Mercurial > sdl-ios-xcode
annotate src/video/win32/SDL_win32modes.c @ 3500:4b594623401b
Work in progress on multi-display support:
* Added display parameter to many internal functions so video modes can be set on displays that aren't the public current one.
* The fullscreen mode is associated with fullscreen windows - not displays, so different windows more naturally have a mode associated with them based on their width and height. It's no longer necessary to specify a fullscreen mode, a default one will be picked automatically for fullscreen windows.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 01 Dec 2009 05:57:15 +0000 |
parents | 51750b7a966f |
children | 76f9b76ddf0f |
rev | line source |
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1895
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1 /* |
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2 SDL - Simple DirectMedia Layer |
2859 | 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 Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 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 Lesser 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 Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_win32video.h" |
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25 |
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26 |
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27 static SDL_bool |
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28 WIN_GetDisplayMode(LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode) |
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29 { |
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30 SDL_DisplayModeData *data; |
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31 DEVMODE devmode; |
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32 HDC hdc; |
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33 |
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34 devmode.dmSize = sizeof(devmode); |
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35 devmode.dmDriverExtra = 0; |
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36 if (!EnumDisplaySettings(deviceName, index, &devmode)) { |
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37 return SDL_FALSE; |
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38 } |
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39 |
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40 data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data)); |
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41 if (!data) { |
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42 return SDL_FALSE; |
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43 } |
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44 data->DeviceMode = devmode; |
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45 data->DeviceMode.dmFields = |
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46 (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | |
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47 DM_DISPLAYFLAGS); |
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48 |
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49 /* Fill in the mode information */ |
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50 mode->format = SDL_PIXELFORMAT_UNKNOWN; |
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51 mode->w = devmode.dmPelsWidth; |
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52 mode->h = devmode.dmPelsHeight; |
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53 mode->refresh_rate = devmode.dmDisplayFrequency; |
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54 mode->driverdata = data; |
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55 #ifdef _WIN32_WCE |
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56 /* In WinCE EnumDisplaySettings(ENUM_CURRENT_SETTINGS) doesn't take the user defined orientation |
3139 | 57 into account but GetSystemMetrixs does. */ |
58 if (index == ENUM_CURRENT_SETTINGS) { | |
59 mode->w = GetSystemMetrics(SM_CXSCREEN); | |
60 mode->h = GetSystemMetrics(SM_CYSCREEN); | |
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61 } |
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62 #endif |
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63 |
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64 /* WinCE has no GetDIBits, therefore we can't use it to get the display format */ |
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65 #ifndef _WIN32_WCE |
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66 if (index == ENUM_CURRENT_SETTINGS |
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67 && (hdc = CreateDC(deviceName, NULL, NULL, NULL)) != NULL) { |
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68 char bmi_data[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)]; |
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69 LPBITMAPINFO bmi; |
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70 HBITMAP hbm; |
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71 |
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72 SDL_zero(bmi_data); |
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73 bmi = (LPBITMAPINFO) bmi_data; |
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74 bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); |
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75 |
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76 hbm = CreateCompatibleBitmap(hdc, 1, 1); |
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77 GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS); |
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78 GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS); |
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79 DeleteObject(hbm); |
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80 DeleteDC(hdc); |
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81 if (bmi->bmiHeader.biCompression == BI_BITFIELDS) { |
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82 switch (*(Uint32 *) bmi->bmiColors) { |
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83 case 0x00FF0000: |
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84 mode->format = SDL_PIXELFORMAT_RGB888; |
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85 break; |
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86 case 0x000000FF: |
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87 mode->format = SDL_PIXELFORMAT_BGR888; |
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88 break; |
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89 case 0xF800: |
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90 mode->format = SDL_PIXELFORMAT_RGB565; |
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91 break; |
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92 case 0x7C00: |
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93 mode->format = SDL_PIXELFORMAT_RGB555; |
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94 break; |
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95 } |
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96 } else if (bmi->bmiHeader.biBitCount == 8) { |
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97 mode->format = SDL_PIXELFORMAT_INDEX8; |
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98 } else if (bmi->bmiHeader.biBitCount == 4) { |
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99 mode->format = SDL_PIXELFORMAT_INDEX4LSB; |
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100 } |
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101 } else |
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102 #endif /* _WIN32_WCE */ |
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103 { |
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104 /* FIXME: Can we tell what this will be? */ |
3186 | 105 if ((devmode.dmFields & DM_BITSPERPEL) == DM_BITSPERPEL) { |
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106 switch (devmode.dmBitsPerPel) { |
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107 case 32: |
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108 mode->format = SDL_PIXELFORMAT_RGB888; |
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109 break; |
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110 case 24: |
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111 mode->format = SDL_PIXELFORMAT_RGB24; |
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112 break; |
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113 case 16: |
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114 mode->format = SDL_PIXELFORMAT_RGB565; |
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115 break; |
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116 case 15: |
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117 mode->format = SDL_PIXELFORMAT_RGB555; |
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118 break; |
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119 case 8: |
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120 mode->format = SDL_PIXELFORMAT_INDEX8; |
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121 break; |
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122 case 4: |
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123 mode->format = SDL_PIXELFORMAT_INDEX4LSB; |
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124 break; |
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125 } |
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127 } |
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128 return SDL_TRUE; |
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129 } |
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130 |
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131 static SDL_bool |
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132 WIN_AddDisplay(LPTSTR DeviceName) |
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133 { |
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134 SDL_VideoDisplay display; |
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135 SDL_DisplayData *displaydata; |
