Mercurial > sdl-ios-xcode
annotate src/video/riscos/SDL_wimpvideo.c @ 4355:9b464226e541 SDL-1.2
Fixed bug #855
Ludwig Nussel 2009-10-18 06:31:52 PDT
an mprotect call was added to fix bug 528. However that results in a buffer
that allows writing and code execution. Ie the no-execute security features of
modern operating systems are defeated this way. Two mprotect calls are needed.
One to make the buffer executable but not writeable when done and another one
to make the buffer writeable again if the content needs to be changed.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 18 Oct 2009 17:31:37 +0000 |
parents | a1b03ba2fcd0 |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
630
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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 RISC OS Wimp display. |
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29 */ |
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30 |
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31 #include "SDL_video.h" |
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32 #include "SDL_mouse.h" |
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33 #include "../SDL_sysvideo.h" |
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34 #include "../SDL_pixels_c.h" |
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35 #include "../../events/SDL_events_c.h" |
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36 |
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37 #include "SDL_riscostask.h" |
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38 #include "SDL_riscosvideo.h" |
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39 #include "SDL_riscosevents_c.h" |
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40 #include "SDL_riscosmouse_c.h" |
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41 |
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42 #include "kernel.h" |
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43 #include "swis.h" |
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44 |
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45 /* Initialization/Query functions */ |
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46 SDL_Rect **WIMP_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
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47 SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
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48 int WIMP_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
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49 void WIMP_SetWMCaption(_THIS, const char *title, const char *icon); |
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50 |
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51 |
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52 extern unsigned char *WIMP_CreateBuffer(int width, int height, int bpp); |
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53 extern void WIMP_PumpEvents(_THIS); |
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54 extern void WIMP_PlotSprite(_THIS, int x, int y); |
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55 extern void WIMP_SetupPlotInfo(_THIS); |
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56 extern void WIMP_SetFocus(int win); |
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57 |
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58 /* etc. */ |
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59 static void WIMP_UpdateRects(_THIS, int numrects, SDL_Rect *rects); |
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60 |
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61 /* RISC OS Wimp handling helpers */ |
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62 void WIMP_ReadModeInfo(_THIS); |
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63 unsigned int WIMP_SetupWindow(_THIS, SDL_Surface *surface); |
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64 void WIMP_SetDeviceMode(_THIS); |
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65 void WIMP_DeleteWindow(_THIS); |
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66 |
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67 /* FULLSCREEN function required for wimp/fullscreen toggling */ |
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68 extern int FULLSCREEN_SetMode(int width, int height, int bpp); |
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69 |
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70 /* Currently need to set this up here as it only works if you |
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71 start up in a Wimp mode */ |
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72 extern int RISCOS_ToggleFullScreen(_THIS, int fullscreen); |
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73 |
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74 extern int riscos_backbuffer; |
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75 extern int mouseInWindow; |
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76 extern int riscos_closeaction; |
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77 |
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78 /* Following needed to ensure window is shown immediately */ |
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79 extern int hasFocus; |
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80 extern void WIMP_Poll(_THIS, int waitTime); |
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81 |
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82 SDL_Surface *WIMP_SetVideoMode(_THIS, SDL_Surface *current, |
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83 int width, int height, int bpp, Uint32 flags) |
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84 { |
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85 Uint32 Rmask = 0; |
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86 Uint32 Gmask = 0; |
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87 Uint32 Bmask = 0; |
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88 char *buffer = NULL; |
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89 int bytesPerPixel = 1; |
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90 |
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91 /* Don't support double buffering in Wimp mode */ |
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92 flags &= ~SDL_DOUBLEBUF; |
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93 flags &= ~SDL_HWSURFACE; |
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94 |
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95 switch(bpp) |
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96 { |
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97 case 8: |
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98 /* Emulated palette using ColourTrans */ |
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99 flags |= SDL_HWPALETTE; |
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100 break; |
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101 |
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102 case 15: |
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103 case 16: |
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104 Bmask = 0x00007c00; |
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105 Gmask = 0x000003e0; |
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106 Rmask = 0x0000001f; |
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107 bytesPerPixel = 2; |
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108 break; |
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109 |
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110 case 32: |
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111 Bmask = 0x00ff0000; |
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112 Gmask = 0x0000ff00; |
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113 Rmask = 0x000000ff; |
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114 bytesPerPixel = 4; |
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115 break; |
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116 |
