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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Authors:
* Nicholas Bishop <nicholasbishop@gmail.com>
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
*
* Copyright (C) 2007 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef INKSCAPE_UI_WIDGET_COMBO_ENUMS_H
#define INKSCAPE_UI_WIDGET_COMBO_ENUMS_H
#include "ui/widget/labelled.h"
#include <gtkmm/combobox.h>
#include <gtkmm/liststore.h>
#include "attr-widget.h"
#include "util/enums.h"
#include <glibmm/i18n.h>
namespace Inkscape {
namespace UI {
namespace Widget {
/**
* Simplified management of enumerations in the UI as combobox.
*/
template<typename E> class ComboBoxEnum : public Gtk::ComboBox, public AttrWidget
{
public:
ComboBoxEnum(E default_value, const Util::EnumDataConverter<E>& c, const SPAttr a = SPAttr::INVALID, bool sort = true, const char* translation_context = nullptr) :
ComboBoxEnum(c, a, sort, translation_context, static_cast<unsigned int>(default_value))
{
set_active_by_id(default_value);
sort_items();
}
ComboBoxEnum(const Util::EnumDataConverter<E>& c, const SPAttr a = SPAttr::INVALID, bool sort = true, const char* translation_context = nullptr) :
ComboBoxEnum(c, a, sort, translation_context, 0)
{
set_active(0);
sort_items();
}
private:
int on_sort_compare(const Gtk::TreeModel::iterator& a, const Gtk::TreeModel::iterator& b) {
Glib::ustring an=(*a)[_columns.label];
Glib::ustring bn=(*b)[_columns.label];
return an.compare(bn);
}
bool _sort;
ComboBoxEnum(const Util::EnumDataConverter<E>& c, const SPAttr a, bool sort, const char* translation_context, unsigned int default_value)
: AttrWidget(a, default_value)
, setProgrammatically(false)
, _converter(c)
{
_sort = sort;
signal_changed().connect(signal_attr_changed().make_slot());
gtk_widget_add_events(GTK_WIDGET(gobj()), GDK_SCROLL_MASK | GDK_SMOOTH_SCROLL_MASK);
signal_scroll_event().connect(sigc::mem_fun(*this, &ComboBoxEnum<E>::on_scroll_event));
_model = Gtk::ListStore::create(_columns);
set_model(_model);
pack_start(_columns.label);
// Initialize list
for(int i = 0; i < static_cast<int>(_converter._length); ++i) {
Gtk::TreeModel::Row row = *_model->append();
const Util::EnumData<E>* data = &_converter.data(i);
row[_columns.data] = data;
auto label = _converter.get_label(data->id);
auto trans = translation_context ?
g_dpgettext2(nullptr, translation_context, label.c_str()) :
gettext(label.c_str());
row[_columns.label] = trans;
row[_columns.is_separator] = _converter.get_key(data->id) == "-";
}
set_row_separator_func(sigc::mem_fun(*this, &ComboBoxEnum<E>::combo_separator_func));
}
void sort_items() {
// Sort the list
if (_sort) {
_model->set_default_sort_func(sigc::mem_fun(*this, &ComboBoxEnum<E>::on_sort_compare));
_model->set_sort_column(_columns.label, Gtk::SORT_ASCENDING);
}
}
public:
Glib::ustring get_as_attribute() const override
{
return get_active_data()->key;
}
void set_from_attribute(SPObject* o) override
{
setProgrammatically = true;
const gchar* val = attribute_value(o);
if(val)
set_active_by_id(_converter.get_id_from_key(val));
else
set_active(get_default()->as_uint());
}
const Util::EnumData<E>* get_active_data() const
{
Gtk::TreeModel::iterator i = this->get_active();
if(i)
return (*i)[_columns.data];
return nullptr;
}
void add_row(const Glib::ustring& s)
{
Gtk::TreeModel::Row row = *_model->append();
row[_columns.data] = 0;
row[_columns.label] = s;
}
void remove_row(E id) {
Gtk::TreeModel::iterator i;
for(i = _model->children().begin(); i != _model->children().end(); ++i) {
const Util::EnumData<E>* data = (*i)[_columns.data];
if(data->id == id)
break;
}
if(i != _model->children().end())
_model->erase(i);
}
void set_active_by_id(E id) {
setProgrammatically = true;
auto index = get_active_by_id(id);
if (index >= 0) {
set_active(index);
}
};
bool on_scroll_event(GdkEventScroll *event) override { return false; }
void set_active_by_key(const Glib::ustring& key) {
setProgrammatically = true;
set_active_by_id( _converter.get_id_from_key(key) );
};
bool combo_separator_func(const Glib::RefPtr<Gtk::TreeModel>& model,
const Gtk::TreeModel::iterator& iter) {
return (*iter)[_columns.is_separator];
};
bool setProgrammatically;
private:
int get_active_by_id(E id) const {
int index = 0;
for (auto&& child : _model->children()) {
const Util::EnumData<E>* data = child[_columns.data];
if (data->id == id) {
return index;
}
++index;
}
return -1;
};
class Columns : public Gtk::TreeModel::ColumnRecord
{
public:
Columns()
{
add(data);
add(label);
add(is_separator);
}
Gtk::TreeModelColumn<const Util::EnumData<E>*> data;
Gtk::TreeModelColumn<Glib::ustring> label;
Gtk::TreeModelColumn<bool> is_separator;
};
Columns _columns;
Glib::RefPtr<Gtk::ListStore> _model;
const Util::EnumDataConverter<E>& _converter;
};
/**
* Simplified management of enumerations in the UI as combobox.
*/
template<typename E> class LabelledComboBoxEnum : public Labelled
{
public:
LabelledComboBoxEnum( Glib::ustring const &label,
Glib::ustring const &tooltip,
const Util::EnumDataConverter<E>& c,
Glib::ustring const &suffix = "",
Glib::ustring const &icon = "",
bool mnemonic = true,
bool sorted = true)
: Labelled(label, tooltip, new ComboBoxEnum<E>(c, SPAttr::INVALID, sorted), suffix, icon, mnemonic)
{
}
ComboBoxEnum<E>* getCombobox() {
return static_cast< ComboBoxEnum<E>* > (_widget);
}
};
}
}
}
#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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