Package gaphas :: Module util

Module util

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Helper funtions and classes for Cairo (drawing engine used by the canvas).

Version: $Revision: 1732 $

Functions

text_extents(cr, text, font=None, multiline=False, padding=1)
Simple way to determine the size of a piece of text.

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text_center(cr, x, y, text)

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text_align(cr, x, y, text, align_x=0, align_y=0, padding_x=0, padding_y=0)
Draw text relative to (x, y).

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text_multiline(cr, x, y, text, padding=1)
Draw a string of text with embedded newlines.

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text_set_font(cr, font)
Set the font from a string.

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path_ellipse(cr, x, y, width, height, angle=0)
Draw an ellipse.

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Function Details

text_align(cr, x, y, text, align_x=0, align_y=0, padding_x=0, padding_y=0)

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Draw text relative to (x, y). x, y - coordinates text - text to print (utf8) align_x - -1 (top), 0 (middle), 1 (bottom) align_y - -1 (left), 0 (center), 1 (right) padding_x - padding (extra offset), always > 0 padding_y - padding (extra offset), always > 0

text_multiline(cr, x, y, text, padding=1)

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Draw a string of text with embedded newlines. cr - cairo context x - leftmost x y - topmost y text - text to draw padding - additional padding between lines.

text_set_font(cr, font)

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Set the font from a string. E.g. 'sans 10' or 'sans italic bold 12' only restriction is that the font name should be the first option and the font size as last argument

path_ellipse(cr, x, y, width, height, angle=0)

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Draw an ellipse. x - center x y - center y width - width of ellipse (in x direction when angle=0) height - height of ellipse (in y direction when angle=0) angle - angle in radians to rotate, clockwise