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Gradient.vala in libsvgbird

This file is a part of the Birdfont project.

Contributing

Send patches or pull requests to johan.mattsson.m@gmail.com.
Clone this repository: git clone https://github.com/johanmattssonm/birdfont.git

Revisions

View the latest version of libsvgbird/Gradient.vala.
Point flags
1 /* 2 Copyright (C) 2015 2016 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 SvgBird { 19 20 public abstract class Gradient : GLib.Object { 21 public Gee.ArrayList<Stop> stops; 22 23 public string id = ""; 24 public string? href = null; 25 public SvgTransforms transforms; 26 public Matrix parent_matrix = Matrix.identity (); 27 public Matrix view_matrix = Matrix.identity (); 28 29 public Gradient () { 30 stops = new Gee.ArrayList<Stop> (); 31 transforms = new SvgTransforms (); 32 } 33 34 public Stop get_stop (int index) { 35 if (unlikely (index < 0 || index >= stops.size)) { 36 warning ("Stop index out of bounds"); 37 return new Stop (); 38 } 39 40 return stops.get (index); 41 } 42 43 public void copy_stops (Gradient g) { 44 foreach (Stop stop in g.stops) { 45 stops.add (stop.copy ()); 46 } 47 } 48 49 public virtual void move (double dx, double dy) { 50 } 51 52 public Matrix get_matrix () { 53 return transforms.get_matrix (); 54 } 55 56 public void copy_gradient (Gradient from, Gradient to) { 57 foreach (Stop s in from.stops) { 58 to.stops.add (s.copy ()); 59 } 60 61 to.id = from.id; 62 to.href = from.href; 63 to.transforms = from.transforms.copy (); 64 65 } 66 67 public abstract Gradient copy (); 68 public abstract string to_string (); 69 70 } 71 72 } 73