[Patch] Scrolling menus
- From: Alexander Larsson <alla lysator liu se>
- To: gtk-devel-list gnome org
- Subject: [Patch] Scrolling menus
- Date: Tue, 10 Oct 2000 17:51:24 +0200 (CEST)
Ok, here is my attempt at adding scrolling menus to Gtk+.
It is lightly based on a patch by samuel animeta com posted earlier on
this list and on the comments owed had on it.
There is currently two bugs:
* I don't seem to get any button press event in the tearoff window, so you
can't scroll in the tearoff window.
* I don't get an enter_notify event when entering the menu at a scroll
arrow, unless you go via a menu item.
I will continue to try and fix these problems, but I post this so I can
get some general comments on the rest of the patch.
/ Alex
Index: gtkitemfactory.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkitemfactory.c,v
retrieving revision 1.31
diff -u -p -r1.31 gtkitemfactory.c
--- gtkitemfactory.c 2000/07/26 11:32:44 1.31
+++ gtkitemfactory.c 2000/10/10 15:36:26
@@ -1386,6 +1386,7 @@ static void
gtk_item_factory_menu_pos (GtkMenu *menu,
gint *x,
gint *y,
+ gint *scroll_offset,
gpointer func_data)
{
MenuPos *mpos = func_data;
Index: gtkmenu.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkmenu.c,v
retrieving revision 1.49
diff -u -p -r1.49 gtkmenu.c
--- gtkmenu.c 2000/09/08 01:53:46 1.49
+++ gtkmenu.c 2000/10/10 15:36:27
@@ -41,6 +41,9 @@
#define SUBMENU_NAV_REGION_PADDING 2
#define SUBMENU_NAV_HYSTERESIS_TIMEOUT 333
+#define MENU_SCROLL_ARROW_HEIGHT 16
+#define MENU_SCROLL_TIMEOUT 200
+
typedef struct _GtkMenuAttachData GtkMenuAttachData;
struct _GtkMenuAttachData
@@ -50,27 +53,38 @@ struct _GtkMenuAttachData
};
-static void gtk_menu_class_init (GtkMenuClass *klass);
-static void gtk_menu_init (GtkMenu *menu);
-static void gtk_menu_destroy (GtkObject *object);
-static void gtk_menu_realize (GtkWidget *widget);
-static void gtk_menu_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
-static void gtk_menu_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static void gtk_menu_paint (GtkWidget *widget);
-static void gtk_menu_draw (GtkWidget *widget,
- GdkRectangle *area);
-static gboolean gtk_menu_expose (GtkWidget *widget,
- GdkEventExpose *event);
-static gboolean gtk_menu_key_press (GtkWidget *widget,
- GdkEventKey *event);
-static gboolean gtk_menu_motion_notify (GtkWidget *widget,
- GdkEventMotion *event);
-static gboolean gtk_menu_enter_notify (GtkWidget *widget,
- GdkEventCrossing *event);
-static gboolean gtk_menu_leave_notify (GtkWidget *widget,
- GdkEventCrossing *event);
+static void gtk_menu_class_init (GtkMenuClass *klass);
+static void gtk_menu_init (GtkMenu *menu);
+static void gtk_menu_destroy (GtkObject *object);
+static void gtk_menu_realize (GtkWidget *widget);
+static void gtk_menu_unrealize (GtkWidget *widget);
+static void gtk_menu_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gtk_menu_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void gtk_menu_paint (GtkWidget *widget);
+static void gtk_menu_draw (GtkWidget *widget,
+ GdkRectangle *area);
+static gboolean gtk_menu_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+static gboolean gtk_menu_button_press (GtkWidget *widget,
+ GdkEventButton *event);
+static gboolean gtk_menu_button_release (GtkWidget *widget,
+ GdkEventButton *event);
+static gboolean gtk_menu_key_press (GtkWidget *widget,
+ GdkEventKey *event);
+static gboolean gtk_menu_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event);
+static gboolean gtk_menu_enter_notify (GtkWidget *widget,
+ GdkEventCrossing *event);
+static gboolean gtk_menu_leave_notify (GtkWidget *widget,
+ GdkEventCrossing *event);
+static void gtk_menu_scroll_to (GtkMenu *menu,
+ guint position);
+static gboolean gtk_menu_scroll_timeout (gpointer data);
+static gint gtk_menu_on_arrow (GtkMenu *menu);
+static void gtk_menu_select_item (GtkMenuShell *menu_shell,
+ GtkWidget *menu_item);
static void gtk_menu_stop_navigating_submenu (GtkMenu *menu);
static gboolean gtk_menu_stop_navigating_submenu_cb (gpointer user_data);
@@ -137,11 +151,14 @@ gtk_menu_class_init (GtkMenuClass *class
object_class->destroy = gtk_menu_destroy;
widget_class->realize = gtk_menu_realize;
+ widget_class->unrealize = gtk_menu_unrealize;
widget_class->draw = gtk_menu_draw;
widget_class->size_request = gtk_menu_size_request;
widget_class->size_allocate = gtk_menu_size_allocate;
widget_class->expose_event = gtk_menu_expose;
widget_class->key_press_event = gtk_menu_key_press;
+ widget_class->button_press_event = gtk_menu_button_press;
+ widget_class->button_release_event = gtk_menu_button_release;
widget_class->motion_notify_event = gtk_menu_motion_notify;
widget_class->show_all = gtk_menu_show_all;
widget_class->hide_all = gtk_menu_hide_all;
