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Use Color / Font,FontSize parameterized tables

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  • J Offline
    J Offline
    Jehyeok
    wrote on 18 May 2016, 01:44 last edited by
    #1

    Today I use hard coded color, font, fontsize in my qml and code.
    Such as,

    [QML]
    Rectangle {
    width: parent.width
    height : 75
    color: "#666666"
    }
    Text {
    color: "#FFFFFF"
    font.family: "Open Sans"
    font.pixelSize: 11
    }

    [CPP]
    list itemitem->setProperty(propertyName.c_str(), value);

    However, I would like to switch those to parameterized tables. And probably I could expand those to schme and theme for later.
    such as parser class to retrieve value from XML, Jason tables
    <XML>
    <Color x:Key="HighlightColor">#FF086F9E</Color>
    <Color x:Key="AccentColor">#CC119EDA</Color>
    ....

    Is there any simple way to manage them?
    I would like to ask you any Ideas for this.

    P 1 Reply Last reply 18 May 2016, 05:12
    0
    • J Jehyeok
      18 May 2016, 01:44

      Today I use hard coded color, font, fontsize in my qml and code.
      Such as,

      [QML]
      Rectangle {
      width: parent.width
      height : 75
      color: "#666666"
      }
      Text {
      color: "#FFFFFF"
      font.family: "Open Sans"
      font.pixelSize: 11
      }

      [CPP]
      list itemitem->setProperty(propertyName.c_str(), value);

      However, I would like to switch those to parameterized tables. And probably I could expand those to schme and theme for later.
      such as parser class to retrieve value from XML, Jason tables
      <XML>
      <Color x:Key="HighlightColor">#FF086F9E</Color>
      <Color x:Key="AccentColor">#CC119EDA</Color>
      ....

      Is there any simple way to manage them?
      I would like to ask you any Ideas for this.

      P Offline
      P Offline
      p3c0
      Moderators
      wrote on 18 May 2016, 05:12 last edited by
      #2

      Hi @Jehyeok,

      One way would be to create a custom component which reads the XML or JSON values. This component will provide individual properties which will contain the actual data. for eg. font, color etc.. Register this component and make it available to QML.
      Something like:

      import ThemeLoader 1.0
      
      ThemeLoader {
         id: myTheme
      }
      
      //Use it in QML
      
      Text {
        font: myTheme.font
        color: myTheme.color
        ...
      }
      

      If the JSON or XML changes in the background you can re-read it load the new values in custom component and notify the changes by emitting signals. Now on QML side as we have binded these properties to other components they will get updated on the fly.
      Hope this is what you were thinking to do...

      157

      1 Reply Last reply
      1
      • J Offline
        J Offline
        Jehyeok
        wrote on 20 May 2016, 05:44 last edited by
        #3

        @p3c0 Thank you for sharing the idea.
        I would like to use a color theme globally.
        So, I structured a color xml and I parsed a xml file to build my color map(QMap).
        And access the color from the Color object from rootcontext.
        Now I am able to set all default theme colors on UI components. :)

        Furthermore, I would like to apply theme changes in run time on the fly.
        Such as, setting dialog -> change theme -> Set button -> Bring another theme color map form XML -> update UI? ->See color changes in Window
        And I succeeded update QMap data (replace a value by new value).
        But, it didn't update UI(repaint, redraw) to see the changes right away.
        I could propagate event when I move tab or invoke events that changes colors. But it is not what I want. I want to see changes right away.

        Do you know how to apply them to all my windows in run time on the fly?

