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package de.lmu.ifi.dbs.elki.visualization.svg;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.Element;
import de.lmu.ifi.dbs.elki.visualization.css.CSSClass;
/**
* Class to draw a button as SVG.
*
* @author Erich Schubert
*/
public class SVGButton {
/**
* Default button color
*/
public static final String DEFAULT_BUTTON_COLOR = SVGConstants.CSS_LIGHTGRAY_VALUE;
/**
* Default text color
*/
public static final String DEFAULT_TEXT_COLOR = SVGConstants.CSS_BLACK_VALUE;
/**
* X position
*/
private double x;
/**
* Y position
*/
private double y;
/**
* Width
*/
private double w;
/**
* Height
*/
private double h;
/**
* Corner rounding factor. NaN = no rounding
*/
private double r = Double.NaN;
/**
* Class for the buttons main CSS
*/
private CSSClass butcss;
/**
* Button title, optional
*/
private String title = null;
/**
* Title styling
*/
private CSSClass titlecss = null;
/**
* Constructor.
*
* @param x Position X
* @param y Position Y
* @param w Width
* @param h Height
* @param r Rounded radius
*/
public SVGButton(double x, double y, double w, double h, double r) {
super();
this.x = x;
this.y = y;
this.w = w;
this.h = h;
this.r = r;
this.butcss = new CSSClass(this, "button");
butcss.setStatement(SVGConstants.CSS_FILL_PROPERTY, DEFAULT_BUTTON_COLOR);
butcss.setStatement(SVGConstants.CSS_STROKE_PROPERTY, SVGConstants.CSS_BLACK_VALUE);
butcss.setStatement(SVGConstants.CSS_STROKE_WIDTH_PROPERTY, ".01");
}
/**
* Produce the actual SVG elements for the button.
*
* @param svgp Plot to draw to
* @return Button wrapper element
*/
public Element render(SVGPlot svgp) {
Element tag = svgp.svgElement(SVGConstants.SVG_G_TAG);
Element button = svgp.svgRect(x, y, w, h);
if(!Double.isNaN(r)) {
SVGUtil.setAtt(button, SVGConstants.SVG_RX_ATTRIBUTE, r);
SVGUtil.setAtt(button, SVGConstants.SVG_RY_ATTRIBUTE, r);
}
SVGUtil.setAtt(button, SVGConstants.SVG_STYLE_ATTRIBUTE, butcss.inlineCSS());
tag.appendChild(button);
// Add light effect:
if (svgp.getIdElement(SVGEffects.LIGHT_GRADIENT_ID) != null) {
Element light = svgp.svgRect(x, y, w, h);
if(!Double.isNaN(r)) {
SVGUtil.setAtt(light, SVGConstants.SVG_RX_ATTRIBUTE, r);
SVGUtil.setAtt(light, SVGConstants.SVG_RY_ATTRIBUTE, r);
}
SVGUtil.setAtt(light, SVGConstants.SVG_STYLE_ATTRIBUTE, "fill:url(#"+SVGEffects.LIGHT_GRADIENT_ID+");fill-opacity:.5");
tag.appendChild(light);
}
// Add shadow effect:
if(svgp.getIdElement(SVGEffects.SHADOW_ID) != null) {
//Element shadow = svgp.svgRect(x + (w * .05), y + (h * .05), w, h);
//SVGUtil.setAtt(button, SVGConstants.SVG_STYLE_ATTRIBUTE, SVGConstants.CSS_FILL_PROPERTY + ":" + SVGConstants.CSS_BLACK_VALUE);
button.setAttribute(SVGConstants.SVG_FILTER_ATTRIBUTE, "url(#" + SVGEffects.SHADOW_ID + ")");
//tag.appendChild(shadow);
}
if(title != null) {
Element label = svgp.svgText(x + w * .5, y + h * .7, title);
label.setAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE, titlecss.inlineCSS());
tag.appendChild(label);
}
return tag;
}
/**
* Set the button title
*
* @param title Button title
* @param textcolor Color
*/
public void setTitle(String title, String textcolor) {
this.title = title;
if(titlecss == null) {
titlecss = new CSSClass(this, "text");
titlecss.setStatement(SVGConstants.CSS_TEXT_ANCHOR_PROPERTY, SVGConstants.CSS_MIDDLE_VALUE);
titlecss.setStatement(SVGConstants.CSS_FILL_PROPERTY, textcolor);
titlecss.setStatement(SVGConstants.CSS_FONT_SIZE_PROPERTY, .6 * h);
}
}
}
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