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spanner padding

From: Mark Polesky
Subject: spanner padding
Date: Mon, 3 Nov 2008 13:06:38 -0800 (PST)

Hi everyone.

As usual, I cannot figure out if this is actually a bug, but here goes...

Increasing the left-padding for a DynamicTextSpanner moves the DynamicText to
the right. This seems wrong. Shouldn't the text stay put and the spanner be
shortened? See the attached file/image.

Increasing the right-padding does what I expect, whatever stencil is to the 
right of the spanner stays put, and the spanner is shortened accordingly.

Also, the default value for the left-padding is 0.5, which definitely moves the 
text to the right.

   bound-details (list):

   '((right (attach-dir . -1) (Y . 0) (padding . 0.75))
     (right-broken (attach-dir . 1) (padding . 0.0))
     (left (attach-dir . -1) (Y . 0) (stencil-offset 0 . -0.5) (padding . 0.5))
     (left-broken (attach-dir . 1))) 


I don't have time right now to check the other spanners for this issue, but if 
it's a bug, I'd assume the other spanners may behave similarly.

- Mark


\version "2.11.63-1"

\relative {
    %% this does what I expect -- padding goes between spanner and dynamic:
    \override DynamicTextSpanner #'bound-details #'right #'padding = #2
    %% this doesn't -- padding goes to the left of the "cresc." text:
    \override DynamicTextSpanner #'bound-details #'left #'padding = #2
    c\< c c c | c c c c\f


Attachment: spanner-padding.PNG
Description: PNG image

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