Add three general-purpose fields to DriverView

TouchGFX/gui/src/containers/DriverViewField.cpp

@@ -0,0 +1,35 @@
+#include "touchgfx/Unicode.hpp"
+#include <gui/containers/DriverViewField.hpp>
+
+DriverViewField::DriverViewField()
+    : intDigits{0}, decimalDigits{0}, fieldValue{0} {}
+
+void DriverViewField::initialize() { DriverViewFieldBase::initialize(); }
+
+void DriverViewField::setName(const touchgfx::TypedText &text) {
+  title.setTypedText(text);
+  title.invalidate();
+}
+
+void DriverViewField::setValue(float newValue) {
+  fieldValue = newValue;
+  updateValueBuffer();
+}
+
+void DriverViewField::setPrecision(size_t intDigits, size_t decimalDigits) {
+  this->intDigits = intDigits;
+  this->decimalDigits = decimalDigits;
+  updateValueBuffer();
+}
+
+void DriverViewField::updateValueBuffer() {
+  size_t width = intDigits;
+  if (decimalDigits != 0) {
+    width += decimalDigits + 1; // 1 digit for the decimal point
+  }
+  float params[3] = {(float)width, (float)decimalDigits, fieldValue};
+  Unicode::snprintfFloats(valueBuffer,
+                          sizeof(valueBuffer) / sizeof(Unicode::UnicodeChar),
+                          "%*.*f", params);
+  value.setWildcard(valueBuffer);
+}