scalar.cpp

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Authors:
 *   Carl Hetherington <inkscape@carlh.net>
 *   Derek P. Moore <derekm@hackunix.org>
 *   Bryce Harrington <bryce@bryceharrington.org>
 *   Johan Engelen <j.b.c.engelen@alumnus.utwente.nl>
 *
 * Copyright (C) 2004-2011 authors
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#include "scalar.h"
 
#include <cmath>
#include <gtkmm/label.h>
#include <gtkmm/scale.h>
 
#include "spinbutton.h"
#include "ui/pack.h"
 
namespace Inkscape::UI::Widget {
 
Scalar::Scalar(Glib::ustring const &label, Glib::ustring const &tooltip,
               Glib::ustring const &icon,
               bool mnemonic)
    : Scalar{label, tooltip, {}, 0u, icon, mnemonic}
{
}
 
Scalar::Scalar(Glib::ustring const &label, Glib::ustring const &tooltip,
               unsigned digits,
               Glib::ustring const &icon,
               bool mnemonic)
    : Scalar{label, tooltip, {}, digits, icon, mnemonic}
{
}
 
Scalar::Scalar(Glib::ustring const &label, Glib::ustring const &tooltip,
               Glib::RefPtr<Gtk::Adjustment> const &adjust,
               unsigned digits,
               Glib::ustring const &icon,
               bool mnemonic)
    : Labelled(label, tooltip, new SpinButton(adjust, 0.0, digits), icon, mnemonic),
      setProgrammatically(false)
{
}
 
unsigned Scalar::getDigits() const
{
    return getSpinButton().get_digits();
}
 
double Scalar::getStep() const
{
    double step, page;
    getSpinButton().get_increments(step, page);
    return step;
}
 
double Scalar::getPage() const
{
    double step, page;
    getSpinButton().get_increments(step, page);
    return page;
}
 
double Scalar::getRangeMin() const
{
    double min, max;
    getSpinButton().get_range(min, max);
    return min;
}
 
double Scalar::getRangeMax() const
{
    double min, max;
    getSpinButton().get_range(min, max);
    return max;
}
 
double Scalar::getValue() const
{
    return getSpinButton().get_value();
}
 
int Scalar::getValueAsInt() const
{
    return getSpinButton().get_value_as_int();
}
 
 
void Scalar::setDigits(unsigned digits)
{
    return getSpinButton().set_digits(digits);
}
 
void Scalar::setNoLeadingZeros()
{
    if (getDigits()) {
        auto &spin_button = getSpinButton();
        spin_button.set_numeric(false);
        spin_button.signal_output().connect(sigc::mem_fun(*this, &Scalar::setNoLeadingZerosOutput), false);
    }
}
 
bool
Scalar::setNoLeadingZerosOutput()
{
    auto &spin_button = getSpinButton();
    double digits = std::pow(10.0, spin_button.get_digits());
    double val = std::round(spin_button.get_value() * digits) / digits;
    spin_button.set_text(Glib::ustring::format(val));
    return true;
}
 
void 
Scalar::setWidthChars(gint width_chars) {
    getSpinButton().property_width_chars() = width_chars;
}
 
void Scalar::setIncrements(double step, double /*page*/)
{
    getSpinButton().set_increments(step, 0);
}
 
void Scalar::setRange(double min, double max)
{
    getSpinButton().set_range(min, max);
}
 
void Scalar::setValue(double value, bool setProg)
{
    if (setProg) {
        setProgrammatically = true; // callback is supposed to reset back, if it cares
    }
    getSpinButton().set_value(value);
    setProgrammatically = false;
}
 
void Scalar::setWidthChars(unsigned chars)
{
    getSpinButton().set_width_chars(chars);
}
 
void Scalar::update()
{
    getSpinButton().update();
}
 
void Scalar::addSlider()
{
    auto const scale = Gtk::make_managed<Gtk::Scale>(getSpinButton().get_adjustment());
    scale->set_draw_value(false);
    UI::pack_start(*this, *scale);
}
 
Glib::SignalProxy<void()> Scalar::signal_value_changed()
{
    return getSpinButton().signal_value_changed();
}
 
void Scalar::hide_label() {
    if (auto const label = getLabel()) {
        label->set_visible(false);
    }
 
    if (auto const widget = getWidget()) {
        widget->reference();
        remove(*widget);
        widget->set_hexpand();
        UI::pack_end(*this, *widget);
        widget->unreference();
    }
}
 
SpinButton const &Scalar::getSpinButton() const
{
    return dynamic_cast<SpinButton const &>(*getWidget());
}
 
} // namespace Inkscape::UI::Widget
 
/*
  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 :