net.sourceforge.plantuml.sequencediagram.graphic.PageSplitter Maven / Gradle / Ivy

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PlantUML is a component that allows to quickly write diagrams from text.

There is a newer version: 1.2025.0

// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
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 positions;
	private final List 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 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 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 getPages() {

		if (positions.size() == 0) {
			return Arrays.asList(onePage());
		}
		final List 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);
	}

}