@@ -150,6 +167,7 @@ gtk_menu_class_init (GtkMenuClass *class
menu_shell_class->submenu_placement = GTK_LEFT_RIGHT;
menu_shell_class->deactivate = gtk_menu_deactivate;
+ menu_shell_class->select_item = gtk_menu_select_item;
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
@@ -188,6 +206,8 @@ gtk_menu_window_event (GtkWidget *window
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
+ case GDK_BUTTON_PRESS:
+ case GDK_BUTTON_RELEASE:
gtk_widget_event (menu, event);
handled = TRUE;
break;
@@ -225,9 +245,21 @@ gtk_menu_init (GtkMenu *menu)
GTK_WIDGET_SET_FLAGS (menu, GTK_FLOATING);
menu->needs_destruction_ref_count = TRUE;
+ menu->view_window = NULL;
+ menu->item_window = NULL;
+
+ menu->first_item = 0;
+ menu->scrolling_direction = 0;
+ menu->timeout_id = 0;
+
menu->tearoff_window = NULL;
menu->torn_off = FALSE;
+ menu->upper_arrow_visible = FALSE;
+ menu->lower_arrow_visible = FALSE;
+ menu->upper_arrow_prelight = FALSE;
+ menu->lower_arrow_prelight = FALSE;
+
MENU_NEEDS_RESIZE (menu) = TRUE;
}
@@ -241,6 +273,9 @@ gtk_menu_destroy (GtkObject *object)
menu = GTK_MENU (object);
+ if (menu->timeout_id)
+ g_source_remove (menu->timeout_id);
+
data = gtk_object_get_data (object, attach_data_key);
if (data)
gtk_menu_detach (menu);
@@ -385,6 +420,7 @@ static void
gtk_menu_tearoff_bg_copy (GtkMenu *menu)
{
GtkWidget *widget;
+ gint width, height;
widget = GTK_WIDGET (menu);
@@ -398,9 +434,11 @@ gtk_menu_tearoff_bg_copy (GtkMenu *menu)
gc = gdk_gc_new_with_values (widget->window,
&gc_values, GDK_GC_SUBWINDOW);
+ gdk_window_get_size (widget->window, &width, &height);
+
pixmap = gdk_pixmap_new (widget->window,
- widget->requisition.width,
- widget->requisition.height,
+ width,
+ height,
-1);
gdk_draw_pixmap (pixmap, gc,
@@ -409,9 +447,9 @@ gtk_menu_tearoff_bg_copy (GtkMenu *menu)
gdk_gc_unref (gc);
gtk_widget_set_usize (menu->tearoff_window,
- widget->requisition.width,
- widget->requisition.height);
-
+ width,
+ height);
+
gdk_window_set_back_pixmap (menu->tearoff_window->window, pixmap, FALSE);
gdk_pixmap_unref (pixmap);
}
@@ -527,6 +565,8 @@ gtk_menu_popup (GtkMenu *menu,
gdk_cursor_destroy (cursor);
}
+ gtk_menu_scroll_to (menu, menu->first_item);
+
gtk_grab_add (GTK_WIDGET (menu));
}
@@ -534,7 +574,7 @@ void
gtk_menu_popdown (GtkMenu *menu)
{
GtkMenuShell *menu_shell;
-
+
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
@@ -543,6 +583,12 @@ gtk_menu_popdown (GtkMenu *menu)
menu_shell->parent_menu_shell = NULL;
menu_shell->active = FALSE;
menu_shell->ignore_enter = FALSE;
+
+ if (menu->timeout_id)
+ {
+ g_source_remove (menu->timeout_id);
+ menu->timeout_id = 0;
+ }
gtk_menu_stop_navigating_submenu (menu);
@@ -769,6 +815,9 @@ gtk_menu_set_tearoff_state (GtkMenu *me
gtk_widget_show (GTK_WIDGET (menu));
gtk_widget_show (menu->tearoff_window);
+
+ gtk_menu_scroll_to (menu, menu->first_item);
+
}
else
{
@@ -812,9 +861,16 @@ gtk_menu_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
-
+ gint border_width;
+ gint event_mask;
+ GtkMenu *menu;
+ GtkWidget *child;
+ GList *children;
+
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
+
+ menu = GTK_MENU (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
@@ -826,19 +882,102 @@ gtk_menu_realize (GtkWidget *widget)
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
- attributes.event_mask = gtk_widget_get_events (widget);
- attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK);
+
+ event_mask = gtk_widget_get_events (widget);
+ event_mask |= (GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK);
+ attributes.event_mask = event_mask;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
+ border_width = GTK_CONTAINER (widget)->border_width;
+
+ attributes.x += border_width + widget->style->xthickness;
+ attributes.y += border_width + widget->style->ythickness;
+ attributes.width = MAX (1, (gint)widget->allocation.width - border_width * 2 - widget->style->xthickness * 2);
+ attributes.height = MAX (1, (gint)widget->allocation.height - border_width * 2 - widget->style->ythickness * 2);
+ attributes.event_mask = 0;
+
+ if (menu->upper_arrow_visible)
+ {
+ attributes.y += MENU_SCROLL_ARROW_HEIGHT;
+ attributes.height -= MENU_SCROLL_ARROW_HEIGHT;
+ }
+ if (menu->lower_arrow_visible)
+ attributes.height -= MENU_SCROLL_ARROW_HEIGHT;
+
+ menu->view_window = gdk_window_new (widget->window, &attributes, attributes_mask);
+ gdk_window_set_user_data (menu->view_window, menu);
+
+ attributes.x = 0;
+ attributes.y = 0;
+ attributes.event_mask = event_mask;
+
+ /* Calculate height of the item_window. Start with the height of
+ * view_window so that we get extra space that can show up at the
+ * end when the menu is scrolled so that the last item is visible.
