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e076959f6c
Now that I've got the main calculation code separated from the GTK2 size_request and size_allocate top-level methods, I can introduce a completely different set of GTK3 top-level methods, which run the same underlying calculations but based on different width and height information. So now we do proper height-for-width layout, as you can see if you flip the PuTTY config box to a pane with a wrapping label on it (e.g. Fonts or Logging) and resize the window horizontally. Where the GTK2 config box just left the wrapped text label at its original size, and the GTK3 one before this change would reflow the text but without changing the label's height, now the text reflows and the controls below it move up and down when the number of lines of wrapped text changes. (As far as I'm concerned, that's a nice demo of GTK3's new abilities but not a critically important UI feature for this app. The more important point is that switching to the modern layout model removes one of the remaining uses of the deprecated gtk_widget_size_request.)