At the moment, we use one large background image for the user to see where about he/she is in the document. This has 2 problems, especially with large documents: * The entire document has to be rendered on startup, which eats terrible amount of time * The bitmap has so bad resolution, that it looks confusing, and is mostly unusable. Instead of one large bitmap, we need several layers that contain tiles of lower and lower resolution. Layer 1: The tiles at 1:1 zoom Layer 2: Tiles at 1:4 Layer 3: Tiles at 1:16 Layer 4: Tiles at 1:64 Layer 5: Tiles at 1:256 ... Layer X: Just 1 tile at 1:4^(X-1) This is not a huge amount of tiles - we are not supposed to keep all of them, we can throw away the ones on X-1 layers variously, as in bug 85846. On startup, the layers should be filled in this way: * First Layer 1 - the tiles that intersect the visible area (so that the user gets the view as the first thing). * Then the some higher layer, like Layer 3, again only the tiles that intersect the visible area + one tile before + one tile after (so that the scrolling immediately gives ~something) * Then (when idle) the higher layers, up to Layer X - so that there is always something to render, without having to fetch it first On scroll, always present the highest quality - can happen to be a combination of various layers, combining the worse and better quality; but fetch the best ones accordingly.
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** Please read this message in its entirety before responding ** To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year. There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present. If you have time, please do the following: Test to see if the bug is still present on a currently supported version of LibreOffice (5.2.5 or 5.3.0 https://www.libreoffice.org/download/ If the bug is present, please leave a comment that includes the version of LibreOffice and your operating system, and any changes you see in the bug behavior If the bug is NOT present, please set the bug's Status field to RESOLVED-WORKSFORME and leave a short comment that includes your version of LibreOffice and Operating System Please DO NOT Update the version field Reply via email (please reply directly on the bug tracker) Set the bug's Status field to RESOLVED - FIXED (this status has a particular meaning that is not appropriate in this case) If you want to do more to help you can test to see if your issue is a REGRESSION. To do so: 1. Download and install oldest version of LibreOffice (usually 3.3 unless your bug pertains to a feature added after 3.3) http://downloadarchive.documentfoundation.org/libreoffice/old/ 2. Test your bug 3. Leave a comment with your results. 4a. If the bug was present with 3.3 - set version to "inherited from OOo"; 4b. If the bug was not present in 3.3 - add "regression" to keyword Feel free to come ask questions or to say hello in our QA chat: http://webchat.freenode.net/?channels=libreoffice-qa Thank you for helping us make LibreOffice even better for everyone! Warm Regards, QA Team MassPing-UntouchedBug-20170306
With editing, this does not make much sense anyway, let's WONTFIX this. I'd be for dropping the background image for good, and instead speed up the tiles generation ;-)