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mainwindow.cpp
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mainwindow.cpp
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#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QWidget(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
haveNewImageData = true;
haveNewImage = &haveNewImageData;
isMouseGrabbed = false;
shortcut = new QShortcut(this);
shortcut->setKey(QKeySequence(Qt::Key_F7));
connect(shortcut, SIGNAL(activated()), this, SLOT(shortcutPressed()));
connect(shortcut, SIGNAL(activatedAmbiguously()), this, SLOT(shortcutPressed()));
connect(ui->graphicsView, SIGNAL(mousePressed(QMouseEvent*)), this, SLOT(mousePressSlot(QMouseEvent*)));
connect(ui->graphicsView, SIGNAL(mouseReleased(QMouseEvent*)), this, SLOT(mouseReleaseSlot(QMouseEvent*)));
selectionRegion.setStyleSheet("background-color: blue");
selectionRegion.setWindowOpacity(0.3);
selectionRegion.setWindowFlags(Qt::WindowStaysOnTopHint | Qt::Tool | Qt::CustomizeWindowHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint);
this->pressPoint.setX(0);
this->pressPoint.setY(0);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::shortcutPressed()
{
qDebug() << "shortcut pressed";
if (isMouseGrabbed)
{
isMouseGrabbed = false;
this->releaseMouse();
}
else
{
isMouseGrabbed = true;
this->grabMouse();
}
}
QGraphicsView* MainWindow::getView()
{
return ui->graphicsView;
}
void MainWindow::saveScreenshot(QString outputPath)
{
QWidget *view = getView();
//QPixmap screenshot = QPixmap::grabWidget(view, 0, 0, view->width(), view->height());
QPoint start = view->mapToGlobal(QPoint(0, 0));
QPixmap screenshot = QPixmap::grabWindow(QApplication::desktop()->winId(), start.x(), start.y(), view->width(), view->height());
QImage curImg = screenshot.toImage();
if (curImg == prevImg)
{
*haveNewImage = false;
return;
}
*haveNewImage = true;
prevImg = curImg;
screenshot.save(outputPath, "png", 100);
}
void MainWindow::setOCRText(QString ocrText)
{
ui->lineEdit->setText(ocrText);
}
void MainWindow::mousePressEvent(QMouseEvent * event)
{
qDebug() << "mouse pressed";
pressPoint.setX(event->globalX());
pressPoint.setY(event->globalY());
if (isMouseGrabbed)
{
selectionRegion.resize(0, 0);
selectionRegion.move(pressPoint);
selectionRegion.show();
}
}
void MainWindow::mouseReleaseEvent(QMouseEvent * event)
{
selectionRegion.hide();
qDebug() << "mouse released";
if (isMouseGrabbed)
{
isMouseGrabbed = false;
this->releaseMouse();
int newWidth = event->globalX() - pressPoint.x();
int newHeight = event->globalY() - pressPoint.y();
if (newWidth <= 5 || newHeight <= 5)
{
return;
}
QPoint windowZeroCoord = this->mapToGlobal(QPoint(0,0));
QPoint frameZeroCoord = ui->graphicsView->mapToGlobal(QPoint(0,0));
QPoint offsetPoint = frameZeroCoord - windowZeroCoord;
int widthDifference = this->width() - ui->graphicsView->width();
int heightDifferece = this->height() - ui->graphicsView->height();
this->move(pressPoint - offsetPoint);
this->resize(newWidth + widthDifference, newHeight + heightDifferece);
}
else
{
if (event->button() == Qt::RightButton)
{
isMouseGrabbed = true;
this->grabMouse();
return;
}
}
}
void MainWindow::mousePressSlot(QMouseEvent * event)
{
mousePressEvent(event);
}
void MainWindow::mouseReleaseSlot(QMouseEvent * event)
{
mouseReleaseEvent(event);
}
void MainWindow::mouseMoveEvent(QMouseEvent* event)
{
if (!selectionRegion.isVisible())
return;
int newWidth = event->globalX() - pressPoint.x();
int newHeight = event->globalY() - pressPoint.y();
selectionRegion.resize(newWidth, newHeight);
}