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annotate src/video/riscos/SDL_wimppoll.c @ 4396:f5d3f7fa071d SDL-1.2

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1.2 pulseaudio: make some function pointers static.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 17 Jan 2010 05:17:59 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 WIMP_PumpEvents(_THIS)
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83 {
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84 WIMP_Poll(this, 0);
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85 if (hasFocus) RISCOS_PollKeyboard();
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86 if (mouseInWindow) WIMP_PollMouse(this);
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87 #if SDL_THREADS_DISABLED
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88 if (SDL_timer_running) RISCOS_CheckTimer();
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89 #endif
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90 }
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91
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92
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93 void WIMP_Poll(_THIS, int waitTime)
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94 {
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95 _kernel_swi_regs regs;
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96 int message[64];
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97 unsigned int code;
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98 int pollMask = 0;
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99 int doPoll = 1;
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100 int sysEvent;
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101 int sdlWindow = this->hidden->window_handle;
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102
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103 if (this->PumpEvents != WIMP_PumpEvents) return;
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104
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105 if (waitTime > 0)
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106 {
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107 _kernel_swi(OS_ReadMonotonicTime, &regs, &regs);
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108 waitTime += regs.r[0];
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109 }
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110
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111 while (doPoll)
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112 {
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113 #if !SDL_THREADS_DISABLED
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114 /* Stop thread callbacks while program is paged out */
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115 if (riscos_using_threads) __pthread_stop_ticker();
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116 #endif
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117
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118 if (waitTime <= 0)
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119 {
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120 regs.r[0] = pollMask; /* Poll Mask */
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121 /* For no wait time mask out null event so we wait until something happens */
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122 if (waitTime < 0) regs.r[0] |= 1;
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123 regs.r[1] = (int)message;
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124 _kernel_swi(Wimp_Poll, &regs, &regs);
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125 } else
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126 {
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127 regs.r[0] = pollMask;
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128 regs.r[1] = (int)message;
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129 regs.r[2] = waitTime;
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130 _kernel_swi(Wimp_PollIdle, &regs, &regs);
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131 }
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132
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133 /* Flag to specify if we post a SDL_SysWMEvent */
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134 sysEvent = 0;
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135
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136 code = (unsigned int)regs.r[0];
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137
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138 switch(code)
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Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
139 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
140 case 0: /* Null Event - drop out for standard processing*/
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Sam Lantinga <slouken@libsdl.org>
parents: 769
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141 doPoll = 0;
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Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
142 break;
630
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parents:
diff changeset
143
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
144 case 1: /* Redraw window */
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
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145 _kernel_swi(Wimp_RedrawWindow, &regs,&regs);
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
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146 if (message[0] == sdlWindow)
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Sam Lantinga <slouken@libsdl.org>
parents: 769
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147 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
148 while (regs.r[0])
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
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149 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
150 WIMP_PlotSprite(this, message[1], message[2]);
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
151 _kernel_swi(Wimp_GetRectangle, &regs, &regs);
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
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152 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
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153 } else
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Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
154 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
155 /* TODO: Currently we just eat them - we may need to pass them on */
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
156 while (regs.r[0])
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
157 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
158 _kernel_swi(Wimp_GetRectangle, &regs, &regs);
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
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159 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
160 }
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Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
161 break;
630
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
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162
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Sam Lantinga <slouken@libsdl.org>
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163 case 2: /* Open window */
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Sam Lantinga <slouken@libsdl.org>
parents:
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164 if ( resizeOnOpen && message[0] == sdlWindow)
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Sam Lantinga <slouken@libsdl.org>
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165 {
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Sam Lantinga <slouken@libsdl.org>
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166 /* Ensure window is correct size */
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Sam Lantinga <slouken@libsdl.org>
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167 resizeOnOpen = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
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168 message[3] = message[1] + (this->screen->w << this->hidden->xeig);
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parents:
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169 message[4] = message[2] + (this->screen->h << this->hidden->yeig);
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parents:
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170 }
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Sam Lantinga <slouken@libsdl.org>
parents:
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171 _kernel_swi(Wimp_OpenWindow, &regs, &regs);
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parents:
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172 break;
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173
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Sam Lantinga <slouken@libsdl.org>
parents:
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174 case 3: /* Close window */
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Sam Lantinga <slouken@libsdl.org>
parents:
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175 if (message[0] == sdlWindow)
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Sam Lantinga <slouken@libsdl.org>
parents:
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176 {
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Sam Lantinga <slouken@libsdl.org>
parents:
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177 /* Documentation makes it looks as if the following line is correct:
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Sam Lantinga <slouken@libsdl.org>
parents:
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178 ** if (SDL_PrivateQuit() == 1) _kernel_swi(Wimp_CloseWindow, &regs, &regs);
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Sam Lantinga <slouken@libsdl.org>
parents:
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179 ** However some programs don't process this message and so sit there invisibly
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Sam Lantinga <slouken@libsdl.org>
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180 ** in the background so I just post the quit message and hope the application
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Sam Lantinga <slouken@libsdl.org>
parents:
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181 ** does the correct thing.
