PShaderTxt.h

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//------------------------------------------------------------------------
//
//   Joe Kniss
//     7-15-03
//                   ________    ____   ___ 
//                  |        \  /    | /  /
//                  +---+     \/     |/  /
//                  +--+|  |\    /|     < 
//                  |  ||  | \  / |  |\  \ 
//                  |      |  \/  |  | \  \ 
//                   \_____|      |__|  \__\
//                       Copyright  2003 
//                      Joe Michael Kniss
//                   <<< jmk@cs.utah.edu >>>
//               "All Your Base are Belong to Us"
//-------------------------------------------------------------------------


// PShaderTxt.h
///  editable text for a shader
/// must be created in conjunction with a "gl" window, needs context
/// to load programs

#ifndef __PROGRAMMABLE_SHADER_TXT_DOT_H
#define __PROGRAMMABLE_SHADER_TXT_DOT_H

#include "../errs/ErrTxtWin.h"
#include <qfiledialog.h> 
#include <qwidget.h>
#include <stateGlift.h>
#include <qmultilineedit.h>
#include <qgl.h>
#include <string>

class PShaderTxt : public QWidget {
   Q_OBJECT
public:
   PShaderTxt(const QGLContext *ctx, QWidget *parent, const char *name=0, WFlags wf=0);
   PShaderTxt(const QGLContext *ctx, glift::ProgShaderSP s, QWidget *parent, const char *name=0, WFlags wf=0);
   virtual ~PShaderTxt();

   enum SUPPORTED_SHADERS {
      NOT_LOADED,
      UNKNOWN,
      ARB_FP,
      ARB_VP,
      SHADER_LAST
   };
   int getShaderType() const { return _stype; }

   QString getFileName();

signals:
   void initAFP(glift::FragProgARBSP fp);
   void initAVP(glift::VertexProgARBSP vp);

public slots:
   void loadShader();
   void loadShader(glift::ProgShaderSP shader);
   void loadShaderFromFile(const QString &fname);
   void loadShaderFromText(const QString &text);
   void saveShader(const QString &lastPath);
   void saveShaderAs(const QString &lastPath);
   void closeShader(const QString &lastPath);

protected:

    void conf();
    /// false for success, true for failure
    bool castShader();
    /// highlight the error text
    int getErrorPos(std::string s);
   

    QMultiLineEdit *_mle;

    /// this should always exist
    glift::ProgShaderSP    _shader;
    /// these depend on the shader loaded
    glift::FragProgARBSP   _fpshader;
    glift::VertexProgARBSP _vpshader;

    const QGLContext *_ctx;
    
    ErrTxtWin  *_errw;

    int _stype;
};


#endif

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