Hi, On Tue, 2017-10-03 at 20:13 +0200, infirit wrote: > See bug 765167 [1] it has an example in python how you can still use a > surface in the GtkIconView. You should be able to translate this pretty > easily to C/C++. > > ~infirit > > [1] https://bugzilla.gnome.org/show_bug.cgi?id=765167#c5. Thanks a lot for the pointer. I was able to translate this into Gtkmm. This fixes my issue, although I wish GTK would implement a proper method for doing this. This is the code, if anyone is interested: class MainWindowIconView : public Gtk::IconView { public: Gtk::CellRendererPixbuf cell_renderer_pixbuf; ///< Cell renderer for icons. Gtk::TreeModelColumn<Glib::RefPtr<Gdk::Pixbuf> > col_pixbuf; ///< Model column // ... MainWindowIconView() { // ... columns.add(col_pixbuf); // For high quality rendering with GDK_SCALE=2 this->pack_start(cell_renderer_pixbuf, false); this->set_cell_data_func(cell_renderer_pixbuf, sigc::mem_fun(this, &MainWindowIconView::on_cell_data_render)); // ... } /// Cell data renderer (needed for high quality icons in GDK_SCALE=2). /// We have to use Cairo surfaces, because pixbufs are scaled by GtkIconView. void on_cell_data_render(const Gtk::TreeModel::const_iterator& iter) { Gtk::TreeRow row = *iter; Glib::RefPtr<Gdk::Pixbuf> pixbuf = row[col_pixbuf]; // Gtkmm property_surface() doesn't work, so use plain C. cairo_surface_t* surface = gdk_cairo_surface_create_from_pixbuf( pixbuf->gobj(), get_scale_factor(), get_window()->gobj()); g_object_set(G_OBJECT(cell_renderer_pixbuf.gobj()), "surface", surface, NULL); cairo_surface_destroy(surface); } // ... }; Thanks, Alexander _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list
