Mercurial > sdl-ios-xcode

annotate src/video/picogui/SDL_pgvideo.c @ 4383:daf9e6037596 SDL-1.2

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Gregory Smith Another one for the "How did this ever work?" file: when DX5_HandleMessage is called with WM_ACTIVATEAPP, it goes past the end of the 2-element SDL_DIdev array and if there doesn't happen to be a 0 in the memory next to it, crashes. Patch against SVN attached.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 15 Nov 2009 17:21:24 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU 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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parents:
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140 }
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parents:
diff changeset
141
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142 VideoBootStrap PG_bootstrap = {
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143 PGVID_DRIVER_NAME, "PicoGUI SDL driver",
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parents:
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144 PG_Available, PG_CreateDevice
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Sam Lantinga <slouken@libsdl.org>
parents:
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145 };
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parents:
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146
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diff changeset
147
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148 int PG_VideoInit(_THIS, SDL_PixelFormat *vformat)
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149 {
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parents:
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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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parents:
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152 * a remote PicoGUI server.
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153 *
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parents:
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154 * FIXME: Another nitpick about the current client lib is there's no
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parents:
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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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parents:
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160 /* Create a picogui application and canvas. We'll populate the canvas later. */
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parents:
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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
1545
8d9bb0cf2c2a Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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parents: 1402
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169 /* Determine the current screen size */
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parents: 1402
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170 this->info.current_w = this->hidden->mi.lxres;
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parents: 1402
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171 this->info.current_h = this->hidden->mi.lyres;
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parents: 1402
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172
433
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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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parents:
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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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parents:
diff changeset
203 /* Allocate the new pixel format for the screen */
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parents:
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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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parents:
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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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parents:
diff changeset
215 /* Reset the canvas, and draw persistent and incremental grops.
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 * Use mapping and offsets to center it.
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217 */
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diff changeset
218
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219 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_NUKE, 0);
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parents:
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220
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parents:
diff changeset
221 /* 0. Set the source position during incremental rendering
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
222 */
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parents:
diff changeset
223 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC,0,0,0,0);
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parents:
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224 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);
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parents:
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225
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 /* 1. Incremental bitmap rendering
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diff changeset
227 */
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diff changeset
228 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
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parents:
diff changeset
229 0,0,0,0,this->hidden->bitmap);
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parents:
diff changeset
230 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);
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parents:
diff changeset
231
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parents:
diff changeset
232 /* 2. Normal bitmap rendering
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diff changeset
233 */
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diff changeset
234 pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
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parents:
diff changeset
235 0,0,this->hidden->shm.width,this->hidden->shm.height,this->hidden->bitmap);
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parents:
diff changeset
236
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parents:
diff changeset
237 /* Set up the new mode framebuffer */
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parents:
diff changeset
238 current->flags = 0;
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parents:
diff changeset
239 current->w = this->hidden->shm.width;
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parents:
diff changeset
240 current->h = this->hidden->shm.height;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 current->pitch = this->hidden->shm.pitch;
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parents:
diff changeset
242
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parents:
diff changeset
243 /* Set up pixel format */
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parents:
diff changeset
244 current->format->BitsPerPixel = this->hidden->shm.bpp;
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parents:
diff changeset
245 current->format->BytesPerPixel = this->hidden->shm.bpp >> 3;
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parents:
diff changeset
246 if (this->hidden->shm.bpp & 7)
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parents:
diff changeset
247 current->format->BytesPerPixel++;
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parents:
diff changeset
248 current->format->palette = NULL;
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parents:
diff changeset
249 current->format->Rmask = this->hidden->shm.red_mask;
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parents:
diff changeset
250 current->format->Gmask = this->hidden->shm.green_mask;
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parents:
diff changeset
251 current->format->Bmask = this->hidden->shm.blue_mask;
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parents:
diff changeset
252 current->format->Amask = this->hidden->shm.alpha_mask;
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parents:
diff changeset
253 current->format->Rshift = this->hidden->shm.red_shift;
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parents:
diff changeset
254 current->format->Gshift = this->hidden->shm.green_shift;
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parents:
diff changeset
255 current->format->Bshift = this->hidden->shm.blue_shift;
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parents:
diff changeset
256 current->format->Ashift = this->hidden->shm.alpha_shift;
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parents:
diff changeset
257 current->format->Rloss = 8 - this->hidden->shm.red_length;
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parents:
diff changeset
258 current->format->Gloss = 8 - this->hidden->shm.green_length;
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parents:
diff changeset
259 current->format->Bloss = 8 - this->hidden->shm.blue_length;
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parents:
diff changeset
260 current->format->Aloss = 8 - this->hidden->shm.alpha_length;
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parents:
diff changeset
261
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parents:
diff changeset
262 /* Draw the app */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 pgUpdate();
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parents:
diff changeset
264
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parents:
diff changeset
265 /* We're done */
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parents:
diff changeset
266 return(current);
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parents:
diff changeset
267 }
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parents:
diff changeset
268
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parents:
diff changeset
269 /* We don't actually allow hardware surfaces other than the main one */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 static int PG_AllocHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
271 {
706de3956894 Added initial support for PicoGUI (thanks Micah!)
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parents:
diff changeset
272 return(-1);
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parents:
diff changeset
273 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 static void PG_FreeHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
275 {
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parents:
diff changeset
276 return;
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parents:
diff changeset
277 }
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parents:
diff changeset
278
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 /* We need to wait for vertical retrace on page flipped displays */
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Sam Lantinga <slouken@libsdl.org>
parents:
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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 }