build: trial version target

builds now app and trail target, lib_gui added, istrail function

src/lib_gui/qt/utility/QtDeviceScaledPixmap.cpp

@@ -0,0 +1,50 @@
+#include "qt/utility/QtDeviceScaledPixmap.h"
+
+#include <QApplication>
+
+qreal QtDeviceScaledPixmap::devicePixelRatio()
+{
+	QApplication* app = dynamic_cast<QApplication*>(QCoreApplication::instance());
+	return app->devicePixelRatio();
+}
+
+QtDeviceScaledPixmap::QtDeviceScaledPixmap(QString filePath)
+	: m_pixmap(filePath)
+{
+	m_pixmap.setDevicePixelRatio(devicePixelRatio());
+}
+
+QtDeviceScaledPixmap::~QtDeviceScaledPixmap() {}
+
+const QPixmap& QtDeviceScaledPixmap::pixmap() const
+{
+	return m_pixmap;
+}
+
+qreal QtDeviceScaledPixmap::width() const
+{
+	return m_pixmap.width() / devicePixelRatio();
+}
+
+qreal QtDeviceScaledPixmap::height() const
+{
+	return m_pixmap.height() / devicePixelRatio();
+}
+
+void QtDeviceScaledPixmap::scaleToWidth(int width)
+{
+	m_pixmap = m_pixmap.scaledToWidth(width * devicePixelRatio(), Qt::SmoothTransformation);
+	m_pixmap.setDevicePixelRatio(devicePixelRatio());
+}
+
+void QtDeviceScaledPixmap::scaleToHeight(int height)
+{
+	m_pixmap = m_pixmap.scaledToHeight(height * devicePixelRatio(), Qt::SmoothTransformation);
+	m_pixmap.setDevicePixelRatio(devicePixelRatio());
+}
+
+void QtDeviceScaledPixmap::mirror(bool horizontal, bool vertical)
+{
+	m_pixmap = QPixmap::fromImage(m_pixmap.toImage().mirrored(horizontal, vertical));
+	m_pixmap.setDevicePixelRatio(devicePixelRatio());
+}