git.sesse.net Git - kdenlive/blob - src/abstractmonitor.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Jean-Baptiste Mardelle (jb@kdenlive.org)        *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  18  ***************************************************************************/
  19
  20
  21 #include "abstractmonitor.h"
  22
  23
  24 VideoPreviewContainer::VideoPreviewContainer(QWidget *parent) :
  25     QFrame(parent),
  26     m_image(new QImage())
  27 {
  28     setFrameShape(QFrame::NoFrame);
  29     setFocusPolicy(Qt::ClickFocus);
  30     setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
  31 }
  32
  33
  34 void VideoPreviewContainer::setImage(QImage img)
  35 {
  36         if (m_image) delete m_image;
  37         m_image = new QImage(img);
  38         update();
  39 }
  40
  41 // virtual
  42 void VideoPreviewContainer::paintEvent(QPaintEvent */*event*/)
  43 {
  44         if (m_image->isNull()) return;
  45         QPainter painter(this);
  46         double ar = (double) m_image->width() / m_image->height();
  47         QRect rect = this->frameRect();
  48         int paintW = rect.height() * ar + 0.5;
  49         if (paintW > rect.width()) {
  50             paintW = rect.width() / ar + 0.5;
  51             int diff = (rect.height() - paintW)  / 2;
  52             rect.adjust(0, diff, 0, 0);
  53             rect.setHeight(paintW);
  54         }
  55         else {
  56             int diff = (rect.width() - paintW)  / 2;
  57             rect.adjust(diff, 0, 0, 0);
  58             rect.setWidth(paintW);
  59         }
  60
  61         painter.drawImage(rect, *m_image);
  62 }
  63
  64