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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Author:
* Bryce Harrington <bryce@bryceharrington.org>
*
* Copyright (C) 2004 Bryce Harrington
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef INKSCAPE_UI_WIDGET_UNIT_H
#define INKSCAPE_UI_WIDGET_UNIT_H
#include <gtkmm/comboboxtext.h>
#include <gtkmm.h>
#include "util/units.h"
using namespace Inkscape::Util;
namespace Inkscape {
namespace UI {
namespace Widget {
/**
* A drop down menu for choosing unit types.
*/
class UnitMenu : public Gtk::ComboBoxText
{
public:
/**
* Construct a UnitMenu
*/
UnitMenu();
/* GtkBuilder constructor */
UnitMenu(BaseObjectType* cobject, const Glib::RefPtr<Gtk::Builder>& refGlade):Gtk::ComboBoxText(cobject){
UnitMenu();
};
~UnitMenu() override;
/**
* Adds the unit type to the widget. This extracts the corresponding
* units from the unit map matching the given type, and appends them
* to the dropdown widget. It causes the primary unit for the given
* unit_type to be selected.
*/
bool setUnitType(UnitType unit_type);
/**
* Removes all unit entries, then adds the unit type to the widget.
* This extracts the corresponding
* units from the unit map matching the given type, and appends them
* to the dropdown widget. It causes the primary unit for the given
* unit_type to be selected.
*/
bool resetUnitType(UnitType unit_type);
/**
* Adds a unit, possibly user-defined, to the menu.
*/
void addUnit(Unit const& u);
/**
* Sets the dropdown widget to the given unit abbreviation.
* Returns true if the unit was selectable, false if not
* (i.e., if the unit was not present in the widget).
*/
bool setUnit(Glib::ustring const &unit);
/**
* Returns the Unit object corresponding to the current selection
* in the dropdown widget.
*/
Unit const * getUnit() const;
/**
* Returns the abbreviated unit name of the selected unit.
*/
Glib::ustring getUnitAbbr() const;
/**
* Returns the UnitType of the selected unit.
*/
UnitType getUnitType() const;
/**
* Returns the unit factor for the selected unit.
*/
double getUnitFactor() const;
/**
* Returns the recommended number of digits for displaying
* numbers of this unit type.
*/
int getDefaultDigits() const;
/**
* Returns the recommended step size in spin buttons
* displaying units of this type.
*/
double getDefaultStep() const;
/**
* Returns the recommended page size (when hitting pgup/pgdn)
* in spin buttons displaying units of this type.
*/
double getDefaultPage() const;
/**
* Returns the conversion factor required to convert values
* of the currently selected unit into units of type
* new_unit_abbr.
*/
double getConversion(Glib::ustring const &new_unit_abbr, Glib::ustring const &old_unit_abbr = "no_unit") const;
/**
* Returns true if the selected unit is not dimensionless
* (false for %, true for px, pt, cm, etc).
*/
bool isAbsolute() const;
/**
* Returns true if the selected unit is radial (deg or rad).
*/
bool isRadial() const;
protected:
UnitType _type;
/**
* block scroll from widget if is inside a scrolled window.
*/
bool on_scroll_event(GdkEventScroll *event) override;
Gtk::ComboBoxText* _combo;
};
} // namespace Widget
} // namespace UI
} // namespace Inkscape
#endif // INKSCAPE_UI_WIDGET_UNIT_H
/*
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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