cxLayoutEditorWidget.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, 
   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
=========================================================================*/
#include "cxLayoutEditorWidget.h"
#include <iostream>
#include <QtWidgets>

#include "cxTypeConversions.h"
#include "cxDefinitionStrings.h"
#include "cxUtilHelpers.h"
#include "cxViewService.h"
#include "cxBoolProperty.h"
#include "cxHelperWidgets.h"

namespace cx
{


LayoutEditorWidget::LayoutEditorWidget(ViewServicePtr viewService, QWidget* parent) :
  QWidget(parent),
  mViewService(viewService)
{
  mTopLayout = new QVBoxLayout(this);
  QHBoxLayout* nameLayout = new QHBoxLayout;
  mTopLayout->addLayout(nameLayout);
  mRCLayout = new QHBoxLayout;
  mTopLayout->addLayout(mRCLayout);
  mLayout = new QGridLayout;
  mLayout->setMargin(0);
  mLayout->setSpacing(2);
  mTopLayout->addLayout(mLayout);

  mNameEdit = new QLineEdit;
  connect(mNameEdit, SIGNAL(editingFinished()), this, SLOT(nameChanged()));
  nameLayout->addWidget(new QLabel("Name"));
  nameLayout->addWidget(mNameEdit);


  // create the row/column bar
  mRowsEdit = new QSpinBox;
  mRowsEdit->setRange(1,LayoutData::MaxGridSize);
  mColsEdit = new QSpinBox;
  mColsEdit->setRange(1,LayoutData::MaxGridSize);
  connect(mRowsEdit, SIGNAL(valueChanged(int)), this, SLOT(rowsColumnsChangedSlot()));
  connect(mColsEdit, SIGNAL(valueChanged(int)), this, SLOT(rowsColumnsChangedSlot()));
  mRCLayout->addWidget(new QLabel("Rows"));
  mRCLayout->addWidget(mRowsEdit);
  mRCLayout->addWidget(new QLabel("Columns"));
  mRCLayout->addWidget(mColsEdit);
  mRCLayout->addStretch();

  for (int i=ptNOPLANE+1; i<ptCOUNT; ++i)
  {
    PLANE_TYPE type = static_cast<PLANE_TYPE>(i);
    mPlaneNames[type] = qstring_cast(type);
    mViewNames.push_back(ViewNamesType(type,View::VIEW_2D, qstring_cast(type)));
  }
  mViewNames.push_back(ViewNamesType(ptNOPLANE,View::VIEW_3D, "3D"));
  mViewNames.push_back(ViewNamesType(ptNOPLANE,View::VIEW_REAL_TIME, "RT"));
//  mPlaneNames[ptNOPLANE] = "3D";
//  mPlaneNames[static_cast<PLANE_TYPE>(-1)] = "RT";

  mSelection = LayoutRegion(-1,-1);
  initCache();

  mOffScreenRendering = BoolProperty::initialize("Offscreeen Render", "",
                                                                                           "Render the layout to memory only.\n"
                                                                                           "This will cause the displayed area to be black,\n"
                                                                                           "but the application can access the rendering programatically.",
                                                                                           false);
  mTopLayout->addWidget(sscCreateDataWidget(this, mOffScreenRendering));
  connect(mOffScreenRendering.get(), &BoolProperty::changed, this, &LayoutEditorWidget::onOffScreenRenderingChanged);


  this->updateGrid();
}

void LayoutEditorWidget::setLayoutData(const LayoutData& data)
{
  mViewData = data;
  this->updateGrid();
}

LayoutData LayoutEditorWidget::getLayoutData() const
{
  return mViewData;
}

void LayoutEditorWidget::onOffScreenRenderingChanged()
{
        mViewData.setOffScreenRendering(mOffScreenRendering->getValue());
}

void LayoutEditorWidget::nameChanged()
{
  mViewData.setName(mNameEdit->text());
}

void LayoutEditorWidget::contextMenuSlot(const QPoint& point)
{
  //QWidget* sender = dynamic_cast<QWidget*>(this->sender());
  QPoint pointGlobal = this->mapToGlobal(point);
  QMenu menu(this);

  LayoutViewData viewData = this->getViewData(point);

  QAction* mergeAction = new QAction("merge view", &menu);
  mergeAction->setEnabled(this->getSelectedViews().size()>1);
  connect(mergeAction, SIGNAL(triggered()), this, SLOT(mergeActionSlot()));
  menu.addAction(mergeAction);

  QAction* splitAction = new QAction("split view", &menu);
  splitAction->setEnabled(mSelection.span.row!=1 || mSelection.span.col!=1);
  connect(splitAction, SIGNAL(triggered()), this, SLOT(splitActionSlot()));
  menu.addAction(splitAction);

  menu.addSeparator();

  // actions for view group
//  int viewGroupCount = static_cast<int>(viewService()->getViewGroups().size());
  int viewGroupCount = mViewService->groupCount();
  QActionGroup* groupActions = new QActionGroup(this);
  for (int i=0; i<viewGroupCount; ++i)
  {
    QAction* action = new QAction(QString("Group %1").arg(i), groupActions);
    action->setData(QVariant(i));
    action->setCheckable(true);
    connect(action, SIGNAL(triggered()), this, SLOT(groupActionSlot()));
    action->setChecked(viewData.mGroup==i);
//    menu.addAction(action);
  }

