annotate nodejs/X_supp_njs.c @ 858:ed49dc0a26f1 abs_n_rel_center

Move lightbar to correct position when it being up
author Thinker K.F. Li <thinker@codemud.net>
date Mon, 20 Sep 2010 22:43:44 +0800
parents 586e50f82c1f
children c18058fb48ee
rev   line source
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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2 // vim: sw=4:ts=8:sts=4
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3 /*! \brief Implement X11 backend for nodejs plugin.
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4 *
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5 * Since nodejs use libev to handle event loops, part of X11 backend
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6 * code can not be used directly. The part of code should be rewrote.
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7 * The part is about
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8 */
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9 #include <stdio.h>
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10 #include <X11/Xlib.h>
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11 #include <X11/Xutil.h>
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12 #include <ev.h>
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13 #include "mb_X_supp.h"
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14 #include "mb_tools.h"
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15 #include "X_supp_njs.h"
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16
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17 #ifndef ASSERT
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18 #define ASSERT(x)
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19 #endif
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20
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21 static void timer_cb(EV_P_ ev_timer *tmwatcher, int revent);
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22
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23 /*! \brief Register next timeout with libev.
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24 */
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25 static void
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26 set_next_timeout(njs_runtime_t *rt) {
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27 mb_tman_t *tman;
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28 mb_timeval_t now, tmo;
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29 ev_tstamp tout;
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30 int r;
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31
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32 tman = X_MB_tman(rt->xrt);
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33 get_now(&now);
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34 r = mb_tman_next_timeout(tman, &now, &tmo);
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35 if(r == 0) {
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36 MB_TIMEVAL_DIFF(&tmo, &now);
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37 tout = (ev_tstamp)MB_TIMEVAL_SEC(&tmo) +
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38 (ev_tstamp)MB_TIMEVAL_USEC(&tmo) / 1000000;
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39 ev_timer_init(&rt->tmwatcher, timer_cb, tout, 0);
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40 ev_timer_start(&rt->tmwatcher);
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41 rt->enable_timer = 1;
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42 } else
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43 rt->enable_timer = 0;
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44 }
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45
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46 static void
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47 x_conn_cb(EV_P_ ev_io *iowatcher, int revent) {
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48 njs_runtime_t *rt = MEM2OBJ(iowatcher, njs_runtime_t, iowatcher);
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49 redraw_man_t *rdman;
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50 extern void _X_MB_handle_x_event_for_nodejs(void *rt);
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51
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52 rdman = X_MB_rdman(rt->xrt);
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53 _X_MB_handle_x_event_for_nodejs(rt->xrt);
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54 rdman_redraw_changed(rdman);
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55
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56 if(rt->enable_timer == 0) /* no installed timeout */
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57 set_next_timeout(rt);
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58 }
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59
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60 static void
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61 timer_cb(EV_P_ ev_timer *tmwatcher, int revent) {
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62 njs_runtime_t *rt = MEM2OBJ(tmwatcher, njs_runtime_t, tmwatcher);
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63 mb_tman_t *tman;
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64 redraw_man_t *rdman;
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65 mb_timeval_t now;
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66 extern int _X_MB_flush_x_conn_for_nodejs(void *rt);
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67
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68 tman = X_MB_tman(rt->xrt);
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69 get_now(&now);
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70 mb_tman_handle_timeout(tman, &now);
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71
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72 rdman = X_MB_rdman(rt->xrt);
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73 rdman_redraw_changed(rdman);
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74 _X_MB_flush_x_conn_for_nodejs(rt->xrt);
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75
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76 set_next_timeout(rt);
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77 }
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78
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79 /*! \brief Handle connection coming data and timeout of timers.
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80 *
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81 * \param rt is a runtime object for X.
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82 */
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83 void
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84 X_njs_MB_init_handle_connection(njs_runtime_t *rt) {
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85 void *xrt = rt->xrt;
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86 int fd;
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87 extern int _X_MB_get_x_conn_for_nodejs(void *rt);
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88
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89 /*
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90 * Setup watcher for X connection.
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91 */
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92 fd = _X_MB_get_x_conn_for_nodejs(xrt);
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93 ev_io_init(&rt->iowatcher, x_conn_cb, fd, EV_READ);
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94 ev_io_start(&rt->iowatcher);
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95 rt->enable_io = 1;
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96
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97 set_next_timeout(rt);
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98 }
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99
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100 /*! \brief Free njs_runtime_t.
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101 */
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102 void
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103 X_njs_MB_free(njs_runtime_t *rt) {
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104 /*
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105 * stop IO and timer watcher
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106 */
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107 if(rt->enable_io)
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108 ev_io_stop(&rt->iowatcher);
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109 if(rt->enable_timer)
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110 ev_timer_stop(&rt->tmwatcher);
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111
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112 X_MB_free(rt->xrt);
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113 free(rt);
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114 }
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115
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116 int
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117 X_njs_MB_flush(njs_runtime_t *rt) {
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118 void *xrt = rt->xrt;
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119 int r;
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120 extern int _X_MB_flush_x_conn_for_nodejs(void *rt);
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121
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122 _X_MB_flush_x_conn_for_nodejs(xrt);
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123
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124 return r;
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125 }
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126
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127 njs_runtime_t *
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128 X_njs_MB_new(char *display_name, int w, int h) {
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129 njs_runtime_t *rt;
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130 void *xrt;
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131
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132 rt = (njs_runtime_t *)malloc(sizeof(njs_runtime_t));
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133 ASSERT(rt != NULL);
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134
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135 xrt = X_MB_new(display_name, w, h);
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136
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137 rt->xrt = xrt;
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138 rt->enable_io = 0;
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139 rt->enable_timer = 0; /* no timer, now */
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140
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141 return rt;
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142 }
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143
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144 /*! \brief Get X runtime that is backend of this njs runtime.
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145 */
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146 void *
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147 _X_njs_MB_get_X_runtime(njs_runtime_t *rt) {
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148 return rt->xrt;
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149 }