[gtk+/combo-refactor: 15/59] Connected to GtkTreeModel signals in GtkTreeMenu
- From: Tristan Van Berkom <tvb src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/combo-refactor: 15/59] Connected to GtkTreeModel signals in GtkTreeMenu
- Date: Tue, 4 Jan 2011 15:09:45 +0000 (UTC)
commit 438b0f7c9bba215085ac473ee2552bd7f720a49d
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date: Mon Nov 22 15:53:19 2010 +0900
Connected to GtkTreeModel signals in GtkTreeMenu
Now the GtkTreeMenu properly updates its hierarchy when the underlying
model data changes (row inserted/deleted or reordered). Also some unneeded
hackery was removed, all size calculations are delegated to the cellviews.
gtk/gtktreemenu.c | 465 ++++++++++++++++++++++++++++++++---------------------
1 files changed, 280 insertions(+), 185 deletions(-)
---
diff --git a/gtk/gtktreemenu.c b/gtk/gtktreemenu.c
index d6586b2..6974912 100644
--- a/gtk/gtktreemenu.c
+++ b/gtk/gtktreemenu.c
@@ -87,17 +87,21 @@ static GtkCellArea *gtk_tree_menu_cell_layout_get_area (GtkCellLayout
/* TreeModel/DrawingArea callbacks and building menus/submenus */
-static void gtk_tree_menu_populate (GtkTreeMenu *menu);
+static void gtk_tree_menu_populate (GtkTreeMenu *menu);
static GtkWidget *gtk_tree_menu_create_item (GtkTreeMenu *menu,
- GtkTreeIter *iter);
-static void gtk_tree_menu_set_area (GtkTreeMenu *menu,
+ GtkTreeIter *iter,
+ gboolean header_item);
+static void gtk_tree_menu_set_area (GtkTreeMenu *menu,
GtkCellArea *area);
-static void context_size_changed_cb (GtkCellAreaContext *context,
+static GtkWidget *gtk_tree_menu_get_path_item (GtkTreeMenu *menu,
+ GtkTreePath *path);
+
+static void context_size_changed_cb (GtkCellAreaContext *context,
GParamSpec *pspec,
GtkWidget *menu);
-static void item_activated_cb (GtkMenuItem *item,
+static void item_activated_cb (GtkMenuItem *item,
GtkTreeMenu *menu);
-static void submenu_activated_cb (GtkTreeMenu *submenu,
+static void submenu_activated_cb (GtkTreeMenu *submenu,
const gchar *path,
GtkTreeMenu *menu);
@@ -110,12 +114,12 @@ struct _GtkTreeMenuPrivate
/* CellArea and context for this menu */
GtkCellArea *area;
GtkCellAreaContext *context;
-
- gint last_alloc_width;
- gint last_alloc_height;
/* Signals */
gulong size_changed_id;
+ gulong row_inserted_id;
+ gulong row_deleted_id;
+ gulong row_reordered_id;
/* Row separators */
GtkTreeViewRowSeparatorFunc row_separator_func;
@@ -126,6 +130,8 @@ struct _GtkTreeMenuPrivate
GtkTreeMenuHeaderFunc header_func;
gpointer header_data;
GDestroyNotify header_destroy;
+
+ guint32 menu_with_header : 1;
};
enum {
@@ -140,7 +146,8 @@ enum {
N_SIGNALS
};
-static guint tree_menu_signals[N_SIGNALS] = { 0 };
+static guint tree_menu_signals[N_SIGNALS] = { 0 };
+static GQuark tree_menu_path_quark = 0;
G_DEFINE_TYPE_WITH_CODE (GtkTreeMenu, gtk_tree_menu, GTK_TYPE_MENU,
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
@@ -165,6 +172,8 @@ gtk_tree_menu_class_init (GtkTreeMenuClass *class)
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+ tree_menu_path_quark = g_quark_from_static_string ("gtk-tree-menu-path");
+
object_class->constructor = gtk_tree_menu_constructor;
object_class->dispose = gtk_tree_menu_dispose;
object_class->finalize = gtk_tree_menu_finalize;
@@ -392,63 +401,22 @@ gtk_tree_menu_get_preferred_width (GtkWidget *widget,
{
GtkTreeMenu *menu = GTK_TREE_MENU (widget);
GtkTreeMenuPrivate *priv = menu->priv;
- GtkTreePath *path = NULL;
- GtkTreeIter iter;
- gboolean valid = FALSE;
-
- g_signal_handler_block (priv->context, priv->size_changed_id);
- /* Before chaining up to the parent class and requesting the
- * menu item/cell view sizes, we need to request the size of
- * each row for this menu and make sure all the cellviews
- * request enough space
+ /* We leave the requesting work up to the cellviews which operate in the same
+ * context, reserving space for the submenu indicator if any of the items have
+ * submenus ensures that every cellview will receive the same allocated width.
