[gtk+] testcombo: Test grid :row- and :column-span-column

[Daniel Boles <dboles src gnome org>]

commit 06941c593de51c77270dfacb2a38ef8cf408a11c
Author: Daniel Boles <dboles src gnome org>
Date:   Wed Oct 4 10:45:49 2017 +0100

    testcombo: Test grid :row- and :column-span-column
    
    Ditch two items that were white and so weren’t visible on our standard
    theme anyway, and use the new space to test extra grid-mode properties.
    
    Note that if we do this then, as before, we set the ListStore on the
    ComboBox before appending to it, that produced runtime warnings like:
    
    Gtk-CRITICAL **: gtk_menu_attach: assertion 'left_attach < right_attach' failed
    
    I didn’t look into that yet, but it may indicate that attaching items
    vs. recognising their spans don’t occur in the correct order. For the
    purposes of testing this, I just create the CB after filling its model.

 tests/testcombo.c |   50 +++++++++++++++++++++++++++-----------------------
 1 files changed, 27 insertions(+), 23 deletions(-)
---
diff --git a/tests/testcombo.c b/tests/testcombo.c
index 9103f9c..a56c3b9 100644
--- a/tests/testcombo.c
+++ b/tests/testcombo.c
@@ -65,21 +65,15 @@ create_combo_box_grid_demo (void)
         GtkCellRenderer *cell = gtk_cell_renderer_pixbuf_new ();
         GtkListStore *store;
 
-        store = gtk_list_store_new (1, GDK_TYPE_PIXBUF);
-
-        combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));
-        gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo),
-                                    cell, TRUE);
-        gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo),
-                                        cell, "pixbuf", 0, NULL);
-        gtk_combo_box_set_wrap_width (GTK_COMBO_BOX (combo),
-                                      3);
+        store = gtk_list_store_new (3, GDK_TYPE_PIXBUF, G_TYPE_INT, G_TYPE_INT);
 
         /* first row */
         pixbuf = create_color_pixbuf ("red");
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
+                            1, 1, /* row span */
+                            2, 1, /* column span */
                             -1);
         g_object_unref (pixbuf);
 
@@ -87,6 +81,8 @@ create_combo_box_grid_demo (void)
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
+                            1, 1,
+                            2, 1,
                             -1);
         g_object_unref (pixbuf);
 
@@ -94,6 +90,8 @@ create_combo_box_grid_demo (void)
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
+                            1, 1,
+                            2, 1,
                             -1);
         g_object_unref (pixbuf);
 
@@ -102,6 +100,8 @@ create_combo_box_grid_demo (void)
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
+                            1, 1,
+                            2, 2, /* Span 2 columns */
                             -1);
         g_object_unref (pixbuf);
 
@@ -109,13 +109,8 @@ create_combo_box_grid_demo (void)
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
-                            -1);
-        g_object_unref (pixbuf);
-
-        pixbuf = create_color_pixbuf ("white");
-        gtk_list_store_append (store, &iter);
-        gtk_list_store_set (store, &iter,
-                            0, pixbuf,
+                            1, 2, /* Span 2 rows */
+                            2, 1,
                             -1);
         g_object_unref (pixbuf);
 
@@ -124,13 +119,8 @@ create_combo_box_grid_demo (void)
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
-                            -1);
-        g_object_unref (pixbuf);
-
-        pixbuf = create_color_pixbuf ("snow");
-        gtk_list_store_append (store, &iter);
-        gtk_list_store_set (store, &iter,
-                            0, pixbuf,
+                            1, 1,
+                            2, 1,
                             -1);
         g_object_unref (pixbuf);
 
@@ -138,11 +128,25 @@ create_combo_box_grid_demo (void)
         gtk_list_store_append (store, &iter);
         gtk_list_store_set (store, &iter,
                             0, pixbuf,
+                            1, 1,
+                            2, 1,
                             -1);
         g_object_unref (pixbuf);
 
+        /* Create ComboBox after model to avoid gtk_menu_attach() warnings(?) */
+        combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));
         g_object_unref (store);
 
+        gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo),
+                                    cell, TRUE);
+        gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo),
+                                        cell, "pixbuf", 0, NULL);
+
+        /* Set wrap-width != 0 to enforce grid mode */
+        gtk_combo_box_set_wrap_width (GTK_COMBO_BOX (combo), 3);
+        gtk_combo_box_set_row_span_column (GTK_COMBO_BOX (combo), 1);
+        gtk_combo_box_set_column_span_column (GTK_COMBO_BOX (combo), 2);
+
         gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
 
         return combo;