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ce708d095c
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5463 a592a061-630c-0410-9148-cb99ea01b6c8
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
// -*- C++ -*-
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/**
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* \file WorkArea.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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*
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* Full author contact details are available in file CREDITS
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*/
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#ifndef WORKAREA_H
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#define WORKAREA_H
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#include "frontends/key_state.h"
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#include "frontends/LyXKeySym.h"
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#include "funcrequest.h"
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#include <boost/signals/signal0.hpp>
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#include <boost/signals/signal1.hpp>
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#include <boost/signals/signal2.hpp>
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#include <boost/signals/signal3.hpp>
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#include <utility>
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class Painter;
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/**
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* The work area class represents the widget that provides the
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* view onto a document. It is owned by the BufferView, and
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* is responsible for handing events back to its owning BufferView.
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* It works in concert with the LyXScreen class to update the
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* widget view of a document.
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*/
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class WorkArea {
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public:
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WorkArea() {}
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virtual ~WorkArea() {}
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/// return the painter object for this work area
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virtual Painter & getPainter() = 0;
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/// return the width of the work area in pixels
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virtual int workWidth() const = 0;
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/// return the height of the work area in pixels
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virtual int workHeight() const = 0;
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/**
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* Update the scrollbar.
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* @param height the total document height in pixels
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* @param pos the current position in the document, in pixels
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* @param line_height the line-scroll amount, in pixels
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*/
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virtual void setScrollbarParams(int height, int pos, int line_height) = 0;
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// FIXME: this is an odd place to have it, but xforms needs it here ...
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/// a selection exists
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virtual void haveSelection(bool) const = 0;
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/// get the X clipboard contents
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virtual string const getClipboard() const = 0;
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/// fill the clipboard
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virtual void putClipboard(string const &) const = 0;
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/// work area dimensions have changed
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boost::signal0<void> workAreaResize;
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/// the scrollbar has changed
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boost::signal1<void, int> scrollDocView;
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/// a key combination has been pressed
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boost::signal2<void, LyXKeySymPtr, key_modifier::state> workAreaKeyPress;
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/// some mouse event
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boost::signal1<void, FuncRequest> dispatch;
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/// emitted when an X client has requested our selection
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boost::signal0<void> selectionRequested;
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/// emitted when another X client has stolen our selection
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boost::signal0<void> selectionLost;
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};
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#endif // WORKAREA_H
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