/*
	Copyright (C) 2012 2013 2014 2015 Johan Mattsson

	This library is free software; you can redistribute it and/or modify 
	it under the terms of the GNU Lesser General Public License as 
	published by the Free Software Foundation; either version 3 of the 
	License, or (at your option) any later version.

	This library is distributed in the hope that it will be useful, but 
	WITHOUT ANY WARRANTY; without even the implied warranty of 
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
	Lesser General Public License for more details.
*/

using Cairo;
using Math;

namespace BirdFont {

public class DrawingTools : ToolCollection  {
	GlyphCanvas glyph_canvas;
	
	public Gee.ArrayList<Expander> expanders = new Gee.ArrayList<Expander> ();
	
	public static Expander draw_tools { get; set; }
	public static Expander grid_expander { get; set; }
	public static Expander shape_tools { get; set; }
	public static Expander draw_tool_modifiers { get; set; }
	public static Expander layer_tools { get; set; }
	public static Expander layer_settings { get; set; }
	public static Expander stroke_expander { get; set; }
	public static Expander zoombar_tool { get; set; }
	public static Expander guideline_tools { get; set; }

	public static Expander font_name { get; set; }
	public static Expander key_tools { get; set; }
	public static Expander test_tools { get; set; }
	public static Expander grid { get; set; }
			
	public static PointType point_type = PointType.DOUBLE_CURVE;
	
	public static Tool add_stroke { get; set; }
	public static SpinButton object_stroke;
	Tool outline;
	
	public static MoveTool move_tool { get; set; }
	public static PenTool pen_tool;

	public static BezierTool bezier_tool;
	PointTool point_tool;
	public static ZoomTool zoom_tool;
	public static ResizeTool resize_tool;
	public static TrackTool track_tool;
	public static BackgroundTool move_background;
	public static Tool move_canvas;
	public static Tool add_layer;
	public static Tool show_layers;
	
	static Tool quadratic_points;
	static Tool cubic_points;
	static Tool double_points;
	static Tool convert_points;

	public static CutBackgroundTool cut_background;
	Tool show_bg;
	Tool bg_selection;
	public static SpinButton background_threshold;
	public static SpinButton background_scale;
	Tool high_contrast_background;
	public static SpinButton auto_trace_resolution;
	Tool auto_trace;
	public static SpinButton auto_trace_simplify;
	Tool delete_background;

	Tool rectangle;
	Tool circle;

	public static Tool help_lines { get; set; }
	public static Tool xheight_help_lines { get; set; }
	public static Tool background_help_lines { get; set; }
	public static GridTool show_grid { get; set; }
	public static Tool lock_grid { get; set; }
	
	SpinButton x_coordinate;
	SpinButton y_coordinate;
	SpinButton rotation;
	SpinButton width;
	SpinButton height;

	Tool tie_handles;
	Tool reflect_handle;
	Tool create_line;
	Tool close_path_tool;

	Tool delete_button;
	public Tool insert_point_on_path_tool;
	Tool undo_tool;
	Tool select_all_button;
	
	OrientationTool reverse_path_tool;
	Tool move_layer;
	Tool flip_vertical;
	Tool flip_horizontal;
	Tool full_height_tool;
	
	public ZoomBar zoom_bar;

	static Tool line_cap_butt;
	static Tool line_cap_round;
	static Tool line_cap_square;

	private Text backgrounds_headline = new Text (t_("Background Tools"));
	private Text control_points_headline = new Text (t_("Control Points"));
	private Text object_tools_headline = new Text (t_("Object Tools"));
		
	public DrawingTools (GlyphCanvas main_glyph_canvas) {
		bool selected_line;
		
		glyph_canvas = main_glyph_canvas;
		
		background_scale = new SpinButton ();
		
		draw_tools = new Expander (t_("Drawing Tools"));
		draw_tool_modifiers = new Expander (t_("Control Point"));
		layer_tools = new Expander ();
		layer_settings = new Expander (t_("Layers"));
		stroke_expander = new Expander (t_("Stroke"));
		shape_tools = new Expander (t_("Geometrical Shapes"));
		zoombar_tool = new Expander (t_("Zoom"));
		guideline_tools = new Expander (t_("Guidelines & Grid"));
		
		font_name = new Expander ();
		key_tools = new Expander (); // tools on android
		test_tools = new Expander ();
		grid = new Expander (t_("Grid Size"));
		
		grid_expander = grid;

		// font name 
		font_name.add_tool (new FontName ());

		// Draw tools
		bezier_tool = new BezierTool ("bezier_tool");
		bezier_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		draw_tools.add_tool (bezier_tool);
		
		pen_tool = new PenTool ("pen_tool");
		pen_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		draw_tools.add_tool (pen_tool);

		point_tool = new PointTool ("point_tool");
		point_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		draw_tools.add_tool (point_tool);

		zoom_tool = new ZoomTool ("zoom_tool");
		zoom_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
#if ANDROID
		Toolbox.hidden_tools.hidden_expander.add_tool (zoom_tool);
#else
		draw_tools.add_tool (zoom_tool);
#endif
		move_tool = new MoveTool ("move");
		move_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		draw_tools.add_tool (move_tool);
		
		resize_tool = new ResizeTool ("resize");
		resize_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		draw_tools.add_tool (resize_tool);
		
		track_tool = new TrackTool ("track"); // draw outline on freehand
		track_tool.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		draw_tools.add_tool (track_tool);

		move_background = new BackgroundTool ("move_background");
		move_background.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});	
		draw_tools.add_tool (move_background);

		move_canvas = new Tool ("move_canvas", t_("Move canvas") 
			+ "\n" + t_("Ctrl + Shift + Click")
			+ "\n" + t_("Space + Click") + "\n");
		move_canvas.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});	
		draw_tools.add_tool (move_canvas);
								
		// Tools on android
		// Delete key
		delete_button = new Tool ("delete_button", t_("Delete"));
		delete_button.select_action.connect ((self) => {
			TabContent.key_press (Key.DEL);
		});
		key_tools.add_tool (delete_button);
		
		// Select all points or paths
		select_all_button = new Tool ("select_all", t_("Select all points or paths"));
		select_all_button.select_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			
			if (point_tool.is_selected () 
					|| pen_tool.is_selected ()
					|| track_tool.is_selected ()) {
				pen_tool.select_all_points ();
				g.open_path ();
			} else {
				DrawingTools.move_tool.select_all_paths ();
			}
		});
		key_tools.add_tool (select_all_button);			

