com.itextpdf.kernel.pdf.annot.PdfLinkAnnotation Maven / Gradle / Ivy
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Authors: Bruno Lowagie, Paulo Soares, et al.
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*/
package com.itextpdf.kernel.pdf.annot;
import com.itextpdf.io.logs.IoLogMessageConstant;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfArray;
import com.itextpdf.kernel.pdf.PdfDictionary;
import com.itextpdf.kernel.pdf.PdfName;
import com.itextpdf.kernel.pdf.PdfObject;
import com.itextpdf.kernel.pdf.action.PdfAction;
import com.itextpdf.kernel.pdf.navigation.PdfDestination;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A link annotation represents either a hypertext link to a destination elsewhere in the document
* or an {@link PdfAction} to be performed. See also ISO-320001 12.5.6.5, "Link Annotations".
*/
public class PdfLinkAnnotation extends PdfAnnotation {
private static final Logger logger = LoggerFactory.getLogger(PdfLinkAnnotation.class);
/**
* Highlight modes.
*/
public static final PdfName None = PdfName.N;
public static final PdfName Invert = PdfName.I;
public static final PdfName Outline = PdfName.O;
public static final PdfName Push = PdfName.P;
/**
* Creates a new {@link PdfLinkAnnotation} instance based on {@link PdfDictionary}
* instance, that represents existing annotation object in the document.
*
* @param pdfObject the {@link PdfDictionary} representing annotation object
* @see PdfAnnotation#makeAnnotation(PdfObject)
*/
protected PdfLinkAnnotation(PdfDictionary pdfObject) {
super(pdfObject);
}
/**
* Creates a new {@link PdfLinkAnnotation} instance based on {@link Rectangle}
* instance, that define the location of the annotation on the page in default user space units.
*
* @param rect the {@link Rectangle} that define the location of the annotation
*/
public PdfLinkAnnotation(Rectangle rect) {
super(rect);
}
public PdfName getSubtype() {
return PdfName.Link;
}
/**
* Gets the annotation destination as {@link PdfObject} instance.
*
*
* Destination shall be displayed when the annotation is activated. See also ISO-320001, Table 173.
*
* @return the annotation destination as {@link PdfObject} instance
*/
public PdfObject getDestinationObject() {
return getPdfObject().get(PdfName.Dest);
}
/**
* Sets the annotation destination as {@link PdfObject} instance.
*
*
* Destination shall be displayed when the annotation is activated. See also ISO-320001, Table 173.
*
* @param destination the destination to be set as {@link PdfObject} instance
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setDestination(PdfObject destination) {
if (getPdfObject().containsKey(PdfName.A)) {
getPdfObject().remove(PdfName.A);
logger.warn(IoLogMessageConstant.DESTINATION_NOT_PERMITTED_WHEN_ACTION_IS_SET);
}
if (destination.isArray() && ((PdfArray)destination).get(0).isNumber())
LoggerFactory.getLogger(PdfLinkAnnotation.class).warn(IoLogMessageConstant.INVALID_DESTINATION_TYPE);
return (PdfLinkAnnotation) put(PdfName.Dest, destination);
}
/**
* Sets the annotation destination as {@link PdfDestination} instance.
*
*
* Destination shall be displayed when the annotation is activated. See also ISO-320001, Table 173.
*
* @param destination the destination to be set as {@link PdfDestination} instance
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setDestination(PdfDestination destination) {
return setDestination(destination.getPdfObject());
}
/**
* Removes the annotation destination.
*
*
* Destination shall be displayed when the annotation is activated. See also ISO-320001, Table 173.
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation removeDestination() {
getPdfObject().remove(PdfName.Dest);
return this;
}
/**
* An {@link PdfAction} to perform, such as launching an application, playing a sound,
* changing an annotation’s appearance state etc, when the annotation is activated.
*
* @return {@link PdfDictionary} which defines the characteristics and behaviour of an action
*/
public PdfDictionary getAction() {
return getPdfObject().getAsDictionary(PdfName.A);
}
/**
* Sets a {@link PdfDictionary} representing action to this annotation which will be performed
* when the annotation is activated.
*
* @param action {@link PdfDictionary} that represents action to set to this annotation
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setAction(PdfDictionary action) {
return (PdfLinkAnnotation) put(PdfName.A, action);
}
/**
* Sets a {@link PdfAction} to this annotation which will be performed when the annotation is activated.
*
* @param action {@link PdfAction} to set to this annotation
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setAction(PdfAction action) {
if (getDestinationObject() != null) {
removeDestination();
logger.warn(IoLogMessageConstant.ACTION_WAS_SET_TO_LINK_ANNOTATION_WITH_DESTINATION);
}
return (PdfLinkAnnotation) put(PdfName.A, action.getPdfObject());
}
/**
* Removes a {@link PdfAction} from this annotation.
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation removeAction() {
getPdfObject().remove(PdfName.A);
return this;
}
/**
* Gets the annotation highlight mode.
*
*
* The annotation’s highlighting mode is the visual effect that shall be used when the mouse
* button is pressed or held down inside its active area. See also ISO-320001, Table 173.
*
* @return the name of visual effect
*/
public PdfName getHighlightMode() {
return getPdfObject().getAsName(PdfName.H);
}
/**
* Sets the annotation highlight mode.
*
*
* The annotation’s highlighting mode is the visual effect that shall be used when the mouse
* button is pressed or held down inside its active area. See also ISO-320001, Table 173.
*
* @param hlMode the name of visual effect to be set
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setHighlightMode(PdfName hlMode) {
return (PdfLinkAnnotation) put(PdfName.H, hlMode);
}
/**
* Gets the annotation URI action as {@link PdfDictionary}.
