From e1942a8bb9578b7c99ecea3231c23e1a3a9d94de Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 7 Jun 2015 01:12:18 -0400
Subject: [PATCH] widget-factory: Demonstrate custom context menu items

Add bold/italics/underline styling to the context menu of
the 'Lorem ipsum...' text view in page 1. The point is not
to show good UI for this kind of styling, but to demonstrate
custom actions in the context menu / touch selection.
---
 demos/widget-factory/widget-factory.c  | 91 ++++++++++++++++++++++++++
 demos/widget-factory/widget-factory.ui | 22 +++++++
 2 files changed, 113 insertions(+)

diff --git a/demos/widget-factory/widget-factory.c b/demos/widget-factory/widget-factory.c
index 979b7f78e5..10815ea81f 100644
--- a/demos/widget-factory/widget-factory.c
+++ b/demos/widget-factory/widget-factory.c
@@ -1124,6 +1124,93 @@ page_combo_separator_func (GtkTreeModel *model,
   return res;
 }
 
+static void
+activate_item (GtkWidget *item, GtkTextView *tv)
+{
+  const gchar *tag;
+  GtkTextIter start, end;
+  gboolean active;
+
+  g_object_get (item, "active", &active, NULL);
+  tag = (const gchar *)g_object_get_data (G_OBJECT (item), "tag");
+  gtk_text_buffer_get_selection_bounds (gtk_text_view_get_buffer (tv), &start, &end);
+  if (active)
+    gtk_text_buffer_apply_tag_by_name (gtk_text_view_get_buffer (tv), tag, &start, &end);
+  else
+    gtk_text_buffer_remove_tag_by_name (gtk_text_view_get_buffer (tv), tag, &start, &end);
+}
+
+static void
+add_item (GtkTextView *tv,
+          GtkWidget   *popup,
+          const gchar *label,
+          const gchar *tag,
+          gboolean     set)
+{
+  GtkWidget *item;
+
+  if (GTK_IS_MENU (popup))
+    {
+      item = gtk_check_menu_item_new_with_label (label);
+      gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (item), set);
+      g_signal_connect (item, "toggled", G_CALLBACK (activate_item), tv);
+    }
+  else
+    {
+      item = gtk_check_button_new_with_label (label);
+      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (item), set);
+      g_signal_connect (item, "clicked", G_CALLBACK (activate_item), tv);
+    }
+
+  g_object_set_data (G_OBJECT (item), "tag", (gpointer)tag);
+  gtk_widget_show (item);
+  gtk_container_add (GTK_CONTAINER (popup), item);
+}
+
+static void
+populate_popup (GtkTextView *tv,
+                GtkWidget   *popup)
+{
+  gboolean has_selection;
+  GtkWidget *item;
+  GtkTextIter start, end, iter;
+  GtkTextTagTable *tags;
+  GtkTextTag *bold, *italic, *underline;
+  gboolean all_bold, all_italic, all_underline;
+
+  has_selection = gtk_text_buffer_get_selection_bounds (gtk_text_view_get_buffer (tv), &start, &end);
+
+  if (!has_selection)
+    return;
+
+  tags = gtk_text_buffer_get_tag_table (gtk_text_view_get_buffer (tv));
+  bold = gtk_text_tag_table_lookup (tags, "bold");
+  italic = gtk_text_tag_table_lookup (tags, "italic");
+  underline = gtk_text_tag_table_lookup (tags, "underline");
+  all_bold = TRUE;
+  all_italic = TRUE;
+  all_underline = TRUE;
+  gtk_text_iter_assign (&iter, &start);
+  while (!gtk_text_iter_equal (&iter, &end))
+    {
+      all_bold &= gtk_text_iter_has_tag (&iter, bold);
+      all_italic &= gtk_text_iter_has_tag (&iter, italic);
+      all_underline &= gtk_text_iter_has_tag (&iter, underline);
+      gtk_text_iter_forward_char (&iter);
+    }
+
+  if (GTK_IS_MENU (popup))
+    {
+      item = gtk_separator_menu_item_new ();
+      gtk_widget_show (item);
+      gtk_container_add (GTK_CONTAINER (popup), item);
+    }
+
+  add_item (tv, popup, "Bold", "bold", all_bold);
+  add_item (tv, popup, "Italics", "italic", all_italic);
+  add_item (tv, popup, "Underline", "underline", all_underline);
+}
+
 static void
 activate (GApplication *app)
 {
@@ -1327,6 +1414,10 @@ activate (GApplication *app)
   widget2 = (GtkWidget *)gtk_builder_get_object (builder, "totem_like_osd");
   g_object_set_data (G_OBJECT (widget), "osd", widget2);
 
+  widget = (GtkWidget *)gtk_builder_get_object (builder, "textview1");
+  g_signal_connect (widget, "populate-popup",
+                    G_CALLBACK (populate_popup), NULL);
+
   gtk_widget_show_all (GTK_WIDGET (window));
 
   g_object_unref (builder);
diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index c7a7148446..8c0e3fd0ae 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -162,7 +162,28 @@
       </row>
     </data>
   </object>
+  <object class="GtkTextTagTable" id="tags">
+    <child type="tag">
+      <object class="GtkTextTag">
+        <property name="name">bold</property>
+        <property name="weight">800</property>
+      </object>
+    </child>
+    <child type="tag">
+      <object class="GtkTextTag">
+        <property name="name">italic</property>
+        <property name="style">italic</property>
+      </object>
+    </child>
+    <child type="tag">
+      <object class="GtkTextTag">
+        <property name="name">underline</property>
+        <property name="underline">single</property>
+      </object>
+    </child>
+  </object>
   <object class="GtkTextBuffer" id="textbuffer1">
+    <property name="tag-table">tags</property>
     <property name="text">Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 Nullam fringilla, est ut feugiat ultrices, elit lacus ultricies nibh, id commodo tortor nisi id elit.
 Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos.
@@ -1408,6 +1429,7 @@ Suspendisse feugiat quam quis dolor accumsan cursus.</property>
                                 <property name="wrap_mode">2</property>
                                 <property name="left_margin">10</property>
                                 <property name="right_margin">10</property>
+                                <property name="populate_all">True</property>
                               </object>
                             </child>
                           </object>