[evolution/zbrown/tnum-dates] ECellText/ECellDate: Use tabular numbers for date

[Zander Brown <zbrown src gnome org>]

commit ba4da82d013b4cd9c5d40821012b9f37d0c22b98
Author: Zander Brown <zbrown gnome org>
Date:   Wed Jul 29 16:37:19 2020 +0100

    ECellText/ECellDate: Use tabular numbers for date
    
    Add a "use-tabular-numbers" property to ECellText that ECellDate sets to
    true
    
    This enables the tnum=1 font feature making digits equal width

 src/e-util/e-cell-date.c |  1 +
 src/e-util/e-cell-text.c | 27 ++++++++++++++++++++++++++-
 src/e-util/e-cell-text.h |  1 +
 3 files changed, 28 insertions(+), 1 deletion(-)
---
diff --git a/src/e-util/e-cell-date.c b/src/e-util/e-cell-date.c
index 1ac86a9d42..be77a93bc1 100644
--- a/src/e-util/e-cell-date.c
+++ b/src/e-util/e-cell-date.c
@@ -77,6 +77,7 @@ e_cell_date_class_init (ECellDateClass *class)
 static void
 e_cell_date_init (ECellDate *ecd)
 {
+  g_object_set (ecd, "use-tabular-numbers", TRUE, NULL);
 }
 
 /**
diff --git a/src/e-util/e-cell-text.c b/src/e-util/e-cell-text.c
index 65adf2abb6..60fc32ed49 100644
--- a/src/e-util/e-cell-text.c
+++ b/src/e-util/e-cell-text.c
@@ -85,7 +85,8 @@ enum {
        PROP_ITALIC_COLUMN,
        PROP_STRIKEOUT_COLOR_COLUMN,
        PROP_EDITABLE,
-       PROP_BG_COLOR_COLUMN
+       PROP_BG_COLOR_COLUMN,
+       PROP_USE_TABULAR_NUMBERS,
 };
 
 enum {
@@ -471,6 +472,11 @@ build_attr_list (ECellTextView *text_view,
 
                pango_attr_list_insert_before (attrs, attr);
        }
+       if (ect->use_tabular_numbers) {
+               PangoAttribute *attr = pango_attr_font_features_new ("tnum=1");
+
+               pango_attr_list_insert_before (attrs, attr);
+       }
 
        return attrs;
 }
@@ -1602,6 +1608,10 @@ ect_set_property (GObject *object,
                text->bg_color_column = g_value_get_int (value);
                break;
 
+       case PROP_USE_TABULAR_NUMBERS:
+               text->use_tabular_numbers = g_value_get_boolean (value);
+               break;
+
        default:
                return;
        }
@@ -1651,6 +1661,10 @@ ect_get_property (GObject *object,
                g_value_set_int (value, text->bg_color_column);
                break;
 
+       case PROP_USE_TABULAR_NUMBERS:
+               g_value_set_boolean (value, text->use_tabular_numbers);
+               break;
+
        default:
                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
                break;
@@ -1802,6 +1816,16 @@ e_cell_text_class_init (ECellTextClass *class)
                        -1, G_MAXINT, -1,
                        G_PARAM_READWRITE));
 
+       g_object_class_install_property (
+               object_class,
+               PROP_USE_TABULAR_NUMBERS,
+               g_param_spec_boolean (
+                       "use-tabular-numbers",
+                       "Use tabular numbers",
+                       NULL,
+                       FALSE,
+                       G_PARAM_READWRITE));
+
        if (!clipboard_atom)
                clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE);
 
@@ -1975,6 +1999,7 @@ e_cell_text_init (ECellText *ect)
        ect->color_column = -1;
        ect->bg_color_column = -1;
        ect->editable = TRUE;
+       ect->use_tabular_numbers = FALSE;
 }
 
 /**
diff --git a/src/e-util/e-cell-text.h b/src/e-util/e-cell-text.h
index c486cde8ae..dd1baa2e38 100644
--- a/src/e-util/e-cell-text.h
+++ b/src/e-util/e-cell-text.h
@@ -85,6 +85,7 @@ struct _ECellText {
 
        guint use_ellipsis : 1;         /* Whether to use the ellipsis. */
        guint editable : 1;             /* Whether the text can be edited. */
+       guint use_tabular_numbers : 1;  /* Whether to use the tabular numbers. */
 
        gint strikeout_column;
        gint underline_column;