[LyX/master] Add method FontMetrics::italic()

[Jean-Marc Lasgouttes]

commit ae37caacdd1b4aee796dbed2b6f749a8fd82a298
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Mon Sep 14 16:26:19 2020 +0200

    Add method FontMetrics::italic()
    
    This can be useful for ticket #11428.
---
 src/frontends/FontMetrics.h         |    2 ++
 src/frontends/qt/GuiFontMetrics.cpp |    6 ++++++
 src/frontends/qt/GuiFontMetrics.h   |    1 +
 3 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/src/frontends/FontMetrics.h b/src/frontends/FontMetrics.h
index d1fae1c..0807a22 100644
--- a/src/frontends/FontMetrics.h
+++ b/src/frontends/FontMetrics.h
@@ -75,6 +75,8 @@ public:
 	/// return the distance from the base line to where the strike out line
 	/// should be drawn.
 	virtual int strikeoutPos() const = 0;
+	/// return true if font is not upright (italic or oblique)
+	virtual bool italic() const = 0;
 
 	/// return the width of the char in the font
 	virtual int width(char_type c) const = 0;
diff --git a/src/frontends/qt/GuiFontMetrics.cpp b/src/frontends/qt/GuiFontMetrics.cpp
index 4a09d97..ab8815d 100644
--- a/src/frontends/qt/GuiFontMetrics.cpp
+++ b/src/frontends/qt/GuiFontMetrics.cpp
@@ -161,6 +161,12 @@ int GuiFontMetrics::strikeoutPos() const
 }
 
 
+bool GuiFontMetrics::italic() const
+{
+	return font_.italic();
+}
+
+
 namespace {
 int const outOfLimitMetric = -10000;
 }
diff --git a/src/frontends/qt/GuiFontMetrics.h b/src/frontends/qt/GuiFontMetrics.h
index 4f0b307..d5847a1 100644
--- a/src/frontends/qt/GuiFontMetrics.h
+++ b/src/frontends/qt/GuiFontMetrics.h
@@ -42,6 +42,7 @@ public:
 	virtual int lineWidth() const;
 	virtual int underlinePos() const;
 	virtual int strikeoutPos() const;
+	virtual bool italic() const;
 	virtual int width(char_type c) const;
 	virtual int ascent(char_type c) const;
 	virtual int descent(char_type c) const;