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Add text overlays

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This commit is contained in:
Manuel Dewald
2021-03-04 14:40:11 +01:00
parent c84f01434e
commit d4beb46f28
7 changed files with 262 additions and 4 deletions
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28
src/mainwindow.cpp
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@@ -1,4 +1,5 @@
#include "mainwindow.h"
#include "overlay.h"
#include "ui_mainwindow.h"
#include <QLabel>
#include <QPixmap>
@@ -9,6 +10,7 @@
#include <iostream>
#include <QPainter>
#include <QTimer>
#include <QRect>
#include <QGraphicsScene>
#include <QGraphicsPixmapItem>
#include <sstream>
@@ -99,6 +101,14 @@ void MainWindow::updateImage()
QPixmap p( currentImage.c_str() );
QPixmap rotated = getRotatedPixmap(p);
QPixmap scaled = getScaledPixmap(rotated);
if (overlay != NULL)
{
drawText(scaled, overlay->getMarginTopLeft(), overlay->getFontsizeTopLeft(), overlay->getRenderedTopLeft(currentImage).c_str(), Qt::AlignTop|Qt::AlignLeft);
drawText(scaled, overlay->getMarginTopRight(), overlay->getFontsizeTopRight(), overlay->getRenderedTopRight(currentImage).c_str(), Qt::AlignTop|Qt::AlignRight);
drawText(scaled, overlay->getMarginBottomLeft(), overlay->getFontsizeBottomLeft(), overlay->getRenderedBottomLeft(currentImage).c_str(), Qt::AlignBottom|Qt::AlignLeft);
drawText(scaled, overlay->getMarginBottomRight(), overlay->getFontsizeBottomRight(), overlay->getRenderedBottomRight(currentImage).c_str(), Qt::AlignBottom|Qt::AlignRight);
}
QLabel *label = this->findChild<QLabel*>("image");
label->setPixmap(scaled);
@@ -112,6 +122,24 @@ void MainWindow::updateImage()
update();
}
void MainWindow::drawText(QPixmap& image, int margin, int fontsize, QString text, int alignment) {
//std::cout << "text: " << text.toStdString() << " margin: " << margin << " fontsize: " << fontsize<< std::endl;
QPainter pt(&image);
pt.setPen(QPen(Qt::white));
pt.setFont(QFont("Sans", fontsize, QFont::Bold));
QRect marginRect = image.rect().adjusted(
margin,
margin,
margin*-1,
margin*-1);
pt.drawText(marginRect, alignment, text);
}
void MainWindow::setOverlay(Overlay* o)
{
overlay = o;
}
QPixmap MainWindow::getRotatedPixmap(const QPixmap& p)
{
QMatrix matrix;