+ */
+ children = GTK_MENU_SHELL (menu)->children;
+ while (children)
+ {
+ child = children->data;
+ children = children->next;
+
+ if (GTK_WIDGET_VISIBLE (child))
+ {
+ GtkRequisition child_requisition;
+ gtk_widget_get_child_requisition (child, &child_requisition);
+
+ attributes.height += child_requisition.height;
+ }
+ }
+
+ menu->item_window = gdk_window_new (menu->view_window, &attributes, attributes_mask);
+ gdk_window_set_user_data (menu->item_window, menu);
+
+ children = GTK_MENU_SHELL (menu)->children;
+ while (children)
+ {
+ child = children->data;
+ children = children->next;
+
+ gtk_widget_set_parent_window (child, menu->item_window);
+ }
+
widget->style = gtk_style_attach (widget->style, widget->window);
+ gtk_style_set_background (widget->style, menu->item_window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+
gtk_menu_paint(widget);
+
+ gdk_window_show (menu->item_window);
+ gdk_window_show (menu->view_window);
}
static void
+gtk_menu_unrealize (GtkWidget *widget)
+{
+ GtkMenu *menu;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_MENU (widget));
+
+ menu = GTK_MENU (widget);
+
+ gdk_window_set_user_data (menu->view_window, NULL);
+ gdk_window_destroy (menu->view_window);
+ menu->view_window = NULL;
+
+ gdk_window_set_user_data (menu->item_window, NULL);
+ gdk_window_destroy (menu->item_window);
+ menu->item_window = NULL;
+
+ if (GTK_WIDGET_CLASS (parent_class)->unrealize)
+ (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
+}
+
+static void
gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
@@ -907,28 +1046,51 @@ gtk_menu_size_allocate (GtkWidget *w
GtkWidget *child;
GtkAllocation child_allocation;
GList *children;
-
+ gint x, y;
+ gint width, height;
+
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (allocation != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
-
+
widget->allocation = *allocation;
- if (GTK_WIDGET_REALIZED (widget))
- gdk_window_move_resize (widget->window,
- allocation->x, allocation->y,
- allocation->width, allocation->height);
+ x = (GTK_CONTAINER (menu)->border_width + widget->style->xthickness);
+ y = (GTK_CONTAINER (menu)->border_width + widget->style->ythickness);
+
+ width = MAX (1, (gint)allocation->width - x * 2);
+ height = MAX (1, (gint)allocation->height - y * 2);
+
+ if (menu->upper_arrow_visible)
+ {
+ y += MENU_SCROLL_ARROW_HEIGHT;
+ height -= MENU_SCROLL_ARROW_HEIGHT;
+ }
+
+ if (menu->lower_arrow_visible)
+ height -= MENU_SCROLL_ARROW_HEIGHT;
+
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ gdk_window_move_resize (widget->window,
+ allocation->x, allocation->y,
+ allocation->width, allocation->height);
+
+ gdk_window_move_resize (menu->view_window,
+ x,
+ y,
+ width,
+ height);
+ }
if (menu_shell->children)
{
- child_allocation.x = (GTK_CONTAINER (menu)->border_width +
- widget->style->xthickness);
- child_allocation.y = (GTK_CONTAINER (menu)->border_width +
- widget->style->ythickness);
- child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2);
+ child_allocation.x = 0;
+ child_allocation.y = 0;
+ child_allocation.width = width;
children = menu_shell->children;
while (children)
@@ -949,14 +1111,29 @@ gtk_menu_size_allocate (GtkWidget *w
child_allocation.y += child_allocation.height;
}
}
+
+ /* Resize the item window */
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ gdk_window_resize (menu->item_window,
+ child_allocation.width,
+ child_allocation.y + allocation->height);
+ }
+
}
}
static void
gtk_menu_paint (GtkWidget *widget)
{
+ guint border;
+ guint width, height;
+ GtkMenu *menu;
+
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
+
+ menu = GTK_MENU(widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
@@ -966,7 +1143,43 @@ gtk_menu_paint (GtkWidget *widget)
GTK_SHADOW_OUT,
NULL, widget, "menu",
0, 0, -1, -1);
+
+ border = GTK_CONTAINER (widget)->border_width + widget->style->ythickness + 1;
+ gdk_window_get_size (widget->window, &width, &height);
+
+ if (menu->upper_arrow_visible)
+ {
+ gtk_paint_arrow (widget->style,
+ widget->window,
+ menu->upper_arrow_prelight ?
+ GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
+ GTK_SHADOW_OUT,
+ NULL, widget, "menu",
+ GTK_ARROW_UP,
+ TRUE,
+ width / 2 - MENU_SCROLL_ARROW_HEIGHT / 2 + 1,
+ border - 1,
+ MENU_SCROLL_ARROW_HEIGHT - 2,
+ MENU_SCROLL_ARROW_HEIGHT - 2);
+ }
+
+ if (menu->lower_arrow_visible)
+ {
+ gtk_paint_arrow (widget->style,
+ widget->window,
+ menu->lower_arrow_prelight ?
+ GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
+ GTK_SHADOW_OUT,
+ NULL, widget, "menu",
+ GTK_ARROW_DOWN,
+ TRUE,
+ width / 2 - MENU_SCROLL_ARROW_HEIGHT / 2 + 1,
+ height - border - MENU_SCROLL_ARROW_HEIGHT + 1,
+ MENU_SCROLL_ARROW_HEIGHT - 2,
+ MENU_SCROLL_ARROW_HEIGHT - 2);
+ }
}
+
}
static void
@@ -1038,13 +1251,106 @@ gtk_menu_expose (GtkWidget *widget,
return FALSE;
}
+static gint
+gtk_menu_on_arrow (GtkMenu *menu)
+{
+ gint width, height;
+ gint x, y;
+ guint border;
+ GtkWidget *widget;
+
+ widget = GTK_WIDGET (menu);
+
+ gdk_window_get_pointer (widget->window, &x, &y, NULL);
+ gdk_window_get_size (GTK_WIDGET (menu)->window, &width, &height);
+
+ border = GTK_CONTAINER (menu)->border_width + GTK_WIDGET (menu)->style->ythickness;
+ if (menu->upper_arrow_visible)
+ {
+ if ((x >= 0) && (x < width) &&
+ (y >= border) && (y < border + MENU_SCROLL_ARROW_HEIGHT))
+ {
+ return -1;
+ }
+ }
+
+ if (menu->lower_arrow_visible)
+ {
+ if ((x >= 0) && (x < width) &&
+ (y >= height - border - MENU_SCROLL_ARROW_HEIGHT) && (y < height - border))
+ {
+ return 1;
+ }
+ }
+
+ return FALSE;
+}
+
+static gboolean
+gtk_menu_button_press (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ GtkMenu *menu;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ menu = GTK_MENU (widget);
+
+ if ((GTK_MENU_SHELL(menu)->active) &&
+ (!GTK_MENU_SHELL(menu)->button))
+ {
+
+ if (gtk_menu_on_arrow (menu))
+ return TRUE;
+
+ }
+
+ if (GTK_WIDGET_CLASS (parent_class)->button_press_event)
+ return (* GTK_WIDGET_CLASS (parent_class)->button_press_event) (widget, event);
+
+ return FALSE;
+}
+
+static gboolean
+gtk_menu_button_release (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ GtkMenu *menu;
+ gint dir;
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ menu = GTK_MENU (widget);
+
+ if ((GTK_MENU_SHELL(menu)->active) &&
+ (!GTK_MENU_SHELL(menu)->button))
+ {
+ dir = gtk_menu_on_arrow (menu);
+ if (dir)
+ {
+ gtk_menu_scroll_to (menu, menu->first_item + dir);
+ return TRUE;
+ }
+ }
+
+ if (GTK_WIDGET_CLASS (parent_class)->button_release_event)
+ return (* GTK_WIDGET_CLASS (parent_class)->button_release_event) (widget, event);
+
+ return FALSE;
+}
+
+
static gboolean
gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell;
gboolean delete = FALSE;
-
+
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
@@ -1136,6 +1442,7 @@ gtk_menu_motion_notify (GtkWidget *w
gboolean need_enter;
+
/* We received the event for one of two reasons:
*
* a) We are the active menu, and did gtk_grab_add()
@@ -1145,7 +1452,6 @@ gtk_menu_motion_notify (GtkWidget *w
* is the parent of the menu item, for a), we need to find that menu,
* which may be different from 'widget'.
