Cleanups: fix deprecated g_type_class_add_private()

- use G_DECLARE_ and G_DEFINE_ macros
- move all data into ClassNamePrivate
- use _get_instance_private()

This should not introduce any functional changes or breakage.

Skipped two classes (EekKeyboard and EekboardContextService) for now in
order not to break the build.

These two classes are used in some very funky WIP code that tries to
circumvent encapsulation.

(Funky code is in eekboard/key-emitter.c and eekboard/eekboard-context-service.c)

eek/eek-section.c

@@ -52,11 +52,6 @@ enum {
 
 static guint signals[LAST_SIGNAL] = { 0, };
 
-G_DEFINE_TYPE (EekSection, eek_section, EEK_TYPE_CONTAINER);
-
-#define EEK_SECTION_GET_PRIVATE(obj)                           \
-    (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EEK_TYPE_SECTION, EekSectionPrivate))
-
 struct _EekRow
 {
     gint num_columns;
@@ -65,17 +60,19 @@ struct _EekRow
 
 typedef struct _EekRow EekRow;
 
-struct _EekSectionPrivate
+typedef struct _EekSectionPrivate
 {
     gint angle;
     GSList *rows;
     EekModifierType modifiers;
-};
+} EekSectionPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (EekSection, eek_section, EEK_TYPE_CONTAINER)
 
 static gint
 eek_section_real_get_n_rows (EekSection *self)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(self);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
 
     return g_slist_length (priv->rows);
 }
@@ -85,7 +82,7 @@ eek_section_real_add_row (EekSection    *self,
                           gint           num_columns,
                           EekOrientation orientation)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(self);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
     EekRow *row;
 
     row = g_slice_new (EekRow);
@@ -100,7 +97,7 @@ eek_section_real_get_row (EekSection     *self,
                           gint           *num_columns,
                           EekOrientation *orientation)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(self);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
     EekRow *row;
 
     row = g_slist_nth_data (priv->rows, index);
@@ -138,7 +135,9 @@ eek_section_real_create_key (EekSection *self,
     num_rows = eek_section_get_n_rows (self);
     g_return_val_if_fail (0 <= row_index && row_index < num_rows, NULL);
 
-    row = g_slist_nth_data (self->priv->rows, row_index);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
+
+    row = g_slist_nth_data (priv->rows, row_index);
     if (row->num_columns < column_index + 1)
         row->num_columns = column_index + 1;
 
@@ -158,7 +157,7 @@ eek_section_real_create_key (EekSection *self,
 static void
 set_level_from_modifiers (EekSection *self)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(self);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
     EekKeyboard *keyboard;
     EekModifierType num_lock_mask;
     gint level = -1;
@@ -173,7 +172,7 @@ set_level_from_modifiers (EekSection *self)
 static void
 eek_section_real_key_pressed (EekSection *self, EekKey *key)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(self);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
     EekSymbol *symbol;
     EekKeyboard *keyboard;
     EekModifierBehavior behavior;
@@ -195,7 +194,7 @@ eek_section_real_key_pressed (EekSection *self, EekKey *key)
 static void
 eek_section_real_key_released (EekSection *self, EekKey *key)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(self);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
     EekSymbol *symbol;
     EekKeyboard *keyboard;
     EekModifierBehavior behavior;
@@ -225,7 +224,8 @@ eek_section_real_key_released (EekSection *self, EekKey *key)
 static void
 eek_section_finalize (GObject *object)
 {
-    EekSectionPrivate *priv = EEK_SECTION_GET_PRIVATE(object);
+    EekSection        *self = EEK_SECTION (object);
+    EekSectionPrivate *priv = eek_section_get_instance_private (self);
     GSList *head;
 
     for (head = priv->rows; head; head = g_slist_next (head))
@@ -291,8 +291,6 @@ eek_section_class_init (EekSectionClass *klass)
     GObjectClass      *gobject_class = G_OBJECT_CLASS (klass);
     GParamSpec        *pspec;
 
-    g_type_class_add_private (gobject_class, sizeof (EekSectionPrivate));
-
     klass->get_n_rows = eek_section_real_get_n_rows;
     klass->add_row = eek_section_real_add_row;
     klass->get_row = eek_section_real_get_row;
@@ -367,7 +365,7 @@ eek_section_class_init (EekSectionClass *klass)
 static void
 eek_section_init (EekSection *self)
 {
-    self->priv = EEK_SECTION_GET_PRIVATE (self);
+    /* void */
 }
 
 /**
@@ -382,8 +380,11 @@ eek_section_set_angle (EekSection  *section,
                        gint         angle)
 {
     g_return_if_fail (EEK_IS_SECTION(section));
-    if (section->priv->angle != angle) {
-        section->priv->angle = angle;
+
+    EekSectionPrivate *priv = eek_section_get_instance_private (section);
+
+    if (priv->angle != angle) {
+        priv->angle = angle;
         g_object_notify (G_OBJECT(section), "angle");
     }
 }
@@ -398,7 +399,10 @@ gint
 eek_section_get_angle (EekSection *section)
 {
     g_return_val_if_fail (EEK_IS_SECTION(section), -1);
-    return section->priv->angle;
+
+    EekSectionPrivate *priv = eek_section_get_instance_private (section);
+
+    return priv->angle;
 }
 
 /**