tests/dummyatk/my-atk-value.c

   1 #include <atk/atk.h>
   2 #include <limits.h>
   3
   4 #include "my-atk-value.h"
   5
   6 //*************************implementation***********************
   7 //implementation of virtual functions
   8 //******************get_current_value*******************
   9 static void my_atk_value_get_current_value(AtkValue *obj, GValue *value)
  10 {
  11     g_return_if_fail(MY_IS_ATK_VALUE(obj));
  12     MyAtkValue* self = (MyAtkValue*)obj;
  13
  14     g_value_init(value, G_TYPE_INT);
  15     g_value_set_int(value, self->current);
  16 }
  17 //******************get_maximum_value*******************
  18 static void my_atk_value_get_maximum_value(AtkValue *obj, GValue *value)
  19 {
  20     g_return_if_fail(MY_IS_ATK_VALUE(obj));
  21     MyAtkValue* self = (MyAtkValue*)obj;
  22
  23     g_value_init(value, G_TYPE_INT);
  24     g_value_set_int(value, self->maximum);
  25 }
  26 //******************get_minimum_value*******************
  27 static void my_atk_value_get_minimum_value(AtkValue *obj, GValue *value)
  28 {
  29     g_return_if_fail(MY_IS_ATK_VALUE(obj));
  30     MyAtkValue* self = (MyAtkValue*)obj;
  31
  32     g_value_init(value, G_TYPE_INT);
  33     g_value_set_int(value, self->minimum);
  34 }
  35 //******************set_current_value*******************
  36 static gboolean my_atk_value_set_current_value(AtkValue *obj, const GValue *value)
  37 {
  38     g_return_val_if_fail(MY_IS_ATK_VALUE(obj), FALSE);
  39     MyAtkValue* self = (MyAtkValue*)obj;
  40
  41     if(self->readonly) return FALSE;
  42
  43     gint new_value = g_value_get_int(value);
  44     if(new_value < self->minimum || new_value > self->maximum) return FALSE;
  45
  46     self->current = new_value;
  47     return TRUE;
  48 }
  49
  50 //others
  51 MyAtkValue* my_atk_value_new(gint minimum, gint maximum, gint current)
  52 {
  53     MyAtkValue* result = g_object_new(MY_TYPE_ATK_VALUE, NULL);
  54     if(result == NULL) return NULL;
  55     result->minimum = minimum;
  56     result->maximum = maximum;
  57     result->current = current;
  58
  59     return result;
  60 }
  61 static void my_atk_value_instance_init(GTypeInstance *obj, gpointer g_class)
  62 {
  63     MyAtkValue *self = (MyAtkValue*)obj;
  64
  65     self->minimum = 0;
  66     self->maximum = 0;
  67     self->current = 0;
  68
  69     self->readonly = FALSE;
  70 }
  71 static void my_atk_value_interface_init(gpointer g_iface, gpointer iface_data)
  72 {
  73     AtkValueIface *klass = (AtkValueIface*)g_iface;
  74
  75     klass->get_current_value = my_atk_value_get_current_value;
  76     klass->get_minimum_value = my_atk_value_get_minimum_value;
  77     klass->get_maximum_value = my_atk_value_get_maximum_value;
  78
  79     klass->set_current_value = my_atk_value_set_current_value;
  80 }
  81
  82 GType my_atk_value_get_type()
  83 {
  84     static GType type = 0;
  85     if(type == 0)
  86     {
  87         static const GTypeInfo typeInfo =
  88         {
  89             sizeof(MyAtkValueClass),
  90             NULL, //base_init
  91             NULL, //base_finalize
  92             NULL, //class_init
  93             NULL, //class_finalize
  94             NULL, //class_data
  95             sizeof(MyAtkValue),
  96             0, //n_preallocs
  97             my_atk_value_instance_init //instance_init
  98         };
  99
 100         static const GInterfaceInfo iface_info =
 101         {
 102             my_atk_value_interface_init,        /* interface_init*/
 103             NULL,                               /* interface_finalize*/
 104             NULL                                /* interface_data */
 105         };
 106         type = g_type_register_static(ATK_TYPE_OBJECT, "MyAtkValue", &typeInfo, 0);
 107         g_type_add_interface_static(type,
 108             ATK_TYPE_VALUE,
 109             &iface_info);
 110     }
 111     return type;
 112 }