2a13891970
Keep scroll distance consistent when scrolling up and down with horizontal modifier as when scrolling left to right. Scroll horizonally by half a page so that no sections of the canvas are skipped when scrolling. Scroll by half a page rather than a step like when scrolling in the track canvas area as it is a summary area so larger steps seem acceptable and having it use the same scroll distance as when scrolling in the track canvas seems pointless as you would then just scroll in the track canvas area.
Please see the Ardour web site at http://ardour.org/ for all documentation..
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http://ardour.org/development.html