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136 SDL_DisplayMode mode; |
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137 |
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138 #ifdef DEBUG_MODES |
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139 printf("Display: %s\n", WIN_StringToUTF8(DeviceName)); |
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140 #endif |
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141 if (!WIN_GetDisplayMode(DeviceName, ENUM_CURRENT_SETTINGS, &mode)) { |
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142 return SDL_FALSE; |
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143 } |
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144 |
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145 displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata)); |
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146 if (!displaydata) { |
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147 return SDL_FALSE; |
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148 } |
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149 SDL_memcpy(displaydata->DeviceName, DeviceName, |
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150 sizeof(displaydata->DeviceName)); |
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151 |
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152 SDL_zero(display); |
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153 display.desktop_mode = mode; |
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154 display.current_mode = mode; |
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155 display.driverdata = displaydata; |
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156 SDL_AddVideoDisplay(&display); |
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157 return SDL_TRUE; |
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158 } |
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159 |
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160 void |
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161 WIN_InitModes(_THIS) |
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162 { |
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163 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata; |
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164 DWORD i, j, count; |
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165 DISPLAY_DEVICE device; |
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166 |
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167 device.cb = sizeof(device); |
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168 for (i = 0;; ++i) { |
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169 TCHAR DeviceName[32]; |
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170 |
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171 if (!EnumDisplayDevices(NULL, i, &device, 0)) { |
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172 break; |
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173 } |
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174 if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) { |
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175 continue; |
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176 } |
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177 SDL_memcpy(DeviceName, device.DeviceName, sizeof(DeviceName)); |
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178 #ifdef DEBUG_MODES |
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179 printf("Device: %s\n", WIN_StringToUTF8(DeviceName)); |
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180 #endif |
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181 count = 0; |
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182 for (j = 0;; ++j) { |
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183 if (!EnumDisplayDevices(DeviceName, j, &device, 0)) { |
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184 break; |
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185 } |
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186 if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) { |
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187 continue; |
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188 } |
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189 count += WIN_AddDisplay(device.DeviceName); |
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190 } |
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191 if (count == 0) { |
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192 WIN_AddDisplay(DeviceName); |
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193 } |
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194 } |
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195 } |
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196 |
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197 void |
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198 WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display) |
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199 { |
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200 SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata; |
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201 DWORD i; |
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202 SDL_DisplayMode mode; |
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203 |
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204 for (i = 0;; ++i) { |
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205 if (!WIN_GetDisplayMode(data->DeviceName, i, &mode)) { |
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206 break; |
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207 } |
3186 | 208 if (mode.format != SDL_PIXELFORMAT_UNKNOWN) |
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209 if (!SDL_AddDisplayMode(display, &mode)) { |
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210 SDL_free(mode.driverdata); |
3186 | 211 } |
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212 } |
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213 } |
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214 |
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215 int |
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216 WIN_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode) |
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217 { |
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218 SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata; |
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219 SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata; |
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220 LONG status; |
3139 | 221 |
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222 #ifdef _WIN32_WCE |
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223 /* TODO: implement correctly. |
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224 On my Asus MyPAL, if I execute the code below |
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225 I get DISP_CHANGE_BADFLAGS and the Titlebar of the fullscreen window stays |
3139 | 226 visible ... (SDL_RaiseWindow() would fix that one) */ |
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227 return 0; |
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228 #endif |
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229 |
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230 status = |
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231 ChangeDisplaySettingsEx(displaydata->DeviceName, &data->DeviceMode, |
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232 NULL, CDS_FULLSCREEN, NULL); |
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233 if (status == DISP_CHANGE_SUCCESSFUL) { |
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234 return 0; |
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235 } else { |
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236 const char *reason = "Unknown reason"; |
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237 switch (status) { |
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238 case DISP_CHANGE_BADFLAGS: |
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239 reason = "DISP_CHANGE_BADFLAGS"; |
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240 break; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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241 case DISP_CHANGE_BADMODE: |
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242 reason = "DISP_CHANGE_BADMODE"; |
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243 break; |
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244 case DISP_CHANGE_BADPARAM: |
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245 reason = "DISP_CHANGE_BADPARAM"; |
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246 break; |
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247 case DISP_CHANGE_FAILED: |
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248 reason = "DISP_CHANGE_FAILED"; |
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249 break; |
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250 } |
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251 SDL_SetError("ChangeDisplaySettingsEx() failed: %s", reason); |
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252 return -1; |
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253 } |
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254 } |
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255 |
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256 void |
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257 WIN_QuitModes(_THIS) |
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258 { |
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259 ChangeDisplaySettingsEx(NULL, NULL, NULL, 0, NULL); |
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260 } |
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261 |
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262 /* vi: set ts=4 sw=4 expandtab: */ |