        P 1 Reply Last reply 20 May 2016, 06:45
        0
        • J Jehyeok
          20 May 2016, 05:44

          @p3c0 Thank you for sharing the idea.
          I would like to use a color theme globally.
          So, I structured a color xml and I parsed a xml file to build my color map(QMap).
          And access the color from the Color object from rootcontext.
          Now I am able to set all default theme colors on UI components. :)

          Furthermore, I would like to apply theme changes in run time on the fly.
          Such as, setting dialog -> change theme -> Set button -> Bring another theme color map form XML -> update UI? ->See color changes in Window
          And I succeeded update QMap data (replace a value by new value).
          But, it didn't update UI(repaint, redraw) to see the changes right away.
          I could propagate event when I move tab or invoke events that changes colors. But it is not what I want. I want to see changes right away.

          Do you know how to apply them to all my windows in run time on the fly?

          P Offline
          P Offline
          p3c0
          Moderators
          wrote on 20 May 2016, 06:45 last edited by
          #4

          @Jehyeok Instead of setting it as a context property I would suggest you to create and register it as a singleton object as explained earlier. This way you can easily bind the properties from the singleton object. And thus on XML update from singleton the binded properties in your QML too gets updated.

          157

          J 1 Reply Last reply 23 May 2016, 05:11
          1
          • P p3c0
            20 May 2016, 06:45

            @Jehyeok Instead of setting it as a context property I would suggest you to create and register it as a singleton object as explained earlier. This way you can easily bind the properties from the singleton object. And thus on XML update from singleton the binded properties in your QML too gets updated.

            J Offline
            J Offline
            Jehyeok
            wrote on 23 May 2016, 05:11 last edited by Jehyeok
            #5

            @p3c0 Thank you. I got point. and it wokrs indeed.
            I am able to get the singleton object (ThemeLoader) in qml using 'qmlRegisterSingletonType'.
            ex, MYQML.qml
            import ThemeLoader 1.0
            Text {
            color: ThemeLoader.colorText
            }

            Two more questions,

            1. How I can get the singleton object and call the function in cpp code?
            2. How to notify the changes in MYQML.qml Text by emitting signals when ThemeLoader colorText changes? Also how do you emmit signals when QMap property changes?
            P 1 Reply Last reply 23 May 2016, 08:44
            0
            • J Jehyeok
              23 May 2016, 05:11

              @p3c0 Thank you. I got point. and it wokrs indeed.
              I am able to get the singleton object (ThemeLoader) in qml using 'qmlRegisterSingletonType'.
              ex, MYQML.qml
              import ThemeLoader 1.0
              Text {
              color: ThemeLoader.colorText
              }

              Two more questions,

              1. How I can get the singleton object and call the function in cpp code?
              2. How to notify the changes in MYQML.qml Text by emitting signals when ThemeLoader colorText changes? Also how do you emmit signals when QMap property changes?
              P Offline
              P Offline
              p3c0
              Moderators
              wrote on 23 May 2016, 08:44 last edited by
              #6

              @Jehyeok

              How I can get the singleton object and call the function in cpp code?

              Like this.

              How to notify the changes in MYQML.qml Text by emitting signals when ThemeLoader colorText changes?

              By using Q_PROPERTY. AddNOTIFY to allow QML bindings.

              Also how do you emmit signals when QMap property changes?

              Perhaps in the same way ? Using datatype as QMap in Q_PROPERTY. But IMO instead of using QMap of properties I think its better to use individual properties so that the binding is executed per property.

              157

              J 1 Reply Last reply 23 May 2016, 09:03
              1
              • P p3c0
                23 May 2016, 08:44

                @Jehyeok

                How I can get the singleton object and call the function in cpp code?

                Like this.

                How to notify the changes in MYQML.qml Text by emitting signals when ThemeLoader colorText changes?

                By using Q_PROPERTY. AddNOTIFY to allow QML bindings.

                Also how do you emmit signals when QMap property changes?

                Perhaps in the same way ? Using datatype as QMap in Q_PROPERTY. But IMO instead of using QMap of properties I think its better to use individual properties so that the binding is executed per property.

                J Offline
                J Offline
                Jehyeok
                wrote on 23 May 2016, 09:03 last edited by Jehyeok
                #7

                @p3c0
                Thank you for quick reply.
                I take your advice and I will use individual properties. But it doesn't work ...

