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Simplify check for Alt-Numpad

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Create two new inline functions is_alt_numpad_key(PINPUT_RECORD) and
is_alt_numpad_event(PINPUT_RECORD) which contain the actual checks.
Call these functions from fhandler_console::read and peek_console for
better readability.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2017-01-19 21:41:21 +01:00
parent 9985cf66e9
commit 3b7b65b2f8
3 changed files with 35 additions and 39 deletions
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29
winsup/cygwin/fhandler_console.cc
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@ -7,7 +7,6 @@ Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <dinput.h>
#include "miscfuncs.h"
#include <stdio.h>
#include <stdlib.h>
@ -399,33 +398,16 @@ fhandler_console::read (void *pv, size_t& buflen)
break;
}
#define ich (input_rec.Event.KeyEvent.uChar.AsciiChar)
#define wch (input_rec.Event.KeyEvent.uChar.UnicodeChar)
/* Ignore key up events, except for left alt events with non-zero character
*/
/* Ignore key up events, except for Alt+Numpad events. */
if (!input_rec.Event.KeyEvent.bKeyDown &&
/*
Event for left alt, with a non-zero character, comes from
"alt + numerics" key sequence.
e.g. <left-alt> 0233 => &eacute;
*/
!(wch != 0
// ?? experimentally determined on an XP system
&& virtual_key_code == VK_MENU
// left alt -- see http://www.microsoft.com/hwdev/tech/input/Scancode.asp
&& input_rec.Event.KeyEvent.wVirtualScanCode == 0x38))
!is_alt_numpad_event (&input_rec))
continue;
/* Ignore Alt+Numpad keys. These are used to enter codepoints not
available in the current keyboard layout. They are eventually
handled below after releasing the Alt key. For details see
http://www.fileformat.info/tip/microsoft/enter_unicode.htm */
/* Ignore Alt+Numpad keys. They are eventually handled below after
releasing the Alt key. */
if (input_rec.Event.KeyEvent.bKeyDown
&& wch == 0
&& input_rec.Event.KeyEvent.dwControlKeyState == LEFT_ALT_PRESSED
&& input_rec.Event.KeyEvent.wVirtualScanCode >= DIK_NUMPAD7
&& input_rec.Event.KeyEvent.wVirtualScanCode <= DIK_NUMPAD0
&& input_rec.Event.KeyEvent.wVirtualScanCode != DIK_SUBTRACT)
&& is_alt_numpad_key (&input_rec))
continue;
if (control_key_state & SHIFT_PRESSED)
@ -510,7 +492,6 @@ fhandler_console::read (void *pv, size_t& buflen)
con.nModifiers &= ~4;
}
}
#undef ich
#undef wch
break;