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cssvalue: Make the structure vtable-based

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Don't use real classes, just a vtable.
This commit is contained in:
Benjamin Otte 2012-03-26 06:13:57 +02:00
parent 3cdb9c91ca
commit b728cfd3e8
2 changed files with 101 additions and 62 deletions
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142
gtk/gtkcssvalue.c
View File

@ -25,9 +25,10 @@
#include "fallback-c89.c"
typedef struct _GtkCssValue GtkCssValue;
struct _GtkCssValue
{
volatile gint ref_count;
GTK_CSS_VALUE_BASE
GType type;
union {
gpointer ptr;
@ -38,16 +39,59 @@ struct _GtkCssValue
} u;
};
static void
gtk_css_value_default_free (GtkCssValue *value)
{
GType type = value->type;
if (g_type_is_a (type, G_TYPE_OBJECT))
{
if (value->u.ptr != NULL)
g_object_unref (value->u.ptr);
}
else if (g_type_is_a (type, G_TYPE_BOXED))
{
if (value->u.ptr != NULL)
g_boxed_free (type, value->u.ptr);
}
else if (g_type_is_a (type, G_TYPE_STRING))
g_free (value->u.ptr);
else if (g_type_is_a (type, G_TYPE_INT))
{}
else if (g_type_is_a (type, G_TYPE_UINT))
{}
else if (g_type_is_a (type, G_TYPE_BOOLEAN))
{}
else if (g_type_is_a (type, G_TYPE_ENUM))
{}
else if (g_type_is_a (type, G_TYPE_FLAGS))
{}
else if (g_type_is_a (type, G_TYPE_DOUBLE))
{}
else if (g_type_is_a (type, G_TYPE_FLOAT))
{}
else
{
g_value_unset (value->u.ptr);
g_slice_free (GValue, value->u.ptr);
}
g_slice_free (GtkCssValue, value);
}
static const GtkCssValueClass GTK_CSS_VALUE_DEFAULT = {
gtk_css_value_default_free
};
G_DEFINE_BOXED_TYPE (GtkCssValue, _gtk_css_value, _gtk_css_value_ref, _gtk_css_value_unref)
static GtkCssValue *
_gtk_css_value_new (GType type)
gtk_css_value_new (GType type)
{
GtkCssValue *value;
value = g_slice_new0 (GtkCssValue);
value = _gtk_css_value_new (GtkCssValue, &GTK_CSS_VALUE_DEFAULT);
value->ref_count = 1;
value->type = type;
return value;
@ -70,7 +114,7 @@ _gtk_css_value_new_from_gvalue (const GValue *g_value)
value = _gtk_css_value_new_from_number (g_value_get_boxed (g_value));
else
{
value = _gtk_css_value_new (type);
value = gtk_css_value_new (type);
if (g_type_is_a (type, G_TYPE_OBJECT))
value->u.ptr = g_value_dup_object (g_value);
@ -126,7 +170,7 @@ _gtk_css_value_new_take_gvalue (GValue *g_value)
}
else
{
value = _gtk_css_value_new (type);
value = gtk_css_value_new (type);
if (g_type_is_a (type, G_TYPE_OBJECT))
value->u.ptr = g_value_get_object (g_value);
@ -170,14 +214,14 @@ _gtk_css_value_new_from_int (gint val)
{
if (singletons[val] == NULL)
{
value = _gtk_css_value_new (G_TYPE_INT);
value = gtk_css_value_new (G_TYPE_INT);
value->u.gint = val;
singletons[val] = value;
}
return _gtk_css_value_ref (singletons[val]);
}
value = _gtk_css_value_new (G_TYPE_INT);
value = gtk_css_value_new (G_TYPE_INT);
value->u.gint = val;
return value;
@ -188,7 +232,7 @@ _gtk_css_value_new_take_string (char *string)
{
GtkCssValue *value;
value = _gtk_css_value_new (G_TYPE_STRING);
value = gtk_css_value_new (G_TYPE_STRING);
value->u.ptr = string;
return value;
