xaizek / libcursed (License: GPLv3+) (since 2019-03-16)
C++ classes for dealing with curses.
Clone URLs: https://code.reversed.top/user/xaizek/libcursed ssh://rocketgit@code.reversed.top/user/xaizek/libcursed
master
Commit 1609be549aca6c7895ad46a1b2987bb3568842f4

Fix flicker in Input::peek()
`man wget_wch`:

If the window is not a pad and has been moved or modified since the
last call to wrefresh, wrefresh will be called before another
character is read.

Do `wnoutrefresh()` on auxiliary windows in constructor to avoid the
issue (calling every time before `wget_wch()` doesn't remove the flicker
at least for windows of screen size which is how they are created).
Author: xaizek
Author date (UTC): 2022-02-09 17:30
Committer name: xaizek
Committer date (UTC): 2022-02-09 17:30
Parent(s): dfb643c3de00d30143a3d517f89f3f9808b2560a
Signing key: 99DC5E4DB05F6BE2
Tree: d46a3dce979a31385f1d43d8a2b987c05b895df1
File Lines added Lines deleted
Input.cpp 7 4
File Input.cpp changed (mode: 100644) (index e604f27..bf7cf62)
... ... Input::Input(Keypad keypad)
71 71
72 72 guts::keypad(readWin, keypad == Keypad::Enabled); guts::keypad(readWin, keypad == Keypad::Enabled);
73 73 wtimeout(peekWin, 0); wtimeout(peekWin, 0);
74
75 // `man wget_wch`:
76 // If the window is not a pad and has been moved or modified since the
77 // last call to wrefresh, wrefresh will be called before another character
78 // is read.
79 wnoutrefresh(readWin);
80 wnoutrefresh(peekWin);
74 81 } }
75 82
76 83 InputElement InputElement
77 84 Input::read() Input::read()
78 85 { {
79 // Refresh the window, because otherwise curses clears the screen on call to
80 // `wget_wch()` (why does it do this?).
81 wnoutrefresh(readWin);
82
83 86 std::wint_t wch; std::wint_t wch;
84 87 int status = wget_wch(readWin, &wch); int status = wget_wch(readWin, &wch);
85 88
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