templateviewer.cpp
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#include <QColor>
#include <QMimeData>
#include <QPainter>
#include <QPen>
#include <QUrl>
#include <QtConcurrentRun>
#include <openbr.h>
#include "templateviewer.h"
using namespace br;
/*** STATIC ***/
const int NumLandmarks = 2;
static bool lessThan(const QPointF &a, const QPointF &b)
{
return ((a.x() < b.x()) ||
((a.x() == b.x()) && (a.y() < b.y())));
}
/*** PUBLIC ***/
TemplateViewer::TemplateViewer(QWidget *parent)
: ImageViewer(parent)
{
setAcceptDrops(true);
setMouseTracking(true);
setText("<b>Drag Photo or Folder Here</b>\n");
format = "Registered";
editable = true;
setFile(File());
update();
}
/*** PUBLIC SLOTS ***/
void TemplateViewer::setFile(const File &file_)
{
this->file = file_;
// Update landmarks
landmarks.clear();
if (file.contains("Affine_0_X") && file.contains("Affine_0_Y"))
landmarks.append(QPointF(file.get<float>("Affine_0_X"), file.get<float>("Affine_0_Y")));
if (file.contains("Affine_1_X") && file.contains("Affine_1_Y"))
landmarks.append(QPointF(file.get<float>("Affine_1_X"), file.get<float>("Affine_1_Y")));
while (landmarks.size() < NumLandmarks)
landmarks.append(QPointF());
nearestLandmark = -1;
QtConcurrent::run(this, &TemplateViewer::refreshImage);
}
void TemplateViewer::setEditable(bool enabled)
{
editable = enabled;
update();
}
void TemplateViewer::setMousePoint(const QPointF &mousePoint)
{
this->mousePoint = mousePoint;
update();
}
void TemplateViewer::setFormat(const QString &format)
{
this->format = format;
QtConcurrent::run(this, &TemplateViewer::refreshImage);
}
/*** PRIVATE ***/
void TemplateViewer::refreshImage()
{
if (file.isNull() || (format == "Photo")) {
setImage(file, true);
} else {
const QString path = QString(br_scratch_path()) + "/thumbnails";
const QString hash = file.hash()+format;
const QString processedFile = path+"/"+file.baseName()+hash+".png";
if (!QFileInfo(processedFile).exists()) {
if (format == "Registered")
Enroll(file.flat(), path+"[postfix="+hash+",cache,algorithm=RegisterAffine]");
else if (format == "Enhanced")
Enroll(file.flat(), path+"[postfix="+hash+",cache,algorithm=ContrastEnhanced]");
else if (format == "Features")
Enroll(file.flat(), path+"[postfix="+hash+",cache,algorithm=ColoredLBP]");
}
setImage(processedFile, true);
}
}
QPointF TemplateViewer::getImagePoint(const QPointF &sp) const
{
if (!pixmap() || isNull()) return QPointF();
QPointF ip = QPointF(imageWidth()*(sp.x() - (width() - pixmap()->width())/2)/pixmap()->width(),
imageHeight()*(sp.y() - (height() - pixmap()->height())/2)/pixmap()->height());
if ((ip.x() < 0) || (ip.x() > imageWidth()) || (ip.y() < 0) || (ip.y() > imageHeight())) return QPointF();
return ip;
}
QPointF TemplateViewer::getScreenPoint(const QPointF &ip) const
{
if (!pixmap() || isNull()) return QPointF();
return QPointF(ip.x()*pixmap()->width()/imageWidth() + (width()-pixmap()->width())/2,
ip.y()*pixmap()->height()/imageHeight() + (height()-pixmap()->height())/2);
}
/*** PROTECTED SLOTS ***/
void TemplateViewer::dragEnterEvent(QDragEnterEvent *event)
{
ImageViewer::dragEnterEvent(event);
event->accept();
if (event->mimeData()->hasUrls() || event->mimeData()->hasImage())
event->acceptProposedAction();
}
void TemplateViewer::dropEvent(QDropEvent *event)
{
ImageViewer::dropEvent(event);
event->accept();
event->acceptProposedAction();
