Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11mouse.c @ 1698:412149a1c756 SDL-1.3
Renamed, per Mike's comment on bug #157
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 21 Jun 2006 08:25:17 +0000 |
| parents | 4da1ee79c9af |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #include <X11/Xlib.h> | |
| 25 #include <X11/Xutil.h> | |
| 26 | |
| 27 #include "SDL_mouse.h" | |
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28 #include "../../events/SDL_events_c.h" |
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29 #include "../SDL_cursor_c.h" |
| 0 | 30 #include "SDL_x11dga_c.h" |
| 31 #include "SDL_x11mouse_c.h" | |
| 32 | |
| 33 | |
| 34 /* The implementation dependent data for the window manager cursor */ | |
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35 struct WMcursor |
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36 { |
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37 Cursor x_cursor; |
| 0 | 38 }; |
| 39 | |
| 40 | |
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41 void |
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42 X11_FreeWMCursor(_THIS, WMcursor * cursor) |
| 0 | 43 { |
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44 if (SDL_Display != NULL) { |
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45 SDL_Lock_EventThread(); |
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46 XFreeCursor(SDL_Display, cursor->x_cursor); |
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47 XSync(SDL_Display, False); |
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48 SDL_Unlock_EventThread(); |
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49 } |
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50 SDL_free(cursor); |
| 0 | 51 } |
| 52 | |
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53 WMcursor * |
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54 X11_CreateWMCursor(_THIS, |
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55 Uint8 * data, Uint8 * mask, int w, int h, int hot_x, |
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56 int hot_y) |
| 0 | 57 { |
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58 WMcursor *cursor; |
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59 XGCValues GCvalues; |
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60 GC GCcursor; |
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61 XImage *data_image, *mask_image; |
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62 Pixmap data_pixmap, mask_pixmap; |
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63 int clen, i; |
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64 char *x_data, *x_mask; |
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65 static XColor black = { 0, 0, 0, 0 }; |
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66 static XColor white = { 0xffff, 0xffff, 0xffff, 0xffff }; |
| 0 | 67 |
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68 /* Allocate the cursor memory */ |
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69 cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor)); |
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70 if (cursor == NULL) { |
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71 SDL_OutOfMemory(); |
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72 return (NULL); |
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73 } |
| 0 | 74 |
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75 /* Mix the mask and the data */ |
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76 clen = (w / 8) * h; |
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77 x_data = (char *) SDL_malloc(clen); |
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78 if (x_data == NULL) { |
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79 SDL_free(cursor); |
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80 SDL_OutOfMemory(); |
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81 return (NULL); |
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82 } |
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83 x_mask = (char *) SDL_malloc(clen); |
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84 if (x_mask == NULL) { |
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85 SDL_free(cursor); |
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86 SDL_free(x_data); |
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87 SDL_OutOfMemory(); |
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88 return (NULL); |
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89 } |
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90 for (i = 0; i < clen; ++i) { |
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91 /* The mask is OR'd with the data to turn inverted color |
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92 pixels black since inverted color cursors aren't supported |
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93 under X11. |
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94 */ |
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95 x_mask[i] = data[i] | mask[i]; |
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96 x_data[i] = data[i]; |
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97 } |
| 0 | 98 |
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99 /* Prevent the event thread from running while we use the X server */ |
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100 SDL_Lock_EventThread(); |
| 0 | 101 |
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102 /* Create the data image */ |
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103 data_image = XCreateImage(SDL_Display, |
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104 DefaultVisual(SDL_Display, SDL_Screen), |
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105 1, XYBitmap, 0, x_data, w, h, 8, w / 8); |
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106 data_image->byte_order = MSBFirst; |
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107 data_image->bitmap_bit_order = MSBFirst; |
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108 data_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
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109 |
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110 /* Create the data mask */ |
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111 mask_image = XCreateImage(SDL_Display, |
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112 DefaultVisual(SDL_Display, SDL_Screen), |
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113 1, XYBitmap, 0, x_mask, w, h, 8, w / 8); |
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114 mask_image->byte_order = MSBFirst; |
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115 mask_image->bitmap_bit_order = MSBFirst; |
