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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Author:
* Johan B. C. Engelen
*
* Copyright (C) 2011 Author
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "spinbutton.h"
#include "unit-menu.h"
#include "unit-tracker.h"
#include "util/expression-evaluator.h"
#include "ui/tools/tool-base.h"
namespace Inkscape {
namespace UI {
namespace Widget {
void
SpinButton::connect_signals() {
signal_input().connect(sigc::mem_fun(*this, &SpinButton::on_input));
signal_focus_in_event().connect(sigc::mem_fun(*this, &SpinButton::on_my_focus_in_event));
signal_key_press_event().connect(sigc::mem_fun(*this, &SpinButton::on_my_key_press_event));
gtk_widget_add_events(GTK_WIDGET(gobj()), GDK_SCROLL_MASK | GDK_SMOOTH_SCROLL_MASK);
signal_scroll_event().connect(sigc::mem_fun(*this, &SpinButton::on_scroll_event));
set_focus_on_click(true);
};
int SpinButton::on_input(double* newvalue)
{
try {
Inkscape::Util::EvaluatorQuantity result;
if (_unit_menu || _unit_tracker) {
Unit const *unit = nullptr;
if (_unit_menu) {
unit = _unit_menu->getUnit();
} else {
unit = _unit_tracker->getActiveUnit();
}
Inkscape::Util::ExpressionEvaluator eval = Inkscape::Util::ExpressionEvaluator(get_text().c_str(), unit);
result = eval.evaluate();
// check if output dimension corresponds to input unit
if (result.dimension != (unit->isAbsolute() ? 1 : 0) ) {
throw Inkscape::Util::EvaluatorException("Input dimensions do not match with parameter dimensions.","");
}
} else {
Inkscape::Util::ExpressionEvaluator eval = Inkscape::Util::ExpressionEvaluator(get_text().c_str(), nullptr);
result = eval.evaluate();
}
*newvalue = result.value;
}
catch(Inkscape::Util::EvaluatorException &e) {
g_message ("%s", e.what());
return false;
}
return true;
}
bool SpinButton::on_my_focus_in_event(GdkEventFocus* /*event*/)
{
_on_focus_in_value = get_value();
return false; // do not consume the event
}
bool SpinButton::on_scroll_event(GdkEventScroll *event)
{
if (!is_focus()) {
return false;
}
double step, page;
get_increments(step, page);
if (event->state & GDK_CONTROL_MASK) {
step = page;
}
double change = 0.0;
if (event->direction == GDK_SCROLL_UP) {
change = step;
} else if (event->direction == GDK_SCROLL_DOWN) {
change = -step;
} else if (event->direction == GDK_SCROLL_SMOOTH) {
double delta_y_clamped = CLAMP(event->delta_y, -1, 1); // values > 1 result in excessive changes
change = step * -delta_y_clamped;
} else {
return false;
}
set_value(get_value() + change);
return true;
}
bool SpinButton::on_my_key_press_event(GdkEventKey* event)
{
switch (Inkscape::UI::Tools::get_latin_keyval (event)) {
case GDK_KEY_Escape:
undo();
return true; // I consumed the event
break;
case GDK_KEY_z:
case GDK_KEY_Z:
if (event->state & GDK_CONTROL_MASK) {
undo();
return true; // I consumed the event
}
break;
default:
break;
}
return false; // do not consume the event
}
void SpinButton::undo()
{
set_value(_on_focus_in_value);
}
} // namespace Widget
} // namespace UI
} // namespace Inkscape
/*
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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