thumbnail size issue for pdf

[arpit_gupta]

Hi All,

I am creating thumbnail for a pdf document.
For this i am using default thumbnail 'imgpreview' defined in thumbnail-service-context.xml
i can see in the config file that for 'imgpreview' thumbnail size is defined as 480x480.

But when i create thumbnail, size is 187x132.
i thought that it might be a problem of aspectRatio. and try with setting 'maintainAspectRatio' parameter as false in config.
But it does not affect.

also when i create thumbnail for images with same thumbnail definition('imgpreview'), i got the correct size.
So i am having this problem only for pdf files.

can someone please help me in this.

Thanks,
Arpit

[arpit_gupta]

Problem is very strange i can create pdf thumbnail of bigger size with custom thumbnail definition but i can not do the same with predefined thumbnail definitions. both the definition having same size parameters.

part of the thumbnail-service-context.xml —-

<bean class="org.alfresco.repo.thumbnail.ThumbnailDefinition">
               <property name="name" value="scImageThumbnail" />
               <property name="mimetype" value="image/png"/>
               <property name="transformationOptions">
                  <bean  class="org.alfresco.repo.content.transform.magick.ImageTransformationOptions">
                     <property name="resizeOptions">
                        <bean class="org.alfresco.repo.content.transform.magick.ImageResizeOptions">
                           <property name="width" value="480"/>
                           <property name="height" value="480"/>
                           <property name="maintainAspectRatio" value="true"/>
                           <property name="resizeToThumbnail" value="true" />
                        </bean>
                     </property>
                  </bean>
               </property>
               <property name="runAs" value="System"/>
               <property name="placeHolderResourcePath" value="alfresco/extension/thumbnail/thumbnail_placeholder_scImageThumbnail.png" />
            </bean>

<bean class="org.alfresco.repo.thumbnail.ThumbnailDefinition">
                <property name="name" value="imgpreview" />
                <property name="mimetype" value="image/png"/>
                <property name="transformationOptions">
                   <bean class="org.alfresco.repo.content.transform.magick.ImageTransformationOptions">
                      <property name="resizeOptions">
                         <bean class="org.alfresco.repo.content.transform.magick.ImageResizeOptions">
                            <property name="width" value="480"/>
                            <property name="height" value="480"/>
                            <property name="maintainAspectRatio" value="true"/>
                            <property name="resizeToThumbnail" value="true" />
                            <property name="allowEnlargement" value="false" />
                         </bean>
                      </property>
                   </bean>
                </property>
                <property name="placeHolderResourcePath" value="alfresco/thumbnail/thumbnail_placeholder_imgpreview.png" />
                <property name="runAs" value="System"/>
                <property name="failureHandlingOptions" ref="standardFailureOptions"/>
             </bean>

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with 'scImageThumbnail' i can create pdf with the defined size.
But with 'imgpreview' i can not.

any idea why? or am i missing something.
also for images both the definitions are creating same size thumbnail which is correct?

Thanks,
Arpit

[lista]

Just by looking at your code, the "imgpreview" has the following piece of configuration.

<property name="allowEnlargement" value="false" />‍

If your document is actually smaller then the thumbnail you're trying to create, this could be the cause.

[arpit_gupta]

HI Lista,

It wasn't the case. my documents are atleast 5 times bigger than the thumbnail size.

Though i only have this problem on a window machine now i am on linux and not having this problem.
I think this was the problem of imagemagick installation on my window machine.

Thanks,
Arpit