Importing Scalable Vector Graphics
← Chapter 6. Vector Graphics →

Importing Scalable Vector Graphics

Requirements
Import
Limitations

Requirements

The Tcl-Package tDOM must be present.

The Tcl-Package TkPath 0.2.4 or 0.3 must be present for importing Scalable Vector Graphics in Jeszra.

Only TkPath elements such as prect, pline, ellipse, circle, path, pimage, polyline, ppolygon, lineargradient, radialgradient and from TkPath 0.3 group and style are generated from an imported Scalable Vector Graphics file.

Also install the Tcl-Package Img to deal with Scalable Vector Graphics embedded images.

Import

Jeszra imports Scalable Vector Graphics files into Tcl/Tk. A Scalable Vector Graphics file is opened through the conventional »File Open« dialog. An additional file type:»SVG« is listed in the file types selector.

Missing SVG-File Type:

The SVG-File type only appears when TkPath and tDOM are accessible to Jeszra. Both TkPath versions 0.2.4 and higher or 0.3 and higher can be used with Jeszra.

In situations were TkPath and tDOM are installed and being used by Jeszra, but the SVG-File type is missing: Jeszra allows to customize the project types. This settings is controlled through the global customization variables: 

::rat(settings,File,Extension,Types)
::rat(settings,File,Extension,Types,Open)

either add the SVG-type to the Open variable or delete both variables to regain the default Scalable Vector Graphics import functionality.

Jeszra opens the Scalable Vector Graphics file and imports it into a tDOM based DOM-tree. The DOM-tree will then be parsed and Tcl-code generated from it. A normal Tcl-template is the result from importing a Scalable Vector Graphics file. Canvas windows serve as additional viewports.

Access to the DOM-Tree

The Scalable Vector Graphics DOM-tree can be accessed from within the project shell via the Tcl-variable::dumper::_doc.

Limitations

Jeszra Limitations in respect to Scalable Vector Graphics

Both TkPath 0.2.4 and 0.3 are fully supported by Jeszra.

TkPath 0.3 Limitation in respect to Scalable Vector Graphics

UserSpaceOnUse

UserSpaceOnUse is rather popular in open source Scalable Vector Graphics files. I suppose this popularity is due to presets in other Scalable Vector Graphics creation software and to a lesser extend a deliberate design choice.

ObjectBoundigBox would provide better results in most situations.

Further Limitations for TkPath 0.2.4

Groups and Group-Transformations

Groups require TkPath 0.3 or higher, and are completely ignored for earlier TkPath versions.

← ↖ →
Creating Graphical Objects ↑ Chapter 7. Template Interfaces
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