pylab_ml.misc.iasvg

Created on Fri Mar 4 12:00:27 2022

Create interactive widgets from an svg image.

@author: jung

This lib is based on the following information or other libs:

• https://pypi.org/project/svgelements/ for calculation from the transformation matrix

• animated svg graphics: https://funprojects.blog/2021/12/07/animated-svg-graphics-in-python/

  -> principle adopted for changing text

• selectable image: https://stackoverflow.com/questions/59090988/clickable-svg-image-to-run-method

  • image is not adjusted to the size of the window

  • not applicable to items within an image, because transform from parent missing

• https://forum.qt.io/topic/109025/updating-qgraphicseffect-for-qgraphicssvgitem/6

• QtWidgets.QGraphicsView

  https://doc.qt.io/qt-5/qgraphicsview.html

What is available for reading, writing, manipulating from svg-files:

• svgelements https://github.com/meerk40t/svgelements -> this lib is used in this class

  • more robust as svg.path, include other elements like points, matrix, color

• SVG manipulation within a GUI https://github.com/MoplusplusApp/Moplusplus

• https://doc.qt.io/qtforpython/overviews/graphicsview.html

• svglib

  • only reading SVG files and converting them (to a reasonable degree) to other formats using the ReportLab Open Source toolkit.

• CairoSVG https://cairosvg.org/

  • convert to png, pdf, ps and svg

• svg.path

  • svg.path is a collection of objects that implement the different path commands in SVG, and a parser for SVG path definitions.

• drawSvg

  • A Python 3 library for programmatically generating SVG images (vector drawings) and rendering them or displaying them in a Jupyter notebook.

• svgutils https://svgutils.readthedocs.io/en/latest/transform.html

  • basic svg transformations

Todo

• si units missing

• min,max values for the QDoubleSpinBox

• show combobox for string values

• mouse bewegungen abfangen und setToolTip anzeigen

Classes

InteractiveSvgWidget(svgfilename[, firstname])	Interactive SVG Widget.
SvgIaViewer(parent)	SVG Interactive Viewer
SvgItem(id, renderer[, parent, element])	SvgItem is a QGraphicsSvgItem with some additional functions for interactivity.