forked from AuroraMiddleware/gtk
testlistview: Create widgets only once
Previously, we were recreating all widgets every time the list item was rebound, which caused a lot of extra work every time we scrolled. Now we keep the widgets around and only set their properties again when the item changes.
This commit is contained in:
Benjamin Otte
Matthias Clasen
parent
7389e704dc
commit
d8eec549f0
@ -20,7 +20,8 @@ start_enumerate (GListStore *store)
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enumerate = g_file_enumerate_children (file,
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G_FILE_ATTRIBUTE_STANDARD_TYPE
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"," G_FILE_ATTRIBUTE_STANDARD_ICON
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"," G_FILE_ATTRIBUTE_STANDARD_NAME,
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"," G_FILE_ATTRIBUTE_STANDARD_NAME
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"," G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
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0,
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NULL,
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&error);
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@ -138,72 +139,116 @@ create_list_model_for_directory (gpointer file)
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return G_LIST_MODEL (sort);
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}
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typedef struct _RowData RowData;
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struct _RowData
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{
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GtkWidget *depth_box;
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GtkWidget *expander;
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GtkWidget *icon;
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GtkWidget *name;
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GtkTreeListRow *current_item;
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GBinding *expander_binding;
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};
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static void row_data_notify_item (GtkListItem *item,
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GParamSpec *pspec,
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RowData *data);
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static void
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bind_widget (GtkListItem *list_item,
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gpointer unused)
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row_data_unbind (RowData *data)
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{
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if (data->current_item == NULL)
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return;
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g_binding_unbind (data->expander_binding);
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g_clear_object (&data->current_item);
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}
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static void
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row_data_bind (RowData *data,
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GtkTreeListRow *item)
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{
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GFileInfo *info;
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GIcon *icon;
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guint depth;
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row_data_unbind (data);
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if (item == NULL)
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return;
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data->current_item = g_object_ref (item);
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depth = gtk_tree_list_row_get_depth (item);
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gtk_widget_set_size_request (data->depth_box, 16 * depth, 0);
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gtk_widget_set_sensitive (data->expander, gtk_tree_list_row_is_expandable (item));
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data->expander_binding = g_object_bind_property (item, "expanded", data->expander, "active", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
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info = gtk_tree_list_row_get_item (item);
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icon = g_file_info_get_icon (info);
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gtk_widget_set_visible (data->icon, icon != NULL);
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if (icon)
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gtk_image_set_from_gicon (GTK_IMAGE (data->icon), icon);
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gtk_label_set_label (GTK_LABEL (data->name), g_file_info_get_display_name (info));
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g_object_unref (info);
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}
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static void
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row_data_notify_item (GtkListItem *item,
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GParamSpec *pspec,
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RowData *data)
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{
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row_data_bind (data, gtk_list_item_get_item (item));
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}
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static void
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row_data_free (gpointer _data)
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{
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RowData *data = _data;
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row_data_unbind (data);
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g_slice_free (RowData, data);
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}
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static void
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setup_widget (GtkListItem *list_item,
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gpointer unused)
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{
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GtkWidget *box, *child;
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GFileInfo *info;
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GFile *file;
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guint depth;
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GIcon *icon;
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gpointer item;
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char *s;
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RowData *data;
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item = gtk_list_item_get_item (list_item);
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data = g_slice_new0 (RowData);
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g_signal_connect (list_item, "notify::item", G_CALLBACK (row_data_notify_item), data);
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g_object_set_data_full (G_OBJECT (list_item), "row-data", data, row_data_free);
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box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
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gtk_list_item_set_child (list_item, box);
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child = gtk_label_new (NULL);
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gtk_label_set_width_chars (GTK_LABEL (child), 5);
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gtk_label_set_xalign (GTK_LABEL (child), 1.0);
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g_object_bind_property (list_item, "position", child, "label", G_BINDING_SYNC_CREATE);
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gtk_box_append (GTK_BOX (box), child);
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depth = gtk_tree_list_row_get_depth (item);
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if (depth > 0)
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{
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child = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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gtk_widget_set_size_request (child, 16 * depth, 0);
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gtk_box_append (GTK_BOX (box), child);
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}
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data->depth_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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gtk_box_append (GTK_BOX (box), data->depth_box);
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data->expander = g_object_new (GTK_TYPE_TOGGLE_BUTTON, "css-name", "expander-widget", NULL);
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gtk_button_set_has_frame (GTK_BUTTON (data->expander), FALSE);
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gtk_box_append (GTK_BOX (box), data->expander);
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child = g_object_new (GTK_TYPE_SPINNER, "css-name", "expander", NULL);
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g_object_bind_property (data->expander, "active", child, "spinning", G_BINDING_SYNC_CREATE);
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gtk_button_set_child (GTK_BUTTON (data->expander), child);
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if (gtk_tree_list_row_is_expandable (item))
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{
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GtkWidget *arrow;
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data->icon = gtk_image_new ();
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gtk_box_append (GTK_BOX (box), data->icon);
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child = g_object_new (GTK_TYPE_TOGGLE_BUTTON, "css-name", "expander-widget", NULL);
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gtk_button_set_has_frame (GTK_BUTTON (child), FALSE);
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g_object_bind_property (item, "expanded", child, "active", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
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g_object_set_data_full (G_OBJECT (child), "make-sure-its-not-unreffed", g_object_ref (item), g_object_unref);
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arrow = g_object_new (GTK_TYPE_SPINNER, "css-name", "expander", NULL);
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g_object_bind_property (item, "expanded", arrow, "spinning", G_BINDING_SYNC_CREATE);
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gtk_button_set_child (GTK_BUTTON (child), arrow);
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}
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else
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{
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child = gtk_image_new (); /* empty whatever */
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}
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gtk_box_append (GTK_BOX (box), child);
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info = gtk_tree_list_row_get_item (item);
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icon = g_file_info_get_icon (info);
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if (icon)
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{
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child = gtk_image_new_from_gicon (icon);
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gtk_box_append (GTK_BOX (box), child);
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}
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file = g_object_get_data (G_OBJECT (info), "file");
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s = g_file_get_basename (file);
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child = gtk_label_new (s);
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g_free (s);
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g_object_unref (info);
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gtk_box_append (GTK_BOX (box), child);
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data->name = gtk_label_new (NULL);
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gtk_box_append (GTK_BOX (box), data->name);
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}
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static GListModel *
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@ -305,8 +350,8 @@ main (int argc, char *argv[])
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listview = gtk_list_view_new ();
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gtk_list_view_set_functions (GTK_LIST_VIEW (listview),
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setup_widget,
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NULL,
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bind_widget,
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NULL, NULL);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), listview);
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