From e83f0907beafd1dbd721c3f732b54235a53c8191 Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu@sugarlabs.org>
Date: Wed, 02 Dec 2009 10:30:29 +0000
Subject: Move fields in SugarGrid to properties

---
diff --git a/src/sugar/sugar-grid.c b/src/sugar/sugar-grid.c
index 3fa7de5..c77ac26 100644
--- a/src/sugar/sugar-grid.c
+++ b/src/sugar/sugar-grid.c
@@ -19,28 +19,46 @@
 
 #include "sugar-grid.h"
 
-static void sugar_grid_class_init (SugarGridClass *grid_class);
-static void sugar_grid_init       (SugarGrid *grid);
+enum {
+  PROP_0,
+  PROP_WIDTH,
+  PROP_HEIGHT,
+};
 
+struct _SugarGrid {
+    GObject base_instance;
+
+    SugarGridPrivate *priv;
+};
+
+struct _SugarGridClass {
+	GObjectClass base_class;
+};
+
+struct _SugarGridPrivate {
+    guint width;
+    guint height;
+    guchar *weights;
+};
 
 G_DEFINE_TYPE(SugarGrid, sugar_grid, G_TYPE_OBJECT)
 
 void
 sugar_grid_setup(SugarGrid *grid, gint width, gint height)
 {
-    g_free(grid->weights);
+    g_free(grid->priv->weights);
 
-    grid->weights = g_new0(guchar, width * height);
-    grid->width = width;
-    grid->height = height;
+    grid->priv->weights = g_new0(guchar, width * height);
+    grid->priv->width = width;
+    grid->priv->height = height;
 }
 
 static gboolean
 check_bounds(SugarGrid *grid, GdkRectangle *rect)
 {
-    return (grid->weights != NULL &&
-            grid->width >= rect->x + rect->width &&
-            grid->height >= rect->y + rect->height);
+    return (grid->priv->weights != NULL &&
+            grid->priv->width >= rect->x + rect->width &&
+            grid->priv->height >= rect->y + rect->height);
 }
 
 void
@@ -55,7 +73,7 @@ sugar_grid_add_weight(SugarGrid *grid, GdkRectangle *rect)
 
     for (k = rect->y; k < rect->y + rect->height; k++) {
         for (i = rect->x; i < rect->x + rect->width; i++) {
-            grid->weights[i + k * grid->width] += 1;
+            grid->priv->weights[i + k * grid->priv->width] += 1;
         }
     }
 }
@@ -72,7 +90,7 @@ sugar_grid_remove_weight(SugarGrid *grid, GdkRectangle *rect)
 
     for (k = rect->y; k < rect->y + rect->height; k++) {
         for (i = rect->x; i < rect->x + rect->width; i++) {
-            grid->weights[i + k * grid->width] -= 1;
+            grid->priv->weights[i + k * grid->priv->width] -= 1;
         }
     }
 }
@@ -89,7 +107,7 @@ sugar_grid_compute_weight(SugarGrid *grid, GdkRectangle *rect)
 
     for (k = rect->y; k < rect->y + rect->height; k++) {
         for (i = rect->x; i < rect->x + rect->width; i++) {
-            sum += grid->weights[i + k * grid->width];
+            sum += grid->priv->weights[i + k * grid->priv->width];
         }
     }
 
@@ -97,24 +115,95 @@ sugar_grid_compute_weight(SugarGrid *grid, GdkRectangle *rect)
 }
 
 static void
+sugar_grid_set_property (GObject      *object,
+                         guint         property_id,
+                         const GValue *value,
+                         GParamSpec   *pspec)
+{
+  SugarGrid *self = SUGAR_GRID (object);
+
+  switch (property_id)
+    {
+    case PROP_WIDTH:
+      g_value_set_uint ((GValue *)value, self->priv->width);
+      break;
+    case PROP_HEIGHT:
+      g_value_set_uint ((GValue *)value, self->priv->height);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+sugar_grid_get_property (GObject    *object,
+                         guint       property_id,
+                         GValue     *value,
+                         GParamSpec *pspec)
+{
+  SugarGrid *self = SUGAR_GRID (object);
+
+  switch (property_id)
+    {
+    case PROP_WIDTH:
+      g_value_set_uint (value, self->priv->width);
+      break;
+    case PROP_HEIGHT:
+      g_value_set_uint (value, self->priv->height);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
 sugar_grid_finalize(GObject *object)
 {
     SugarGrid *grid = SUGAR_GRID(object);
 
-    g_free(grid->weights);
+    g_free(grid->priv->weights);
 }
 
 static void
 sugar_grid_class_init(SugarGridClass *grid_class)
 {
     GObjectClass *gobject_class;
+    GParamSpec *pspec;
 
     gobject_class = G_OBJECT_CLASS(grid_class);
     gobject_class->finalize = sugar_grid_finalize;
+    gobject_class->set_property = sugar_grid_set_property;
+    gobject_class->get_property = sugar_grid_get_property;
+
+    g_type_class_add_private (grid_class, sizeof (SugarGridPrivate));
+
+    pspec = g_param_spec_uint ("width", NULL,
+                               "Width of the Grid",
+                               0, G_MAXUINT, 0,
+                               G_PARAM_READWRITE);
+    g_object_class_install_property (gobject_class,
+                                     PROP_WIDTH,
+                                     pspec);
+
+    pspec = g_param_spec_uint ("height", NULL,
+                               "Height of the Grid",
+                               0, G_MAXUINT, 0,
+                               G_PARAM_READWRITE);
+    g_object_class_install_property (gobject_class,
+                                     PROP_HEIGHT,
+                                     pspec);
 }
 
 static void
 sugar_grid_init(SugarGrid *grid)
 {
-    grid->weights = NULL;
+    grid->priv = G_TYPE_INSTANCE_GET_PRIVATE (grid, SUGAR_TYPE_GRID, SugarGridPrivate);
+    grid->priv->width = 0;
+    grid->priv->height = 0;
+    grid->priv->weights = NULL;
 }
+
diff --git a/src/sugar/sugar-grid.h b/src/sugar/sugar-grid.h
index d493a60..90fcf83 100644
--- a/src/sugar/sugar-grid.h
+++ b/src/sugar/sugar-grid.h
@@ -27,6 +27,7 @@ G_BEGIN_DECLS
 
 typedef struct _SugarGrid SugarGrid;
 typedef struct _SugarGridClass SugarGridClass;
+typedef struct _SugarGridPrivate SugarGridPrivate;
 
 #define SUGAR_TYPE_GRID			     (sugar_grid_get_type())
 #define SUGAR_GRID(object)	         (G_TYPE_CHECK_INSTANCE_CAST((object), SUGAR_TYPE_GRID, SugarGrid))
@@ -35,18 +36,6 @@ typedef struct _SugarGridClass SugarGridClass;
 #define SUGAR_IS_GRID_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE((klass), SUGAR_TYPE_GRID))
 #define SUGAR_GRID_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS((object), SUGAR_TYPE_GRID, SugarGridClass))
 
-struct _SugarGrid {
-    GObject base_instance;
-
-    gint width;
-    gint height;
-    guchar *weights;
-};
-
-struct _SugarGridClass {
-	GObjectClass base_class;
-};
-
 GType	 sugar_grid_get_type       (void);
 void     sugar_grid_setup          (SugarGrid    *grid,
                                     gint          width,
--
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