iText7

Question

无法在带有iText7.0.5.0的页面上放置artbox和trimbox

源状态然后页面上只能存在修剪框或ArtBox。 事实并非如此，它们可以同时存在于页面上。

PdfPage.java的第615行

 /**
 * Sets the TrimBox object, that define the intended dimensions of the finished page after trimming.
 *
 * @param rectangle the {@link Rectangle} object to set, expressed in default user space units.
 * @return this {@link PdfPage} instance.
 */
public PdfPage setTrimBox(Rectangle rectangle) {
    if (getPdfObject().getAsRectangle(PdfName.ArtBox) != null) {
        getPdfObject().remove(PdfName.ArtBox);
        Logger logger = LoggerFactory.getLogger(PdfPage.class);
        logger.warn(LogMessageConstant.ONLY_ONE_OF_ARTBOX_OR_TRIMBOX_CAN_EXIST_IN_THE_PAGE);
    }
    put(PdfName.TrimBox, new PdfArray(rectangle));
    return this;
}

    /**
 * Sets the ArtBox object, that define the extent of the page’s meaningful content
 * (including potential white space) as intended by the page’s creator.
 *
 * @param rectangle the {@link Rectangle} object to set, expressed in default user space units.
 * @return this {@link PdfPage} instance.
 */
public PdfPage setArtBox(Rectangle rectangle) {
    if (getPdfObject().getAsRectangle(PdfName.TrimBox) != null) {
        getPdfObject().remove(PdfName.TrimBox);
        Logger logger = LoggerFactory.getLogger(PdfPage.class);
        logger.warn(LogMessageConstant.ONLY_ONE_OF_ARTBOX_OR_TRIMBOX_CAN_EXIST_IN_THE_PAGE);
    }
    put(PdfName.ArtBox, new PdfArray(rectangle));
    return this;
}

提议的解决方案：

  /**
 * Gets the {@link Rectangle} object specified by page's ArtBox, that define the extent of the page’s
 * meaningful content (including potential white space) as intended by the page’s creator.
 *
 * @return the {@link Rectangle} object specified by page's ArtBox, expressed in default user space units.
 *         CropBox by default.
 */
public Rectangle getArtBox() {
    Rectangle artBox = getPdfObject().getAsRectangle(PdfName.ArtBox);
    return artBox == null ? getCropBox() : artBox;
}

/**
 * Sets the TrimBox object, that define the intended dimensions of the finished page after trimming.
 *
 * @param rectangle the {@link Rectangle} object to set, expressed in default user space units.
 * @return this {@link PdfPage} instance.
 */
public PdfPage setTrimBox(Rectangle rectangle) {
    put(PdfName.TrimBox, new PdfArray(rectangle));
    return this;
}