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annotate src/video/directfb/SDL_DirectFB_mouse.c @ 2814:e841aa93e6be

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author Sam Lantinga <slouken@libsdl.org>
date Mon, 01 Dec 2008 00:07:45 +0000
parents 140a7edcf2bd
children 483f85e35a1a
rev   line source
2226
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1 /*
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2 SDL - Simple DirectMedia Layer
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Sam Lantinga <slouken@libsdl.org>
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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 #include "SDL_config.h"
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23
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24 #include "SDL_DirectFB_video.h"
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25
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26 #include "../SDL_sysvideo.h"
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27 #include "../../events/SDL_mouse_c.h"
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28
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29 static SDL_Cursor *DirectFB_CreateCursor(SDL_Surface * surface, int hot_x,
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30 int hot_y);
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31 static int DirectFB_ShowCursor(SDL_Cursor * cursor);
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32 static void DirectFB_MoveCursor(SDL_Cursor * cursor);
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33 static void DirectFB_FreeCursor(SDL_Cursor * cursor);
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34 static void DirectFB_WarpMouse(SDL_Mouse * mouse, SDL_WindowID windowID,
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35 int x, int y);
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36 static void DirectFB_FreeMouse(SDL_Mouse * mouse);
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37
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38 void
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39 DirectFB_InitMouse(_THIS)
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40 {
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41 SDL_DFB_DEVICEDATA(_this);
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42 SDL_Mouse mouse;
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43
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44 SDL_zero(mouse);
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45 mouse.CreateCursor = DirectFB_CreateCursor;
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46 mouse.ShowCursor = DirectFB_ShowCursor;
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47 mouse.MoveCursor = DirectFB_MoveCursor;
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48 mouse.FreeCursor = DirectFB_FreeCursor;
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49 mouse.WarpMouse = DirectFB_WarpMouse;
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50 mouse.FreeMouse = DirectFB_FreeMouse;
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51 mouse.cursor_shown = 1;
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52 devdata->mouse = SDL_AddMouse(&mouse, -1, "Mouse", 0, 0, 1);
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53 }
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54
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55 void
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56 DirectFB_QuitMouse(_THIS)
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57 {
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58 SDL_DFB_DEVICEDATA(_this);
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59
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60 SDL_DelMouse(devdata->mouse);
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61 }
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62
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63 /* Create a cursor from a surface */
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64 static SDL_Cursor *
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65 DirectFB_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)
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66 {
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67 SDL_VideoDevice *dev = SDL_GetVideoDevice();
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68
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69 SDL_DFB_DEVICEDATA(dev);
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70 DFB_CursorData *curdata;
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71 DFBResult ret;
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72 DFBSurfaceDescription dsc;
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73 SDL_Cursor *cursor;
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74 Uint32 *dest;
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75 Uint32 *p;
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76 int pitch, i;
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77
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78 SDL_DFB_CALLOC(cursor, 1, sizeof(*cursor));
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79 SDL_DFB_CALLOC(curdata, 1, sizeof(*curdata));
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80
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81 dsc.flags =
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82 DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
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83 dsc.caps = DSCAPS_VIDEOONLY;
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84 dsc.width = surface->w;
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85 dsc.height = surface->h;
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86 dsc.pixelformat = DSPF_ARGB;
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87
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88 SDL_DFB_CHECKERR(devdata->dfb->
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89 CreateSurface(devdata->dfb, &dsc, &curdata->surf));
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90 curdata->hotx = hot_x;
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91 curdata->hoty = hot_y;
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92 cursor->driverdata = curdata;
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93
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94 SDL_DFB_CHECKERR(curdata->surf->
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95 Lock(curdata->surf, DSLF_WRITE, (void *) &dest, &pitch));
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96
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97 /* Relies on the fact that this is only called with ARGB surface. */
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98 p = surface->pixels;
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99 for (i = 0; i < surface->h; i++)
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100 memcpy((char *) dest + i * pitch, (char *) p + i * surface->pitch,
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101 4 * surface->w);
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102
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103 curdata->surf->Unlock(curdata->surf);
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104 return cursor;
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105 error:
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106 return NULL;
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107 }
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108
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109 /* Show the specified cursor, or hide if cursor is NULL */
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110 static int
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111 DirectFB_ShowCursor(SDL_Cursor * cursor)
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112 {
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113 SDL_DFB_CURSORDATA(cursor);
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114 DFBResult ret;
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115 SDL_WindowID wid;
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116
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117 wid = SDL_GetFocusWindow();
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118 if (wid < 0)
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119 return -1;
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120 else {
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121 SDL_Window *window = SDL_GetWindowFromID(wid);
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122 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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123
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124 if (display) {
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125 DFB_DisplayData *dispdata =
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126 (DFB_DisplayData *) display->driverdata;
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127 DFB_WindowData *windata = (DFB_WindowData *) window->driverdata;
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128
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129 if (cursor)
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130 SDL_DFB_CHECKERR(windata->window->
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131 SetCursorShape(windata->window,
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132 curdata->surf, curdata->hotx,
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133 curdata->hoty));
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134
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135 /* fprintf(stdout, "Cursor is %s\n", cursor ? "on" : "off"); */
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136 SDL_DFB_CHECKERR(dispdata->layer->
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137 SetCooperativeLevel(dispdata->layer,
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138 DLSCL_ADMINISTRATIVE));
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139 SDL_DFB_CHECKERR(dispdata->layer->
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140 SetCursorOpacity(dispdata->layer,
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141 cursor ? 0xC0 : 0x00));
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142 SDL_DFB_CHECKERR(dispdata->layer->
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143 SetCooperativeLevel(dispdata->layer,
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144 DLSCL_SHARED));
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145 }
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146 }
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147
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148 return 0;
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149 error:
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150 return -1;
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151 }
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152
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153 /* This is called when a mouse motion event occurs */
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154 static void
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155 DirectFB_MoveCursor(SDL_Cursor * cursor)
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156 {
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157
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158 }
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159
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160 /* Free a window manager cursor */
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161 static void
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162 DirectFB_FreeCursor(SDL_Cursor * cursor)
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163 {
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164 SDL_DFB_CURSORDATA(cursor);
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165
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166 SDL_DFB_RELEASE(curdata->surf);
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167 SDL_DFB_FREE(cursor->driverdata);
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168 SDL_DFB_FREE(cursor);
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169 }
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170
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171 /* Warp the mouse to (x,y) */
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172 static void
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173 DirectFB_WarpMouse(SDL_Mouse * mouse, SDL_WindowID windowID, int x, int y)
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174 {
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175 SDL_Window *window = SDL_GetWindowFromID(windowID);
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176 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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177 DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
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178 DFB_WindowData *windata = (DFB_WindowData *) window->driverdata;
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179 DFBResult ret;
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180 int cx, cy;
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181
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182 SDL_DFB_CHECKERR(windata->window->GetPosition(windata->window, &cx, &cy));
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183 SDL_DFB_CHECKERR(dispdata->layer->
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184 WarpCursor(dispdata->layer, cx + x, cy + y));
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185
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186 error:
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187 return;
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188 }
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189
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190 /* Free the mouse when it's time */
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191 static void
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192 DirectFB_FreeMouse(SDL_Mouse * mouse)
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193 {
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194 /* nothing yet */
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195 }
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196
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197 /* vi: set ts=4 sw=4 expandtab: */