tests/dummyatk/my-atk-value.c

   1 #include <atk/atk.h>
   2 #include <limits.h>
   3
   4 #include "my-atk-object.h"
   5 #include "my-atk-value.h"
   6
   7 //*************************implementation***********************
   8 //implementation of virtual functions
   9 //******************get_current_value*******************
  10 static void my_atk_value_get_current_value(AtkValue *obj, GValue *value)
  11 {
  12     g_return_if_fail(MY_IS_ATK_VALUE(obj));
  13     MyAtkValue* self = (MyAtkValue*)obj;
  14
  15     g_value_init(value, G_TYPE_INT);
  16     g_value_set_int(value, self->current);
  17 }
  18 //******************get_maximum_value*******************
  19 static void my_atk_value_get_maximum_value(AtkValue *obj, GValue *value)
  20 {
  21     g_return_if_fail(MY_IS_ATK_VALUE(obj));
  22     MyAtkValue* self = (MyAtkValue*)obj;
  23
  24     g_value_init(value, G_TYPE_INT);
  25     g_value_set_int(value, self->maximum);
  26 }
  27 //******************get_minimum_value*******************
  28 static void my_atk_value_get_minimum_value(AtkValue *obj, GValue *value)
  29 {
  30     g_return_if_fail(MY_IS_ATK_VALUE(obj));
  31     MyAtkValue* self = (MyAtkValue*)obj;
  32
  33     g_value_init(value, G_TYPE_INT);
  34     g_value_set_int(value, self->minimum);
  35 }
  36 //******************set_current_value*******************
  37 static gboolean my_atk_value_set_current_value(AtkValue *obj, const GValue *value)
  38 {
  39     g_return_val_if_fail(MY_IS_ATK_VALUE(obj), FALSE);
  40     MyAtkValue* self = (MyAtkValue*)obj;
  41
  42     if(self->readonly) return FALSE;
  43
  44     gint new_value = g_value_get_int(value);
  45     if(new_value < self->minimum || new_value > self->maximum) return FALSE;
  46
  47     self->current = new_value;
  48     return TRUE;
  49 }
  50
  51 //others
  52 MyAtkValue* my_atk_value_new(gint minimum, gint maximum, gint current)
  53 {
  54     MyAtkValue* result = g_object_new(MY_TYPE_ATK_VALUE, NULL);
  55     if(result == NULL) return NULL;
  56     result->minimum = minimum;
  57     result->maximum = maximum;
  58     result->current = current;
  59
  60     return result;
  61 }
  62 static void my_atk_value_instance_init(GTypeInstance *obj, gpointer g_class)
  63 {
  64     MyAtkValue *self = (MyAtkValue*)obj;
  65
  66     self->minimum = 0;
  67     self->maximum = 0;
  68     self->current = 0;
  69
  70     self->readonly = FALSE;
  71 }
  72 static void my_atk_value_interface_init(gpointer g_iface, gpointer iface_data)
  73 {
  74     AtkValueIface *klass = (AtkValueIface*)g_iface;
  75
  76     klass->get_current_value = my_atk_value_get_current_value;
  77     klass->get_minimum_value = my_atk_value_get_minimum_value;
  78     klass->get_maximum_value = my_atk_value_get_maximum_value;
  79
  80     klass->set_current_value = my_atk_value_set_current_value;
  81 }
  82
  83 GType my_atk_value_get_type()
  84 {
  85     static GType type = 0;
  86     if(type == 0)
  87     {
  88         static const GTypeInfo typeInfo =
  89         {
  90             sizeof(MyAtkValueClass),
  91             NULL, //base_init
  92             NULL, //base_finalize
  93             NULL, //class_init
  94             NULL, //class_finalize
  95             NULL, //class_data
  96             sizeof(MyAtkValue),
  97             0, //n_preallocs
  98             my_atk_value_instance_init //instance_init
  99         };
 100
 101         static const GInterfaceInfo iface_info =
 102         {
 103             my_atk_value_interface_init,        /* interface_init*/
 104             NULL,                               /* interface_finalize*/
 105             NULL                                /* interface_data */
 106         };
 107         type = g_type_register_static(MY_TYPE_ATK_OBJECT, "MyAtkValue", &typeInfo, 0);
 108         g_type_add_interface_static(type,
 109             ATK_TYPE_VALUE,
 110             &iface_info);
 111     }
 112     return type;
 113 }