mpaperno/maxlibqt

A collection of C++ classes and QtQuick QML components for use with the Qt framework.

        

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maxlibqt's Issues

MLDoubleSpinBox

Hi. I am writing my first QML application and am running into troubles. I am using your MLDoubleSpin box and it behaves slightly differently than the SpinBox. I am hoping you will see my mistake if I have one.

What I have works, until I press the + or - buttons on the spinbox. It then appears to overwrite my value and will no longer pull up the value from the c++ code. As far as I can tell, the SpinBox which uses integers, doesn't have this behaviour.

QML UI file
'ComboBox {
id: comboBox1
anchors.right: parent.right
anchors.rightMargin: 40
anchors.verticalCenter: parent.verticalCenter
textRole: "key"
valueRole: "value"
model: ListModel {
ListElement {
key: "7/8, 50 ohm"
value: 1
}
ListElement {
key: "1 5/8, 50 ohm"
value: 2
}
}
onCurrentValueChanged: _page3.preset = currentValue
}
.........
MLDoubleSpinBox {
id: spin3
anchors.right: parent.right
anchors.margins: 10
decimals: 3
from: 0
to: 30
value: _page3.outer
onValueChanged: _page3.outer = value
stepSize: 0.1
}
'

c++ header
'class CalcP3: public QObject
{
Q_OBJECT
Q_PROPERTY(double outer READ getOuter WRITE setOuter NOTIFY update)

.......
}'

c++ class
{
void CalcP3::setPreset(double value){
if (value == m_preset) return;
m_preset = value;
switch(m_preset) {
case 1:
m_outer = 0.785;
m_inner = 0.341;
break;
case 2:
m_outer = 1.527;
m_inner = 0.664;
break;
}
emit update();
}

........
'

MLDoubleSpinBox in Qt 5.12.2

Hello. I have found this while updating from Qt 9.1 to Qt 5.12.2

MLDoubleSpinBox has been used as delegate:

MLDoubleSpinBox {
                from: model.min
                to:   model.max
                stepSize: model.stepsize
                onValueChanged: model.value = value
                wrap: false
            }

In Qt 5.9.1 it works great as expected:

But not in Qt 5.12.2 (same model as in the above example):

OS: Win7x64
Compiler: Mingw5.3x86 for Qt5.9.1 and Mingw7.3x86 for Qt5.12.2

Thank you for the code sharing!

MLDoubleSpinBox

Hello! Оnce again) Playing around with MLDoubleSpinBox I have found that it's text field does not updates properly if you enter value out of [from - to] range more than one time.

For the instance, let's use "controls/test.qml". MLDoubleSpinbox instance with "Default" label prepared to work in range from 0 to 10.

Step 1. Preview qmlscene

Step 2. Write, for the instance, 20 in the text field by keyboard

Step 3. Press 'Enter', value adjusted to top limit - it is ok, as expected

Step 4. Once again write 20, or whatever

Step 5. Press 'Enter', oops - it is not working now (

Step 6. Even if I change focus, MLDoubleSpinBox still contains 20

My specs.: MS Windows7x64
Qt: 5.9.1, 5.12.2
Compiller: Mingw32

Prefix and Suffix properties for MLDoubleSpinBox

Your implementation of the DoubleSpinBox for Qt Quick Controls 2 is very interesting. Thanks!
But in order to port code using Qt Quick Controls 1, one would need the support for the prefix and suffix properties.
As mentioned in the doc: prefix and suffix.

I have added it to the floating point SpinBox example from Qt Quick Controls 2 doc like this:

    property string prefix: ''
    property string suffix: ''
    
    [...]

    textFromValue: function(value, locale) {
        return prefix + Number(value / 100).toLocaleString(locale, 'f', decimals) + suffix
    }

    valueFromText: function(text, locale) {
        var numberStr = text.replace(suffix, '').replace(prefix, '');
        return Number.fromLocaleString(locale, numberStr) * 100
    }

Make compatible with Qt 6

Some types have been renamed in Qt 6, for instance "RegExValidator" got "RegularExpressionValidator".