/* | |
* Licensed to the Apache Software Foundation (ASF) under one | |
* or more contributor license agreements. See the NOTICE file | |
* distributed with this work for additional information | |
* regarding copyright ownership. The ASF licenses this file | |
* to you under the Apache License, Version 2.0 (the | |
* "License"); you may not use this file except in compliance | |
* with the License. You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, | |
* software distributed under the License is distributed on an | |
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
* KIND, either express or implied. See the License for the | |
* specific language governing permissions and limitations | |
* under the License. | |
*/ | |
package org.apache.uima.caseditor.editor.annotation; | |
import org.eclipse.jface.text.source.Annotation; | |
import org.eclipse.jface.text.source.AnnotationPainter.IDrawingStrategy; | |
import org.eclipse.swt.custom.StyledText; | |
import org.eclipse.swt.graphics.Color; | |
import org.eclipse.swt.graphics.GC; | |
import org.eclipse.swt.graphics.Rectangle; | |
/** | |
* Draws a box around an annotation. | |
*/ | |
final class BoxDrawingStrategy implements IDrawingStrategy { | |
/** | |
* Draws a box around the given annotation. | |
* | |
* @param annotation | |
* @param gc | |
* @param textWidget | |
* @param offset | |
* @param length | |
* @param color | |
*/ | |
public void draw(Annotation annotation, GC gc, StyledText textWidget, int offset, int length, | |
Color color) { | |
if (length != 0) { | |
if (gc != null) { | |
Rectangle bounds = textWidget.getTextBounds(offset, offset + length - 1); | |
gc.setForeground(color); | |
gc.drawRectangle(bounds.x, bounds.y, bounds.width, bounds.height); | |
} else { | |
textWidget.redrawRange(offset, length, true); | |
} | |
} | |
} | |
} |