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117 default: |
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118 SDL_SetError("Pixel depth not supported"); |
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119 return NULL; |
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120 break; |
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121 } |
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122 |
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123 /* printf("Setting mode %dx%d\n", width, height);*/ |
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124 |
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125 /* Allocate the new pixel format for the screen */ |
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126 if ( ! SDL_ReallocFormat(current, bpp, Rmask, Gmask, Bmask, 0) ) { |
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127 SDL_SetError("Couldn't allocate new pixel format for requested mode"); |
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128 return(NULL); |
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129 } |
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130 |
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131 /* Set up the new mode framebuffer */ |
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132 current->w = width; |
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133 this->hidden->height = current->h = height; |
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134 |
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135 if (bpp == 15) bpp = 16; |
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136 buffer = WIMP_CreateBuffer(width, height, bpp); |
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137 if (buffer == NULL) |
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138 { |
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139 SDL_SetError("Couldn't create sprite for video memory"); |
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140 return (NULL); |
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141 } |
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142 |
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143 this->hidden->bank[0] = buffer + 60; /* Start of sprite data */ |
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144 if (bpp == 8) this->hidden->bank[0] += 2048; /* 8bpp sprite have palette first */ |
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145 |
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146 this->hidden->bank[1] = buffer; /* Start of buffer */ |
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147 |
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148 /* Remember sprite buffer so it can be freed later */ |
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149 if (this->hidden->alloc_bank) SDL_free(this->hidden->alloc_bank); |
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150 this->hidden->alloc_bank = buffer; |
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151 |
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152 current->pitch = width * bytesPerPixel; |
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153 if ((current->pitch & 3)) |
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154 { |
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155 /* Sprites are 32bit word aligned */ |
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156 current->pitch += (4 - (current->pitch & 3)); |
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157 } |
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158 |
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159 current->flags = flags | SDL_PREALLOC; |
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160 |
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161 WIMP_ReadModeInfo(this); |
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162 |
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163 SDL_memset(this->hidden->bank[0], 0, height * current->pitch); |
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164 |
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165 this->hidden->current_bank = 0; |
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166 current->pixels = this->hidden->bank[0]; |
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167 |
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168 |
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169 if (WIMP_SetupWindow(this, current) == 0) |
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170 { |
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171 SDL_SetError("Unable to create window to display surface"); |
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172 return NULL; |
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173 } |
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174 |
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175 /* Reset device functions for the wimp */ |
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176 WIMP_SetDeviceMode(this); |
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177 |
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178 /* Needs to set up plot info after window has been created */ |
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179 /* Not sure why, but plots don't work if I do it earlier */ |
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180 WIMP_SetupPlotInfo(this); |
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181 |
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182 /* Poll until window is shown */ |
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183 { |
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184 /* We wait until it gets the focus, but give up after 5 seconds |
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185 in case the focus is prevented in any way. |
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186 */ |
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187 Uint32 now = SDL_GetTicks(); |
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188 while (!hasFocus && SDL_GetTicks() - now < 5000) |
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189 { |
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190 WIMP_Poll(this, 0); |
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191 } |
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192 } |
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193 |
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194 /* We're done */ |
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195 return(current); |
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196 } |
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197 |
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198 |
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199 void WIMP_ReadModeInfo(_THIS) |
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200 { |
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201 _kernel_swi_regs regs; |
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202 int vars[6]; |
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203 int vals[5]; |
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204 |
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205 vars[0] = 4; /* XEig */ |
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206 vars[1] = 5; /* YEig */ |
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207 vars[2] = 9; /* Log base 2 bpp */ |
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208 vars[3] = 11; /* Screen Width - 1 */ |
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209 vars[4] = 12; /* Screen Depth - 1 */ |
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210 vars[5] = -1; /* Terminate list */ |
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211 |
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212 regs.r[0] = (int)vars; |
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213 regs.r[1] = (int)vals; |
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214 _kernel_swi(OS_ReadVduVariables, ®s, ®s); |
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215 this->hidden->xeig = vals[0]; |
