103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
/*******************************************************************************
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* disp.h
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*
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* Written by Christoph Hormann <chris_hormann@gmx.de>
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*
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* Abstract base class for Unix systems render preview displays
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* Based on Windows pvdisplay.h.
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*
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* ---------------------------------------------------------------------------
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* Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
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* Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
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*
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* POV-Ray is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* POV-Ray is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ---------------------------------------------------------------------------
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* POV-Ray is based on the popular DKB raytracer version 2.12.
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* DKBTrace was originally written by David K. Buck.
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* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
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* ---------------------------------------------------------------------------
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* $File: //depot/public/povray/3.x/unix/disp.h $
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* $Revision: #1 $
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* $Change: 6069 $
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* $DateTime: 2013/11/06 11:59:40 $
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* $Author: chrisc $
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*******************************************************************************/
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#ifndef _DISP_H
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#define _DISP_H
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#include "vfe.h"
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#include <boost/shared_ptr.hpp>
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namespace pov_frontend
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{
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using namespace std;
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using namespace vfe;
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extern boost::shared_ptr<Display> gDisplay;
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class UnixDisplay : public vfeDisplay
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{
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public:
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UnixDisplay(unsigned int w, unsigned int h, GammaCurvePtr gamma, vfeSession *session, bool visible) :
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vfeDisplay(w, h, gamma, session, visible) {};
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virtual ~UnixDisplay() {} ;
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virtual void Initialise() = 0;
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virtual void Close() = 0;
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virtual void Show() = 0;
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virtual void Hide() = 0;
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virtual bool TakeOver(UnixDisplay *display) = 0;
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/**
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To read all pending events in an interfactive display system
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and interpret them.
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@returns true if an abort request has been made, false otherwise
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*/
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virtual bool HandleEvents() = 0;
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/**
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Called regularly by the main event loop.
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@param Force Indicates the Update should be immediate
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otherwise the display does not actually have to be updated
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during every call.
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*/
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virtual void UpdateScreen(bool Force = false) = 0;
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/**
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The following methods are sequentially called when pausing after
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a frame has been rendered, e.g. waiting for a keypress to continue.
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The first can be used to print a message that the display will wait
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for user input. The second must poll (with no wait) for user input
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and returns whether the pause is to be resumed; the method is called
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within a loop by the main thread. The last method allows to notify
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that the pause is finished.
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*/
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virtual void PauseWhenDoneNotifyStart() = 0;
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virtual bool PauseWhenDoneResumeIsRequested() = 0;
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virtual void PauseWhenDoneNotifyEnd() = 0;
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};
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inline UnixDisplay *GetRenderWindow (void)
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{
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Display *p = gDisplay.get();
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if (p == NULL)
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return NULL;
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return dynamic_cast<UnixDisplay *>(p) ;
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}
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}
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#endif
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