/*
    Scan Tailor - Interactive post-processing tool for scanned pages.
    Copyright (C) 2007-2015  Joseph Artsimovich <joseph.artsimovich@gmail.com>

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

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "PixmapRenderer.h"
#include <QPainter>
#include <QPixmap>
#include <QTransform>
#include <QRect>
#include <QRectF>

void
PixmapRenderer::drawPixmap(
    QPainter& painter, QPixmap const& pixmap)
{
    QTransform const inv_transform(painter.worldTransform().inverted());
    QRectF const src_rect(inv_transform.map(QRectF(painter.viewport())).boundingRect());
    QRectF const bounded_src_rect(src_rect.intersected(pixmap.rect()));
    painter.drawPixmap(bounded_src_rect, pixmap, bounded_src_rect);
}
