[Sizing] add simple sizing class

rpm/qtquickcontrols-nemo.spec

 Name:       qt5-qtquickcontrols-nemo
 Summary:    Nemomobile Qt Quick Controls 
-Version:    5.1.3
+Version:    5.2.0
 Release:    nemo1
 Group:      Qt/Qt
 License:    LGPLv2.1 with exception or GPLv3

src/controls/controls.pro

@@ -34,7 +34,8 @@ HEADERS += \
     qquickfilteringmousearea.h \
     nemoimageprovider.h \
     themedaemon/mlocalthemedaemonclient.h \
-    themedaemon/mabstractthemedaemonclient.h
+    themedaemon/mabstractthemedaemonclient.h \
+    sizing.h
 
 SOURCES += \
     qquicknemocontrolsextensionplugin.cpp \
@@ -44,7 +45,8 @@ SOURCES += \
     qquickfilteringmousearea.cpp \
     nemoimageprovider.cpp \
     themedaemon/mlocalthemedaemonclient.cpp \
-    themedaemon/mabstractthemedaemonclient.cpp
+    themedaemon/mabstractthemedaemonclient.cpp \
+    sizing.cpp
 
 target.path = $$[QT_INSTALL_QML]/$$PLUGIN_IMPORT_PATH
 

src/controls/qquicknemocontrolsextensionplugin.cpp

@@ -25,6 +25,7 @@
 #include "nemopage.h"
 #include "qquickfilteringmousearea.h"
 #include "nemoimageprovider.h"
+#include "sizing.h"
 
 QQuickNemoControlsExtensionPlugin::QQuickNemoControlsExtensionPlugin(QObject *parent) :
     QQmlExtensionPlugin(parent)
@@ -48,7 +49,13 @@ void QQuickNemoControlsExtensionPlugin::registerTypes(const char *uri)
 
 void QQuickNemoControlsExtensionPlugin::initializeEngine(QQmlEngine *engine, const char *uri)
 {
+    Sizing *sizing = new Sizing();
+
     QQmlExtensionPlugin::initializeEngine(engine,uri);
+    QQmlContext* context = engine->rootContext();
+
+    context->setContextProperty("mm",sizing->getScaleFactor());
+
     engine->addImageProvider(QLatin1String("theme"), new NemoImageProvider);
 }
 

src/controls/sizing.cpp

+#include "sizing.h"
+
+#include <QScreen>
+#include <QDebug>
+#include <QGuiApplication>
+
+Sizing::Sizing(QObject *parent) : QObject(parent)
+{
+    m_valid = false;
+    m_scale_factor = 10;
+
+    m_p_height = qgetenv("QT_QPA_EGLFS_PHYSICAL_HEIGHT").toInt();
+    m_p_width = qgetenv("QT_QPA_EGLFS_PHYSICAL_WIDTH").toInt();
+
+    QScreen *screen = QGuiApplication::primaryScreen();
+
+    m_height = screen->size().height();
+    m_width = screen->size().width();
+
+    if(m_p_height > 0 && m_p_width >0){
+        m_valid = true;
+        scaleFactor();
+    }else{
+        if(m_p_height == 0){
+            qWarning("QT_QPA_EGLFS_PHYSICAL_HEIGHT is not set!");
+        }
+
+        if(m_p_width == 0){
+            qWarning("QT_QPA_EGLFS_PHYSICAL_WIDTH is not set!");
+        }
+
+        qWarning("Device sizing don`t work");
+    }
+}
+
+void Sizing::scaleFactor()
+{
+    if(m_p_width != 0){
+        m_scale_factor = m_width/m_p_width;
+    }
+
+    qDebug() << "Scale factor is " << m_scale_factor;
+}
+
+

src/controls/sizing.h

+#ifndef SIZING_H
+#define SIZING_H
+
+#include <QObject>
+
+class Sizing : public QObject
+{
+    Q_OBJECT
+public:
+    explicit Sizing(QObject *parent = 0);
+    bool isValid(){return m_valid;}
+    int getScaleFactor(){return m_scale_factor;}
+
+private:
+    bool m_valid;
+
+    int m_p_width;
+    int m_p_height;
+    int m_width;
+    int m_height;
+
+    int m_scale_factor;
+
+    void scaleFactor();
+};
+
+#endif // SIZING_H