Method loadThemeConfig

src/backend/worksheet/TextLabel.cpp:1241–1279

############################################################################## ######################### Theme management ################################## ##############################################################################

// #########################  Theme management ##################################
// ##############################################################################
void TextLabel::loadThemeConfig(const KConfig& config) {
	DEBUG(Q_FUNC_INFO << ", label = " << STDSTRING(name()))
	Q_D(TextLabel);

	KConfigGroup group = config.group(QStringLiteral("Label"));
	// TODO: dark mode support?
	d->fontColor = group.readEntry(QStringLiteral("FontColor"), QColor(Qt::black)); // used when it's latex text
	d->backgroundColor = group.readEntry(QStringLiteral("BackgroundColor"), QColor(Qt::transparent)); // used when it's latex text
	if (d->textWrapper.mode == TextLabel::Mode::Text && !d->textWrapper.text.isEmpty()) {
		// To set the color in a html text, a QTextEdit must be used, QTextDocument is not enough
		QTextEdit te;
		te.setHtml(d->textWrapper.text);
		te.selectAll();
		te.setTextColor(d->fontColor);
		te.setTextBackgroundColor(d->backgroundColor); // for plain text no background color supported, due to bug https://bugreports.qt.io/browse/QTBUG-25420

		TextWrapper wrapper(te.toHtml(), TextLabel::Mode::Text, true);
		te.setHtml(d->textWrapper.textPlaceholder);
		te.selectAll();
		te.setTextColor(d->fontColor);
		te.setTextBackgroundColor(d->backgroundColor); // for plain text no background color supported, due to bug https://bugreports.qt.io/browse/QTBUG-25420
		wrapper.textPlaceholder = te.toHtml();
		wrapper.allowPlaceholder = d->textWrapper.allowPlaceholder;

		// update the text also in the widget to which it is connected
		setText(wrapper);
	} else if (d->textWrapper.mode == TextLabel::Mode::LaTeX) {
		// call updateText() to re-render the LaTeX-image with the new text colors
		d->updateText();
	}

	// otherwise when changing theme while the textlabel dock is visible, the
	// color comboboxes do not change the color
	backgroundColorChanged(d->backgroundColor);
	fontColorChanged(d->fontColor);

	group = config.group(QStringLiteral("CartesianPlot"));
	d->borderLine->loadThemeConfig(group);
}

void TextLabel::saveThemeConfig(const KConfig& config) {
	KConfigGroup group = config.group(QStringLiteral("Label"));