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Implement rubberband scrolling (needs to be done for the horizontal

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2004-05-31  Anders Carlsson  <andersca@gnome.org>

	* libegg/iconlist/eggiconlist.c (egg_icon_list_motion):
	Implement rubberband scrolling (needs to be done for the
	horizontal scrollbar too)
This commit is contained in:
Anders Carlsson 2004-05-31 19:44:01 +00:00 committed by Anders Carlsson
parent 53684f70cf
commit 8611df01ac
1 changed files with 67 additions and 3 deletions
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70
gtk/gtkiconview.c
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@ -82,7 +82,11 @@ struct _EggIconListPrivate
gboolean rubberbanding;
gint rubberband_x1, rubberband_y1;
gint rubberband_x2, rubberband_y2;
guint scroll_timeout_id;
gint scroll_value_diff;
gint event_last_x, event_last_y;
EggIconListItem *cursor_item;
char *typeahead_string;
@ -512,9 +516,14 @@ egg_icon_list_finalize (GObject *object)
icon_list = EGG_ICON_LIST (object);
/* FIXME: Put in destroy */
if (icon_list->priv->layout_idle_id != 0)
g_source_remove (icon_list->priv->layout_idle_id);
if (icon_list->priv->scroll_timeout_id != 0)
g_source_remove (icon_list->priv->scroll_timeout_id);
g_free (icon_list->priv);
(G_OBJECT_CLASS (parent_class)->finalize) (object);
@ -752,18 +761,67 @@ egg_icon_list_expose (GtkWidget *widget,
return TRUE;
}
static gboolean
scroll_timeout (gpointer data)
{
EggIconList *icon_list;
gdouble value;
icon_list = data;
value = MIN (icon_list->priv->vadjustment->value +
icon_list->priv->scroll_value_diff,
icon_list->priv->vadjustment->upper -
icon_list->priv->vadjustment->page_size);
gtk_adjustment_set_value (icon_list->priv->vadjustment,
value);
rubberbanding (icon_list);
return TRUE;
}
static gboolean
egg_icon_list_motion (GtkWidget *widget,
GdkEventMotion *event)
{
EggIconList *icon_list;
gint abs_y;
icon_list = EGG_ICON_LIST (widget);
egg_icon_list_maybe_begin_dragging_items (icon_list, event);
if (icon_list->priv->rubberbanding)
rubberbanding (widget);
{
rubberbanding (widget);
abs_y = event->y - icon_list->priv->height *
(icon_list->priv->vadjustment->value /
(icon_list->priv->vadjustment->upper -
icon_list->priv->vadjustment->lower));
if (abs_y < 0 || abs_y > widget->allocation.height)
{
if (icon_list->priv->scroll_timeout_id == 0)
icon_list->priv->scroll_timeout_id = g_timeout_add (30, scroll_timeout, icon_list);
if (abs_y < 0)
icon_list->priv->scroll_value_diff = abs_y;
else
icon_list->priv->scroll_value_diff = abs_y - widget->allocation.height;
icon_list->priv->event_last_x = event->x;
icon_list->priv->event_last_y = event->y;
}
else if (icon_list->priv->scroll_timeout_id != 0)
{
g_source_remove (icon_list->priv->scroll_timeout_id);
icon_list->priv->scroll_timeout_id = 0;
}
}
return TRUE;
}
@ -872,6 +930,12 @@ egg_icon_list_button_release (GtkWidget *widget,
egg_icon_list_stop_rubberbanding (icon_list);
if (icon_list->priv->scroll_timeout_id != 0)
{
g_source_remove (icon_list->priv->scroll_timeout_id);
icon_list->priv->scroll_timeout_id = 0;
}
return TRUE;
}