X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Futil.hpp;h=49ae04b2dbc024814e61e88428dc896e8949e0b2;hb=b36ba61198551c5994c9b3210b07109ac0d87829;hp=e1640c4a374d8a9aed51231ae03a6b1c895486b1;hpb=66279897e318a2549557054d1204c862f7d99469;p=pulseview.git

diff --git a/pv/util.hpp b/pv/util.hpp
index e1640c4a..49ae04b2 100644
--- a/pv/util.hpp
+++ b/pv/util.hpp
@@ -17,8 +17,8 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PULSEVIEW_UTIL_HPP
-#define PULSEVIEW_UTIL_HPP
+#ifndef PULSEVIEW_PV_UTIL_HPP
+#define PULSEVIEW_PV_UTIL_HPP
 
 #include <cmath>
 #include <string>
@@ -30,6 +30,7 @@
 
 #include <QMetaType>
 #include <QString>
+#include <QFontMetrics>
 
 using std::string;
 using std::vector;
@@ -62,6 +63,11 @@ typedef boost::multiprecision::number<
 	boost::multiprecision::cpp_dec_float<24>,
 	boost::multiprecision::et_off> Timestamp;
 
+/**
+ * Chooses a prefix so that the value in front of the decimal point is between 1 and 999.
+ */
+SIPrefix determine_value_prefix(double v);
+
 /**
  * Formats a given timestamp with the specified SI prefix.
  *
@@ -138,9 +144,18 @@ QString format_time_minutes(const Timestamp& t, signed precision = 0,
 
 vector<string> split_string(string text, string separator);
 
+/**
+ * Return the width of a string in a given font.
+ * @param[in] metric metrics of the font
+ * @param[in] string the string whose width should be determined
+ *
+ * @return width of the string in pixels
+ */
+std::streamsize text_width(const QFontMetrics &metric, const QString &string);
+
 } // namespace util
 } // namespace pv
 
 Q_DECLARE_METATYPE(pv::util::Timestamp)
 
-#endif // PULSEVIEW_UTIL_HPP
+#endif // PULSEVIEW_PV_UTIL_HPP