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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 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 Micah Dowty |
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23 micahjd@users.sourceforge.net |
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24 */ |
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25 #include "SDL_config.h" |
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26 |
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27 #include "SDL_video.h" |
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28 #include "SDL_mouse.h" |
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29 #include "../SDL_sysvideo.h" |
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30 #include "../SDL_pixels_c.h" |
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31 #include "../../events/SDL_events_c.h" |
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32 |
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33 #include "SDL_pgvideo.h" |
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34 #include "SDL_pgevents_c.h" |
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35 |
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36 #define PGVID_DRIVER_NAME "picogui" |
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37 |
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38 /* Initialization/Query functions */ |
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39 static int PG_VideoInit(_THIS, SDL_PixelFormat *vformat); |
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40 static SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
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41 static SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
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42 static int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
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43 static void PG_VideoQuit(_THIS); |
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44 |
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45 /* Hardware surface functions */ |
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46 static int PG_AllocHWSurface(_THIS, SDL_Surface *surface); |
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47 static int PG_LockHWSurface(_THIS, SDL_Surface *surface); |
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48 static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface); |
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49 static void PG_FreeHWSurface(_THIS, SDL_Surface *surface); |
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50 |
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51 /* etc. */ |
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52 static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects); |
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53 |
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54 // The implementation dependent data for the window manager cursor |
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55 struct WMcursor { |
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56 /* Our cursor is a PicoGUI theme */ |
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57 pghandle theme; |
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58 } ; |
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59 |
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60 /* WM functions */ |
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61 void PG_SetCaption(_THIS, const char *title, const char *icon); |
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62 WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask, |
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63 int w, int h, int hot_x, int hot_y); |
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64 void PG_FreeWMCursor (_THIS, WMcursor * cursor); |
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65 void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y); |
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66 int PG_ShowWMCursor (_THIS, WMcursor * cursor); |
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67 |
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68 /* PicoGUI driver bootstrap functions */ |
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69 |
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70 static int PG_Available(void) |
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71 { |
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72 /* FIXME: The current client lib doesn't give a way to see if the picogui |
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73 * server is reachable without causing a fatal error if it isn't. |
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74 * This should be fixed in cli_c2, but until then assume we can |
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75 * connect. Since more common drivers like X11 are probed first anyway, |
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76 * this shouldn't be a huge problem. |
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77 */ |
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78 return(1); |
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79 } |
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80 |
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81 static void PG_DeleteDevice(SDL_VideoDevice *device) |
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82 { |
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83 SDL_free(device->hidden); |
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84 SDL_free(device); |
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85 } |
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86 |
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87 static SDL_VideoDevice *PG_CreateDevice(int devindex) |
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88 { |
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89 SDL_VideoDevice *device; |
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90 |
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91 /* Initialize all variables that we clean on shutdown */ |
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92 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
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93 if ( device ) { |
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94 SDL_memset(device, 0, (sizeof *device)); |
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95 device->hidden = (struct SDL_PrivateVideoData *) |
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96 SDL_malloc((sizeof *device->hidden)); |
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97 } |
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98 if ( (device == NULL) || (device->hidden == NULL) ) { |
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99 SDL_OutOfMemory(); |
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100 if ( device ) { |
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101 SDL_free(device); |
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102 } |
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103 return(0); |
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104 } |
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105 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
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106 |
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107 /* Set the function pointers */ |
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108 device->VideoInit = PG_VideoInit; |
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109 device->ListModes = PG_ListModes; |
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110 device->SetVideoMode = PG_SetVideoMode; |
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111 device->CreateYUVOverlay = NULL; |
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112 device->SetColors = PG_SetColors; |
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113 device->UpdateRects = PG_UpdateRects; |
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114 device->VideoQuit = PG_VideoQuit; |
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115 device->AllocHWSurface = PG_AllocHWSurface; |
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116 device->CheckHWBlit = NULL; |
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117 device->FillHWRect = NULL; |
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118 device->SetHWColorKey = NULL; |
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119 device->SetHWAlpha = NULL; |
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120 device->LockHWSurface = PG_LockHWSurface; |
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121 device->UnlockHWSurface = PG_UnlockHWSurface; |
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122 device->FlipHWSurface = NULL; |
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123 device->FreeHWSurface = PG_FreeHWSurface; |
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124 device->SetCaption = PG_SetCaption; |
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125 device->SetIcon = NULL; |
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126 device->IconifyWindow = NULL; |
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127 device->GrabInput = NULL; |
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128 |
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129 device->PumpEvents = PG_PumpEvents; |
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130 device->InitOSKeymap = PG_InitOSKeymap; |
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131 |
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132 device->ShowWMCursor = PG_ShowWMCursor; |
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133 device->CreateWMCursor = PG_CreateWMCursor; |
