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CheckBox.vala in libbirdfont

This file is a part of the Birdfont project.

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1 /* 2 Copyright (C) 2014 Johan Mattsson 3 4 This library is free software; you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 3 of the 7 License, or (at your option) any later version. 8 9 This library is distributed in the hope that it will be useful, but 10 WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 */ 14 15 using Cairo; 16 using Math; 17 18 namespace BirdFont { 19 20 public class CheckBox : Widget { 21 22 public bool checked = false; 23 public signal void updated (bool checked); 24 public double padding = 3.333 * MainWindow.units; 25 26 public double w = 12 * MainWindow.units; 27 public double h = 12 * MainWindow.units; 28 29 public Text label; 30 31 public CheckBox (string text = "", double font_size = -1) { 32 if (font_size < 0) { 33 font_size = h; 34 } 35 36 label = new Text (text, font_size); 37 } 38 39 public void set_checked (bool c) { 40 checked = c; 41 updated (c); 42 } 43 44 public override double get_height () { 45 return label.font_size; 46 } 47 48 public override double get_width () { 49 return w + 2 * padding + label.get_sidebearing_extent (); 50 } 51 52 public override void draw (Context cr) { 53 double d = w * 0.25; 54 double center_y = (get_height () - (h + 2 * padding)) / 2.0 + padding; 55 56 cr.save (); 57 Theme.color (cr, "Background 2"); 58 draw_rounded_rectangle (cr, widget_x, widget_y + center_y, w, h - padding, padding); 59 cr.fill (); 60 cr.restore (); 61 62 cr.save (); 63 cr.set_line_width (1); 64 Theme.color (cr, "Foreground 1"); 65 draw_rounded_rectangle (cr, widget_x, widget_y + center_y, w, h - padding, padding); 66 cr.stroke (); 67 cr.restore (); 68 69 if (checked) { 70 cr.save (); 71 72 Theme.color (cr, "Foreground 1"); 73 cr.set_line_width (1); 74 75 cr.move_to (widget_x + d, widget_y + d + center_y); 76 cr.line_to (widget_x + w - d, widget_y + h - d + center_y); 77 cr.stroke (); 78 79 cr.move_to (widget_x + w - d, widget_y + d + center_y); 80 cr.line_to (widget_x + d, widget_y + h - d + center_y); 81 cr.stroke (); 82 83 cr.restore (); 84 } 85 86 label.widget_x = widget_x + 1.5 * w; 87 label.widget_y = widget_y; 88 label.draw (cr); 89 } 90 91 } 92 93 } 94