[Theme] Add update theme function

src/controls/theme.cpp

 #include "theme.h"
 #include "sizing.h"
 
+#include <QFile>
+#include <QDebug>
+#include <QJsonDocument>
+#include <QJsonObject>
+
 Theme::Theme(QObject *parent) : QObject(parent)
 {
     Sizing *size = new Sizing;
     m_dp = size->getDpScaleFactor();
-//Load defaults
+    //Load defaults
     m_itemWidthLarge = 320*m_dp;
     m_itemWidthMedium = 240*m_dp;
     m_itemWidthSmall = 120*m_dp;
@@ -41,8 +46,250 @@ Theme::Theme(QObject *parent) : QObject(parent)
     m_backgroundAccentColor = "#ffffff";
 }
 
-bool Theme::loadTheme(QString name)
+bool Theme::loadTheme(QString fileName)
 {
-    emit themeUpdate();
-    return true;
+    QString themeJsonString;
+
+    bool updated = false;
+
+    QFile themeFile;
+    themeFile.setFileName(fileName);
+    if(!themeFile.exists())
+    {
+        qDebug() << "Theme file " << fileName << " not found";
+        return false;
+    }
+
+    themeFile.open(QIODevice::ReadOnly | QIODevice::Text);
+    themeJsonString = themeFile.readAll();
+    themeFile.close();
+
+    QJsonDocument t = QJsonDocument::fromJson(themeJsonString.toUtf8());
+    QJsonObject theme = t.object();
+
+    if(theme.value("itemWidthLarge").toString().toFloat() != 0 &&
+            theme.value("itemWidthLarge").toString().toFloat() != m_itemWidthLarge)
+    {
+        m_itemWidthLarge = theme.value("itemWidthLarge").toString().toFloat()*m_dp;
+        emit itemWidthLargeChanged();
+        updated = true;
+    }
+    if(theme.value("itemWidthMedium").toString().toFloat() != 0 &&
+            theme.value("itemWidthMedium").toString().toFloat() != m_itemWidthMedium)
+    {
+        m_itemWidthMedium = theme.value("itemWidthMedium").toString().toFloat()*m_dp;
+        emit itemWidthMediumChanged();
+        updated = true;
+    }
+    if(theme.value("itemWidthSmall").toString().toFloat() != 0 &&
+            theme.value("itemWidthSmall").toString().toFloat() != m_itemWidthSmall)
+    {
+        m_itemWidthSmall = theme.value("itemWidthSmall").toString().toFloat()*m_dp;
+        emit itemWidthSmallChanged();
+        updated = true;
+    }
+    if(theme.value("itemWidthExtraSmall").toString().toFloat() != 0 &&
+            theme.value("itemWidthExtraSmall").toString().toFloat() != m_itemWidthExtraSmall)
+    {
+        m_itemWidthExtraSmall = theme.value("itemWidthExtraSmall").toString().toFloat()*m_dp;
+        emit itemWidthExtraSmallChanged();
+        updated = true;
+    }
+
+    if(theme.value("itemHeightHuge").toString().toFloat() != 0 &&
+            theme.value("itemHeightHuge").toString().toFloat() != m_itemHeightHuge)
+    {
+        m_itemHeightHuge = theme.value("itemHeightHuge").toString().toFloat()*m_dp;
+        emit itemHeightHugeChanged();
+        updated = true;
+    }
+    if(theme.value("itemHeightExtraLarge").toString().toFloat() != 0 &&
+            theme.value("itemHeightExtraLarge").toString().toFloat() != m_itemHeightExtraLarge)
+    {
+        m_itemHeightExtraLarge = theme.value("itemHeightExtraLarge").toString().toFloat()*m_dp;
+        emit itemHeightExtraLargeChanged();
+        updated = true;
+    }
+    if(theme.value("itemHeightLarge").toString().toFloat() != 0 &&
+            theme.value("itemHeightLarge").toString().toFloat() != m_itemHeightLarge)
+    {
+        m_itemHeightLarge = theme.value("itemHeightLarge").toString().toFloat()*m_dp;
+        emit itemHeightLargeChanged();
+        updated = true;
+    }
+    if(theme.value("itemHeightMedium").toString().toFloat() != 0 &&
