/*******************************************************************************
* Copyright (c) 2001-2005 Sasa Markovic and Ciaran Treanor.
* Copyright (c) 2011 The OpenNMS Group, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*******************************************************************************/
package org.jrobin.graph;
import org.jrobin.core.Util;
import java.awt.*;
class ValueAxisMrtg implements RrdGraphConstants {
private ImageParameters im;
private ImageWorker worker;
private RrdGraphDef gdef;
ValueAxisMrtg(RrdGraph rrdGraph) {
this.im = rrdGraph.im;
this.gdef = rrdGraph.gdef;
this.worker = rrdGraph.worker;
im.unit = gdef.unit;
}
boolean draw() {
Font font = gdef.getFont(FONTTAG_AXIS);
Paint mGridColor = gdef.colors[COLOR_MGRID];
Paint fontColor = gdef.colors[COLOR_FONT];
int labelOffset = (int) (worker.getFontAscent(font) / 2);
if (Double.isNaN((im.maxval - im.minval) / im.magfact)) {
return false;
}
int xLeft = im.xorigin;
int xRight = im.xorigin + im.xsize;
String labfmt;
if (im.scaledstep / im.magfact * Math.max(Math.abs(im.quadrant), Math.abs(4 - im.quadrant)) <= 1.0) {
labfmt = "%5.2f";
}
else {
labfmt = Util.sprintf("%%4.%df", 1 - ((im.scaledstep / im.magfact > 10.0 || Math.ceil(im.scaledstep / im.magfact) == im.scaledstep / im.magfact) ? 1 : 0));
}
if (im.symbol != ' ' || im.unit != null) {
labfmt += " ";
}
if (im.symbol != ' ') {
labfmt += im.symbol;
}
if (im.unit != null) {
labfmt += im.unit;
}
for (int i = 0; i <= 4; i++) {
int y = im.yorigin - im.ysize * i / 4;
if (y >= im.yorigin - im.ysize && y <= im.yorigin) {
String graph_label = Util.sprintf(labfmt, im.scaledstep / im.magfact * (i - im.quadrant));
int length = (int) (worker.getStringWidth(graph_label, font));
worker.drawString(graph_label, xLeft - length - PADDING_VLABEL, y + labelOffset, font, fontColor);
worker.drawLine(xLeft - 2, y, xLeft + 2, y, mGridColor, TICK_STROKE);
worker.drawLine(xRight - 2, y, xRight + 2, y, mGridColor, TICK_STROKE);
worker.drawLine(xLeft, y, xRight, y, mGridColor, GRID_STROKE);
}
}
return true;
}
}