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plantuml/src/net/sourceforge/plantuml/sequencediagram/graphic/PageSplitter.java
2023-02-22 19:43:48 +01:00

118 lines
3.8 KiB
Java

/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://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.sequencediagram.graphic;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.sequencediagram.Newpage;
class PageSplitter {
private final double fullHeight;
private final List<Double> positions;
private final List<Display> titles;
private final double headerHeight;
private final double tailHeight;
private final double signatureHeight;
private final double newpageHeight;
private final Display diagramTitle;
PageSplitter(double fullHeight, double headerHeight, Map<Newpage, Double> newpages, double tailHeight,
double signatureHeight, double newpageHeight, Display diagramTitle) {
this.fullHeight = fullHeight;
this.diagramTitle = diagramTitle;
this.titles = new ArrayList<>();
this.positions = new ArrayList<>();
for (Map.Entry<Newpage, Double> ent : newpages.entrySet()) {
titles.add(ent.getKey().getTitle());
positions.add(ent.getValue());
}
this.headerHeight = headerHeight;
this.tailHeight = tailHeight;
this.signatureHeight = signatureHeight;
this.newpageHeight = newpageHeight;
}
public List<Page> getPages() {
if (positions.size() == 0) {
return Arrays.asList(onePage());
}
final List<Page> result = new ArrayList<>();
result.add(firstPage());
for (int i = 0; i < positions.size() - 1; i++) {
result.add(createPage(i));
}
result.add(lastPage());
return result;
}
private Page lastPage() {
final double newpage1 = positions.get(positions.size() - 1) - this.newpageHeight;
final double newpage2 = this.fullHeight - this.tailHeight - this.signatureHeight;
final Display title = titles.get(positions.size() - 1);
return new Page(headerHeight, newpage1, newpage2, tailHeight, signatureHeight, title);
}
private Page firstPage() {
final double newpage1 = this.headerHeight;
final double newpage2 = positions.get(0) + this.newpageHeight;
return new Page(headerHeight, newpage1, newpage2, tailHeight, 0, diagramTitle);
}
private Page onePage() {
final double newpage1 = this.headerHeight;
final double newpage2 = this.fullHeight - this.tailHeight - this.signatureHeight;
return new Page(headerHeight, newpage1, newpage2, tailHeight, signatureHeight, diagramTitle);
}
private Page createPage(int i) {
final double newpage1 = positions.get(i) - this.newpageHeight;
final double newpage2 = positions.get(i + 1) + this.newpageHeight;
final Display title = titles.get(i);
return new Page(headerHeight, newpage1, newpage2, tailHeight, 0, title);
}
}