AppearanceSample-4/MegaDialog.cp

/*
    File:       MegaDialog.cp
 
    Contains:   Code to drive our MegaDialog example.
 
    Version:    Mac OS X
 
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    Copyright © 1997-2001 Apple Computer, Inc., All Rights Reserved
*/
 
#include "AppearanceSamplePrefix.h"
 
#if !BUILDING_FOR_CARBON_8
    #include <Carbon/Carbon.h>
#else
    #include <Carbon.h>
#endif
 
#include "MegaDialog.h"
#include "ProgressPane.h"
#include "SliderPane.h"
#include "ClassicPane.h"
#include "TextPane.h"
#include "LayoutPane.h"
#include "NewButtonPane.h"
 
enum
{
    kNoPane         = 0,
    kClassicPane    = 1,
    kSliderPane     = 2,
    kProgressPane   = 3,
    kTextPane       = 4,
    kLayoutPane     = 5,
    kNewPane        = 6
};
 
MegaDialog::MegaDialog() : BaseDialog( 6000 )
{
    ControlHandle       control;
 
    ::GetDialogItemAsControl( fDialog, 1, &control );
#if HELP_TAGS_ENABLED   
    // Set help for the tab control
    fHelpContentProviderUPP = NewHMControlContentUPP( HelpContentProvider );
    
    ::HMInstallControlContentCallback( control, fHelpContentProviderUPP );
    
    // Set help for the dialog itself
    {
        HMHelpContentRec    windowHelpContent;
        
        windowHelpContent.version = kMacHelpVersion;
        // If the window help content is always supposed to appear in the exact
        // same location, set the absolute rectangle here, otherwise, it should
        // be EmptyRect.
        // ::GetWindowBounds( GetDialogWindow( fDialog ), kWindowContentRgn, &windowHelpContent.absHotRect );
        ::SetRect( &(windowHelpContent.absHotRect), 0, 0, 0, 0 );
        windowHelpContent.tagSide = kHMDefaultSide;
 
        // Our minimum content is on a STR resource
        windowHelpContent.content[ kHMMinimumContentIndex ].contentType = kHMStrResContent;
        windowHelpContent.content[ kHMMinimumContentIndex ].u.tagStrRes = 6000;
 
        // No maximum content
        windowHelpContent.content[ kHMMaximumContentIndex ].contentType = kHMStrResContent;
        windowHelpContent.content[ kHMMaximumContentIndex ].u.tagStrRes = 6001;
        
        ::HMSetWindowHelpContent( GetDialogWindow( fDialog ), &windowHelpContent );
    }
#endif  
 
    // turn off the Disabled tab
    SetTabEnabled( control, 7, false );
    
    // enable async dragging
    ChangeWindowAttributes( GetDialogWindow( fDialog ), kWindowAsyncDragAttribute, 0 );
    
    fPane = nil;
    SwitchPane( kClassicPane );
}
 
MegaDialog::~MegaDialog()
{
    delete fPane;
}
 
void
MegaDialog::SwitchPane( SInt16 paneIndex )
{
    ControlHandle       control;
 
    if ( paneIndex == 0 ) return;
 
    delete fPane;
    fPane = nil;    
        
    GetDialogItemAsControl( fDialog, 1, &control );
    SetControlValue( control, paneIndex );
 
    switch ( paneIndex )
    {
        case kProgressPane:
            fPane = new ProgressPane( fDialog, CountDITL( fDialog ) );
            break;
 
        case kSliderPane:
            fPane = new SliderPane( fDialog, CountDITL( fDialog ) );
            break;
 
        case kClassicPane:
            fPane = new ClassicPane( fDialog, CountDITL( fDialog ) );
            break;
 
        case kTextPane:
            fPane = new TextPane( fDialog, CountDITL( fDialog ) );
            break;
        
        case kLayoutPane:
            fPane = new LayoutPane( fDialog, CountDITL( fDialog ) );
            break;
        
        case kNewPane:
            fPane = new NewButtonPane( fDialog, CountDITL( fDialog ) );
            break;
    }
    
    InitItems( 2, -1 );
    DrawDialog( fDialog );
}
 
void
MegaDialog::HandleItemHit( SInt16 item )
{
    if ( item == 1 )
    {
        ControlHandle       control;
        
        GetDialogItemAsControl( fDialog, 1, &control );
        SwitchPane( GetControlValue( control ) );
    }
    else if ( fPane )
    {
        fPane->ItemHit( item );
    }
}
 
pascal OSStatus
MegaDialog::HelpContentProvider(ControlRef inControl, Point inGlobalMouse, HMContentRequest inRequest, HMContentProvidedType *outContentProvided, HMHelpContentPtr ioHelpContent)
{
    ControlGetRegionRec getRegionRec;
    Point               localMouse;
    GrafPtr             currPort;
    
    // Only care if asked to supplu content, we don't have anything special to dispose of
    if ( inRequest != kHMSupplyContent )
        return noErr;
        
    // Get a region for the tabs
    getRegionRec.region = ::NewRgn();
    if ( getRegionRec.region == NULL )
        return ::MemError();
    
    // Convert the global mouse to dialog relative
    ::GetPort( &currPort );
    ::SetPortWindowPort( GetControlOwner( inControl ) );
    
    localMouse = inGlobalMouse;
    ::GlobalToLocal( &localMouse );
    
    // Assume we have no content
    *outContentProvided = kHMContentNotProvided;
 
    // See if we are in any tab
    for ( SInt16 tabIndex = GetControlMinimum( inControl ); tabIndex <= GetControlMaximum( inControl ); tabIndex++ )
    {
        getRegionRec.part = tabIndex;
        
        if ( ( SendControlMessage( inControl, kControlMsgGetRegion, (void *) &getRegionRec ) == noErr ) &&
             PtInRgn( localMouse, getRegionRec.region ) )
        {
            // We found the tab, supply the content
            
            // First set the *global* hot rect
            ::GetRegionBounds( getRegionRec.region, &(ioHelpContent->absHotRect) );
            ::LocalToGlobal( &rectTopLeft(ioHelpContent->absHotRect) );
            ::LocalToGlobal( &rectBotRight(ioHelpContent->absHotRect) );
            
            ioHelpContent->tagSide = kHMDefaultSide;
            
            // Our minimum content is on a STR# resource
            ioHelpContent->content[ kHMMinimumContentIndex ].contentType = kHMStringResContent;
            ioHelpContent->content[ kHMMinimumContentIndex ].u.tagStringRes.hmmResID = 6000;
            ioHelpContent->content[ kHMMinimumContentIndex ].u.tagStringRes.hmmIndex = tabIndex;
            
            // No maximum content
            ioHelpContent->content[ kHMMaximumContentIndex ].contentType = kHMStringResContent;
            ioHelpContent->content[ kHMMaximumContentIndex ].u.tagStringRes.hmmResID = 6001;
            ioHelpContent->content[ kHMMaximumContentIndex ].u.tagStringRes.hmmIndex = tabIndex;
            
            *outContentProvided = kHMContentProvided;
            break;
        }
    }
    
    // If in the content of the tab control then don't propagate to the window
    if ( *outContentProvided == kHMContentNotProvided )
    {
        getRegionRec.part = kControlContentMetaPart;
 
        if ( ( SendControlMessage( inControl, kControlMsgGetRegion, (void *) &getRegionRec ) == noErr ) &&
             PtInRgn( localMouse, getRegionRec.region ) )
        {
            *outContentProvided = kHMContentNotProvidedDontPropagate;
        }
    }
 
    
    ::DisposeRgn( getRegionRec.region );
    ::MacSetPort( currPort );
    
    return noErr;
}