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