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216 this->hidden->yeig = vals[1]; |
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217 this->hidden->screen_bpp = 1 << vals[2]; |
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218 this->hidden->screen_width = vals[3] + 1; |
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219 this->hidden->screen_height = vals[4] + 1; |
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220 } |
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221 |
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222 /* Set device function to call the correct versions for running |
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223 in a wimp window */ |
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224 |
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225 void WIMP_SetDeviceMode(_THIS) |
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226 { |
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227 if (this->UpdateRects == WIMP_UpdateRects) return; /* Already set up */ |
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228 |
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229 this->SetColors = WIMP_SetColors; |
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230 this->UpdateRects = WIMP_UpdateRects; |
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231 |
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232 this->FlipHWSurface = NULL; |
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233 |
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234 this->SetCaption = WIMP_SetWMCaption; |
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235 this->SetIcon = NULL; |
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236 this->IconifyWindow = NULL; |
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237 |
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238 this->ShowWMCursor = WIMP_ShowWMCursor; |
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239 this->WarpWMCursor = WIMP_WarpWMCursor; |
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240 |
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241 this->ToggleFullScreen = RISCOS_ToggleFullScreen; |
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242 |
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243 this->PumpEvents = WIMP_PumpEvents; |
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244 } |
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245 |
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246 /* Setup the Window to display the surface */ |
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247 unsigned int WIMP_SetupWindow(_THIS, SDL_Surface *surface) |
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248 { |
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249 _kernel_swi_regs regs; |
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250 int window_data[23]; |
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251 int *window_block = window_data+1; |
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252 int x = (this->hidden->screen_width - surface->w) / 2; |
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253 int y = (this->hidden->screen_height - surface->h) / 2; |
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254 int xeig = this->hidden->xeig; |
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255 int yeig = this->hidden->yeig; |
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256 |
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257 mouseInWindow = 0; |
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258 |
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259 /* Always delete the window and recreate on a change */ |
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260 if (this->hidden->window_handle) WIMP_DeleteWindow(this); |
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261 |
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262 /* Setup window co-ordinates */ |
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263 window_block[0] = x << xeig; |
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264 window_block[1] = y << yeig; |
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265 window_block[2] = window_block[0] + (surface->w << xeig); |
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266 window_block[3] = window_block[1] + (surface->h << yeig); |
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267 |
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268 |
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269 window_block[4] = 0; /* Scroll offsets */ |
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270 window_block[5] = 0; |
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271 window_block[6] = -1; /* Open on top of window stack */ |
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272 |
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273 window_block[7] = 0x85040042; /* Window flags */ |
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274 if (riscos_closeaction != 0) window_block[7] |= 0x2000000; |
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275 |
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276 /* TODO: Take into account surface->flags */ |
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277 |
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278 window_block[8] = 0xff070207; /* Window colours */ |
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279 window_block[9] = 0x000c0103; |
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280 window_block[10] = 0; /* Work area minimum */ |
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281 window_block[11] = -surface->h << yeig; |
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282 window_block[12] = surface->w << xeig; /* Work area maximum */ |
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283 window_block[13] = 0; |
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284 window_block[14] = 0x2700013d; /* Title icon flags */ |
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285 window_block[15] = 0x00003000; /* Work area flags - Mouse click down reported */ |
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286 window_block[16] = 1; /* Sprite area control block pointer */ |
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287 window_block[17] = 0x00100010; /* Minimum window size (width & height) (16x16)*/ |
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288 window_block[18] = (int)this->hidden->title; /* Title data */ |
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289 window_block[19] = -1; |
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290 window_block[20] = 256; |
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291 window_block[21] = 0; /* Number of icons */ |
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292 |
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293 regs.r[1] = (unsigned int)(window_block); |
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294 |
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295 /* Create the window */ |
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296 if (_kernel_swi(Wimp_CreateWindow, ®s, ®s) == NULL) |
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297 { |
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298 this->hidden->window_handle = window_data[0] = regs.r[0]; |
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299 |
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300 /* Show the window on the screen */ |
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301 regs.r[1] = (unsigned int)window_data; |
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302 if (_kernel_swi(Wimp_OpenWindow, ®s, ®s) == NULL) |
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303 { |
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304 WIMP_SetFocus(this->hidden->window_handle); |
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305 } else |
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306 { |
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307 WIMP_DeleteWindow(this); |
