Gfx::Legend percent unit fixed

Author: simzer

src/base/gfx/length.cpp

@@ -10,7 +10,7 @@ Length::Length(const std::string &s)
 	auto unit = parser.getUnit();
 	if (unit == "%")
 	{
-		relative = parser.getValue();
+		relative = parser.getValue() / 100.0;
 	}
 	else if (unit == "px" || unit.empty())
 	{

src/base/gfx/length.h

@@ -2,6 +2,7 @@
 #define GFX_LENGTH
 
 #include <string>
+#include <stdexcept>
 
 #include "base/text/valueunit.h"
 
@@ -19,16 +20,24 @@ class Length
 	static Length Absolute(double value) { return Length(value, 0); }
 	static Length Relative(double value) { return Length(0, value); }
 
-	Length(double abs, double rel) : 
+	Length(double abs, double rel = 0.0) : 
 		absolute(abs), relative(rel)
 	{}
 
 	explicit Length(const std::string &s);
 
+	bool isAbsolute() const { return relative == 0.0; }
+	bool isRelative() const { return absolute == 0.0; }
+
 	double get(double reference) const {
 		return absolute + relative * reference;
 	}
 
+	double get() const {
+		if (isAbsolute()) return absolute;
+		throw std::logic_error("internal error: relative length wo. reference");
+	}
+
 	explicit operator std::string() const;
 
 	bool operator==(const Length &other) const {