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/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
UnixUgaInput.c
Abstract:
This file produces the Simple Text In for an Uga window.
This stuff is linked at the hip to the Window, since the window
processing is done in a thread kicked off in UnixUgaImplementation.c
Since the window information is processed in an other thread we need
a keyboard Queue to pass data about. The Simple Text In code just
takes data off the Queue. The WinProc message loop takes keyboard input
and places it in the Queue.
--*/
#include "UnixUga.h"
//
// Simple Text In implementation.
//
EFI_STATUS
EFIAPI
UnixUgaSimpleTextInReset (
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
/*++
Routine Description:
TODO: Add function description
Arguments:
This - TODO: add argument description
ExtendedVerification - TODO: add argument description
Returns:
EFI_SUCCESS - TODO: Add description for return value
--*/
{
UGA_PRIVATE_DATA *Private;
EFI_INPUT_KEY Key;
EFI_TPL OldTpl;
Private = UGA_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);
if (Private->UgaIo == NULL) {
return EFI_SUCCESS;
}
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
//
// A reset is draining the Queue
//
while (Private->UgaIo->UgaGetKey(Private->UgaIo, &Key) == EFI_SUCCESS)
;
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
EFIAPI
UnixUgaSimpleTextInReadKeyStroke (
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
OUT EFI_INPUT_KEY *Key
)
/*++
Routine Description:
TODO: Add function description
Arguments:
This - TODO: add argument description
Key - TODO: add argument description
Returns:
TODO: add return values
--*/
{
UGA_PRIVATE_DATA *Private;
EFI_STATUS Status;
EFI_TPL OldTpl;
Private = UGA_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);
if (Private->UgaIo == NULL) {
return EFI_NOT_READY;
}
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
Status = Private->UgaIo->UgaGetKey(Private->UgaIo, Key);
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
return Status;
}
STATIC
VOID
EFIAPI
UnixUgaSimpleTextInWaitForKey (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
TODO: Add function description
Arguments:
Event - TODO: add argument description
Context - TODO: add argument description
Returns:
TODO: add return values
--*/
{
UGA_PRIVATE_DATA *Private;
EFI_STATUS Status;
EFI_TPL OldTpl;
Private = (UGA_PRIVATE_DATA *) Context;
if (Private->UgaIo == NULL) {
return;
}
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
Status = Private->UgaIo->UgaCheckKey(Private->UgaIo);
if (!EFI_ERROR (Status)) {
//
// If a there is a key in the queue signal our event.
//
gBS->SignalEvent (Event);
}
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
}
EFI_STATUS
UnixUgaInitializeSimpleTextInForWindow (
IN UGA_PRIVATE_DATA *Private
)
/*++
Routine Description:
TODO: Add function description
Arguments:
Private - TODO: add argument description
Returns:
TODO: add return values
--*/
{
EFI_STATUS Status;
//
// Initialize Simple Text In protoocol
//
Private->SimpleTextIn.Reset = UnixUgaSimpleTextInReset;
Private->SimpleTextIn.ReadKeyStroke = UnixUgaSimpleTextInReadKeyStroke;
Status = gBS->CreateEvent (
EFI_EVENT_NOTIFY_WAIT,
EFI_TPL_NOTIFY,
UnixUgaSimpleTextInWaitForKey,
Private,
&Private->SimpleTextIn.WaitForKey
);
return Status;
}
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