[balsa/popover] balsa-message: Improve the GtkPopover popup

[Peter Bloomfield <peterb src gnome org>]

commit 47c461021f7b7340f8b93d5b9b858950094ef3a6
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Fri May 8 15:42:01 2020 -0400

    balsa-message: Improve the GtkPopover popup
    
    • Actually pop it up, by setting it relative to the tree-view, not the
      (hidden) mime-widget.
    • When it is popped up in response to a click, position it above the
      pointer.

 src/balsa-message.c | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)
---
diff --git a/src/balsa-message.c b/src/balsa-message.c
index 849f9fc5b..239174f3b 100644
--- a/src/balsa-message.c
+++ b/src/balsa-message.c
@@ -901,6 +901,17 @@ tree_mult_selection_popup(BalsaMessage * balsa_message, GdkEventButton * event,
     if (selected == 1) {
         BalsaPartInfo *info = BALSA_PART_INFO(balsa_message->save_all_list->data);
         if (info->popup_menu != NULL) {
+            if (event != NULL) {
+                GdkRectangle rectangle;
+
+                /* Pop up above the pointer */
+                rectangle.x = event->x;
+                rectangle.width = 0;
+                rectangle.y = event->y;
+                rectangle.height = 0;
+                gtk_popover_set_pointing_to(GTK_POPOVER(info->popup_menu), &rectangle);
+            }
+
             gtk_popover_popup(GTK_POPOVER(info->popup_menu));
         }
         g_list_free(balsa_message->save_all_list);
@@ -954,8 +965,6 @@ tree_button_press_cb(GtkWidget * widget, GdkEventButton * event,
     GtkTreeView *tree_view = GTK_TREE_VIEW(widget);
     GtkTreePath *path;
 
-    g_return_val_if_fail(balsa_message, FALSE);
-    g_return_val_if_fail(event, FALSE);
     if (!gdk_event_triggers_context_menu((GdkEvent *) event)
         || event->window != gtk_tree_view_get_bin_window(tree_view))
         return FALSE;
@@ -984,13 +993,24 @@ tree_button_press_cb(GtkWidget * widget, GdkEventButton * event,
                 gtk_tree_model_get(model, &iter, PART_INFO_COLUMN, &info, -1);
                 if (info != NULL) {
                     if (info->popup_menu != NULL) {
+                        GdkRectangle rectangle;
+
+                        /* Pop up above the pointer */
+                        rectangle.x = event->x;
+                        rectangle.width = 0;
+                        rectangle.y = event->y;
+                        rectangle.height = 0;
+                        gtk_popover_set_pointing_to(GTK_POPOVER(info->popup_menu),
+                                                    &rectangle);
+
                         gtk_popover_popup(GTK_POPOVER(info->popup_menu));
                     }
                     g_object_unref(info);
                 }
             }
-        } else
+        } else {
             tree_mult_selection_popup(balsa_message, event, selection);
+        }
         gtk_tree_path_free(path);
     }
 
@@ -1660,7 +1680,7 @@ part_create_menu(BalsaMessage *balsa_message, BalsaPartInfo *info)
     g_free(content_type);
 
     info->popup_menu =
-        gtk_popover_new_from_model(GTK_WIDGET(info->mime_widget), G_MENU_MODEL(menu));
+        gtk_popover_new_from_model(balsa_message->treeview, G_MENU_MODEL(menu));
 }
 
 static void