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134 device->FreeWMCursor = PG_FreeWMCursor; |
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135 device->WarpWMCursor = PG_WarpWMCursor; |
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136 |
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137 device->free = PG_DeleteDevice; |
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138 |
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139 return device; |
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140 } |
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141 |
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142 VideoBootStrap PG_bootstrap = { |
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143 PGVID_DRIVER_NAME, "PicoGUI SDL driver", |
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144 PG_Available, PG_CreateDevice |
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145 }; |
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146 |
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147 |
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148 int PG_VideoInit(_THIS, SDL_PixelFormat *vformat) |
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149 { |
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150 /* Connect to the PicoGUI server. No way to process command line args yet, |
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151 * but since this is based on SHM it's not important to be able to specify |
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152 * a remote PicoGUI server. |
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153 * |
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154 * FIXME: Another nitpick about the current client lib is there's no |
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155 * clean way to indicate that command line args are not available. |
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156 */ |
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157 pgInit(0,(char**)""); |
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158 this->hidden->mi = *pgGetVideoMode(); |
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159 |
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160 /* Create a picogui application and canvas. We'll populate the canvas later. */ |
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161 this->hidden->wApp = pgRegisterApp(PG_APP_NORMAL,"SDL",0); |
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162 this->hidden->wCanvas = pgNewWidget(PG_WIDGET_CANVAS,0,0); |
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163 pgSetWidget(PGDEFAULT, |
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164 PG_WP_SIDE, PG_S_ALL, |
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165 0); |
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166 |
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167 PG_InitEvents(this); |
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168 |
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169 /* Determine the current screen size */ |
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170 this->info.current_w = this->hidden->mi.lxres; |
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171 this->info.current_h = this->hidden->mi.lyres; |
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172 |
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173 /* Determine the screen depth. |
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174 * We change this during the SDL_SetVideoMode implementation... |
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175 * Round up to the nearest Bytes per pixel |
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176 */ |
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177 vformat->BitsPerPixel = this->hidden->mi.bpp; |
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178 vformat->BytesPerPixel = this->hidden->mi.bpp >> 3; |
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179 if (this->hidden->mi.bpp & 7) |
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180 vformat->BytesPerPixel++; |
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181 |
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182 /* We're done! */ |
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183 return(0); |
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184 } |
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185 |
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186 SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
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187 { |
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188 return (SDL_Rect **) -1; |
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189 } |
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190 |
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191 SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current, |
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192 int width, int height, int bpp, Uint32 flags) |
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193 { |
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194 if ( this->hidden->bitmap ) { |
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195 /* Free old bitmap */ |
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196 if (current->pixels) { |
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197 shmdt(current->pixels); |
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198 current->pixels = NULL; |
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199 } |
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200 pgDelete(this->hidden->bitmap); |
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201 } |
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202 |
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203 /* Allocate the new pixel format for the screen */ |
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204 if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { |
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205 SDL_SetError("Couldn't allocate new pixel format for requested mode"); |
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206 return(NULL); |
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207 } |
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208 |
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209 /* Create a new picogui bitmap */ |
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210 this->hidden->bitmap = pgCreateBitmap(width,height); |
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211 this->hidden->shm = *pgMakeSHMBitmap(this->hidden->bitmap); |
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212 current->pixels = shmat(shmget(this->hidden->shm.shm_key, |
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213 this->hidden->shm.shm_length,0),NULL,0); |
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214 |
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215 /* Reset the canvas, and draw persistent and incremental grops. |
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216 * Use mapping and offsets to center it. |
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217 */ |
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218 |
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219 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_NUKE, 0); |
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220 |
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221 /* 0. Set the source position during incremental rendering |
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222 */ |
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223 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC,0,0,0,0); |
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224 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL); |
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225 |
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226 /* 1. Incremental bitmap rendering |
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227 */ |
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228 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP, |
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229 0,0,0,0,this->hidden->bitmap); |
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230 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL); |
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231 |
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232 /* 2. Normal bitmap rendering |
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233 */ |
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234 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP, |
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235 0,0,this->hidden->shm.width,this->hidden->shm.height,this->hidden->bitmap); |
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236 |
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237 /* Set up the new mode framebuffer */ |
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238 current->flags = 0; |
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239 current->w = this->hidden->shm.width; |
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240 current->h = this->hidden->shm.height; |
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241 current->pitch = this->hidden->shm.pitch; |
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242 |
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243 /* Set up pixel format */ |
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244 current->format->BitsPerPixel = this->hidden->shm.bpp; |
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245 current->format->BytesPerPixel = this->hidden->shm.bpp >> 3; |
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246 if (this->hidden->shm.bpp & 7) |
