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1 |
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2 #include <lua.h> |
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3 #include <lauxlib.h> |
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4 #include <glib.h> |
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5 |
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6 #include "glib_types.h" |
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7 #include "util.h" |
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8 |
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9 /// g.source.bless |
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10 /// Blesses given pointer to g source object. |
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11 /// A: lightuserdata (pointer to C glib event source object) |
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12 /// R: g source object |
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13 static int lglib_source_bless_lua (lua_State *L) |
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14 { |
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15 luaL_argcheck (L, lua_islightuserdata (L, 1), 1, "glib source lightuserdata expected"); |
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16 lglib_source_bless (L, lua_touserdata (L, 1)); |
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17 return 1; |
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18 } |
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19 |
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20 /// source:context |
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21 /// Connects event source to main context or returns context, |
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22 /// to which this source is connected. |
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23 /// A: lglib main context object |
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24 /// R: int (source id, when called with args) or g main context object or nil (if called with no args) |
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25 static int lglib_source_context (lua_State *L) |
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26 { |
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27 lglib_source_t *object = luaL_checklglib_source (L, 1); |
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28 if (lua_gettop (L) > 1) { // Attach |
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29 lglib_main_context_t *context = luaL_checklglib_main_context (L, 2); |
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30 lua_pushnumber (L, g_source_attach (object->source, context->main_context)); |
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31 } else { // Get |
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32 GMainContext *context = g_source_get_context (object->source); |
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33 if (context) { |
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34 lglib_main_context_bless (L, context); |
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35 // XXX g_main_context_unref (context); |
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36 } else |
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37 lua_pushnil (L); |
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38 } |
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39 return 1; |
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40 } |
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41 |
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42 /// source callback function |
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43 /// Does processing of events. Return value indicates, if source should not be destroyed. |
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44 /// R: boolean (continue) |
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45 static gboolean lglib_source_callback (lglib_callback_t *cb) |
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46 { |
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47 lua_rawgeti (cb->L, LUA_REGISTRYINDEX, cb->reference); |
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48 if (lua_pcall (cb->L, 0, 1, 0)) { |
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49 // XXX lua_error (cb->L); |
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50 lua_pop (cb->L, 1); |
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51 return FALSE; |
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52 } |
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53 return lua_toboolean (cb->L, -1); |
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54 } |
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55 |
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56 /// source:callback |
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57 /// Sets callback function for given event source. |
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58 /// A: source callback function |
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59 static int lglib_source_set_callback (lua_State *L) |
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60 { |
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61 lglib_source_t *object = luaL_checklglib_source (L, 1); |
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62 lglib_callback_t *cb; |
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63 luaL_argcheck (L, lua_isfunction (L, 2), 2, "function expected"); |
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64 |
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65 cb = luaL_malloc (L, sizeof (lglib_callback_t)); |
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66 cb->reference = luaL_ref (L, LUA_REGISTRYINDEX); |
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67 cb->L = L; |
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68 |
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69 g_source_set_callback (object->source, (GSourceFunc)lglib_source_callback, |
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70 cb, (GDestroyNotify)lglib_callback_destroy); |
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71 return 0; |
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72 } |
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73 |
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74 /// source:priority |
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75 /// Sets or gets priority of source. |
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76 /// A: integer (optional priority) |
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77 /// R: integer (when called with no args) |
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78 static int lglib_source_priority (lua_State *L) |
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79 { |
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80 lglib_source_t *object = luaL_checklglib_source (L, 1); |
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81 if (lua_gettop (L) > 1) { |
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82 g_source_set_priority (object->source, luaL_checkint (L, 2)); |
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83 return 0; |
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84 } else { |
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85 lua_pushnumber (L, g_source_get_priority (object->source)); |
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86 return 1; |
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87 } |
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88 } |
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89 |
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90 /// source:pointer |
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91 /// Returns pointer to underlying C structure. |
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92 /// A: g source object |
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93 /// R: lightuserdata |
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94 static int lglib_source_pointer (lua_State *L) |
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95 { |
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96 lglib_source_t *object = luaL_checklglib_source (L, 1); |
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97 lua_pushlightuserdata (L, object->source); |
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98 return 1; |
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99 } |
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100 |
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101 static int lglib_source_gc (lua_State *L) |
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102 { |
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103 lglib_source_t *object = lua_touserdata (L, 1); |
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104 g_source_unref (object->source); |
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105 return 0; |
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106 } |
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107 |
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108 const luaL_Reg lglib_source_reg_f[] = { |
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109 { "bless", lglib_source_bless_lua }, |
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110 { NULL, NULL }, |
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111 }; |
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112 |
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113 const luaL_Reg lglib_source_reg_m[] = { |
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114 { "context", lglib_source_context }, |
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115 { "priority", lglib_source_priority }, |
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116 { "callback", lglib_source_set_callback }, |
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117 { "pointer", lglib_source_pointer }, |
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118 { "__gc", lglib_source_gc }, |
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119 { NULL, NULL }, |
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120 }; |
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121 |
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122 int luaopen_glib_source (lua_State *L) |
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123 { |
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124 luaL_newmetatable (L, "glib.source"); |
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125 lua_pushstring (L, "__index"); |
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126 lua_pushvalue (L, -2); |
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127 lua_settable (L, -3); |
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128 luaL_register (L, NULL, lglib_source_reg_m); |
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129 lua_pop (L, 1); |
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130 luaL_register (L, "g.source", lglib_source_reg_f); |
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131 return 1; |
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132 } |
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133 |