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Allow GtkComboBox popup to be wider than the combo itself.

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This patch adds a GtkComboBox:popup-fixed-width to decide if the
popup's width should be a fixed width matching the combo's allocated width.

The patch includes a kindof hack to work around treeviews currently
not supporting height-for-width geometry (for list-mode only), this
hack can be safely removed once treeviews start reporting natural
widths properly.
This commit is contained in:
Tristan Van Berkom 2010-10-16 18:01:33 +09:00
parent 17cd0db6a8
commit 31abdf723a
3 changed files with 199 additions and 21 deletions
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162
gtk/gtkcombobox.c
View File

@ -155,6 +155,7 @@ struct _GtkComboBoxPrivate
guint focus_on_click : 1;
guint button_sensitivity : 2;
guint has_entry : 1;
guint popup_fixed_width : 1;
GtkTreeViewRowSeparatorFunc row_separator_func;
gpointer row_separator_data;
@ -243,7 +244,8 @@ enum {
PROP_BUTTON_SENSITIVITY,
PROP_EDITING_CANCELED,
PROP_HAS_ENTRY,
PROP_ENTRY_TEXT_COLUMN
PROP_ENTRY_TEXT_COLUMN,
PROP_POPUP_FIXED_WIDTH
};
static guint combo_box_signals[LAST_SIGNAL] = {0,};
@ -949,6 +951,24 @@ gtk_combo_box_class_init (GtkComboBoxClass *klass)
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE));
/**
* GtkComboBox:popup-fixed-width:
*
* Whether the popup's width should be a fixed width matching the
* allocated width of the combo box.
*
* Since: 3.0
*/
g_object_class_install_property (object_class,
PROP_POPUP_FIXED_WIDTH,
g_param_spec_boolean ("popup-fixed-width",
P_("Popup Fixed Width"),
P_("Whether the popup's width should be a "
"fixed width matching the allocated width "
"of the combo box"),
TRUE,
GTK_PARAM_READWRITE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boolean ("appears-as-list",
P_("Appears as list"),
@ -1056,6 +1076,7 @@ gtk_combo_box_init (GtkComboBox *combo_box)
priv->focus_on_click = TRUE;
priv->button_sensitivity = GTK_SENSITIVITY_AUTO;
priv->has_entry = FALSE;
priv->popup_fixed_width = TRUE;
priv->text_column = -1;
priv->text_renderer = NULL;
@ -1133,6 +1154,11 @@ gtk_combo_box_set_property (GObject *object,
g_value_get_enum (value));
break;
case PROP_POPUP_FIXED_WIDTH:
gtk_combo_box_set_popup_fixed_width (combo_box,
g_value_get_boolean (value));
break;
case PROP_EDITING_CANCELED:
combo_box->priv->editing_canceled = g_value_get_boolean (value);
break;
@ -1206,6 +1232,10 @@ gtk_combo_box_get_property (GObject *object,
g_value_set_enum (value, combo_box->priv->button_sensitivity);
break;
case PROP_POPUP_FIXED_WIDTH:
g_value_set_boolean (value, combo_box->priv->popup_fixed_width);
break;
case PROP_EDITING_CANCELED:
g_value_set_boolean (value, priv->editing_canceled);
break;
@ -1677,8 +1707,10 @@ gtk_combo_box_menu_position_below (GtkMenu *menu,
if (GTK_SHADOW_NONE != combo_box->priv->shadow_type)
sx -= gtk_widget_get_style (GTK_WIDGET (combo_box))->xthickness;
gtk_widget_get_preferred_size (GTK_WIDGET (menu),
&req, NULL);
if (combo_box->priv->popup_fixed_width)
gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);
else
gtk_widget_get_preferred_size (GTK_WIDGET (menu), NULL, &req);
if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_LTR)
*x = sx;
@ -1737,7 +1769,10 @@ gtk_combo_box_menu_position_over (GtkMenu *menu,
menu_xpos = allocation.x;
menu_ypos = allocation.y + allocation.height / 2 - 2;
gtk_widget_get_preferred_width (GTK_WIDGET (menu), &menu_width, NULL);
if (combo_box->priv->popup_fixed_width)
gtk_widget_get_preferred_width (GTK_WIDGET (menu), &menu_width, NULL);
else
gtk_widget_get_preferred_width (GTK_WIDGET (menu), NULL, &menu_width);
if (active != NULL)
{
@ -1795,7 +1830,6 @@ gtk_combo_box_menu_position (GtkMenu *menu,
GtkComboBoxPrivate *priv = combo_box->priv;
GtkWidget *menu_item;
if (priv->wrap_width > 0 || priv->cell_view == NULL)
gtk_combo_box_menu_position_below (menu, x, y, push_in, user_data);
else
@ -1854,16 +1888,47 @@ gtk_combo_box_list_position (GtkComboBox *combo_box,
hpolicy = vpolicy = GTK_POLICY_NEVER;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
gtk_widget_get_preferred_size (priv->scrolled_window,
&popup_req, NULL);
if (popup_req.width > *width)
/* XXX This set_size_request call is part of the hack outlined below and can
* go away once height-for-width is implemented on treeviews. */