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247 current->format->BytesPerPixel++; |
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248 current->format->palette = NULL; |
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249 current->format->Rmask = this->hidden->shm.red_mask; |
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250 current->format->Gmask = this->hidden->shm.green_mask; |
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251 current->format->Bmask = this->hidden->shm.blue_mask; |
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252 current->format->Amask = this->hidden->shm.alpha_mask; |
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253 current->format->Rshift = this->hidden->shm.red_shift; |
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254 current->format->Gshift = this->hidden->shm.green_shift; |
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255 current->format->Bshift = this->hidden->shm.blue_shift; |
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256 current->format->Ashift = this->hidden->shm.alpha_shift; |
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257 current->format->Rloss = 8 - this->hidden->shm.red_length; |
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258 current->format->Gloss = 8 - this->hidden->shm.green_length; |
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259 current->format->Bloss = 8 - this->hidden->shm.blue_length; |
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260 current->format->Aloss = 8 - this->hidden->shm.alpha_length; |
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261 |
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262 /* Draw the app */ |
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263 pgUpdate(); |
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264 |
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265 /* We're done */ |
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266 return(current); |
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267 } |
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268 |
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269 /* We don't actually allow hardware surfaces other than the main one */ |
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270 static int PG_AllocHWSurface(_THIS, SDL_Surface *surface) |
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271 { |
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272 return(-1); |
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273 } |
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274 static void PG_FreeHWSurface(_THIS, SDL_Surface *surface) |
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275 { |
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276 return; |
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277 } |
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278 |
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279 /* We need to wait for vertical retrace on page flipped displays */ |
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280 static int PG_LockHWSurface(_THIS, SDL_Surface *surface) |
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281 { |
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282 return(0); |
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283 } |
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284 |
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285 static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface) |
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286 { |
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287 return; |
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288 } |
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289 |
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290 static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects) |
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291 { |
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292 int i; |
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293 |
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294 for (i = 0; i < numrects; i++) { |
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295 if (rects[i].w <= 0 || rects[i].h <= 0) |
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296 continue; |
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297 |
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298 /* Schedule an incremental update for this rectangle, using |
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299 * the canvas gropnodes we've loaded beforehand. |
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300 */ |
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301 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 0); |
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302 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4, |
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303 rects[i].x, rects[i].y, |
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304 rects[i].w, rects[i].h); |
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305 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 1); |
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306 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4, |
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307 rects[i].x, rects[i].y, |
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308 rects[i].w, rects[i].h); |
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309 |
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310 /* Go perform the update */ |
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311 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_INCREMENTAL, 0); |
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312 pgSubUpdate(this->hidden->wCanvas); |
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313 } |
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314 } |
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315 |
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316 int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
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317 { |
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318 /* do nothing of note. */ |
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319 return(1); |
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320 } |
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321 |
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322 /* Note: If we are terminated, this could be called in the middle of |
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323 another SDL video routine -- notably UpdateRects. |
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324 */ |
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325 void PG_VideoQuit(_THIS) |
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326 { |
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327 if (this->screen->pixels != NULL) |
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328 { |
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329 shmdt(this->screen->pixels); |
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330 this->screen->pixels = NULL; |
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331 pgDelete(this->hidden->bitmap); |
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332 } |
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333 pgDelete(this->hidden->wCanvas); |
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334 pgDelete(this->hidden->wApp); |
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335 } |
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336 |
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337 void PG_SetCaption(_THIS, const char *title, const char *icon) |
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338 { |
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339 if (title != NULL) |
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340 pgReplaceText(this->hidden->wApp, title); |
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341 pgUpdate(); |
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342 } |
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343 |
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344 /* FIXME: The cursor stuff isn't implemented yet! */ |
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345 |
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346 WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask, |
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347 int w, int h, int hot_x, int hot_y) |
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348 { |
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349 static WMcursor dummy; |
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350 return &dummy; |
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351 } |
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352 |
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353 void PG_FreeWMCursor (_THIS, WMcursor * cursor) |
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354 { |
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355 } |
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356 |
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357 void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y) |
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358 { |
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359 } |
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360 |
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361 int PG_ShowWMCursor (_THIS, WMcursor * cursor) |
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362 { |
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363 return 1; |
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364 } |