From dddab8618c542f11896c2f7b3b258850a8c01ff1 Mon Sep 17 00:00:00 2001 From: Simon Rettberg Date: Tue, 26 Jun 2018 10:26:57 +0200 Subject: Move ResourceLoader to dozmod -- is client specific --- src/main/java/org/openslx/util/ResourceLoader.java | 176 --------------------- 1 file changed, 176 deletions(-) delete mode 100644 src/main/java/org/openslx/util/ResourceLoader.java (limited to 'src/main/java/org/openslx/util/ResourceLoader.java') diff --git a/src/main/java/org/openslx/util/ResourceLoader.java b/src/main/java/org/openslx/util/ResourceLoader.java deleted file mode 100644 index 7f829fc..0000000 --- a/src/main/java/org/openslx/util/ResourceLoader.java +++ /dev/null @@ -1,176 +0,0 @@ -package org.openslx.util; - -import java.awt.Color; -import java.awt.Component; -import java.awt.Font; -import java.awt.Graphics2D; -import java.awt.Image; -import java.awt.RenderingHints; -import java.awt.font.FontRenderContext; -import java.awt.geom.Rectangle2D; -import java.awt.image.BufferedImage; -import java.io.InputStream; -import java.net.URL; -import java.nio.charset.StandardCharsets; -import java.util.HashMap; -import java.util.Map; - -import javax.swing.Icon; -import javax.swing.ImageIcon; - -import org.apache.commons.io.IOUtils; -import org.apache.log4j.Logger; - -/** - * Helper class for loading resources. - * This should be error safe loaders with a fall back in case the - * requested resource can't be found, or isn't of the expected type. - */ -public class ResourceLoader -{ - - /** - * Logger for this class - */ - private final static Logger LOGGER = Logger.getLogger( ResourceLoader.class ); - - /** - * Load the given resource as an ImageIcon. - * This is guaranteed to never throw an Exception and always return - * an ImageIcon. If the requested resource could not be loaded, - * an icon is generated, containing an error message. If even that - * fails, an empty icon is returned. - * - * @param path Resource path to load - * @param description Icon description - * @return ImageIcon instance - */ - public static ImageIcon getIcon( String path, String description ) - { - URL url = ResourceLoader.class.getResource( path ); - if ( url == null ) { - LOGGER.error( "Resource not found: " + path ); - } else { - try { - return new ImageIcon( url, description ); - } catch ( Exception e ) { - LOGGER.error( "Resource not loadable: " + path ); - } - } - // If we reach here loading failed, create image containing error - // message - try { - return errorIcon( "Invalid Resource: " + path ); - } catch ( Throwable t ) { - return new ImageIcon(); - } - } - - public static Icon getIcon( String path, String description, int maxHeight, Component context ) - { - ImageIcon icon = getIcon( path, description ); - return getScaledIcon( icon, maxHeight, context ); - } - - /** - * Load the given resource as an ImageIcon. - * This is guaranteed to never throw an Exception and always return - * an ImageIcon. If the requested resource could not be loaded, - * an icon is generated, containing an error message. If even that - * fails, an empty icon is returned. - * - * @param path Resource path to load - * @return ImageIcon instance - */ - public static ImageIcon getIcon( String path ) - { - return getIcon( path, path ); - } - - /** - * Helper that will create an icon with given text. - * - * @param errorText Text to render to icon - * @return the icon - */ - private static ImageIcon errorIcon( String errorText ) - { - Font font = new Font( "Tahoma", Font.PLAIN, 20 ); - - // get dimensions of text - FontRenderContext frc = new FontRenderContext( null, true, true ); - Rectangle2D bounds = font.getStringBounds( errorText, frc ); - int w = (int)bounds.getWidth(); - int h = (int)bounds.getHeight(); - - // create a BufferedImage object - BufferedImage image = new BufferedImage( w, h, BufferedImage.TYPE_INT_RGB ); - Graphics2D g = image.createGraphics(); - - // set color and other parameters - g.setColor( Color.WHITE ); - g.fillRect( 0, 0, w, h ); - g.setColor( Color.RED ); - g.setFont( font ); - - g.drawString( errorText, (float)bounds.getX(), (float) -bounds.getY() ); - - g.dispose(); - return new ImageIcon( image, "ERROR" ); - } - - /** - * Tries to load the given resource treating it as a text file - * - * @param path Resource path to load - * @return content of the loaded resource as String - */ - public static String getTextFile( String path ) - { - String fileContent = null; - try ( InputStream stream = ResourceLoader.class.getResourceAsStream( path ) ) { - fileContent = IOUtils.toString( stream, StandardCharsets.UTF_8 ); - } catch ( Exception e ) { - LOGGER.error( "IO error while trying to load resource '" + path + "'. See trace: ", e ); - } - - if ( fileContent != null ) { - return fileContent; - } else { - return "Resource '" + path + "' not found."; - } - } - - public static InputStream getStream( String path ) - { - return ResourceLoader.class.getResourceAsStream( path ); - } - - private static final Map iconCache = new HashMap<>(); - - public static Icon getScaledIcon( Icon icon, int height, Component context ) - { - if ( icon == null ) - return null; - ImageIcon cached = iconCache.get( icon ); - if ( cached != null && cached.getIconHeight() == height ) - return cached; - // Generate? - float iHeight = icon.getIconHeight(); - float tHeight = height; - if ( iHeight <= tHeight ) - return icon; // Small enough - // Scale down: - BufferedImage image = new BufferedImage( icon.getIconWidth(), icon.getIconHeight(), - BufferedImage.TYPE_INT_ARGB ); - Graphics2D g = image.createGraphics(); - g.setRenderingHint( RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY ); - g.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON ); - icon.paintIcon( context, g, 0, 0 ); - ImageIcon scaledIcon = new ImageIcon( image.getScaledInstance( - (int) ( icon.getIconWidth() * ( tHeight / iHeight ) ), (int) ( tHeight ), Image.SCALE_SMOOTH ) ); - iconCache.put( icon, scaledIcon ); - return scaledIcon; - } - -} -- cgit v1.2.3-55-g7522