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a3b510ab NR |
1 | /* |
2 | * This file is part of lanterna (http://code.google.com/p/lanterna/). | |
3 | * | |
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. | |
8 | * | |
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. | |
13 | * | |
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/>. | |
16 | * | |
17 | * Copyright (C) 2010-2015 Martin | |
18 | */ | |
19 | package com.googlecode.lanterna.graphics; | |
20 | ||
21 | import com.googlecode.lanterna.TextCharacter; | |
22 | import com.googlecode.lanterna.TerminalSize; | |
23 | ||
24 | /** | |
25 | * This TextGraphics implementation wraps another TextGraphics and forwards all operations to it, but with a few | |
26 | * differences. First of all, each individual character being printed is printed twice. Secondly, if you call | |
27 | * {@code getSize()}, it will return a size that has half the width of the underlying TextGraphics. This presents the | |
28 | * writable view as somewhat squared, since normally terminal characters are twice as tall as wide. You can see some | |
29 | * examples of how this looks by running the Triangle test in {@code com.googlecode.lanterna.screen.ScreenTriangleTest} | |
30 | * and compare it when running with the --square parameter and without. | |
31 | */ | |
32 | public class DoublePrintingTextGraphics extends AbstractTextGraphics { | |
33 | private final TextGraphics underlyingTextGraphics; | |
34 | ||
35 | /** | |
36 | * Creates a new {@code DoublePrintingTextGraphics} on top of a supplied {@code TextGraphics} | |
37 | * @param underlyingTextGraphics backend {@code TextGraphics} to forward all the calls to | |
38 | */ | |
39 | public DoublePrintingTextGraphics(TextGraphics underlyingTextGraphics) { | |
40 | this.underlyingTextGraphics = underlyingTextGraphics; | |
41 | } | |
42 | ||
43 | @Override | |
44 | public TextGraphics setCharacter(int columnIndex, int rowIndex, TextCharacter textCharacter) { | |
45 | columnIndex = columnIndex * 2; | |
46 | underlyingTextGraphics.setCharacter(columnIndex, rowIndex, textCharacter); | |
47 | underlyingTextGraphics.setCharacter(columnIndex + 1, rowIndex, textCharacter); | |
48 | return this; | |
49 | } | |
50 | ||
51 | @Override | |
52 | public TextCharacter getCharacter(int columnIndex, int rowIndex) { | |
53 | columnIndex = columnIndex * 2; | |
54 | return underlyingTextGraphics.getCharacter(columnIndex, rowIndex); | |
55 | ||
56 | } | |
57 | ||
58 | @Override | |
59 | public TerminalSize getSize() { | |
60 | TerminalSize size = underlyingTextGraphics.getSize(); | |
61 | return size.withColumns(size.getColumns() / 2); | |
62 | } | |
63 | } |