+ *
+ * Since GtkMenu does hieght-for-width correctly, we know that the width of
+ * every cell will be requested before the height-for-widths are requested.
*/
- gtk_cell_area_context_flush_preferred_width (priv->context);
+ g_signal_handler_block (priv->context, priv->size_changed_id);
sync_reserve_submenu_size (menu);
+ gtk_cell_area_context_flush_preferred_width (priv->context);
- if (priv->model)
- {
- if (priv->root)
- path = gtk_tree_row_reference_get_path (priv->root);
-
- if (path)
- {
- GtkTreeIter parent;
-
- if (gtk_tree_model_get_iter (priv->model, &parent, path))
- valid = gtk_tree_model_iter_children (priv->model, &iter, &parent);
-
- gtk_tree_path_free (path);
- }
- else
- valid = gtk_tree_model_iter_children (priv->model, &iter, NULL);
-
- while (valid)
- {
- gboolean is_separator = FALSE;
-
- if (priv->row_separator_func)
- is_separator =
- priv->row_separator_func (priv->model, &iter, priv->row_separator_data);
-
- if (!is_separator)
- {
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- gtk_cell_area_get_preferred_width (priv->area, priv->context, widget, NULL, NULL);
- }
-
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
- }
-
- gtk_cell_area_context_sum_preferred_width (priv->context);
+ GTK_WIDGET_CLASS (gtk_tree_menu_parent_class)->get_preferred_width (widget, minimum_size, natural_size);
g_signal_handler_unblock (priv->context, priv->size_changed_id);
-
- /* Now that we've requested all the row's and updated priv->context properly, we can go ahead
- * and calculate the sizes by requesting the menu items and thier cell views */
- GTK_WIDGET_CLASS (gtk_tree_menu_parent_class)->get_preferred_width (widget, minimum_size, natural_size);
}
static void
@@ -458,63 +426,15 @@ gtk_tree_menu_get_preferred_height (GtkWidget *widget,
{
GtkTreeMenu *menu = GTK_TREE_MENU (widget);
GtkTreeMenuPrivate *priv = menu->priv;
- GtkTreePath *path = NULL;
- GtkTreeIter iter;
- gboolean valid = FALSE;
g_signal_handler_block (priv->context, priv->size_changed_id);
- /* Before chaining up to the parent class and requesting the
- * menu item/cell view sizes, we need to request the size of
- * each row for this menu and make sure all the cellviews
- * request enough space
- */
- gtk_cell_area_context_flush_preferred_height (priv->context);
-
sync_reserve_submenu_size (menu);
+ gtk_cell_area_context_flush_preferred_height (priv->context);
- if (priv->model)
- {
- if (priv->root)
- path = gtk_tree_row_reference_get_path (priv->root);
-
- if (path)
- {
- GtkTreeIter parent;
-
- if (gtk_tree_model_get_iter (priv->model, &parent, path))
- valid = gtk_tree_model_iter_children (priv->model, &iter, &parent);
-
- gtk_tree_path_free (path);
- }
- else
- valid = gtk_tree_model_iter_children (priv->model, &iter, NULL);
-
- while (valid)
- {
- gboolean is_separator = FALSE;
-
- if (priv->row_separator_func)
- is_separator =
- priv->row_separator_func (priv->model, &iter, priv->row_separator_data);
-
- if (!is_separator)
- {
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- gtk_cell_area_get_preferred_height (priv->area, priv->context, widget, NULL, NULL);
- }
-
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
- }
-
- gtk_cell_area_context_sum_preferred_height (priv->context);
+ GTK_WIDGET_CLASS (gtk_tree_menu_parent_class)->get_preferred_height (widget, minimum_size, natural_size);
g_signal_handler_unblock (priv->context, priv->size_changed_id);
-
- /* Now that we've requested all the row's and updated priv->context properly, we can go ahead
- * and calculate the sizes by requesting the menu items and thier cell views */
- GTK_WIDGET_CLASS (gtk_tree_menu_parent_class)->get_preferred_height (widget, minimum_size, natural_size);
