LatLonGridTool.cpp

 
/* SPDX-License-Identifier: CC0-1.0 */
 
#include "LatLonGridTool.h"
 
#include <QAction>
#include <QPixmap>
#include <QStackedWidget>
#include <QHBoxLayout>
#include <QCheckBox>
#include <QPainter>
 
#include "MdiCubeViewport.h"
#include "ToolPad.h"
#include "Camera.h"
 
 
namespace Isis {
  LatLonGridTool::LatLonGridTool(QWidget *parent) : Tool(parent) {
  }
 
  QAction *LatLonGridTool::toolPadAction(ToolPad *pad) {
    QAction *action = new QAction(pad);
    action->setIcon(QPixmap(toolIconDir() + "/grid.png"));
    action->setToolTip("Lat Lon Grid Tool (G)");
    action->setShortcut(Qt::Key_G);
 
    QString text  =
      "<b>Function:</b>  View lat lon grid \
      <p><b>Shortcut:</b> G</p> ";
    action->setWhatsThis(text);
 
    return action;
  }
 
  QWidget *LatLonGridTool::createToolBarWidget(QStackedWidget *active) {
    QWidget *container = new QWidget(active);
    container->setObjectName("LatLonGridToolActiveToolBarWidget");
 
    m_gridCheckBox = new QCheckBox;
    m_gridCheckBox->setText("Show Grid");
 
    QHBoxLayout *layout = new QHBoxLayout;
    layout->setMargin(0);
    layout->addWidget(m_gridCheckBox);
    layout->addStretch(1);
    container->setLayout(layout);
 
    m_container = container;
    return container;
  }
 
  void LatLonGridTool::paintViewport(MdiCubeViewport *mvp, QPainter *painter) {
    int x1, x2, y1, y2;
    double lat, lon;
 
    QFont font;
    QBrush brush(Qt::gray);
    QPen pen(brush, 1);
 
    // Only draws if "Show Grid" checkbox is checked
    if (m_gridCheckBox->isChecked()) {
      painter->setPen(pen);
      font.setPixelSize(8);
      painter->setFont(font);
 
      // Draws Longitude Lines
      for (int i = mvp->cubeSamples(); i > 0; i -= mvp->cubeSamples() / 12) {
        if (mvp->camera() != NULL) {
            mvp->camera()->SetImage(i, 0);
            lon = mvp->camera()->UniversalLongitude();
 
            lon = ceil(lon * 100.0) / 100.0;
 
            mvp->cubeToViewport(i, 0, x1, y1);
            mvp->cubeToViewport(0, mvp->cubeLines(), x2, y2);
            painter->drawLine(x1, y1, x1, y2);
 
            painter->drawText(x1, y2 + 10, toString(lon));
        }
      }
 
      // Draws Latitude Lines
      for (int i = mvp->cubeLines(); i > 0; i -= mvp->cubeLines() / 12) {
        if (mvp->camera() != NULL) {
            mvp->camera()->SetImage(0, i);
            lat = mvp->camera()->UniversalLatitude();
 
            lat = ceil(lat * 100.0) / 100.0;
 
            mvp->cubeToViewport(0, i, x1, y1);
            mvp->cubeToViewport(mvp->cubeSamples(), 0, x2, y2);
            painter->drawLine(x1, y1, x2, y1);
 
            painter->drawText(x2 + 5, y1, toString(lat));
        }
      }
    }
    // remove grid by updating viewport to original cubeViewport
    else {
      mvp = cubeViewport();
    }
  }
 
  void LatLonGridTool::updateTool() {
    MdiCubeViewport *vp = cubeViewport();
 
    if (vp != NULL) {
      if (vp->camera() == NULL) {
        m_gridCheckBox->setEnabled(false);
      }
      else {
          m_gridCheckBox->setEnabled(true);
      }
    }
  }
}