*/
-
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (!menu_item || !GTK_IS_MENU_ITEM (menu_item) || !GTK_WIDGET_IS_SENSITIVE (menu_item) ||
!GTK_IS_MENU (menu_item->parent))
@@ -1199,11 +1505,111 @@ gtk_menu_motion_notify (GtkWidget *w
}
static gboolean
+gtk_menu_scroll_timeout (gpointer data)
+{
+ GtkMenu *menu;
+
+ menu = GTK_MENU (data);
+
+ gtk_menu_scroll_to (menu, menu->first_item + menu->scrolling_direction);
+
+ return TRUE;
+}
+
+static void
+gtk_menu_handle_scrolling(GtkMenu *menu)
+{
+ GtkMenuShell *menu_shell;
+ gint width, height;
+ gint x, y;
+ guint border;
+ GdkRectangle rect;
+ gboolean in_arrow;
+
+ menu_shell = GTK_MENU_SHELL (menu);
+
+ gdk_window_get_pointer (GTK_WIDGET (menu)->window, &x, &y, NULL);
+ gdk_window_get_size (GTK_WIDGET (menu)->window, &width, &height);
+
+ border = GTK_CONTAINER (menu)->border_width + GTK_WIDGET (menu)->style->ythickness;
+
+ if (menu->upper_arrow_visible)
+ {
+ rect.x = 0;
+ rect.y = border;
+ rect.width = width;
+ rect.height = MENU_SCROLL_ARROW_HEIGHT;
+
+ in_arrow = FALSE;
+ if ((x >= rect.x) && (x < rect.x + rect.width) &&
+ (y >= rect.y) && (y < rect.y + rect.height))
+ in_arrow = TRUE;
+
+ if (in_arrow != menu->upper_arrow_prelight)
+ {
+ menu->upper_arrow_prelight = in_arrow;
+ gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
+
+ if (menu->timeout_id)
+ {
+ g_source_remove (menu->timeout_id);
+ menu->timeout_id = 0;
+ menu->scrolling_direction = 0;
+ }
+
+ if (in_arrow && menu_shell->button)
+ {
+ /* Deselect the active item so that any submenus are poped down */
+ gtk_menu_shell_deselect (menu_shell);
+
+ menu->scrolling_direction = -1;
+ menu->timeout_id = g_timeout_add (MENU_SCROLL_TIMEOUT, gtk_menu_scroll_timeout, menu);
+ }
+ }
+ }
+
+ if (menu->lower_arrow_visible)
+ {
+ rect.x = 0;
+ rect.y = height - border - MENU_SCROLL_ARROW_HEIGHT;
+ rect.width = width;
+ rect.height = MENU_SCROLL_ARROW_HEIGHT;
+
+ in_arrow = FALSE;
+ if ((x >= rect.x) && (x < rect.x + rect.width) &&
+ (y >= rect.y) && (y < rect.y + rect.height))
+ in_arrow = TRUE;
+
+ if (in_arrow != menu->lower_arrow_prelight)
+ {
+ menu->lower_arrow_prelight = in_arrow;
+ gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
+
+ if (menu->timeout_id)
+ {
+ g_source_remove (menu->timeout_id);
+ menu->timeout_id = 0;
+ menu->scrolling_direction = 0;
+ }
+
+ if (in_arrow && menu_shell->button)
+ {
+ /* Deselect the active item so that any submenus are poped down */
+ gtk_menu_shell_deselect (menu_shell);
+
+ menu->scrolling_direction = 1;
+ menu->timeout_id = g_timeout_add (MENU_SCROLL_TIMEOUT, gtk_menu_scroll_timeout, menu);
+ }
+ }
+ }
+}
+
+static gboolean
gtk_menu_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkWidget *menu_item;
-
+
/* If this is a faked enter (see gtk_menu_motion_notify), 'widget'
* will not correspond to the event widget's parent. Check to see
* if we are in the parent's navigation region.
@@ -1213,6 +1619,9 @@ gtk_menu_enter_notify (GtkWidget
gtk_menu_navigating_submenu (GTK_MENU (menu_item->parent), event->x_root, event->y_root))
return TRUE;
+ if (widget && GTK_IS_MENU(widget))
+ gtk_menu_handle_scrolling (GTK_MENU(widget));
+
return GTK_WIDGET_CLASS (parent_class)->enter_notify_event (widget, event);
}
@@ -1223,13 +1632,15 @@ gtk_menu_leave_notify (GtkWidget
GtkMenuShell *menu_shell;
GtkMenu *menu;
GtkMenuItem *menu_item;
- GtkWidget *event_widget;
+ GtkWidget *event_widget;
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root))
return TRUE;
+
+ gtk_menu_handle_scrolling (menu);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
@@ -1416,12 +1827,18 @@ gtk_menu_position (GtkMenu *menu)
GtkWidget *widget;
GtkRequisition requisition;
gint x, y;
+ gint screen_width;
+ gint screen_height;
+ gint scroll_pixels;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
+ screen_width = gdk_screen_width ();
+ screen_height = gdk_screen_height ();
+
gdk_window_get_pointer (NULL, &x, &y, NULL);
/* We need the requisition to figure out the right place to
@@ -1430,21 +1847,56 @@ gtk_menu_position (GtkMenu *menu)
* the requisition won't have been recomputed yet.
*/
gtk_widget_size_request (widget, &requisition);
-
+
+ scroll_pixels = -1;
if (menu->position_func)
- (* menu->position_func) (menu, &x, &y, menu->position_func_data);
+ (* menu->position_func) (menu, &x, &y, &scroll_pixels, menu->position_func_data);
else
{
- gint screen_width;
- gint screen_height;
-
- screen_width = gdk_screen_width ();
- screen_height = gdk_screen_height ();
-
x = CLAMP (x - 2, 0, MAX (0, screen_width - requisition.width));
y = CLAMP (y - 2, 0, MAX (0, screen_height - requisition.height));
}
+ if (y<0)
+ {
+ requisition.height += y;
+ y = 0;
+ }
+
+ if (y + requisition.height > screen_height)
+ {
+ requisition.height -= y + requisition.height - screen_height;
+ }
+
+ if (scroll_pixels >= 0)
+ {
+ GtkWidget *child;
+ GtkRequisition requisition;
+ GList *children;
+ gint ypos;
+ guint pos;
+
+ pos = 0;
+ ypos = 0;
+ children = GTK_MENU_SHELL (menu)->children;
+ while (children && (ypos < scroll_pixels))
+ {
+ child = children->data;
+
+ if (GTK_WIDGET_VISIBLE (child))
+ {
+ gtk_widget_get_child_requisition (child, &requisition);
+ ypos += requisition.height;
+ }
+
+ children = children->next;
+ pos++;
+ }
+ menu->first_item = pos;
+ }
+
+
+
/* FIXME: The MAX() here is because gtk_widget_set_uposition
* is broken. Once we provide an alternate interface that
* allows negative values, then we can remove them.
