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#include "treeview_cell_tooltips.h"
#include <map>
namespace gui
{
namespace
{
Glib::Quark treeview_tooltip_signal_connection_property("aptitude-treeview-cell-tooltip-signal-connection");
Glib::Quark treeview_cell_tooltip_property("aptitude-treeview-cell-tooltip");
/** \brief A state object that manages the tooltip of a view column.
*
* This will have the same lifetime as the associated column
* object; its lifetime is managed by set_column_tooltip() and
* column_tooltip_destroy_notify().
*/
class treeview_cell_tooltip
{
bool is_markup;
Gtk::TreeModelColumn<Glib::ustring> tooltip_column;
public:
treeview_cell_tooltip(bool _is_markup, Gtk::TreeModelColumn<Glib::ustring> _tooltip_column)
: is_markup(_is_markup),
tooltip_column(_tooltip_column)
{
}
/** \brief Set up the properties of the given tooltip object
* to actually display this tooltip.
*
* \param tooltip The tooltip to initialize.
* \param row The tree model row to draw tooltip values from.
*
* \return \b true if there is a tooltip corresponding to this column
* in this row.
*/
bool setup_tooltip(const Glib::RefPtr<Gtk::Tooltip> &tooltip,
const Gtk::TreeModel::Row &row)
{
const Glib::ustring text(row[tooltip_column]);
if(text.empty())
return false;
if(is_markup)
tooltip->set_markup(text);
else
tooltip->set_text(text);
return true;
}
};
// Routines to manage the tooltip property on columns.
void cell_tooltip_destroy_notify(gpointer data)
{
treeview_cell_tooltip *tooltip =
static_cast<treeview_cell_tooltip *>(data);
delete tooltip;
}
treeview_cell_tooltip *get_column_tooltip(Gtk::TreeViewColumn *view_column)
{
return static_cast<treeview_cell_tooltip *>(view_column->get_data(treeview_cell_tooltip_property));
}
void set_column_tooltip(Gtk::TreeViewColumn *view_column,
treeview_cell_tooltip *tooltip)
{
view_column->set_data(treeview_cell_tooltip_property, tooltip,
&cell_tooltip_destroy_notify);
}
bool do_signal_query_tooltip(int x, int y,
bool keyboard_tooltip,
const Glib::RefPtr<Gtk::Tooltip> &tooltip,
Gtk::TreeView &treeview)
{
if(keyboard_tooltip)
// We have no X or Y; no tooltip for you! \todo It might be
// annoying, but we *could* figure out which cell is focused
// and use that fact.
return false;
// UNDOCUMENTED -- contrary to the documentation, the
// coordinates that get_path_at_post wants are *bin*
// coordinates, not widget coordinates.
int bin_window_x, bin_window_y;
treeview.convert_widget_to_bin_window_coords(x, y, bin_window_x, bin_window_y);
// Find the current column.
Gtk::TreeModel::Path path;
Gtk::TreeViewColumn *column;
int cell_x, cell_y;
if(!treeview.get_path_at_pos(bin_window_x, bin_window_y, path, column, cell_x, cell_y))
return false;
treeview_cell_tooltip *cell_tooltip(get_column_tooltip(column));
if(cell_tooltip == NULL)
return false;
Gtk::TreeModel::iterator iter = treeview.get_model()->get_iter(path);
Gtk::TreeModel::Row row(*iter);
// Make sure the tooltip appears in the right place.
treeview.set_tooltip_cell(tooltip,
&path,
column,
NULL);
return cell_tooltip->setup_tooltip(tooltip, row);
}
}
// Properties managing the query-tooltip signal connection property
// on tree-views.
sigc::connection *get_treeview_tooltip_signal_connection(Gtk::TreeView *treeview)
{
void *rval = treeview->get_data(treeview_tooltip_signal_connection_property);
return static_cast<sigc::connection *>(rval);
}
void tooltip_signal_connection_property_destroy(void *data)
{
sigc::connection *conn = static_cast<sigc::connection *>(data);
if(conn != NULL)
{
conn->disconnect();
delete conn;
}
}
void set_treeview_tooltip_signal_connection(Gtk::TreeView *treeview,
const sigc::connection &tooltip_signal_connection)
{
treeview->set_data(treeview_tooltip_signal_connection_property,
static_cast<void *>(new sigc::connection(tooltip_signal_connection)),
&tooltip_signal_connection_property_destroy);
}
void clear_treeview_tooltip_signal_connection(Gtk::TreeView *treeview)
{
treeview->set_data(treeview_tooltip_signal_connection_property, NULL);
}
void enable_column_tooltips(Gtk::TreeView *treeview)
{
if(get_treeview_tooltip_signal_connection(treeview) == NULL)
{
sigc::connection conn = treeview->signal_query_tooltip().connect(sigc::bind(sigc::ptr_fun(&do_signal_query_tooltip),
sigc::ref(*treeview)));
treeview->property_has_tooltip() = true;
set_treeview_tooltip_signal_connection(treeview, conn);
}
}
void disable_column_tooltips(Gtk::TreeView *treeview)
{
clear_treeview_tooltip_signal_connection(treeview);
}
void set_text_tooltip(Gtk::TreeView *treeview,
Gtk::TreeViewColumn *view_column,
const Gtk::TreeModelColumn<Glib::ustring> &model_column)
{
enable_column_tooltips(treeview);
set_column_tooltip(view_column,
new treeview_cell_tooltip(false, model_column));
}
void set_markup_tooltip(Gtk::TreeView *treeview,
Gtk::TreeViewColumn *view_column,
const Gtk::TreeModelColumn<Glib::ustring> &model_column)
{
enable_column_tooltips(treeview);
set_column_tooltip(view_column,
new treeview_cell_tooltip(true, model_column));
}
}
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