client move ui helpers to folder

client/ui/hex_spinbox.cpp

@@ -0,0 +1,40 @@
+#include "hex_spinbox.hpp"
+
+HexSpinBox::HexSpinBox(QWidget *parent, bool showPrefix, const QString &format) : QSpinBox(parent), format(format)
+{
+    // Validates hex strings up to 8 chars with or w/out leading "0x" prefix.
+    // For arbitrary prefix/suffix, the regex could be built dynamically
+    //  in validate(), or override setPrefix()/setSuffix() methods.
+    const QRegularExpression rx("(?:0[xX])?[0-9A-Fa-f]{1,8}");
+    validator = new QRegularExpressionValidator(rx, this);
+    setShowPrefix(showPrefix);
+}
+
+void HexSpinBox::setShowPrefix(bool show)
+{
+    if (show)
+        setPrefix(QStringLiteral("0x"));
+    else
+        setPrefix(QString());
+}
+
+void HexSpinBox::setFormat(const QString &text)
+{
+    format = text;
+    this->lineEdit()->setText(textFromValue(value()));
+}
+
+QValidator::State HexSpinBox::validate(QString &text, int &pos) const
+{
+    return validator->validate(text, pos);
+}
+
+int HexSpinBox::valueFromText(const QString &text) const
+{
+    return text.toInt(0, 16);
+}
+
+QString HexSpinBox::textFromValue(int value) const
+{
+    return QString().asprintf(qPrintable(format), value);
+}