@@ -1452,8 +1904,219 @@ gtk_menu_position (GtkMenu *menu)
gtk_widget_set_uposition (GTK_MENU_SHELL (menu)->active ?
menu->toplevel : menu->tearoff_window,
MAX (x, 0), MAX (y, 0));
+ gtk_widget_set_usize (GTK_MENU_SHELL (menu)->active ?
+ menu->toplevel : menu->tearoff_window,
+ -1, requisition.height);
}
+static void
+gtk_menu_scroll_to (GtkMenu *menu,
+ guint position)
+{
+ GtkWidget *widget;
+ GtkWidget *child;
+ GList *children;
+ GtkRequisition child_requisition;
+ guint offset;
+ guint i;
+ gint x, y;
+ guint view_width, view_height;
+ guint item_height;
+ gint border_width;
+ gboolean last_visible;
+ gint n_children;
+
+ if (position < 0)
+ position = 0;
+
+ n_children = g_list_length (GTK_MENU_SHELL (menu)->children);
+ if (position >= n_children)
+ position = n_children - 1;
+
+ offset = 0;
+ item_height = 0;
+ i = 0;
+ children = GTK_MENU_SHELL (menu)->children;
+ while (children)
+ {
+ child = children->data;
+ children = children->next;
+
+ if (GTK_WIDGET_VISIBLE (child))
+ {
+ gtk_widget_size_request (child, &child_requisition);
+ item_height += child_requisition.height;
+ if (i < position)
+ offset += child_requisition.height;
+ }
+ i++;
+ }
+
+ widget = GTK_WIDGET (menu);
+ border_width = GTK_CONTAINER (menu)->border_width;
+
+ /* Scroll the menu: */
+ gdk_window_move (menu->item_window, 0, -offset);
+
+ /* Move/resize the viewport according to arrows: */
+ gdk_window_get_size (widget->window, &view_width, &view_height);
+
+ view_height -= border_width * 2 + widget->style->ythickness * 2;
+
+ last_visible = menu->upper_arrow_visible;
+ menu->upper_arrow_visible = (position > 0);
+
+ if (menu->upper_arrow_visible)
+ view_height -= MENU_SCROLL_ARROW_HEIGHT;
+
+ if ( (last_visible != menu->upper_arrow_visible) &&
+ !menu->upper_arrow_visible)
+ {
+ menu->upper_arrow_prelight = FALSE;
+
+ /* If we hid the upper arrow, possibly remove timeout */
+ if ((menu->scrolling_direction < 0) && menu->timeout_id)
+ {
+ g_source_remove (menu->timeout_id);
+ menu->timeout_id = 0;
+ menu->scrolling_direction = 0;
+ }
+ }
+
+ last_visible = menu->lower_arrow_visible;
+ menu->lower_arrow_visible = (item_height - offset > view_height);
+
+ if (menu->lower_arrow_visible)
+ view_height -= MENU_SCROLL_ARROW_HEIGHT;
+
+ if ( (last_visible != menu->lower_arrow_visible) &&
+ !menu->lower_arrow_visible)
+ {
+ menu->lower_arrow_prelight = FALSE;
+
+ /* If we hid the lower arrow, possibly remove timeout */
+ if ((menu->scrolling_direction > 0) && menu->timeout_id)
+ {
+ g_source_remove (menu->timeout_id);
+ menu->timeout_id = 0;
+ menu->scrolling_direction = 0;
+ }
+ }
+
+ x = border_width + widget->style->xthickness;
+ y = border_width + widget->style->ythickness;
+
+ if (menu->upper_arrow_visible)
+ y += MENU_SCROLL_ARROW_HEIGHT;
+
+ gdk_window_move_resize (menu->view_window,
+ x,
+ y,
+ view_width,
+ view_height);
+
+ menu->first_item = position;
+}
+
+static void
+gtk_menu_select_item (GtkMenuShell *menu_shell,
+ GtkWidget *menu_item)
+{
+ GtkMenu *menu;
+ GtkWidget *child;
+ GList *children;
+ GtkRequisition child_requisition;
+ gint child_offset, child_height;
+ gint width, height;
+ gint x, y;
+ guint pos;
+ gint arrow_height;
+
+ g_return_if_fail (menu_shell != NULL);
+ g_return_if_fail (GTK_IS_MENU (menu_shell));
+
+ menu = GTK_MENU (menu_shell);
+
+ /* We need to check if the selected item fully visible.
+ * If not we need to scroll the menu so that it becomes fully
+ * visible.
