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package util;
import gui.GuiManager;
import java.awt.Graphics2D;
import java.awt.SystemColor;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.net.URL;
import javax.swing.ImageIcon;
import org.apache.commons.io.IOUtils;
import org.apache.log4j.Logger;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Text;
/**
* 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);
public static ImageData getImageData(String path) {
ImageData _imgData = null;
URL _url = ResourceLoader.class.getResource(path);
if (_url == null) {
LOGGER.error("Resource not found: " + path);
return errorIcon("nope").getImageData();
} else {
try {
_imgData = new ImageData(_url.openStream());
} catch (Exception e) {
LOGGER.error("Resource not loadable: " + path + ". See trace: ", e);
return errorIcon("nope").getImageData();
}
return _imgData;
}
}
/**
* Helper that will create an icon with given text.
* @param errorText Text to render to icon
* @return the icon
*/
private static Image errorIcon(String errorText) {
GC gc = new GC(GuiManager.getDisplay());
Font font = new Font(GuiManager.getDisplay(), "Tahoma", 20, SWT.NORMAL);
gc.setFont(font);
// get dimensions of text
Image image = new Image(GuiManager.getDisplay(), gc.stringExtent(errorText).x, gc.stringExtent(errorText).y);
GC gc2 = new GC(image);
gc2.setBackground(GuiManager.getDisplay().getSystemColor(SWT.COLOR_CYAN));
gc2.drawText(errorText, 0, 0);
gc2.dispose();
return image;
}
/**
* 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 {
fileContent = IOUtils.toString(ResourceLoader.class
.getResourceAsStream(path));
} 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.";
}
}
}
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