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

   1 /***************************************************************************
   2  *   Copyright (C) 2010 by Till Theato (root@ttill.de)                     *
   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 "monitorscene.h"
  22 #include "renderer.h"
  23
  24 #include <QGraphicsView>
  25 #include <QGraphicsPixmapItem>
  26 #include <QtCore>
  27
  28 MonitorScene::MonitorScene(Render *renderer, QObject* parent) :
  29         QGraphicsScene(parent),
  30         m_renderer(renderer)
  31 {
  32 }
  33
  34 void MonitorScene::setUp()
  35 {
  36     setBackgroundBrush(QBrush(QColor(0, 0, 255)));
  37
  38     QPen framepen(Qt::DotLine);
  39     framepen.setColor(Qt::red);
  40
  41     m_frameBorder = new QGraphicsRectItem(QRectF(0, 0, m_renderer->renderWidth(), m_renderer->renderHeight()));
  42     m_frameBorder->setPen(framepen);
  43     m_frameBorder->setZValue(-9);
  44     m_frameBorder->setBrush(Qt::transparent);
  45     m_frameBorder->setFlags(0);
  46     addItem(m_frameBorder);
  47
  48     m_lastUpdate.start();
  49     m_background = new QGraphicsPixmapItem();
  50     m_background->setZValue(-10);
  51     m_background->setFlags(0);
  52     QPixmap bg(m_renderer->renderWidth(), m_renderer->renderHeight());
  53     bg.fill();
  54     m_background->setPixmap(bg);
  55     addItem(m_background);
  56
  57     connect(m_renderer, SIGNAL(rendererPosition(int)), this, SLOT(slotUpdateBackground()));
  58     connect(m_renderer, SIGNAL(frameUpdated(int)), this, SLOT(slotUpdateBackground()));
  59     slotUpdateBackground();
  60     views().at(0)->fitInView(m_frameBorder, Qt::KeepAspectRatio);
  61     views().at(0)->centerOn(m_frameBorder);
  62 }
  63
  64 void MonitorScene::slotUpdateBackground()
  65 {
  66     if (views().count() > 0 && views().at(0)->isVisible()) {
  67         if (m_lastUpdate.elapsed() > 200) {
  68             m_background->setPixmap(QPixmap::fromImage(m_renderer->extractFrame(m_renderer->seekFramePosition())));
  69             views().at(0)->fitInView(m_frameBorder, Qt::KeepAspectRatio);
  70             views().at(0)->centerOn(m_frameBorder);
  71             m_lastUpdate.start();
  72         }
  73     }
  74 }
  75
  76 void MonitorScene::mousePressEvent(QGraphicsSceneMouseEvent* event)
  77 {
  78     QGraphicsScene::mousePressEvent(event);
  79 }
  80
  81
  82 void MonitorScene::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
  83 {
  84     QGraphicsScene::mouseReleaseEvent(event);
  85     emit actionFinished();
  86 }
  87
  88 #include "monitorscene.moc"