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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2024 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING. If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if defined (HAVE_CONFIG_H)
# include "config.h"
#endif
#include <QScrollBar>
#include "Container.h"
#include "SliderControl.h"
#include "QtHandlesUtils.h"
#include "graphics.h"
#include "interpreter.h"
#define RANGE_INT_MAX 1000000
OCTAVE_BEGIN_NAMESPACE(octave)
SliderControl *
SliderControl::create (octave::interpreter& interp,
const graphics_object& go)
{
Object *parent = parentObject (interp, go);
if (parent)
{
Container *container = parent->innerContainer ();
if (container)
return new SliderControl (interp, go,
new QScrollBar (container));
}
return nullptr;
}
SliderControl::SliderControl (octave::interpreter& interp,
const graphics_object& go,
QAbstractSlider *slider)
: BaseControl (interp, go, slider), m_blockUpdates (false)
{
uicontrol::properties& up = properties<uicontrol> ();
slider->setTracking (false);
Matrix bb = up.get_boundingbox ();
bool vertical_slider = ( bb(2) < bb(3) );
slider->setOrientation (vertical_slider ? Qt::Vertical : Qt::Horizontal);
if (vertical_slider)
slider->setInvertedAppearance (true); // Matlab compatibility
Matrix steps = up.get_sliderstep ().matrix_value ();
slider->setMinimum (0);
slider->setMaximum (RANGE_INT_MAX);
slider->setSingleStep (octave::math::round (steps(0) * RANGE_INT_MAX));
slider->setPageStep (octave::math::round (steps(1) * RANGE_INT_MAX));
Matrix value = up.get_value ().matrix_value ();
if (value.numel () > 0)
{
double dmin = up.get_min (), dmax = up.get_max ();
slider->setValue (octave::math::round (((value(0) - dmin) / (dmax - dmin))
* RANGE_INT_MAX));
}
connect (slider, &QAbstractSlider::valueChanged,
this, &SliderControl::valueChanged);
}
SliderControl::~SliderControl ()
{ }
void
SliderControl::update (int pId)
{
uicontrol::properties& up = properties<uicontrol> ();
QScrollBar *slider = qWidget<QScrollBar> ();
switch (pId)
{
case uicontrol::properties::ID_SLIDERSTEP:
{
Matrix steps = up.get_sliderstep ().matrix_value ();
slider->setSingleStep (octave::math::round (steps(0) * RANGE_INT_MAX));
slider->setPageStep (octave::math::round (steps(1) * RANGE_INT_MAX));
}
break;
case uicontrol::properties::ID_VALUE:
{
Matrix value = up.get_value ().matrix_value ();
double dmax = up.get_max (), dmin = up.get_min ();
if (value.numel () > 0)
{
int ival = octave::math::round (((value(0) - dmin) / (dmax - dmin))
* RANGE_INT_MAX);
m_blockUpdates = true;
slider->setValue (ival);
m_blockUpdates = false;
}
}
break;
default:
BaseControl::update (pId);
break;
}
}
void
SliderControl::valueChanged (int ival)
{
if (! m_blockUpdates)
{
gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
octave::autolock guard (gh_mgr.graphics_lock ());
graphics_object go = object ();
if (go.valid_object ())
{
uicontrol::properties& up = Utils::properties<uicontrol> (go);
Matrix value = up.get_value ().matrix_value ();
double dmin = up.get_min (), dmax = up.get_max ();
int ival_tmp = (value.numel () > 0 ?
octave::math::round (((value(0) - dmin) / (dmax - dmin))
* RANGE_INT_MAX) :
0);
if (ival != ival_tmp || value.numel () > 0)
{
double dval = dmin + (ival * (dmax - dmin) / RANGE_INT_MAX);
emit gh_set_event (m_handle, "value", octave_value (dval));
emit gh_callback_event (m_handle, "callback");
}
}
}
}
OCTAVE_END_NAMESPACE(octave)
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