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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Authors:
* Nicholas Bishop <nicholasbishop@gmail.com>
* Rodrigo Kumpera <kumpera@gmail.com>
*
* Copyright (C) 2007 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef INKSCAPE_UI_WIDGET_ATTR_WIDGET_H
#define INKSCAPE_UI_WIDGET_ATTR_WIDGET_H
#include "attributes.h"
#include "object/sp-object.h"
#include "xml/node.h"
namespace Inkscape {
namespace UI {
namespace Widget {
enum DefaultValueType
{
T_NONE,
T_DOUBLE,
T_VECT_DOUBLE,
T_BOOL,
T_UINT,
T_CHARPTR
};
/**
* Very basic interface for classes that control attributes.
*/
class DefaultValueHolder
{
DefaultValueType type;
union {
double d_val;
std::vector<double>* vt_val;
bool b_val;
unsigned int uint_val;
char* cptr_val;
} value;
//FIXME remove copy ctor and assignment operator as private to avoid double free of the vector
public:
DefaultValueHolder () {
type = T_NONE;
}
DefaultValueHolder (double d) {
type = T_DOUBLE;
value.d_val = d;
}
DefaultValueHolder (std::vector<double>* d) {
type = T_VECT_DOUBLE;
value.vt_val = d;
}
DefaultValueHolder (char* c) {
type = T_CHARPTR;
value.cptr_val = c;
}
DefaultValueHolder (bool d) {
type = T_BOOL;
value.b_val = d;
}
DefaultValueHolder (unsigned int ui) {
type = T_UINT;
value.uint_val = ui;
}
~DefaultValueHolder() {
if (type == T_VECT_DOUBLE)
delete value.vt_val;
}
unsigned int as_uint() {
g_assert (type == T_UINT);
return value.uint_val;
}
bool as_bool() {
g_assert (type == T_BOOL);
return value.b_val;
}
double as_double() {
g_assert (type == T_DOUBLE);
return value.d_val;
}
std::vector<double>* as_vector() {
g_assert (type == T_VECT_DOUBLE);
return value.vt_val;
}
char* as_charptr() {
g_assert (type == T_CHARPTR);
return value.cptr_val;
}
};
class AttrWidget
{
public:
AttrWidget(const SPAttr a, unsigned int value)
: _attr(a),
_default(value)
{}
AttrWidget(const SPAttr a, double value)
: _attr(a),
_default(value)
{}
AttrWidget(const SPAttr a, bool value)
: _attr(a),
_default(value)
{}
AttrWidget(const SPAttr a, char* value)
: _attr(a),
_default(value)
{}
AttrWidget(const SPAttr a)
: _attr(a),
_default()
{}
virtual ~AttrWidget()
= default;
virtual Glib::ustring get_as_attribute() const = 0;
virtual void set_from_attribute(SPObject*) = 0;
SPAttr get_attribute() const
{
return _attr;
}
sigc::signal<void>& signal_attr_changed()
{
return _signal;
}
protected:
DefaultValueHolder* get_default() { return &_default; }
const gchar* attribute_value(SPObject* o) const
{
const gchar* name = (const gchar*)sp_attribute_name(_attr);
if(name && o) {
const gchar* val = o->getRepr()->attribute(name);
return val;
}
return nullptr;
}
private:
const SPAttr _attr;
DefaultValueHolder _default;
sigc::signal<void> _signal;
};
}
}
}
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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