All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.dslplatform.json.JavaGeomConverter Maven / Gradle / Ivy

There is a newer version: 1.52.1
Show newest version
package com.dslplatform.json;

import java.awt.*;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.*;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;

public abstract class JavaGeomConverter {

	static final JsonReader.ReadObject LocationReader = new JsonReader.ReadObject() {
		@Nullable
		@Override
		public Point2D.Double read(JsonReader reader) throws IOException {
			return reader.wasNull() ? null : deserializeLocation(reader);
		}
	};
	static final JsonWriter.WriteObject LocationWriter = new JsonWriter.WriteObject() {
		@Override
		public void write(JsonWriter writer, @Nullable Point2D value) {
			serializeLocationNullable(value, writer);
		}
	};
	static final JsonReader.ReadObject PointReader = new JsonReader.ReadObject() {
		@Nullable
		@Override
		public Point read(JsonReader reader) throws IOException {
			return reader.wasNull() ? null : deserializePoint(reader);
		}
	};
	static final JsonWriter.WriteObject PointWriter = new JsonWriter.WriteObject() {
		@Override
		public void write(JsonWriter writer, @Nullable Point value) {
			serializePointNullable(value, writer);
		}
	};
	static final JsonReader.ReadObject RectangleReader = new JsonReader.ReadObject() {
		@Nullable
		@Override
		public Rectangle2D.Double read(JsonReader reader) throws IOException {
			return reader.wasNull() ? null : deserializeRectangle(reader);
		}
	};
	static final JsonWriter.WriteObject RectangleWriter = new JsonWriter.WriteObject() {
		@Override
		public void write(JsonWriter writer, @Nullable Rectangle2D value) {
			serializeRectangleNullable(value, writer);
		}
	};
	static final JsonWriter.WriteObject ImageWriter = new JsonWriter.WriteObject() {
		@Override
		public void write(JsonWriter writer, @Nullable Image value) {
			serialize(value, writer);
		}
	};
	static final JsonReader.ReadObject ImageReader = new JsonReader.ReadObject() {
		@Nullable
		@Override
		public BufferedImage read(JsonReader reader) throws IOException {
			return reader.wasNull() ? null : deserializeImage(reader);
		}
	};

	public static void serializeLocationNullable(@Nullable final Point2D value, final JsonWriter sw) {
		if (value == null) {
			sw.writeNull();
		} else {
			serializeLocation(value, sw);
		}
	}

	public static void serializeLocation(final Point2D value, final JsonWriter sw) {
		sw.writeAscii("{\"X\":");
		NumberConverter.serialize(value.getX(), sw);
		sw.writeAscii(",\"Y\":");
		NumberConverter.serialize(value.getY(), sw);
		sw.writeByte(JsonWriter.OBJECT_END);
	}

	public static Point2D.Double deserializeLocation(final JsonReader reader) throws IOException {
		if (reader.last() != '{') {
			//TODO: support compact version [X,Y] without names
			throw reader.newParseError("Expecting '{' for object start");
		}
		byte nextToken = reader.getNextToken();
		if (nextToken == '}') return new Point2D.Double();
		double x = 0;
		double y = 0;
		String name = StringConverter.deserialize(reader);
		nextToken = reader.getNextToken();
		if (nextToken != ':') throw reader.newParseError("Expecting ':' after attribute name");
		reader.getNextToken();
		double value = NumberConverter.deserializeDouble(reader);
		if ("X".equalsIgnoreCase(name)) {
			x = value;
		} else if ("Y".equalsIgnoreCase(name)) {
			y = value;
		}
		while ((nextToken = reader.getNextToken()) == ',') {
			reader.getNextToken();
			name = StringConverter.deserialize(reader);
			nextToken = reader.getNextToken();
			if (nextToken != ':') throw reader.newParseError("Expecting ':' after attribute name");
			reader.getNextToken();
			value = NumberConverter.deserializeDouble(reader);
			if ("X".equalsIgnoreCase(name)) {
				x = value;
			} else if ("Y".equalsIgnoreCase(name)) {
				y = value;
			}
		}
		if (nextToken != '}') throw reader.newParseError("Expecting '}' for object end");
		return new Point2D.Double(x, y);
	}

