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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2023, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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.
*
* PlantUML 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*/
package net.sourceforge.plantuml.timingdiagram.graphic;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import net.sourceforge.plantuml.ISkinParam;
import net.sourceforge.plantuml.awt.geom.XDimension2D;
import net.sourceforge.plantuml.awt.geom.XPoint2D;
import net.sourceforge.plantuml.cucadiagram.Display;
import net.sourceforge.plantuml.graphic.AbstractTextBlock;
import net.sourceforge.plantuml.graphic.FontConfiguration;
import net.sourceforge.plantuml.graphic.HorizontalAlignment;
import net.sourceforge.plantuml.graphic.StringBounder;
import net.sourceforge.plantuml.graphic.SymbolContext;
import net.sourceforge.plantuml.graphic.TextBlock;
import net.sourceforge.plantuml.graphic.UDrawable;
import net.sourceforge.plantuml.graphic.color.Colors;
import net.sourceforge.plantuml.style.PName;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.timingdiagram.ChangeState;
import net.sourceforge.plantuml.timingdiagram.TimeConstraint;
import net.sourceforge.plantuml.timingdiagram.TimeTick;
import net.sourceforge.plantuml.timingdiagram.TimingRuler;
import net.sourceforge.plantuml.ugraphic.UGraphic;
import net.sourceforge.plantuml.ugraphic.ULine;
import net.sourceforge.plantuml.ugraphic.URectangle;
import net.sourceforge.plantuml.ugraphic.UStroke;
import net.sourceforge.plantuml.ugraphic.UTranslate;
import net.sourceforge.plantuml.ugraphic.color.HColor;
public class Histogram implements PDrawing {
private final List changes = new ArrayList<>();
private final List constraints = new ArrayList<>();
private List allStates;
private final ISkinParam skinParam;
private final TimingRuler ruler;
private final boolean compact;
private String initialState;
private final TextBlock title;
private final int suggestedHeight;
private final Style style;
private final Style style0;
public Histogram(TimingRuler ruler, ISkinParam skinParam, Collection someStates, boolean compact,
TextBlock title, int suggestedHeight, Style style, Style style0) {
this.style = style;
this.style0 = style0;
this.suggestedHeight = suggestedHeight;
this.ruler = ruler;
this.skinParam = skinParam;
this.allStates = new ArrayList<>(someStates);
this.compact = compact;
this.title = title;
Collections.reverse(allStates);
}
public IntricatedPoint getTimeProjection(StringBounder stringBounder, TimeTick tick) {
final double x = ruler.getPosInPixel(tick);
final List states = getStatesAt(tick);
if (states.size() == 0)
return null;
final double heightForConstraints = getHeightForConstraints(stringBounder);
if (states.size() == 1) {
final double y = yOfState(states.get(0)) + heightForConstraints;
return new IntricatedPoint(new XPoint2D(x, y), new XPoint2D(x, y));
}
assert states.size() == 2;
final double y1 = yOfState(states.get(0)) + heightForConstraints;
final double y2 = yOfState(states.get(1)) + heightForConstraints;
assert y1 != y2;
return new IntricatedPoint(new XPoint2D(x, y1), new XPoint2D(x, y2));
}
private List getStatesAt(TimeTick tick) {
if (changes.size() == 0)
return Collections.emptyList();
for (int i = 0; i < changes.size(); i++) {
final int tickWithCurrentChangeTimeComparisonResult = changes.get(i).getWhen().compareTo(tick);
if (tickWithCurrentChangeTimeComparisonResult == 0) {
if (i == 0 && initialState == null)
return Arrays.asList(changes.get(i).getState());
if (i == 0 && initialState != null)
return Arrays.asList(initialState, changes.get(i).getState());
return Arrays.asList(changes.get(i - 1).getState(), changes.get(i).getState());
}
if (tickWithCurrentChangeTimeComparisonResult > 0) {
final int changeIndex;
if (i == 0) {
// if this time tick was not yet defined in any place, and is less then the
// first one,
// assume it's the leftmost
changeIndex = 0;
} else {
changeIndex = i - 1;
}
return Collections.singletonList(changes.get(changeIndex).getState());
}
}