@ -208,7 +252,7 @@ _gtk_css_value_new_from_border (const GtkBorder *border)
{
GtkCssValue *value;
value = _gtk_css_value_new (GTK_TYPE_BORDER);
value = gtk_css_value_new (GTK_TYPE_BORDER);
value->u.ptr = g_boxed_copy0 (GTK_TYPE_BORDER, border);
return value;
@ -219,7 +263,7 @@ _gtk_css_value_new_take_pattern (cairo_pattern_t *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (CAIRO_GOBJECT_TYPE_PATTERN);
value = gtk_css_value_new (CAIRO_GOBJECT_TYPE_PATTERN);
value->u.ptr = v;
return value;
@ -230,7 +274,7 @@ _gtk_css_value_new_from_pattern (const cairo_pattern_t *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (CAIRO_GOBJECT_TYPE_PATTERN);
value = gtk_css_value_new (CAIRO_GOBJECT_TYPE_PATTERN);
value->u.ptr = g_boxed_copy0 (CAIRO_GOBJECT_TYPE_PATTERN, v);
return value;
@ -241,7 +285,7 @@ _gtk_css_value_new_take_shadow (GtkShadow *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GTK_TYPE_SHADOW);
value = gtk_css_value_new (GTK_TYPE_SHADOW);
value->u.ptr = v;
return value;
@ -252,7 +296,7 @@ _gtk_css_value_new_take_font_description (PangoFontDescription *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (PANGO_TYPE_FONT_DESCRIPTION);
value = gtk_css_value_new (PANGO_TYPE_FONT_DESCRIPTION);
value->u.ptr = v;
return value;
@ -263,7 +307,7 @@ _gtk_css_value_new_take_image (GtkCssImage *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GTK_TYPE_CSS_IMAGE);
value = gtk_css_value_new (GTK_TYPE_CSS_IMAGE);
value->u.ptr = v;
return value;
@ -281,7 +325,7 @@ _gtk_css_value_new_from_number (const GtkCssNumber *v)
{
if (zero_singleton == NULL)
{
value = _gtk_css_value_new (GTK_TYPE_CSS_NUMBER);
value = gtk_css_value_new (GTK_TYPE_CSS_NUMBER);
value->u.ptr = g_boxed_copy0 (GTK_TYPE_CSS_NUMBER, v);
zero_singleton = value;
}
@ -298,7 +342,7 @@ _gtk_css_value_new_from_number (const GtkCssNumber *v)
int i = round (v->value);
if (px_singletons[i] == NULL)
{
value = _gtk_css_value_new (GTK_TYPE_CSS_NUMBER);
value = gtk_css_value_new (GTK_TYPE_CSS_NUMBER);
value->u.ptr = g_boxed_copy0 (GTK_TYPE_CSS_NUMBER, v);
px_singletons[i] = value;
}
@ -306,7 +350,7 @@ _gtk_css_value_new_from_number (const GtkCssNumber *v)
return _gtk_css_value_ref (px_singletons[i]);
}
value = _gtk_css_value_new (GTK_TYPE_CSS_NUMBER);
value = gtk_css_value_new (GTK_TYPE_CSS_NUMBER);
value->u.ptr = g_boxed_copy0 (GTK_TYPE_CSS_NUMBER, v);
return value;
@ -317,7 +361,7 @@ _gtk_css_value_new_from_rgba (const GdkRGBA *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GDK_TYPE_RGBA);
value = gtk_css_value_new (GDK_TYPE_RGBA);
value->u.ptr = g_boxed_copy0 (GDK_TYPE_RGBA, v);
return value;
@ -328,7 +372,7 @@ _gtk_css_value_new_from_color (const GdkColor *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GDK_TYPE_COLOR);
value = gtk_css_value_new (GDK_TYPE_COLOR);
value->u.ptr = g_boxed_copy0 (GDK_TYPE_COLOR, v);
return value;
@ -339,7 +383,7 @@ _gtk_css_value_new_from_background_size (const GtkCssBackgroundSize *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GTK_TYPE_CSS_BACKGROUND_SIZE);
value = gtk_css_value_new (GTK_TYPE_CSS_BACKGROUND_SIZE);