		// Undo
		undo_tool = new Tool ("undo_tool", t_("Undo"));
		undo_tool.select_action.connect ((self) => {
			TabContent.undo ();
		});
		key_tools.add_tool (undo_tool);
		
		bool insert_points = false;
		insert_point_on_path_tool = new Tool ("new_point_on_path", t_("Insert new points on path"));
		insert_point_on_path_tool.select_action.connect ((self) => {
			insert_points = !insert_points;
			insert_point_on_path_tool.set_selected (insert_points);
		});
		insert_point_on_path_tool.set_persistent (true);
		key_tools.add_tool (insert_point_on_path_tool);		
		
		// quadratic Bézier points
		quadratic_points = new Tool ("quadratic_points", t_("Create quadratic Bézier curves"));
		quadratic_points.select_action.connect ((self) => {
			point_type = PointType.QUADRATIC;
			Preferences.set ("point_type", "quadratic_points");
			update_type_selection ();
		});
		draw_tool_modifiers.add_tool (quadratic_points);		

		// cubic Bézier points
		cubic_points = new Tool ("cubic_points", t_("Create cubic Bézier curves"));
		cubic_points.select_action.connect ((self) => {
			point_type = PointType.CUBIC;
			Preferences.set ("point_type", "cubic_points");
			update_type_selection ();
		});
		draw_tool_modifiers.add_tool (cubic_points);

		// two quadratic points off curve points for each quadratic control point
		double_points = new Tool ("double_points", t_("Quadratic path with two line handles"));
		double_points.select_action.connect ((self) => {
			point_type = PointType.DOUBLE_CURVE;
			Preferences.set ("point_type", "double_points");
			update_type_selection ();
		});
		draw_tool_modifiers.add_tool (double_points);

		// convert point
		convert_points = new Tool ("convert_point", t_("Convert selected points"));
		convert_points.select_action.connect ((self) => {
			PenTool.convert_point_types ();
			GlyphCanvas.redraw ();
			update_type_selection ();
			PenTool.reset_stroke ();
		});
		convert_points.set_persistent (false);
		draw_tool_modifiers.add_tool (convert_points);
							
		// x coordinate
		x_coordinate = new SpinButton ("x_coordinate", t_("X coordinate"));
		x_coordinate.set_big_number (true);
		x_coordinate.set_int_value ("0.000");
		x_coordinate.set_int_step (0.1);
		x_coordinate.set_min (-999.99);
		x_coordinate.set_max (999.99);
		x_coordinate.show_icon (true);
		x_coordinate.set_persistent (false);
		x_coordinate.new_value_action.connect((self) => {
			Glyph glyph = MainWindow.get_current_glyph ();
			double x, y, w, h;
			double delta;
			
			glyph.selection_boundaries (out x, out y, out w, out h);
			delta = x_coordinate.get_value () - x + glyph.left_limit;
			
			foreach (Path path in glyph.active_paths) {
				path.move (delta, 0);
			}
			
			GlyphCanvas.redraw ();
		});	
		draw_tool_modifiers.add_tool (x_coordinate);

		move_tool.objects_moved.connect (() => {
			Glyph glyph = MainWindow.get_current_glyph ();
			x_coordinate.set_value_round (MoveTool.selection_box_center_x
				- (MoveTool.selection_box_width / 2)
				- glyph.left_limit, true, false);
		});
		
		move_tool.selection_changed.connect (() => {
			Glyph glyph = MainWindow.get_current_glyph ();
			x_coordinate.set_value_round (MoveTool.selection_box_center_x
				- (MoveTool.selection_box_width / 2)
				- glyph.left_limit, true, false);
		});

		move_tool.objects_deselected.connect (() => {
			x_coordinate.set_value_round (0, true, false);
			x_coordinate.hide_value ();
		});
		
		// y coordinate
		y_coordinate = new SpinButton ("y_coordinate", t_("Y coordinate"));
		y_coordinate.set_big_number (true);
		y_coordinate.set_int_value ("0.000");
		y_coordinate.set_int_step (0.1);
		y_coordinate.set_min (-999.99);
		y_coordinate.set_max (999.99);
		y_coordinate.show_icon (true);
		y_coordinate.set_persistent (false);
		y_coordinate.new_value_action.connect((self) => {
			double x, y, w, h;
			Glyph glyph = MainWindow.get_current_glyph ();
			Font font = BirdFont.get_current_font ();
			
			glyph.selection_boundaries (out x, out y, out w, out h);
			
			foreach (Path path in glyph.active_paths) {
				path.move (0, y_coordinate.get_value () - (y - h) - font.base_line);
			}
			
			GlyphCanvas.redraw ();
		});
		draw_tool_modifiers.add_tool (y_coordinate);

		move_tool.objects_moved.connect (() => {
			Font font = BirdFont.get_current_font ();
			y_coordinate.set_value_round (MoveTool.selection_box_center_y
				- (MoveTool.selection_box_height / 2)
				+ font.base_line, true, false);
		});
		
		move_tool.selection_changed.connect (() => {
			Font font = BirdFont.get_current_font ();
			y_coordinate.set_value_round (MoveTool.selection_box_center_y
				- (MoveTool.selection_box_height / 2)
				+ font.base_line, true, false);
		});

		move_tool.objects_deselected.connect (() => {
			y_coordinate.set_value_round (0, true, false);
			y_coordinate.hide_value ();
		});

		// rotation
		rotation = new SpinButton ("rotation", t_("Rotation"));
		rotation.set_big_number (true);
		rotation.set_int_value ("0.000");
		rotation.set_int_step (0.1);
		rotation.set_min (-360);
		rotation.set_max (360);
		rotation.show_icon (true);
		rotation.set_persistent (false);
		rotation.new_value_action.connect ((self) => {
			double x, y, w, h;
			Glyph glyph = MainWindow.get_current_glyph ();
			double angle = (self.get_value () / 360) * 2 * PI;
			Path last_path;
			glyph.selection_boundaries (out x, out y, out w, out h);
			
			x += w / 2;
			y -= h / 2;
			
			if (glyph.active_paths.size > 0) {
				last_path = glyph.active_paths.get (glyph.active_paths.size - 1);
				resize_tool.rotate_selected_paths (angle - last_path.rotation, x, y);		
			}
			
			GlyphCanvas.redraw ();
		});
		
		resize_tool.objects_rotated.connect ((angle) => {
			rotation.set_value_round (angle, true, false);
			PenTool.reset_stroke ();
		});
		
		move_tool.objects_deselected.connect (() => {
			rotation.set_value_round (0, true, false);
			rotation.hide_value ();
		});
		
		draw_tool_modifiers.add_tool (rotation);