}
static void
@@ -523,29 +443,14 @@ gtk_tree_menu_size_allocate (GtkWidget *widget,
{
GtkTreeMenu *menu = GTK_TREE_MENU (widget);
GtkTreeMenuPrivate *priv = menu->priv;
- gint new_width, new_height;
/* flush the context allocation */
gtk_cell_area_context_flush_allocation (priv->context);
/* Leave it to the first cell area to allocate the size of priv->context, since
- * we configure the menu to allocate all children the same width this should work fine */
+ * we configure the menu to allocate all children the same width this works fine
+ */
GTK_WIDGET_CLASS (gtk_tree_menu_parent_class)->size_allocate (widget, allocation);
-
- /* In alot of cases the menu gets allocated while the children dont need
- * any reallocation, in this case we need to restore the context allocation */
- gtk_cell_area_context_get_allocation (priv->context, &new_width, &new_height);
-
- if (new_width <= 0 && new_height <= 0)
- {
- gtk_cell_area_context_allocate_width (priv->context, priv->last_alloc_width);
- gtk_cell_area_context_allocate_height (priv->context, priv->last_alloc_height);
- }
-
- /* Save the allocation for the next round */
- gtk_cell_area_context_get_allocation (priv->context,
- &priv->last_alloc_width,
- &priv->last_alloc_height);
}
/****************************************************************
@@ -667,6 +572,176 @@ gtk_tree_menu_cell_layout_get_area (GtkCellLayout *layout)
/****************************************************************
* TreeModel callbacks/populating menus *
****************************************************************/
+static GtkWidget *
+gtk_tree_menu_get_path_item (GtkTreeMenu *menu,
+ GtkTreePath *search)
+{
+ GtkWidget *item = NULL;
+ GList *children, *l;
+
+ children = gtk_container_get_children (GTK_CONTAINER (menu));
+
+ for (l = children; item == NULL && l != NULL; l = l->next)
+ {
+ GtkWidget *child = l->data;
+ GtkTreePath *path = NULL;
+
+ if (GTK_IS_SEPARATOR_MENU_ITEM (child))
+ {
+ GtkTreeRowReference *row =
+ g_object_get_qdata (G_OBJECT (child), tree_menu_path_quark);
+
+ if (row && gtk_tree_row_reference_valid (row))
+ path = gtk_tree_row_reference_get_path (row);
+ }
+ else
+ {
+ GtkWidget *view = gtk_bin_get_child (GTK_BIN (child));
+
+ /* It's always a cellview */
+ if (GTK_IS_CELL_VIEW (view))
+ path = gtk_cell_view_get_displayed_row (GTK_CELL_VIEW (view));
+ }
+
+ if (path)
+ {
+ if (gtk_tree_path_compare (search, path) == 0)
+ item = child;
+
+ gtk_tree_path_free (path);
+ }
+ }
+
+ g_list_free (children);
+
+ return item;
+}
+
+static void
+row_inserted_cb (GtkTreeModel *model,
+ GtkTreePath *path,
+ GtkTreeIter *iter,
+ GtkTreeMenu *menu)
+{
+ GtkTreeMenuPrivate *priv = menu->priv;
+ GtkTreePath *parent_path;
+ gboolean this_menu = FALSE;
+ gint *indices, index, depth;
+
+ parent_path = gtk_tree_path_copy (path);
+
+ /* Check if the menu and the added iter are in root of the model */
+ if (!gtk_tree_path_up (parent_path))
+ {
+ if (!priv->root)
+ this_menu = TRUE;
+ }
+ /* If we are a submenu, compare the path */
+ else if (priv->root)
+ {
+ GtkTreePath *root_path =
+ gtk_tree_row_reference_get_path (priv->root);
+
+ if (gtk_tree_path_compare (root_path, parent_path) == 0)
+ this_menu = TRUE;
+
+ gtk_tree_path_free (root_path);
+ }
+
+ gtk_tree_path_free (parent_path);
+
+ /* If the iter should be in this menu then go ahead and insert it */
+ if (this_menu)
+ {
+ GtkWidget *item;
+
+ /* Get the index of the path for this depth */
+ indices = gtk_tree_path_get_indices (path);
+ depth = gtk_tree_path_get_depth (path);
+ index = indices[depth -1];
+
+ /* Menus with a header include a menuitem for it's root node
+ * and a separator menu item */
+ if (priv->menu_with_header)
