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43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
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/*!
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\defgroup jkqtmathtext_renderingmodel JKQTMathText Rendering Model
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\ingroup jkqtmathtext_general
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JKQTMathText parses an (LaTeX) input string of mathematicalkmarkup and in a first step generates a memory representation of the it (cf. \ref jkqtmathtext_items ).
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Then this memory representation is used to draw the represented math using the renndering API of <a href="https://doc.qt.io/qt-6/qpainter.html">QPainter</a>.
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As an example, we look at the following LaTeX markup, representing the solution to a quadratic equation:
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\code{.tex}
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$x_{1/2} = \frac{-b\pm\sqrt{b^2-4ac}}{2a}$
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\endcode
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LaTeX itself would render this as follows:
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\image html jkqtmathtext/jkqtmathtext_doc_quadraticeq_latex.png
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JKQTMathText produces this output:
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\image html jkqtmathtext/jkqtmathtext_doc_quadraticeq.png
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The memory representation of the expression above looks like this:
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\image html jkqtmathtext/jkqtmathtext_doc_quadraticeq_tree.png
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\note The memory representation is independent of the actual math markup language (e.g. LaTeX) which was initially parsed.
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But of course it is modelled, so the features of the supported markup languages are supported by the memory model.
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You can see that each node corresponds to a box, if these are overlayed over the rendering:
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\image html jkqtmathtext/jkqtmathtext_doc_quadraticeq_boxes.png
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The box, representing each node, is characterized by its width and height, as well as the ascent (or "baseline-height"):
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\image html jkqtmathtext_node_geo.png
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*/
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