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f3ed8071d8
Implements CacheMimeData type so that we only need to query the clipboard once on startup and once each time the contents of the clipboard change. This is important as Qt takes 5 seconds to time-out when the clipboard is non-responsive. Patch by John McCabe-Dansted. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@35790 a592a061-630c-0410-9148-cb99ea01b6c8
104 lines
2.4 KiB
C++
104 lines
2.4 KiB
C++
// -*- C++ -*-
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/**
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* \file GuiClipboard.h
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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 unknown
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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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#ifndef GUICLIPBOARD_H
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#define GUICLIPBOARD_H
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#include "frontends/Clipboard.h"
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#include <QMimeData>
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#include <QObject>
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#include <QStringList>
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namespace lyx {
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namespace frontend {
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class QMacPasteboardMimeGraphics;
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/**
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* \class CacheMimeData
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*
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* This class is used in order to query the clipboard only once on
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* startup and once each time the contents of the clipboard changes.
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*/
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class CacheMimeData : public QMimeData
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{
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Q_OBJECT
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public:
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// LyX calls "on_dataChanged" on startup, so it is not necessary to
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// query the clipboard here.
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CacheMimeData()
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{}
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/// reads the clipboard and updates the cached_formats_
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void update();
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/// returns the cached list of formats supported by the object
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virtual QStringList formats() const { return cached_formats_; }
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/// reads the clipboard and returns the data
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QByteArray data(QString const & mimeType) const;
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private:
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/// the cached list of formats supported by the object
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QStringList cached_formats_;
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};
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/**
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* The Qt4 version of the Clipboard.
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*/
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class GuiClipboard: public QObject, public Clipboard
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{
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Q_OBJECT
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public:
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GuiClipboard();
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/** Clipboard overloaded methods
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*/
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//@{
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std::string const getAsLyX() const;
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FileName getAsGraphics(Cursor const & cur, GraphicsType type) const;
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docstring const getAsText() const;
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void put(std::string const & lyx, docstring const & text);
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bool hasLyXContents() const;
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bool hasGraphicsContents(GraphicsType type = AnyGraphicsType) const;
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bool hasTextContents() const;
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bool isInternal() const;
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bool hasInternal() const;
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bool empty() const;
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//@}
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FileName getPastedGraphicsFileName(Cursor const & cur,
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Clipboard::GraphicsType & type) const;
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private Q_SLOTS:
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void on_dataChanged();
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private:
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bool text_clipboard_empty_;
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bool has_lyx_contents_;
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bool has_graphics_contents_;
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/// the cached mime data used to describe the information
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/// that can be stored in the clipboard
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CacheMimeData cache_;
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};
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QString const lyxMimeType();
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QString const pdfMimeType();
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QString const emfMimeType();
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QString const wmfMimeType();
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} // namespace frontend
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} // namespace lyx
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#endif // GUICLIPBOARD_H
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