annotate src/video/dga/SDL_dgaevents.c @ 1327:d12a63a8d95a

Resolved bug #130 Use XFilterEvent() to handle dead-key composition under X11 Cleaned up the code in preparation for 1.3 API changes
author Sam Lantinga <slouken@libsdl.org>
date Sat, 04 Feb 2006 08:35:11 +0000
parents c9b51268668f
children 19418e4422cb
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1 /*
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2 SDL - Simple DirectMedia Layer
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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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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /* Handle the event stream, converting DGA events into SDL events */
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24
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25 #include <stdio.h>
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26 #include <X11/Xlib.h>
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27 #include <Xext/extensions/xf86dga.h>
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28
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29 #include "SDL_sysvideo.h"
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30 #include "SDL_events_c.h"
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31 #include "SDL_dgavideo.h"
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32 #include "SDL_dgaevents_c.h"
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33
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34 /* get function pointers... */
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35 #include "../x11/SDL_x11dyn.h"
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36
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37 /* Heheh we're using X11 event code */
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38 extern int X11_Pending(Display *display);
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39 extern void X11_InitKeymap(void);
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40 extern SDLKey X11_TranslateKeycode(Display *display, KeyCode kc);
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41
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42 static int DGA_DispatchEvent(_THIS)
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43 {
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44 int posted;
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45 SDL_NAME(XDGAEvent) xevent;
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46
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47 pXNextEvent(DGA_Display, (XEvent *)&xevent);
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48
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49 posted = 0;
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50 xevent.type -= DGA_event_base;
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51 switch (xevent.type) {
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52
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53 /* Mouse motion? */
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54 case MotionNotify: {
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55 if ( SDL_VideoSurface ) {
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56 posted = SDL_PrivateMouseMotion(0, 1,
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57 xevent.xmotion.dx, xevent.xmotion.dy);
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58 }
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59 }
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60 break;
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61
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62 /* Mouse button press? */
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63 case ButtonPress: {
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64 posted = SDL_PrivateMouseButton(SDL_PRESSED,
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65 xevent.xbutton.button, 0, 0);
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66 }
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67 break;
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68
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69 /* Mouse button release? */
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70 case ButtonRelease: {
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71 posted = SDL_PrivateMouseButton(SDL_RELEASED,
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72 xevent.xbutton.button, 0, 0);
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73 }
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74 break;
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75
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76 /* Key press? */
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77 case KeyPress: {
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78 SDL_keysym keysym;
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79 KeyCode keycode;
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80 XKeyEvent xkey;
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81
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82 SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);
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83 keycode = xkey.keycode;
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84 #ifdef DEBUG_XEVENTS
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85 printf("KeyPress (X11 keycode = 0x%X)\n", xkey.keycode);
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86 #endif
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87 /* Get the translated SDL virtual keysym */
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88 keysym.scancode = keycode;
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89 keysym.sym = X11_TranslateKeycode(DGA_Display, keycode);
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90 keysym.mod = KMOD_NONE;
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91 keysym.unicode = 0;
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92
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93 /* Look up the translated value for the key event */
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94 if ( SDL_TranslateUNICODE ) {
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95 static XComposeStatus state;
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96 char keybuf[32];
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97
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98 if ( pXLookupString(&xkey, keybuf, sizeof(keybuf), NULL, &state) ) {
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99 /*
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100 * FIXME: XLookupString() may yield more than one
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101 * character, so we need a mechanism to allow for
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102 * this (perhaps null keypress events with a
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103 * unicode value)
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104 */
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105 keysym.unicode = (Uint8)keybuf[0];
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106 }
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107 }
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108 posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym);
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109 }
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110 break;
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111
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112 /* Key release? */
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113 case KeyRelease: {
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114 SDL_keysym keysym;
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115 KeyCode keycode;
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116 XKeyEvent xkey;
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117
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118 SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);
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119 keycode = xkey.keycode;
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120 #ifdef DEBUG_XEVENTS
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121 printf("KeyRelease (X11 keycode = 0x%X)\n", xkey.keycode);
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122 #endif
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123 /* Get the translated SDL virtual keysym */
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124 keysym.scancode = keycode;
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125 keysym.sym = X11_TranslateKeycode(DGA_Display, keycode);
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126 keysym.mod = KMOD_NONE;
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127 keysym.unicode = 0;
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128 posted = SDL_PrivateKeyboard(SDL_RELEASED, &keysym);
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129 }
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130 break;
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131
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132 break;
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133
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134 }
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135 return(posted);
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136 }
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137
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138 void DGA_PumpEvents(_THIS)
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139 {
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140 /* Keep processing pending events */
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141 LOCK_DISPLAY();
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142 while ( X11_Pending(DGA_Display) ) {
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143 DGA_DispatchEvent(this);
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144 }
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145 UNLOCK_DISPLAY();
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146 }
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147
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148 void DGA_InitOSKeymap(_THIS)
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149 {
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150 X11_InitKeymap();
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151 }
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152