	public static ArrayList deserializeLocationCollection(final JsonReader reader) throws IOException {
		final ArrayList res = new ArrayList(4);
		reader.deserializeCollection(LocationReader, res);
		return res;
	}

	public static void deserializeLocationCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeCollection(LocationReader, res);
	}

	public static ArrayList deserializeLocationNullableCollection(final JsonReader reader) throws IOException {
		final ArrayList res = new ArrayList(4);
		reader.deserializeNullableCollection(LocationReader, res);
		return res;
	}

	public static void deserializeLocationNullableCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeNullableCollection(LocationReader, res);
	}

	public static void serializePointNullable(@Nullable final Point value, final JsonWriter sw) {
		if (value == null) {
			sw.writeNull();
		} else {
			serializePoint(value, sw);
		}
	}

	public static void serializePoint(final Point value, final JsonWriter sw) {
		sw.writeAscii("{\"X\":");
		NumberConverter.serialize(value.x, sw);
		sw.writeAscii(",\"Y\":");
		NumberConverter.serialize(value.y, sw);
		sw.writeByte(JsonWriter.OBJECT_END);
	}

	public static Point deserializePoint(final JsonReader reader) throws IOException {
		if (reader.last() != '{') throw reader.newParseError("Expecting '{' for object start");
		byte nextToken = reader.getNextToken();
		if (nextToken == '}') return new Point();
		int x = 0;
		int y = 0;
		String name = StringConverter.deserialize(reader);
		nextToken = reader.getNextToken();
		if (nextToken != ':') throw reader.newParseError("Expecting ':' after attribute name");
		reader.getNextToken();
		int value = NumberConverter.deserializeInt(reader);
		if ("X".equalsIgnoreCase(name)) {
			x = value;
		} else if ("Y".equalsIgnoreCase(name)) {
			y = value;
		}
		while ((nextToken = reader.getNextToken()) == ',') {
			reader.getNextToken();
			name = StringConverter.deserialize(reader);
			nextToken = reader.getNextToken();
			if (nextToken != ':') throw reader.newParseError("Expecting ':' after attribute name");
			reader.getNextToken();
			value = NumberConverter.deserializeInt(reader);
			if ("X".equalsIgnoreCase(name)) {
				x = value;
			} else if ("Y".equalsIgnoreCase(name)) {
				y = value;
			}
		}
		if (nextToken != '}') throw reader.newParseError("Expecting '}' for object end");
		return new Point(x, y);

	}

	@SuppressWarnings("unchecked")
	public static ArrayList deserializePointCollection(final JsonReader reader) throws IOException {
		return reader.deserializeCollection(PointReader);
	}

	public static void deserializePointCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeCollection(PointReader, res);
	}

	@SuppressWarnings("unchecked")
	public static ArrayList deserializePointNullableCollection(final JsonReader reader) throws IOException {
		return reader.deserializeNullableCollection(PointReader);
	}

	public static void deserializePointNullableCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeNullableCollection(PointReader, res);
	}

	public static void serializeRectangleNullable(@Nullable final Rectangle2D value, final JsonWriter sw) {
		if (value == null) {
			sw.writeNull();
		} else {
			serializeRectangle(value, sw);
		}
	}

	public static void serializeRectangle(final Rectangle2D value, final JsonWriter sw) {
		sw.writeAscii("{\"X\":");
		NumberConverter.serialize(value.getX(), sw);
		sw.writeAscii(",\"Y\":");
		NumberConverter.serialize(value.getY(), sw);
		sw.writeAscii(",\"Width\":");
		NumberConverter.serialize(value.getWidth(), sw);
		sw.writeAscii(",\"Height\":");
		NumberConverter.serialize(value.getHeight(), sw);
		sw.writeByte(JsonWriter.OBJECT_END);
	}

