The 2016.1 release introduces some major updates and improvements of Nevron Map for .NET:
Refined and improved API for working with maps, map data and ESRI shapefiles;
Improved rendering of map arcs (i.e. parallels and meridians);
Additional properties for configuring the appearance of map arcs and their labels;
Improved rendering of map labels;
Ability to change the appearance of the map labels without reimporting the map;
Improved polygon labelling algorithm, which results in nicer labeling of map polygon features like countries, states, lakes, etc.;
Ability to choose the method to use for polygon labeling, the options being: BoundsCenter, Centroid and Optimal;
Improved Orthographic map projection;
Improved map data binding API;
Performance improvements in map import and data binding.
Version 2015 Vol.1
The 2015.1 release introduces the following features and improvements:
Fixed a bug in NDbfReader that was causing OutOfMemoryException when reading invalid DBF files.
ExecuteAllScriptsInDocumentReady - the property controls whether client side scripts always execute on document ready. It is accessible from the ThinWeb.ServerSettings.JQuery object.
Better reporting for exceptions in ThinWeb.
Fixed bug in Balloon Tree Layout that was causing excessive parent-child spacing.
Version 2014 Vol.1
Hardware accelerated rendering
The Diagram control in the suite has been extended to support hardware accelerated rendering. In addition it features additional performance improvements. This makes it ideal for high-speed data acquisition software, signal analyzers, scientific charting, GIS, medical, Big Data BI and other real-time data visualization applications.
Label and legend item improvements
Legend and Data label texts support has been improved with the addition of several properties allowing the user to control the text wrapping and maximum width of texts.
Fine-tuned ThinWeb interactivity
ThinWeb Diagram control's interactivity has been slightly improved with the addition of better mouse capture functionality and new interactivity tools.
Version 2012 Vol.1
ThinWeb Diagram Control
Simple Integration in Different Server environments
Nevron Diagram ThinWeb can be easily integrated in any server side framework including ASP.NET WebForms and MVC.
On the client side the control uses the JQuery library to improve cross browser compatibility. It works with all popular browsers including IE, Firefox, Chrome, Safari and Opera.
Model - View - Controller architecture
The control implements the MVC pattern and provides an API which is consistent with the WinForm MVC implementation of the control. This makes the migration of WinForm applications really easy to the web world.
Efficiency and Extensibility
The server and client side processing of the control are highly optimized, which results in a smoother web experience and less CPU load. At the same time you have great amount of flexibility to extend or customize the control.
Some of the core features of Nevron Diagram ThinWeb control are:
Ability to generate interactive image maps that can redirect the browser to a specified URL, display a tooltip with a customizable class or change the browser cursor.
Ability to intercept client side mouse events per diagram element.
Ability to generate server side events.
Ability to generate postback events.
Support for Diagram Zooming, Scrolling and Panning.
Integrated toolbar with lots of predefined actions.
Version 2011 Vol.1
Layered Graph Layout - the Layered Graph Layout has been improved in terms of performance and compaction.
Flash Export Improvements - Flash export now supports URL redirection through the interactivity style of the shapes.
AutoCAD Export - the Diagram can now be exported in AutoCAD Drawing Interchange Format (DXF).
Visio Shapes Import - users can import Visio XML stencils (*.vsx) in a Nevron library document and use the shapes in any Nevron Diagram.
Improved Performance - the Diagram DOM model has been revised for performance. As a result you should see significant speed improvement when you edit diagram documents both from code and from the designer.
Version 2010 Vol.1
Windows Forms Control Hosting Any Windows Forms control can now be integrated into the drawing document. Drawings that embed windows forms controls can be serialized. WinForm controls serialization is implemented as a design surface (very similar to the one that Visual Studio uses).
Localization Support The diagram is now fully localizable. If you are interested in developing a localized diagramming solution ask us for a localization dictionary or take the time to localize the diagram by yourself, by translating the dictionary provided with Nevron .NET Vision.
Map Improvements - Support for value and range fill rules. This feature helps you colorize any map in a data driven fashion.
