Widget to display the maps of various spacial aspects of the model. More...

#include <MapBox.h>

Inheritance diagram for MapBox:

Collaboration diagram for MapBox:

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Public Slots
void	updatePixel (QString layerName_h, int x_h, int y_h, QColor color_h)

void	updateImage (QString layerName_h, const QImage &image_h)

void	switchToLayer (QString layerName_h)
	Change the layer that currentLayer and currentLayerName points.

void	addLayer (QString layerName_h)

void	fitInWindow ()

void	zoom (double zoomFactor)

void	scroll (int deltaX, int deltaY)

Signals
void	queryRequestOnPx (int px_ID, int currentLayerIndex, bool newRequest)

Public Member Functions
	MapBox (QWidget *parent=0)

int	getLayerIndex (QString layerName_h="")
	Return the index of the specified layer (null to ask for the current one)

Private Member Functions
void	updatePixmap (const QImage &image, bool reFit=false)

void	paintEvent (QPaintEvent *event)
	Reimplementation of the standard paintEvent method.

void	prepareQueryEvent (QPoint click)

void	keyPressEvent (QKeyEvent *event)

void	wheelEvent (QWheelEvent *event)

void	mousePressEvent (QMouseEvent *event)

void	mouseMoveEvent (QMouseEvent *event)

Private Attributes
vector< QImage >	layersVector
	Vector of QImages.

vector< QString >	layersNameVector
	Vector of layer names.

QImage	currentLayer

QString	currentLayerName

QPoint	lastDragPos

double	sx1

double	sy1

double	sx2

double	sy2
	coordinates of corner pixels of source - pixmap - rectangle

double	dx1

double	dy1

double	dx2

double	dy2
	coordinates of corner pixels of destination - widget - rectangle

Detailed Description

Widget to display the maps of various spacial aspects of the model.

This class is based on QImage. It pick-ups from layersVector the choosed layer and display it.
It has methods to change the individual pixels or the whole image of a layer.

Definition at line 41 of file MapBox.h.

Constructor & Destructor Documentation

◆ MapBox()

MapBox ( QWidget * parent = 0 )

Definition at line 35 of file MapBox.cpp.

                             :QWidget(parent) {
 
  currentLayerName = "";
  setCursor(Qt::CrossCursor);
 
  // setting source and destination init corners..
  sx1 = 0;
  sy1 = 0;
  sx2 = this->width();
  sy2 = this->height();
  dx1 = 0;
  dy1 = 0;
  dx2 = this->width();
  dy2 = this->height();
}

Member Function Documentation

◆ addLayer

void addLayer ( QString layerName_h )

slot

Definition at line 135 of file MapBox.cpp.

                                   {
  static int counter = 0;
  QImage newlayer = QImage(this->width(), this->height(), QImage::Format_RGB32);
  newlayer.fill(qRgb(255, 255, 255));
  layersVector.push_back(newlayer);
  layersNameVector.push_back(layerName_h);
  if (counter == 0) {
    currentLayerName = layerName_h;
    currentLayer = layersVector.at(0);
  }
  counter ++;
}

◆ fitInWindow

void fitInWindow ( )

slot

Definition at line 217 of file MapBox.cpp.

                        {
 
  QPixmap pixmap = QPixmap::fromImage(currentLayer);
  double tempXScale = ( (double) this->width()) / ((double)pixmap.width());
  double tempYScale = ( (double) this->height())/ ((double)pixmap.height());
 
  sx1 = 0;
  sy1 = 0;
  sx2 = pixmap.width();
  sy2 = pixmap.height();
  dx1 = 0;
  dy1 = 0;
 
  if ( tempXScale >= tempYScale){
    dx2 = ((double)pixmap.width())*tempYScale;
    dy2 = this->height();
  } else {
    dx2 = this->width();
    dy2 = ((double)pixmap.height())*tempXScale;
  }
  update();
}

Referenced by updateImage().

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◆ getLayerIndex()

int getLayerIndex ( QString layerName_h = "" )

Return the index of the specified layer (null to ask for the current one)

Definition at line 123 of file MapBox.cpp.

                                        {
  if( layerName_h == "") layerName_h = currentLayerName;
  for (uint i=0;i<layersVector.size();i++){
    if (layersNameVector.at(i) == layerName_h){
      return i;
    }
  }
  cout << "*** ERROR in MapBox:getLayerIndex(): layerName_h "<< qPrintable(layerName_h) << " not found "<< endl;
  return -1;
}

Referenced by prepareQueryEvent().

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◆ keyPressEvent()

void keyPressEvent ( QKeyEvent * event )

private

Definition at line 149 of file MapBox.cpp.

