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Editing images

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This commit is contained in:
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);
}
}
}

5
Pdf4QtLibWidgets/sources/pdfpagecontenteditorediteditemsettings.h
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@ -37,9 +37,14 @@ public:
virtual ~PDFPageContentEditorEditedItemSettings() override;
void loadFromElement(PDFPageContentElementEdited* editedElement);
void saveToElement(PDFPageContentElementEdited* editedElement);
private:
void setImage(QImage image);
void selectImage();
Ui::PDFPageContentEditorEditedItemSettings* ui;
QImage m_image;
};
} // namespace pdf

77
Pdf4QtLibWidgets/sources/pdfpagecontenteditorediteditemsettings.ui
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@ -17,7 +17,7 @@
<item>
<widget class="QTabWidget" name="tabWidget">
<property name="currentIndex">
<number>0</number>
<number>1</number>
</property>
<widget class="QWidget" name="textTab">
<attribute name="title">
@ -48,14 +48,87 @@
<property name="title">
<string>Image Content</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_5">
<layout class="QVBoxLayout" name="verticalLayout_5" stretch="0,1,0">
<item>
<layout class="QGridLayout" name="gridLayout">
<item row="1" column="0">
<widget class="QLabel" name="imageHeightLabel">
<property name="text">
<string>Height</string>
</property>
</widget>
</item>
<item row="0" column="0">
<widget class="QLabel" name="imageWidthLabel">
<property name="text">
<string>Width</string>
</property>
</widget>
</item>
<item row="1" column="2">
<widget class="QLineEdit" name="imageHeightEdit">
<property name="readOnly">
<bool>true</bool>
</property>
</widget>
</item>
<item row="0" column="2">
<widget class="QLineEdit" name="imageWidthEdit">
<property name="readOnly">
<bool>true</bool>
</property>
</widget>
</item>
<item row="2" column="0">
<widget class="QLabel" name="imageRatioLabel">
<property name="text">
<string>Ratio</string>
</property>
</widget>
</item>
<item row="2" column="2">
<widget class="QLineEdit" name="imageRatioEdit">
<property name="readOnly">
<bool>true</bool>
</property>
</widget>
</item>
</layout>
</item>
<item>
<widget class="QLabel" name="imageLabel">
<property name="autoFillBackground">
<bool>true</bool>
</property>
<property name="text">
<string/>
</property>
</widget>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QPushButton" name="loadImageButton">
<property name="text">
<string>Load Image</string>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
</layout>
</widget>
</item>

2
Pdf4QtLibWidgets/sources/pdfpagecontenteditorstylesettings.cpp
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@ -282,7 +282,7 @@ bool PDFPageContentEditorStyleSettings::showEditElementStyleDialog(QWidget* pare
if (dialog.exec() == QDialog::Accepted)
{
widget->saveToElement(editedElement);
}
}
else

5
Pdf4QtLibWidgets/sources/pdfpagecontentelements.cpp
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@ -2579,8 +2579,11 @@ void PDFPageContentElementEdited::drawPage(QPainter* painter,
painter->translate(rect.bottomLeft());
painter->scale(1.0, -1.0);
QRect transformedRect(0.0, 0.0, rect.width(), rect.height());
QImage image = imageElement->getImage();
painter->drawImage(rect, image);
painter->fillRect(transformedRect, Qt::white);
painter->drawImage(transformedRect, image);
}
if (const PDFEditedPageContentElementPath* pathElement = m_element->asPath())

1
Pdf4QtLibWidgets/sources/pdfpagecontentelements.h
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@ -370,6 +370,7 @@ public:
virtual QString getDescription() const override;
const PDFEditedPageContentElement* getElement() const { return m_element.get(); }
PDFEditedPageContentElement* getElement() { return m_element.get(); }
private:
std::unique_ptr<PDFEditedPageContentElement> m_element;