[okular] doc: Add documentation on PDF signatures

[Yuri Chornoivan]

Git commit 753719b5b61b69bd1894d814ad1739c1d6b5dd35 by Yuri Chornoivan.
Committed on 14/01/2019 at 17:13.
Pushed by yurchor into branch 'master'.

Add documentation on PDF signatures

M  +-    --    doc/embedded-files-bar.png
M  +-    --    doc/forms-bar.png
M  +38   -1    doc/index.docbook
A  +-    --    doc/signatures-bar.png
A  +-    --    doc/signatures-panel.png

https://commits.kde.org/okular/753719b5b61b69bd1894d814ad1739c1d6b5dd35

diff --git a/doc/embedded-files-bar.png b/doc/embedded-files-bar.png
index be4cb91f9..32a98daf6 100644
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diff --git a/doc/forms-bar.png b/doc/forms-bar.png
index 126eff114..23bea3057 100644
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diff --git a/doc/index.docbook b/doc/index.docbook
index 412501e33..76acb58b2 100644
--- a/doc/index.docbook
+++ b/doc/index.docbook
@@ -34,7 +34,7 @@ Context menu actions like Rename Bookmarks etc.)
 			<!-- TRANS:ROLES_OF_TRANSLATORS -->
 		</authorgroup>
 		<legalnotice>&FDLNotice;</legalnotice>
-		<date>2018-12-23</date>
+		<date>2019-01-14</date>
 		<releaseinfo>1.7 (Applications 19.04)</releaseinfo>
 		<!-- Abstract about this handbook -->
 		<abstract>
@@ -434,6 +434,43 @@ Context menu actions like Rename Bookmarks etc.)
 				to enter data into the form fields.
 			</para>
 		</sect1>
+		<sect1 id="signatures">
+			<title>Signatures</title>
+			<para>
+				If the current document has signatures a bar
+                will appear above the page view after the document opening. It allows you to open the <guilabel>Signatures</guilabel> panel.
+			</para>
+			<screenshot>
+				<screeninfo>The signatures bar</screeninfo>
+				<mediaobject>
+					<imageobject>
+						<imagedata fileref="signatures-bar.png" format="PNG" />
+					</imageobject>
+					<textobject>
+						<phrase>The signatures bar</phrase>
+					</textobject>
+				</mediaobject>
+			</screenshot>
+			<para>
+				Using the <guilabel>Signatures</guilabel> panel you can inspect the document signature and its certificate.
+			</para>
+			<screenshot>
+				<screeninfo>The signatures panel</screeninfo>
+				<mediaobject>
+					<imageobject>
+						<imagedata fileref="signatures-panel.png" format="PNG" />
+					</imageobject>
+					<textobject>
+						<phrase>The signatures panel</phrase>
+					</textobject>
+				</mediaobject>
+			</screenshot>
+			<note>
+				<para>
+					This feature is available for &PDF; documents only. You need to install at least version 0.51 of <ulink url="http://poppler.freedesktop.org/">Poppler</ulink> to get most signature information, version 0.68 to get signature location/reason information, and version 0.73 to get signature certificate information.
+				</para>
+			</note>
+		</sect1>
 		<sect1 id="annotations">
 			<title>Annotations</title>
 			<para>
diff --git a/doc/signatures-bar.png b/doc/signatures-bar.png
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