+            theme.value("itemHeightMedium").toString().toFloat() != m_itemHeightMedium)
+    {
+        m_itemHeightMedium = theme.value("itemHeightMedium").toString().toFloat()*m_dp;
+        emit itemHeightMediumChanged();
+        updated = true;
+    }
+    if(theme.value("itemHeightSmall").toString().toFloat() != 0 &&
+            theme.value("itemHeightSmall").toString().toFloat() != m_itemHeightSmall)
+    {
+        m_itemHeightSmall = theme.value("itemHeightSmall").toString().toFloat()*m_dp;
+        emit itemHeightSmallChanged();
+        updated = true;
+    }
+    if(theme.value("itemHeightExtraSmall").toString().toFloat() != 0 &&
+            theme.value("itemHeightExtraSmall").toString().toFloat() != m_itemHeightExtraSmall)
+    {
+        m_itemHeightExtraSmall = theme.value("itemHeightExtraSmall").toString().toFloat()*m_dp;
+        emit itemHeightExtraSmallChanged();
+        updated = true;
+    }
+
+
+    if(theme.value("itemSpacingHuge").toString().toFloat() != 0 &&
+            theme.value("itemSpacingHuge").toString().toFloat() != m_itemSpacingHuge)
+    {
+        m_itemSpacingHuge = theme.value("itemSpacingHuge").toString().toFloat()*m_dp;
+        emit itemSpacingHugeChanged();
+        updated = true;
+    }
+    if(theme.value("itemSpacingLarge").toString().toFloat() != 0 &&
+            theme.value("itemSpacingLarge").toString().toFloat() != m_itemSpacingLarge)
+    {
+        m_itemSpacingLarge = theme.value("itemSpacingLarge").toString().toFloat()*m_dp;
+        emit itemSpacingLargeChanged();
+        updated = true;
+    }
+    if(theme.value("itemSpacingMedium").toString().toFloat() != 0 &&
+            theme.value("itemSpacingMedium").toString().toFloat() != m_itemSpacingMedium)
+    {
+        m_itemSpacingMedium = theme.value("itemSpacingMedium").toString().toFloat()*m_dp;
+        emit itemSpacingMediumChanged();
+        updated = true;
+    }
+    if(theme.value("itemSpacingSmall").toString().toFloat() != 0 &&
+            theme.value("itemSpacingSmall").toString().toFloat() != m_itemSpacingSmall)
+    {
+        m_itemSpacingSmall = theme.value("itemSpacingSmall").toString().toFloat()*m_dp;
+        emit itemSpacingSmallChanged();
+        updated = true;
+    }
+    if(theme.value("itemSpacingExtraSmall").toString().toFloat() != 0 &&
+            theme.value("itemSpacingExtraSmall").toString().toFloat() != m_itemSpacingExtraSmall)
+    {
+        m_itemSpacingExtraSmall = theme.value("itemSpacingExtraSmall").toString().toFloat()*m_dp;
+        emit itemSpacingExtraSmallChanged();
+        updated = true;
+    }
+
+    if(theme.value("fontSizeExtraLarge").toInt() != 0 &&
+            theme.value("fontSizeExtraLarge").toInt() != m_fontSizeExtraLarge)
+    {
+        m_fontSizeExtraLarge = theme.value("itemSpacingExtraSmall").toInt()*m_dp;
+        emit fontSizeExtraLargeChanged();
+        updated = true;
+    }
+    if(theme.value("fontSizeLarge").toInt() != 0 &&
+            theme.value("fontSizeLarge").toInt() != m_fontSizeLarge)
+    {
+        m_fontSizeLarge = theme.value("fontSizeLarge").toInt()*m_dp;
+        emit fontSizeLargeChanged();
+        updated = true;
+    }
+    if(theme.value("fontSizeMedium").toInt() != 0 &&
+            theme.value("fontSizeMedium").toInt() != m_fontSizeMedium)
+    {
+        m_fontSizeMedium = theme.value("fontSizeMedium").toInt()*m_dp;
+        emit fontSizeMediumChanged();
+        updated = true;
+    }
+    if(theme.value("fontSizeSmall").toInt() != 0 &&
+            theme.value("fontSizeSmall").toInt() != m_fontSizeSmall)
+    {