+ index += 2;
+
+ item = gtk_tree_menu_create_item (menu, iter, FALSE);
+ gtk_menu_shell_insert (GTK_MENU_SHELL (menu), item, index);
+
+ /* Resize everything */
+ gtk_cell_area_context_flush (menu->priv->context);
+ }
+}
+
+static void
+row_deleted_cb (GtkTreeModel *model,
+ GtkTreePath *path,
+ GtkTreeMenu *menu)
+{
+ GtkTreeMenuPrivate *priv = menu->priv;
+ GtkTreePath *root_path;
+ GtkWidget *item;
+
+ /* If it's the root node we leave it to the parent menu to remove us
+ * from its menu */
+ if (priv->root)
+ {
+ root_path = gtk_tree_row_reference_get_path (priv->root);
+
+ if (gtk_tree_path_compare (root_path, path) == 0)
+ {
+ gtk_tree_path_free (root_path);
+ return;
+ }
+ }
+
+ /* Get rid of the deleted item */
+ item = gtk_tree_menu_get_path_item (menu, path);
+ if (item)
+ {
+ gtk_widget_destroy (item);
+
+ /* Resize everything */
+ gtk_cell_area_context_flush (menu->priv->context);
+ }
+}
+
+static void
+row_reordered_cb (GtkTreeModel *model,
+ GtkTreePath *path,
+ GtkTreeIter *iter,
+ gint *new_order,
+ GtkTreeMenu *menu)
+{
+ GtkTreeMenuPrivate *priv = menu->priv;
+ gboolean this_menu = FALSE;
+
+ if (iter == NULL && priv->root == NULL)
+ this_menu = TRUE;
+ else if (priv->root)
+ {
+ GtkTreePath *root_path =
+ gtk_tree_row_reference_get_path (priv->root);
+
+ if (gtk_tree_path_compare (root_path, path) == 0)
+ this_menu = TRUE;
+
+ gtk_tree_path_free (root_path);
+ }
+
+ if (this_menu)
+ {
+ /* Destroy and repopulate the menu at the level where the order changed */
+ gtk_container_foreach (GTK_CONTAINER (menu),
+ (GtkCallback) gtk_widget_destroy, NULL);
+
+ gtk_tree_menu_populate (menu);
+
+ /* Resize everything */
+ gtk_cell_area_context_flush (menu->priv->context);
+ }
+}
+
static void
context_size_changed_cb (GtkCellAreaContext *context,
GParamSpec *pspec,
@@ -696,28 +771,73 @@ gtk_tree_menu_set_area (GtkTreeMenu *menu,
static GtkWidget *
gtk_tree_menu_create_item (GtkTreeMenu *menu,
- GtkTreeIter *iter)
+ GtkTreeIter *iter,
+ gboolean header_item)
{
GtkTreeMenuPrivate *priv = menu->priv;
GtkWidget *item, *view;
GtkTreePath *path;
-
- view = gtk_cell_view_new_with_context (priv->area, priv->context);
- item = gtk_menu_item_new ();
- gtk_widget_show (view);
- gtk_widget_show (item);
+ gboolean is_separator = FALSE;
path = gtk_tree_model_get_path (priv->model, iter);
- gtk_cell_view_set_model (GTK_CELL_VIEW (view), priv->model);
- gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (view), path);
+ if (priv->row_separator_func)
+ is_separator =
+ priv->row_separator_func (priv->model, iter,
+ priv->row_separator_data);
- gtk_tree_path_free (path);
+ if (is_separator)
+ {
+ item = gtk_separator_menu_item_new ();
- gtk_widget_show (view);
- gtk_container_add (GTK_CONTAINER (item), view);
+ g_object_set_qdata_full (G_OBJECT (item),
+ tree_menu_path_quark,
+ gtk_tree_row_reference_new (priv->model, path),
+ (GDestroyNotify)gtk_tree_row_reference_free);
+ }
+ else
+ {
+ view = gtk_cell_view_new_with_context (priv->area, priv->context);
+ item = gtk_menu_item_new ();
+ gtk_widget_show (view);
+ gtk_widget_show (item);
+
+ gtk_cell_view_set_model (GTK_CELL_VIEW (view), priv->model);
+ gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (view), path);
+
+ gtk_widget_show (view);
+ gtk_container_add (GTK_CONTAINER (item), view);
+
+ g_signal_connect (item, "activate", G_CALLBACK (item_activated_cb), menu);
+
+ /* Add a GtkTreeMenu submenu to render the children of this row */
+ if (header_item == FALSE &&
+ gtk_tree_model_iter_has_child (priv->model, iter))
+ {
+ GtkWidget *submenu;
+
+ submenu = gtk_tree_menu_new_with_area (priv->area);
- g_signal_connect (item, "activate", G_CALLBACK (item_activated_cb), menu);
