow = 1; |
| 205 | WIMP_ReshowCursor(this); |
| 206 | SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); |
| 207 | } else sysEvent = 1; |
| 208 | break; |
| 209 | |
| 210 | case 6: /* Mouse_Click */ |
| 211 | if (hasFocus == 0) |
| 212 | { |
| 213 | /* First click gives focus if it's not a menu */ |
| 214 | /* we only count non-menu clicks on a window that has the focus */ |
| 215 | WIMP_SetFocus(message[3]); |
| 216 | } else |
| 217 | doPoll = 0; // So PollMouse gets a chance to pick it up |
| 218 | break; |
| 219 | |
| 220 | case 7: /* User_Drag_Box - Used for mouse release */ |
| 221 | //TODO: May need to implement this in the future |
| 222 | sysEvent = 1; |
| 223 | break; |
| 224 | |
| 225 | case 8: /* Keypressed */ |
| 226 | doPoll = 0; /* PollKeyboard should pick it up */ |
| 227 | if (message[0] != sdlWindow) sysEvent = 1; |
| 228 | /*TODO: May want to always pass F12 etc to the wimp |
| 229 | { |
| 230 | regs.r[0] = message[6]; |
| 231 | _kernel_swi(Wimp_ProcessKey, ®s, ®s); |
| 232 | } |
| 233 | */ |
| 234 | break; |
| 235 | |
| 236 | case 11: /* Lose Caret */ |
| 237 | hasFocus = 0; |
| 238 | if (message[0] == sdlWindow) SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS); |
| 239 | else sysEvent = 1; |
| 240 | break; |
| 241 | |
| 242 | case 12: /* Gain Caret */ |
| 243 | hasFocus = 1; |
| 244 | if (message[0] == sdlWindow) SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS); |
| 245 | else sysEvent = 1; |
| 246 | break; |
| 247 | |
| 248 | case 17: |
| 249 | case 18: |
| 250 | sysEvent = 1; /* All messages are passed on */ |
| 251 | |
| 252 | switch(message[4]) |
| 253 | { |
| 254 | case 0: /* Quit Event */ |
| 255 | /* No choice - have to quit */ |
| 256 | SDL_Quit(); |
| 257 | exit(0); |
| 258 | break; |
| 259 | |
| 260 | case 8: /* Pre Quit */ |
| 261 | SDL_PrivateQuit(); |
| 262 | break; |
| 263 | |
| 264 | case 0x400c1: /* Mode change */ |
| 265 | WIMP_ModeChanged(this); |
| 266 | resizeOnOpen = 1; |
| 267 | break; |
| 268 | |
| 269 | case 9: /* Palette changed */ |
| 270 | WIMP_PaletteChanged(this); |
| 271 | break; |
| 272 | } |
| 273 | break; |
| 274 | |
| 275 | default: |
| 276 | /* Pass unknown events on */ |
| 277 | sysEvent = 1; |
| 278 | break; |
| 279 | } |
| 280 | |
| 281 | if (sysEvent) |
| 282 | { |
| 283 | SDL_SysWMmsg wmmsg; |
| 284 | |
| 285 | SDL_VERSION(&wmmsg.version); |
| 286 | wmmsg.eventCode = code; |
| 287 | SDL_memcpy(wmmsg.pollBlock, message, 64 * sizeof(int)); |
| 288 | |
| 289 | /* Fall out of polling loop if message is successfully posted */ |
| 290 | if (SDL_PrivateSysWMEvent(&wmmsg)) doPoll = 0; |
| 291 | } |
| 292 | #if !SDL_THREADS_DISABLED |
| 293 | if (riscos_using_threads) |
| 294 | { |
| 295 | /* Restart ticker here so other thread can not interfere |
| 296 | with the Redraw processing */ |
| 297 | if (riscos_using_threads) __pthread_start_ticker(); |
| 298 | /* Give other threads a better chance of running */ |
| 299 | pthread_yield(); |
| 300 | } |
| 301 | #endif |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | /* Set focus to specified window */ |
| 306 | void WIMP_SetFocus(int win) |
| 307 | { |
| 308 | _kernel_swi_regs regs; |
| 309 | |
| 310 | regs.r[0] = win; |
| 311 | regs.r[1] = -1; /* Icon handle */ |
| 312 | regs.r[2] = 0; /* X-offset we just put it at position 0 */ |
| 313 | regs.r[3] = 0; /* Y-offset as above */ |
| 314 | regs.r[4] = 1 << 25; /* Caret is invisible */ |
| 315 | regs.r[5] = 0; /* index into string */ |
| 316 | |
| 317 | _kernel_swi(Wimp_SetCaretPosition, ®s, ®s); |
| 318 | } |
| 319 | |
| 320 | /** Run background task while in a sleep command */ |
| 321 | void RISCOS_BackgroundTasks(void) |
| 322 | { |
| 323 | if (current_video && current_video->hidden->window_handle) |
| 324 | { |
| 325 | WIMP_Poll(current_video, 0); |
| 326 | } |
| 327 | #if SDL_THREADS_DISABLED |
| 328 | if (SDL_timer_running) RISCOS_CheckTimer(); |
| 329 | #endif |
| 330 | } |