src/lib/canvas/evas_layer.c

   1 #include "evas_common.h"
   2 #include "evas_private.h"
   3
   4 static void _evas_layer_free(Evas_Layer *lay);
   5
   6 void
   7 evas_object_inject(Evas_Object *obj, Evas *e)
   8 {
   9    Evas_Layer *lay;
  10
  11    if (obj->in_layer) return;
  12    lay = evas_layer_find(e, obj->cur.layer);
  13    if (!lay)
  14      {
  15         lay = evas_layer_new(e);
  16         lay->layer = obj->cur.layer;
  17         evas_layer_add(lay);
  18      }
  19    lay->objects = (Evas_Object *)eina_inlist_append(EINA_INLIST_GET(lay->objects), EINA_INLIST_GET(obj));
  20    lay->usage++;
  21    obj->layer = lay;
  22    obj->in_layer = 1;
  23 }
  24
  25 void
  26 evas_object_release(Evas_Object *obj, int clean_layer)
  27 {
  28    if (!obj->in_layer) return;
  29    obj->layer->objects = (Evas_Object *)eina_inlist_remove(EINA_INLIST_GET(obj->layer->objects), EINA_INLIST_GET(obj));
  30    obj->layer->usage--;
  31    if (clean_layer)
  32      {
  33         if (obj->layer->usage <= 0)
  34           {
  35              evas_layer_del(obj->layer);
  36              _evas_layer_free(obj->layer);
  37           }
  38      }
  39    obj->layer = NULL;
  40    obj->in_layer = 0;
  41 }
  42
  43 Evas_Layer *
  44 evas_layer_new(Evas *e)
  45 {
  46    Evas_Layer *lay;
  47
  48    lay = calloc(1, sizeof(Evas_Layer));
  49    if (!lay) return NULL;
  50    lay->evas = e;
  51    return lay;
  52 }
  53
  54 static void
  55 _evas_layer_free(Evas_Layer *lay)
  56 {
  57    free(lay);
  58 }
  59
  60 void
  61 evas_layer_pre_free(Evas_Layer *lay)
  62 {
  63    Evas_Object *obj;
  64
  65    EINA_INLIST_FOREACH(lay->objects, obj)
  66      {
  67         if ((!obj->smart.parent) && (!obj->delete_me))
  68           evas_object_del(obj);
  69      }
  70 }
  71
  72 void
  73 evas_layer_free_objects(Evas_Layer *lay)
  74 {
  75    while (lay->objects)
  76      {
  77         Evas_Object *obj;
  78
  79         obj = (Evas_Object *)lay->objects;
  80         evas_object_free(obj, 0);
  81      }
  82 }
  83
  84 void
  85 evas_layer_clean(Evas *e)
  86 {
  87    Evas_Layer *tmp;
  88
  89    while (e->layers)
  90      {
  91         tmp = e->layers;
  92         evas_layer_del(tmp);
  93         _evas_layer_free(tmp);
  94      }
  95 }
  96
  97 Evas_Layer *
  98 evas_layer_find(Evas *e, short layer_num)
  99 {
 100    Evas_Layer *layer;
 101
 102    EINA_INLIST_FOREACH(e->layers, layer)
 103      {
 104         if (layer->layer == layer_num) return layer;
 105      }
 106    return NULL;
 107 }
 108
 109 void
 110 evas_layer_add(Evas_Layer *lay)
 111 {
 112    Evas_Layer *layer;
 113
 114    EINA_INLIST_FOREACH(lay->evas->layers, layer)
 115      {
 116         if (layer->layer > lay->layer)
 117           {
 118              lay->evas->layers = (Evas_Layer *)eina_inlist_prepend_relative(EINA_INLIST_GET(lay->evas->layers),
 119                                                                             EINA_INLIST_GET(lay),
 120                                                                             EINA_INLIST_GET(layer));
 121              return;
 122           }
 123      }
 124    lay->evas->layers = (Evas_Layer *)eina_inlist_append(EINA_INLIST_GET(lay->evas->layers), EINA_INLIST_GET(lay));
 125 }
 126
 127 void
 128 evas_layer_del(Evas_Layer *lay)
 129 {
 130    Evas *e;
 131
 132    e = lay->evas;
 133    e->layers = (Evas_Layer *)eina_inlist_remove(EINA_INLIST_GET(e->layers), EINA_INLIST_GET(lay));
 134 }
 135
 136 /* public functions */
 137
 138 /**
 139  * @addtogroup Evas_Object_Group_Basic
 140  * @{
 141  */
 142
 143 /**
 144  * Sets the layer of the evas that the given object will be part of.
 145  *
 146  * It is not possible to change the layer of a smart object's child.
 147  *
 148  * @param   obj The given evas object.
 149  * @param   l   The number of the layer to place the object on.
 150  *          Between #EVAS_LAYER_MIN and #EVAS_LAYER_MAX.
 151  */
 152 EAPI void
 153 evas_object_layer_set(Evas_Object *obj, short l)
 154 {
 155    Evas *e;
 156
 157    MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
 158    return;
 159    MAGIC_CHECK_END();
 160    if (evas_object_intercept_call_layer_set(obj, l)) return;
 161    if (obj->smart.parent) return;
 162    if (obj->cur.layer == l)
 163      {
 164         evas_object_raise(obj);
 165         return;
 166      }
 167    e = obj->layer->evas;
 168    evas_object_release(obj, 1);
 169    obj->cur.layer = l;
 170    evas_object_inject(obj, e);
 171    obj->restack = 1;
 172    evas_object_change(obj);
 173    if (obj->clip.clipees)
 174      {
 175         evas_object_inform_call_restack(obj);
 176         return;
 177      }
 178    evas_object_change(obj);
 179    if (!obj->smart.smart)
 180      {
 181         if (evas_object_is_in_output_rect(obj,
 182                                           obj->layer->evas->pointer.x,
 183                                           obj->layer->evas->pointer.y, 1, 1) &&
 184             obj->cur.visible)
 185           if (eina_list_data_find(obj->layer->evas->pointer.object.in, obj))
 186             evas_event_feed_mouse_move(obj->layer->evas,
 187                                        obj->layer->evas->pointer.x,
 188                                        obj->layer->evas->pointer.y,
 189                                        obj->layer->evas->last_timestamp,
 190                                        NULL);
 191      }
 192    evas_object_inform_call_restack(obj);
 193 }
 194
 195 /**
 196  * Retrieves the layer of the evas that the given object is part of.
 197  *
 198  * Be carefull, it doesn't make sense to change the layer of smart object's
 199  * child. So the returned value could be wrong in some case. Don't rely on
 200  * it's accuracy.
 201  *
 202  * @param   obj The given evas object.
 203  * @return  Number of the layer.
 204  */
 205 EAPI short
 206 evas_object_layer_get(const Evas_Object *obj)
 207 {
 208    MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
 209    return 0;
 210    MAGIC_CHECK_END();
 211    if (obj->smart.parent)
 212      {
 213         return obj->smart.parent->cur.layer;
 214      }
 215    return obj->cur.layer;
 216 }
 217
 218 /**
 219  * @}
 220  */