  //menu.addMenu("View Group")->addActions(groupActions->actions());
  menu.addActions(groupActions->actions());
  menu.addSeparator();

  // actions for view type
  QActionGroup* typeActions = new QActionGroup(this);
//  for (std::map<PLANE_TYPE, QString>::iterator iter=mPlaneNames.begin(); iter!=mPlaneNames.end(); ++iter)
  for (unsigned i=0; i<mViewNames.size(); ++i)
  {
    ViewNamesType current = mViewNames[i];
//    PLANE_TYPE type = static_cast<PLANE_TYPE>(i);
//    PLANE_TYPE type = iter->first;
//    QString name = iter->second;

    QAction* action = new QAction(QString("%1").arg(current.mName), typeActions);
//    action->setData(QVariant(t));
    action->setCheckable(true);
    connect(action, SIGNAL(triggered()), this, SLOT(typeActionSlot()));
    action->setChecked(viewData.mPlane==current.mPlane && viewData.mType==current.mView);
  }
//  for (int i=ptNOPLANE; i<ptCOUNT; ++i)
//  {
//    PLANE_TYPE type = static_cast<PLANE_TYPE>(i);
//
//    QAction* action = new QAction(QString("%1").arg(mPlaneNames[type]), typeActions);
//    action->setData(QVariant(i));
//    action->setCheckable(true);
//    connect(action, SIGNAL(triggered()), this, SLOT(typeActionSlot()));
//    action->setChecked(viewData.mPlane==type);
//    //menu.addAction(action);
//  }

  //menu.addMenu("View Plane Type")->addActions(typeActions->actions());
  menu.addActions(typeActions->actions());

  menu.exec(pointGlobal);
}

void LayoutEditorWidget::splitActionSlot()
{
  mViewData.split(mSelection);
  this->updateGrid();
}

void LayoutEditorWidget::mergeActionSlot()
{
  mViewData.merge(mSelection);
  this->updateGrid();
}

void LayoutEditorWidget::groupActionSlot()
{
  QAction* sender = dynamic_cast<QAction*>(this->sender());
  if (!sender)
    return;
  int group = sender->data().toInt();

  std::set<LayoutData::iterator> selection = this->getSelectedViews();
  for (std::set<LayoutData::iterator>::iterator iter=selection.begin(); iter!=selection.end(); ++iter)
    (*iter)->mGroup = group;

  this->updateGrid();
}

void LayoutEditorWidget::typeActionSlot()
{
  QAction* sender = dynamic_cast<QAction*>(this->sender());
  if (!sender)
    return;
//  PLANE_TYPE type = static_cast<PLANE_TYPE>(sender->data().toInt());
  ViewNamesType type;
  for (unsigned i=0; i<mViewNames.size(); ++i)
    if (mViewNames[i].mName == sender->text())
      type=mViewNames[i];

  std::set<LayoutData::iterator> selection = this->getSelectedViews();
  for (std::set<LayoutData::iterator>::iterator iter=selection.begin(); iter!=selection.end(); ++iter)
  {
    (*iter)->mPlane = type.mPlane;
    (*iter)->mType = type.mView;
  }

  this->updateGrid();
}

void LayoutEditorWidget::mouseMoveEvent(QMouseEvent* event)
{
  this->updateSelection(event->pos());
}

void LayoutEditorWidget::updateSelection(QPoint pos)
{
  LayoutViewData start = this->getViewData(mClickPos);
  LayoutViewData stop = this->getViewData(pos);
  mSelection = merge(start.mRegion, stop.mRegion);
  this->colorRegion(mSelection, "dimgrey", "lightgrey");
}

/* Return a set of unique iterators into the layout data,
 * representing the selected region.
 */
std::set<LayoutData::iterator> LayoutEditorWidget::getSelectedViews()
{
  std::set<LayoutData::iterator> retval;
  for (int r=mSelection.pos.row; r<mSelection.pos.row+mSelection.span.row; ++r)
    for (int c=mSelection.pos.col; c<mSelection.pos.col+mSelection.span.col; ++c)
      retval.insert(mViewData.find(LayoutPosition(r,c)));
  return retval;
}

void LayoutEditorWidget::mousePressEvent(QMouseEvent* event)
{
  mClickPos = event->pos();

  if (event->button()==Qt::RightButton)
  {
    // reselect if click is outside old selection
    if (!mSelection.contains(this->getViewData(mClickPos).mRegion.pos))
      this->updateSelection(event->pos());

    //std::cout << "mouse press context" << std::endl;
    this->contextMenuSlot(event->pos());
  }
  else
  {
    //std::cout << "mouse press clean" << std::endl;
    this->updateSelection(event->pos());
  }
}

void LayoutEditorWidget::colorRegion(LayoutRegion region, QString selectColor, QString backColor)
{
  for (LayoutData::iterator iter=mViewData.begin(); iter!=mViewData.end(); ++iter)
  {
    LayoutPosition pos = iter->mRegion.pos;
    QString color;

    if (region.contains(pos))
      color = selectColor;
    else
      color = backColor;

    mViewDataCache[pos.row][pos.col].mFrame->setStyleSheet(QString("QFrame { background-color: %1 }").arg(color));
  }
}

