MouseModeActionGroup.cc

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/*

Copyright (C) 2011-2018 Michael Goffioul

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 <QAction>
#include <QIcon>

#include "Figure.h"
#include "MouseModeActionGroup.h"

namespace QtHandles
{

  MouseModeActionGroup::MouseModeActionGroup (QObject *xparent)
    : QObject (xparent), m_current (nullptr)
  {
    m_actions.append (new QAction (QIcon (":/images/rotate.png"),
                                   tr ("Rotate"), this));
    QAction *zoom_in = new QAction ("Z+", this);
    zoom_in->setToolTip (tr ("Zoom In"));
    m_actions.append (zoom_in);

    QAction *zoom_out = new QAction ("Z-", this);
    zoom_out->setToolTip (tr ("Zoom Out"));
    m_actions.append (zoom_out);

    m_actions.append (new QAction (QIcon (":/images/pan.png"),
                                   tr ("Pan"), this));
    m_actions.append (new QAction (QIcon::fromTheme ("insert-text"),
                                   tr ("Insert Text"), this));
    m_actions.append (new QAction (QIcon (":/images/select.png"),
                                   tr ("Select"), this));

    foreach (QAction *a, m_actions)
      {
        a->setCheckable (true);
        connect (a, SIGNAL (toggled (bool)), this, SLOT (actionToggled (bool)));
      }
  }

  MouseModeActionGroup::~MouseModeActionGroup (void)
  { }

  void
  MouseModeActionGroup::actionToggled (bool checked)
  {
    if (! checked)
      {
        if (sender () == m_current)
          {
            m_current = nullptr;
            emit modeChanged (NoMode);
          }
      }
    else
      {
        int i = m_actions.indexOf (qobject_cast<QAction *> (sender ()));

        if (i >= 0)
          {
            m_current = m_actions[i];
            for (int j = 0; j < m_actions.size (); j++)
              {
                // SelectMode cancels all the others but the button
                // doesn't remain highlighed.

                if (j != i || i+1 == SelectMode)
                  m_actions[j]->setChecked (false);
              }

            emit modeChanged (static_cast<MouseMode> (i+1));
          }
      }
  }

  void
  MouseModeActionGroup::setMode (MouseMode mode)
  {
    for (int i = 0; i < m_actions.size (); i++)
      m_actions[i]->setChecked (i+1 == mode);

    // SelectMode cancels all the others but the button doesn't remain
    // highlighed.

    if (mode == SelectMode)
      m_actions[SelectMode-1]->setChecked (false);
  }

};