[Qt-interest] QAbstractSpinBox question

[Doug Stewart]

*I* am new to qt and C++ === so any suggestions will be appreciated.


I am trying to make a text spinbox from QAbstractSpinBox such that the
color of each item

in the spinbox is different. So far I have the forground text changing
color like I want it by using

QPalette::Text

I then tried to change the background color by using

QPalette::Window    but this does not work.


Is there a way to change the background color in my textspinbox?



Doug





This is  textspinbox.cpp



#include "textspinbox.h"

#include <QAbstractSpinBox>

#include <QDebug>

#include <QPalette>

 TextSpinBox::TextSpinBox(QWidget* parent)

    : QAbstractSpinBox(parent), m_list(0), m_index(0), m_colorMap()

{

    this->setWrapping(true);

    this->stepEnabled();

    this->setMinimumSize(150, 30);

     connect(this, SIGNAL(colorChanged(QString)),

            this, SLOT(colorChangedSlot(QString)));

}

 TextSpinBox::~TextSpinBox()

{

    /* Set the pointer to null, and then the stack part of it will be

     * handled regularly.*/

    m_list = 0;

}

 void TextSpinBox::setText(const QString& text)

{

    if(m_list != 0)

    {

       m_index = m_list->indexOf(text);

       this->lineEdit()->setText(m_list->at(m_index));

        setColourMap();

       emit colorChanged(m_list->at(m_index));

   }

   else

       qDebug() << "The TextSpinBog QStringList is not initialized properly.";

}

/* This is the best way, and most secure way of setting up the spin box. */

void TextSpinBox::init(const QStringList &list, const QString &text)

{

    m_list = &list;

    m_index = m_list->indexOf(text);

    this->lineEdit()->setText(m_list->at(m_index));

     setColourMap();

    emit colorChanged(m_list->at(m_index));

}

 void TextSpinBox::stepBy(int steps)

{

    m_index += steps;

     if( m_index >= m_list->size() )

        m_index = 0;

    else if( m_index < 0 )

        m_index = m_list->size()-1;

     this->lineEdit()->setText( m_list->at(m_index) );

     emit colorChanged(m_list->at(m_index));

    emit textChanged();

 }

 QAbstractSpinBox::StepEnabled TextSpinBox::stepEnabled() const

{

    return QAbstractSpinBox::StepDownEnabled|QAbstractSpinBox::StepUpEnabled;

}

 void TextSpinBox::colorChangedSlot(QString text)

{

    //qDebug() << " Colour was changed.";

    QPalette p = this->palette();

    p.setColor(QPalette::Text, m_colorMap.value(text));

    setPalette(p);

}

 void TextSpinBox::setColourMap()

{

    int size = 128 / m_list->size();

    for (int i = m_list->size() -1 ; i >= 0 ; i--)

    {

        /*These colours are hard coded to try to match the present

          octave colour settings in a different part of the program.

         */

        QColor color( 30, 127 + i*size, 127 - i*size);

        m_colorMap.insert(m_list->at(i), color);

    }

}


-- 
DAS

https://linuxcounter.net/user/206392.html
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