* @author Julius Härtl * @author Morris Jobke * @author Robin Appelman * @author Roeland Jago Douma * * @license AGPL-3.0 * * This code is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, version 3, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License, version 3, * along with this program. If not, see * */ namespace OC\Preview; use OCP\Files\File; use OCP\IImage; class MarkDown extends TXT { /** * {@inheritDoc} */ public function getMimeType(): string { return '/text\/(x-)?markdown/'; } public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage { $content = $file->fopen('r'); if ($content === false) { return null; } $content = stream_get_contents($content, 3000); //don't create previews of empty text files if (trim($content) === '') { return null; } // Merge text paragraph lines that might belong together $content = preg_replace('/^(\s*)\*\s/mU', '$1- ', $content); $content = preg_replace('/((?!^(\s*-|#)).*)(\w|\\|\.)(\r\n|\n|\r)(\w|\*)/mU', '$1 $3', $content); // Remove markdown symbols that we cannot easily represent in rendered text in the preview $content = preg_replace('/\*\*(.*)\*\*/U', '$1', $content); $content = preg_replace('/\*(.*)\*/U', '$1', $content); $content = preg_replace('/\_\_(.*)\_\_/U', '$1', $content); $content = preg_replace('/\_(.*)\_/U', '$1', $content); $content = preg_replace('/\~\~(.*)\~\~/U', '$1', $content); $content = preg_replace('/\!?\[((.|\n)*)\]\((.*)\)/mU', '$1 ($3)', $content); $content = preg_replace('/\n\n+/', "\n", $content); $content = preg_replace('/[\x{10000}-\x{10FFFF}]/u', '', $content); $lines = preg_split("/\r\n|\n|\r/", $content); // Define text size of text file preview $fontSize = $maxX ? (int) ((1 / ($maxX >= 512 ? 60 : 40) * $maxX)) : 10; $image = imagecreate($maxX, $maxY); imagecolorallocate($image, 255, 255, 255); $textColor = imagecolorallocate($image, 0, 0, 0); $fontFile = __DIR__ . '/../../../core/fonts/NotoSans-Regular.ttf'; $fontFileBold = __DIR__ . '/../../../core/fonts/NotoSans-Bold.ttf'; $canUseTTF = function_exists('imagettftext'); $textOffset = (int)min($maxX * 0.05, $maxY * 0.05); $nextLineStart = 0; $y = $textOffset; foreach ($lines as $line) { $actualFontSize = $fontSize; if (mb_strpos($line, '# ') === 0) { $actualFontSize *= 2; } if (mb_strpos($line, '## ') === 0) { $actualFontSize *= 1.8; } if (mb_strpos($line, '### ') === 0) { $actualFontSize *= 1.6; } if (mb_strpos($line, '#### ') === 0) { $actualFontSize *= 1.4; } if (mb_strpos($line, '##### ') === 0) { $actualFontSize *= 1.2; } if (mb_strpos($line, '###### ') === 0) { $actualFontSize *= 1.1; } // Add spacing before headlines if ($actualFontSize !== $fontSize && $y !== $textOffset) { $y += (int)($actualFontSize * 2); } $x = $textOffset; $y += (int)($nextLineStart + $actualFontSize); if ($canUseTTF === true) { $wordWrap = (int)((1 / $actualFontSize * 1.3) * $maxX); // Get rid of markdown symbols that we still needed for the font size $line = preg_replace('/^#*\s/', '', $line); $wrappedText = wordwrap($line, $wordWrap, "\n"); $linesWrapped = count(explode("\n", $wrappedText)); imagettftext($image, $actualFontSize, 0, $x, $y, $textColor, $actualFontSize === $fontSize ? $fontFile : $fontFileBold, $wrappedText); $nextLineStart = (int)($linesWrapped * ceil($actualFontSize * 2)); if ($actualFontSize !== $fontSize && $y !== $textOffset) { $nextLineStart -= $actualFontSize; } } else { $y -= $fontSize; imagestring($image, 1, $x, $y, $line, $textColor); $nextLineStart = $fontSize; } if ($y >= $maxY) { break; } } $imageObject = new \OCP\Image(); $imageObject->setResource($image); return $imageObject->valid() ? $imageObject : null; } } ndard-gwt Vaadin 6, 7, 8 is a Java framework for modern Java web applications: https://github.com/vaadin/frameworkwww-data
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---
title: Support for the Eclipse IDE
order: 3
layout: page
---

[[intro.eclipse]]
= Support for the Eclipse IDE

While Vaadin is not bound to any specific IDE, and you can in fact easily use it
without any IDE altogether, we provide special support for the Eclipse IDE,
which has become the most used environment for Java development. The support is
provided in the Vaadin Plugin for Eclipse, which helps you in:

* Creating new Vaadin projects

* Creating custom themes

* Creating custom client-side widgets

* Easily upgrading to a newer version of the Vaadin library


Using the Vaadin Plugin for Eclipse is the recommended way of installing Vaadin
for development. Downloading the installation package that contains the JARs or
defining Vaadin as a Maven dependency is also possible.

Installing and updating the Eclipse plugin is covered in
<<dummy/../../../framework/getting-started/getting-started-eclipse#getting-started.eclipse,"Vaadin
Plugin for Eclipse">> and the creation of a new Vaadin project using the plugin
in
<<dummy/../../../framework/getting-started/getting-started-first-project#getting-started.first-project.creation,"Creating
the Project">>. See
<<dummy/../../../framework/themes/themes-eclipse#themes.eclipse,"Creating a
Theme in Eclipse">> and
<<dummy/../../../framework/gwt/gwt-eclipse#gwt.eclipse,"Starting It Simple With
Eclipse">> for instructions on using the different features of the plugin.