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Handle some weird edge cases of Win32 API

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Sometimes the viewport srWindow may report an invalid rectangle where
the top row is below the bottom one.
This commit is contained in:
LemonBoy
2021-03-12 17:14:50 +01:00
parent b5a50a26eb
commit b0724a350f
1 changed files with 7 additions and 5 deletions
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12
lib/std/Progress.zig
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@@ -210,13 +210,15 @@ fn refreshWithHeldLock(self: *Progress) void {
saved_cursor_pos = info.dwCursorPosition;
const window_height = @intCast(windows.DWORD, info.srWindow.Bottom - info.srWindow.Top) + 1;
const window_width = @intCast(windows.DWORD, info.srWindow.Right - info.srWindow.Left) + 1;
const window_height = @intCast(windows.DWORD, info.srWindow.Bottom - info.srWindow.Top + 1);
const window_width = @intCast(windows.DWORD, info.srWindow.Right - info.srWindow.Left + 1);
// Number of terminal cells to clear, starting from the cursor position
// and ending at the window bottom right corner.
const fill_chars = window_width * (window_height -
@intCast(windows.DWORD, info.dwCursorPosition.Y - info.srWindow.Top)) -
@intCast(windows.DWORD, info.dwCursorPosition.X - info.srWindow.Left);
const fill_chars = if (window_width == 0 or window_height == 0) 0 else chars: {
break :chars window_width * (window_height -
@intCast(windows.DWORD, info.dwCursorPosition.Y - info.srWindow.Top)) -
@intCast(windows.DWORD, info.dwCursorPosition.X - info.srWindow.Left);
};
var written: windows.DWORD = undefined;
if (windows.kernel32.FillConsoleOutputAttribute(