BackgroundStateAbstractBase.cpp

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#include "BackgroundStateAbstractBase.h"
#include "DataKey.h"
#include "EngaugeAssert.h"
#include "GraphicsItemType.h"
#include "GraphicsScene.h"
#include "Logger.h"
#include "ZValues.h"
 
BackgroundStateAbstractBase::BackgroundStateAbstractBase(BackgroundStateContext &context,
                                                         GraphicsScene &scene) :
  m_context (context),
  m_scene (scene),
  m_imageItem (nullptr)
{
  // Create an image but do not show it until the appropriate state is reached
  QPixmap dummy;
  m_imageItem = m_scene.addPixmap (dummy);
  m_imageItem->setVisible (false);
  m_imageItem->setZValue (Z_VALUE_BACKGROUND);
  m_imageItem->setData (DATA_KEY_IDENTIFIER, "view");
  m_imageItem->setData (DATA_KEY_GRAPHICS_ITEM_TYPE, GRAPHICS_ITEM_TYPE_IMAGE);
}
 
BackgroundStateAbstractBase::~BackgroundStateAbstractBase()
{
}
 
BackgroundStateContext &BackgroundStateAbstractBase::context()
{
  return m_context;
}
 
const BackgroundStateContext &BackgroundStateAbstractBase::context() const
{
  return m_context;
}
 
QImage BackgroundStateAbstractBase::image () const
{
  return m_image;
}
 
QGraphicsPixmapItem &BackgroundStateAbstractBase::imageItem () const
{
  return *m_imageItem;
}
 
GraphicsScene &BackgroundStateAbstractBase::scene()
{
  return m_scene;
}
 
const GraphicsScene &BackgroundStateAbstractBase::scene() const
{
  return m_scene;
}
 
void BackgroundStateAbstractBase::setImageVisible (bool visible)
{
  m_imageItem->setVisible (visible);
}
 
void BackgroundStateAbstractBase::setProcessedPixmap (const QPixmap &pixmap)
{
  LOG4CPP_INFO_S ((*mainCat)) << "BackgroundStateAbstractBase::setProcessedPixmap"
                              << " map=(" << pixmap.width() << "x" << pixmap.height() << ")";
 
  ENGAUGE_CHECK_PTR(m_imageItem);
 
  m_imageItem->setPixmap (pixmap);
 
  // Reset scene rectangle or else small image after large image will be off-center
  m_scene.setSceneRect (m_imageItem->boundingRect ());
 
  m_image = pixmap.toImage();
}