| 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 | } |