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116 mask_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
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118 /* Create the graphics context */ |
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119 GCvalues.function = GXcopy; |
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120 GCvalues.foreground = ~0; |
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121 GCvalues.background = 0; |
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122 GCvalues.plane_mask = AllPlanes; |
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123 GCcursor = XCreateGC(SDL_Display, data_pixmap, |
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124 (GCFunction | GCForeground | GCBackground | |
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125 GCPlaneMask), &GCvalues); |
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127 /* Blit the images to the pixmaps */ |
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128 XPutImage(SDL_Display, data_pixmap, GCcursor, data_image, |
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129 0, 0, 0, 0, w, h); |
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130 XPutImage(SDL_Display, mask_pixmap, GCcursor, mask_image, |
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131 0, 0, 0, 0, w, h); |
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132 XFreeGC(SDL_Display, GCcursor); |
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133 /* These free the x_data and x_mask memory pointers */ |
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134 XDestroyImage(data_image); |
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135 XDestroyImage(mask_image); |
| 0 | 136 |
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137 /* Create the cursor */ |
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138 cursor->x_cursor = XCreatePixmapCursor(SDL_Display, data_pixmap, |
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139 mask_pixmap, &black, &white, |
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140 hot_x, hot_y); |
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141 XFreePixmap(SDL_Display, data_pixmap); |
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142 XFreePixmap(SDL_Display, mask_pixmap); |
| 0 | 143 |
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144 /* Release the event thread */ |
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145 XSync(SDL_Display, False); |
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146 SDL_Unlock_EventThread(); |
| 0 | 147 |
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148 return (cursor); |
| 0 | 149 } |
| 150 | |
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151 int |
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152 X11_ShowWMCursor(_THIS, WMcursor * cursor) |
| 0 | 153 { |
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154 /* Don't do anything if the display is gone */ |
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155 if (SDL_Display == NULL) { |
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156 return (0); |
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157 } |
| 0 | 158 |
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159 /* Set the X11 cursor cursor, or blank if cursor is NULL */ |
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160 if (SDL_Window) { |
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161 SDL_Lock_EventThread(); |
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162 if (cursor == NULL) { |
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163 if (SDL_BlankCursor != NULL) { |
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164 XDefineCursor(SDL_Display, SDL_Window, |
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165 SDL_BlankCursor->x_cursor); |
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166 } |
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167 } else { |
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168 XDefineCursor(SDL_Display, SDL_Window, cursor->x_cursor); |
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169 } |
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170 XSync(SDL_Display, False); |
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171 SDL_Unlock_EventThread(); |
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172 } |
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173 return (1); |
| 0 | 174 } |
| 175 | |
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176 void |
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177 X11_WarpWMCursor(_THIS, Uint16 x, Uint16 y) |
| 0 | 178 { |
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179 if (using_dga & DGA_MOUSE) { |
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180 SDL_PrivateMouseMotion(0, 0, x, y); |
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181 } else if (mouse_relative) { |
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182 /* RJR: March 28, 2000 |
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183 leave physical cursor at center of screen if |
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184 mouse hidden and grabbed */ |
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185 SDL_PrivateMouseMotion(0, 0, x, y); |
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186 } else { |
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187 SDL_Lock_EventThread(); |
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188 XWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, x, y); |
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189 XSync(SDL_Display, False); |
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190 SDL_Unlock_EventThread(); |
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191 } |
| 0 | 192 } |
| 193 | |
| 194 /* Sets the mouse acceleration from a string of the form: | |
| 195 2/1/0 | |
| 196 The first number is the numerator, followed by the acceleration | |
| 197 denumenator and threshold. | |
| 198 */ | |
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199 static void |
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200 SetMouseAccel(_THIS, const char *accel_param) |
| 0 | 201 { |
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202 int i; |
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203 size_t len; |
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204 int accel_value[3]; |
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205 char *mouse_param, *mouse_param_buf, *pin; |
| 0 | 206 |
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207 len = SDL_strlen(accel_param) + 1; |
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208 mouse_param_buf = SDL_stack_alloc(char, len); |
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209 if (!mouse_param_buf) { |