                                      {
  switch (event->key()) {
    case Qt::Key_Plus:
    zoom(ZoomInFactor);
    break;
  case Qt::Key_Minus:
    zoom(ZoomOutFactor);
    break;
  case Qt::Key_Left:
    scroll(+ScrollStep, 0);
    break;
  case Qt::Key_Right:
    scroll(-ScrollStep, 0);
    break;
  case Qt::Key_Down:
    scroll(0, -ScrollStep);
    break;
  case Qt::Key_Up:
    scroll(0, +ScrollStep);
    break;
  default:
    QWidget::keyPressEvent(event);
  }
}

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◆ mouseMoveEvent()

void mouseMoveEvent ( QMouseEvent * event )

private

Definition at line 209 of file MapBox.cpp.

                                         {
  if (event->buttons() & Qt::LeftButton) {
    scroll(event->pos().x()-lastDragPos.x(), event->pos().y()-lastDragPos.y());
    lastDragPos = event->pos();
    update();
  }
}

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◆ mousePressEvent()

void mousePressEvent ( QMouseEvent * event )

private

Definition at line 182 of file MapBox.cpp.

                                         {
  if (event->button() == Qt::LeftButton){
    lastDragPos = event->pos();
  }
  else if (event->button() == Qt::RightButton){
    prepareQueryEvent(event->pos());
  }
}

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◆ paintEvent()

void paintEvent ( QPaintEvent * event )

private

Reimplementation of the standard paintEvent method.

We paint the image pixel by pixel picking up the colors from the map pointed by currentLayer.

Definition at line 55 of file MapBox.cpp.

                                     {
 
  if (layersVector.size() < 1) return;
  QPainter painter(this);
  painter.fillRect(rect(), Qt::lightGray  );
  QPixmap pixmap = QPixmap::fromImage(currentLayer); // It doesn't get autmoatically refreshed if I use a separate function to update the pixmap from the image
  QRectF source     (sx1, sy1, sx2-sx1, sy2-sy1); // the second point is in coordinates origin of the firt point !!!!
  QRectF destination(dx1, dy1, dx2-dx1, dy2-dy1); // the second point is in coordinates origin of the firt point !!!!
  /*
  This is the main function of the widget... the good pointa are:
  A) It takes into account the low level details of scaling, such interpolation
  B) If the destination is outside the widgets bounds, it doesn't matter. It make its job on the widget without any error (in this sence it isnot like an array luckily...)
  */
  painter.drawPixmap(destination, pixmap, source);
 
}

◆ prepareQueryEvent()

void prepareQueryEvent ( QPoint click )

private

Definition at line 192 of file MapBox.cpp.

                                     {
  double cx = ((double) click.x()); //clicked x, casted to double
  double cy = ((double) click.y()); //clicked y, casted to double
  int   mx, my = 0; // outputed x and y
  int   px_ID;  // pixel ID
  int   layerIndex = getLayerIndex();
  // checking it is not out of the destination border range..
  if (cx>dx2 || cx<dx1 || cy>dy2 || cy<dy1) return;
  mx = ( (int) (cx-dx1) * (sx2-sx1)/(dx2-dx1) + sx1); // casting to int, not round() !!
  my = ( (int) (cy-dy1) * (sy2-sy1)/(dy2-dy1) + sy1); // casting to int, not round() !!
  px_ID = mx+my*(sx2-sx1);
  emit queryRequestOnPx(px_ID, layerIndex, true);
 
}

Referenced by mousePressEvent().

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◆ queryRequestOnPx

void queryRequestOnPx	(	int	px_ID,
		int	currentLayerIndex,
		bool	newRequest
	)

signal

Referenced by prepareQueryEvent().

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◆ scroll

void scroll	(	int	deltaX,
		int	deltaY
	)

slot

Definition at line 255 of file MapBox.cpp.

                                    {
  dx1 += ((double) deltaX);
  dx2 += ((double) deltaX);
  dy1 += ((double) deltaY);
  dy2 += ((double) deltaY);
  update();
}

Referenced by keyPressEvent(), and mouseMoveEvent().

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◆ switchToLayer

void switchToLayer ( QString layerName_h )

slot

Change the layer that currentLayer and currentLayerName points.

Definition at line 108 of file MapBox.cpp.

                                        {
  if (layerName_h != currentLayerName){
    for (uint i=0;i<layersVector.size();i++){
      if (layersNameVector.at(i) == layerName_h){
        currentLayer = layersVector.at(i);
        currentLayerName = layerName_h;
        update();
        return;
      }
    }
    cout << "*** ERROR in MapBox::switchToLayer(): layerName_h "<< qPrintable(layerName_h) << " not found "<< endl;
  }
}

◆ updateImage

void updateImage	(	QString	layerName_h,
		const QImage &	image_h
	)

slot

Definition at line 87 of file MapBox.cpp.

                                                             {
  static int counter = 0;
  for (uint i=0;i<layersVector.size();i++){
    if (layersNameVector.at(i) == layerName_h){
      layersVector.at(i) = image_h;
      if(layerName_h == currentLayerName){
        currentLayer = layersVector.at(i);
        update();
      }
      if (counter == 0) { // that's the first image we got !!
        fitInWindow();
      }
      counter ++;
      return;
    }
  }
  counter ++;
  cout << "*** ERROR in MapBox::updateImage(): layerName_h "<< qPrintable(layerName_h) << " not found "<< endl;
}

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◆ updatePixel

void updatePixel	(	QString	layerName_h,
		int	x_h,
		int	y_h,
		QColor	color_h
	)

slot

Definition at line 73 of file MapBox.cpp.

