CAUGuiButton.cpp

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/*
 *  CAUGuiButton.cpp
 *  CoreGraphics AudioUnit GUI framework
 *
 *  Created by Urs Heckmann on Sun Oct 27 2002.
 *  Copyright (c) 2002 __MyCompanyName__. All rights reserved.
 *
 */

#include "CAUGuiButton.h"

CAUGuiButton::CAUGuiButton (    CAUGuiMan*          theChief,
                                CAAUParameter       &theAuvp, 
                                eRect*              theWhere,
                                CAUGuiGraphic*      theForeGround, 
                                CAUGuiGraphic*      theBackground,
                                CAUGuiBottonMode    theMode)
                        
                            :   CAUGuiCtrl ( theChief, theAuvp, theWhere, kCAUGui_res_1 )
                            
{
        
    ForeGround = theForeGround;
    BackGround = theBackground;
    mode = theMode;
    
    userProcedure = NULL;
    userData = NULL;
    
    onValue = 0;
    hilite = false;
    alpha = 0.7f;
    //printf ("ctor CAUGuiButton\n");

}

CAUGuiButton::CAUGuiButton (    CAUGuiMan*          theChief,
                                UInt32              theRange, 
                                eRect*              theWhere,
                                CAUGuiGraphic*      theForeGround, 
                                CAUGuiGraphic*      theBackground,
                                CAUGuiBottonMode    theMode)
                        
                            :   CAUGuiCtrl ( theChief, theWhere, theRange )
                            
{
        
    ForeGround = theForeGround;
    BackGround = theBackground;
    mode = theMode;
    
    userProcedure = NULL;
    userData = NULL;
    
    onValue = 0;
    hilite = false;
    alpha = 0.7f;
    //printf ("ctor CAUGuiButton\n");

}


CAUGuiButton::~CAUGuiButton ()
{

    ForeGround = NULL;
    BackGround = NULL;


    //printf ("dtor CAUGuiButton\n");


}

void CAUGuiButton::draw(CGContextRef context, UInt32 portHeight )
{
        
    CGImageRef theBack = NULL;
    CGImageRef theButton = NULL;
    CGRect bounds;
    
    getBounds()->to( &bounds, portHeight );
    
    if ( BackGround != NULL )
        theBack = BackGround->getImage();
        
    if ( ForeGround != NULL )
        theButton = ForeGround->getImage();
    
    if ( theBack != NULL )
        CGContextDrawImage( context, bounds, theBack );
    
    if ( theButton != NULL )
    {
        switch ( mode )
        {
        
            case kPushButton:
            case kRadioButton:
            
                        if ( GetControl32BitValue( getCarbonControl() ) == (SInt32) onValue )
                            ForeGround->draw( context, portHeight, getBounds(), 1.f );
                        else
                            ForeGround->draw( context, portHeight, getBounds(), 0.f );
                        break;
                        
            case kOnOffButton:
                        if ( GetControl32BitValue( getCarbonControl() ) == 0 )
                            ForeGround->draw( context, portHeight, getBounds(), 0.f );
                        else
                            ForeGround->draw( context, portHeight, getBounds(), 1.f );
                        break;
                
        
            default:
    
                        if ( hilite )
                            CGContextDrawImage( context, bounds, theButton );
                        else
                        {
                            if ( alpha != 0.0f )
                            {
                                CGContextSetAlpha( context, alpha);
                                CGContextDrawImage( context, bounds, theButton );
                            }
                        }
                        break;
        }
    }

}


void CAUGuiButton::mouseDown(Point *P, bool with_option, bool with_shift)
{
    ControlRef carbonControl = getCarbonControl();
    
    UInt32 value = GetControl32BitValue( carbonControl );
    UInt32 max = GetControl32BitMaximum( carbonControl );
    
    hilite = true;
    
    switch ( mode )
    {
        case kPushButton:
            SetControl32BitValue ( carbonControl, max );
            break;
    
        case kIncButton:
            if ( value == max ) value = 0;
            else value++;
            SetControl32BitValue ( carbonControl, value );
            break;
            
        case kDecButton:
            if ( value == 0 ) value = max;
            else value--;
            SetControl32BitValue ( carbonControl, value );
            break;
        
        case kRadioButton:
            SetControl32BitValue ( carbonControl, onValue );
            value = onValue;
            break;
        
        case kOnOffButton:
            if ( value != 0 )
                value = 0;
            else
                value = max;
            
            SetControl32BitValue ( carbonControl, value );
            break;
            
    
    }
    
    if ( userProcedure != NULL )
    {
        userProcedure ( value, this, userData );
    
    }
    
}

void CAUGuiButton::mouseTrack(Point *P, bool with_option, bool with_shift)
{
    ;
}

void CAUGuiButton::mouseUp(Point *P, bool with_option, bool with_shift)
{
    ControlRef carbonControl = getCarbonControl();
    
    hilite = false;
    
    switch ( mode )
    {
        case kPushButton:
            SetControl32BitValue ( carbonControl, 0 );
            break;
    
        case kIncButton:
            Draw1Control ( carbonControl );
            break;
            
        case kDecButton:
            Draw1Control ( carbonControl );
            break;
        
        case kRadioButton:
            SetControl32BitValue ( carbonControl, onValue );
            break;
        
        default:
            Draw1Control ( carbonControl );
            break;
    }
}

void CAUGuiButton::setUserProcedure ( buttonUserProcedure theProc, void* theUserData )
{
    userProcedure = theProc;
    userData = theUserData;
}

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