What Is poi-5.2.3.jar?

poi-5.2.3.jar is one of the JAR files for Apache POI 5.2.3, which provides an API for Microsoft document files of Word, Excel, PowerPoint, and Visio.

poi-5.2.3.jar supports Apache POI components that read and write Microsoft's OLE 2 Compound document format, which is used in early versions of Microsoft Office tools like Word 97, Excel 97, PowerPoint 97, etc.

poi-5.2.3.jar is distributed as part of the poi-bin-5.2.3-20220909.zip download file.

JAR File Size and Download Location:

JAR name: poi-5.2.3.jar
Target JDK version: 9

File name: poi.jar, poi-5.2.3.jar
File size: 2964641 bytes
Release date: 09-09-2022
Download: Apache POI Website

Here are Java Source Code files for poi-5.2.3.jar:

⏎ org/apache/poi/sl/image/ImageHeaderPICT.java

/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   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.
==================================================================== */

package org.apache.poi.sl.image;

import java.awt.Dimension;
import java.awt.Rectangle;

import org.apache.poi.util.Internal;
import org.apache.poi.util.Units;

@Internal
public class ImageHeaderPICT {
    /**
     * skip the first 512 bytes - they are MAC specific crap
     */
    public static final int PICT_HEADER_OFFSET = 512;

    public static final double DEFAULT_RESOLUTION = Units.POINT_DPI;

    private static final byte[] V2_HEADER = {
            0x00, 0x11,       // v2 version opcode
            0x02, (byte) 0xFF, // version number of new picture
            0x0C, 0x00,        // header opcode
            (byte) 0xFF, (byte) 0xFE, 0x00, 0x00 // pic size dummy
    };

    private final Rectangle bounds;
    private final double hRes, vRes;

    public ImageHeaderPICT(byte[] data, final int off) {
        // http://mirrors.apple2.org.za/apple.cabi.net/Graphics/PICT.and_QT.INFO/PICT.file.format.TI.txt
        int offset = off;
        // low order 16 bits of picture size - can be ignored
        offset += 2;
        // rectangular bounding box of picture, at 72 dpi
        // rect : 8 bytes (top, left, bottom, right: integer)
        int y1 = readUnsignedShort(data, offset); offset += 2;
        int x1 = readUnsignedShort(data, offset); offset += 2;
        int y2 = readUnsignedShort(data, offset); offset += 2;
        int x2 = readUnsignedShort(data, offset); offset += 2;

        // check for version 2 ... otherwise we don't read any further
        boolean isV2 = true;
        for (byte b : V2_HEADER) {
            if (b != data[offset++]) {
                isV2 = false;
                break;
            }
        }

        if (isV2) {
            // 4 bytes - fixed, horizontal resolution (dpi) of source data
            hRes = readFixedPoint(data, offset); offset += 4;
            // 4 bytes - fixed, vertical resolution (dpi) of source data
            vRes = readFixedPoint(data, offset); offset += 4;
        } else {
            hRes = DEFAULT_RESOLUTION;
            vRes = DEFAULT_RESOLUTION;
        }

        bounds = new Rectangle(x1,y1,x2-x1,y2-y1);
    }

    public Dimension getSize() {
        int height = (int)Math.round(bounds.height*DEFAULT_RESOLUTION/vRes);
        int width = (int)Math.round(bounds.width*DEFAULT_RESOLUTION/hRes);
        return new Dimension(width, height);
    }

    public Rectangle getBounds() {
        return bounds;
    }

    private static int readUnsignedShort(byte[] data, int offset) {
        int b0 = data[offset] & 0xFF;
        int b1 = data[offset+1] & 0xFF;
        return b0 << 8 | b1;
    }

    private static double readFixedPoint(byte[] data, int offset) {
        int b0 = data[offset] & 0xFF;
        int b1 = data[offset+1] & 0xFF;
        int b2 = data[offset+2] & 0xFF;
        int b3 = data[offset+3] & 0xFF;
        int i = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3;
        return i / (double)0x10000;
    }
}

⏎ org/apache/poi/sl/image/ImageHeaderPICT.java

Or download all of them as a single archive file:

File name: poi-5.2.3-src.zip
File size: 2479830 bytes
Release date: 2022-09-09
Download 

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