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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/

/***************************************************************************
                          navigator.cpp  -  description
                             -------------------
    begin                : Fri Feb 22 2002
    copyright            : (C) 2002 by Franz Schmid
    email                : Franz.Schmid@altmuehlnet.de
 ***************************************************************************/


/***************************************************************************
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 ***************************************************************************/


#include "navigator.h"

#include <QPixmap>
#include <QMouseEvent>
#include <QLabel>
#include <QPaintEvent>
#include <QPainter>
#include "scribusview.h"
#include "util_ghostscript.h"

Navigator::Navigator(QWidget *parent, int size, int pageNr, ScribusView* view, const QString& fn) : QLabel(parent),
        m_view(view)
{
        setScaledContents(false);
        setAlignment(Qt::AlignLeft | Qt::AlignTop);
        if (!fn.isEmpty())
        {
                QPixmap img = loadPDF(fn, pageNr, size, &Width, &Height);
                if (!img.isNull())
                        pmx = img;
                else
                        pmx = loadPDF(fn, 1, size, &Width, &Height);
        }
        else
                pmx = QPixmap::fromImage(view->PageToPixmap(pageNr, size));
        resize(pmx.width(), pmx.height());
        Xp = 0;
        Yp = 0;
        drawMark(0, 0);
}

void Navigator::mouseMoveEvent(QMouseEvent *m)
{
        drawMark(m->x(), m->y());
        emit Coords(static_cast<double>(m->x()) / static_cast<double>(pmx.width()),
                            static_cast<double>(m->y()) / static_cast<double>(pmx.height()));
}

void Navigator::mousePressEvent(QMouseEvent *m)
{
        drawMark(m->x(), m->y());
        emit Coords(static_cast<double>(m->x()) / static_cast<double>(pmx.width()),
                            static_cast<double>(m->y()) / static_cast<double>(pmx.height()));
}

void Navigator::mouseReleaseEvent(QMouseEvent *m)
{
        emit Coords(static_cast<double>(m->x()) / static_cast<double>(pmx.width()),
                            static_cast<double>(m->y()) / static_cast<double>(pmx.height()));
}

void Navigator::paintEvent(QPaintEvent *e)
{
        QPainter p;
        p.begin(this);
        p.setBackground(QColor(255, 255, 255));
        p.eraseRect(pmx.rect());
        p.setClipRect(pmx.rect());
        p.drawPixmap(0, 0, pmx);
        p.setPen(QPen(QColor(Qt::black), 1, Qt::SolidLine, Qt::FlatCap, Qt::MiterJoin));
        p.drawLine(Xp - 5, Yp - 5, Xp - 1, Yp - 1);
        p.drawLine(Xp - 5, Yp + 5, Xp - 1, Yp + 1);
        p.drawLine(Xp + 2, Yp + 2, Xp + 6, Yp + 6);
        p.drawLine(Xp + 2, Yp - 2, Xp + 6, Yp - 6);
        p.end();
}

void Navigator::drawMark(int x, int y)
{
        Xp = x;
        Yp = y;
        repaint();
}

bool Navigator::setPage(int pageNr, int size, const QString& fn)
{
        bool ret = false;
        if (!fn.isEmpty())
        {
                QPixmap img = loadPDF(fn, pageNr, size, &Width, &Height);
                if (!img.isNull())
                {
                        pmx = img;
                        ret = true;
                }
                else
                        pmx = loadPDF(fn, 1, size, &Width, &Height);
        }
        else
        {
                pmx = QPixmap::fromImage(m_view->PageToPixmap(pageNr, size));
                ret = true;
        }
        resize(pmx.width(), pmx.height());
        repaint();
        return ret;
}