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Review request for Marble. Repository: marble Description ------- QDoesn't change functionality. Does clarify the code as flow was very non-intuitive previously (especially in case when deltaLevel > 8 for tileSize = 256). if/when the scaledLowerLevelTile "for" loop reached zoom level where 2^deltaLevel > tileSize, a peculiar thing was happening. In this situation, in part "// which rect to scale?", the image was copied first from 0 sized-image. Calling the QImage::copy function with null rectangle (or 0 width and 0 height) results in copying a whole image instead. As a result, instead of level_N tile, a level_N-9 (or later) tile was returned unscaled, resulting in curious displays (i.e. multiple copies of the same tile image). While for textures that are downloadable this was a temporary case, offline textures would just stop there and display this curious images. Additionally it was very unclear and took me some time to figure out what's happening. This version does clearly what previously was done due to specific QImage::copy behaviour. Let's discuss if this behaviour is desired (or we want to display a full white opaque tile or a tile with a loading icon if there are download urls etc.). Diffs ----- src/lib/marble/TileLoader.cpp 01994eb Diff: https://git.reviewboard.kde.org/r/123306/diff/ Testing ------- Tested with zooming in and out and two layers of texture as well as one. No change noticed (as intended). Thanks, Adam Dabrowski
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