mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-09-23 08:39:07 +00:00
690a630c5e
(GuiSelection::haveSelection): Add a big comment what we actually do here, and why. It took me quite some time to figure that out. * src/frontends/Selection.h (haveSelection): Add more detailed documentation git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16527 a592a061-630c-0410-9148-cb99ea01b6c8
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
// -*- C++ -*-
|
|
/**
|
|
* \file qt4/GuiSelection.C
|
|
* This file is part of LyX, the document processor.
|
|
* Licence details can be found in the file COPYING.
|
|
*
|
|
* \author John Levon
|
|
* \author Abdelrazak Younes
|
|
*
|
|
* Full author contact details are available in file CREDITS.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "GuiSelection.h"
|
|
#include "qt_helpers.h"
|
|
|
|
#include "debug.h"
|
|
|
|
#include <QApplication>
|
|
#include <QClipboard>
|
|
#include <QString>
|
|
|
|
#include "support/lstrings.h"
|
|
using lyx::support::internalLineEnding;
|
|
using lyx::support::externalLineEnding;
|
|
|
|
using std::endl;
|
|
|
|
namespace lyx {
|
|
namespace frontend {
|
|
|
|
void GuiSelection::haveSelection(bool own)
|
|
{
|
|
if (!qApp->clipboard()->supportsSelection())
|
|
return;
|
|
|
|
// Tell qt that we have a selection by setting a dummy selection.
|
|
// We don't use the interface provided by Qt for setting the
|
|
// selection for performance reasons (see documentation of
|
|
// Selection::put()). Instead we only tell here that we have a
|
|
// selection by setting the selection to the empty string.
|
|
// The real selection is set in GuiApplication::x11EventFilter when
|
|
// an application actually requests it.
|
|
// This way calling Selection::have() is cheap and we can do it as
|
|
// often as we want.
|
|
if (own)
|
|
qApp->clipboard()->setText(QString(), QClipboard::Selection);
|
|
// We don't need to do anything if own = false, as this case is
|
|
// handled by QT.
|
|
}
|
|
|
|
|
|
docstring const GuiSelection::get() const
|
|
{
|
|
QString const str = qApp->clipboard()->text(QClipboard::Selection);
|
|
lyxerr[Debug::ACTION] << "GuiSelection::get: " << fromqstr(str)
|
|
<< endl;
|
|
if (str.isNull())
|
|
return docstring();
|
|
|
|
return internalLineEnding(qstring_to_ucs4(str));
|
|
}
|
|
|
|
|
|
void GuiSelection::put(docstring const & str)
|
|
{
|
|
lyxerr[Debug::ACTION] << "GuiSelection::put: " << lyx::to_utf8(str) << endl;
|
|
|
|
qApp->clipboard()->setText(toqstr(externalLineEnding(str)),
|
|
QClipboard::Selection);
|
|
}
|
|
|
|
} // namespace frontend
|
|
} // namespace lyx
|