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1 #include <stdio.h>
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2 #include <X11/Xlib.h>
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3 #include <X11/Xutil.h>
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4 #include "redraw_man.h"
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5 #include "mb_timer.h"
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6
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7
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8 /*! \brief Dispatch all events in the queue.
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9 */
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10 static void handle_x_event(Display *display,
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11 redraw_man_t *rdman,
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12 mb_tman_t *tman) {
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13 XEvent evt;
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14 XMotionEvent *mevt;
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15 mouse_event_t mouse_event;
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16 shape_t *shape;
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17 subject_t *subject;
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18 ob_factory_t *factory;
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19 co_aix x, y;
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20 int in_stroke;
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21 int but;
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22 int r;
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23
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24 while(XEventsQueued(display, QueuedAfterReading) > 0) {
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25 r = XNextEvent(display, &evt);
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26 if(r == -1)
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27 break;
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28
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29 switch(evt.type) {
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30 case MotionNotify:
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31 mevt = (XMotionEvent *)&evt;
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32 x = mevt->x;
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33 y = mevt->y;
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34 but = 0;
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35 if(mevt->state & Button1Mask)
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36 but |= MOUSE_BUT1;
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37 if(mevt->state & Button2Mask)
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38 but |= MOUSE_BUT2;
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39 if(mevt->state & Button3Mask)
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40 but |= MOUSE_BUT3;
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41
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42 mouse_event.event.type = EVT_MOUSE_MOVE;
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43 mouse_event.x = x;
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44 mouse_event.y = y;
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45 mouse_event.button = but;
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46
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47 shape = find_shape_at_pos(rdman, x, y,
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48 &in_stroke);
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49 subject = sh_get_mouse_event_subject(shape);
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50 factory = rdman_get_ob_factory(rdman);
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51
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52 subject_notify(factory, subject, (event_t *)&mouse_event);
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53 break;
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54
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55 case Expose:
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56 rdman_redraw_area(rdman, evt.xexpose.x, evt.xexpose.y,
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57 evt.xexpose.width, evt.xexpose.height);
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58 break;
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59 }
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60 }
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61 rdman_redraw_changed(rdman);
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62 XFlush(display);
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63 }
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64
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65 /*! \brief Handle connection coming data and timeout of timers.
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66 */
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67 void X_handle_connection(Display *display,
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68 redraw_man_t *rdman,
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69 mb_tman_t *tman) {
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70 int fd;
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71 mb_timeval_t now, tmo;
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72 struct timeval tv;
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73 fd_set rfds;
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74 int nfds;
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75 int r;
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76
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77 fd = XConnectionNumber(display);
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78 nfds = fd + 1;
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79 while(1) {
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80 FD_ZERO(&rfds);
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81 FD_SET(fd, &rfds);
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82
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83 get_now(&now);
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84 r = mb_tman_next_timeout(tman, &now, &tmo);
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85
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86 if(r == 0) {
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87 tv.tv_sec = MB_TIMEVAL_SEC(&tmo);
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88 tv.tv_usec = MB_TIMEVAL_USEC(&tmo);
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89 r = select(nfds, &rfds, NULL, NULL, &tv);
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90 } else
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91 r = select(nfds, &rfds, NULL, NULL, NULL);
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92
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93 if(r == -1) {
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94 perror("select");
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95 break;
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96 }
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97
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98 if(r == 0) {
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99 get_now(&now);
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100 mb_tman_handle_timeout(tman, &now);
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101 rdman_redraw_changed(rdman);
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102 XFlush(display);
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103 } else if(FD_ISSET(fd, &rfds)){
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104 handle_x_event(display, rdman, tman);
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105 }
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106 }
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107 }
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