		// width
		width = new SpinButton ("width", t_("Width"));
		width.set_big_number (true);
		width.set_int_value ("0.0000");
		width.set_int_step (0.01);
		width.show_icon (true);
		width.set_persistent (false);
		width.new_value_action.connect ((self) => {
			double x, y, w, h;
			Glyph glyph;
			double new_size;
			
			glyph = MainWindow.get_current_glyph ();
			glyph.selection_boundaries (out x, out y, out w, out h);
			
			new_size = self.get_value () / w;
			
			if (self.get_value () > 0 && new_size != 1) {
				resize_tool.resize_selected_paths (new_size, new_size);
			}
			
			GlyphCanvas.redraw ();
		});
		draw_tool_modifiers.add_tool (width);

		// height
		height = new SpinButton ("height", t_("Height"));
		height.set_big_number (true);
		height.set_int_value ("0.0000");
		height.set_int_step (0.01);
		height.show_icon (true);
		height.set_persistent (false);
		height.new_value_action.connect ((self) => {
			double x, y, w, h;
			Glyph glyph;
			double new_size;
			
			glyph = MainWindow.get_current_glyph ();
			glyph.selection_boundaries (out x, out y, out w, out h);
			
			new_size = self.get_value () / h;
			
			if (self.get_value () > 0 && new_size != 1) {
				resize_tool.resize_selected_paths (new_size, new_size);
			}
						
			GlyphCanvas.redraw ();
		});
		draw_tool_modifiers.add_tool (height);
				
		resize_tool.objects_resized.connect ((w, h) => {
			height.set_value_round (h, true, false);
			width.set_value_round (w, true, false);
		});
		
		move_tool.objects_deselected.connect (() => {
			width.set_value_round (0, true, false);
			width.hide_value ();

			height.set_value_round (0, true, false);
			height.hide_value ();			
		});

		move_tool.objects_moved.connect (() => {
			width.set_value_round (MoveTool.selection_box_width, true, false);
			height.set_value_round (MoveTool.selection_box_height, true, false);
		});

		// tie edit point handles
		tie_handles = new Tool ("tie_point", t_("Tie curve handles for the selected edit point"));
		tie_handles.select_action.connect ((self) => {
			bool tie, end_point;
			EditPoint p;
			
			if (PenTool.move_selected_handle) {
				p = PenTool.active_handle.parent;
				tie = !p.tie_handles;
				
				// don't tie end points
				foreach (Path path in MainWindow.get_current_glyph ().active_paths) {
					if (path.is_open ()) {
						if (p == path.get_first_point () || p == path.get_last_point ()) {
							tie = false;
						}
					}
				}
				
				if (tie) {
					p.process_tied_handle ();
					p.set_reflective_handles (false);
				}
				
				p.set_tie_handle (tie);
				
				PenTool.handle_selection.path.update_region_boundaries ();
			} else {
				foreach (PointSelection ep in PenTool.selected_points) {
					tie = !ep.point.tie_handles;
					
					end_point = ep.point == ep.path.get_first_point () 
						|| ep.point == ep.path.get_last_point ();
					
					if (!ep.path.is_open () || !end_point) {
						if (tie) {
							ep.point.process_tied_handle ();
							ep.point.set_reflective_handles (false);
						}
					
						ep.point.set_tie_handle (tie);
						ep.path.update_region_boundaries ();
					}
				}
			}
			
			MainWindow.get_current_glyph ().update_view ();
			PenTool.reset_stroke ();
		});
		draw_tool_modifiers.add_tool (tie_handles);
		
		// symmetrical handles
		reflect_handle = new Tool ("symmetric", t_("Symmetrical handles"));
		reflect_handle.select_action.connect ((self) => {
			bool symmetrical, end_point;
			PointSelection ep;
			if (PenTool.selected_points.size > 0) {
				ep = PenTool.selected_points.get (0);
				symmetrical = ep.point.reflective_point;
				
				foreach (PointSelection p in PenTool.selected_points) {					
					end_point = p.point == p.path.get_first_point () 
						|| p.point == p.path.get_last_point ();
					
					if (!p.path.is_open () || !end_point) {
						p.point.set_reflective_handles (!symmetrical);
						p.point.get_right_handle ().process_symmetrical_handle ();
						
						if (symmetrical) {
							ep.point.set_tie_handle (false);
						}
						
						p.path.update_region_boundaries ();
					}
				}
				MainWindow.get_current_glyph ().update_view ();
			}
			
			PenTool.reset_stroke ();
		});
		draw_tool_modifiers.add_tool (reflect_handle);

		create_line = new Tool ("create_line", t_("Convert segment to line."));
		create_line.select_action.connect ((self) => {
			PenTool.convert_segment_to_line ();
			MainWindow.get_current_glyph ().update_view ();
			PenTool.reset_stroke ();
		});
		draw_tool_modifiers.add_tool (create_line);
	
		reverse_path_tool = new OrientationTool ("reverse_path", t_("Create counter from outline"));
		draw_tool_modifiers.add_tool (reverse_path_tool);

		full_height_tool = new Tool ("full_height", t_("Scale object to font top/baseline"));
		full_height_tool.select_action.connect ((self) => {
				resize_tool.full_height ();
				GlyphCanvas.redraw ();
		});

		draw_tool_modifiers.add_tool (full_height_tool);

		// close path
		close_path_tool = new Tool ("close_path", t_("Close path"));
		close_path_tool.select_action.connect ((self) => {
			Tool current;
			Glyph g;
			
			current = MainWindow.get_toolbox ().get_current_tool ();
			
			if (current is BezierTool) {
				((BezierTool) current).stop_drawing ();
			}
			
			PenTool.reset_stroke ();
			
			g = MainWindow.get_current_glyph ();
			g.close_path ();
			g.clear_active_paths ();
			
			self.set_selected (false);
			GlyphCanvas.redraw ();
		});
		draw_tool_modifiers.add_tool (close_path_tool);
		
		move_layer = new Tool ("move_layer", t_("Move to path to the bottom of the layer"));
		move_layer.select_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			Layer layer = g.get_current_layer ();
			
			foreach (Path p in g.active_paths) {
				layer.paths.remove (p);
				layer.paths.paths.insert (0, p);
			}
			
			GlyphCanvas.redraw ();
		});
		draw_tool_modifiers.add_tool (move_layer);

		flip_vertical = new Tool ("flip_vertical", t_("Flip path vertically"));
		flip_vertical.select_action.connect ((self) => {
			MoveTool.flip_vertical ();
			MainWindow.get_current_glyph ().update_view ();
			PenTool.reset_stroke ();
		});
		draw_tool_modifiers.add_tool (flip_vertical);

		flip_horizontal = new Tool ("flip_horizontal", t_("Flip path horizontally"));
		flip_horizontal.select_action.connect ((self) => {
			MoveTool.flip_horizontal ();
			MainWindow.get_current_glyph ().update_view ();
			PenTool.reset_stroke ();
		});
		draw_tool_modifiers.add_tool (flip_horizontal);