return Collections.singletonList(changes.get(changes.size() - 1).getState());
}
public void addChange(ChangeState change) {
changes.add(change);
if (change.isCompletelyHidden())
return;
final List states = change.getStates();
for (String state : states)
if (allStates.contains(state) == false)
allStates.add(state);
}
private XPoint2D[] getPoints(int n) {
final ChangeState change = changes.get(n);
final double x = ruler.getPosInPixel(change.getWhen());
final List states = change.getStates();
if (states.size() == 2)
return new XPoint2D[] { new XPoint2D(x, yOfState(states.get(0))),
new XPoint2D(x, yOfState(states.get(1))) };
return new XPoint2D[] { new XPoint2D(x, yOfState(states.get(0))) };
}
private double getPointx(int n) {
final ChangeState change = changes.get(n);
return ruler.getPosInPixel(change.getWhen());
}
private double getPointMinY(int n) {
final List states = changes.get(n).getStates();
if (states.size() == 2)
return Math.min(yOfState(states.get(0)), yOfState(states.get(1)));
return yOfState(states.get(0));
}
private double getPointMaxY(int n) {
final List states = changes.get(n).getStates();
if (states.size() == 2)
return Math.max(yOfState(states.get(0)), yOfState(states.get(1)));
return yOfState(states.get(0));
}
private FontConfiguration getFontConfiguration() {
return FontConfiguration.create(skinParam, style);
}
private UStroke getStroke() {
return style.getStroke();
}
private SymbolContext getContext() {
final HColor lineColor = style.value(PName.LineColor).asColor(skinParam.getIHtmlColorSet());
final HColor backgroundColor = style.value(PName.BackGroundColor).asColor(skinParam.getIHtmlColorSet());
return new SymbolContext(backgroundColor, lineColor).withStroke(getStroke());
}
public TextBlock getPart1(final double fullAvailableWidth) {
return new AbstractTextBlock() {
public void drawU(UGraphic ug) {
drawPart1(ug, fullAvailableWidth);
}
public XDimension2D calculateDimension(StringBounder stringBounder) {
return calculateDimensionPart1(stringBounder);
}
};
}
public UDrawable getPart2() {
return new UDrawable() {
public void drawU(UGraphic ug) {
drawPart2(ug);
}
};
}
private XDimension2D calculateDimensionPart1(StringBounder stringBounder) {
double width = 0;
for (String state : allStates) {
final TextBlock label = getTextBlock(state);
final XDimension2D dim = label.calculateDimension(stringBounder);
width = Math.max(width, dim.getWidth());
}
if (initialState != null)
width += getInitialWidth();
if (compact)
width += title.calculateDimension(stringBounder).getWidth() + 15;
return new XDimension2D(width, getFullHeight(stringBounder));
}
private void drawPart1(UGraphic ug, double fullAvailableWidth) {
final StringBounder stringBounder = ug.getStringBounder();
ug = ug.apply(UTranslate.dy(getHeightForConstraints(stringBounder)));
if (compact) {
final double titleHeight = title.calculateDimension(stringBounder).getHeight();
final double dy = (getFullHeight(stringBounder) - titleHeight) / 2;
title.drawU(ug.apply(UTranslate.dy(dy)));
}
double width = getStatesWidth(stringBounder);
if (initialState != null)
width += getInitialWidth();
if (fullAvailableWidth > width + 5)
ug = ug.apply(UTranslate.dx(fullAvailableWidth - width - 5));
else
ug = ug.apply(UTranslate.dx(fullAvailableWidth - width));
for (String state : allStates) {
final TextBlock label = getTextBlock(state);
final XDimension2D dim = label.calculateDimension(stringBounder);
label.drawU(ug.apply(UTranslate.dy(yOfState(state) - dim.getHeight() / 2 + 1)));
}
}
private double getStatesWidth(StringBounder stringBounder) {
double result = 0;
for (String state : allStates) {
final TextBlock label = getTextBlock(state);
final XDimension2D dim = label.calculateDimension(stringBounder);
result = Math.max(result, dim.getWidth());
}
return result;
}
private void drawPart2(UGraphic ug) {
if (changes.size() == 0)
return;
ug = getContext().apply(ug);
ug = ug.apply(UTranslate.dy(getHeightForConstraints(ug.getStringBounder())));
drawHlines(ug);
drawVlines(ug);
drawLabels(ug);
drawConstraints(ug.apply(UTranslate.dy(-TimeConstraint.getTopMargin())));
}
private void drawHlines(UGraphic ug) {