LayoutViewData LayoutEditorWidget::getViewData(QPoint pt)
{
  for (LayoutData::iterator iter=mViewData.begin(); iter!=mViewData.end(); ++iter)
  {
    LayoutPosition pos = iter->mRegion.pos;
    if (!mViewDataCache[pos.row][pos.col].mFrame->geometry().contains(pt))
      continue;

    return *iter;
  }

  return LayoutViewData();
}

void LayoutEditorWidget::rowsColumnsChangedSlot()
{
  mViewData.resize(mRowsEdit->value(), mColsEdit->value());
  this->setSaneGroupIDs();
  this->updateGrid();
}

QString LayoutEditorWidget::getViewName(LayoutViewData data) const
{
  for (unsigned i=0; i<mViewNames.size(); ++i)
  {
    if (mViewNames[i].mPlane==data.mPlane && mViewNames[i].mView==data.mType)
      return mViewNames[i].mName;
  }
  return "NA";
}

void LayoutEditorWidget::setSaneGroupIDs()
{
          for (LayoutData::iterator iter=mViewData.begin(); iter!=mViewData.end(); ++iter)
          {
                  if (iter->mGroup<0)
                          iter->mGroup = 0;
          }
}

void LayoutEditorWidget::updateGrid()
{
  //std::cout << "pre update:" << streamXml2String(mViewData) << std::endl;

  this->clearDisplay();

  //std::cout << "update start" << std::endl;
  for (LayoutData::iterator iter=mViewData.begin(); iter!=mViewData.end(); ++iter)
  {
    LayoutRegion region = iter->mRegion;
    GridElement gridData = mViewDataCache[region.pos.row][region.pos.col];

    // add and show frame in correct position
    mLayout->addWidget(gridData.mFrame, region.pos.row, region.pos.col, region.span.row, region.span.col);
    gridData.mFrame->show();

    // set view text
    QString name = this->getViewName(*iter);
    if (iter->mGroup<0 && name.isEmpty())
      gridData.mLabel->setText("NA");
    else
      gridData.mLabel->setText(QString("%1/%2").arg(iter->mGroup).arg(name));
  }

  mNameEdit->setText(mViewData.getName());
  mOffScreenRendering->setValue(mViewData.getOffScreenRendering());
//  mRowsEdit->setText(qstring_cast(mViewData.size().row));
//  mColsEdit->setText(qstring_cast(mViewData.size().col));

  mRowsEdit->blockSignals(true);
  mRowsEdit->setValue(mViewData.size().row);
  mRowsEdit->blockSignals(false);

  mColsEdit->blockSignals(true);
  mColsEdit->setValue(mViewData.size().col);
  mColsEdit->blockSignals(false);

//  this->colorRegion(LayoutRegion(-1,-1,1,1), "lightgrey", "lightgrey");
  this->colorRegion(mSelection, "dimgrey", "lightgrey");

  //this->updateGeometry();
  //QSize msize = mLayout->minimumSize();
//  QSize rsize = mGridWidget->size();
  //std::cout << "minsize: " << msize.width() << "," << msize.height() << std::endl;
//  std::cout << "real size: " << rsize.width() << "," << rsize.height() << std::endl;

//  QString color("QFrame { background-color: red }");
//  mViewData[0][0].mFrame->setStyleSheet(color);

//  mGridWidget->resize(msize);
//  this->resize(400,700);
//  QTimer::singleShot(0, this, SLOT(setNiceSize()));

 // std::cout << "post update:" << streamXml2String(mViewData) << std::endl;

}

//void LayoutEditorWidget::setNiceSize()
//{
//  //this->resize(400,700);
//}

void LayoutEditorWidget::clearDisplay()
{
  for (unsigned r = 0; r < mViewDataCache.size(); ++r)
  {
    for (unsigned c = 0; c < mViewDataCache[r].size(); ++c)
    {
      mViewDataCache[r][c].mFrame->hide();
    }
  }
}

void LayoutEditorWidget::initCache()
{
  int maxRows = LayoutData::MaxGridSize;
  int maxCols = LayoutData::MaxGridSize;
  mViewDataCache.resize(maxRows);

  for (int r = 0; r < maxRows; ++r)
  {
    mViewDataCache[r].resize(maxCols);

    for (int c = 0; c < maxCols; ++c)
    {
      QFrame* frame = new QFrame(this);
      //frame->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
      frame->setFrameStyle(QFrame::Panel | QFrame::Sunken);
      frame->setLineWidth(3);
      frame->setLayout(new QVBoxLayout);
      QLabel* label = new QLabel("NA", frame);
      frame->layout()->addWidget(label);

      mViewDataCache[r][c].mFrame = frame;
      mViewDataCache[r][c].mLabel = label;
    }
  }
}


} // namespace cx