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an implementation of wxListBox::SetFirstItem() which seems to work

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2000-10-20 15:31:41 +00:00
parent 820f05f0c5
commit 9ef6ff8c4d
2 changed files with 120 additions and 50 deletions
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39
src/gtk/listbox.cpp
View File

@@ -778,9 +778,44 @@ void wxListBox::SetSelection( int n, bool select )
GtkEnableEvents();
}
void wxListBox::DoSetFirstItem( int WXUNUSED(n) )
void wxListBox::DoSetFirstItem( int n )
{
wxFAIL_MSG(wxT("wxListBox::SetFirstItem not implemented"));
wxCHECK_RET( m_list, wxT("invalid listbox") );
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
return;
// terribly efficient
const gchar *vadjustment_key = "gtk-vadjustment";
guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
GtkAdjustment *adjustment =
(GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
wxCHECK_RET( adjustment, wxT("invalid listbox code") );
GList *target = g_list_nth( m_list->children, n );
wxCHECK_RET( target, wxT("invalid listbox index") );
GtkWidget *item = GTK_WIDGET(target->data);
wxCHECK_RET( item, wxT("invalid listbox code") );
// find the last item before this one which is already realized
size_t nItemsBefore;
for ( nItemsBefore = 0; item && (item->allocation.y == -1); nItemsBefore++ )
{
target = target->prev;
if ( !target )
{
// nothing we can do if there are no allocated items yet
return;
}
item = GTK_WIDGET(target->data);
}
gtk_adjustment_set_value(adjustment,
item->allocation.y +
nItemsBefore*item->allocation.height);
}
// ----------------------------------------------------------------------------

39
src/gtk1/listbox.cpp
View File

@@ -778,9 +778,44 @@ void wxListBox::SetSelection( int n, bool select )
GtkEnableEvents();
}
void wxListBox::DoSetFirstItem( int WXUNUSED(n) )
void wxListBox::DoSetFirstItem( int n )
{
wxFAIL_MSG(wxT("wxListBox::SetFirstItem not implemented"));
wxCHECK_RET( m_list, wxT("invalid listbox") );
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
return;
// terribly efficient
const gchar *vadjustment_key = "gtk-vadjustment";
guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
GtkAdjustment *adjustment =
(GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
wxCHECK_RET( adjustment, wxT("invalid listbox code") );
GList *target = g_list_nth( m_list->children, n );
wxCHECK_RET( target, wxT("invalid listbox index") );
GtkWidget *item = GTK_WIDGET(target->data);
wxCHECK_RET( item, wxT("invalid listbox code") );
// find the last item before this one which is already realized
size_t nItemsBefore;
for ( nItemsBefore = 0; item && (item->allocation.y == -1); nItemsBefore++ )
{
target = target->prev;
if ( !target )
{
// nothing we can do if there are no allocated items yet
return;
}
item = GTK_WIDGET(target->data);
}
gtk_adjustment_set_value(adjustment,
item->allocation.y +
nItemsBefore*item->allocation.height);
}
// ----------------------------------------------------------------------------