		// background tools
		background_scale = new SpinButton ("scale_background", t_("Set size for background image"));
		background_scale.show_icon (true);
		background_scale.set_int_value ("1.000");
		
		background_scale.new_value_action.connect((self) => {
			background_scale.select_action (self);
		});
		
		background_scale.select_action.connect((self) => {
			SpinButton sb = (SpinButton) self;
			Glyph g = MainWindow.get_current_glyph ();
			BackgroundImage? img = g.get_background_image ();
			double s = sb.get_value ();
			BackgroundImage i;
			double xc, yc;
			
			if (img != null) {
				i = (!) img;
				xc = i.img_middle_x;
				yc = i.img_middle_y;

				i.set_img_scale (s, s);
				
				i.img_middle_x = xc;
				i.img_middle_y = yc;
			}
			
			GlyphCanvas.redraw ();
		});
		
		draw_tool_modifiers.add_tool (background_scale);		
		
		cut_background = new CutBackgroundTool ("cut_background");
		cut_background.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});	
		draw_tool_modifiers.add_tool (cut_background);
		
		show_bg = new Tool ("show_background", t_("Show/hide background image"));
		show_bg.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});	
		show_bg.select_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			g.set_background_visible (!g.get_background_visible ());
			GlyphCanvas.redraw ();
		});
		draw_tool_modifiers.add_tool (show_bg);
		
		bg_selection = new Tool ("insert_background", t_("Insert a new background image"));
		bg_selection.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});	
		
		bg_selection.select_action.connect((self) => {
			if (MainWindow.get_current_display () is GlyphTab) {
				BackgroundTool.import_background_image ();
			}
		});
		
		bg_selection.set_show_background (true);
		draw_tool_modifiers.add_tool (bg_selection);

		high_contrast_background = new Tool ("high_contrast_background", t_("High contrast"));
		high_contrast_background.select_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			BackgroundImage? bg = g.get_background_image ();
			BackgroundImage b;
			
			if (bg != null) {
				b = (!) bg;
				b.set_high_contrast (!b.high_contrast);
				b.update_background ();
			}
		});
		draw_tool_modifiers.add_tool (high_contrast_background);
				
		background_threshold = new SpinButton ("contrast_threshold", t_("Set background threshold"));
		background_threshold.show_icon (true);
		background_threshold.set_value_round (1);

		background_threshold.new_value_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			BackgroundImage? bg = g.get_background_image ();
			BackgroundImage b;
			
			if (bg != null) {
				b = (!) bg;
				b.update_background ();
			}
			
			BirdFont.get_current_font ().settings.set_setting ("autotrace_threshold", background_threshold.get_display_value ());
		});
		
		draw_tool_modifiers.add_tool (background_threshold);

		auto_trace_resolution = new SpinButton ("auto_trace_resolution", t_("Amount of autotrace details"));
		auto_trace_resolution.set_value_round (1);
		auto_trace_resolution.show_icon (true);

		auto_trace_resolution.new_value_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			BackgroundImage? bg = g.get_background_image ();
			BackgroundImage b;
			
			if (bg != null) {
				b = (!) bg;
				b.update_background ();
			}
			
			BirdFont.get_current_font ().settings.set_setting ("autotrace_resolution", auto_trace_resolution.get_display_value ());
		});
		
		draw_tool_modifiers.add_tool (auto_trace_resolution);

		auto_trace_simplify = new SpinButton ("auto_trace_simplify", t_("Autotrace simplification"));
		auto_trace_simplify.set_value_round (0.5);
		auto_trace_simplify.show_icon (true);

		auto_trace_simplify.new_value_action.connect ((self) => {
			BirdFont.get_current_font ().settings.set_setting ("autotrace_simplification", background_threshold.get_display_value ());
		});
		
		draw_tool_modifiers.add_tool (auto_trace_simplify);
				
		auto_trace = new Tool ("autotrace", t_("Autotrace background image"));
		auto_trace.select_action.connect ((self) => {
			Task t = new Task (auto_trace_background);
			MainWindow.run_blocking_task (t);
		});			
			
		draw_tool_modifiers.add_tool (auto_trace);		

		delete_background = new Tool ("delete_background", t_("Delete background image"));
		delete_background.select_action.connect ((self) => {
			MainWindow.get_current_glyph ().delete_background ();
		});			
			
		draw_tool_modifiers.add_tool (delete_background);	

		add_layer = new Tool ("add_layer", t_("Add layer"));
		add_layer.select_action.connect ((self) => {
			layer_tools.visible = true;
			MainWindow.get_current_glyph ().add_new_layer ();
			update_layers (); // FIXME: speed optimization
			show_layers.selected = true;
			add_layer.selected = false;
		});
		layer_settings.add_tool (add_layer);

		show_layers = new Tool ("show_layers", t_("Show layers"));
		show_layers.select_action.connect ((self) => {
			layer_tools.visible = !layer_tools.visible;
			MainWindow.get_toolbox ().update_expanders ();
			Toolbox.redraw_tool_box ();
			show_layers.selected = layer_tools.visible;
		});
		layer_settings.add_tool (show_layers);
				
		// add stroke to path
		add_stroke = new Tool ("apply_stroke", t_("Apply stroke"));

		add_stroke.select_action.connect ((self) => {
			Font f;
			Glyph g = MainWindow.get_current_glyph ();
			StrokeTool.add_stroke = !StrokeTool.add_stroke;
			StrokeTool.stroke_width = object_stroke.get_value ();

			add_stroke.selected = StrokeTool.add_stroke;
			set_stroke_tool_visibility ();	
			GlyphCanvas.redraw ();
			g.store_undo_state ();
		
			if (StrokeTool.add_stroke) {
				foreach (Path p in g.active_paths) {
					p.stroke = StrokeTool.stroke_width;
					p.line_cap = StrokeTool.line_cap;
				}
			} else {
				foreach (Path p in g.active_paths) {
					p.stroke = 0;
				}	
			}
			
			f = BirdFont.get_current_font ();
			f.settings.set_setting ("apply_stroke", @"$(StrokeTool.add_stroke)");
			
			stroke_expander.redraw ();
			MainWindow.get_toolbox ().update_expanders ();
		});
		stroke_expander.add_tool (add_stroke);
		add_stroke.selected = StrokeTool.add_stroke;
		
