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annotate src/video/x11/SDL_x11mouse.c @ 4614:a17de6a8f796

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Code cleanup.
author Sunny Sachanandani <sunnysachanandani@gmail.com>
date Thu, 22 Jul 2010 12:08:33 +0530
parents f7b03b6838cb
children 3e69e077cb95
rev   line source
1950
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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 #include "SDL_x11video.h"
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24 #include "SDL_x11mouse.h"
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25 #include "../../events/SDL_mouse_c.h"
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26
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27 #if SDL_VIDEO_DRIVER_X11_XINPUT
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28 static void
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29 X11_FreeMouse(SDL_Mouse * mouse)
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30 {
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31 X11_MouseData *data = (X11_MouseData *) mouse->driverdata;
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32
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33 if (data) {
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34 XCloseDevice(data->display, data->device);
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35 SDL_free(data);
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36 }
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37 }
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38 #endif
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39
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40 void
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41 X11_InitMouse(_THIS)
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42 {
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43 SDL_Mouse mouse;
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44 #if SDL_VIDEO_DRIVER_X11_XINPUT
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45 Display *display = ((SDL_VideoData *) _this->driverdata)->display;
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46 X11_MouseData *data;
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47 int i, j, n;
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48 XDeviceInfo *DevList;
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49 XAnyClassPtr deviceClass;
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50 int event_code;
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51 XEventClass xEvent;
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52 #endif
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53 int num_mice = 0;
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54
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55 SDL_zero(mouse);
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56
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57 #if SDL_VIDEO_DRIVER_X11_XINPUT
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58 /* we're getting the list of input devices */
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59 n = 0;
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60 if (SDL_X11_HAVE_XINPUT) {
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61 DevList = XListInputDevices(display, &n);
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62 }
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63
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64 /* we're aquiring valuators: mice, tablets, etc. */
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65 for (i = 0; i < n; ++i) {
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66 /* if it's the core pointer or core keyborard we don't want it */
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67 if ((DevList[i].use != IsXPointer && DevList[i].use != IsXKeyboard)) {
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68 /* we have to check all of the device classes */
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69 deviceClass = DevList[i].inputclassinfo;
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70 for (j = 0; j < DevList[i].num_classes; ++j) {
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71 if (deviceClass->class == ValuatorClass) { /* bingo ;) */
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72 XValuatorInfo *valInfo;
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73
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74 data = (X11_MouseData *) SDL_calloc(1, sizeof(*data));
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75 if (!data) {
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76 continue;
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77 }
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78 data->display = display;
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79 data->device = XOpenDevice(display, DevList[i].id);
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80
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81 /* motion events */
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82 DeviceMotionNotify(data->device, event_code, xEvent);
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83 if (xEvent) {
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84 data->xevents[data->num_xevents++] = xEvent;
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85 data->motion = event_code;
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86 }
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87
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88 /* button events */
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89 DeviceButtonPress(data->device, event_code, xEvent);
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90 if (xEvent) {
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91 data->xevents[data->num_xevents++] = xEvent;
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92 data->button_pressed = event_code;
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93 }
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94 DeviceButtonRelease(data->device, event_code, xEvent);
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95 if (xEvent) {
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96 data->xevents[data->num_xevents++] = xEvent;
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97 data->button_released = event_code;
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98 }
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99
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100 /* proximity events */
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101 ProximityIn(data->device, event_code, xEvent);
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102 if (xEvent) {
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103 data->xevents[data->num_xevents++] = xEvent;
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104 data->proximity_in = event_code;
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105 }
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106 ProximityOut(data->device, event_code, xEvent);
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107 if (xEvent) {
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108 data->xevents[data->num_xevents++] = xEvent;
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109 data->proximity_out = event_code;
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110 }
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111
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112 SDL_zero(mouse);
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113 mouse.id = DevList[i].id;
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114 mouse.FreeMouse = X11_FreeMouse;
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115 mouse.driverdata = data;
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116
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117 /* lets get the device parameters */
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118 valInfo = (XValuatorInfo *) deviceClass;
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119 /* if the device reports pressure, lets check it parameteres */
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120 if (valInfo->num_axes > 2) {
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121 SDL_AddMouse(&mouse, DevList[i].name,
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122 valInfo->axes[2].max_value,
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123 valInfo->axes[2].min_value, 1);
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124 } else {
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125 SDL_AddMouse(&mouse, DevList[i].name, 0, 0, 1);
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126 }
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127 #ifndef IsXExtensionPointer
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128 #define IsXExtensionPointer 4
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129 #endif
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130 if (DevList[i].use == IsXExtensionPointer) {
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131 ++num_mice;
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132 }
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133 break;
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134 }
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135 /* if it's not class we're interested in, lets go further */
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136 deviceClass =
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137 (XAnyClassPtr) ((char *) deviceClass +
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138 deviceClass->length);
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139 }
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140 }
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141 }
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142 XFreeDeviceList(DevList);
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143 #endif
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144
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145 if (num_mice == 0) {
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146 SDL_zero(mouse);
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147 SDL_AddMouse(&mouse, "CorePointer", 0, 0, 1);
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148 }
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149 }
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150
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151 void
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152 X11_QuitMouse(_THIS)
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153 {
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154 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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155
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156 /* !!! FIXME: use XCloseDevice()? Or maybe handle under SDL_MouseQuit()? */
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157
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158 /* let's delete all of the mice */
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159 SDL_MouseQuit();
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160 }
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161
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162 /* vi: set ts=4 sw=4 expandtab: */