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c293be56bd
In particular, the directory frontends/qt4 is renamed to frontends/qt. Many configurations file have to be updated. All mentions of qt4 in the source have been audited, and changed to qt if necessary. The only part that has not been updated is the CMake build system.
117 lines
2.9 KiB
C++
117 lines
2.9 KiB
C++
// -*- C++ -*-
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/**
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* \file qt/GuiSelection.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author John Levon
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* \author Abdelrazak Younes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "GuiSelection.h"
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#include "qt_helpers.h"
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#include "support/debug.h"
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#include "support/lstrings.h"
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#include <QApplication>
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#include <QClipboard>
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#include <QString>
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namespace lyx {
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namespace frontend {
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GuiSelection::GuiSelection()
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: schedule_check_(true),
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selection_supported_(qApp->clipboard()->supportsSelection())
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{
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connect(qApp->clipboard(), SIGNAL(selectionChanged()),
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this, SLOT(on_dataChanged()));
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}
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void GuiSelection::haveSelection(bool own)
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{
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if (!selection_supported_)
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return;
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// Tell qt that we have a selection by setting a dummy selection.
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// We don't use the interface provided by Qt for setting the
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// selection for performance reasons (see documentation of
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// Selection::put()). Instead we only tell here that we have a
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// selection by setting the selection to the empty string.
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// The real selection is set in GuiApplication::x11EventFilter when
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// an application actually requests it.
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// This way calling Selection::have() is cheap and we can do it as
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// often as we want.
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//LYXERR(Debug::SELECTION, "GuiSelection: setting dummy selection");
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if (own)
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qApp->clipboard()->setText(QString(), QClipboard::Selection);
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// We don't need to do anything if own = false, as this case is
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// handled by QT.
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// FIXME (gb): This is wrong. What is missing here is rather a call of
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//else
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// qApp->clipboard()->clear(QClipboard::Selection);
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// Since we do not issue this call we rather implement
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// "persistent selections" as far as X is concerned.
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}
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docstring const GuiSelection::get() const
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{
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QString const str = qApp->clipboard()->text(QClipboard::Selection)
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.normalized(QString::NormalizationForm_C);
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LYXERR(Debug::SELECTION, "GuiSelection::get: " << str);
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if (str.isNull())
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return docstring();
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return internalLineEnding(str);
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}
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void GuiSelection::put(docstring const & str)
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{
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LYXERR(Debug::SELECTION, "GuiSelection::put: " << to_utf8(str));
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qApp->clipboard()->setText(externalLineEnding(str),
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QClipboard::Selection);
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}
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void GuiSelection::on_dataChanged()
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{
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schedule_check_ = true;
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LYXERR(Debug::SELECTION, "GuiSelection::on_dataChanged");
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}
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bool GuiSelection::empty() const
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{
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if (!selection_supported_)
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return true;
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// Cache which is to speed up selection-status read
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// (4 calls when open Edit menu).
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static bool text_selection_empty;
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if (schedule_check_) {
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text_selection_empty = qApp->clipboard()->
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text(QClipboard::Selection).isEmpty();
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schedule_check_ = false;
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}
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LYXERR(Debug::SELECTION, "GuiSelection::filled: " << !text_selection_empty);
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return text_selection_empty;
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}
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} // namespace frontend
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} // namespace lyx
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#include "moc_GuiSelection.cpp"
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