src/bin/e_screensaver.c

   1 #include "e.h"
   2
   3 typedef struct _E_Screensaver
   4 {
   5    Eina_List          *handlers;
   6    Ecore_Idle_Enterer *idle_before;
   7
   8    double              idletime;
   9    Ecore_Timer        *idletimer;
  10
  11    Eina_Bool           ev_update;
  12    Eina_Bool           active; /* indicates that screensaver window is showing */
  13    Eina_Bool           enable; /* indicates that screensaver feature is enabled */
  14 } E_Screensaver;
  15
  16 static E_Screensaver *_saver = NULL;
  17
  18 E_API int E_EVENT_SCREENSAVER_ON = -1;
  19 E_API int E_EVENT_SCREENSAVER_OFF = -1;
  20 E_API int E_EVENT_SCREENSAVER_OFF_PRE = -1;
  21
  22 static Eina_Bool _e_scrsaver_cb_idletimeout(void *data EINA_UNUSED);
  23 static void      _e_scrsaver_idletimeout_reset(void);
  24 static Eina_Bool _e_scrsaver_cb_idle_before(void *data EINA_UNUSED);
  25 static Eina_Bool _e_scrsaver_cb_input(void *data EINA_UNUSED, int type EINA_UNUSED, void *event EINA_UNUSED);
  26 static void      _e_scrsaver_active_set(Eina_Bool set);
  27
  28 static Eina_Bool
  29 _e_scrsaver_cb_idletimeout(void *data EINA_UNUSED)
  30 {
  31    _e_scrsaver_active_set(EINA_TRUE);
  32    _saver->idletimer = NULL;
  33    return EINA_FALSE;
  34 }
  35
  36 static void
  37 _e_scrsaver_idletimeout_reset(void)
  38 {
  39    if (_saver->idletimer)
  40      {
  41         ecore_timer_del(_saver->idletimer);
  42         _saver->idletimer = NULL;
  43      }
  44
  45    if (!_saver->enable) return;
  46
  47    if (_saver->idletime != 0.0)
  48      {
  49         _saver->idletimer =
  50            ecore_timer_add(_saver->idletime,
  51                            _e_scrsaver_cb_idletimeout,
  52                            NULL);
  53      }
  54 }
  55
  56 static Eina_Bool
  57 _e_scrsaver_cb_idle_before(void *data EINA_UNUSED)
  58 {
  59    if (!_saver) return ECORE_CALLBACK_RENEW;
  60    if (!_saver->ev_update) return ECORE_CALLBACK_RENEW;
  61
  62    _e_scrsaver_idletimeout_reset();
  63    _e_scrsaver_active_set(EINA_FALSE);
  64    _saver->ev_update = EINA_FALSE;
  65
  66    return ECORE_CALLBACK_RENEW;
  67 }
  68
  69 static Eina_Bool
  70 _e_scrsaver_cb_input(void *data EINA_UNUSED, int type EINA_UNUSED, void *event EINA_UNUSED)
  71 {
  72    if (!_saver) return ECORE_CALLBACK_PASS_ON;
  73    _saver->ev_update = EINA_TRUE;
  74    return ECORE_CALLBACK_PASS_ON;
  75 }
  76
  77 static void
  78 _e_scrsaver_active_set(Eina_Bool set)
  79 {
  80    int ev = -1;
  81    if (set == _saver->active) return;
  82
  83    if (set)
  84      ev = E_EVENT_SCREENSAVER_ON;
  85    else
  86      ev = E_EVENT_SCREENSAVER_OFF;
  87
  88    ecore_event_add(ev, NULL, NULL, NULL);
  89
  90    _saver->active = set;
  91 }
  92
  93 EINTERN void
  94 e_screensaver_preinit(void)
  95 {
  96    E_EVENT_SCREENSAVER_ON = ecore_event_type_new();
  97    E_EVENT_SCREENSAVER_OFF = ecore_event_type_new();
  98    E_EVENT_SCREENSAVER_OFF_PRE = ecore_event_type_new();
  99 }
 100
 101 EINTERN int
 102 e_screensaver_init(void)
 103 {
 104    if (!_saver)
 105      {
 106         _saver = E_NEW(E_Screensaver, 1);
 107         if (!_saver) return 0;
 108
 109         _saver->idletime = 0.0;
 110      }
 111    return 1;
 112 }
 113
 114 EINTERN int
 115 e_screensaver_shutdown(void)
 116 {
 117    e_screensaver_disable();
 118    E_FREE(_saver);
 119    return 1;
 120 }
 121
 122 E_API void
 123 e_screensaver_timeout_set(double time)
 124 {
 125    if (!_saver) return;
 126
 127    _saver->idletime = time;
 128    _e_scrsaver_idletimeout_reset();
 129 }
 130
 131 E_API double
 132 e_screensaver_timeout_get(void)
 133 {
 134    if (!_saver) return 0.0;
 135    return _saver->idletime;
 136 }
 137
 138 static void
 139 _e_scrsaver_cb_input_async(void *data)
 140 {
 141    _e_scrsaver_cb_input(NULL, 0, NULL);
 142 }
 143
 144 E_API void
 145 e_screensaver_notidle(void)
 146 {
 147    ecore_main_loop_thread_safe_call_async(_e_scrsaver_cb_input_async, NULL);
 148 }
 149
 150 E_API void
 151 e_screensaver_enable(void)
 152 {
 153    if (!_saver) return;
 154    if (_saver->enable) return;
 155
 156    _saver->enable = EINA_TRUE;
 157    _saver->idle_before = ecore_idle_enterer_before_add(_e_scrsaver_cb_idle_before, NULL);
 158
 159    E_LIST_HANDLER_APPEND(_saver->handlers, ECORE_EVENT_MOUSE_MOVE,        _e_scrsaver_cb_input, NULL);
 160    E_LIST_HANDLER_APPEND(_saver->handlers, ECORE_EVENT_MOUSE_BUTTON_DOWN, _e_scrsaver_cb_input, NULL);
 161    E_LIST_HANDLER_APPEND(_saver->handlers, ECORE_EVENT_MOUSE_BUTTON_UP,   _e_scrsaver_cb_input, NULL);
 162    E_LIST_HANDLER_APPEND(_saver->handlers, ECORE_EVENT_MOUSE_WHEEL,       _e_scrsaver_cb_input, NULL);
 163
 164    _e_scrsaver_idletimeout_reset();
 165 }
 166
 167 E_API void
 168 e_screensaver_disable(void)
 169 {
 170    if (!_saver) return;
 171    if (!_saver->enable) return;
 172
 173    _saver->enable = EINA_FALSE;
 174    _e_scrsaver_active_set(EINA_FALSE);
 175
 176    E_FREE_LIST(_saver->handlers, ecore_event_handler_del);
 177    _saver->handlers = NULL;
 178
 179    if (_saver->idletimer)
 180      {
 181         ecore_timer_del(_saver->idletimer);
 182         _saver->idletimer = NULL;
 183      }
 184
 185    if (_saver->idle_before)
 186      {
 187         ecore_idle_enterer_del(_saver->idle_before);
 188         _saver->idle_before = NULL;
 189      }
 190 }
 191
 192 E_API Eina_Bool
 193 e_screensaver_enabled_get(void)
 194 {
 195    if (!_saver) return EINA_FALSE;
 196
 197    return _saver->enable;
 198 }