+ */
+
+ pos = 0;
+ child = NULL;
+ child_offset = 0;
+ child_height = 0;
+ children = menu_shell->children;
+ while (children)
+ {
+ child = children->data;
+ children = children->next;
+
+ if (GTK_WIDGET_VISIBLE (child))
+ {
+ gtk_widget_size_request (child, &child_requisition);
+ child_offset += child_height;
+ child_height = child_requisition.height;
+ }
+
+ if (child == menu_item)
+ break;
+
+ pos++;
+ }
+
+ if (child == menu_item)
+ {
+ gdk_window_get_position (menu->item_window, &x, &y);
+ y = -y;
+ gdk_window_get_size (GTK_WIDGET (menu)->window, &width, &height);
+
+ if (child_offset < y)
+ gtk_menu_scroll_to (menu, pos);
+ else
+ {
+ arrow_height = 0;
+ if (menu->upper_arrow_visible)
+ arrow_height += MENU_SCROLL_ARROW_HEIGHT;
+ if (menu->lower_arrow_visible)
+ arrow_height += MENU_SCROLL_ARROW_HEIGHT;
+ if (child_offset + child_height > y + height - arrow_height)
+ {
+ pos = 0;
+ y = 0;
+ children = menu_shell->children;
+ while (children)
+ {
+ child = children->data;
+ children = children->next;
+
+ if (GTK_WIDGET_VISIBLE (child))
+ {
+ arrow_height = 0;
+ if (pos > 0)
+ arrow_height += MENU_SCROLL_ARROW_HEIGHT;
+ if (children)
+ arrow_height += MENU_SCROLL_ARROW_HEIGHT;
+ if (y + height >= child_offset + child_height + arrow_height)
+ break;
+ gtk_widget_size_request (child, &child_requisition);
+ y += child_requisition.height;
+ }
+
+ pos++;
+ }
+
+
+ gtk_menu_scroll_to (menu, pos);
+ }
+ }
+
+ }
+
+ GTK_MENU_SHELL_CLASS (parent_class)->select_item (menu_shell, menu_item);
+}
+
+
/* Reparent the menu, taking care of the refcounting
*/
static void
@@ -1477,7 +2140,6 @@ gtk_menu_reparent (GtkMenu *menu,
}
else
gtk_widget_reparent (GTK_WIDGET (menu), new_parent);
- gtk_widget_set_usize (new_parent, -1, -1);
if (was_floating)
GTK_OBJECT_SET_FLAGS (object, GTK_FLOATING);
Index: gtkmenu.h
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkmenu.h,v
retrieving revision 1.22
diff -u -p -r1.22 gtkmenu.h
--- gtkmenu.h 2000/09/02 02:43:50 1.22
+++ gtkmenu.h 2000/10/10 15:36:27
@@ -37,7 +37,6 @@
extern "C" {
#endif /* __cplusplus */
-
#define GTK_TYPE_MENU (gtk_menu_get_type ())
#define GTK_MENU(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_MENU, GtkMenu))
#define GTK_MENU_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_MENU, GtkMenuClass))
@@ -52,6 +51,7 @@ typedef struct _GtkMenuClass GtkMenuCla
typedef void (*GtkMenuPositionFunc) (GtkMenu *menu,
gint *x,
gint *y,
+ gint *scroll_offset,
gpointer user_data);
typedef void (*GtkMenuDetachFunc) (GtkWidget *attach_widget,
GtkMenu *menu);
@@ -62,7 +62,7 @@ struct _GtkMenu
GtkWidget *parent_menu_item;
GtkWidget *old_active_menu_item;
-
+
GtkAccelGroup *accel_group;
GtkMenuPositionFunc position_func;
gpointer position_func_data;
@@ -74,6 +74,13 @@ struct _GtkMenu
GtkWidget *toplevel;
GtkWidget *tearoff_window;
+ GdkWindow *view_window;
+ GdkWindow *item_window;
+
+ guint first_item;
+ gint scrolling_direction;
+ guint timeout_id;
+
/* When a submenu of this menu is popped up, motion in this
* region is ignored
*/
@@ -82,6 +89,12 @@ struct _GtkMenu
guint needs_destruction_ref_count : 1;
guint torn_off : 1;
+
+ guint upper_arrow_visible : 1;
+ guint lower_arrow_visible : 1;
+ guint upper_arrow_prelight : 1;
+ guint lower_arrow_prelight : 1;
+
};
struct _GtkMenuClass
Index: gtkmenuitem.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkmenuitem.c,v
retrieving revision 1.41
diff -u -p -r1.41 gtkmenuitem.c
--- gtkmenuitem.c 2000/07/26 11:32:45 1.41
+++ gtkmenuitem.c 2000/10/10 15:36:27
@@ -67,6 +67,7 @@ static void gtk_menu_item_popup_submenu
static void gtk_menu_item_position_menu (GtkMenu *menu,
gint *x,
gint *y,
+ gint *scroll_offset,
gpointer user_data);
static void gtk_menu_item_show_all (GtkWidget *widget);
static void gtk_menu_item_hide_all (GtkWidget *widget);
@@ -668,6 +669,7 @@ static void
gtk_menu_item_position_menu (GtkMenu *menu,
gint *x,
gint *y,
+ gint *scroll_offset,
gpointer user_data)
{
GtkMenuItem *menu_item;
@@ -702,9 +704,10 @@ gtk_menu_item_position_menu (GtkMenu *m
ty += GTK_WIDGET (menu_item)->allocation.height;
else if ((ty - theight) >= 0)
ty -= theight;
- else
+ else if (screen_height - (ty + GTK_WIDGET (menu_item)->allocation.height) > ty)
ty += GTK_WIDGET (menu_item)->allocation.height;
-
+ else
+ ty -= theight;
break;
case GTK_LEFT_RIGHT:
@@ -738,14 +741,16 @@ gtk_menu_item_position_menu (GtkMenu *m
ty += GTK_WIDGET (menu_item)->allocation.height / 4;
+ /* If the height of the menu doesn't fit we move it upward. */
+ ty = CLAMP (ty, 0, MAX (0, screen_height - theight));
break;
}
- /* If we have negative, tx, ty here it is because we can't get
- * the menu all the way on screen. Favor the upper-left portion.
