1 files changed, 30 insertions, 10 deletions

diff --git a/src/customcellrendererleft.c b/src/customcellrendererleft.c
index 89184e5..2dc3ae9 100644
--- a/src/customcellrendererleft.c
+++ b/src/customcellrendererleft.c
@@ -2,6 +2,20 @@
 
 #include "customcellrendererleft.h"
 
+/* Private class member */
+#define PRIVATE(obj)                                                    \
+    (G_TYPE_INSTANCE_GET_PRIVATE((obj),                                 \
+                                 CUSTOM_TYPE_CELL_RENDERER_LEFT,       \
+                                 CustomCellRendererLeftPrivate))
+
+typedef struct _CustomCellRendererLeftPrivate CustomCellRendererLeftPrivate;
+
+struct _CustomCellRendererLeftPrivate
+{
+    gint64 left;
+    gchar buffer[20];
+};
+
 static void custom_cell_renderer_left_get_property(GObject* object,
                                                    guint param_id,
                                                    GValue* value,
@@ -14,17 +28,18 @@ static void custom_cell_renderer_left_set_property(GObject* object,
 static void convert_left_to_string(gchar* str, guint size, gint64 left);
 
 enum {
-  PROP_0,
-  PROP_LEFT,
+    PROP_0,
+    PROP_LEFT,
 };
 
 G_DEFINE_TYPE(CustomCellRendererLeft, custom_cell_renderer_left, GTK_TYPE_CELL_RENDERER_TEXT)
 
 static void custom_cell_renderer_left_init(CustomCellRendererLeft* cell_left)
 {
-    convert_left_to_string(cell_left->buffer, sizeof(cell_left->buffer),
-                           cell_left->left);
-    g_object_set(cell_left, "text", cell_left->buffer, NULL);
+    convert_left_to_string(PRIVATE(cell_left)->buffer,
+                           sizeof(PRIVATE(cell_left)->buffer),
+                           PRIVATE(cell_left)->left);
+    g_object_set(cell_left, "text", PRIVATE(cell_left)->buffer, NULL);
 }
 
 static void custom_cell_renderer_left_class_init(CustomCellRendererLeftClass *cell_left_class)
@@ -35,6 +50,9 @@ static void custom_cell_renderer_left_class_init(CustomCellRendererLeftClass *ce
     object_class = G_OBJECT_CLASS(cell_left_class);
     /* cell_renderer_class = GTK_CELL_RENDERER_CLASS(cell_left_class); */
 
+    g_type_class_add_private(object_class,
+                             sizeof(CustomCellRendererLeftPrivate));
+
     object_class->set_property = custom_cell_renderer_left_set_property;
     object_class->get_property = custom_cell_renderer_left_get_property;
 
@@ -64,7 +82,7 @@ void custom_cell_renderer_left_get_property(GObject* object,
     switch (param_id)
     {
     case PROP_LEFT:
-        g_value_set_int64(value, left->left);
+        g_value_set_int64(value, PRIVATE(left)->left);
         break;
     default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec);
@@ -85,9 +103,9 @@ void custom_cell_renderer_left_set_property(GObject* object,
     {
         gint64 left_value = g_value_get_int64(value);
 
-        if (left->left != left_value)
+        if (PRIVATE(left)->left != left_value)
         {
-            left->left = left_value;
+            PRIVATE(left)->left = left_value;
             changed = TRUE;
         }
         break;
@@ -98,8 +116,10 @@ void custom_cell_renderer_left_set_property(GObject* object,
 
     if (changed)
     {
-        convert_left_to_string(left->buffer, sizeof(left->buffer), left->left);
-        g_object_set(left, "text", left->buffer, NULL);
+        convert_left_to_string(PRIVATE(left)->buffer,
+                               sizeof(PRIVATE(left)->buffer),
+                               PRIVATE(left)->left);
+        g_object_set(left, "text", PRIVATE(left)->buffer, NULL);
     }
 }