- Support data binding to external tables. This feature helps you natively extend the information available for each ESRI shape, by attaching tabular data to maps.
- No need for dBASE driver for reading dbf map data.
Diagram Layout Improvements - Performance improvements in the following layouts: Layered Graph, Orthogonal, Radial, Single Cycle, Balloon.
- Some layouts (for example the Orthogonal Graph Layout) can now take advantage of multicore CPUs to improve performance even more.
- Force directed layouts now have a property MaxTime that determines the maximum time the layout is allowed to operate. When this time is exceeded the layout is interrupted and the results produced by the current iteration are used.
Miscellaneous Improvements - The TextureMapping layout of texture fill styles (Gradient, Advanced Gradient, Hatch and Image) is now honored by path primitives. In RelativeToViewer mode when you rotate shapes the texture will not rotate. In RelativeToObject mode when you rotate shapes textures will rotate too. Older versions rendered path primitives always with RelativeToViewer texture mapping (e.g. RelativeToObject was not supported).
- The drawing preview manager has an option to suppress shape reconnection on shape move and drag and drop. When ReconnectOnMove is true the diagram will behave as it did before - reconnect the moved/drag-dropped shapes. When ReconnectOnMove is false the diagram will not break shape connections on move (1D shapes plugs and 2D shapes outward port connections).
- The NMouseWheelScrollAndZoomTool has been redesigned to allow arbitrary configuration of whether zoom and/or scroll must be performed on normal or control keys modified mouse wheel.
Vector Image Export The diagram can now be exported to the following additional vector image formats: PDF, SWF (Flash), XAML (Silverlight), EMF (Extended Metafile).
Flash Animations When exporting to Flash image format the diagram can now generate animated drawings. Animation options are implemented as a style attribute and are available for each shape.
Version 2009 Vol.1
Support for expandable/collapsible shapes (groups).
Decorators Support for shape decorators. In this release we have implemented the following decorators:
- Frame Decorator - adds a header and background to a shape.
- Expand Collapse Decorator - adds an expand/collapse toggle button to a shape.
- Show Hide Subtree Decorator - adds a show/hide subtree toggle button to a shape.
Support for Table Shapes Table shapes are similar to the tables used in HTML (i.e. each cell can span several rows and/or columns, and may contain images and/or text).
Support for UML Shapes Built upon the Table Shape, they allow the user to create UML class diagrams with ease. The UML shapes also supports different notations for its UML members.
Support for ERM Shapes and Connectors With ERM Shapes and Connectors you can easily display any Entity Relation diagram.
Diagram Layout Improvements
The Balloon Tree Layout supports properties to control the sector angle for the children of the root vertex and the children of the other vertices, as well as the start angle at which to begin the layouting of the shapes.
The Radial and the Single Cycle Layouts allow the user to control their aspect ratio.
The Tip-over Tree Layout supports a different placement specifier for the tree leafs.
The Layered Graph Layout allows the user to specify the position of each node in its layer individually using its Layout Data.
The Layout Context allows the user to specify the shapes and/or groups he wants to layout.
New Diagram Importers (Database and Class Importers)
The Database Importer allows the users to import the entire hierarchy of a database, which makes the task of creating database entity relation diagrams easier than ever before.
The Class Importer allows the users to create complete class hierarchy diagrams based on a given class with only few lines of code.
Fixed Issues and Optimizations
The hit test of diagrams with thousands of shapes has been significantly optimized.
The cloning and binary serialization of user defined tags has been fixed.
The Disconnected event is now raised when you remove a connected shape.
The Random Graph Generator now always generates connected graphs.
