AppearanceSample-4/AppearanceHelpers.cp

/*
    File:       AppearanceHelpers.c
 
    Contains:   Helper routines which wrap around Set/GetControlData.
 
    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 "AppearanceHelpers.h"
 
// Noone likes a mess. Here's some macros to help out.
 
#define check_alignment( align )    \
    check( ((align) == kControlBevelButtonAlignCenter) || ((align) == kControlBevelButtonAlignTop)  \
            || ((align) == kControlBevelButtonAlignBottom) || ((align) == kControlBevelButtonAlignLeft) \
            || ((align) == kControlBevelButtonAlignRight) || ((align) == kControlBevelButtonAlignTopLeft) \
            || ((align) == kControlBevelButtonAlignTopRight) || ((align) == kControlBevelButtonAlignBottomLeft) \
            || ((align) == kControlBevelButtonAlignBottomRight) || ((align) == kControlBevelButtonAlignSysDirection) )
 
#define check_text_alignment( align )   \
    check( ((align) == kControlBevelButtonAlignTextSysDirection) || ((align) == kControlBevelButtonAlignTextCenter) \
            || ((align) == kControlBevelButtonAlignTextFlushRight) || ((align) == kControlBevelButtonAlignTextFlushLeft) )
 
#define check_text_placement( align )   \
    check( ((align) == kControlBevelButtonPlaceSysDirection) || ((align) == kControlBevelButtonPlaceToRightOfGraphic)   \
            || ((align) == kControlBevelButtonPlaceToLeftOfGraphic) || ((align) == kControlBevelButtonPlaceBelowGraphic) \
            || ((align) == kControlBevelButtonPlaceAboveGraphic) || ((align) == kControlBevelButtonPlaceNormally ) )
 
 
#define MIN( a, b )     ( ( (a) < (b) ) ? (a) : (b) )
 
//-----------------------------------------------------------------------------
//  ¥ CFStringFromStr255
//-----------------------------------------------------------------------------
//  Simple wrapper to ease conversion of Str255s to CFStrings.  Remember,
// you have to CFRelease() the CFStrings you create.
 
CFStringRef 
CFStringFromStr255(ConstStr255Param pascalString)
{
  return CFStringCreateWithPascalString( NULL, pascalString, GetApplicationTextEncoding( ) );
}
 
//-----------------------------------------------------------------------------
//  ¥ GetEditTextText
//-----------------------------------------------------------------------------
//  Returns the text from an edit text control.
//
OSStatus
GetEditTextText( ControlHandle control, StringPtr text )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( text == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlEditTextTextTag, 255, (Ptr)(text + 1), &actualSize );
    if ( err == noErr )
        text[0] = MIN( 255, actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ CopyEditTextCFString
//-----------------------------------------------------------------------------
//  Returns the text from an edit text control as a CFStringRef.
//
OSStatus
CopyEditTextCFString( ControlHandle control, CFStringRef* outString )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( outString == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlEditTextCFStringTag, sizeof( CFStringRef ), (Ptr)outString, &actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetEditTextText
//-----------------------------------------------------------------------------
//  Sets the text of an edit text control and optionally redraws it.
//
OSStatus
SetEditTextText( ControlHandle control, ConstStr255Param text, Boolean draw )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
 
    err = SetControlData( control, 0, kControlEditTextTextTag, text[0], (Ptr)(text+1) );
    if ( (err == noErr) && draw )
        DrawOneControl( control );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetEditTextText
//-----------------------------------------------------------------------------
//  Sets the text of an edit text control and optionally redraws it.
//
OSStatus
SetEditTextCFString( ControlHandle control, CFStringRef text, Boolean draw )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
 
    err = SetControlData( control, 0, kControlEditTextCFStringTag, sizeof( text ), (Ptr)&text );
    if ( (err == noErr) && draw )
        DrawOneControl( control );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetEditTextKeyFilter
//-----------------------------------------------------------------------------
//  Sets the text of an edit text control and optionally redraws it.
//
OSStatus
SetEditTextKeyFilter( ControlHandle control, ControlKeyFilterUPP filter )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( filter == nil )
        return paramErr;
 
    err = SetControlData( control, 0, kControlKeyFilterTag, sizeof( filter ),
            (Ptr)&filter );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetEditTextSelection
//-----------------------------------------------------------------------------
//  Sets the selection of an edit text control and redraws it.
//
OSStatus
SetEditTextSelection( ControlHandle control, SInt16 selStart, SInt16 selEnd )
{
    ControlEditTextSelectionRec selection;
    OSStatus    err;
 
    if ( control == nil )
        return paramErr;
        
    selection.selStart = selStart;
    selection.selEnd = selEnd;
    
    err = SetControlData( control, 0, kControlEditTextSelectionTag,
            sizeof( selection ), (Ptr)&selection );
    