		// edit stroke width
		object_stroke = new SpinButton ("object_stroke", t_("Stroke width"));
		object_stroke.set_big_number (true);
		object_stroke.set_value_round (2);
		object_stroke.set_max (0.01);
		object_stroke.set_max (50);
		
		object_stroke.new_value_action.connect((self) => {
			Font f;
			Glyph g = MainWindow.get_current_glyph ();
			
			bool tool = resize_tool.is_selected ()
				|| move_tool.is_selected ()
				|| pen_tool.is_selected ()
				|| track_tool.is_selected ()
				|| point_tool.is_selected ()
				|| bezier_tool.is_selected ();
			
			StrokeTool.stroke_width = object_stroke.get_value ();
					
			if (tool && StrokeTool.add_stroke) {
				foreach (Path p in g.active_paths) {
					p.stroke = StrokeTool.stroke_width;
					p.reset_stroke ();
				}
			}
			
			f = BirdFont.get_current_font ();
			f.settings.set_setting ("stroke_width", object_stroke.get_display_value ());
			
			GlyphCanvas.redraw ();
		});
		stroke_expander.add_tool (object_stroke);
		
		move_tool.selection_changed.connect (() => {
			update_stroke_settings ();
		});
		
		move_tool.objects_moved.connect (() => {
			update_stroke_settings ();
		});
		
		// create outline from path
		outline = new Tool ("stroke_to_outline", t_("Create outline form stroke"));
		outline.select_action.connect ((self) => {
			StrokeTool s = new StrokeTool ();
			s.stroke_selected_paths ();
			outline.set_selected (false);
		});
		stroke_expander.add_tool (outline);	

		// set line cap
		line_cap_butt = new Tool ("line_cap_butt", t_("Butt line cap"));
		line_cap_butt.select_action.connect ((self) => {
			Glyph g;
			
			g = MainWindow.get_current_glyph ();
			g.store_undo_state ();
			
			foreach (Path p in g.active_paths) {
				p.line_cap = LineCap.BUTT;
				p.reset_stroke ();
			}
			
			StrokeTool.line_cap = LineCap.BUTT;
			Font f = BirdFont.get_current_font ();
			f.settings.set_setting ("line_cap", @"butt");

			line_cap_butt.selected = true;
			line_cap_round.selected = false;
			line_cap_square.selected = false;
			
			GlyphCanvas.redraw ();
		});
		stroke_expander.add_tool (line_cap_butt);	
		
		line_cap_round = new Tool ("line_cap_round", t_("Round line cap"));
		line_cap_round.select_action.connect ((self) => {
			Glyph g;
			
			g = MainWindow.get_current_glyph ();
			g.store_undo_state ();
			
			foreach (Path p in g.active_paths) {
				p.line_cap = LineCap.ROUND;
				p.reset_stroke ();
			}
			
			StrokeTool.line_cap = LineCap.ROUND;

			Font f = BirdFont.get_current_font ();
			f.settings.set_setting ("line_cap", @"round");

			line_cap_butt.selected = false;
			line_cap_round.selected = true;
			line_cap_square.selected = false;
						
			GlyphCanvas.redraw ();
		});
		stroke_expander.add_tool (line_cap_round);	

		line_cap_square = new Tool ("line_cap_square", t_("Square line cap"));
		line_cap_square.select_action.connect ((self) => {
			Glyph g;
			
			g = MainWindow.get_current_glyph ();
			g.store_undo_state ();
			
			foreach (Path p in g.active_paths) {
				p.line_cap = LineCap.SQUARE;
				p.reset_stroke ();
			}
			
			StrokeTool.line_cap = LineCap.SQUARE;

			Font f = BirdFont.get_current_font ();
			f.settings.set_setting ("line_cap", @"square");
			
			line_cap_butt.selected = false;
			line_cap_round.selected = false;
			line_cap_square.selected = true;
			
			GlyphCanvas.redraw ();
		});
		stroke_expander.add_tool (line_cap_square);	

		// tests
		if (BirdFont.has_argument ("--test")) {
			Tool test_case = new Tool ("test_case");
			test_case.select_action.connect((self) => {
					if (self.is_selected ()) {
						if (TestBirdFont.is_running ()) {
							TestBirdFont.pause ();
						} else {
							TestBirdFont.continue ();
						}
					}
				});
			test_tools.add_tool (test_case);

			Tool slow_test = new Tool ("slow_test");
			slow_test.select_action.connect((self) => {
					bool s = TestBirdFont.is_slow_test ();
					TestBirdFont.set_slow_test (!s);
					s = TestBirdFont.is_slow_test ();
					self.set_selected (s);
				});
		
			test_tools.add_tool (slow_test);
					
			// Run from commad line
			string? st = BirdFont.get_argument ("--test");
			if (st != null && ((!)st).char_count () > 0) {
				IdleSource idle = new IdleSource ();

				idle.set_callback (() => {			
					MainWindow.get_toolbox ().select_tool (test_case);
					return false;
				});
				
				idle.attach (null);
			}
			
			if (BirdFont.has_argument ("--slow")) {
				MainWindow.get_toolbox ().select_tool (slow_test);
			}
			
		}
		
		// guide lines, grid and other guidlines
		help_lines = new Tool ("help_lines", t_("Show guidelines"));
		help_lines.select_action.connect ((self) => {
			bool h;
			h = GlyphCanvas.get_current_glyph ().get_show_help_lines ();
			GlyphCanvas.get_current_glyph ().set_show_help_lines (!h);
			self.set_selected (!h);
			GlyphCanvas.get_current_glyph ().redraw_help_lines ();
		});
		selected_line = GlyphCanvas.get_current_glyph ().get_show_help_lines ();
		help_lines.set_selected (selected_line);
		guideline_tools.add_tool (help_lines);

		xheight_help_lines = new Tool ("show_xheight_helplines", t_("Show more guidelines"));
		xheight_help_lines.select_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			bool v = !g.get_xheight_lines_visible ();
			g.set_xheight_lines_visible (v);
			self.set_selected (v);
			GlyphCanvas.redraw ();
			
			if (v && !help_lines.is_selected ()) {
				MainWindow.get_toolbox ().select_tool (help_lines);
			}
		});
		selected_line = GlyphCanvas.get_current_glyph ().get_xheight_lines_visible ();
		xheight_help_lines.set_selected (selected_line);
		guideline_tools.add_tool (xheight_help_lines);

		background_help_lines = new Tool ("background_help_lines", t_("Show guidelines at top and bottom margin"));
		background_help_lines.select_action.connect ((self) => {
			Glyph g = MainWindow.get_current_glyph ();
			bool v = !g.get_margin_lines_visible ();
			g.set_margin_lines_visible (v);
			self.set_selected (v);
			GlyphCanvas.redraw ();
			
			if (v && !help_lines.is_selected ()) {
				MainWindow.get_toolbox ().select_tool (help_lines);
			}
		});
		selected_line = GlyphCanvas.get_current_glyph ().get_margin_lines_visible ();
		background_help_lines.set_selected (selected_line);
		guideline_tools.add_tool (background_help_lines);

		show_grid = new GridTool ("show_grid");
		show_grid.select_action.connect (() => {
			grid_expander.visible = show_grid.selected;
			MainWindow.get_toolbox ().update_expanders ();
		});
		guideline_tools.add_tool (show_grid);
		grid_expander.visible = false;

		lock_grid = new Tool ("lock_grid", t_("Lock guides and grid"));
		lock_grid.select_action.connect ((self) => {
			SpinButton sb;
			FontSettings fs;
			
