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33a9bb161e
* src/frontends/Clipboard.h (empty): Clarify documentation * src/frontends/qt4/GuiClipboard.C (GuiClipboard::empty): Consider also the LyX version, since the text version is empty if there is only one inset in the clipboard. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17297 a592a061-630c-0410-9148-cb99ea01b6c8
130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
// -*- C++ -*-
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/**
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* \file qt4/GuiClipboard.C
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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 "GuiClipboard.h"
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#include "qt_helpers.h"
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#include "debug.h"
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#include <QApplication>
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#include <QClipboard>
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#include <QMimeData>
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#include <QString>
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#include "support/lstrings.h"
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using lyx::support::internalLineEnding;
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using lyx::support::externalLineEnding;
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using std::endl;
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using std::string;
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namespace {
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char const * const mime_type = "application/x-lyx";
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}
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namespace lyx {
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namespace frontend {
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string const GuiClipboard::getAsLyX() const
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{
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lyxerr[Debug::ACTION] << "GuiClipboard::getAsLyX(): `";
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// We don't convert encodings here since the encoding of the
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// clipboard contents is specified in the data itself
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QMimeData const * source =
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qApp->clipboard()->mimeData(QClipboard::Clipboard);
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if (!source) {
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lyxerr[Debug::ACTION] << "' (no QMimeData)" << endl;
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return string();
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}
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if (source->hasFormat(mime_type)) {
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// data from ourself or some other LyX instance
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QByteArray const ar = source->data(mime_type);
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string const s(ar.data(), ar.count());
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if (lyxerr.debugging(Debug::ACTION))
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lyxerr[Debug::ACTION] << s << "'" << endl;
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return s;
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}
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lyxerr[Debug::ACTION] << "'" << endl;
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return string();
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}
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docstring const GuiClipboard::getAsText() const
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{
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// text data from other applications
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QString const str = qApp->clipboard()->text(QClipboard::Clipboard);
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if (lyxerr.debugging(Debug::ACTION))
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lyxerr[Debug::ACTION] << "GuiClipboard::getAsText(): `"
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<< fromqstr(str) << "'" << endl;
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if (str.isNull())
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return docstring();
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return internalLineEnding(qstring_to_ucs4(str));
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}
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void GuiClipboard::put(string const & lyx, docstring const & text)
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{
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if (lyxerr.debugging(Debug::ACTION))
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lyxerr[Debug::ACTION] << "GuiClipboard::put(`" << lyx << "' `"
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<< to_utf8(text) << "')" << endl;
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// We don't convert the encoding of lyx since the encoding of the
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// clipboard contents is specified in the data itself
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QMimeData * data = new QMimeData;
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if (!lyx.empty()) {
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QByteArray const qlyx(lyx.c_str(), lyx.size());
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data->setData(mime_type, qlyx);
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}
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// Don't test for text.empty() since we want to be able to clear the
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// clipboard.
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QString const qtext = toqstr(text);
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data->setText(qtext);
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qApp->clipboard()->setMimeData(data, QClipboard::Clipboard);
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}
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bool GuiClipboard::hasLyXContents() const
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{
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QMimeData const * const source =
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qApp->clipboard()->mimeData(QClipboard::Clipboard);
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return source && source->hasFormat(mime_type);
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}
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bool GuiClipboard::isInternal() const
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{
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// ownsClipboard() is also true for stuff coming from dialogs, e.g.
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// the preamble dialog
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return qApp->clipboard()->ownsClipboard() && hasLyXContents();
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}
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bool GuiClipboard::empty() const
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{
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// We need to check both the plaintext and the LyX version of the
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// clipboard. The plaintext version is empty if the LyX version
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// contains only one inset, and the LyX version is empry if the
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// clipboard does not come from LyX.
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if (!qApp->clipboard()->text(QClipboard::Clipboard).isEmpty())
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return false;
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return !hasLyXContents();
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}
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} // namespace frontend
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} // namespace lyx
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