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Sam Lantinga <slouken@libsdl.org>
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182 */
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Sam Lantinga <slouken@libsdl.org>
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183 SDL_PrivateQuit();
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184 } else
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185 sysEvent = 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
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186 doPoll = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
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187 break;
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188
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Sam Lantinga <slouken@libsdl.org>
parents:
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189 case 4: /* Pointer_Leaving_Window */
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Sam Lantinga <slouken@libsdl.org>
parents:
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190 if (message[0] == sdlWindow)
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Sam Lantinga <slouken@libsdl.org>
parents:
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191 {
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Sam Lantinga <slouken@libsdl.org>
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192 mouseInWindow = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
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193 //TODO: Lose buttons / dragging
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Sam Lantinga <slouken@libsdl.org>
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194 /* Reset to default pointer */
1208
d90b362628ea From: "alan buckley" <alan_baa@hotmail.com>
Sam Lantinga <slouken@libsdl.org>
parents: 1035
diff changeset
195 WIMP_RestoreWimpCursor();
630
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
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196 SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
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parents:
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197 } else
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198 sysEvent = 1;
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Sam Lantinga <slouken@libsdl.org>
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199 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
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200
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Sam Lantinga <slouken@libsdl.org>
parents:
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201 case 5: /* Pointer_Entering_Window */
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Sam Lantinga <slouken@libsdl.org>
parents:
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202 if (message[0] == sdlWindow)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 mouseInWindow = 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
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205 WIMP_ReshowCursor(this);
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Sam Lantinga <slouken@libsdl.org>
parents:
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206 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
207 } else sysEvent = 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 break;
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parents:
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209
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 case 6: /* Mouse_Click */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 if (hasFocus == 0)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 /* First click gives focus if it's not a menu */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214 /* we only count non-menu clicks on a window that has the focus */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 WIMP_SetFocus(message[3]);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 } else
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 doPoll = 0; // So PollMouse gets a chance to pick it up
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 case 7: /* User_Drag_Box - Used for mouse release */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 //TODO: May need to implement this in the future
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 sysEvent = 1;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 case 8: /* Keypressed */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 doPoll = 0; /* PollKeyboard should pick it up */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 if (message[0] != sdlWindow) sysEvent = 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 /*TODO: May want to always pass F12 etc to the wimp
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 {
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230 regs.r[0] = message[6];
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 _kernel_swi(Wimp_ProcessKey, &regs, &regs);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 case 11: /* Lose Caret */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 hasFocus = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 if (message[0] == sdlWindow) SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS);
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 else sysEvent = 1;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 case 12: /* Gain Caret */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 hasFocus = 1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 if (message[0] == sdlWindow) SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 else sysEvent = 1;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 case 17:
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 case 18:
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 sysEvent = 1; /* All messages are passed on */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 switch(message[4])
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254 case 0: /* Quit Event */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 /* No choice - have to quit */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 SDL_Quit();
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 exit(0);
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 break;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 case 8: /* Pre Quit */
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 SDL_PrivateQuit();
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 break;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 case 0x400c1: /* Mode change */
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 WIMP_ModeChanged(this);
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 resizeOnOpen = 1;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 case 9: /* Palette changed */
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 WIMP_PaletteChanged(this);
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271 break;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 }
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273 break;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 default:
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
276 /* Pass unknown events on */
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
277 sysEvent = 1;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 break;
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 }
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 if (sysEvent)
550bccdf04bd Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
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282 {
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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)) doPoll = 0;
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291 }
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292 #if !SDL_THREADS_DISABLED
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293 if (riscos_using_threads)
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294 {
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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) __pthread_start_ticker();
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298 /* Give other threads a better chance of running */
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299 pthread_yield();
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300 }
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301 #endif
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302 }
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303 }
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304
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305 /* Set focus to specified window */
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306 void WIMP_SetFocus(int win)
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307 {
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308 _kernel_swi_regs regs;
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309
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310 regs.r[0] = win;
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311 regs.r[1] = -1; /* Icon handle */
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312 regs.r[2] = 0; /* X-offset we just put it at position 0 */
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313 regs.r[3] = 0; /* Y-offset as above */
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314 regs.r[4] = 1 << 25; /* Caret is invisible */
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315 regs.r[5] = 0; /* index into string */
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316
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317 _kernel_swi(Wimp_SetCaretPosition, &regs, &regs);
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318 }
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319
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320 /** Run background task while in a sleep command */
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321 void RISCOS_BackgroundTasks(void)
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322 {
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323 if (current_video && current_video->hidden->window_handle)
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324 {
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325 WIMP_Poll(current_video, 0);
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326 }
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327 #if SDL_THREADS_DISABLED
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328 if (SDL_timer_running) RISCOS_CheckTimer();
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329 #endif
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330 }