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Editing images

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Jakub Melka
2024-04-07 18:10:53 +02:00
parent 83adf1e49d
commit b481b3afcc
6 changed files with 183 additions and 12 deletions
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105
Pdf4QtLibWidgets/sources/pdfpagecontenteditorediteditemsettings.cpp
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@ -22,6 +22,11 @@
#include "pdfpagecontenteditorprocessor.h"
#include "pdfwidgetutils.h"
#include <QDir>
#include <QFileDialog>
#include <QImageReader>
#include <QStandardPaths>
namespace pdf
{
@ -30,6 +35,7 @@ PDFPageContentEditorEditedItemSettings::PDFPageContentEditorEditedItemSettings(Q
ui(new Ui::PDFPageContentEditorEditedItemSettings)
{
ui->setupUi(this);
connect(ui->loadImageButton, &QPushButton::clicked, this, &PDFPageContentEditorEditedItemSettings::selectImage);
}
PDFPageContentEditorEditedItemSettings::~PDFPageContentEditorEditedItemSettings()
@ -48,15 +54,98 @@ void PDFPageContentEditorEditedItemSettings::loadFromElement(PDFPageContentEleme
if (const PDFEditedPageContentElementImage* imageElement = contentElement->asImage())
{
QSize imageSize = QSize(200, 200);
QImage image = imageElement->getImage();
image.setDevicePixelRatio(this->devicePixelRatioF());
image = image.scaled(imageSize * this->devicePixelRatioF(), Qt::KeepAspectRatio);
ui->tabWidget->addTab(ui->imageTab, tr("Image"));
ui->imageLabel->setPixmap(QPixmap::fromImage(image));
ui->imageLabel->setFixedSize(PDFWidgetUtils::scaleDPI(this, imageSize));
m_image = imageElement->getImage();
setImage(imageElement->getImage());
}
}
void PDFPageContentEditorEditedItemSettings::saveToElement(PDFPageContentElementEdited* editedElement)
{
if (PDFEditedPageContentElementImage* imageElement = editedElement->getElement()->asImage())
{
imageElement->setImage(m_image);
imageElement->setImageObject(PDFObject());
}
}
static int PDF_gcd(int a, int b)
{
if (b == 0)
{
return a;
}
return PDF_gcd(b, a % b);
}
void PDFPageContentEditorEditedItemSettings::setImage(QImage image)
{
QSize imageSize = QSize(200, 200);
int width = image.width();
int height = image.height();
int n = width;
int d = height;
int divisor = PDF_gcd(n, d);
if (divisor > 1)
{
n /= divisor;
d /= divisor;
}
ui->imageWidthEdit->setText(QString("%1 px").arg(width));
ui->imageHeightEdit->setText(QString("%1 px").arg(height));
ui->imageRatioEdit->setText(QString("%1 : %2").arg(n).arg(d));
image.setDevicePixelRatio(this->devicePixelRatioF());
image = image.scaled(imageSize * this->devicePixelRatioF(), Qt::KeepAspectRatio);
ui->imageLabel->setPixmap(QPixmap::fromImage(image));
ui->imageLabel->setFixedSize(PDFWidgetUtils::scaleDPI(this, imageSize));
}
void PDFPageContentEditorEditedItemSettings::selectImage()
{
QString imageDirectory;
QStringList pictureDirectiories = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation);
if (!pictureDirectiories.isEmpty())
{
imageDirectory = pictureDirectiories.last();
}
else
{
imageDirectory = QDir::currentPath();
}
QList<QByteArray> mimeTypes = QImageReader::supportedMimeTypes();
QStringList mimeTypeFilters;
for (const QByteArray& mimeType : mimeTypes)
{
mimeTypeFilters.append(mimeType);
}
QFileDialog dialog(this, tr("Select Image"));
dialog.setDirectory(imageDirectory);
dialog.setMimeTypeFilters(mimeTypeFilters);
dialog.selectMimeTypeFilter("image/svg+xml");
dialog.setAcceptMode(QFileDialog::AcceptOpen);
dialog.setFileMode(QFileDialog::ExistingFile);
if (dialog.exec() == QFileDialog::Accepted)
{
QString fileName = dialog.selectedFiles().constFirst();
QImageReader reader(fileName);
QImage image = reader.read();
if (!image.isNull())
{
setImage(image);
m_image = std::move(image);
}
}
}