Mercurial > sdl-ios-xcode

annotate src/video/picogui/SDL_pgvideo.c @ 4249:429c8dd3175d SDL-1.2

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Fixed bug #713 Don't clamp the mouse coordinates to the video surface size, instead clamp them to the last known window size. This allows users to get the correct mouse coordinates even if they don't call SDL_SetVideoMode() in response to an SDL_VIDEORESIZE event (used as a hack to retain the OpenGL context on Windows and Linux after a window resize)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 27 Sep 2009 05:18:43 +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 }