I've been thinking a bit about how to improve the interaction of box and block layout, how to improve columns, and how to do layout for vertical text. I think some improvements to all of them could be made by propagating a symmetric pair of available width and available height as the input to reflow.
(We might even want to take a look at how percentage height quirks should be implemented.) However, we already have nsHTMLReflowState members called availableWidth and availableHeight. But the latter isn't really an input height -- it means "must (page/column) break at or before this height". So these members look like a symmetric pair, but they're not. So before I start talking or thinking too much about any new concept of input / available height, I'd like to rename nsHTMLReflowState::availableHeight. Does this seem reasonable. I'd propose something like "breakHeight" or "maxBreakHeight". (I think the latter meight be good because a fast algorithm for column-distribution could involve "minBreakHeight".) Any better ideas? This isn't necessarily something I plan to get to immediately, but I'm expecting it to be one of my main work items for Mozilla 2, and I'd like to get started thinking about it sooner rather than later. -David -- L. David Baron <URL: http://dbaron.org/ > Technical Lead, Layout & CSS, Mozilla Corporation
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