mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-14 06:57:01 +00:00
5719b5be2a
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25968 a592a061-630c-0410-9148-cb99ea01b6c8
120 lines
3.0 KiB
C++
120 lines
3.0 KiB
C++
// -*- C++ -*-
|
|
/**
|
|
* \file qt4/GuiSelection.cpp
|
|
* 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 "support/debug.h"
|
|
#include "support/lstrings.h"
|
|
|
|
#include <QApplication>
|
|
#include <QClipboard>
|
|
#include <QString>
|
|
|
|
|
|
namespace lyx {
|
|
namespace frontend {
|
|
|
|
using support::internalLineEnding;
|
|
using support::externalLineEnding;
|
|
|
|
|
|
GuiSelection::GuiSelection()
|
|
: selection_supported_(qApp->clipboard()->supportsSelection()),
|
|
schedule_check_(true)
|
|
{
|
|
connect(qApp->clipboard(), SIGNAL(selectionChanged()),
|
|
this, SLOT(on_dataChanged()));
|
|
}
|
|
|
|
|
|
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.
|
|
//LYXERR(Debug::SELECTION, "GuiSelection: setting dummy selection");
|
|
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.
|
|
// FIXME (gb): This is wrong. What is missing here is rather a call of
|
|
//else
|
|
// qApp->clipboard()->clear(QClipboard::Selection);
|
|
// Since we do not issue this call we rather implement
|
|
// "persistent selections" as far as X is concerned.
|
|
}
|
|
|
|
|
|
docstring const GuiSelection::get() const
|
|
{
|
|
QString const str = qApp->clipboard()->text(QClipboard::Selection)
|
|
.normalized(QString::NormalizationForm_C);
|
|
LYXERR(Debug::SELECTION, "GuiSelection::get: " << str);
|
|
if (str.isNull())
|
|
return docstring();
|
|
|
|
return internalLineEnding(qstring_to_ucs4(str));
|
|
}
|
|
|
|
|
|
void GuiSelection::put(docstring const & str)
|
|
{
|
|
LYXERR(Debug::SELECTION, "GuiSelection::put: " << to_utf8(str));
|
|
|
|
qApp->clipboard()->setText(toqstr(externalLineEnding(str)),
|
|
QClipboard::Selection);
|
|
}
|
|
|
|
|
|
void GuiSelection::on_dataChanged()
|
|
{
|
|
schedule_check_ = true;
|
|
LYXERR(Debug::SELECTION, "GuiSelection::on_dataChanged");
|
|
}
|
|
|
|
|
|
bool GuiSelection::empty() const
|
|
{
|
|
if (!selection_supported_)
|
|
return true;
|
|
|
|
// Cache which is to speed up selection-status read
|
|
// (4 calls when open Edit menu).
|
|
static bool text_selection_empty;
|
|
if (schedule_check_) {
|
|
text_selection_empty = qApp->clipboard()->
|
|
text(QClipboard::Selection).isEmpty();
|
|
schedule_check_ = false;
|
|
}
|
|
|
|
LYXERR(Debug::SELECTION, "GuiSelection::filled: " << !text_selection_empty);
|
|
return text_selection_empty;
|
|
}
|
|
|
|
} // namespace frontend
|
|
} // namespace lyx
|
|
|
|
#include "GuiSelection_moc.cpp"
|