Version Q3 2008
Map Import Full featured import of ESRI shape files with support for the following types of projections:
Aitoff, Bonne, Lambert, Behrmann, Tristan, Edwards, Peters, Gall, Balthasart, EckertIV, EckertVI, Equirectangular, Hammer, Kavrayskiy VII, Mercator, MillerCylindrical, Mollweide, Orthographic, Robinson, Stereographic, Van Der Grinten, Wagner VI and Winkel Tripel. The ESRI import can easily be extended to include custom data formatting. For the purpose of displaying maps in diagrams, layers have been extended to support conditional visibility based on the zoom factor. When maps are imported in multiple layers you can define the zoom range in which each particular layer is visible. This helps you implement maps, which support zoom based level-of-detail. For the purpose of maps the NPointElement has been extended to support text. This helps you display geo points as labeled point shapes, which are independent of the zoom factor.
Data Import Support for automatic import of tree and graph data structures from tabular data sources. The new data import feature supports the following data sources: DataTable, DataView, OleDbDataAdapter, SqlDataAdapter, OdbcDataAdapter, OleDbCommand, SqlCommand, OdbcCommand. The data import provides you with the ability to control the data records information shown for each record.
DOM Improvements We have added the NSegmentLabel, which gives you the ability to anchor text to a predefined or custom model segment. The NSegmentLabel can be instructed to keep text upward orientation as well as to follow the segment orientation. Shapes now have the SizeToText method, which attempts to size the shape to the primary (default) label size. The NDrawingDocument has been extended to provide the MeasureStringInWorld and MeasureStringInScene methods.
New Predefined Shapes In this release we have added new shapes in the following shape factories:
- Symbol shapes - 7 new shapes
- Food shapes - 11 new shapes
- Brainstorming shapes - 18 new shapes
Layouts Improvements All graph layouts have been revised to support self loops and bi-links. With this improvements the Nevron Diagram layouts engine is now capable of arranging any type of graph. The compact depth and layered tree layouts have been improved to support plug spacing.
Windows Forms Improvements Following is a list of the new behavior improvements of WinForm views:
- Shift modifies the resize behavior of side handles - when pressed aspect ratio is preserved.
- Shift modifies the resize behavior of corner handles - when pressed aspect ratio is broken.
- We have added support for auto scrolling when the dragged object area hits the window scroll margins.
- We have added the NMouseWheelScrollAndZoomTool. By default the mouse wheel scrolls the drawing view horizontally. When Shift is pressed the view is scrolled vertically. When Control is pressed the view is zoomed in or out. Click the middle mouse button to activate anchor scrolling (similar to MS Internet Explorer, MS Visual Studio, MS Visio etc.).
- We have added the NLibraryWheelScrollTool - it is similar to the NMouseWheelScrollAndZoomTool, but does not support zooming (since library views cannot be zoomed).
Compatible with IIS7 Nevron Diagram now meets the new requirements of IIS7 and can be safely deployed to IIS7 servers.
Dynamic Image Size In AJAX mode the Nevron web controls can be resized dynamically through asynchronous requests.
Image map with Instant Callback Because the Nevron Instant Callback cannot read result data from the server when a request completes, the client side image map cannot be update dynamically. There are cases, though, such as toolbars or other navigation elements, when an image map is required but it does not change over time. Now the Nevron web controls generate an initial image map also when using Instant Callbacks, extending the range of cases, when Instant Callbacks can be used to optimize the application performance.
Version Q2 2008
The following layouts were significantly improved:
Layered Graph Layout - Added support for orthogonal edge routing, with integrated bus spacing, which allows for the generation of very nice looking orthogonal graph drawings. Added support for node alignment options, which help you specify the relative alignment of nodes inside the layer. Added support for different node ranking policies. Added support of in and out plug spacing, which work very well with bus spacing and further increases the drawing readability.
Dock Layout - Added support for different filling and fitting modes.
Orthogonal Graph Layout - Added support for plug spacing.
All layouts were carefully profiled and as a result the layouts now perform much faster.
Improved Documentation The documentation of the component has been improved in order to be more user friendly.
