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annotate src/video/riscos/SDL_wimppoll.c @ 1698:412149a1c756 SDL-1.3

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Renamed, per Mike's comment on bug #157
author Sam Lantinga <slouken@libsdl.org>
date Wed, 21 Jun 2006 08:25:17 +0000
parents 4da1ee79c9af
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability
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26 27 March 2003
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27
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28 Implements Pumping of events and WIMP polling
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29 */
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30
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31 #include "SDL.h"
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32 #include "SDL_syswm.h"
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33 #include "../../events/SDL_sysevents.h"
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34 #include "../../events/SDL_events_c.h"
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35 #include "SDL_riscosvideo.h"
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36 #include "SDL_riscosevents_c.h"
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37 #include "SDL_riscosmouse_c.h"
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38 #include "../../timer/SDL_timer_c.h"
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39
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40 #include "memory.h"
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41 #include "stdlib.h"
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42 #include "ctype.h"
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43
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44 #include "kernel.h"
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45 #include "swis.h"
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46 #include "unixlib/os.h"
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47
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48 #if !SDL_THREADS_DISABLED
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49 #include <pthread.h>
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50 #endif
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51
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52 /* Local functions */
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53 void WIMP_Poll(_THIS, int waitTime);
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54 void WIMP_SetFocus(int win);
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55
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56 /* SDL_riscossprite functions */
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57 void WIMP_PlotSprite(_THIS, int x, int y);
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58 void WIMP_ModeChanged(_THIS);
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59 void WIMP_PaletteChanged(_THIS);
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60
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61
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62 extern void WIMP_PollMouse(_THIS);
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63 extern void RISCOS_PollKeyboard();
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64
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65 #if SDL_THREADS_DISABLED
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66 /* Timer running function */
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67 extern void RISCOS_CheckTimer();
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68 #else
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69 extern int riscos_using_threads;
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70 #endif
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71
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72 /* Mouse cursor handling */
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73 extern void WIMP_ReshowCursor(_THIS);
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74 extern void WIMP_RestoreWimpCursor();
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75
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76 int hasFocus = 0;
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77 int mouseInWindow = 0;
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78
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79 /* Flag to ensure window is correct size after a mode change */
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80 static int resizeOnOpen = 0;
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81
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82 void
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83 WIMP_PumpEvents(_THIS)
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84 {
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85 WIMP_Poll(this, 0);
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86 if (hasFocus)
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87 RISCOS_PollKeyboard();
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88 if (mouseInWindow)
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89 WIMP_PollMouse(this);
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90 #if SDL_THREADS_DISABLED
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91 if (SDL_timer_running)
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92 RISCOS_CheckTimer();
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93 #endif
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94 }
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96
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97 void
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98 WIMP_Poll(_THIS, int waitTime)
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99 {
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100 _kernel_swi_regs regs;
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101 int message[64];
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102 unsigned int code;
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103 int pollMask = 0;
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104 int doPoll = 1;
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105 int sysEvent;
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106 int sdlWindow = this->hidden->window_handle;
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107
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108 if (this->PumpEvents != WIMP_PumpEvents)
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109 return;
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110
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111 if (waitTime > 0) {
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112 _kernel_swi(OS_ReadMonotonicTime, &regs, &regs);
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113 waitTime += regs.r[0];
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114 }
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115
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116 while (doPoll) {
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117 #if !SDL_THREADS_DISABLED
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118 /* Stop thread callbacks while program is paged out */
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119 if (riscos_using_threads)
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120 __pthread_stop_ticker();
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121 #endif
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122
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123 if (waitTime <= 0) {
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124 regs.r[0] = pollMask; /* Poll Mask */
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125 /* For no wait time mask out null event so we wait until something happens */
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126 if (waitTime < 0)
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127 regs.r[0] |= 1;
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128 regs.r[1] = (int) message;
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129 _kernel_swi(Wimp_Poll, &regs, &regs);
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130 } else {
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131 regs.r[0] = pollMask;
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132 regs.r[1] = (int) message;
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133 regs.r[2] = waitTime;
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134 _kernel_swi(Wimp_PollIdle, &regs, &regs);
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135 }
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136
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137 /* Flag to specify if we post a SDL_SysWMEvent */
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138 sysEvent = 0;
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139
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140 code = (unsigned int) regs.r[0];
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141
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142 switch (code) {
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143 case 0: /* Null Event - drop out for standard processing */
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144 doPoll = 0;
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145 break;
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147 case 1: /* Redraw window */
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148 _kernel_swi(Wimp_RedrawWindow, &regs, &regs);
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149 if (message[0] == sdlWindow) {
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150 while (regs.r[0]) {
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151 WIMP_PlotSprite(this, message[1], message[2]);
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152 _kernel_swi(Wimp_GetRectangle, &regs, &regs);
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153 }
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154 } else {
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155 /* TODO: Currently we just eat them - we may need to pass them on */
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156 while (regs.r[0]) {
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157 _kernel_swi(Wimp_GetRectangle, &regs, &regs);
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158 }
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159 }
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160 break;
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161
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162 case 2: /* Open window */
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163 if (resizeOnOpen && message[0] == sdlWindow) {
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164 /* Ensure window is correct size */
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165 resizeOnOpen = 0;
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166 message[3] =
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167 message[1] + (this->screen->w << this->hidden->xeig);
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168 message[4] =
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169 message[2] + (this->screen->h << this->hidden->yeig);
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170 }
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171 _kernel_swi(Wimp_OpenWindow, &regs, &regs);
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172 break;
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173
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174 case 3: /* Close window */
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175 if (message[0] == sdlWindow) {
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176 /* Documentation makes it looks as if the following line is correct:
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177 ** if (SDL_PrivateQuit() == 1) _kernel_swi(Wimp_CloseWindow, &regs, &regs);
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178 ** However some programs don't process this message and so sit there invisibly
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179 ** in the background so I just post the quit message and hope the application
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180 ** does the correct thing.
