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Issue #99: Icons for dark mode

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Jakub Melka
2023-11-26 19:15:20 +01:00
parent f5cb2a17af
commit 1c5c7da5ba
8 changed files with 110 additions and 0 deletions
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48
Pdf4QtLib/sources/pdfwidgetutils.cpp
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@ -16,11 +16,15 @@
// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
#include "pdfwidgetutils.h"
#include "pdfcolorconvertor.h"
#include "pdfdbgheap.h"
#include <QDialog>
#include <QLayout>
#include <QPainter>
#include <QPixmap>
#include <QGroupBox>
#include <QApplication>
#ifdef Q_OS_MAC
int qt_default_dpi_x() { return 72; }
@ -161,4 +165,48 @@ void PDFWidgetUtils::style(QWidget* widget)
}
}
bool PDFWidgetUtils::isDarkTheme()
{
QPalette palette = QApplication::palette();
QColor backgroundColor = palette.color(QPalette::Window);
QColor textColor = palette.color(QPalette::WindowText);
return backgroundColor.lightness() < textColor.lightness();
}
void PDFWidgetUtils::convertActionForDarkTheme(QAction* action, QSize iconSize, qreal devicePixelRatioF)
{
if (!action)
{
return;
}
QIcon icon = action->icon();
if (!icon.isNull())
{
icon = pdf::PDFWidgetUtils::convertIconForDarkTheme(icon, iconSize, devicePixelRatioF);
action->setIcon(icon);
}
}
QIcon PDFWidgetUtils::convertIconForDarkTheme(QIcon icon, QSize iconSize, qreal devicePixelRatioF)
{
QPixmap pixmap(iconSize * devicePixelRatioF);
pixmap.setDevicePixelRatio(devicePixelRatioF);
pixmap.fill(Qt::transparent);
QPainter painter(&pixmap);
icon.paint(&painter, QRect(0, 0, iconSize.width(), iconSize.height()));
painter.end();
PDFColorConvertor convertor;
convertor.setMode(PDFColorConvertor::Mode::InvertedColors);
QImage image = pixmap.toImage();
image = convertor.convert(image);
pixmap = QPixmap::fromImage(image);
return QIcon(pixmap);
}
} // namespace pdf