css: Translate line-height to a Pango

Pango 1.50 introduces a line-height attribute. Use it.
This is enough to make line-height work for labels
and entries.

1 files changed, 15 insertions, 0 deletions

diff --git a/gtk/gtkcssstyle.c b/gtk/gtkcssstyle.c
index 54aa0e7d23..01e7467a10 100644
--- a/gtk/gtkcssstyle.c
+++ b/gtk/gtkcssstyle.c
@@ -33,6 +33,7 @@
 #include "gtkcssstringvalueprivate.h"
 #include "gtkcssfontvariationsvalueprivate.h"
 #include "gtkcssfontfeaturesvalueprivate.h"
+#include "gtkcsslineheightvalueprivate.h"
 #include "gtkcssstylepropertyprivate.h"
 #include "gtkcsstransitionprivate.h"
 #include "gtkstyleanimationprivate.h"
@@ -485,6 +486,20 @@ gtk_css_style_get_pango_attributes (GtkCssStyle *style)
       attrs = add_pango_attr (attrs, pango_attr_letter_spacing_new (letter_spacing * PANGO_SCALE));
     }
 
+#if PANGO_VERSION_CHECK(1, 49, 0)
+  /* line-height */
+  {
+    double height = gtk_css_line_height_value_get (style->font->line_height);
+    if (height != 0.0)
+      {
+        if (gtk_css_number_value_get_dimension (style->font->line_height) == GTK_CSS_DIMENSION_LENGTH)
+          attrs = add_pango_attr (attrs, pango_attr_line_height_new_absolute (height * PANGO_SCALE));
+        else
+          attrs = add_pango_attr (attrs, pango_attr_line_height_new (height));
+      }
+   }
+#endif
+
   /* OpenType features */
 
   s = NULL;