Preferences

ViewerHub (is a separate project that will be available soon) is a tool designed for managing server-side Weasis preferences across all native client installations. The preferences are defined in each release package (bin-dist/weasis/conf within weasis-native.zip) and can be modified either through the ViewerHub web portal or via the Weasis protocol with the pro parameter.

Some server-side preferences are applied by Weasis only during the initial launch, as they can later be adjusted in the Weasis user interface. On the other hand, certain server-side preferences are utilized by Weasis during every launch and cannot be modified through the User Interface (client-side).

Changing Preferences in Weasis

Client-Side Preferences

Local preferences can be modified in the following ways:

Through the Weasis User Interface: Navigate to File > Preferences.
Using the Weasis Protocol: Use the weasis:config command with the pro parameter.

Server-Side Preferences

Server-side preferences can be updated using any of the following methods:

Through the ViewerHub Web Portal: Manage preferences directly via the web portal for all users, for user group or for a specific hostname.
By Extending the Configuration File: Create a new JSON file to extend the base.json configuration.

Priority order for loading a property

Here is the priority order to set a property:

Java System property providing from parameters of weasis:config or the launching URI)
Property defined in weasis/conf/xxx.json
The default value of the property (see table below)

Example to change language property (It will work only during the first launch of Weasis on a user session, otherwise delete ${user.home}/.weasis/preferences/).

If you are using weasis-pacs-connector, add the property locale.lang.code:

http://localhost:8080/weasis-pacs-connector/weasis?patientID=9702672&pro="locale.lang.code%20fr_CH"

Add the property in weasis/conf/xxx.json:
```
locale.lang.code=fr_CH
```
The default value is “en_US”

List of Preferences

The preferences listed below are extracted from the base.json file, which is located in the source code.

The properties are grouped into categories (note: not all categories are shown in the list below), and each property includes the following details:

Property Key: The name of the property, used as a key by the viewer.
Default Value: The property’s default value, provided after the arrow. If it is marked as Null, the property is not set by default.
First Badge: The JavaType of the property, indicating its type in Java (String, Integer, Boolean, etc.).
Second Badge: Represents the Type, defining how the viewer handles the property:
- F: Processed only during the viewer’s initial launch as it can be adjusted in the client-side preferences.
- A: Always processed by the viewer.
- AP: Always processed by the viewer but only from base.json or other .json files.
Description: A brief explanation of the property, provided on the second line.

Dicom Category

weasis.aet Null string A
Calling AETitle for DICOM send and Dicomizer publish. ? null means displaying the DICOM calling node combobox otherwise the combo is not displayed and the value is directly used
weasis.dicom.root.uid 2.25 string A
Set values for dicom root UID when creating DICOM objects (KO or PR). See company list at https://www.iana.org/assignments/enterprise-numbers
weasis.download.immediately true boolean F
Start to download series immediately
download.concurrent.series 3 int A
The number of concurrently downloaded series
download.concurrent.series.images 4 int A
The number of concurrently downloaded images in a series

General Category

weasis.theme org.weasis.launcher.FlatWeasisTheme string F
FaltLaf Look and feel, see https://www.formdev.com/flatlaf/themes/
weasis.confirm.closing false boolean F
Show a message of confirmation when closing the application
locale.lang.code en string F
Language code (see Java Locale: https://www.oracle.com/java/technologies/javase/jdk20-suported-locales.html). Default value is "en".
locale.format.code system string F
If value is "system" then the locale of the operating system will be used (in client-side). See Java Locale: https://www.oracle.com/java/technologies/javase/jdk20-suported-locales.html

Launch Category

felix.native.processor.alias.arm_le armv7a string A
Processor alias for 32-bit arm native libraries
weasis.clean.previous.version false boolean A
If true, the bundle cache is cleared when the weasis version has changed from the previous launch
weasis.main.ui weasis-base-ui string A
Application main user interface bundle. Mandatory with the default launcher.
weasis.name Weasis string AP
Change the name of the application everywhere in UI
weasis.profile default string AP
Application profile: when no profile name is provided, the value is "default". It allows having a custom preferences' directory on the client side (will not share preferences with other Weasis instances)
weasis.user Null string AP
Defines a user name to store its own preferences. Null value will be the system user.
weasis.pref.store.local.session Null string AP
Store user preferences when weasis.user is not specified (only with remote preferences service)
flatlaf.uiScale Null string F
Specifies a custom scale factor used to scale the user interface. Allowed values: e.g. 1.5, 1.5x, 150% or 144dpi (96dpi is 100%)
weasis.resources.url ${dollar}{weasis.codebase.url}/resources.zip string A
Application resources (logo, presets, LUTs, dicom annotations configuration...) "resources.zip" is downloaded again only when the last modified date has changed
weasis.show.disclaimer true boolean A
Show a disclaimer at the first launch of Weasis (requires to be accepted to start the application)
weasis.show.release true boolean A
Show a message when the release has changed
weasis.update.release true boolean A
Show a message when a new release is available
weasis.portable.dicom.directory dicom,DICOM,IMAGES,images string A
For loading automatically DICOMs in the portable Weasis distribution (CD/DVD). Comma-separated directories relative to the Weasis executable file.

