[gtk: 1/2] ModelButton: Add 'use-markup' property

[Matthias Clasen <matthiasc src gnome org>]

commit 0abd01e288a9f0ea5c98034f2b235f4ee7ba8463
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Mon Apr 23 11:06:17 2018 +0200

    ModelButton: Add 'use-markup' property
    
    Binds this property to the button's label, allowing a model button to
    have text with markup.
    
    This will be convenient for buttons like 'Online Accounts <sup>↗</sup>'.

 gtk/gtkmodelbutton.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
---
diff --git a/gtk/gtkmodelbutton.c b/gtk/gtkmodelbutton.c
index 467928a083..0b4fbf625d 100644
--- a/gtk/gtkmodelbutton.c
+++ b/gtk/gtkmodelbutton.c
@@ -171,6 +171,7 @@ enum
   PROP_ROLE,
   PROP_ICON,
   PROP_TEXT,
+  PROP_USE_MARKUP,
   PROP_ACTIVE,
   PROP_MENU_NAME,
   PROP_INVERTED,
@@ -389,6 +390,19 @@ gtk_model_button_set_text (GtkModelButton *button,
   g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_TEXT]);
 }
 
+static void
+gtk_model_button_set_use_markup (GtkModelButton *button,
+                                 gboolean        use_markup)
+{
+  use_markup = !!use_markup;
+  if (gtk_label_get_use_markup (GTK_LABEL (button->label)) == use_markup)
+    return;
+
+  gtk_label_set_use_markup (GTK_LABEL (button->label), use_markup);
+  update_visibility (button);
+  g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_USE_MARKUP]);
+}
+
 static void
 gtk_model_button_set_active (GtkModelButton *button,
                              gboolean        active)
@@ -507,6 +521,10 @@ gtk_model_button_get_property (GObject    *object,
       g_value_set_string (value, gtk_label_get_text (GTK_LABEL (button->label)));
       break;
 
+    case PROP_USE_MARKUP:
+      g_value_set_boolean (value, gtk_label_get_use_markup (GTK_LABEL (button->label)));
+      break;
+
     case PROP_ACTIVE:
       g_value_set_boolean (value, button->active);
       break;
@@ -555,6 +573,10 @@ gtk_model_button_set_property (GObject      *object,
       gtk_model_button_set_text (button, g_value_get_string (value));
       break;
 
+    case PROP_USE_MARKUP:
+      gtk_model_button_set_use_markup (button, g_value_get_boolean (value));
+      break;
+
     case PROP_ACTIVE:
       gtk_model_button_set_active (button, g_value_get_boolean (value));
       break;
@@ -956,6 +978,20 @@ gtk_model_button_class_init (GtkModelButtonClass *class)
                          "",
                          G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
 
+  /**
+   * GtkModelButton:use-markup:
+   *
+   * If %TRUE, XML tags in the text of the button are interpreted as by
+   * pango_parse_markup() to format the enclosed spans of text. If %FALSE, the
+   * text will be displayed verbatim.
+   */
+  properties[PROP_USE_MARKUP] =
+    g_param_spec_boolean ("use-markup",
+                          P_("Use markup"),
+                          P_("The text of the button includes XML markup. See pango_parse_markup()"),
+                          FALSE,
+                          G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
   /**
    * GtkModelButton:active:
    *