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Convert LdSymbol into an abstract class.

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Created LdLuaSymbol, which subclasses LdSymbol.
This commit is contained in:
Přemysl Eric Janouch
2010-09-25 20:59:20 +02:00
parent 23a1f25130
commit efe45e9601
5 changed files with 191 additions and 34 deletions
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47
src/ld-symbol.c
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@@ -28,18 +28,17 @@
/*
* LdSymbolPrivate:
* @library: The parent LdLibrary.
* The library contains the real function for rendering.
* @parent: The parent LdSymbolCategory. It is used to identify
* the object within it's library.
*/
struct _LdSymbolPrivate
{
LdLibrary *library;
LdSymbolCategory *parent;
};
G_DEFINE_TYPE (LdSymbol, ld_symbol, G_TYPE_OBJECT);
G_DEFINE_ABSTRACT_TYPE (LdSymbol, ld_symbol, G_TYPE_OBJECT);
static void
ld_symbol_finalize (GObject *gobject);
static void ld_symbol_finalize (GObject *gobject);
static void
@@ -57,7 +56,7 @@ static void
ld_symbol_init (LdSymbol *self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE
(self, LD_TYPE_SYMBOL_LIBRARY, LdSymbolPrivate);
(self, LD_TYPE_SYMBOL, LdSymbolPrivate);
}
static void
@@ -66,29 +65,12 @@ ld_symbol_finalize (GObject *gobject)
LdSymbol *self;
self = LD_SYMBOL (gobject);
g_object_unref (self->priv->library);
g_object_unref (self->priv->parent);
/* Chain up to the parent class. */
G_OBJECT_CLASS (ld_symbol_parent_class)->finalize (gobject);
}
/**
* ld_symbol_new:
* @library: A library object.
* @filename: The file from which the symbol will be loaded.
*
* Load a symbol from a file into the library.
*/
LdSymbol *ld_symbol_new (LdLibrary *library)
{
LdSymbol *symbol;
symbol = g_object_new (LD_TYPE_SYMBOL, NULL);
symbol->priv->library = library;
g_object_ref (library);
}
/**
* ld_symbol_build_identifier:
* @self: A symbol object.
@@ -96,9 +78,10 @@ LdSymbol *ld_symbol_new (LdLibrary *library)
* Build an identifier for the symbol.
* The identifier is in the format "Category/Category/Symbol".
*/
char *
gchar *
ld_symbol_build_identifier (LdSymbol *self)
{
/* TODO: Implement. */
return NULL;
}
@@ -106,12 +89,18 @@ ld_symbol_build_identifier (LdSymbol *self)
* ld_symbol_draw:
* @self: A symbol object.
* @cr: A cairo surface to be drawn on.
* @param: Parameters for the symbol in a table.
*
* Draw the symbol onto a Cairo surface.
*/
void
ld_symbol_draw (LdSymbol *self, cairo_t *cr, GHashTable *param)
ld_symbol_draw (LdSymbol *self, cairo_t *cr)
{
return;
LdSymbolClass *klass;
g_return_if_fail (LD_IS_SYMBOL (self));
g_return_if_fail (cr != NULL);
klass = LD_SYMBOL_GET_CLASS (self);
if (klass->draw)
klass->draw (self, cr);
}