			GridTool.lock_grid = !GridTool.lock_grid;

			foreach (Tool t in grid.tool) {
				if (t is SpinButton) {
					sb = (SpinButton) t;
					sb.locked = GridTool.lock_grid;
				}
			}
			
			lock_grid.selected = GridTool.lock_grid;
			fs = BirdFont.get_current_font ().settings;
			fs.set_setting ("lock_grid", @"$(GridTool.lock_grid)");
		});
		guideline_tools.add_tool (lock_grid);

		// Zoom tools 
		zoom_bar = new ZoomBar ();
		zoom_bar.new_zoom.connect ((z) => {
			Glyph g = MainWindow.get_current_glyph ();
			double zoom = 20 * z + 1;
			double xc, yc, nxc, nyc;

			xc = Glyph.path_coordinate_x (Glyph.xc ());
			yc = Glyph.path_coordinate_y (Glyph.yc ());
						
			g.set_zoom (zoom);

			nxc = Glyph.path_coordinate_x (Glyph.xc ());
			nyc = Glyph.path_coordinate_y (Glyph.yc ());
			
			g.view_offset_x -= nxc - xc;
			g.view_offset_y += nyc - yc;
						
			GlyphCanvas.redraw ();
		});
		zoombar_tool.add_tool (zoom_bar);

		Tool reset_zoom = new Tool ("zoom_1_1", t_("Zoom Out More"));
		reset_zoom.select_action.connect ((self) => {
				zoom_tool.store_current_view ();
				glyph_canvas.get_current_display ().reset_zoom ();
				glyph_canvas.redraw_area(0, 0, GlyphCanvas.allocation.width, GlyphCanvas.allocation.height);
				self.set_selected (false);
			});
		zoombar_tool.add_tool (reset_zoom);
		reset_zoom.set_tool_visibility (false);

		Tool full_glyph = new Tool ("full_glyph", t_("Show full glyph"));
		full_glyph.select_action.connect((self) => {
			zoom_tool.store_current_view ();
			zoom_tool.zoom_full_glyph ();
			self.set_selected (false);
		});
		zoombar_tool.add_tool (full_glyph);

		Tool zoom_boundaries = new Tool ("zoom_boundaries", t_("Fit in view"));
		zoom_boundaries.select_action.connect((self) => {
			zoom_tool.store_current_view ();
			glyph_canvas.get_current_display ().zoom_max ();
			self.set_selected (false);
		});
		zoombar_tool.add_tool (zoom_boundaries);

		Tool zoom_bg = new Tool ("zoom_background_image", t_("Zoom in on background image"));
		zoom_bg.select_action.connect((self) => {
			if (MainWindow.get_current_glyph ().get_background_image () != null) {
				zoom_tool.store_current_view ();					
				ZoomTool.zoom_full_background_image ();
				glyph_canvas.redraw_area(0, 0, GlyphCanvas.allocation.width, GlyphCanvas.allocation.height);
			}
			self.set_selected (false);
		});
		zoombar_tool.add_tool (zoom_bg);

		Tool zoom_prev = new Tool ("prev", t_("Previous view"));
		zoom_prev.select_action.connect((self) => {
			zoom_tool.previous_view ();
			self.set_selected (false);
		});
		zoombar_tool.add_tool (zoom_prev);

		Tool zoom_next = new Tool ("next", t_("Next view"));
		zoom_next.select_action.connect((self) => {
			zoom_tool.next_view ();
			self.set_selected (false);
		});
		zoombar_tool.add_tool (zoom_next); // view_tools
		zoom_next.set_tool_visibility (false);
		
		// shape tools 
		circle = new CircleTool ("circle");
		circle.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		shape_tools.add_tool (circle);
		
		rectangle = new RectangleTool ("rectangle");
		rectangle.select_action.connect ((self) => {
			update_drawing_and_background_tools (self);
		});
		shape_tools.add_tool (rectangle);
		
		add_expander (font_name);
		add_expander (draw_tools);
		
		if (BirdFont.android) {
			add_expander (key_tools);
		}
		
		add_expander (draw_tool_modifiers);
		add_expander (layer_settings);
		add_expander (layer_tools);
		add_expander (stroke_expander);
		add_expander (guideline_tools);
		add_expander (grid);
		add_expander (zoombar_tool);
		add_expander (shape_tools);
		
		// Fixa: add_expander (trace);
		if (BirdFont.has_argument ("--test")) {
			add_expander (test_tools);
		}
		
		layer_settings.set_persistent (true);
		layer_settings.set_unique (false);
		
		draw_tools.set_persistent (true);
		draw_tools.set_unique (false);
		
		stroke_expander.set_persistent (true);
		stroke_expander.set_unique (false);
		
		key_tools.set_persistent (false);
		key_tools.set_unique (false);
		
		draw_tool_modifiers.set_persistent (true);
		draw_tool_modifiers.set_unique (false);
		
		test_tools.set_persistent (true);
	
		guideline_tools.set_persistent (true);
		guideline_tools.set_unique (false);
		
		grid.set_persistent (true);
		grid.set_unique (true);

		shape_tools.set_persistent (true);
		shape_tools.set_unique (true);
				
		// let these tools progagate events even when other tools are selected			
		foreach (Tool t in draw_tools.tool) {
			t.editor_events = true;
		}

		foreach (Tool t in shape_tools.tool) {
			t.editor_events = true;
			t.persistent = true;
		}
		
		move_background.editor_events = true;
		cut_background.editor_events = true;
		move_canvas.editor_events = true;	
		
		move_background.persistent = true;
		cut_background.persistent = true;
		move_canvas.persistent = true;
		
		// Default selection
		IdleSource idle = new IdleSource ();
		idle.set_callback (() => {
			Toolbox tb = MainWindow.get_toolbox ();
			
			tb.reset_active_tool ();
			update_drawing_and_background_tools (point_tool);
			tb.select_tool (point_tool);
			tb.set_current_tool (point_tool);
					
			set_point_type_from_preferences ();
			
			if (GlyphCanvas.get_current_glyph ().get_show_help_lines ()) {
				help_lines.set_selected (true);
				help_lines.set_active (false);
			}

			add_new_grid (1);
			add_new_grid (2);
			add_new_grid (4);
			