gtk_widget_set_size_request (priv->tree_view, -1, -1);
if (combo_box->priv->popup_fixed_width)
{
hpolicy = GTK_POLICY_ALWAYS;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
gtk_widget_get_preferred_size (priv->scrolled_window,
&popup_req, NULL);
gtk_widget_get_preferred_size (priv->scrolled_window, &popup_req, NULL);
if (popup_req.width > *width)
{
hpolicy = GTK_POLICY_ALWAYS;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
}
}
else
{
gtk_combo_box_remeasure (combo_box);
if (priv->natural_width > *width)
{
hpolicy = GTK_POLICY_NEVER;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
hpolicy, vpolicy);
/* XXX Currently we set the size-request on the internal treeview to be
* the natural width of the cells, this hack can go away once our
* treeview does height-for-width properly (i.e. just adjust *width
* here to be the natural width request of the scrolled-window).
*
* I can't tell why the magic number 5 is needed here (i.e. without it
* treeviews are left ellipsizing) , however it this all should be
* removed with height-for-width treeviews.
*/
gtk_widget_set_size_request (priv->tree_view, priv->natural_width + 5, -1);
gtk_widget_get_preferred_size (priv->scrolled_window, NULL, &popup_req);
*width = popup_req.width;
}
}
*height = popup_req.height;
@ -1872,6 +1937,9 @@ gtk_combo_box_list_position (GtkComboBox *combo_box,
monitor_num = gdk_screen_get_monitor_at_window (screen, window);
gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_RTL)
*x = *x + allocation.width - *width;
if (*x < monitor.x)
*x = monitor.x;
else if (*x + *width > monitor.x + monitor.width)
@ -2014,7 +2082,7 @@ gtk_combo_box_menu_popup (GtkComboBox *combo_box,
GtkComboBoxPrivate *priv = combo_box->priv;
GtkTreePath *path;
gint active_item;
gint width, min_width;
gint width, min_width, nat_width;
update_menu_sensitivity (combo_box, priv->popup_widget);
@ -2039,10 +2107,14 @@ gtk_combo_box_menu_popup (GtkComboBox *combo_box,
gtk_widget_get_allocation (GTK_WIDGET (combo_box), &allocation);
width = allocation.width;
gtk_widget_set_size_request (priv->popup_widget, -1, -1);
gtk_widget_get_preferred_width (priv->popup_widget, &min_width, NULL);
gtk_widget_set_size_request (priv->popup_widget,
MAX (width, min_width), -1);
gtk_widget_get_preferred_width (priv->popup_widget, &min_width, &nat_width);
if (combo_box->priv->popup_fixed_width)
width = MAX (width, min_width);
else
width = MAX (width, nat_width);
gtk_widget_set_size_request (priv->popup_widget, width, -1);
}
gtk_menu_popup (GTK_MENU (priv->popup_widget),
@ -2440,7 +2512,7 @@ gtk_combo_box_size_allocate (GtkWidget *widget,
if (gtk_widget_get_visible (priv->popup_widget))
{
gint width, min_width;
gint width, menu_width;
if (priv->wrap_width == 0)
{
@ -2449,9 +2521,14 @@ gtk_combo_box_size_allocate (GtkWidget *widget,
gtk_widget_get_allocation (GTK_WIDGET (combo_box), &combo_box_allocation);
width = combo_box_allocation.width;
gtk_widget_set_size_request (priv->popup_widget, -1, -1);
gtk_widget_get_preferred_width (priv->popup_widget, &min_width, NULL);
if (combo_box->priv->popup_fixed_width)
gtk_widget_get_preferred_width (priv->popup_widget, &menu_width, NULL);
else
gtk_widget_get_preferred_width (priv->popup_widget, NULL, &menu_width);
gtk_widget_set_size_request (priv->popup_widget,
MAX (width, min_width), -1);
MAX (width, menu_width), -1);
}
/* reposition the menu after giving it a new width */
@ -6021,6 +6098,49 @@ gtk_combo_box_set_title (GtkComboBox *combo_box,
}
}
/**
* gtk_combo_box_set_popup_fixed_width:
* @combo_box: a #GtkComboBox
* @fixed: whether to use a fixed popup width
*
* Specifies whether the popup's width should be a fixed width matching
* the allocated width of the combo box.
*
* Since: 3.0
**/
void
gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
gboolean fixed)
{
g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
if (combo_box->priv->popup_fixed_width != fixed)
{
combo_box->priv->popup_fixed_width = fixed;
g_object_notify (G_OBJECT (combo_box), "popup-fixed-width");
}
}
/**
* gtk_combo_box_get_popup_fixed_width:
* @combo_box: a #GtkComboBox
*
* Gets whether the popup uses a fixed width matching
* the allocated width of the combo box.
*
* Since: 3.0
**/
gboolean
gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
return combo_box->priv->popup_fixed_width;
}
/**
* gtk_combo_box_get_popup_accessible:
* @combo_box: a #GtkComboBox