*
*
* When Web Capture (see ISO-320001 14.10, “Web Capture”) changes an annotation from a URI to a
* go-to action, it uses this entry to save the data from the original URI action so that it can
* be changed back in case the target page for the go-to action is subsequently deleted. See also
* ISO-320001, Table 173.
*
* @return the URI action as pdfDictionary
*/
public PdfDictionary getUriActionObject() {
return getPdfObject().getAsDictionary(PdfName.PA);
}
/**
* Sets the annotation URI action as {@link PdfDictionary} instance.
*
*
* When Web Capture (see ISO-320001 14.10, “Web Capture”) changes an annotation from a URI to a
* go-to action, it uses this entry to save the data from the original URI action so that it can
* be changed back in case the target page for the go-to action is subsequently deleted. See also
* ISO-320001, Table 173.
*
* @param action the action to be set
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setUriAction(PdfDictionary action) {
return (PdfLinkAnnotation) put(PdfName.PA, action);
}
/**
* Sets the annotation URI action as {@link PdfAction} instance.
*
*
* A URI action (see ISO-320001 12.6.4.7, “URI Actions”) formerly associated with this annotation.
* When Web Capture (see ISO-320001 14.10, “Web Capture”) changes an annotation from a URI to a
* go-to action, it uses this entry to save the data from the original URI action so that it can
* be changed back in case the target page for the go-to action is subsequently deleted. See also
* ISO-320001, Table 173.
*
* @param action the action to be set
*
* @return this {@link PdfLinkAnnotation} instance
*/
public PdfLinkAnnotation setUriAction(PdfAction action) {
return (PdfLinkAnnotation) put(PdfName.PA, action.getPdfObject());
}
/**
* An array of 8 × n numbers specifying the coordinates of n quadrilaterals in default user space.
* Quadrilaterals are used to define regions inside annotation rectangle
* in which the link annotation should be activated.
*
*
* @return an {@link PdfArray} of 8 × n numbers specifying the coordinates of n quadrilaterals.
*/
public PdfArray getQuadPoints() {
return getPdfObject().getAsArray(PdfName.QuadPoints);
}
/**
* Sets n quadrilaterals in default user space by passing an {@link PdfArray} of 8 × n numbers.
* Quadrilaterals are used to define regions inside annotation rectangle
* in which the link annotation should be activated.
*
* @param quadPoints an {@link PdfArray} of 8 × n numbers specifying the coordinates of n quadrilaterals.
* @return this {@link PdfLinkAnnotation} instance.
*/
public PdfLinkAnnotation setQuadPoints(PdfArray quadPoints) {
return (PdfLinkAnnotation) put(PdfName.QuadPoints, quadPoints);
}
/**
* BS entry specifies a border style dictionary that has more settings than the array specified for the Border
* entry (see {@link PdfAnnotation#getBorder()}). If an annotation dictionary includes the BS entry, then the Border
* entry is ignored. If annotation includes AP (see {@link PdfAnnotation#getAppearanceDictionary()}) it takes
* precedence over the BS entry. For more info on BS entry see ISO-320001, Table 166.
* @return {@link PdfDictionary} which is a border style dictionary or null if it is not specified.
*/
public PdfDictionary getBorderStyle() {
return getPdfObject().getAsDictionary(PdfName.BS);
}
/**
* Sets border style dictionary that has more settings than the array specified for the Border entry ({@link PdfAnnotation#getBorder()}).
* See ISO-320001, Table 166 and {@link #getBorderStyle()} for more info.
* @param borderStyle a border style dictionary specifying the line width and dash pattern that shall be used
* in drawing the annotation’s border.
* @return this {@link PdfLinkAnnotation} instance.
*/
public PdfLinkAnnotation setBorderStyle(PdfDictionary borderStyle) {
return (PdfLinkAnnotation) put(PdfName.BS, borderStyle);
}
/**
* Setter for the annotation's preset border style. Possible values are
*
* - {@link PdfAnnotation#STYLE_SOLID} - A solid rectangle surrounding the annotation.
*
- {@link PdfAnnotation#STYLE_DASHED} - A dashed rectangle surrounding the annotation.
*
- {@link PdfAnnotation#STYLE_BEVELED} - A simulated embossed rectangle that appears to be raised above the surface of the page.
*
- {@link PdfAnnotation#STYLE_INSET} - A simulated engraved rectangle that appears to be recessed below the surface of the page.
*
- {@link PdfAnnotation#STYLE_UNDERLINE} - A single line along the bottom of the annotation rectangle.
*
* See also ISO-320001, Table 166.
* @param style The new value for the annotation's border style.
* @return this {@link PdfLinkAnnotation} instance.
* @see #getBorderStyle()
*/
public PdfLinkAnnotation setBorderStyle(PdfName style) {
return setBorderStyle(BorderStyleUtil.setStyle(getBorderStyle(), style));
}
/**
* Setter for the annotation's preset dashed border style. This property has affect only if {@link PdfAnnotation#STYLE_DASHED}
* style was used for the annotation border style (see {@link #setBorderStyle(PdfName)}.
* See ISO-320001 8.4.3.6, "Line Dash Pattern" for the format in which dash pattern shall be specified.
* @param dashPattern a dash array defining a pattern of dashes and gaps that
* shall be used in drawing a dashed border.
* @return this {@link PdfLinkAnnotation} instance.
*/
public PdfLinkAnnotation setDashPattern(PdfArray dashPattern) {
return setBorderStyle(BorderStyleUtil.setDashPattern(getBorderStyle(), dashPattern));
}
}