Version Q1 2008
Support for inward–outward port connections In this release we have implemented support for inward-outward ports. This feature lets you interactively glue an outward port to inward port. When an outward port of a shape is connected to an inward port, the shape will translate and rotate together with the shape owning the inward port. The translation aims to match the outward port location to the inward port location. The rotation aims to match both ports direction angles. For each type of port we have provided an extensive set of predefined modes in which a port can automatically determine its direction angle. Custom (user specified) direction angles are supported by all ports. This feature is extremely useful for interactive construction of connected shapes structures without edges. For example: in a floor plan diagram you can have a table with 4 inwards ports designated for the possible places where chairs can be placed. Chairs can have a single outward port. The placement of the chairs around the table is then a matter of simple drag and drop – Nevron Diagram will perform the snapping and glueing of the chairs to the table for you. When you move, rotate or resize the table the chairs will stay on their places.
Powerful support for graph, tree and cells layouts
In this release we have added enterprise quality support for automatic layouts. The layouts are generally grouped in the following categories:
Graph Layouts – perform automatic arrangement of graph vertices and edges. Included the following layouts:
Force Directed Layouts - barycenter, spring and symmetrical. The implementation provides supports for lots of supplemental data provided on per edge and vertex basis. It addresses issues like magnetic fields, gravity force and vertex overlapping. The performance is significantly optimized due to the use of local temperatures. The overall quality of drawing is also improved because of the used global cooling method. It is suitable for any type of graph. Produces straight line graph drawings.
Layered Graph Layout – represents a classical implementation, which layouts a graph in layers. The layout addresses issues like crossing and bending minimization. It is suitable for any type of graph. Produces polyline graph drawings.
Orthogonal Graph Layout – represents a layout, which draws a graph only with horizontal or vertical line segments. The layout addresses issues like crossing minimization, bends minimization and overall compactness of the drawing. It is suitable for any type of graph. Produces orthogonal graph drawings.
Radial Graph Layout - represents a layout, which draws a graph in radial circles. It is suitable for any type of graph. Produces straight line graph drawings.
Tree Layouts – perform automatic arrangement of tree vertices and edges
Layered Tree Layout – layouts a tree in layers. The layout addresses the breadth compaction of the drawing. Produces straight line and orthogonal tree drawings.
Compact Depth Tree Layout – layouts a tree with minimal depth. The layout also addresses the breadth compaction of the drawing. Produces straight line and orthogonal tree drawings.
Tip Over Tree Layout - layouts a tree by placing children in either a row or a col. The row column children placement is controlled on a per vertex basis. Addresses the overall compaction of the drawing. Produces orthogonal tree drawings.
Balloon Tree Layout – layouts the tree in by placing the vertex children in a circular fashion. Addresses the overall compaction of the drawing. Produces straight line tree drawings.
Cell Layouts – perform automatic arrangement of the vertices of a graph
Stack Layout - represents a directed constrained cells layout, which stacks the cells in horizontal or vertical order. Depending on the layout direction the layout is constrained by either width or height.
Flow Layout - represents a directed constrained cells layout, which arranges the cells in horizontal or vertical lanes.
Dock Layout – represents space eating cells layout, which places vertices at per-vertex specified docking areas of the currently available layout area.
Table Layout – represents a directed constrained cells layout, which arranges cells in a tabular manner.
Dynamic image map in AJAX mode
In Q1 2008 Nevron web components now support a dynamic image map that can be automatically updated at the client on every callback. The developer has control over when the image map is generated when is and updated on the client. The dynamic image map allows client side filtering of mouse events and prevents unnecessary callbacks for server side hit testing.
Controller-Tools Architecture in AJAX mode
New AJAX tools Based on the controller-tools architecture, the following tools were added: - Click, double click, mouse down, mouse up, mouse move, mouse over and mouse out callback tools – intercept the mouse events and route them to the server for processing; - Dynamic cursor tool– changes the mouse cursor over interactive visual elements; - Redirect tool– redirects the browser to a specified URL when interactive visual elements are clicked; - Tooltip tool– displays tooltips over interactive visual elements.
Print Manager for Web Forms None of the most popular web browsers is capable of printing really large images. Nevron .NET Vision Q1 2008 introduces a new HTTP handler that generates HTML, suitable for printing.
