add hovering/show click functionality to ArdourButton

[ardour.git] / gtk2_ardour / port_matrix_column_labels.cc

diff --git a/gtk2_ardour/port_matrix_column_labels.cc b/gtk2_ardour/port_matrix_column_labels.cc
index 091eb0f9daf0375972345d84f8a8cb34a5494050..1cdf510c59606a0b86d3344f0a503155e4b067f0 100644 (file)
--- a/gtk2_ardour/port_matrix_column_labels.cc
+++ b/gtk2_ardour/port_matrix_column_labels.cc
@@ -39,9 +39,8 @@ PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrix* m, PortMatrixBody* b
 void
 PortMatrixColumnLabels::compute_dimensions ()
 {
-       GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, gdk_visual_get_depth (gdk_visual_get_system ()));
-       gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
-       cairo_t* cr = gdk_cairo_create (pm);
+       cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 200, 200);
+       cairo_t* cr = cairo_create (surface);
 
        /* width of the longest bundle name */
        _longest_bundle_name = 0;
@@ -95,7 +94,7 @@ PortMatrixColumnLabels::compute_dimensions ()
        }
 
        cairo_destroy (cr);
-       g_object_unref (pm);
+       cairo_surface_destroy (surface);
 
        /* height of the whole thing */