/* bzflag
 * Copyright (c) 1993-2018 Tim Riker
 *
 * This package is free software;  you can redistribute it and/or
 * modify it under the terms of the license found in the file
 * named COPYING that should have accompanied this file.
 *
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/* XVisual:
 *  Builders for X visuals suitable for OpenGL contexts and windows.
 */

#ifndef BZF_XVISUAL_H
#define BZF_XVISUAL_H

#include "BzfVisual.h"
#include "XDisplay.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>

class XVisual : public BzfVisual
{
public:
    XVisual(const XDisplay*);
    ~XVisual();

    void        setLevel(int level);
    void        setDoubleBuffer(bool);
    void        setIndex(int minDepth);
    void        setRGBA(int minRed, int minGreen,
                        int minBlue, int minAlpha);
    void        setDepth(int minDepth);
    void        setStencil(int minDepth);
    void        setAccum(int minRed, int minGreen,
                         int minBlue, int minAlpha);
    void        setStereo(bool);
    void        setMultisample(int minSamples);

    bool        build();

    // for other X stuff
    XVisualInfo*    get();

protected:
    int         findAttribute(int attribute) const;
    void        appendAttribute(int attribute, int value);
    void        removeAttribute(int index);
    void        editAttribute(int index, int value);

    bool        matchRequirements(XVisualInfo*) const;
    static bool     visualClassIsBetter(int thisBetter, int thanThis);

private:
    XDisplay::Rep*  display;
    bool        multisampleExt;
    int         attributes[65];
    int         attributeCount;
    XVisualInfo*    visual;
};

#endif // BZF_XVISUAL_H

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