2 * This file is part of lanterna (http://code.google.com/p/lanterna/).
4 * lanterna is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 * Copyright (C) 2010-2015 Martin
19 package com
.googlecode
.lanterna
.gui2
;
21 import com
.googlecode
.lanterna
.TerminalSize
;
24 * This interface defines a renderer for a component, an external class that does the sizing and rendering. All
25 * components will have a default renderer defined, which can usually be overridden manually and swapped out for a
26 * different renderer, but also themes can contain renderer definitions which are automatically assigned to their
27 * associated components.
28 * @param <T> Type of the component which this renderer is designed for
31 public interface ComponentRenderer
<T
extends Component
> {
33 * Given the supplied component, how large does this renderer want the component to be? Notice that this is the
34 * responsibility of the renderer and not the component itself, since the component has no idea what its visual
35 * representation looks like.
36 * @param component Component to calculate the preferred size of
37 * @return The size this renderer would like the component to take up
39 TerminalSize
getPreferredSize(T component
);
42 * Using the supplied graphics object, draws the component passed in.
43 * @param graphics Graphics object to use for drawing
44 * @param component Component to draw
46 void drawComponent(TextGUIGraphics graphics
, T component
);