value->u.ptr = g_boxed_copy0 (GTK_TYPE_CSS_BACKGROUND_SIZE, v);
return value;
@ -350,7 +394,7 @@ _gtk_css_value_new_from_background_position (const GtkCssBackgroundPosition *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GTK_TYPE_CSS_BACKGROUND_POSITION);
value = gtk_css_value_new (GTK_TYPE_CSS_BACKGROUND_POSITION);
value->u.ptr = g_boxed_copy0 (GTK_TYPE_CSS_BACKGROUND_POSITION, v);
return value;
@ -361,12 +405,26 @@ _gtk_css_value_new_take_symbolic_color (GtkSymbolicColor *v)
{
GtkCssValue *value;
value = _gtk_css_value_new (GTK_TYPE_SYMBOLIC_COLOR);
value = gtk_css_value_new (GTK_TYPE_SYMBOLIC_COLOR);
value->u.ptr = v;
return value;
}
GtkCssValue *
_gtk_css_value_alloc (const GtkCssValueClass *klass,
gsize size)
{
GtkCssValue *value;
value = g_slice_alloc0 (size);
value->class = klass;
value->ref_count = 1;
return value;
}
GtkCssValue *
_gtk_css_value_ref (GtkCssValue *value)
{
@ -380,49 +438,13 @@ _gtk_css_value_ref (GtkCssValue *value)
void
_gtk_css_value_unref (GtkCssValue *value)
{
GType type;
if (value == NULL)
return;
if (!g_atomic_int_dec_and_test (&value->ref_count))
return;
type = value->type;
if (g_type_is_a (type, G_TYPE_OBJECT))
{
if (value->u.ptr != NULL)
g_object_unref (value->u.ptr);
}
else if (g_type_is_a (type, G_TYPE_BOXED))
{
if (value->u.ptr != NULL)
g_boxed_free (type, value->u.ptr);
}
else if (g_type_is_a (type, G_TYPE_STRING))
g_free (value->u.ptr);
else if (g_type_is_a (type, G_TYPE_INT))
{}
else if (g_type_is_a (type, G_TYPE_UINT))
{}
else if (g_type_is_a (type, G_TYPE_BOOLEAN))
{}
else if (g_type_is_a (type, G_TYPE_ENUM))
{}
else if (g_type_is_a (type, G_TYPE_FLAGS))
{}
else if (g_type_is_a (type, G_TYPE_DOUBLE))
{}
else if (g_type_is_a (type, G_TYPE_FLOAT))
{}
else
{
g_value_unset (value->u.ptr);
g_slice_free (GValue, value->u.ptr);
}
g_slice_free (GtkCssValue, value);
value->class->free (value);
}
GType

21
gtk/gtkcssvalueprivate.h
View File

@ -35,13 +35,30 @@ G_BEGIN_DECLS
#define GTK_IS_CSS_VALUE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_VALUE))
#define GTK_CSS_VALUE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_VALUE, GtkCssValueClass))
typedef struct _GtkCssValue GtkCssValue;
/* A GtkCssValue is a refcounted immutable value type */
typedef struct _GtkCssValue GtkCssValue;
typedef struct _GtkCssValueBase GtkCssValueBase;
typedef struct _GtkCssValueClass GtkCssValueClass;
/* using define instead of struct here so compilers get the packing right */
#define GTK_CSS_VALUE_BASE \
const GtkCssValueClass *class; \
volatile gint ref_count;
struct _GtkCssValueClass {
void (* free) (GtkCssValue *value);
};
GType _gtk_css_value_get_type (void) G_GNUC_CONST;
GtkCssValue *_gtk_css_value_alloc (const GtkCssValueClass *klass,
gsize size);
#define _gtk_css_value_new(_name, _klass) ((_name *) _gtk_css_value_alloc ((_klass), sizeof (_name)))
GtkCssValue *_gtk_css_value_ref (GtkCssValue *value);
void _gtk_css_value_unref (GtkCssValue *value);
GType _gtk_css_value_get_content_type (GtkCssValue *value);
gboolean _gtk_css_value_holds (GtkCssValue *value,
GType type);