Version Q4 2007
Visual Studio 2008 Support Q4 2007 release introduces compatibility with Microsoft Visual Studio 2008 and .NET 3.5
Nevron Diagram is now compatible with SQL Server and State Server session state modes.
You can chose from all .NET raster image formats in AJAX mode.
Extended server side interface for AJAX configuration. Now event queueing can be configured at server side.
Added CallbackExecuting and CallbackExecuted events for generalized handling of AJAX callbacks. The INHttpHandlerCallback interface is extedned with OnCallbackExecuting and OnCallbackExecuted methods.
Custom command events in AJAX mode now provide a way to return custom result to the client from within custom command handlers.
Added image map in AJAX mode. Now mouse events interception at client side can be filtered by custom regions, defined when the web control is initialized at the server, saving in this way bandwith and server resources.
Version Q3 2007
Improved AJAX Support for Web Forms (VS 2005 Specific)
Improved browser compatibility.
The Nevron Instant Callback technology was added as an alternative to the MS AJAX Callback, which greatly improves the performance of the web controls.
Configurable event queuing at client side makes mixing of mouse move, mouse click events and auto refresh possible and native to the web site visitors.
Improved behavior of the web controls on communication breakdown; a wait message is displayed and the server is queried periodically for availability; when the connection with the server is reestablished, the web controls continue normal operation.
Improved Web Controls in Postback Mode (VS 2005 Specific) HttpHandler image generation was added as an alternative to the traditional temporary image files used by Nevron web components. Now Nevron web components register an *.AXD virtual file in web.config and stream on demand images to the client through it.
Ability to export images in EMF file format The component can save images in EMF file format as well as to copy EMF images to the clipboard.
Version Q2 2007
AJAX Support for Web Forms Nevron Diagram for .NET Q2 2007 now supports ASP.NET 2.0 AJAX 1.0. Nevron web controls allow AJAX callback handling of the following mouse events: click, double click, move, down and up. Also, the web controls can be forcibly refreshed at client-side and auto-refresh feature is available. For more details on AJAX in Nevron web controls refer the AJAX topic.
Food shapes Included are 22 shapes related to food.
Weather shapes Included are 26 shapes related to weather.
Version Q1 2007
New Shapes Travel shapes - General shapes for displaying travel networks and diagrams.
Improved Visual Studio 2005 Integration Nevron Diagram for .NET VS2005 was designed specifically for Visual Studio 2005, the diagram has seamless IDE integration and easy deployment.
Graph Layouts Layered graph layout – hierarchically arranges graphs. Barycenter graph layout – implements the barycenter layout method. Spring layout – classical layout, which simulates spring and electrical forces. Different coefficients (spring stiffness, length, electrical charge) will be specifiable on a per object basis. Symmetrical layout – implementation of the Fruchertman and Reingold force model. Tries to achieve a symmetrical drawing in which the edges are equal in length. Custom force directed layout – lets you define your own set of forces, or use the currently provided forces.
Common for all force directed layouts are the following constrain forces:
Magnetic field force –impose an orientation of the edges. Magnetic fields can be combined. Supported are parallel, Polar and Concentric magnetic fields. Edge magnetization (bidirectional or unidirectional) can be specified on a per edge basis. Bounce back force – tries to additionally push overlapping vertices apart.
Tree Layouts Layered tree layout – layouts the tree in layers. Tries to improve the breadth tree size. Compact tree layout – layouts the tree by improving both the breadth and depth tree sizes. Does not obey to layering in order to achieve compact tree drawing. Tip-over tree layout – layouts the parent children horizontally or vertically. The parent children arrangement is specified on a per parent basis. Radial tree layout – layouts the tree layers in concentric circles.
The diagram component will support pages. Each page will support different logical and display units, layers etc. The page will be controlled by a formula sheet.
Formula Shapes Nevron diagram will support formula shapes. More details on this feature will be published additionally.
Version Q4 2006
Although in this release there are no major changes in the diagram, there are huge improvements, which Nevron is currently developing for this component. Since they are beyond the scope of a single quarterly release, they will be embedded in the diagram when completely tested and implemented.
