From: PeterLValve <peterl@valvesoftware.com>
Date: Wed, 19 Mar 2014 18:19:00 +0000 (-0700)
Subject: UI: Fix issue #21: Resizing of vogleditor window is slow depending on trace size
X-Git-Url: https://git.cworth.org/git?a=commitdiff_plain;h=f5e103c2d629e19724061c4f92d78def3013d5bb;hp=f5e103c2d629e19724061c4f92d78def3013d5bb;p=vogl

UI: Fix issue #21: Resizing of vogleditor window is slow depending on trace size
* If the window is only being resized a small amount (within 20%), the timeline will no longer redraw and simply gets stretched.
* When the timeline is redrawn, it will now only draw one timeline item per pixel instead of many sub-pixel items.
* Fixed an issue that caused 0-duration items from being scaled to 1 instead of the horizontal scale value (which should be the minimum amount of time needed to appear as a single pixel). This greatly reduced the number of items being drawn.
* Fixed deletion of timeline item children.

* These improvements reduced the number of drawn items in one particular trace file from ~5.9 million, down to ~1250 in the default window size. When I stretched the editor across two monitors (giving the timeline more pixels to draw into) this increased to ~4500 items - both very reasonable numbers.
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