/*
  windowstyles.c

  A basic example of the various window styles
  Cpw supports.
*/

/****************************************************/
/*  Basic Win32 Template                            */
/****************************************************/

#define CPWDLL_EXTERN
#include <cpw.h>

/* font faces */

static CpwFontFace font;

/* handy window characteristics holder */

static CpwWindowInfo windowInfo = { 0,100,100,400,200 }; /* id,posx,posy,w,h */

static char buf[10];

/****************************************************/
/*  OpenGL 2D Matrix Setup                          */
/****************************************************/

void set2DMatrix( void ) 
{
    glMatrixMode( GL_PROJECTION );
    glLoadIdentity();
    gluOrtho2D( 0, windowInfo.width, 0, windowInfo.height );
    glMatrixMode( GL_MODELVIEW );
    glLoadIdentity();
}

/****************************************************/
/*  OpenGL 3D Matrix Setup                          */
/****************************************************/

void set3DMatrix( void ) 
{
    glMatrixMode( GL_PROJECTION );
    glLoadIdentity();
    gluPerspective( 60, windowInfo.width / windowInfo.height, 1, 100 );
    glMatrixMode( GL_MODELVIEW );
    glLoadIdentity();
}

/****************************************************/
/*  Draw                                            */
/****************************************************/

void drawWindow( pCpw cpw, uint_32 windowid ) 
{
    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
    set2DMatrix();

    sprintf( buf, "%d", windowid );
    glRasterPos2d( windowInfo.width / 2, windowInfo.height / 2 );
    cpwDrawFont( cpw, font, buf, 1 );
}

/****************************************************/
/*  Window Create / Destroy                         */
/****************************************************/

/* the window's context is set current prior to this call,
   do any init we need per window */

void window( pCpw cpw, uint_32 winid, bool flag )
{

    /* creation event */

    if ( flag == true ) {

        glClearDepth(1.0f);
        glShadeModel(GL_SMOOTH);
        glEnable(GL_DEPTH_TEST);
        glDepthFunc(GL_LEQUAL);
        glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
        glEnable(GL_BLEND);
        glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

        glClearColor( ((float)winid / (float)6.0), 
                      ((float)winid / (float)6.0), 
                      ((float)winid / (float)6.0), (float)1.0 );

        glColor3f( (float)0.2, (float)0.2, (float)1.0 );

    }

    /* window close event */

    if ( flag == false ) {
        cpwDestroyWindow( cpw, winid );
        return;
    }
}

/****************************************************/
/*  Window Draw                                     */
/****************************************************/

void draw( pCpw cpw, uint_32 winid )
{
    drawWindow( cpw, winid );
    cpwSwapWindowBuffers( cpw, winid );
}

/****************************************************/
/*  Window Resize                                   */
/****************************************************/

void reshape( pCpw cpw, uint_32 winid, uint_32 width, uint_32 height )
{
    if ( height == 0 ) { height = 1; }
    if ( width == 0 )  { width = 1; }

    windowInfo.width = width;
    windowInfo.height = height;

    set2DMatrix();

    glViewport( 0, 0, width, height );
}

/****************************************************/
/*  main                                            */
/****************************************************/

int main(int argc, char* argv[])
{
    pCpw cpw;

    cpw = null;

    /****************************************************/
    /*  Init                                            */
    /****************************************************/

    cpwInitContext( &cpw ); /* create the context and init it */

    //cpwInitWindowProperty( cpw, CPW_WINDOWPROP_EXPECTMENU, 0, 0 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_SIZE, 100, 100 );
    //cpwInitWindowProperty( cpw, CPW_WINDOWPROP_DESKTOP, 0, 0 );

    /****************************************************/
    /*  Creaing Windows                                 */
    /****************************************************/

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_STANDARD, 0, 0 );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POSITION, 120, 200 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_THICKBORDER, 0, 0 );
    cpwCreateWindow( cpw, "Cpw 1" );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POSITION, 240, 250 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_THINBORDER, 0, 0 );
    cpwCreateWindow( cpw, "Cpw 2" );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_NODRESSING, 0, 0 );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POSITION, 360, 300 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_THICKBORDER, 0, 0 );
    cpwCreateWindow( cpw, "Cpw 3" );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POPUP, 0, 0 );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POSITION, 240, 150 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_THICKBORDER, 0, 0 );
    cpwCreateWindow( cpw, "Cpw 4" );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POSITION, 360, 200 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_THINBORDER, 0, 0 );
    cpwCreateWindow( cpw, "Cpw 5" );

    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_POSITION, 480, 250 );
    cpwInitWindowProperty( cpw, CPW_WINDOWPROP_NOBORDER, 0, 0 );
    cpwCreateWindow( cpw, "Cpw 6" );

    /****************************************************/
    /*  Event Callbacks                                 */
    /****************************************************/

    cpwCreateCallback( cpw, window );
    cpwDisplayCallback( cpw, draw );
    cpwReshapeCallback( cpw, reshape );

    /****************************************************/
    /*  Fonts                                           */
    /****************************************************/

    cpwFontMode( cpw, CPW_FONTOPT_PIXELMAP, 0 );
    cpwFontMode( cpw, CPW_FONTOPT_ALIGNLEFT, 0 );
    cpwFontMode( cpw, CPW_FONTOPT_SIZE, 30 );

    cpwFontMode( cpw, CPW_FONTOPT_PIXELMAP_GLFORMAT, GL_RGBA );

    font = cpwLoadFont( cpw, "times.ttf", CPW_FONTLOC_HOST, "", "" );

    if ( font == 0 )
        printf("Could not load TrueType font file Time Roman.\n");

    /****************************************************/
    /*  MainLoop                                        */
    /****************************************************/

    cpwMainLoop( cpw );

    /****************************************************/
    /*  Exit and Free                                   */
    /****************************************************/

    cpwFreeContext( &cpw );

    return 0;
}