Graph Layouts Layered graph layout - hierarchically arranges graphs. Barycenter graph layout - implements the barycenter layout method. Spring layout - classical layout, which simulates spring and electrical forces. Different coefficients (spring stiffness, length, electrical charge) will be specifiable on a per object basis. Symmetrical layout - implementation of the Fruchertman and Reingold force model. Tries to achieve a symmetrical drawing in which the edges are equal in length. Custom force directed layout - lets you define your own set of forces, or use the currently provided forces.
Common for all force directed layouts are the following constrain forces:
Magnetic field force - impose an orientation of the edges. Magnetic fields can be combined. Supported are parallel, Polar and Concentric magnetic fields. Edge magnetization (bidirectional or unidirectional) can be specified on a per edge basis. Bounce back force - tries to additionally push overlapping vertices apart.
Tree Layouts Layered tree layout - layouts the tree in layers. Tries to improve the breadth tree size.
Compact tree layout - layouts the tree by improving both the breadth and depth tree sizes. Does not obey to layering in order to achieve compact tree drawing.
Tip-over tree layout - layouts the parent children horizontally or vertically. The parent children arrangement is specified on a per parent basis.
Radial tree layout - layouts the tree layers in concentric circles.
Pages The diagram component will support pages. Each page will support different logical and display units, layers etc. The page will be controlled by a formula sheet.
Formula Shapes Nevron diagram will support formula shapes. More details on this feature will be published additionally.
Version Q3 2006
Simple Network shapes
Tailored to meet the requirements of the developers, which want to display large network diagrams, which need a low level of detail for the individual network particles.
Electrical Symbols shapes Added were many electical symols shapes, which will facilitate the display of simple and complex electrical schemes.
Floor Plan shapes These shapes target the users, which need to display floor plans. The floor plan shapes are defined in their actual size.
Country Flags shapes General purspose shapes, which represent country flags.
Improvements and API Changes
Nevron Diagram for .NET has been integrated with the new geometry objects in the Nevron Presentation Framework. As a result all properties and methods, which required System.Drawing.RectangleF, System.Drawing.PointF and System.Drawing.SizeF structures have been changed to Nevron.GraphicsCore.NRectangleF, Nevron.GraphicsCore.NPointF and Nevron.GraphicsCore.NSizeF. The Nevron.Diagram.NMatrix2D structure has been changed to Nevron.GraphicsCore.NMatrix2DF structure. This change was made due to needed performance optimizations in the implementation of these fundamental structures and because their current implementation in the .NET framework lacks many important features and properties. One of the major advantages of using the new geometry structures is that the diagram is now better serialized in XML.
[RectangleF in XML]
[NRectangleF in XML]
<Bounds X="0" Y="0" Width="220" Height="220"/>
Version Q2 2006
New features and functionality
Implemented was support for WebForm views. In the context of WebForms the interactive viewing of DOM documents is achieved with WebForm views, which support many image output formats as well as HTML image maps and postback events
Implemented were shape factories, which can help you easily create any predefined shape. Added were more than 180 predefined shapes. All of them are nicely grouped in thematic shape factories
Added was support for stylesheets, which greatly minimize the effort needed to apply consistent styling to your diagrams
Implemented were many graph and tree related algorithms (graph and tree traversal, spanning trees, checks for cyclic, connected graph etc.)
Added was support for circular arc primitives
Improvements in the DOM
You can now instantly convert any 2D shape to 1D shape and vice versa. Plugs are automatically created/destroyed
Elements now store most of their properties in property bags, which minimizes the memory footprint of the diagram
The shape labels, ports and control point collections are now optional. You can create and destroy them as you see fit. In this way the diagram can further be lightened
Improved was the way in which elliptical arcs are defined and edited
Graph management was decoupled from shapes. You can now specify on a per shape basis whether you want a shape to be treated as a logical graph part
Groups are now much easily created - just add the shapes in their shapes collection
Composite shapes are now much easily created - just add the primitives in their primitives collection
The composition and decomposition now preserves the local style formatting
Added was support for primitive shapes. These are shapes, which aggregate a single primitive model and whose behavior is influenced by the primitive they aggregate - for example rectangle shape, ellipse shape, polygon shape etc.
