AtlasEngine: Harden against empty target sizes #15615
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lhecker
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How do you test this? With WpfTerminalTestNetCore? I can't reproduce any issues to begin with... |
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lhecker
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Jun 30, 2023
| gsl::narrow_cast<u16>(clamp<til::CoordType>(pixels.height, 1, u16max)), | ||
| }; | ||
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| if (_api.s->targetSize != newSize) |
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This PR now fixes the issue from two directions:
- Avoid ever setting
targetSizeto anything that has a 0 on either width or height
| const auto area = std::min(maxArea, std::min(maxAreaByFont, min)); | ||
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| auto area = std::min(maxAreaByFont, std::max(minAreaByFont, minAreaByGrowth)); | ||
| area = clamp(area, minArea, maxArea); |
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- Avoid reducing
areabelowminAreaat all times
(minArea should probably be called absoluteMinArea or something.)
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The WPF control has a minor bug where it initializes the renderer when there isn't even a window yet. When it then calls `SetWindowSize` it'll pass the result of `GetWindowRect` which is `0,0,0,0`. This made AtlasEngine unhappy because it restricted the glyph atlas size to some multiple of the window size. If the window size is `0,0` then there couldn't be a glyph atlas and so it crashed. ## Validation Steps Performed * Fixes WPF test control crash on startup ✅ (cherry picked from commit a084834) Service-Card-Id: 90012548 Service-Version: 1.18
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The WPF control has a minor bug where it initializes the renderer
when there isn't even a window yet. When it then calls
SetWindowSizeit'll pass the result of
GetWindowRectwhich is0,0,0,0.This made AtlasEngine unhappy because it restricted the glyph atlas
size to some multiple of the window size. If the window size is
0,0then there couldn't be a glyph atlas and so it crashed.
Validation Steps Performed