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140 lines
4.5 KiB
Java
140 lines
4.5 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2024, Arnaud Roques
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*
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* Project Info: https://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* https://plantuml.com/patreon (only 1$ per month!)
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* https://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*
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*/
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package com.plantuml.api.cheerpj.v1;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import java.awt.Color;
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import java.awt.Frame;
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import java.awt.Graphics2D;
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import java.io.StringReader;
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import java.util.Collections;
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import java.util.List;
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import com.plantuml.api.cheerpj.JsonResult;
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import com.plantuml.api.cheerpj.StringBounderCanvas;
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import com.plantuml.api.cheerpj.Utils;
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import com.plantuml.api.cheerpj.WasmLog;
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import net.sourceforge.plantuml.BlockUml;
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import net.sourceforge.plantuml.BlockUmlBuilder;
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import net.sourceforge.plantuml.ErrorUml;
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import net.sourceforge.plantuml.FileFormat;
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import net.sourceforge.plantuml.FileFormatOption;
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import net.sourceforge.plantuml.core.Diagram;
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import net.sourceforge.plantuml.error.PSystemError;
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import net.sourceforge.plantuml.klimt.color.ColorMapper;
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import net.sourceforge.plantuml.klimt.color.HColor;
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import net.sourceforge.plantuml.klimt.color.HColors;
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import net.sourceforge.plantuml.klimt.drawing.g2d.UGraphicG2d;
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import net.sourceforge.plantuml.klimt.font.StringBounder;
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import net.sourceforge.plantuml.klimt.shape.URectangle;
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import net.sourceforge.plantuml.preproc.Defines;
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public class DirectDraw {
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public static Frame frame;
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public static Graphics2D g2d;
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private static int frameWidth;
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private static int frameHeight;
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public static Object initArea(int width, int height) {
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final long start = System.currentTimeMillis();
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WasmLog.start = start;
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WasmLog.log("initCanvas");
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if (g2d == null) {
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frameWidth = width;
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frameHeight = height;
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frame = new Frame();
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frame.setUndecorated(true);
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frame.setSize(frameWidth, frameHeight);
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frame.setLayout(null);
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frame.setVisible(true);
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g2d = (Graphics2D) frame.getGraphics();
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WasmLog.log("initCanvas done = " + frame);
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return 45;
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}
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WasmLog.log("initCanvas skipped because it has already been done");
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return 47;
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}
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public static Object draw(String mode, String text) {
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final long start = System.currentTimeMillis();
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WasmLog.start = start;
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try {
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text = Utils.cleanText(text);
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final BlockUmlBuilder builder = new BlockUmlBuilder(Collections.<String>emptyList(), UTF_8,
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Defines.createEmpty(), new StringReader(text), null, "string");
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List<BlockUml> blocks = builder.getBlockUmls();
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if (blocks.size() == 0)
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return JsonResult.noDataFound(start);
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WasmLog.log("...loading data...");
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final Diagram system = blocks.get(0).getDiagram();
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if (system instanceof PSystemError) {
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final ErrorUml error = ((PSystemError) system).getFirstError();
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WasmLog.log("[" + error.getPosition() + "] " + error.getError());
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return JsonResult.fromError(start, (PSystemError) system);
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}
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WasmLog.log("...processing...");
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final HColor back = HColors.simple(Color.WHITE);
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final StringBounder stringBounder = new StringBounderCanvas(g2d);
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final UGraphicG2d ug = new UGraphicG2d(back, ColorMapper.IDENTITY, stringBounder, g2d, 1.0, FileFormat.PNG);
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WasmLog.log("...cleaning...");
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ug.apply(back).apply(back.bg()).draw(URectangle.build(frameWidth, frameHeight));
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WasmLog.log("...drawing...");
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system.exportDiagramGraphic(ug, new FileFormatOption(FileFormat.PNG));
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WasmLog.log("done!");
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return JsonResult.ok(start, null, system);
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} catch (Throwable t) {
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WasmLog.log("Fatal error " + t);
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return JsonResult.fromCrash(start, t);
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}
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}
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}
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