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annotate src/sdl.cpp @ 11635:858d735ef724 draft

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(svn r16015) -Codechange: Completing the TransparencyToolbarWidgets enum.
author alberth <alberth@openttd.org>
date Fri, 10 Apr 2009 16:20:54 +0000
parents 82c90cd591ab
children bc7926153e19
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rev   line source
5584
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1 /* $Id$ */
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2
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3 /** @file sdl.cpp Implementation of SDL support. */
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4
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5 #include "stdafx.h"
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7 #ifdef WITH_SDL
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9 #include "openttd.h"
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10 #include "sdl.h"
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11 #include <SDL.h>
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12
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13 #ifdef UNIX
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14 #include <signal.h>
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16 #ifdef __MORPHOS__
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17 /* The system supplied definition of SIG_DFL is wrong on MorphOS */
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18 #undef SIG_DFL
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19 #define SIG_DFL (void (*)(int))0
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20 #endif
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21 #endif
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22
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23 static int _sdl_usage;
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25 #ifdef DYNAMICALLY_LOADED_SDL
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27 #include "win32.h"
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29 #define M(x) x "\0"
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30 static const char sdl_files[] =
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31 M("sdl.dll")
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32 M("SDL_Init")
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33 M("SDL_InitSubSystem")
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34 M("SDL_GetError")
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35 M("SDL_QuitSubSystem")
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36 M("SDL_UpdateRect")
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37 M("SDL_UpdateRects")
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38 M("SDL_SetColors")
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39 M("SDL_WM_SetCaption")
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40 M("SDL_ShowCursor")
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41 M("SDL_FreeSurface")
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42 M("SDL_PollEvent")
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43 M("SDL_WarpMouse")
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44 M("SDL_GetTicks")
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45 M("SDL_OpenAudio")
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46 M("SDL_PauseAudio")
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47 M("SDL_CloseAudio")
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48 M("SDL_LockSurface")
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49 M("SDL_UnlockSurface")
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50 M("SDL_GetModState")
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51 M("SDL_Delay")
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52 M("SDL_Quit")
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53 M("SDL_SetVideoMode")
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54 M("SDL_EnableKeyRepeat")
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55 M("SDL_EnableUNICODE")
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56 M("SDL_VideoDriverName")
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57 M("SDL_ListModes")
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58 M("SDL_GetKeyState")
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59 M("SDL_LoadBMP_RW")
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60 M("SDL_RWFromFile")
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61 M("SDL_SetColorKey")
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62 M("SDL_WM_SetIcon")
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63 M("SDL_MapRGB")
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64 M("")
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65 ;
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66 #undef M
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67
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68 SDLProcs sdl_proc;
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69
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70 static const char *LoadSdlDLL()
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71 {
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72 if (sdl_proc.SDL_Init != NULL)
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73 return NULL;
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74 if (!LoadLibraryList((Function *)(void *)&sdl_proc, sdl_files))
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75 return "Unable to load sdl.dll";
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76 return NULL;
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77 }
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78
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79 #endif /* DYNAMICALLY_LOADED_SDL */
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80
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81
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82 #ifdef UNIX
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83 static void SdlAbort(int sig)
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84 {
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85 /* Own hand-made parachute for the cases of failed assertions. */
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86 SDL_CALL SDL_Quit();
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87
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88 switch (sig) {
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89 case SIGSEGV:
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90 case SIGFPE:
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91 signal(sig, SIG_DFL);
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92 raise(sig);
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93 break;
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94
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95 default:
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96 break;
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97 }
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98 }
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99 #endif
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100
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101
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102 const char *SdlOpen(uint32 x)
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103 {
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104 #ifdef DYNAMICALLY_LOADED_SDL
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105 {
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106 const char *s = LoadSdlDLL();
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107 if (s != NULL) return s;
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108 }
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109 #endif
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110 if (_sdl_usage++ == 0) {
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111 if (SDL_CALL SDL_Init(x) == -1)
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112 return SDL_CALL SDL_GetError();
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113 } else if (x != 0) {
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114 if (SDL_CALL SDL_InitSubSystem(x) == -1)
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115 return SDL_CALL SDL_GetError();
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116 }
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117
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118 #ifdef UNIX
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119 signal(SIGABRT, SdlAbort);
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120 signal(SIGSEGV, SdlAbort);
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121 signal(SIGFPE, SdlAbort);
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122 #endif
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123
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124 return NULL;
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125 }
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126
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127 void SdlClose(uint32 x)
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128 {
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129 if (x != 0)
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130 SDL_CALL SDL_QuitSubSystem(x);
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131 if (--_sdl_usage == 0) {
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132 SDL_CALL SDL_Quit();
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133 #ifdef UNIX
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134 signal(SIGABRT, SIG_DFL);
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135 signal(SIGSEGV, SIG_DFL);
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136 signal(SIGFPE, SIG_DFL);
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137 #endif
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138 }
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139 }
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140
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141 #endif