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/*****************************************************************************
* $CAMITK_LICENCE_BEGIN$
*
* CamiTK - Computer Assisted Medical Intervention ToolKit
* (c) 2001-2024 Univ. Grenoble Alpes, CNRS, Grenoble INP - UGA, TIMC, 38000 Grenoble, France
*
* Visit http://camitk.imag.fr for more information
*
* This file is part of CamiTK.
*
* CamiTK is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* CamiTK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with CamiTK. If not, see <http://www.gnu.org/licenses/>.
*
* $CAMITK_LICENCE_END$
****************************************************************************/
#include "ImagePicking.h"
#include <ImageComponent.h>
#include <Application.h>
#include <InteractiveSliceViewer.h>
#include <Log.h>
using namespace camitk;
// Qt
#include <QPushButton>
#include <QVBoxLayout>
// -------------------- ImagePicking --------------------
ImagePicking::ImagePicking(ActionExtension* extension) : Action(extension) {
setName("Basic Image Picking");
// NOTE try to call setEmbedded(false) to see the difference
setDescription("Tutorial action that retrieve pixel information from the image");
setComponentClassName("ImageComponent");
setFamily("Tutorial");
addTag("Picking");
addTag("Image Processing");
//-- widget lazy instantiation
informationFrame = nullptr;
isConnected = false;
}
// --------------- getWidget -------------------
QWidget* ImagePicking::getWidget() {
if (!informationFrame) {
//-- the frame
informationFrame = new QFrame();
informationFrame->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
informationFrame->setLineWidth(3);
//-- the information label
informationLabel = new QLabel();
//-- the vertical layout, put every GUI elements in it
auto* informationFrameLayout = new QVBoxLayout();
informationFrameLayout->addWidget(informationLabel);
//-- set the layout for the action widget
informationFrame->setLayout(informationFrameLayout);
}
CAMITK_TRACE("Connecting viewers signals to automatically apply this action at each user picking")
if (!isConnected && Application::getViewer("Axial Viewer") != nullptr) {
//-- run the action every time a picking is done in the axial/sagittal or coronal planes
QObject::connect(Application::getViewer("Axial Viewer"), SIGNAL(selectionChanged()), this, SLOT(apply()));
QObject::connect(Application::getViewer("Coronal Viewer"), SIGNAL(selectionChanged()), this, SLOT(apply()));
QObject::connect(Application::getViewer("Sagittal Viewer"), SIGNAL(selectionChanged()), this, SLOT(apply()));
isConnected = true;
}
return informationFrame;
}
// --------------- apply -------------------
Action::ApplyStatus ImagePicking::apply() {
if (informationFrame != nullptr) {
// set waiting cursor (not really needed here as the action is very fast, but after all this is a demo)
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
}
// get the last selected image component
ImageComponent* imageComponent = dynamic_cast<ImageComponent*>(getTargets().last());
// NOTE it is not needed to check for NULL pointer after this dynamic_cast: this action
// has declared to be able to process ImageComponent (see the setComponent(..) in the constructor),
// therefore it is only called using getTargets() that are compatible with ImageComponent
// get the last picked pixel index
int i, j, k;
imageComponent->getLastPixelPicked(&i, &j, &k);
// check validity
if (i != -1 && j != -1 && k != -1) {
// retrieve information
double pixelValue;
pixelValue = imageComponent->getImageData()->GetScalarComponentAsDouble(i, j, k, 0);
// NOTE if this was a colored image, this would be the red value (the last parameter
// of GetScalarComponentAsDouble is the index of the color component)
// update the information label
if (informationFrame != nullptr) {
informationLabel->setText("<b>Selected Component:</b> " + imageComponent->getName() + "<br/>"
+ "<b>Pixel coordinates:</b> (" + QString("%1").arg(i, 3) + ","
+ QString("%1").arg(j, 3) + "," + QString("%1").arg(k, 3) + ")<br/>"
+ "<b>Pixel value:</b> " + QString("%1").arg(pixelValue, 5)
);
}
else {
// or just print it out if there is no widget
CAMITK_INFO(tr("Selected Component: \"%1\"\n"
"- Pixel coordinates: (%2,%3,%4)\n"
"- Pixel value: %5").arg(imageComponent->getName(), QString::number(i), QString::number(j), QString::number(k), QString::number(pixelValue)))
}
}
if (informationFrame != nullptr) {
if (informationFrame->isVisible()) {
// restore the normal cursor
QApplication::restoreOverrideCursor();
}
else {
// disconnect
CAMITK_TRACE("Disconnecting viewers signals.")
if (Application::getViewer("Axial Viewer") != nullptr) {
//-- disconnect the automatic run of the action every time a picking is done in the axial/sagittal or coronal planes
QObject::disconnect(Application::getViewer("Axial Viewer"), SIGNAL(selectionChanged()), this, SLOT(apply()));
QObject::disconnect(Application::getViewer("Coronal Viewer"), SIGNAL(selectionChanged()), this, SLOT(apply()));
QObject::disconnect(Application::getViewer("Sagittal Viewer"), SIGNAL(selectionChanged()), this, SLOT(apply()));
isConnected = false;
}
}
}
return SUCCESS;
}
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