Desktop/sourceforge/geometria/src/ui/render_area.cpp

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/*
This file is part of geometria.

geometria 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 2 of the License, 
or (at your option) any later version.

geometria 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 geometria; if not, write to the Free Software 
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

(c) Philipp Moritz, 2006
*/

#include "render_area.hpp"

#include <QtGui/QtGui>

#include "drawing_context.hpp"
#include "qt_drawing_context.hpp"
#include <boost/shared_ptr.hpp>
#include "../kernel/kernel_fassade.hpp"

#include "../kernel/free_point_algorithm.hpp"

render_area::render_area(QWidget *parent)
:       QWidget(parent), m_dragging_point()
{
        setBackgroundRole(QPalette::Base);
}

render_area::~render_area(void)
{
}


QSize render_area::minimumSizeHint() const
{
    return QSize(0, 0);
}

QSize render_area::sizeHint() const
{
    return QSize(800, 600);
}

void render_area::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing);
        //draw everything...
        boost::shared_ptr<drawing_context> context(new qt_drawing_context(painter));
        kernel_fassade::get_instance().draw_all(context);
}

void render_area::mousePressEvent(QMouseEvent *event)
{
        m_dragging_point = kernel_fassade::get_instance().get_point_at(event->x(), event->y());
        
}
void render_area::mouseMoveEvent(QMouseEvent *event)
{
        if(m_dragging_point != geo_point_ref())
        {
                if(m_dragging_point->is_free_point())
                        m_dragging_point->change_parent_algo(boost::shared_ptr<point_algorithm>(new free_point_algorithm(event->x()/10.0, event->y()/10.0)));
        }
        this->repaint();
}
void render_area::mouseReleaseEvent(QMouseEvent *event)
{
        m_dragging_point = geo_point_ref();
}

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