001/* =========================================================== 002 * Orson Charts : a 3D chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C)opyright 2013-2022, by David Gilbert. All rights reserved. 006 * 007 * https://github.com/jfree/orson-charts 008 * 009 * This program is free software: you can redistribute it and/or modify 010 * it under the terms of the GNU General Public License as published by 011 * the Free Software Foundation, either version 3 of the License, or 012 * (at your option) any later version. 013 * 014 * This program is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 017 * GNU General Public License for more details. 018 * 019 * You should have received a copy of the GNU General Public License 020 * along with this program. If not, see <http://www.gnu.org/licenses/>. 021 * 022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 023 * Other names may be trademarks of their respective owners.] 024 * 025 * If you do not wish to be bound by the terms of the GPL, an alternative 026 * commercial license can be purchased. For details, please see visit the 027 * Orson Charts home page: 028 * 029 * http://www.object-refinery.com/orsoncharts/index.html 030 * 031 */ 032 033package org.jfree.chart3d.marker; 034 035import java.awt.BasicStroke; 036import java.awt.Color; 037import java.awt.Font; 038import java.awt.Graphics2D; 039import java.awt.Stroke; 040import org.jfree.chart3d.ChartElement; 041 042/** 043 * A base interface for all markers. 044 * 045 * @since 1.2 046 */ 047public interface Marker extends ChartElement { 048 049 /** The default line stroke for markers. */ 050 Stroke DEFAULT_LINE_STROKE = new BasicStroke(0f, 051 BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); 052 053 /** The default line color for markers. */ 054 Color DEFAULT_LINE_COLOR = Color.DARK_GRAY; 055 056 /** The default fill color for markers. */ 057 Color DEFAULT_FILL_COLOR = new Color(128, 128, 192, 64); 058 059 /** The default font for marker labels. */ 060 Font DEFAULT_MARKER_FONT = new Font(Font.DIALOG, 061 Font.PLAIN, 10); 062 063 /** The default color for the marker labels. */ 064 Color DEFAULT_LABEL_COLOR = Color.BLACK; 065 066 /** 067 * Draws the marker based on the {@code markerData} which has been 068 * passed to the 3D engine to generate the required 2D projection points. 069 * 070 * @param g2 the graphics target ({@code null} not permitted). 071 * @param markerData transient data for the marker ({@code null} not 072 * permitted). 073 * @param reverse a flag to indicate reverse orientation. 074 */ 075 void draw(Graphics2D g2, MarkerData markerData, boolean reverse); 076 077 /** 078 * Registers a listener to receive notification of changes to the marker. 079 * 080 * @param listener the listener ({@code null} not permitted). 081 */ 082 void addChangeListener(MarkerChangeListener listener); 083 084 /** 085 * Deregisters a listener so that it no longer receives notification of 086 * changes to the marker. 087 * 088 * @param listener the listener ({@code null} not permitted). 089 */ 090 void removeChangeListener(MarkerChangeListener listener); 091 092}