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Viewing changes to src/View/IconView.vala

fixes visual glitches in the text rendering:
* clipping of the focus rectangle in icon view
* Incorrect alignment in ListView with RTL language
* Reduce excess vertical spacing of icons with short names

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Lines of Context:
src/View/IconView.vala
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            tree.set_selection_mode (Gtk.SelectionMode.MULTIPLE);
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            tree.set_columns (-1);
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            tree.set_reorderable (false);
 
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            tree.set_item_padding (3);
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            name_renderer = new Marlin.TextRenderer (Marlin.ViewMode.ICON);
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            set_up_name_renderer ();
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        }
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        public override void change_zoom_level () {
 
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            int spacing = (int)((double)icon_size * (0.3 - zoom_level * 0.03));
 
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            int item_width = (int)((double)icon_size * (2.5 - zoom_level * 0.2));
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            if (tree != null) {
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                tree.set_column_spacing ((int)((double)icon_size * (0.3 - zoom_level * 0.03)));
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                tree.set_item_width ((int)((double)icon_size * (2.5 - zoom_level * 0.2)));
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                name_renderer.set_property ("wrap-width", tree.get_item_width ());
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                name_renderer.set_property ("zoom-level", zoom_level);
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                base.change_zoom_level ();
 
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                tree.set_column_spacing (spacing);
 
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                tree.set_item_width (item_width);
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            }
 
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            name_renderer.item_width = item_width;
 
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            name_renderer.set_property ("zoom-level", zoom_level);
 
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            base.change_zoom_level ();
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        }
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        public override GLib.List<Gtk.TreePath> get_selected_paths () {