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/* LibFO
* libfo-pango.c: Extra PangoAttribute types needed by LibFO.
*
* Copyright (C) 2007 Menteith Consulting Ltd
*
* !See COPYING for the status of this software.
*/
#include "libfo-pango.h"
/**
* libfo_pango_attr_callback_get_type:
*
* Register the 'callback' PangoAttribute type.
*
* Return value: The new #PangoAttrType.
**/
PangoAttrType
libfo_pango_attr_callback_get_type (void)
{
static PangoAttrType attr_callback = PANGO_ATTR_INVALID;
if (attr_callback == PANGO_ATTR_INVALID)
{
attr_callback =
pango_attr_type_register ("callback");
}
return attr_callback;
}
static PangoAttribute *
libfo_pango_attr_pointer_new (const PangoAttrClass *klass,
gpointer pointer)
{
LibfoPangoAttrPointer *result = g_new (LibfoPangoAttrPointer, 1);
result->attr.klass = klass;
result->pointer = pointer;
return (PangoAttribute *)result;
}
static PangoAttribute *
libfo_pango_attr_pointer_copy (const PangoAttribute *attr)
{
const LibfoPangoAttrPointer *pointer_attr = (LibfoPangoAttrPointer *)attr;
return libfo_pango_attr_pointer_new (attr->klass,
pointer_attr->pointer);
}
static void
libfo_pango_attr_pointer_destroy (PangoAttribute *attr)
{
g_free (attr);
}
static gpointer
libfo_pango_attr_pointer_get_pointer (const PangoAttribute *attr)
{
const LibfoPangoAttrPointer *pointer_attr = (LibfoPangoAttrPointer *)attr;
return pointer_attr->pointer;
}
static gboolean
libfo_pango_attr_pointer_equal (const PangoAttribute *attr1,
const PangoAttribute *attr2)
{
const LibfoPangoAttrPointer *pointer_attr1 =
(const LibfoPangoAttrPointer *)attr1;
const LibfoPangoAttrPointer *pointer_attr2 =
(const LibfoPangoAttrPointer *)attr2;
return (pointer_attr1->pointer == pointer_attr2->pointer);
}
/**
* libfo_pango_attr_callback_new:
* @callback: the callback
*
* Create a new callback attribute.
*
* Return value: the new #PangoAttribute.
**/
PangoAttribute *
libfo_pango_attr_callback_new (gpointer callback)
{
static PangoAttrClass klass = {PANGO_ATTR_INVALID,
NULL,
NULL,
NULL};
if (klass.type == PANGO_ATTR_INVALID)
{
klass.type = libfo_pango_attr_callback_get_type();
klass.copy = libfo_pango_attr_pointer_copy;
klass.destroy = libfo_pango_attr_pointer_destroy;
klass.equal = libfo_pango_attr_pointer_equal;
}
return libfo_pango_attr_pointer_new (&klass, callback);
}
/**
* libfo_pango_attr_callback_get_callback:
* @attr: The 'callback' attribute.
*
* Get the callback associated with @attr.
*
* Return value: The callback.
**/
gpointer
libfo_pango_attr_callback_get_callback (const PangoAttribute *attr)
{
return libfo_pango_attr_pointer_get_pointer (attr);
}
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