                Please take a look

                Theme.h
                Q_PROPERTY(QColor color READ getColor WRITE setColor NOTIFY colorChanged)
                public:
                void setColor(QColor inputcolor)
                {
                m_color= inputcolor;
                emit colorChanged();
                }
                QColor getColor() const
                {
                return m_color;
                }
                signals:
                void colorChanged();
                private:
                QColor m_color;

                Theme.cpp
                // init
                setColor("red")

                // later to see changes, supposed to update color on text
                setColor("blue")

                text.qml
                Text {
                id: text_
                color: Theme.color

                P 1 Reply Last reply 23 May 2016, 09:40
                0
                • J Jehyeok
                  23 May 2016, 09:03

                  @p3c0
                  Thank you for quick reply.
                  I take your advice and I will use individual properties. But it doesn't work ...

                  Please take a look

                  Theme.h
                  Q_PROPERTY(QColor color READ getColor WRITE setColor NOTIFY colorChanged)
                  public:
                  void setColor(QColor inputcolor)
                  {
                  m_color= inputcolor;
                  emit colorChanged();
                  }
                  QColor getColor() const
                  {
                  return m_color;
                  }
                  signals:
                  void colorChanged();
                  private:
                  QColor m_color;

                  Theme.cpp
                  // init
                  setColor("red")

                  // later to see changes, supposed to update color on text
                  setColor("blue")

                  text.qml
                  Text {
                  id: text_
                  color: Theme.color

                  P Offline
                  P Offline
                  p3c0
                  Moderators
                  wrote on 23 May 2016, 09:40 last edited by
                  #8

                  @Jehyeok That's strange. Does the Theme class haveQ_OBJECT macro ?
                  Can you share rest of the code ? When are you changing the color to new one.

                  157

                  J 1 Reply Last reply 23 May 2016, 10:08
                  0
                  • P p3c0
                    23 May 2016, 09:40

                    @Jehyeok That's strange. Does the Theme class haveQ_OBJECT macro ?
                    Can you share rest of the code ? When are you changing the color to new one.

                    J Offline
                    J Offline
                    Jehyeok
                    wrote on 23 May 2016, 10:08 last edited by Jehyeok
                    #9

                    @p3c0 this is details

                    !!!! PS text color has been changed !! but the current top position dialog which triggered the change theme only.
                    Not main and existed other windows !! I would like to update colors in all window

                    Header
                    class SPColors : public QObject
                    {
                    Q_OBJECT
                    Q_PROPERTY(QColor color READ getColor WRITE setColor NOTIFY colorChanged)
                    public:
                    SPColors();
                    virtual ~SPColors();

                    		Q_INVOKABLE QString getTheme() const;
                    		Q_INVOKABLE bool setTheme(const QString& theme);
                    		void setColor(QColor inputcolor)
                    		{
                    			color = inputcolor;
                    			emit colorChanged();
                    		}
                    		QColor getColor() const
                    		{
                    			return color;
                    		}
                    	signals:
                    		void colorChanged();
                    
                    	private:
                    		QString currentTheme_;
                    		QColor color;
                    	};
                    

                    CPP
                    SPColors::SPColors()
                    {
                    setColor(QColor("#FFFFFF"));
                    }

                    setTheme(...String theme) // this is called by other dialog
                    {
                    if (theme=="white")
                    setColor(QColor("#000000"));
                    else
                    setColor(QColor("#FFFFFF"));
                    }

                    QML
                    Text {
                    id: text_
                    color: SPColors.color

                    P 1 Reply Last reply 23 May 2016, 10:22
                    0
                    • J Jehyeok
                      23 May 2016, 10:08

                      @p3c0 this is details

                      !!!! PS text color has been changed !! but the current top position dialog which triggered the change theme only.
                      Not main and existed other windows !! I would like to update colors in all window