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181 */
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182 SDL_PrivateQuit();
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183 } else
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184 sysEvent = 1;
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185 doPoll = 0;
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186 break;
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187
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188 case 4: /* Pointer_Leaving_Window */
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189 if (message[0] == sdlWindow) {
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190 mouseInWindow = 0;
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191 //TODO: Lose buttons / dragging
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192 /* Reset to default pointer */
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193 WIMP_RestoreWimpCursor();
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194 SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
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195 } else
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196 sysEvent = 1;
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197 break;
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198
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199 case 5: /* Pointer_Entering_Window */
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200 if (message[0] == sdlWindow) {
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201 mouseInWindow = 1;
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202 WIMP_ReshowCursor(this);
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203 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
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204 } else
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205 sysEvent = 1;
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206 break;
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207
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208 case 6: /* Mouse_Click */
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209 if (hasFocus == 0) {
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210 /* First click gives focus if it's not a menu */
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211 /* we only count non-menu clicks on a window that has the focus */
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212 WIMP_SetFocus(message[3]);
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213 } else
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214 doPoll = 0; // So PollMouse gets a chance to pick it up
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215 break;
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216
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217 case 7: /* User_Drag_Box - Used for mouse release */
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218 //TODO: May need to implement this in the future
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219 sysEvent = 1;
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220 break;
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221
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222 case 8: /* Keypressed */
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223 doPoll = 0; /* PollKeyboard should pick it up */
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224 if (message[0] != sdlWindow)
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225 sysEvent = 1;
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226 /*TODO: May want to always pass F12 etc to the wimp
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227 {
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228 regs.r[0] = message[6];
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229 _kernel_swi(Wimp_ProcessKey, &regs, &regs);
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230 }
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231 */
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232 break;
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233
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234 case 11: /* Lose Caret */
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235 hasFocus = 0;
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236 if (message[0] == sdlWindow)
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237 SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS);
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238 else
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239 sysEvent = 1;
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240 break;
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241
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242 case 12: /* Gain Caret */
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243 hasFocus = 1;
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244 if (message[0] == sdlWindow)
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245 SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
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246 else
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247 sysEvent = 1;
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248 break;
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249
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250 case 17:
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251 case 18:
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252 sysEvent = 1; /* All messages are passed on */
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253
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254 switch (message[4]) {
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255 case 0: /* Quit Event */
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256 /* No choice - have to quit */
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257 SDL_Quit();
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258 exit(0);
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259 break;
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260
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261 case 8: /* Pre Quit */
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262 SDL_PrivateQuit();
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263 break;
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264
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265 case 0x400c1: /* Mode change */
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266 WIMP_ModeChanged(this);
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267 resizeOnOpen = 1;
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268 break;
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269
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270 case 9: /* Palette changed */
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271 WIMP_PaletteChanged(this);
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272 break;
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273 }
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274 break;
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275
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276 default:
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277 /* Pass unknown events on */
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278 sysEvent = 1;
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279 break;
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280 }
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281
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282 if (sysEvent) {
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283 SDL_SysWMmsg wmmsg;
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284
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285 SDL_VERSION(&wmmsg.version);
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286 wmmsg.eventCode = code;
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287 SDL_memcpy(wmmsg.pollBlock, message, 64 * sizeof(int));
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288
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289 /* Fall out of polling loop if message is successfully posted */
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290 if (SDL_PrivateSysWMEvent(&wmmsg))
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291 doPoll = 0;
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292 }
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293 #if !SDL_THREADS_DISABLED
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294 if (riscos_using_threads) {
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295 /* Restart ticker here so other thread can not interfere
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296 with the Redraw processing */
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297 if (riscos_using_threads)
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298 __pthread_start_ticker();
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299 /* Give other threads a better chance of running */
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300 pthread_yield();
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301 }
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302 #endif
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303 }
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304 }
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305
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306 /* Set focus to specified window */
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307 void
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308 WIMP_SetFocus(int win)
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309 {
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310 _kernel_swi_regs regs;
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311
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312 regs.r[0] = win;
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313 regs.r[1] = -1; /* Icon handle */
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314 regs.r[2] = 0; /* X-offset we just put it at position 0 */
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315 regs.r[3] = 0; /* Y-offset as above */
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316 regs.r[4] = 1 << 25; /* Caret is invisible */
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317 regs.r[5] = 0; /* index into string */
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318
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319 _kernel_swi(Wimp_SetCaretPosition, &regs, &regs);
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320 }
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321
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322 /** Run background task while in a sleep command */
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323 void
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324 RISCOS_BackgroundTasks(void)
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325 {
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326 if (current_video && current_video->hidden->window_handle) {
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327 WIMP_Poll(current_video, 0);
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328 }
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329 #if SDL_THREADS_DISABLED
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330 if (SDL_timer_running)
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331 RISCOS_CheckTimer();
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332 #endif
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333 }
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334
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335 /* vi: set ts=4 sw=4 expandtab: */