2009-05-15 10:49:05: Created issue 'Eliminate separate clear timing from dynamicFlow' nickname Clear timing. owned by Sean Hayes on product DFXP 1.0, description 'I can see no justification for having separate clear timing in any of the examples from John Birchâ€™s original documents (the only hard evidence I can find in the history trail of a design discussion). The notion of a separate clear timer seems to have been added between the March 14 draft and March 21 draft without discussion on the public list. What is more, the presence of a separate clear interval seems at somewhat at odds with the behavioral requirement.
If I have a two line caption region , and I wish to flow the text through it, with text entering at a word rate and leaving at a line rate. Then I donâ€™t want a clear to occur until after two lines have been added, but then I want to clear the lines after each additional line is completed; which implies clear timing canâ€™t start until the region starts to overflow, so the first clear interval needs to be extended, and after that we want the clear interval to be synchronized with the fill interval which is based on irregular length words, so a single value seems inappropriate.
In the example flow below: The first clear/reflow occurs at t14, the next at t20, then at t27 and at t33 (clear intervals of 14, 6, 7 6), then we presumably want to clear the remaining two lines to be cleared in some manner.
t02 Alice was
t06 Alice was beginning to get very
t07 Alice was beginning to get very
t13 Alice was beginning to get very
tired of sitting by her sister on
t14 tired of sitting by her sister on
T19 tired of sitting by her sister on
the bank and of having nothing
T20 the bank and of having nothing
T26 the bank and of having nothing
to do: once or twice she had
T27 to do: once or twice she had
T33 peeped into the book her sister
T34 peeped into the book her sister
' non-public [Sean Hayes]