			MainWindow.get_toolbox ().move (0, 0);
			set_stroke_tool_visibility ();
			
			return false;
		});
		idle.attach (null);
		
		// update selelction when the user switches tab
		MainWindow.get_tab_bar ().signal_tab_selected.connect((tab) => {
			Glyph glyph;
			GlyphTab glyph_tab;
			
			if (tab.get_display () is GlyphTab) {
				glyph_tab = (GlyphTab) tab.get_display ();
				glyph = glyph_tab.glyphs.get_current ();
				show_bg.set_selected (glyph.get_background_visible ());
				update_line_selection (glyph);
			}
		});
	}

	public static void update_stroke_settings () {
		bool stroke = false;
		Glyph g = MainWindow.get_current_glyph ();
		
		foreach (Path p in g.active_paths) {
			if (p.stroke > 0) {
				stroke = true;
			}
		}
		
		add_stroke.selected = stroke;
		StrokeTool.add_stroke = stroke;
		set_stroke_tool_visibility ();
	}

	void auto_trace_background () {
		Glyph g = MainWindow.get_current_glyph ();
		BackgroundImage? bg = g.get_background_image ();
		BackgroundImage b;
		PathList pl;
		
		if (bg != null) {
			b = (!) bg;
			pl =  b.autotrace ();
			foreach (Path p in pl.paths) {
				g.add_path (p);
			}
		}
	}
	
	void update_line_selection (Glyph glyph) {
		help_lines.set_selected (glyph.get_show_help_lines ());
		xheight_help_lines.set_selected (glyph.get_xheight_lines_visible ());
		background_help_lines.set_selected (glyph.get_margin_lines_visible ());
	}

	public static void set_point_type_from_preferences () {
		string type = Preferences.get ("point_type");
		if (type == "double_points") {
			Toolbox.select_tool_by_name ("double_points");
		} else if (type == "quadratic_points") {
			Toolbox.select_tool_by_name ("quadratic_points");
		} if (type == "cubic_points") {
			Toolbox.select_tool_by_name ("cubic_points");
		}
	}

	void hide_all_modifiers () {
		x_coordinate.set_tool_visibility (false);
		y_coordinate.set_tool_visibility (false);
		rotation.set_tool_visibility (false);
		width.set_tool_visibility (false);
		height.set_tool_visibility (false);
		
		reverse_path_tool.set_tool_visibility (false);
		full_height_tool.set_tool_visibility (false);
		move_layer.set_tool_visibility (false);
		flip_vertical.set_tool_visibility (false);
		flip_horizontal.set_tool_visibility (false);

		tie_handles.set_tool_visibility (false);
		reflect_handle.set_tool_visibility (false);
		create_line.set_tool_visibility (false);
		close_path_tool.set_tool_visibility (false);

		quadratic_points.set_tool_visibility (false);
		cubic_points.set_tool_visibility (false);
		double_points.set_tool_visibility (false);
		convert_points.set_tool_visibility (false);

		cut_background.set_tool_visibility (false);
		show_bg.set_tool_visibility (false);
		bg_selection.set_tool_visibility (false);
		background_threshold.set_tool_visibility (false);
		background_scale.set_tool_visibility (false);
		high_contrast_background.set_tool_visibility (false);
		auto_trace_resolution.set_tool_visibility (false);
		auto_trace.set_tool_visibility (false);
		auto_trace_simplify.set_tool_visibility (false);
		delete_background.set_tool_visibility (false);
	}

	void show_background_tool_modifiers () {
		draw_tool_modifiers.set_headline (backgrounds_headline);
		
		cut_background.set_tool_visibility (true);
		show_bg.set_tool_visibility (true);
		bg_selection.set_tool_visibility (true);
		background_threshold.set_tool_visibility (true);
		background_scale.set_tool_visibility (true);
		high_contrast_background.set_tool_visibility (true);
		auto_trace_resolution.set_tool_visibility (true);
		auto_trace.set_tool_visibility (true);
		auto_trace_simplify.set_tool_visibility (true);
		delete_background.set_tool_visibility (true);
	}
			
	void show_point_tool_modifiers () {
		draw_tool_modifiers.set_headline (control_points_headline);
		
		tie_handles.set_tool_visibility (true);
		reflect_handle.set_tool_visibility (true);
		create_line.set_tool_visibility (true);
		close_path_tool.set_tool_visibility (true);

		quadratic_points.set_tool_visibility (true);
		cubic_points.set_tool_visibility (true);
		double_points.set_tool_visibility (true);
		convert_points.set_tool_visibility (true);
		
		reverse_path_tool.set_tool_visibility (true);
	}
	
	void show_object_tool_modifiers () {
		draw_tool_modifiers.set_headline (object_tools_headline);
		
		x_coordinate.set_tool_visibility (true);
		y_coordinate.set_tool_visibility (true);
		rotation.set_tool_visibility (true);
		width.set_tool_visibility (true);
		height.set_tool_visibility (true);

		reverse_path_tool.set_tool_visibility (true);
		move_layer.set_tool_visibility (true);
		flip_vertical.set_tool_visibility (true);
		flip_horizontal.set_tool_visibility (true);

		full_height_tool.set_tool_visibility (true);
	}
	
	public override void reset_selection (Tool current_tool) {
		foreach (Tool t in draw_tools.tool) {
			if (t != current_tool) {
				t.set_selected (false);
			}
		}
	}
	
	public void update_drawing_and_background_tools (Tool current_tool) {
		IdleSource idle = new IdleSource ();

		idle.set_callback (() => {
			Glyph g = MainWindow.get_current_glyph ();

			reset_selection (current_tool);
			FontDisplay display = MainWindow.get_current_display ();
			
			if (display.get_name () == "Backgrounds") {
				return false;
			}

			hide_all_modifiers ();			
			cut_background.set_selected (false);
			
			bezier_tool.set_selected (false);
			pen_tool.set_selected (false);
			point_tool.set_selected (false);
			zoom_tool.set_selected (false);
			move_tool.set_selected (false);
			resize_tool.set_selected (false);
			track_tool.set_selected (false);
			move_canvas.set_selected (false);
			delete_background.set_selected (false);
			
			show_bg.set_selected (g.get_background_visible ());
			show_bg.set_active (false);
			bg_selection.set_selected (false);
			background_scale.set_active (false);

			rectangle.set_selected (false);
			circle.set_selected (false);
			
			reverse_path_tool.set_selected (false);
			move_layer.set_selected (false);
			flip_vertical.set_selected (false);
			flip_horizontal.set_selected (false);
			
			current_tool.set_selected (true);
		
			if (resize_tool.is_selected () || move_tool.is_selected ()) {
				show_object_tool_modifiers ();
			} else if (bezier_tool.is_selected ()
					|| pen_tool.is_selected () 
					|| point_tool.is_selected ()
					|| track_tool.is_selected ()) {
				show_point_tool_modifiers ();
			} else if (move_background.is_selected ()
					|| cut_background.is_selected ()
					|| show_bg.is_selected ()
					|| high_contrast_background.is_selected ()
					|| auto_trace.is_selected ()) {
				show_background_tool_modifiers ();
			} else {
				show_point_tool_modifiers ();
			}