                      Header
                      class SPColors : public QObject
                      {
                      Q_OBJECT
                      Q_PROPERTY(QColor color READ getColor WRITE setColor NOTIFY colorChanged)
                      public:
                      SPColors();
                      virtual ~SPColors();

                      		Q_INVOKABLE QString getTheme() const;
                      		Q_INVOKABLE bool setTheme(const QString& theme);
                      		void setColor(QColor inputcolor)
                      		{
                      			color = inputcolor;
                      			emit colorChanged();
                      		}
                      		QColor getColor() const
                      		{
                      			return color;
                      		}
                      	signals:
                      		void colorChanged();
                      
                      	private:
                      		QString currentTheme_;
                      		QColor color;
                      	};
                      

                      CPP
                      SPColors::SPColors()
                      {
                      setColor(QColor("#FFFFFF"));
                      }

                      setTheme(...String theme) // this is called by other dialog
                      {
                      if (theme=="white")
                      setColor(QColor("#000000"));
                      else
                      setColor(QColor("#FFFFFF"));
                      }

                      QML
                      Text {
                      id: text_
                      color: SPColors.color

                      P Offline
                      P Offline
                      p3c0
                      Moderators
                      wrote on 23 May 2016, 10:22 last edited by
                      #10

                      @Jehyeok

                      !!!! PS text color has been changed !! but the current top position dialog only. Not main window !! I would like to update colors in all window

                      Good. Apply the same logic to other windows too.

                      157

                      J 1 Reply Last reply 23 May 2016, 10:39
                      0
                      • P p3c0
                        23 May 2016, 10:22

                        @Jehyeok

                        !!!! PS text color has been changed !! but the current top position dialog only. Not main window !! I would like to update colors in all window

                        Good. Apply the same logic to other windows too.

                        J Offline
                        J Offline
                        Jehyeok
                        wrote on 23 May 2016, 10:39 last edited by
                        #11

                        @p3c0
                        Oh may you miss-understood.

                        I set this color in the Text component which is used all my windows.
                        MyText.qml
                        Text
                        {
                        color: SPColors.color
                        }

                        DialogA.qml
                        MyText
                        {
                        }
                        DialogB.qml
                        MyText
                        {
                        }

                        I expected to see all text color changes (in dialogA, dialogB).
                        But it is applied only one dialog(DialogA which trigger setTheme and emit colorChanged).
                        Do you know how to apply it in entire windows?

                        P 1 Reply Last reply 23 May 2016, 11:05
                        0
                        • J Jehyeok
                          23 May 2016, 10:39

                          @p3c0
                          Oh may you miss-understood.

                          I set this color in the Text component which is used all my windows.
                          MyText.qml
                          Text
                          {
                          color: SPColors.color
                          }

                          DialogA.qml
                          MyText
                          {
                          }
                          DialogB.qml
                          MyText
                          {
                          }

                          I expected to see all text color changes (in dialogA, dialogB).
                          But it is applied only one dialog(DialogA which trigger setTheme and emit colorChanged).
                          Do you know how to apply it in entire windows?

                          P Offline
                          P Offline
                          p3c0
                          Moderators
                          wrote on 23 May 2016, 11:05 last edited by
                          #12

                          @Jehyeok It should work too. I tested a similar case and it works.

                          Do you know how to apply it in entire windows?

                          The way you tried should work.

                          157

                          J 1 Reply Last reply 24 May 2016, 08:36
                          1
                          • P p3c0
                            23 May 2016, 11:05

                            @Jehyeok It should work too. I tested a similar case and it works.

                            Do you know how to apply it in entire windows?

                            The way you tried should work.

                            J Offline
                            J Offline
                            Jehyeok
                            wrote on 24 May 2016, 08:36 last edited by
                            #13

                            @p3c0 You are right !!!
                            Beautiful !!

                            1 Reply Last reply
                            0

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                            18 May 2016, 01:44

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