+ gtk_tree_menu_set_row_separator_func (GTK_TREE_MENU (submenu),
+ priv->row_separator_func,
+ priv->row_separator_data,
+ priv->row_separator_destroy);
+ gtk_tree_menu_set_header_func (GTK_TREE_MENU (submenu),
+ priv->header_func,
+ priv->header_data,
+ priv->header_destroy);
+
+ gtk_tree_menu_set_model (GTK_TREE_MENU (submenu), priv->model);
+ gtk_tree_menu_set_root (GTK_TREE_MENU (submenu), path);
+
+ gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), submenu);
+
+ g_signal_connect (submenu, "menu-activate",
+ G_CALLBACK (submenu_activated_cb), menu);
+ }
+ }
+
+ gtk_tree_path_free (path);
return item;
}
@@ -750,12 +870,14 @@ gtk_tree_menu_populate (GtkTreeMenu *menu)
/* Add a submenu header for rows which desire one, used for
* combo boxes to allow all rows to be activatable/selectable
*/
- menu_item = gtk_tree_menu_create_item (menu, &parent);
+ menu_item = gtk_tree_menu_create_item (menu, &parent, TRUE);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
menu_item = gtk_separator_menu_item_new ();
gtk_widget_show (menu_item);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
+
+ priv->menu_with_header = TRUE;
}
}
gtk_tree_path_free (path);
@@ -767,49 +889,7 @@ gtk_tree_menu_populate (GtkTreeMenu *menu)
* submenu for iters/items that have children */
while (valid)
{
- gboolean is_separator = FALSE;
-
- if (priv->row_separator_func)
- is_separator =
- priv->row_separator_func (priv->model, &iter,
- priv->row_separator_data);
-
- if (is_separator)
- menu_item = gtk_separator_menu_item_new ();
- else
- {
- menu_item = gtk_tree_menu_create_item (menu, &iter);
-
- /* Add a GtkTreeMenu submenu to render the children of this row */
- if (gtk_tree_model_iter_has_child (priv->model, &iter))
- {
- GtkTreePath *row_path;
- GtkWidget *submenu;
-
- row_path = gtk_tree_model_get_path (priv->model, &iter);
- submenu = gtk_tree_menu_new_with_area (priv->area);
-
- gtk_tree_menu_set_row_separator_func (GTK_TREE_MENU (submenu),
- priv->row_separator_func,
- priv->row_separator_data,
- priv->row_separator_destroy);
- gtk_tree_menu_set_header_func (GTK_TREE_MENU (submenu),
- priv->header_func,
- priv->header_data,
- priv->header_destroy);
-
- gtk_tree_menu_set_model (GTK_TREE_MENU (submenu), priv->model);
- gtk_tree_menu_set_root (GTK_TREE_MENU (submenu), row_path);
-
- gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), submenu);
-
- gtk_tree_path_free (row_path);
-
- g_signal_connect (submenu, "menu-activate",
- G_CALLBACK (submenu_activated_cb), menu);
- }
- }
-
+ menu_item = gtk_tree_menu_create_item (menu, &iter, FALSE);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
valid = gtk_tree_model_iter_next (priv->model, &iter);
@@ -891,6 +971,15 @@ gtk_tree_menu_set_model (GtkTreeMenu *menu,
if (priv->model)
{
/* Disconnect signals */
+ g_signal_handler_disconnect (priv->model,
+ priv->row_inserted_id);
+ g_signal_handler_disconnect (priv->model,
+ priv->row_deleted_id);
+ g_signal_handler_disconnect (priv->model,
+ priv->row_reordered_id);
+ priv->row_inserted_id = 0;
+ priv->row_deleted_id = 0;
+ priv->row_reordered_id = 0;
g_object_unref (priv->model);
}
@@ -899,9 +988,15 @@ gtk_tree_menu_set_model (GtkTreeMenu *menu,
if (priv->model)
{
- /* Connect signals */
-
g_object_ref (priv->model);
+
+ /* Connect signals */
+ priv->row_inserted_id = g_signal_connect (priv->model, "row-inserted",
+ G_CALLBACK (row_inserted_cb), menu);
+ priv->row_deleted_id = g_signal_connect (priv->model, "row-deleted",
+ G_CALLBACK (row_deleted_cb), menu);
+ priv->row_reordered_id = g_signal_connect (priv->model, "rows-reordered",
+ G_CALLBACK (row_reordered_cb), menu);
}
}
}
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