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308 } |
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309 } |
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310 |
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311 return this->hidden->window_handle; |
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312 } |
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313 |
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314 /* Destroy the Window */ |
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315 |
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316 void WIMP_DeleteWindow(_THIS) |
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317 { |
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318 _kernel_swi_regs regs; |
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319 regs.r[1] = (unsigned int)&(this->hidden->window_handle); |
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320 _kernel_swi(Wimp_DeleteWindow, ®s, ®s); |
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321 this->hidden->window_handle = 0; |
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322 } |
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323 |
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324 |
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325 void WIMP_UpdateRects(_THIS, int numrects, SDL_Rect *rects) |
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326 { |
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327 _kernel_swi_regs regs; |
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328 int update_block[12]; |
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329 int xeig = this->hidden->xeig; |
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330 int yeig = this->hidden->yeig; |
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331 int j; |
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332 update_block[0] = this->hidden->window_handle; |
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333 |
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334 for (j = 0; j < numrects; j++) |
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335 { |
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336 update_block[1] = rects[j].x << xeig; /* Min X */ |
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337 update_block[4] = -(rects[j].y << yeig); |
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338 update_block[3] = update_block[1] + (rects[j].w << xeig); |
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339 update_block[2] = update_block[4] - (rects[j].h << yeig); |
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340 |
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341 regs.r[1] = (int)update_block; |
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342 /* Update window can fail if called before first poll */ |
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343 if (_kernel_swi(Wimp_UpdateWindow, ®s, ®s) == 0) |
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344 { |
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345 while (regs.r[0]) |
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346 { |
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347 WIMP_PlotSprite(this, update_block[1], update_block[2]); |
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348 _kernel_swi(Wimp_GetRectangle, ®s, ®s); |
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349 } |
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350 } |
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351 } |
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352 } |
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353 |
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354 |
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355 int WIMP_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
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356 { |
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357 unsigned int *pal = (unsigned int *)(this->hidden->bank[1]+60); |
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358 int j; |
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359 SDL_Rect update; |
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360 |
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361 pal += firstcolor*2; |
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362 for (j = 0; j < ncolors; j++) |
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363 { |
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364 *pal = (((unsigned int)colors->r) << 8) |
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365 + (((unsigned int)colors->g) << 16) |
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366 + (((unsigned int)colors->b) << 24); |
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367 pal[1] = *pal; |
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368 pal += 2; |
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369 colors++; |
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diff
changeset
|
370 } |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
371 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
372 WIMP_SetupPlotInfo(this); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
373 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
374 /* Need to refresh the window */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
375 update.x = 0; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
376 update.y = 0; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
377 update.w = SDL_VideoSurface->w; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
378 update.h = SDL_VideoSurface->h; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
379 WIMP_UpdateRects(this, 1, &update); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
380 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
381 return 1; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
382 } |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
383 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
384 void WIMP_SetWMCaption(_THIS, const char *title, const char *icon) |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
385 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
386 _kernel_swi_regs regs; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
387 |
1379
c0a74f199ecf
Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents:
1361
diff
changeset
|
388 SDL_strlcpy(this->hidden->title, title, SDL_arraysize(this->hidden->title)); |
630
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
389 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
390 if (RISCOS_GetWimpVersion() < 380) |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
391 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
392 int block[6]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
393 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
394 regs.r[1] = (int)block; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
395 _kernel_swi(Wimp_GetCaretPosition, ®s, ®s); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
396 if (block[0] == (int)this->hidden->window_handle) |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
397 { |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
398 regs.r[0] = -1; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
399 _kernel_swi(Wimp_SetCaretPosition, ®s,®s); |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
400 } else |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
401 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
402 regs.r[0] = this->hidden->window_handle; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
403 regs.r[1] = -1; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
404 regs.r[2] = -1; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
405 regs.r[3] = -1; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
406 _kernel_swi(Wimp_SetCaretPosition, ®s,®s); |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
407 } |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
408 regs.r[0] = block[0]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