+ /* If we have negative, tx, here it is because we can't get
+ * the menu all the way on screen. Favor the left portion.
*/
*x = CLAMP (tx, 0, MAX (0, screen_width - twidth));
- *y = CLAMP (ty, 0, MAX (0, screen_height - theight));
+ *y = ty;
}
void
Index: gtkmenushell.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkmenushell.c,v
retrieving revision 1.33
diff -u -p -r1.33 gtkmenushell.c
--- gtkmenushell.c 2000/07/26 11:32:45 1.33
+++ gtkmenushell.c 2000/10/10 15:36:27
@@ -135,6 +135,8 @@ static gint gtk_menu_shell_is_item
static GtkWidget *gtk_menu_shell_get_item (GtkMenuShell *menu_shell,
GdkEvent *event);
static GtkType gtk_menu_shell_child_type (GtkContainer *container);
+static void gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
+ GtkWidget *menu_item);
static void gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell);
static void gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell,
@@ -246,6 +248,7 @@ gtk_menu_shell_class_init (GtkMenuShellC
klass->move_current = gtk_real_menu_shell_move_current;
klass->activate_current = gtk_real_menu_shell_activate_current;
klass->cancel = gtk_real_menu_shell_cancel;
+ klass->select_item = gtk_menu_shell_real_select_item;
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set,
@@ -775,6 +778,24 @@ gtk_menu_shell_get_item (GtkMenuShell *m
void
gtk_menu_shell_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
+{
+ GtkMenuShellClass *class;
+
+ g_return_if_fail (menu_shell != NULL);
+ g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
+ g_return_if_fail (menu_item != NULL);
+ g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
+
+ class = GTK_MENU_SHELL_GET_CLASS (menu_shell);
+
+ if (class->select_item)
+ class->select_item (menu_shell, menu_item);
+}
+
+
+static void
+gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
+ GtkWidget *menu_item)
{
g_return_if_fail (menu_shell != NULL);
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
Index: gtkmenushell.h
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkmenushell.h,v
retrieving revision 1.10
diff -u -p -r1.10 gtkmenushell.h
--- gtkmenushell.h 2000/08/30 00:33:37 1.10
+++ gtkmenushell.h 2000/10/10 15:36:27
@@ -81,6 +81,8 @@ struct _GtkMenuShellClass
void (*activate_current) (GtkMenuShell *menu_shell,
gboolean force_hide);
void (*cancel) (GtkMenuShell *menu_shell);
+ void (*select_item) (GtkMenuShell *menu_shell,
+ GtkWidget *menu_item);
};
Index: gtkoptionmenu.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkoptionmenu.c,v
retrieving revision 1.32
diff -u -p -r1.32 gtkoptionmenu.c
--- gtkoptionmenu.c 2000/07/26 11:32:45 1.32
+++ gtkoptionmenu.c 2000/10/10 15:36:27
@@ -65,6 +65,7 @@ static void gtk_option_menu_calc_size
static void gtk_option_menu_position (GtkMenu *menu,
gint *x,
gint *y,
+ gint *scroll_offset,
gpointer user_data);
static void gtk_option_menu_show_all (GtkWidget *widget);
static void gtk_option_menu_hide_all (GtkWidget *widget);
@@ -650,6 +651,7 @@ static void
gtk_option_menu_position (GtkMenu *menu,
gint *x,
gint *y,
+ gint *scroll_offset,
gpointer user_data)
{
GtkOptionMenu *option_menu;
@@ -657,9 +659,7 @@ gtk_option_menu_position (GtkMenu *menu
GtkWidget *child;
GtkRequisition requisition;
GList *children;
- gint shift_menu;
gint screen_width;
- gint screen_height;
gint menu_xpos;
gint menu_ypos;
gint width;
@@ -702,34 +702,23 @@ gtk_option_menu_position (GtkMenu *menu
children = children->next;
}
+
screen_width = gdk_screen_width ();
- screen_height = gdk_screen_height ();
-
- shift_menu = FALSE;
- if (menu_ypos < 0)
- {
- menu_ypos = 0;
- shift_menu = TRUE;
- }
- else if ((menu_ypos + height) > screen_height)
- {
- menu_ypos -= ((menu_ypos + height) - screen_height);
- shift_menu = TRUE;
- }
-
- if (shift_menu)
- {
- if ((menu_xpos + GTK_WIDGET (option_menu)->allocation.width + width) <= screen_width)
- menu_xpos += GTK_WIDGET (option_menu)->allocation.width;
- else
- menu_xpos -= width;
- }
-
+
if (menu_xpos < 0)
menu_xpos = 0;
else if ((menu_xpos + width) > screen_width)
menu_xpos -= ((menu_xpos + width) - screen_width);
+ if (menu_ypos < 0)
+ {
+ *scroll_offset = -menu_ypos;
+ menu_ypos = 0;
+
+ }
+ else
+ *scroll_offset = 0;
+
*x = menu_xpos;
*y = menu_ypos;
}
[
Date Prev][
Date Next] [
Thread Prev][
Thread Next]
[
Thread Index]
[
Date Index]
[
Author Index]
