/*
Copyright 2003-2012 GanttProject Team
This file is part of GanttProject, an opensource project management tool.
GanttProject is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GanttProject 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with GanttProject. If not, see <http://www.gnu.org/licenses/>.
*/
package biz.ganttproject.core.chart.text;
import biz.ganttproject.core.chart.canvas.TextMetrics;
import biz.ganttproject.core.chart.canvas.Canvas.Label;
public class TimeUnitText {
public static enum Position {
UPPER_LINE, LOWER_LINE
}
private static final Label[] EMPTY_LABELS = new Label[] { new Label(null, "", 0), new Label(null, "", 0), new Label(null, "", 0) };
private String myLongText;
private String myMediumText;
private String myShortText;
private Object myCalculatorState;
private Label[] myLabels;
public TimeUnitText(String longText, String mediumText, String shortText) {
myLongText = longText;
myMediumText = mediumText;
myShortText = shortText;
}
public TimeUnitText(String mediumText) {
myMediumText = mediumText;
myLongText = mediumText;
myShortText = mediumText;
}
public Label[] getLabels(int requestedMaxLength, TextMetrics calculator) {
if (!calculator.getState().equals(myCalculatorState)) {
myCalculatorState = calculator.getState();
myLabels = new Label[] { new Label(null, myShortText, calculator.getTextLength(myShortText)),
new Label(null, myMediumText, calculator.getTextLength(myMediumText)),
new Label(null, myLongText, calculator.getTextLength(myLongText)) };
}
int fitCount = getFitCount(myLabels, requestedMaxLength);
if (fitCount == 0) {
return EMPTY_LABELS;
}
Label[] result = new Label[fitCount];
System.arraycopy(myLabels, 0, result, 0, fitCount);
return result;
}
private int getFitCount(Label[] allLabels, int maxLength) {
int count = 0;
for (; count < allLabels.length; count++) {
if (allLabels[count].lengthPx > maxLength) {
break;
}
}
return count;
}
@Override
public String toString() {
return "long=" + myLongText + ", medium=" + myMediumText + ", short=" + myShortText;
}
}