409 regs.r[1] = block[1]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
410 regs.r[2] = block[2]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
411 regs.r[3] = block[3]; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
412 regs.r[4] = block[4]; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
413 regs.r[5] = block[5]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
414 _kernel_swi(Wimp_SetCaretPosition, ®s,®s); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
415 } else |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
416 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
417 regs.r[0] = this->hidden->window_handle; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
418 regs.r[1] = 0x4b534154; /* "TASK" */ |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
419 regs.r[2] = 3; /* Redraw title */ |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
420 _kernel_swi(Wimp_ForceRedraw, ®s, ®s); |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
421 } |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
422 } |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
423 |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
424 void WIMP_RefreshDesktop(_THIS) |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
425 { |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
426 int width = this->hidden->screen_width << this->hidden->xeig; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
427 int height = this->hidden->screen_height << this->hidden->yeig; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
428 _kernel_swi_regs regs; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
429 regs.r[0] = -1; /* Whole screen */ |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
430 regs.r[1] = 0; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
431 regs.r[2] = 0; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
432 regs.r[3] = width; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
433 regs.r[4] = height; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
434 _kernel_swi(Wimp_ForceRedraw, ®s, ®s); |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
435 } |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
436 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
437 /* Toggle to window from full screen */ |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
438 int WIMP_ToggleFromFullScreen(_THIS) |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
439 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
440 int width = this->screen->w; |
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Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
441 int height = this->screen->h; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
442 int bpp = this->screen->format->BitsPerPixel; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
443 char *buffer = NULL; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
444 char *old_bank[2]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
445 char *old_alloc_bank; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
446 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
447 /* Ensure flags are OK */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
448 this->screen->flags &= ~(SDL_DOUBLEBUF|SDL_HWSURFACE); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
449 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
450 if (this->hidden->bank[0] == this->hidden->alloc_bank || riscos_backbuffer == 0) |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
451 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
452 /* Need to create a sprite for the screen and copy the data to it */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
453 char *data; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
454 buffer = WIMP_CreateBuffer(width, height, bpp); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
455 data = buffer + 60; /* Start of sprite data */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
456 if (bpp == 8) data += 2048; /* 8bpp sprite have palette first */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
457 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
458 if (buffer == NULL) return 0; |
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
459 SDL_memcpy(data, this->hidden->bank[0], width * height * this->screen->format->BytesPerPixel); |
630
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
460 } |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
461 /* else We've switch to full screen before so we already have a sprite */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
462 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
463 old_bank[0] = this->hidden->bank[0]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
464 old_bank[1] = this->hidden->bank[1]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
465 old_alloc_bank = this->hidden->alloc_bank; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
466 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
467 if (buffer != NULL) this->hidden->alloc_bank = buffer; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
468 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
469 this->hidden->bank[1] = this->hidden->alloc_bank; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
470 this->hidden->bank[0] = this->hidden->bank[1] + 60; /* Start of sprite data */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
471 if (bpp == 8) this->hidden->bank[0] += 2048; /* 8bpp sprite have palette first */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
472 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
473 this->hidden->current_bank = 0; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
474 this->screen->pixels = this->hidden->bank[0]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
475 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
476 RISCOS_RestoreWimpMode(); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
477 WIMP_ReadModeInfo(this); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
478 if (WIMP_SetupWindow(this, this->screen)) |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
479 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
480 WIMP_SetDeviceMode(this); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
481 WIMP_SetupPlotInfo(this); |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
482 |
1035
974ba6ae0fa3
Date: Wed, 26 Jan 2005 13:37:09 GMT
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
483 if (riscos_backbuffer == 0) riscos_backbuffer = 1; |
630
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
484 |
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
485 if (buffer && old_alloc_bank) SDL_free(old_alloc_bank); |
630
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
486 |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
487 return 1; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
488 } else |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
489 { |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
490 /* Drop back to full screen mode on failure */ |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
491 this->hidden->bank[0] = old_bank[0]; |
550bccdf04bd
Added initial support for RISC OS (thanks Peter Naulls!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
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492 this->hidden->bank[1] = old_bank[1]; |
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493 this->hidden->alloc_bank = old_alloc_bank; |
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Use SDL_ prefixed versions of C library functions.
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494 if (buffer) SDL_free(buffer); |
630
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495 |
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496 RISCOS_StoreWimpMode(); |
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497 FULLSCREEN_SetMode(width, height, bpp); |
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498 } |
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499 |
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500 return 0; |
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501 } |