more mouse interaction features for Qt plotting widget * graphics.in.h, graphics.cc (figure::properties::__mouse_mode__, figure::properties::__pan_mode__, figure::properties::__rotate_mode__, figure::properties::__zoom_mode__): New properties. (figure::properties::set___mouse_mode__): New function. (axes::properties::pan, axes::properties::rotate3d, axes::properties::zoom): New functions. Handle zoom, and pan modes. (axes::properties::clear_zoom_stack): New arg, do_unzoom. Conditionally call unzoom. (axes::properties::unzoom): Also restore view property. (axes::properties::rotate_view): Conditionall save state to zoom stack. (axes::properties::push_zoom_stack): New function. (axes::properties::pan, axes::properties::rotate3d): Delete properties. (axes::properties::update_xlim, axes::properties::update_ylim, axes::properties::update_zlim): Don't clear zoom stack. Delete do_clr_zoom argument. (axes::properties::set_pan, axes::properties::set_rotate3d): Delete. (F__zoom__): New function. * Canvas.h, Canvas.cc (Canvas::toggleAxes, Canvas::toggleGrid): New pure virtual functions. (Canvas::setCursor, Canvas::canvasToggleAxes, Canvas::canvasToggleGrid, Canvas::canvasMouseDoubleClickEvent, Canvas::canvasWheelEvent): New functions. (zoom_enabled, pan_enabled, pan_mode, rotate_enabled, rotate_mode): New static functions. (Canvas::canvasMouseMoveEvent): Call axes::properties::rotate3d to do rotation. Handle panning. (Canvas::canvasMousePressEvent): Also handle "unzoom" action when in pan and rotate modes. (Canvas::canvasMouseReleaseEvent): Zoom by factor if mouse has not moved from mouse press event. * Figure.h, Figure.cc (MouseMode): New enum value, TextMode. (Figure::m_mouseMode, Figure::m_lastMouseMode): Delete member variables. (Figure::mouseMode, Figure::setMouseMode): Get info from and save info to figure properties. (Figure::updateFigureToolBarAndMenuBar, Figure::toggleAxes, Figure::toggleGrid): New functions. (Figure::m_mouseModeGroup): New member variable. (Figure::createFigureToolBarAndMenuBar): Add actions for toggling Axes and Grid. Maintain pointer to MouseModeActionGroup. (mouse_mode_to_string, mouse_mode_from_string): New functions. * GLCanvas.h, GLCanvas.cc (GLCanvas::toggleAxes, GLCanvas::ToggleGrid, GLCanvas::mouseDoubleClickEvent, GLCanvas::wheelEvent): New functions. * MouseModeActionGroup.h, MouseModeActionGroup.cc (MouseModeActionGroup::mouseMode): Delete. (MouseModeActionGroup::setMode): New function. (MouseModeActionGroup::MouseModeActionGroup): Also include action to insert text in the list. * figure.m: Set default pan, rotate, and zoom mode properties for the figure object. * pan.m, rotate3d.m, zoom.m: Improve compatibility with Matlab. Set mode properties for figure. * __init_fltk__.cc: Cope with changes to graphics properties.

/*

Copyright (C) 2011-2014 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
<http://www.gnu.org/licenses/>.

*/

#ifdef 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 (0)
{
  m_actions.append (new QAction (QIcon (":/images/rotate.png"),
                                 tr ("Rotate"), this));
  m_actions.append (new QAction (QIcon (":/images/zoom.png"),
                                 tr ("Zoom"), this));
  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));

  m_actions[3]->setEnabled (false);
  m_actions[4]->setEnabled (false);

  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 = 0;
          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++)
            if (j != i)
              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 == mode - 1);
}
  
};