[glade] GladeGtkLabel: fix color attributes handling

[Juan Pablo Ugarte <jpu src gnome org>]

commit f553b839bd7b994b0168dba0313b38b00cb190bf
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Fri Sep 25 19:19:00 2020 -0300

    GladeGtkLabel: fix color attributes handling
    
    Properly load/save pango color attributes
    
    Fix issue #474 "GtkLabel: setup text attribute issues"

 plugins/gtk+/glade-attributes.c | 33 +++++++++++++++++----------------
 plugins/gtk+/glade-gtk-label.c  |  2 +-
 2 files changed, 18 insertions(+), 17 deletions(-)
---
diff --git a/plugins/gtk+/glade-attributes.c b/plugins/gtk+/glade-attributes.c
index a3b560ce..1f57510d 100644
--- a/plugins/gtk+/glade-attributes.c
+++ b/plugins/gtk+/glade-attributes.c
@@ -707,7 +707,8 @@ value_icon_activate (GtkCellRendererToggle *cell_renderer,
   GtkTreeIter iter;
   PangoAttrType type;
   AttrEditType edit_type;
-  GdkRGBA color = {0,};
+  PangoColor color;
+  GdkRGBA rgba;
   gchar *text = NULL, *new_text;
 
   /* Find type etc */
@@ -726,25 +727,25 @@ value_icon_activate (GtkCellRendererToggle *cell_renderer,
         dialog = gtk_color_chooser_dialog_new (_("Select a color"),
                                                GTK_WINDOW (glade_app_get_window ()));
         /* Get response etc... */
-        if (text && gdk_rgba_parse (&color, text))
-          gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (dialog), &color);
+        if (text && pango_color_parse (&color, text))
+          {
+            rgba.red   = color.red   / 65535.0;
+            rgba.green = color.green / 65535.0;
+            rgba.blue  = color.blue  / 65535.0;
+            rgba.alpha = 1.0;
+            gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (dialog), &rgba);
+          }
 
         if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK)
           {
-            gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog), &color);
+            gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog), &rgba);
+
+            color.red   = (gint16) (rgba.red * 65535);
+            color.green = (gint16) (rgba.green * 65535);
+            color.blue  = (gint16) (rgba.blue * 65535);
+
             /* Use PangoColor string format */
-            if (((guint8)(color.red * 0xFF)) * 0x101 == (guint16)(color.red * 0xFFFF) &&
-                ((guint8)(color.green * 0xFF)) * 0x101 == (guint16)(color.green * 0xFFFF) &&
-                ((guint8)(color.blue * 0xFF)) * 0x101 == (guint16)(color.blue * 0xFFFF))
-              new_text = g_strdup_printf ("#%02X%02X%02X",
-                                          (guint8)(color.red * 0xFF),
-                                          (guint8)(color.green * 0xFF),
-                                          (guint8)(color.blue * 0xFF));
-            else
-              new_text = g_strdup_printf ("#%04X%04X%04X",
-                                          (guint16)(color.red * 0xFFFF),
-                                          (guint16)(color.green * 0xFFFF),
-                                          (guint16)(color.blue * 0xFFFF));
+            new_text = pango_color_to_string (&color);
 
             gtk_list_store_set (GTK_LIST_STORE (eprop_attrs->model), &iter,
                                 COLUMN_TEXT, new_text,
diff --git a/plugins/gtk+/glade-gtk-label.c b/plugins/gtk+/glade-gtk-label.c
index 9b127592..58d20df9 100644
--- a/plugins/gtk+/glade-gtk-label.c
+++ b/plugins/gtk+/glade-gtk-label.c
@@ -68,7 +68,7 @@ glade_gtk_label_set_attributes (GObject *object, const GValue *value)
   PangoLanguage *language;
   PangoFontDescription *font_desc;
   PangoAttrList *attrs = NULL;
-  GdkColor *color;
+  PangoColor *color;
   GList *list;
 
   for (list = g_value_get_boxed (value); list; list = list->next)