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Enlarge the surrounding of a textbox
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! This example introduces the concept of the `textbox`, which is a canvas-like
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structure containing the text and its surrounding path and reference point. We
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demonstrate how to enlarge the surrounding box a little and use it as a
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decoration of the path. ...
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! The `textbox` is a specialized version of the [`box` concept
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../../roadmap.html] which has been introduced into PyX in a preliminary
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version. In the example, we obtain the bounding box (this is a `bbox` instance,
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not to be mixed up with the `box`) and enlarge it a bit. We then draw the path
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! In future releases of PyX, the boxes will have generic support for enlarging.
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The syntax will then be
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tpath = tbox.enlarged(3*unit.x_pt).path()
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! An alternative, geometrically different approach to enlarging the textbox path
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is via an appropriate transformation, such as
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tbox = text.text(0, 0, r"Boxed text", [text.halign.boxcenter, text.valign.middle])
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tpath = tbox.path().transformed(trafo.scale(1.5, 1.5, 0, 0))