net.sourceforge.plantuml.klimt.shape.TextBlockSimple 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.klimt.shape;

import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.FontConfiguration;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.sprite.SpriteContainer;
import net.sourceforge.plantuml.regex.MyPattern;

public final class TextBlockSimple extends AbstractTextBlock implements TextBlock {
    // ::remove file when __HAXE__

	private List lines;

	private final Display texts;
	private final FontConfiguration fontConfiguration;
	private final HorizontalAlignment horizontalAlignment;
	private final SpriteContainer spriteContainer;
	private final double maxMessageSize;

	public TextBlockSimple(Display texts, FontConfiguration fontConfiguration, HorizontalAlignment horizontalAlignment,
			SpriteContainer spriteContainer, double maxMessageSize) {
		this.texts = texts;
		this.fontConfiguration = fontConfiguration;
		this.horizontalAlignment = horizontalAlignment;
		this.spriteContainer = spriteContainer;
		this.maxMessageSize = maxMessageSize;
	}

	private List getLines(StringBounder stringBounder) {
		if (lines == null) {
			if (stringBounder == null)
				throw new IllegalStateException();

			this.lines = new ArrayList<>();
			for (CharSequence s : texts)
				addInLines(stringBounder, s.toString());

		}
		return lines;
	}

	private void addInLines(StringBounder stringBounder, String s) {
		if (maxMessageSize == 0) {
			addSingleLine(s);
		} else if (maxMessageSize > 0) {
			final StringTokenizer st = new StringTokenizer(s, " ", true);
			final StringBuilder currentLine = new StringBuilder();
			while (st.hasMoreTokens()) {
				final String token = st.nextToken();
				final double w = getTextWidth(stringBounder, currentLine + token);
				if (w > maxMessageSize) {
					addSingleLineNoSpace(currentLine.toString());
					currentLine.setLength(0);
					if (token.startsWith(" ") == false)
						currentLine.append(token);
				} else
					currentLine.append(token);

			}
			addSingleLineNoSpace(currentLine.toString());
		} else if (maxMessageSize < 0) {
			final StringBuilder currentLine = new StringBuilder();
			for (int i = 0; i < s.length(); i++) {
				final char c = s.charAt(i);
				final double w = getTextWidth(stringBounder, currentLine.toString() + c);
				if (w > -maxMessageSize) {
					addSingleLineNoSpace(currentLine.toString());
					currentLine.setLength(0);
					if (c != ' ')
						currentLine.append(c);

				} else {
					currentLine.append(c);
				}
			}
			addSingleLineNoSpace(currentLine.toString());
		}
	}

	private void addSingleLineNoSpace(String s) {
		if (s.length() == 0 || MyPattern.mtches(s, "^[%s]*$ ")) {
			return;
		}
		lines.add(SingleLine.withSomeHtmlTag(s, fontConfiguration, horizontalAlignment, spriteContainer));
	}

	private void addSingleLine(String s) {
		lines.add(SingleLine.withSomeHtmlTag(s, fontConfiguration, horizontalAlignment, spriteContainer));
	}

	private double getTextWidth(StringBounder stringBounder, String s) {
		final Line line = SingleLine.withSomeHtmlTag(s, fontConfiguration, horizontalAlignment, spriteContainer);
		return line.calculateDimension(stringBounder).getWidth();
	}

	public XDimension2D calculateDimension(StringBounder stringBounder) {
		return getTextDimension(stringBounder);
	}

	protected final XDimension2D getTextDimension(StringBounder stringBounder) {
		double width = 0;
		double height = 0;
		for (Line line : getLines(stringBounder)) {
			final XDimension2D size2D = line.calculateDimension(stringBounder);
			height += size2D.getHeight();
			width = Math.max(width, size2D.getWidth());
		}
		return new XDimension2D(width, height);
	}

	public void drawU(UGraphic ug) {
		double y = 0;
		final XDimension2D dimText = getTextDimension(ug.getStringBounder());

		for (Line line : getLines(ug.getStringBounder())) {
			final HorizontalAlignment lineHorizontalAlignment = line.getHorizontalAlignment();
			double deltaX = 0;
			if (lineHorizontalAlignment == HorizontalAlignment.CENTER) {
				final double diff = dimText.getWidth() - line.calculateDimension(ug.getStringBounder()).getWidth();
				deltaX = diff / 2.0;
			} else if (lineHorizontalAlignment == HorizontalAlignment.RIGHT) {
				final double diff = dimText.getWidth() - line.calculateDimension(ug.getStringBounder()).getWidth();
				deltaX = diff;
			}
			line.drawU(ug.apply(new UTranslate(deltaX, y)));
			y += line.calculateDimension(ug.getStringBounder()).getHeight();
		}
	}

}