preparations for multiple unit (uBTC, mBTC, BTC) support, fix amount entry issue

src/qt/bitcoinunits.h

@@ -0,0 +1,34 @@
+#ifndef BITCOINUNITS_H
+#define BITCOINUNITS_H
+
+#include <QString>
+
+// Bitcoin unit definitions
+class BitcoinUnits
+{
+public:
+    enum Unit
+    {
+        BTC,
+        mBTC,
+        uBTC
+    };
+
+    // Short name
+    static QString name(Unit unit);
+    // Longer description
+    static QString description(Unit unit);
+    // Number of satoshis / unit
+    static qint64 factor(Unit unit);
+    // Number of decimals left
+    static int decimals(Unit unit);
+    // Format as string
+    static QString format(Unit unit, qint64 amount, bool plussign=false);
+    // Format as string (with unit)
+    static QString formatWithUnit(Unit unit, qint64 amount, bool plussign=false);
+    // Parse string to coin amount
+    static bool parse(Unit unit, const QString &value, qint64 *val_out);
+
+};
+
+#endif // BITCOINUNITS_H