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overlay.cpp
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overlay.cpp
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/*
* Copyright (C) 2018 Intevation GmbH
*
* This file is part of GpgOL.
*
* GpgOL is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* GpgOL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "overlay.h"
#include "common.h"
#include "cpphelp.h"
#include <vector>
#include <gpgme++/context.h>
Overlay::Overlay (HWND wid, const std::string &text): m_wid (wid)
{
// Disable the window early to avoid it beeing closed.
EnableWindow (m_wid, FALSE);
std::vector<std::string> args;
// Collect the arguments
char *gpg4win_dir = get_gpg4win_dir ();
if (!gpg4win_dir)
{
TRACEPOINT;
EnableWindow (m_wid, TRUE);
return;
}
const auto overlayer = std::string (gpg4win_dir) + "\\bin\\overlayer.exe";
xfree (gpg4win_dir);
args.push_back (overlayer);
args.push_back (std::string ("--hwnd"));
args.push_back (std::to_string ((int) (intptr_t) wid));
args.push_back (std::string ("--overlayText"));
args.push_back (text);
char **cargs = vector_to_cArray (args);
m_overlayCtx = GpgME::Context::createForEngine (GpgME::SpawnEngine);
if (!m_overlayCtx)
{
// can't happen
release_cArray (cargs);
TRACEPOINT;
EnableWindow (m_wid, TRUE);
return;
}
GpgME::Data mystderr(GpgME::Data::null);
GpgME::Data mystdout(GpgME::Data::null);
GpgME::Error err = m_overlayCtx->spawnAsync (cargs[0], const_cast <const char**> (cargs),
m_overlayStdin, mystdout, mystderr,
(GpgME::Context::SpawnFlags) (
GpgME::Context::SpawnAllowSetFg |
GpgME::Context::SpawnShowWindow));
release_cArray (cargs);
log_debug ("%s:%s: Created overlay window over %p",
SRCNAME, __func__, wid);
}
Overlay::~Overlay()
{
log_debug ("%s:%s: Stopping overlay.",
SRCNAME, __func__);
m_overlayStdin.write ("quit\n", 5);
m_overlayStdin.write (nullptr, 0);
m_overlayCtx->wait ();
EnableWindow (m_wid, TRUE);
bring_to_front (m_wid);
}

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