Added was support for form preservation of 1D primitive shapes, when you modify their start and end points
Added was support for 22 different modes in which aggregate models can scale models they aggregate (for example the way in which shapes are resized in groups). The most commonly used are CartesianScaleAndReposition, RepositionOnly and AffineScale
Added was support for element abilities and protection
Added were several new batches. Most of the operations, which views and commands perform with document content go through batches
Improvements in the WinForm views
You can now globally specify what types of trackers must be created for the selected shapes (for example disable the creation of pin point trackers)
You can specify whether reflexive and partially disconnected connectors should be created
Optimized was the initialization performance of documents
Optimized was the update performance of documents
Optimized was the rendering speed (especially of stroke elements with image filter shadows)
Optimized was the hit test speed
Optimized was the masters image generation
Version Q1 2006
Performance The rendering and hit test performance of the product has been significantly improved.
Nevron DOM compliance The product is now fully compliant with the Nevron Document Object Model.
Nevron Persistency compliance The product is now fully compliant with the Nevron Persistency engine, which implements structured serialization in binary, XML, SOAP, Custom Binary and Custom XML formats.
Merged View and Design modes The View and Design modes of the views have been merged. As a result DOM objects can now receive interactive events, while at the same time you can use the view tools to edit the document. You have full control over the priority in which the DOM objects receive interactive events.
New graph edges Implemented were several new types of graph edges the most important ones of which are the routable graph edge and the step3 graph edges.
Improved library management Library documents and library views has been significantly improved. As a result the masters previews are now much more realistic and libraries are very fast to display and edit. You can now view libraries in five modes: icons and names, icons only, icons and details, list and thumbnails.
Improved data exchange The data exchange mechanism has been significantly improved, so that you can now easily extend the component to support different types of data object formats. All you need to do is implement a data object adapt and register it in the document.
Improved routing The build in support for routing has been significantly improved. As a result the routing of routable edges is now much faster and if specified can be automatically performed. Added were a lot of aesthetic considerations in the route finding algorithm such as minimal amount of turns, port orientation etc. You can also specify on a per obstacle basis whether the route can cross the shape only horizontally or vertically.
Improved snapping The support for snapping has been significantly improved. As a result plugs can now snap to ports. You can specify the snap targets for each type of point and you can also control the snap strength of each individual snap target.
Version Q4 2005
Document Object Model
The Document Object Model (DOM) represents the set of objects, which you can use to build a diagramming document. Following is a brief summary of the most important DOM features:
Fully Extensible - you can subclass any DOM object and override its behavior
Interface Based Framework - DOM object features are neatly grouped in interfaces. The framework is in this way decoupled to a large extend from the actual object types in works with
Hierarchical Scene Management - DOM objects reside in hierarchical scenes
Stencils - DOM objects can display reusable content from stencils. Currently provided are arrowheads and point stencils, which can host any model. Stencils are specially optimized to display predefined content
Documents - documents are assembled from stencils, layers and models and can be displayed by multiple views. Currently there are drawing and library documents. Drawing documents support custom drawing scale configuration
Measurement Units - currently supported are three measurement unit systems: GDI+, Metric and English, with complete set of the respective measurement units. You can also plug your own measurement unit systems (for example extend the component to support Japanese measurement units)
Layers - documents content is neatly organized in layers
Styles - the visual appearance of all DOM objects is controlled via inheritable styles
Permissions - any action, which modifies DOM objects, must have the right permissions to do so. Permissions are also inheritable
Models - models are the primary diagram building blocks. Models can be freely transformed
Primitive Models - implemented is a complete set of graphics primitives (strokes, closed figures and texts)
Aggregate Models - aggregate models are assembled from other primitive and/or aggregate models
Shapes - shapes are aggregate models, which represent logical abstractions. Shapes can be involved in complex relationships. Shapes can have multiple ports, plugs and labels. Since any model can represent the geometry of a shape, shapes can even be nested