const QMimeData *mimeData = event->mimeData();
if (mimeData->hasImage()) {
QImage input = qvariant_cast<QImage>(mimeData->imageData());
emit newInput(input);
} else if (event->mimeData()->hasUrls()) {
File input;
foreach (const QUrl &url, mimeData->urls()) {
if (!url.isValid()) continue;
if (url.toString().startsWith("http://images.google.com/search")) continue; // Not a true image URL
const QString localFile = url.toLocalFile();
if (localFile.isNull()) input.append(url.toString());
else input.append(localFile);
}
if (input.isNull()) return;
emit newInput(input);
}
}
void TemplateViewer::leaveEvent(QEvent *event)
{
ImageViewer::leaveEvent(event);
event->accept();
clearFocus();
nearestLandmark = -1;
mousePoint = QPointF();
emit newMousePoint(mousePoint);
unsetCursor();
update();
}
void TemplateViewer::mouseMoveEvent(QMouseEvent *event)
{
ImageViewer::mouseMoveEvent(event);
event->accept();
mousePoint = getImagePoint(event->pos());
nearestLandmark = -1;
if (!mousePoint.isNull()) {
double nearestDistance = std::numeric_limits<double>::max();
for (int i=0; i<NumLandmarks; i++) {
if (landmarks[i].isNull()) {
nearestLandmark = -1;
break;
}
double dist = sqrt(pow(mousePoint.x() - landmarks[i].x(), 2.0) + pow(mousePoint.y() - landmarks[i].y(), 2.0));
if (dist < nearestDistance) {
nearestDistance = dist;
nearestLandmark = i;
}
}
if (format == "Photo") unsetCursor();
else setCursor(Qt::BlankCursor);
} else {
unsetCursor();
}
emit newMousePoint(mousePoint);
update();
}
void TemplateViewer::mousePressEvent(QMouseEvent *event)
{
ImageViewer::mousePressEvent(event);
event->accept();
if (isNull() || getImagePoint(event->pos()).isNull()) return;
if (!editable || (format != "Photo")) {
emit selectedInput(file);
return;
}
int index;
for (index=0; index<NumLandmarks; index++)
if (landmarks[index].isNull()) break;
if ((event->button() == Qt::RightButton) || (index == NumLandmarks)) {
// Remove nearest point
if (nearestLandmark == -1) return;
index = nearestLandmark;
landmarks[nearestLandmark] = QPointF();
nearestLandmark = -1;
}
if (event->button() == Qt::LeftButton) {
// Add a point
landmarks[index] = getImagePoint(event->pos());
qSort(landmarks.begin(), landmarks.end(), lessThan);
if (!landmarks.contains(QPointF()))
emit selectedInput(file.name+QString("[Affine_0_X=%1, Affine_0_Y=%2, Affine_1_X=%3, Affine_1_Y=%4]").arg(QString::number(landmarks[0].x()),
QString::number(landmarks[0].y()),
QString::number(landmarks[1].x()),
QString::number(landmarks[1].y())));
}
update();
}
void TemplateViewer::paintEvent(QPaintEvent *event)
{
static const QColor nearest(0, 0, 255, 192);
static const QColor normal(0, 255, 0, 192);
ImageViewer::paintEvent(event);
event->accept();
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, true);
if (format == "Photo") {
for (int i=0; i<NumLandmarks; i++) {
if (!landmarks[i].isNull()) {
if ((i == nearestLandmark) &&
editable) painter.setBrush(QBrush(nearest));
else painter.setBrush(QBrush(normal));
painter.drawEllipse(getScreenPoint(landmarks[i]), 4, 4);
}
}
} else {
if (!mousePoint.isNull() && !isNull()) {
painter.setPen(QPen(normal));
painter.drawLine(getScreenPoint(QPointF(mousePoint.x(), 0)), getScreenPoint(QPointF(mousePoint.x(), imageHeight())));
painter.drawLine(getScreenPoint(QPointF(0, mousePoint.y())), getScreenPoint(QPointF(imageWidth(), mousePoint.y())));
}
}
}
#include "moc_templateviewer.cpp"