[gtk/matthiasc/for-master] Initial support for new Pango attributes

[Matthias Clasen <matthiasc src gnome org>]

commit ad3dad1965b4aec226614a76a69cf52e3d60be76
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 1 10:32:45 2021 -0400

    Initial support for new Pango attributes
    
    This is still missing the GtkTextTag hookup,
    but it fixes the build.

 demos/gtk-demo/fontify.c |  8 ++++++++
 gtk/gtkpango.c           | 15 +++++++++++++++
 gtk/gtktextbuffer.c      |  8 ++++++++
 3 files changed, 31 insertions(+)
---
diff --git a/demos/gtk-demo/fontify.c b/demos/gtk-demo/fontify.c
index 34b5063b46..cdbdf654d3 100644
--- a/demos/gtk-demo/fontify.c
+++ b/demos/gtk-demo/fontify.c
@@ -283,6 +283,14 @@ insert_tags_for_attributes (GtkTextBuffer     *buffer,
           VOID_ATTR (sentence);
           break;
 
+        case PANGO_ATTR_BASELINE_SHIFT:
+          INT_ATTR (baseline_shift);
+          break;
+
+        case PANGO_ATTR_FONT_SCALE:
+          INT_ATTR (font_scale);
+          break;
+
         case PANGO_ATTR_SHAPE:
         case PANGO_ATTR_ABSOLUTE_SIZE:
         case PANGO_ATTR_GRAVITY:
diff --git a/gtk/gtkpango.c b/gtk/gtkpango.c
index 94207eb5cc..58ee7a3bf2 100644
--- a/gtk/gtkpango.c
+++ b/gtk/gtkpango.c
@@ -267,6 +267,21 @@ attribute_from_text (GtkBuilder  *builder,
     case PANGO_ATTR_SENTENCE:
       attribute = pango_attr_sentence_new ();
       break;
+    case PANGO_ATTR_BASELINE_SHIFT:
+      if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_BASELINE_SHIFT, value, &val, NULL))
+        attribute = pango_attr_baseline_shift_new (g_value_get_enum (&val));
+      else if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, NULL))
+        attribute = pango_attr_baseline_shift_new (g_value_get_enum (&val));
+      else
+        g_set_error (error,
+                     GTK_BUILDER_ERROR,
+                     GTK_BUILDER_ERROR_INVALID_VALUE,
+                     "Could not parse '%s' as baseline shift value", value);
+      break;
+    case PANGO_ATTR_FONT_SCALE:
+      if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_FONT_SCALE, value, &val, error))
+        attribute = pango_attr_font_scale_new (g_value_get_enum (&val));
+      break;
     case PANGO_ATTR_INVALID:
     default:
       break;
diff --git a/gtk/gtktextbuffer.c b/gtk/gtktextbuffer.c
index 67d1e47056..4ec5fe6077 100644
--- a/gtk/gtktextbuffer.c
+++ b/gtk/gtktextbuffer.c
@@ -4736,6 +4736,14 @@ insert_tags_for_attributes (GtkTextBuffer     *buffer,
           VOID_ATTR (sentence);
           break;
 
+        case PANGO_ATTR_BASELINE_SHIFT:
+          INT_ATTR (baseline_shift);
+          break;
+
+        case PANGO_ATTR_FONT_SCALE:
+          INT_ATTR (font_scale);
+          break;
+
         case PANGO_ATTR_SHAPE:
         case PANGO_ATTR_ABSOLUTE_SIZE:
         case PANGO_ATTR_GRAVITY: