CAUGuiSelector.cpp

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/*
 *  CAUGuiSelector.cpp
 *  CAUGuiDemo
 *
 *  Created by Urs Heckmann on Fri Dec 13 2002.
 *  Copyright (c) 2002 __MyCompanyName__. All rights reserved.
 *
 */

#include "CAUGuiSelector.h"

#include "CAUGuiMoreImages.h"

CAUGuiSelector::CAUGuiSelector (    CAUGuiMan*          theChief,
                            
                            eRect*              theWhere,
                            UInt32              theRange, 
                            UInt32              theOrientation,
                            CAUGuiGraphic*      theForeGround, 
                            CAUGuiGraphic*      theBackground)
                        
                        :   CAUGuiCtrl ( theChief, theWhere, theRange )
                            
{
        
    ForeGround = theForeGround;
    BackGround = theBackground;
    
    orientation = theOrientation;
    
    userProcedure = NULL;
    userData = NULL;
    
    if ( theWhere->w == 0 )
    {
        if ( BackGround != NULL )
        {
            theWhere->w = BackGround->getWidth();
            setBounds(theWhere); 
        }
    
    }
    
    if ( theWhere->h == 0 )
    {
        if ( BackGround != NULL )
        {
            theWhere->h = BackGround->getHeight();
            setBounds(theWhere);
        }
    
    }
        
    setType( kCAUGui_Selector );
    
    setTolerance ( 0 );
    
}

CAUGuiSelector::~CAUGuiSelector ()
{

    ForeGround = NULL;
    BackGround = NULL;


}

void CAUGuiSelector::draw(CGContextRef context, UInt32 portHeight )
{
    ControlRef carbonControl = getCarbonControl();
    
    UInt32 max = GetControl32BitMaximum(carbonControl);
    UInt32 val = GetControl32BitValue( carbonControl );
    
    CGImageRef theBack = NULL;
    
    CGRect bounds;
    
    getBounds()->to( &bounds, portHeight );
    
    if ( BackGround != NULL )
        theBack = BackGround->getImage();
    
                
    if ( theBack != NULL )
        CGContextDrawImage( context, bounds, theBack );
    
    if ( ForeGround != NULL )
    {
        float valNorm = (float) val / (float)( max - 1 );
        
        if ( valNorm >= 1.f ) valNorm = 1.f;
            
        ForeGround->draw ( context, portHeight, getForeBounds(), valNorm );
    }
}



void CAUGuiSelector::mouseDown(Point *P, bool with_option, bool with_shift)
{

    ControlRef carbonControl = getCarbonControl();

    SInt32 max = (SInt32) GetControl32BitMaximum(carbonControl);

    SInt32 val = -1;

    eRect fore;
    fore.set( getForeBounds() );
    
    eRect back;
    back.set( getBounds() );
    
    SInt32 o_X = fore.x - back.x;
    SInt32 o_Y = fore.y - back.y;


    float s = 0.f;

    val = (SInt32) GetControl32BitValue( carbonControl );

    if ( orientation != 0 ) // horizontal mode
    {
        s = (float)(P->h - o_X) / (float)fore.w;
        val = (SInt32)( s * (float) max );
    }
    else    // vertical mode
    {
        s = (float)(P->v - o_Y) / (float)fore.h;
        val = (SInt32)( s * (float) max );
    }

    
    if ( val > max ) val = max;
    if ( val < 0 ) val = 0;
    SetControl32BitValue ( carbonControl, (UInt32) val );

    //printf ( "selector says: val %d, s %f, max %f\n", (int)val, s, (float) max );
    
    if ( userProcedure != NULL )
    {
        userProcedure ( val, this, userData );
    
    }


}

void CAUGuiSelector::mouseTrack(Point *P, bool with_option, bool with_shift)
{

        
}

void CAUGuiSelector::mouseUp(Point *P, bool with_option, bool with_shift)
{

}


void CAUGuiSelector::setUserProcedure ( selectorUserProcedure theProc, void* theUserData )
{
    userProcedure = theProc;
    userData = theUserData;
}

(c) 2002 - 2003 by Urs Heckmann www.u-he.com