Graph Management - the DOM provides the necessary means to help you easily manage directed and undirected graphs. In this way the DOM is a powerful tool for graph drawing of any type
Groups - models can be grouped and manipulated as if they were a single model
Routing - models, which represent routes can avoid other models, which represent obstacles. Supported are Poly and HV routing
Persistency - documents can be saved in XML, binary and SOAP format
Printing - documents can be printed on single or multiple pages. Implemented is built in support for print preview
Image Export - an entire document or only portions of it can be exported to image of any type (JPG, PNG, BMP etc.). For documents defined in absolute measurement units (e.g. inches, millimeters etc.) you can also specify the target device resolution (helps you generate ready to print images)
History - the entire DOM API is protected by history. Any property or method, which modifies the DOM objects state records history. The history can contain an unlimited number of actions. History actions can be grouped in transactions. Transactions can be committed or rolled back. Also nested transactions are supported. The history is implemented as a service so you can easily override it, suspend or lock it
Entities - implemented is a large amount of entities, which facilitate batch operations on logically connected sets of nodes. Currently implemented are entities for basic layouts, transformation, translation, replication, format and ZOrder operations
Event Handling - all events are fired from an event sink service, which provides you with the ability to consistently intercept all types of events regardless of the diagram you work with. Interactivity events (mouse, keyboard and drag drop events) support event bubbling
WinForm View, Controller and Tools
In WinForm the viewing and editing of DOM documents is achieved with the help of views and controllers. Following is a brief summary:
Fully Extensible - views, controllers and tools can be extended with ease
Views - views help you display and interactively edit documents. Views are feature rich and help you zoom, pan, stretch and fit documents. Views have powerful control over the displayed document content. Several views can display a single document. Views are highly extensible and can edit numerous DOM object features via interactive editors (trackers). Anything you edit with views is previewed
Controller - a single controller is attached to every view. The controller stores the view selection and provides an easy way to be extended via tools
Tools - tools are replaceable controller parts. Implemented is a myriad of tools, which help you create new DOM objects as well as edit the currently existing ones
Layouts can help you automatically arrange DOM objects. Following is a brief summary:
Fully Extensible - all layouts can easily be extended. You can also create your custom layouts
Layout Clusters - all layouts operate with clusters, which makes it possible for them to arrange multiple structures
Layout Animation - the effect of all layouts can be animated
Tree Layout - implemented is a very powerful tree layout with lots of customization settings
Force Directed Layout - implemented is a generic force directed layout with many customization settings
Table Layout - implemented is a table layout which can order any DOM objects in a tabular manner
DOM content can easily be created with the help of programmable templates. Following is a brief summary:
Fully Extensible - all templates can be easily extended. You can also create your own custom templates
Visual Template Editing - the template editing can be performed visually with the help of the built-in wizard
Diagram Designer Components
Nevron Diagram for .NET implements a complete set of components which can help you create a feature rich diagram designer in minutes. Following is a brief summary:
Commands and Commander - any user action, which can be executed from a menu, toolbar or context menu is represented by a diagram command. Diagram commands are UI independent. Diagram commands are maintained by a commander, which also serves as bridge between Nevron UI and diagram commands
Command Bars Manager - this is a modern look and feel docking bars manager, which visually exposes the power of the Nevron Diagram for .NET with the help of the Nevron UI Suite
Library Browser - the library browser facilitates the library items reuse in drawings. The library browser can display multiple libraries as well as help you create new libraries and edit the currently existing ones
Pan And Zoom Window - in essence it is a control, which provides a bird's-eye view of the document edited in another view (called master view) and also provides you with an easy and intuitive way to zoom and pan the master view
Property Browser - the property browser can help you instantly edit the properties of the document, active layer, selection or the view
Status bar - the status bar is a useful control, which displays important information about the current state of a view