                                                                        {
  for (uint i=0;i<layersVector.size();i++){
    if (layersNameVector.at(i) == layerName_h){
      layersVector.at(i).setPixel(x_h, y_h, color_h.rgb());
      if(layerName_h == currentLayerName){
        currentLayer = layersVector.at(i);
        update();
      }
      return;
    }
  }
}

◆ updatePixmap()

void updatePixmap	(	const QImage &	image,
		bool	reFit = `false`
	)

private

◆ wheelEvent()

void wheelEvent ( QWheelEvent * event )

private

Definition at line 175 of file MapBox.cpp.

                                    {
  int numDegrees = event->delta() / 8;
  double numSteps = numDegrees / 15.0f;
  zoom(pow(ZoomInFactor, numSteps));
}

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◆ zoom

void zoom ( double zoomFactor )

slot

Definition at line 241 of file MapBox.cpp.

                             {
  double dx1new, dx2new, dy1new, dy2new;
  dx1new = dx2- (dx2-dx1)* ( 1+ (zoomFactor-1)/2 ); 
  dx2new = dx1+ (dx2-dx1)* ( 1+ (zoomFactor-1)/2 );
  dy1new = dy2- (dy2-dy1)* ( 1+ (zoomFactor-1)/2 ); 
  dy2new = dy1+ (dy2-dy1)* ( 1+ (zoomFactor-1)/2 );
  dx1 = dx1new;
  dy1 = dy1new;
  dx2 = dx2new;
  dy2 = dy2new;
  update();
}

Referenced by keyPressEvent(), and wheelEvent().

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Member Data Documentation

◆ currentLayer

QImage currentLayer

private

Definition at line 70 of file MapBox.h.

Referenced by addLayer(), fitInWindow(), paintEvent(), switchToLayer(), updateImage(), and updatePixel().

◆ currentLayerName

QString currentLayerName

private

Definition at line 71 of file MapBox.h.

Referenced by addLayer(), getLayerIndex(), MapBox(), switchToLayer(), updateImage(), and updatePixel().

◆ dx1

double dx1

private

Definition at line 74 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), prepareQueryEvent(), scroll(), and zoom().

◆ dx2

double dx2

private

Definition at line 74 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), prepareQueryEvent(), scroll(), and zoom().

◆ dy1

double dy1

private

Definition at line 74 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), prepareQueryEvent(), scroll(), and zoom().

◆ dy2

double dy2

private

coordinates of corner pixels of destination - widget - rectangle

Definition at line 74 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), prepareQueryEvent(), scroll(), and zoom().

◆ lastDragPos

QPoint lastDragPos

private

Definition at line 72 of file MapBox.h.

Referenced by mouseMoveEvent(), and mousePressEvent().

◆ layersNameVector

vector<QString> layersNameVector

private

Vector of layer names.

Definition at line 69 of file MapBox.h.

Referenced by addLayer(), getLayerIndex(), switchToLayer(), updateImage(), and updatePixel().

◆ layersVector

vector<QImage> layersVector

private

Vector of QImages.

Definition at line 68 of file MapBox.h.

Referenced by addLayer(), getLayerIndex(), paintEvent(), switchToLayer(), updateImage(), and updatePixel().

◆ sx1

double sx1

private

Definition at line 73 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), and prepareQueryEvent().

◆ sx2

double sx2

private

Definition at line 73 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), and prepareQueryEvent().

◆ sy1

double sy1

private

Definition at line 73 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), and prepareQueryEvent().

◆ sy2

double sy2

private

coordinates of corner pixels of source - pixmap - rectangle

Definition at line 73 of file MapBox.h.

Referenced by fitInWindow(), MapBox(), paintEvent(), and prepareQueryEvent().

The documentation for this class was generated from the following files:

/exports/ffsm/src_latest/src/MapBox.h
/exports/ffsm/src_latest/src/MapBox.cpp

Public Slots

Signals

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ MapBox()

Member Function Documentation

◆ addLayer

◆ fitInWindow

◆ getLayerIndex()

◆ keyPressEvent()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ paintEvent()

◆ prepareQueryEvent()

◆ queryRequestOnPx

◆ scroll

◆ switchToLayer

◆ updateImage

◆ updatePixel

◆ updatePixmap()

◆ wheelEvent()

◆ zoom

Member Data Documentation

◆ currentLayer

◆ currentLayerName

◆ dx1

◆ dx2

◆ dy1

◆ dy2

◆ lastDragPos

◆ layersNameVector

◆ layersVector

◆ sx1

◆ sx2

◆ sy1

◆ sy2