	public static Rectangle2D.Double deserializeRectangle(final JsonReader reader) throws IOException {
		if (reader.last() != '{') throw reader.newParseError("Expecting '{' for object start");
		byte nextToken = reader.getNextToken();
		if (nextToken == '}') return new Rectangle2D.Double();
		double x = 0;
		double y = 0;
		double width = 0;
		double height = 0;
		String name = StringConverter.deserialize(reader);
		nextToken = reader.getNextToken();
		if (nextToken != ':') throw reader.newParseError("Expecting ':' after attribute name");
		reader.getNextToken();
		double value = NumberConverter.deserializeDouble(reader);
		if ("X".equalsIgnoreCase(name)) {
			x = value;
		} else if ("Y".equalsIgnoreCase(name)) {
			y = value;
		} else if ("Width".equalsIgnoreCase(name)) {
			width = value;
		} else if ("Height".equalsIgnoreCase(name)) {
			height = value;
		}
		while ((nextToken = reader.getNextToken()) == ',') {
			reader.getNextToken();
			name = StringConverter.deserialize(reader);
			nextToken = reader.getNextToken();
			if (nextToken != ':') throw reader.newParseError("Expecting ':' after attribute name");
			reader.getNextToken();
			value = NumberConverter.deserializeDouble(reader);
			if ("X".equalsIgnoreCase(name)) {
				x = value;
			} else if ("Y".equalsIgnoreCase(name)) {
				y = value;
			} else if ("Width".equalsIgnoreCase(name)) {
				width = value;
			} else if ("Height".equalsIgnoreCase(name)) {
				height = value;
			}
		}
		if (nextToken != '}') throw reader.newParseError("Expecting '}' for object end");
		return new Rectangle2D.Double(x, y, width, height);
	}

	public static ArrayList deserializeRectangleCollection(final JsonReader reader) throws IOException {
		final ArrayList res = new ArrayList(4);
		reader.deserializeCollection(RectangleReader, res);
		return res;
	}

	public static void deserializeRectangleCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeCollection(RectangleReader, res);
	}

	public static ArrayList deserializeRectangleNullableCollection(final JsonReader reader) throws IOException {
		final ArrayList res = new ArrayList(4);
		reader.deserializeNullableCollection(RectangleReader, res);
		return res;
	}

	public static void deserializeRectangleNullableCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeNullableCollection(RectangleReader, res);
	}

	public static void serialize(@Nullable final Image value, final JsonWriter sw) {
		if (value == null) {
			sw.writeNull();
			return;
		}
		final RenderedImage image;
		if (value instanceof RenderedImage) {
			image = (RenderedImage) value;
		}
		else {
			final BufferedImage bufferedImage = new BufferedImage(value.getWidth(null), value.getHeight(null), BufferedImage.TYPE_4BYTE_ABGR);
			final Graphics bGr = bufferedImage.createGraphics();
			bGr.drawImage(value, 0, 0, null);
			bGr.dispose();
			image = bufferedImage;
		}
		final ByteArrayOutputStream baos = new ByteArrayOutputStream();
		try {
			javax.imageio.ImageIO.write(image, "png", baos);
			BinaryConverter.serialize(baos.toByteArray(), sw);
		}
		catch (final IOException e) {
			throw new SerializationException(e);
		}
	}

	public static BufferedImage deserializeImage(final JsonReader reader) throws IOException {
		final byte[] content = BinaryConverter.deserialize(reader);
		return javax.imageio.ImageIO.read(new java.io.ByteArrayInputStream(content));
	}

	@SuppressWarnings("unchecked")
	public static ArrayList deserializeImageCollection(final JsonReader reader) throws IOException {
		return reader.deserializeCollection(ImageReader);
	}

	public static void deserializeImageCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeCollection(ImageReader, res);
	}

	@SuppressWarnings("unchecked")
	public static ArrayList deserializeImageNullableCollection(final JsonReader reader) throws IOException {
		return reader.deserializeNullableCollection(ImageReader);
	}

	public static void deserializeImageNullableCollection(final JsonReader reader, final Collection res) throws IOException {
		reader.deserializeNullableCollection(ImageReader, res);
	}
}




© 2015 - 2024 Weber Informatics LLC | Privacy Policy