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/*
* ld-symbol.c
*
* This file is a part of logdiag.
* Copyright 2010, 2011 Přemysl Eric Janouch
*
* See the file LICENSE for licensing information.
*
*/
#include "liblogdiag.h"
#include "config.h"
/**
* SECTION:ld-symbol
* @short_description: A symbol
* @see_also: #LdDiagramSymbol, #LdDiagramView
*
* #LdSymbol represents a symbol to be drawn by #LdDiagramView.
*
* All implementations of this abstract class are required to use
* cairo_save() and cairo_restore() when drawing to store the state.
*/
enum
{
PROP_0,
PROP_NAME,
PROP_HUMAN_NAME,
PROP_AREA,
PROP_TERMINALS
};
static void ld_symbol_get_property (GObject *object, guint property_id,
GValue *value, GParamSpec *pspec);
static void ld_symbol_set_property (GObject *object, guint property_id,
const GValue *value, GParamSpec *pspec);
G_DEFINE_ABSTRACT_TYPE (LdSymbol, ld_symbol, G_TYPE_OBJECT);
static void
ld_symbol_class_init (LdSymbolClass *klass)
{
GObjectClass *object_class;
GParamSpec *pspec;
object_class = G_OBJECT_CLASS (klass);
object_class->get_property = ld_symbol_get_property;
object_class->set_property = ld_symbol_set_property;
/**
* LdSymbol:name:
*
* The name of this symbol.
*/
pspec = g_param_spec_string ("name", "Name",
"The name of this symbol.",
"", G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_NAME, pspec);
/**
* LdSymbol:human-name:
*
* The localized human name of this symbol.
*/
pspec = g_param_spec_string ("human-name", "Human name",
"The localized human name of this symbol.",
"", G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_HUMAN_NAME, pspec);
/**
* LdSymbol:area:
*
* The area of this symbol.
*/
pspec = g_param_spec_boxed ("area", "Area",
"The area of this symbol.",
LD_TYPE_RECTANGLE, G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_AREA, pspec);
/**
* LdSymbol:terminals:
*
* A point array that specifies terminals of this symbol.
*/
pspec = g_param_spec_boxed ("terminals", "Terminals",
"A point array that specifies terminals of this symbol.",
LD_TYPE_POINT_ARRAY, G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_TERMINALS, pspec);
}
static void
ld_symbol_init (LdSymbol *self)
{
}
static void
ld_symbol_get_property (GObject *object, guint property_id,
GValue *value, GParamSpec *pspec)
{
LdSymbol *self;
self = LD_SYMBOL (object);
switch (property_id)
{
case PROP_NAME:
g_value_set_string (value, ld_symbol_get_name (self));
break;
case PROP_HUMAN_NAME:
g_value_set_string (value, ld_symbol_get_human_name (self));
break;
case PROP_AREA:
{
LdRectangle area;
ld_symbol_get_area (self, &area);
g_value_set_boxed (value, &area);
}
break;
case PROP_TERMINALS:
g_value_set_boxed (value, ld_symbol_get_terminals (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ld_symbol_set_property (GObject *object, guint property_id,
const GValue *value, GParamSpec *pspec)
{
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
/**
* ld_symbol_get_name:
* @self: an #LdSymbol object.
*
* Return value: the name of the symbol.
*/
const gchar *
ld_symbol_get_name (LdSymbol *self)
{
LdSymbolClass *klass;
g_return_val_if_fail (LD_IS_SYMBOL (self), NULL);
klass = LD_SYMBOL_GET_CLASS (self);
g_return_val_if_fail (klass->get_name != NULL, NULL);
return klass->get_name (self);
}
/**
* ld_symbol_get_human_name:
* @self: an #LdSymbol object.
*
* Return value: the localised human name of the symbol.
*/
const gchar *
ld_symbol_get_human_name (LdSymbol *self)
{
LdSymbolClass *klass;
g_return_val_if_fail (LD_IS_SYMBOL (self), NULL);
klass = LD_SYMBOL_GET_CLASS (self);
g_return_val_if_fail (klass->get_human_name != NULL, NULL);
return klass->get_human_name (self);
}
/**
* ld_symbol_get_area:
* @self: an #LdSymbol object.
* @area: where the area of the symbol will be returned.
*
* Get the area of the symbol.
*/
void
ld_symbol_get_area (LdSymbol *self, LdRectangle *area)
{
LdSymbolClass *klass;
g_return_if_fail (LD_IS_SYMBOL (self));
g_return_if_fail (area != NULL);
klass = LD_SYMBOL_GET_CLASS (self);
g_return_if_fail (klass->get_area != NULL);
klass->get_area (self, area);
}
/**
* ld_symbol_get_terminals:
* @self: an #LdSymbol object.
*
* Get a list of symbol terminals.
*
* Return value: an #LdPointArray structure.
*/
const LdPointArray *
ld_symbol_get_terminals (LdSymbol *self)
{
LdSymbolClass *klass;
g_return_val_if_fail (LD_IS_SYMBOL (self), NULL);
klass = LD_SYMBOL_GET_CLASS (self);
g_return_val_if_fail (klass->get_terminals != NULL, NULL);
return klass->get_terminals (self);
}
/**
* ld_symbol_draw:
* @self: an #LdSymbol object.
* @cr: a cairo surface to be drawn on.
*
* Draw the symbol onto a Cairo surface.
*/
void
ld_symbol_draw (LdSymbol *self, cairo_t *cr)
{
LdSymbolClass *klass;
g_return_if_fail (LD_IS_SYMBOL (self));
g_return_if_fail (cr != NULL);
klass = LD_SYMBOL_GET_CLASS (self);
g_return_if_fail (klass->draw != NULL);
klass->draw (self, cr);
}
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