if (initialState != null)
for (XPoint2D pt : getPoints(0))
drawHLine(ug, getInitialPoint(), getInitialWidth() + pt.getX());
for (int i = 0; i < changes.size(); i++) {
if (changes.get(i).isCompletelyHidden())
continue;
final double x2 = i < changes.size() - 1 ? getPointx(i + 1) : ruler.getWidth();
final double len = x2 - getPointx(i);
final XPoint2D[] points = getPoints(i);
if (points.length == 2)
drawHBlock(ug.apply(changes.get(i).getBackColor(skinParam, style).bg()), points[0], points[1], len);
if (i < changes.size() - 1)
for (XPoint2D pt : points)
drawHLine(ug, pt, len);
}
if (changes.get(changes.size() - 1).isCompletelyHidden() == false) {
for (XPoint2D pt : getPoints(changes.size() - 1)) {
final double len = ruler.getWidth() - pt.getX();
drawHLine(ug, pt, len);
}
}
}
private void drawHBlock(UGraphic ug, XPoint2D pt1, XPoint2D pt2, double len) {
final double minY = Math.min(pt1.getY(), pt2.getY());
final double maxY = Math.max(pt1.getY(), pt2.getY());
final XPoint2D pt = new XPoint2D(pt1.getX(), minY);
ug = ug.apply(new UTranslate(pt));
ug.draw(new URectangle(len, maxY - minY));
for (double x = 0; x < len; x += 5)
ug.apply(UTranslate.dx(x)).draw(ULine.vline(maxY - minY));
}
private void drawHLine(UGraphic ug, final XPoint2D pt, final double len) {
ug.apply(new UTranslate(pt)).draw(ULine.hline(len));
}
private void drawVlines(UGraphic ug) {
if (initialState != null) {
final XPoint2D before = getInitialPoint();
final XPoint2D current = getPoints(0)[0];
ug.apply(new UTranslate(current)).draw(ULine.vline(before.getY() - current.getY()));
}
for (int i = 1; i < changes.size(); i++) {
if (changes.get(i - 1).isCompletelyHidden() || changes.get(i).isCompletelyHidden())
continue;
final double minY = Math.min(getPointMinY(i), getPointMinY(i - 1));
final double maxY = Math.max(getPointMaxY(i), getPointMaxY(i - 1));
ug.apply(new UTranslate(getPointx(i), minY)).draw(ULine.vline(maxY - minY));
}
}
private void drawLabels(UGraphic ug) {
for (int i = 0; i < changes.size(); i++) {
final XPoint2D ptLabel = getPoints(i)[0];
final String comment = changes.get(i).getComment();
if (comment == null)
continue;
final TextBlock label = getTextBlock(comment);
final XDimension2D dim = label.calculateDimension(ug.getStringBounder());
label.drawU(ug.apply(new UTranslate(ptLabel).compose(new UTranslate(2, -dim.getHeight()))));
}
}
private void drawConstraints(UGraphic ug) {
for (TimeConstraint constraint : constraints) {
double y = yOfState(constraint.getTick1());
for (ChangeState change : changes)
if (constraint.containsStrict(change.getWhen()))
y = Math.min(y, yOfState(change.getWhen()));
constraint.drawU(ug.apply(UTranslate.dy(y)), ruler);
}
}
private XPoint2D getInitialPoint() {
return new XPoint2D(-getInitialWidth(), yOfState(initialState));
}
private double getHeightForConstraints(StringBounder stringBounder) {
return TimeConstraint.getHeightForConstraints(stringBounder, constraints);
}
public double getFullHeight(StringBounder stringBounder) {
return getHeightForConstraints(stringBounder) + stepHeight() * (allStates.size() - 1) + getBottomMargin();
}
private double getBottomMargin() {
return 12;
}
private double yOfState(String state) {
final int nb = allStates.size() - 1 - allStates.indexOf(state);
return stepHeight() * nb;
}
private double yOfState(TimeTick when) {
return yOfState(last(getStatesAt(when)));
}
private static String last(List list) {
return list.get(list.size() - 1);
}
private double stepHeight() {
if (suggestedHeight == 0 || allStates.size() <= 1)
return 20;
return suggestedHeight / (allStates.size() - 1);
}
private TextBlock getTextBlock(String value) {
final Display display = Display.getWithNewlines(value);
return display.create(getFontConfiguration(), HorizontalAlignment.LEFT, skinParam);
}
public void setInitialState(String initialState, Colors initialColors) {
this.initialState = initialState;
if (initialState != null && allStates.contains(initialState) == false)
allStates.add(initialState);
}
private double getInitialWidth() {
return 40;
}
public void addConstraint(TimeConstraint constraint) {
this.constraints.add(constraint);
}
}