			MainWindow.get_toolbox ().update_expanders ();			
			draw_tool_modifiers.redraw ();
			
			return false;
		});
		
		idle.attach (null);
	}
	
	void update_type_selection () {
		IdleSource idle = new IdleSource ();

		// Do this in idle, after the animation
		idle.set_callback (() => {	
			Font f = BirdFont.get_current_font ();
					
			quadratic_points.set_selected (false);
			cubic_points.set_selected (false);
			double_points.set_selected (false);

			switch (point_type) {
				case PointType.QUADRATIC:
					quadratic_points.set_selected (true);
					f.settings.set_setting ("point_type", "quadratic");
					break;
				case PointType.CUBIC:
					cubic_points.set_selected (true);
					f.settings.set_setting ("point_type", "cubic");
					break;
				case PointType.DOUBLE_CURVE:
					double_points.set_selected (true);
					f.settings.set_setting ("point_type", "double_curve");
					break;			
			}

			convert_points.set_selected (false);
			
			Toolbox.redraw_tool_box ();
			return false;
		});
		
		idle.attach (null);
	}
	
	public static void set_default_point_type (string type) {
		if (type == "quadratic") {
			quadratic_points.set_selected (true);
			point_type = PointType.QUADRATIC;
		} else if (type == "cubic") {
			cubic_points.set_selected (true);
			point_type = PointType.CUBIC;
		} else if (type == "double_curve") {
			double_points.set_selected (true);
			point_type = PointType.DOUBLE_CURVE;
		}
	}
	
	public override Gee.ArrayList<Expander> get_expanders () {
		return expanders;
	}
	
	/** Insert new points of this type. */
	public static PointType get_selected_point_type () {
		return point_type;
	}
	
	public void remove_all_grid_buttons () {
		grid_expander.tool.clear ();
		
		GridTool.sizes.clear ();
		
		MainWindow.get_toolbox ().update_expanders ();
		MainWindow.get_toolbox ().redraw (0, 0, Toolbox.allocation_width, Toolbox.allocation_height);		
	}
	
	public void parse_grid (string spin_button_value) {
		SpinButton sb = add_new_grid (double.parse (spin_button_value), false);
		MainWindow.get_toolbox ().select_tool (sb);
	}

	public static SpinButton add_new_grid (double size = 2, bool update_settings_in_font = true) {
		SpinButton grid_width = new SpinButton ("grid_width", t_("Set size for grid"));
		Toolbox tb = MainWindow.get_toolbox ();
		
		grid_width.set_value_round (size);
		
		grid_width.new_value_action.connect((self) => {
			Font font = BirdFont.get_current_font ();
			SpinButton w;
			
			grid_width.select_action (grid_width);
			font.grid_width.clear ();
			
			foreach (Tool t in grid_expander.tool) {
				return_if_fail (t is SpinButton);
				w = (SpinButton) t;
				font.grid_width.add (w.get_display_value ());
			}
		});

		grid_width.select_action.connect((self) => {
			return_if_fail (self is SpinButton);
			SpinButton sb = (SpinButton) self;
			GridTool.set_grid_width (sb.get_value ());
			GlyphCanvas.redraw ();
		});
				
		grid_expander.add_tool (grid_width);

		tb.update_expanders ();
		
		tb.redraw (0, 0, Toolbox.allocation_width, Toolbox.allocation_height);
		
		tb.select_tool (grid_width);
		grid_width.set_active (false);
		
		if (update_settings_in_font) {
			GridTool.sizes.add (grid_width);
			
			foreach (Tool t in grid_expander.tool) {
				SpinButton sb = (SpinButton) t;
				BirdFont.get_current_font ().grid_width.add (sb.get_display_value ());
			}
		}
		
		return grid_width;
	}

	public void remove_current_grid () {
		Tool grid_width;
		Toolbox tb = MainWindow.get_toolbox ();
		
		foreach (Tool t in grid_expander.tool) {
			if (t.is_selected () && t is SpinButton) {
				GridTool.sizes.remove ((SpinButton)t);
				grid_expander.tool.remove (t);
				break;
			}
		}
		
		if (grid_expander.tool.size > 0) {
			grid_width = grid_expander.tool.get (grid_expander.tool.size - 1);
			tb.select_tool (grid_width);
			grid_width.set_active (false);
		}
		
		MainWindow.get_toolbox ().update_expanders ();
		tb.redraw (0, 0, Toolbox.allocation_width, Toolbox.allocation_height);
	}
	
	private void add_expander (Expander e) {
		expanders.add (e);
	}

	public override Gee.ArrayList<string> get_displays () {
		Gee.ArrayList<string> d = new Gee.ArrayList<string> ();
		d.add ("Glyph");
		return d;
	}
	
	public static void update_layers () 
	requires (!is_null (layer_tools)) {
		Glyph g = MainWindow.get_current_glyph ();
		int i = 0;
		
		layer_tools.tool.clear ();
		foreach (Layer layer in g.layers.subgroups) { 
			LayerLabel label = new LayerLabel (layer);
			layer_tools.add_tool (label, 0);
			
			if (i == g.current_layer) {
				label.select_layer ();
			}
			
			i++;
		}
		
		MainWindow.get_toolbox ().update_expanders ();
		layer_tools.clear_cache ();
		layer_tools.redraw ();
		Toolbox.redraw_tool_box ();
	}
	
	public static void deselect_layers ()
	requires (!is_null (layer_tools)) {			
		LayerLabel l;
		
		foreach (Tool t in layer_tools.tool) {
			if (t is LayerLabel) {
				l = (LayerLabel) t;
				l.selected_layer = false;
			}
		}
	}
	
	public static void set_stroke_tool_visibility () {
		object_stroke.visible = StrokeTool.add_stroke;
		line_cap_butt.visible = StrokeTool.add_stroke;
		line_cap_round.visible = StrokeTool.add_stroke;
		line_cap_square.visible = StrokeTool.add_stroke;
		stroke_expander.clear_cache ();
		stroke_expander.redraw ();
		MainWindow.get_toolbox ().update_expanders ();
	}

}

}
