Adds 3 theme options - native, light, dark

[kyleboyle]

Allow QLog to adapt to the user's native theme, or allow the user to force a QLog defined light or dark theme independent of the user's current operating system settings.

I did not rename settings so as to allow the existing settings to operate as intended without migrations.

Kapture.2025-07-27.at.17.10.57.webm

[aa5sh]

@kyleboyle one thing I noticed with playing with this some is the inactive colors are not right when switching from native. Notice like the dxcluster send text box and the cw console:


That's the only thing I noticed that I'm not sure if you could correct or not. Looks good to me otherwise. Michael, AA5SH

[kyleboyle]

Ok cool I'll take a look. We should have full control over the colours used for either the light or dark settings.

[aa5sh]

I see where @foldynl is working on this in a testing branch. I was just looking at the code at the setLightMode and it would open the doors for a few other theme options:

`
void MainWindow::setBlueTheme()
{
FCT_IDENTIFICATION;

QPalette bluePalette;

// Backgrounds
QColor windowColor   = QColor(235, 240, 255);  // light blue background
QColor baseColor     = QColor(250, 250, 255);  // entry fields
QColor altBaseColor  = QColor(225, 230, 250);  // alternating rows

// Text colors
QColor textColor     = QColor(0, 0, 50);       // dark navy text
QColor disabledColor = QColor(150, 150, 170);  // muted blue-gray

// Buttons
QColor buttonColor   = QColor(230, 235, 250);  
QColor buttonText    = QColor(0, 0, 80);

// Highlights
QColor linkColor     = QColor(0, 51, 153);     // deep blue link
QColor highlight     = QColor(102, 153, 255);  // selection blue
QColor highlightText = Qt::white;

bluePalette.setColor(QPalette::Window, windowColor);
bluePalette.setColor(QPalette::WindowText, textColor);
bluePalette.setColor(QPalette::Base, baseColor);
bluePalette.setColor(QPalette::AlternateBase, altBaseColor);
bluePalette.setColor(QPalette::Text, textColor);
bluePalette.setColor(QPalette::Button, buttonColor);
bluePalette.setColor(QPalette::ButtonText, buttonText);
bluePalette.setColor(QPalette::BrightText, Qt::white);
bluePalette.setColor(QPalette::Link, linkColor);
bluePalette.setColor(QPalette::Highlight, highlight);
bluePalette.setColor(QPalette::HighlightedText, highlightText);

// Disabled state
bluePalette.setColor(QPalette::Disabled, QPalette::Text, disabledColor);
bluePalette.setColor(QPalette::Disabled, QPalette::ButtonText, disabledColor);
bluePalette.setColor(QPalette::Disabled, QPalette::HighlightedText, disabledColor);

qApp->setPalette(bluePalette);

}
`

[foldynl]

Yes, I have rebased this PR and modified/fxed it in a new branch. I plan to release it in the next release.

As for other themes, I don’t think this is the right approach. Qt itself already has styles that can be set using the -style parameter. If someone prefers a different style, it can be defined through this mechanism.