+        m_fontSizeSmall = theme.value("fontSizeSmall").toInt()*m_dp;
+        emit fontSizeSmallChanged();
+        updated = true;
+    }
+    if(theme.value("fontSizeTiny").toInt() != 0 &&
+            theme.value("fontSizeTiny").toInt() != m_fontSizeTiny)
+    {
+        m_fontSizeTiny = theme.value("fontSizeTiny").toInt()*m_dp;
+        emit fontSizeTinyChanged();
+        updated = true;
+    }
+    if(theme.value("fontWeightLarge").toInt() != 0 &&
+            theme.value("fontWeightLarge").toInt() != m_fontWeightLarge)
+    {
+        m_fontWeightLarge = theme.value("fontWeightLarge").toInt()*m_dp;
+        emit fontWeightLargeChanged();
+        updated = true;
+    }
+    if(theme.value("fontWeightMedium").toInt() != 0 &&
+            theme.value("fontWeightMedium").toInt() != m_fontWeightMedium)
+    {
+        m_fontWeightMedium = theme.value("fontWeightMedium").toInt()*m_dp;
+        emit fontWeightMediumChanged();
+        updated = true;
+    }
+
+    if(theme.value("fontFamily").toString() != "" &&
+            theme.value("fontFamily").toString() != m_fontFamily)
+    {
+        QFile fontFile;
+        fontFile.setFileName(theme.value("fontFamily").toString());
+        if(!themeFile.exists())
+        {
+            qDebug() << "Font file " << fileName << " not found";
+        }
+        else
+        {
+            m_fontFamily = theme.value("fontFamily").toString();
+            emit fontFamilyChanged();
+            updated = true;
+        }
+    }
+
+    if(theme.value("accentColor").toString() != "" &&
+            theme.value("accentColor").toString()!= m_accentColor)
+    {
+        m_accentColor = theme.value("accentColor").toString();
+        emit accentColorChanged();
+        updated = true;
+    }
+    if(theme.value("fillColor").toString() != "" &&
+            theme.value("fillColor").toString() != m_fillColor)
+    {
+        m_fillColor = theme.value("fillColor").toString();
+        emit fillColorChanged();
+        updated = true;
+    }
+    if(theme.value("fillDarkColor").toString() != "" &&
+            theme.value("fillDarkColor").toString() != m_fillDarkColor)
+    {
+        m_fillDarkColor = theme.value("fillDarkColor").toString();
+        emit fillDarkColorChanged();
+        updated = true;
+    }
+    if(theme.value("textColor").toString() != "" &&
+            theme.value("textColor").toString() != m_textColor)
+    {
+        m_textColor = theme.value("textColor").toString();
+        emit textColorChanged();
+        updated = true;
+    }
+    if(theme.value("backgroundColor").toString() != "" &&
+            theme.value("backgroundColor").toString() != m_backgroundColor)
+    {
+        m_backgroundColor = theme.value("backgroundColor").toString();
+        emit backgroundColorChanged();
+        updated = true;
+    }
+    if(theme.value("backgroundAccentColor").toString() != "" &&
+            theme.value("backgroundAccentColor").toString() != m_backgroundAccentColor)
+    {
+        m_backgroundAccentColor = theme.value("backgroundAccentColor").toString();
+        emit backgroundAccentColorChanged();
+        updated = true;
+    }
+
+    if(updated)
+    {
+        emit themeUpdate();
+        return true;
+    }
+    return false;
 }

src/controls/theme.h

@@ -45,7 +45,7 @@ class Theme : public QObject
 public:
     explicit Theme(QObject *parent = 0);
 
-    bool loadTheme(QString name);
+    bool loadTheme(QString fileName);
     qreal itemWidthLarge(){return m_itemWidthLarge;}
     qreal itemWidthMedium(){return m_itemWidthMedium;}
     qreal itemWidthSmall(){return m_itemWidthSmall;}