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made SetFirstItem() work again (patch 1445170)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37934 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2006-03-09 13:47:25 +00:00
parent 0faa7620a5
commit 28354d90fc
1 changed files with 13 additions and 32 deletions
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45
src/gtk/listbox.cpp
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@ -972,41 +972,22 @@ void wxListBox::DoSetFirstItem( int n )
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_treeview))
return;
// terribly efficient (RN:???)
// RN: Note that evidently the vadjustment property "vadjustment" from
// GtkTreeView is different from the "gtk-vadjustment"...
// (i.e. gtk_tree_view_get_vadjustment)
const gchar *vadjustment_key = "gtk-vadjustment";
guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
GtkTreeIter iter;
gtk_tree_model_iter_nth_child(
GTK_TREE_MODEL(m_liststore),
&iter,
NULL, //NULL = parent = get first
n
);
GtkAdjustment *adjustment =
(GtkAdjustment*) g_object_get_qdata(G_OBJECT (m_treeview), vadjustment_key_id);
wxCHECK_RET( adjustment, wxT("invalid listbox code") );
GtkTreePath* path = gtk_tree_model_get_path(
GTK_TREE_MODEL(m_liststore), &iter);
// Get the greater of the item heights from each column
gint cellheight = 0, cellheightcur;
GList* columnlist = gtk_tree_view_get_columns(m_treeview);
GList* curlist = columnlist;
// Scroll to the desired cell (0.0 == topleft alignment)
gtk_tree_view_scroll_to_cell(m_treeview, path, NULL,
TRUE, 0.0f, 0.0f);
while(curlist)
{
gtk_tree_view_column_cell_get_size(
GTK_TREE_VIEW_COLUMN(curlist->data),
NULL, NULL, NULL, NULL,
&cellheightcur);
cellheight = cellheightcur > cellheight ?
cellheightcur : cellheight;
curlist = curlist->next;
}
g_list_free(columnlist);
float y = (float) (cellheight * n);
if (y > adjustment->upper - adjustment->page_size)
y = adjustment->upper - adjustment->page_size;
gtk_adjustment_set_value( adjustment, y );
gtk_tree_path_free(path);
}
// ----------------------------------------------------------------------------