Revision 8481f952
Added by Andreas Müller almost 4 years ago
| eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/name/container/LineWrapSquigglesStrategy.java | ||
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/** |
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* Copyright (C) 2007 EDIT |
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* European Distributed Institute of Taxonomy
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* European Distributed Institute of Taxonomy |
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* http://www.e-taxonomy.eu |
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*
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* |
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* The contents of this file are subject to the Mozilla Public License Version 1.1 |
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* See LICENSE.TXT at the top of this package for the full license terms. |
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*/ |
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* |
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* @author p.ciardelli |
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* @created 21.11.2008 |
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* @version 1.0 |
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*/ |
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public class LineWrapSquigglesStrategy extends SquigglesStrategy {
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/** Constant <code>ID="linewrap_squigglesstrategy"</code> */ |
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public static final String ID = "linewrap_squigglesstrategy"; //$NON-NLS-1$ |
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private StyledText textWidget; |
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private int offset; |
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/* (non-Javadoc) |
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* @see org.eclipse.jface.text.source.AnnotationPainter$SquigglesStrategy#draw(org.eclipse.jface.text.source.Annotation, org.eclipse.swt.graphics.GC, org.eclipse.swt.custom.StyledText, int, int, org.eclipse.swt.graphics.Color) |
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*/ |
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/** {@inheritDoc} */
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public void draw(Annotation annotation, GC gc, StyledText textWidget, int offset, int length, Color color) {
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@Override |
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public void draw(Annotation annotation, GC gc, StyledText textWidget, int offset, int length, Color color) {
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this.gc = gc; |
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this.color = color; |
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this.textWidget = textWidget; |
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this.offset = offset; |
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if (gc != null) {
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if (length < 1) |
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return; |
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if (length < 1) {
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return; |
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} |
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baseline = textWidget.getBaseline(offset); |
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lineHeight = textWidget.getLineHeight(offset); |
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Point right = null; |
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int offsetNewline = offset; |
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int end = offset + length; |
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// Go through the length one character at a time |
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for (int i = offset; i <= end; i++) {
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// If the y of the current offset is different from that of the last offset, |
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// we are on a new line |
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if (right != null && textWidget.getLocationAtOffset(i).y > right.y) {
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// Draw a line of squigglies |
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drawPolyline(offsetNewline, right); |
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// Save offset of line break |
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offsetNewline = i; |
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} |
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// Get x,y position in case the next char is on a new line |
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right = textWidget.getLocationAtOffset(i);
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right = textWidget.getLocationAtOffset(i); |
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} |
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// Draw the last line of squigglies
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// Draw the last line of squigglies |
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drawPolyline(offsetNewline, right); |
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} else {
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textWidget.redrawRange(offset, length, true); |
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} |
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} |
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/** |
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* Draws a squiggly line from the offset <code>offsetNewline</code> to |
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* the x,y coordinates at <code>right</code>. |
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*
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* |
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* @param offsetNewline |
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* @param right |
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*/ |
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// Get offset at last line break |
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Point left = textWidget.getLocationAtOffset(offsetNewline); |
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// Prevent solitary red dot from appearing at EOL |
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if (left.equals(right)) {
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return; |
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} |
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// Only start drawing from 0 if not on the first line |
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if (offsetNewline != offset) {
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// Offset.x is at the end of the first letter of the new line, not at 0 |
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left.x = 0; |
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} |
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int[] polyline= computePolyline(left, right, baseline, lineHeight); |
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gc.setLineWidth(0); // NOTE: 0 means width is 1 but with optimized performance |
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} |
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/** |
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* Copied verbatim from {@link org.eclipse.jface.text.source.AnnotationPainter$SquigglesStrategy}
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*
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* Copied verbatim from {@link org.eclipse.jface.text.source.AnnotationPainter$SquigglesStrategy}
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* |
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* @see org.eclipse.jface.text.source.AnnotationPainter$SquigglesStrategy |
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*
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* |
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* @param left |
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* @param right |
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* @param baseline |
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final int HEIGHT= 2; // can be any number |
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int peaks= (right.x - left.x) / WIDTH; |
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if (peaks == 0 && right.x - left.x > 2) |
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peaks= 1; |
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if (peaks == 0 && right.x - left.x > 2) {
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peaks= 1; |
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} |
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int leftX= left.x; |
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// compute (number of point) * 2 |
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int length= ((2 * peaks) + 1) * 2; |
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if (length < 0) |
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return new int[0]; |
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if (length < 0) {
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return new int[0]; |
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} |
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int[] coordinates= new int[length]; |
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