Log Category

felix.log.level 1 int A
Set the logging levels for OSGI framework 0=None / 1(default)=Error / 2=Warning / 3=Information / 4=Debug
org.apache.sling.commons.log.level INFO string F
Application logging level. This may be any of the defined logging levels TRACE, DEBUG, INFO, WARN, ERROR
org.apache.sling.commons.log.file.activate false boolean F
Activation of rolling log files
org.apache.sling.commons.log.file.number 20 int F
The max number of rolling log files
org.apache.sling.commons.log.file.size 10MB string F
The max size of a rolling log file
org.apache.sling.commons.log.pattern %d{dd.MM.yyyy HH:mm:ss.SSS} *%-5level* [%thread] %logger{36}: %msg%ex{3}%n string F
Log pattern: {0} The timestamp of type java.util.Date, {1} the log marker, {2} the name of the current thread, {3} the name of the logger, {4} the debug level and {5} the actual debug message.
org.apache.sling.commons.log.stack.limit 3 int F
Defines the maximum number of lines for stack trace (0 => NONE, -1 => ALL). Default value is 3
audit.log false boolean A
Audit log for giving statistics about usage of Weasis

Ui Category

weasis.import.images true boolean A
Show the import image toolbar and menu
weasis.import.dicom true boolean A
Show the DICOM import menu and dialog
weasis.import.dicom.qr true boolean A
Show the DICOM Q/R page in the DICOM Export dialog
weasis.export.dicom true boolean A
Show the DICOM export menu and dialog
weasis.export.dicom.send true boolean A
Show the send page in the DICOM Export dialog
weasis.toolbar.mouse.buttons 7170 int A
Show all mouse buttons. Sum of LEFT=1024 + MIDDLE=2048 + RIGHT=4096 + SCROLL=2. Show all:7170 and show none:0.
weasis.all.cinetoolbar.visible false boolean A
Show all the cine toolbars
weasis.all.keyobjecttoolbar.visible false boolean A
Show all the key object toolbars
weasis-dicom-viewer2d.all.rotationtoolbar.visible false boolean A
Show the rotation toolbars in DICOM 2D viewer
weasis.contextmenu.lutShape false boolean A
Show LUT Shape in the contextual menu
weasis.contextmenu.lut false boolean A
Show LUT in the contextual menu
weasis.contextmenu.filter false boolean A
Show Filter in the contextual menu
weasis.plugins.license true boolean A
Show license activation in Help menu

Viewer Category

weasis.color.wl.apply true boolean F
Allow applying Window/Level on color images
weasis.level.inverse true boolean F
Inverse level direction (moving the cursor down to increase brightness
weasis.apply.latest.pr false boolean F
Apply by default the most recent Presentation State to the related image
weasis.force.3d false boolean A
Force to detect a graphic card at every launch
weasis.toolbar.mouse.left winLevel string F
Left mouse button action, possible values: pan|winLevel|sequence|zoom|rotation|measure|drawings|contextMenu|crosshair|none
weasis.toolbar.mouse.middle pan string F
Middle mouse button action, possible values: pan|winLevel|sequence|zoom|rotation|measure|drawings|contextMenu|crosshair|none
weasis.toolbar.mouse.right contextMenu string F
Right mouse button action, possible values: pan|winLevel|sequence|zoom|rotation|measure|drawings|contextMenu|crosshair|none
weasis.toolbar.mouse.wheel sequence string F
Mouse wheel action, possible values: sequence|zoom|rotation|none

Customize resources

The default resources are located:

With ViewerHub you can upload a new package “resources.zip” for a specific release.
For the installed distribution in installedPath/app/resources

How to add DICOM nodes or DICOM printers at the server-side

From the graphical user interface, configure the DICOM printers from File > Print > DICOM Print or DICOM nodes from File > Preferences > Dicom node list
Go to the folder ${user.home}/.weasis/data/weasis-dicom-explorer
Copy the desired configuration files: dicomNodes.xml, dicomPrinterNodes.xml, dicomWebNodes.xml and dicomCallingNodes.xml
Paste at the root path of resources. For web distribution, unzip, place files and zip again.
The new configurations should appear for all the users as non-editable configurations in Weasis