From 049cef17f75f20af74bc81c33010da34196e4199 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Mon, 2 May 2022 12:41:20 +0200
Subject: Set line height as computed by Pango.

---
 src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H   | 1 +
 src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H
index c38283d95..d5f7f560d 100644
--- a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H
+++ b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H
@@ -34,6 +34,7 @@ public:
   FL_EXPORT ~Fl_Cairo_Font_Descriptor();
   PangoFontDescription *fontref;
   int **width; // array of arrays of character widths
+  int line_height;
 };
 
 
diff --git a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
index d020b9a8f..06abacccb 100644
--- a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
+++ b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
@@ -917,7 +917,7 @@ void Fl_Cairo_Graphics_Driver::delete_bitmask(fl_uintptr_t bm) {
 
 int Fl_Cairo_Graphics_Driver::height() {
   if (!font_descriptor()) font(0, 12);
-  return (font_descriptor()->ascent + font_descriptor()->descent) * 1.25;
+  return ((Fl_Cairo_Font_Descriptor*)font_descriptor())->line_height;
 }
 
 
@@ -1063,6 +1063,7 @@ Fl_Cairo_Font_Descriptor::Fl_Cairo_Font_Descriptor(const char* name, Fl_Fontsize
   PangoFontMetrics *metrics = pango_fontset_get_metrics(fontset);
   ascent = pango_font_metrics_get_ascent(metrics)/PANGO_SCALE;
   descent = pango_font_metrics_get_descent(metrics)/PANGO_SCALE;
+  line_height = ceil(pango_font_metrics_get_height(metrics)/double(PANGO_SCALE));
   q_width = pango_font_metrics_get_approximate_char_width(metrics)/PANGO_SCALE;
   pango_font_metrics_unref(metrics);
   g_object_unref(fontset);
-- 
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