4
gtk/gtkcombobox.h
View File

@ -124,6 +124,10 @@ void gtk_combo_box_set_entry_text_column (GtkComboBox *com
gint text_column);
gint gtk_combo_box_get_entry_text_column (GtkComboBox *combo_box);
void gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
gboolean fixed);
gboolean gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box);
#ifndef GTK_DISABLE_DEPRECATED
/* convenience -- text */

54
tests/testcombo.c
View File

@ -372,6 +372,39 @@ create_list_blaat (void)
return GTK_TREE_MODEL (store);
}
static GtkTreeModel *
create_list_long (void)
{
GtkTreeIter iter;
GtkListStore *store;
store = gtk_list_store_new (1, G_TYPE_STRING);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
0, "here is some long long text that grows out of the combo's allocation",
-1);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
0, "with at least a few of these rows",
-1);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
0, "so that we can get some ellipsized text here",
-1);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
0, "and see the combo box menu being allocated without any constraints",
-1);
return GTK_TREE_MODEL (store);
}
/* blaat */
static GtkTreeModel *
create_phylogenetic_tree (void)
@ -1343,6 +1376,27 @@ main (int argc, char **argv)
gdk_threads_add_timeout (1000, (GSourceFunc) capital_animation, model);
#endif
/* Ellipsizing growing combos */
tmp = gtk_frame_new ("Unconstrained Menu");
gtk_box_pack_start (GTK_BOX (mainbox), tmp, FALSE, FALSE, 0);
boom = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (boom), 5);
gtk_container_add (GTK_CONTAINER (tmp), boom);
model = create_list_long ();
combobox = gtk_combo_box_new_with_model (model);
g_object_unref (model);
gtk_container_add (GTK_CONTAINER (boom), combobox);
renderer = gtk_cell_renderer_text_new ();
g_object_set (G_OBJECT (renderer), "ellipsize", PANGO_ELLIPSIZE_END, NULL);
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combobox), renderer, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combobox), renderer,
"text", 0, NULL);
gtk_combo_box_set_active (GTK_COMBO_BOX (combobox), 0);
gtk_combo_box_set_popup_fixed_width (GTK_COMBO_BOX (combobox), FALSE);
gtk_widget_show_all (window);
gtk_main ();