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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | 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/liberapay (only 1€ per month!)
* https://plantuml.com/paypal
*
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License V2.
*
* THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
* LICENSE ("AGREEMENT"). [GNU General Public License V2]
*
* ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
* RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
*
* You may obtain a copy of the License at
*
* https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* PlantUML can occasionally display sponsored or advertising messages. Those
* messages are usually generated on welcome or error images and never on
* functional diagrams.
* See https://plantuml.com/professional if you want to remove them
*
* Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
* are owned by the author of their corresponding sources code (that is, their
* textual description in PlantUML language). Those images are not covered by
* this GPL v2 license.
*
* The generated images can then be used without any reference to the GPL v2 license.
* It is not even necessary to stipulate that they have been generated with PlantUML,
* although this will be appreciated by the PlantUML team.
*
* There is an exception : if the textual description in PlantUML language is also covered
* by any license, then the generated images are logically covered
* by the very same license.
*
* This is the IGY distribution (Install GraphViz by Yourself).
* You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
* (see https://plantuml.com/graphviz-dot )
*
* Icons provided by OpenIconic : https://useiconic.com/open
* Archimate sprites provided by Archi : http://www.archimatetool.com
* Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
* Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
* ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
* ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
* CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
* Brotli (c) by the Brotli Authors https://github.com/google/brotli
* Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
* Twemoji (c) by Twitter at https://twemoji.twitter.com/
*
*/
package com.plantuml.api.cheerpj.v1;
import static java.nio.charset.StandardCharsets.UTF_8;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics2D;
import java.io.StringReader;
import java.util.Collections;
import java.util.List;
import com.plantuml.api.cheerpj.JsonResult;
import com.plantuml.api.cheerpj.StringBounderCanvas;
import com.plantuml.api.cheerpj.Utils;
import com.plantuml.api.cheerpj.WasmLog;
import net.sourceforge.plantuml.BlockUml;
import net.sourceforge.plantuml.BlockUmlBuilder;
import net.sourceforge.plantuml.ErrorUml;
import net.sourceforge.plantuml.FileFormat;
import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.core.Diagram;
import net.sourceforge.plantuml.error.PSystemError;
import net.sourceforge.plantuml.klimt.color.ColorMapper;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColors;
import net.sourceforge.plantuml.klimt.drawing.g2d.UGraphicG2d;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.klimt.shape.URectangle;
import net.sourceforge.plantuml.preproc.Defines;
public class DirectDraw {
public static Frame frame;
public static Graphics2D g2d;
private static int frameWidth;
private static int frameHeight;
public static Object initArea(int width, int height) {
final long start = System.currentTimeMillis();
WasmLog.start = start;
WasmLog.log("initCanvas");
if (g2d == null) {
frameWidth = width;
frameHeight = height;
frame = new Frame();
frame.setUndecorated(true);
frame.setSize(frameWidth, frameHeight);
frame.setLayout(null);
frame.setVisible(true);
g2d = (Graphics2D) frame.getGraphics();
WasmLog.log("initCanvas done = " + frame);
return 45;
}
WasmLog.log("initCanvas skipped because it has already been done");
return 47;
}
public static Object draw(String mode, String text) {
final long start = System.currentTimeMillis();
WasmLog.start = start;
try {
text = Utils.cleanText(text);
final BlockUmlBuilder builder = new BlockUmlBuilder(Collections.emptyList(), UTF_8,
Defines.createEmpty(), new StringReader(text), null, "string");
List blocks = builder.getBlockUmls();
if (blocks.size() == 0)
return JsonResult.noDataFound(start);
WasmLog.log("...loading data...");
final Diagram system = blocks.get(0).getDiagram();
if (system instanceof PSystemError) {
final ErrorUml error = ((PSystemError) system).getFirstError();
WasmLog.log("[" + error.getPosition() + "] " + error.getError());
return JsonResult.fromError(start, (PSystemError) system);
}
WasmLog.log("...processing...");
final HColor back = HColors.simple(Color.WHITE);
final StringBounder stringBounder = new StringBounderCanvas(g2d);
final UGraphicG2d ug = new UGraphicG2d(back, ColorMapper.IDENTITY, stringBounder, g2d, 1.0, FileFormat.PNG);
WasmLog.log("...cleaning...");
ug.apply(back).apply(back.bg()).draw(URectangle.build(frameWidth, frameHeight));
WasmLog.log("...drawing...");
system.exportDiagramGraphic(ug, new FileFormatOption(FileFormat.PNG));
WasmLog.log("done!");
return JsonResult.ok(start, null, system);
} catch (Throwable t) {
WasmLog.log("Fatal error " + t);
return JsonResult.fromCrash(start, t);
}
}
}