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210 return; |
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211 } |
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212 SDL_strlcpy(mouse_param_buf, accel_param, len); |
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213 mouse_param = mouse_param_buf; |
| 0 | 214 |
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215 for (i = 0; (i < 3) && mouse_param; ++i) { |
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216 pin = SDL_strchr(mouse_param, '/'); |
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217 if (pin) { |
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218 *pin = '\0'; |
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219 } |
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220 accel_value[i] = atoi(mouse_param); |
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221 if (pin) { |
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222 mouse_param = pin + 1; |
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223 } else { |
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224 mouse_param = NULL; |
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225 } |
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226 } |
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227 if (mouse_param_buf) { |
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228 XChangePointerControl(SDL_Display, True, True, |
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229 accel_value[0], accel_value[1], accel_value[2]); |
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230 SDL_free(mouse_param_buf); |
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231 } |
| 0 | 232 } |
| 233 | |
| 234 /* Check to see if we need to enter or leave mouse relative mode */ | |
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235 void |
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236 X11_CheckMouseModeNoLock(_THIS) |
| 0 | 237 { |
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238 const Uint8 full_focus = |
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239 (SDL_APPACTIVE | SDL_APPINPUTFOCUS | SDL_APPMOUSEFOCUS); |
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240 char *env_override; |
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241 int enable_relative = 1; |
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242 |
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243 /* Allow the user to override the relative mouse mode. |
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244 They almost never want to do this, as it seriously affects |
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245 applications that rely on continuous relative mouse motion. |
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246 */ |
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247 env_override = SDL_getenv("SDL_MOUSE_RELATIVE"); |
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248 if (env_override) { |
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249 enable_relative = atoi(env_override); |
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250 } |
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251 |
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252 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
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253 if (enable_relative && |
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254 !(SDL_cursorstate & CURSOR_VISIBLE) && |
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255 (SDL_CurrentWindow.input_grab != SDL_GRAB_OFF) && |
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256 (SDL_GetAppState() & full_focus) == full_focus) { |
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257 if (!mouse_relative) { |
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258 X11_EnableDGAMouse(this); |
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259 if (!(using_dga & DGA_MOUSE)) { |
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260 char *xmouse_accel; |
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262 SDL_GetMouseState(&mouse_last.x, &mouse_last.y); |
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263 /* Use as raw mouse mickeys as possible */ |
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264 XGetPointerControl(SDL_Display, |
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265 &mouse_accel.numerator, |
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266 &mouse_accel.denominator, |
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267 &mouse_accel.threshold); |
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268 xmouse_accel = SDL_getenv("SDL_VIDEO_X11_MOUSEACCEL"); |
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269 if (xmouse_accel) { |
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270 SetMouseAccel(this, xmouse_accel); |
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271 } |
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272 } |
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273 mouse_relative = 1; |
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274 } |
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275 } else { |
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276 if (mouse_relative) { |
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277 if (using_dga & DGA_MOUSE) { |
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278 X11_DisableDGAMouse(this); |
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279 } else { |
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280 XChangePointerControl(SDL_Display, True, True, |
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281 mouse_accel.numerator, |
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282 mouse_accel.denominator, |
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283 mouse_accel.threshold); |
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284 } |
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285 mouse_relative = 0; |
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286 } |
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287 } |
| 0 | 288 } |
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289 void |
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290 X11_CheckMouseMode(_THIS) |
| 0 | 291 { |
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292 SDL_Lock_EventThread(); |
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293 X11_CheckMouseModeNoLock(this); |
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294 SDL_Unlock_EventThread(); |
| 0 | 295 } |
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296 |
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297 /* vi: set ts=4 sw=4 expandtab: */ |