    if ( err == noErr )
        DrawOneControl( control );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetEditTextSelection
//-----------------------------------------------------------------------------
//  Returns the selection for an edit text control.
//
OSStatus
GetEditTextSelection( ControlHandle control, SInt16* selStart, SInt16* selEnd )
{
    ControlEditTextSelectionRec selection;
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( selStart == nil )
        return paramErr;
        
    if ( selEnd == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlEditTextSelectionTag,
            sizeof( selection ), (Ptr)&selection, &actualSize );
         
    if ( err == noErr )
    {
        *selStart = selection.selStart;
        *selEnd = selection.selEnd;
    }
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetEditTextPasswordText
//-----------------------------------------------------------------------------
//  Returns the password text for an edit text password control.
//
OSStatus
GetEditTextPasswordText( ControlHandle control, StringPtr text )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( text == nil )
        return paramErr;
 
    err = GetControlData( control, 0, kControlEditTextPasswordTag,
            255, (Ptr)(text+1), &actualSize );
         
    if ( err == noErr )
        text[0] = MIN( 255, actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetStaticTextText
//-----------------------------------------------------------------------------
//  Returns the text from an edit text control.
//
OSStatus
GetStaticTextText( ControlHandle control, StringPtr text )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( text == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlStaticTextTextTag, 255, (Ptr)(text + 1), &actualSize );
    if ( err == noErr )
        text[0] = MIN( 255, actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ CopyStaticTextCFString
//-----------------------------------------------------------------------------
//  Returns the text from a static text control as a CFStringRef.
//
OSStatus
CopyStaticTextCFString( ControlHandle control, CFStringRef* outString )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( outString == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlStaticTextCFStringTag, sizeof(CFStringRef), (Ptr)outString, &actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetStaticTextText
//-----------------------------------------------------------------------------
//  Sets the text of an edit text control and optionally redraws it.
//
OSStatus
SetStaticTextText( ControlHandle control, ConstStr255Param text, Boolean draw )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
 
    err = SetControlData( control, 0, kControlStaticTextTextTag, text[0], (Ptr)(text+1) );
    if ( (err == noErr) && draw )
        DrawOneControl( control );
    
    return err;
}
 
OSStatus
SetStaticTextCFString( ControlRef control, CFStringRef text, Boolean draw )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
 
    if ( text == nil )
        return paramErr;
 
    err = SetControlData( control, 0, kControlStaticTextCFStringTag, sizeof( CFStringRef ),
            &text );
            
    if ( (err == noErr) && draw )
        DrawOneControl( control );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetStaticTextTextHeight
//-----------------------------------------------------------------------------
//  Returns the actual height of the text, not the control height.
//
OSStatus
GetStaticTextTextHeight( ControlHandle control, SInt16* height )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( height == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlStaticTextTextHeightTag, sizeof( SInt16 ),
         (Ptr)height, &actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetProgressIndicatorState
//-----------------------------------------------------------------------------
//  Sets a progress bar to the determinate or indeterminate state.
//
OSStatus
SetProgressIndicatorState( ControlHandle control, Boolean isDeterminate )
{
    OSStatus    err;
    Boolean     state;
    
    if ( control == nil )
        return paramErr;
 
    state = !isDeterminate; 
    err = SetControlData( control, 0, kControlProgressBarIndeterminateTag, sizeof( state ),
            (Ptr)&state );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetProgressIndicatorState
//-----------------------------------------------------------------------------
//  Gets progress bar determinate or indeterminate state.
//
OSStatus
GetProgressIndicatorState( ControlHandle control, Boolean* isDeterminate )
{
    Size        actualSize;
    OSStatus    err;
    Boolean     temp;
    
    if ( control == nil )
        return paramErr;
        
    if ( isDeterminate == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlProgressBarIndeterminateTag, sizeof( temp ),
             (Ptr)&temp, &actualSize );
    
    if ( err == noErr )
        *isDeterminate = !temp;
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetPushButtonDefaultState
//-----------------------------------------------------------------------------
//  Sets a push button's default flag. This lets the button know whether or not
//  to draw its default ring.
//
OSStatus
SetPushButtonDefaultState( ControlHandle control, Boolean isDefault )
{
    OSStatus    err = noErr;
    
    if ( control == nil )
        return paramErr;
 
    if (isDefault)
        err = SetWindowDefaultButton( GetControlOwner( control ), control );
    else
        err = SetWindowDefaultButton( GetControlOwner( control ), nil ); // nil means clear the default button
 
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetPushButtonDefaultState
//-----------------------------------------------------------------------------
//  Returns the state of the button's default status.
//
OSStatus
GetPushButtonDefaultState( ControlHandle control, Boolean* isDefault )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( isDefault == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlPushButtonDefaultTag, sizeof( Boolean ),
             (Ptr)isDefault, &actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetListBoxListHandle
//-----------------------------------------------------------------------------
//  Returns the list handle from a list box control.
//
OSStatus
GetListBoxListHandle( ControlHandle control, ListHandle* list )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( list == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlListBoxListHandleTag, sizeof( ListHandle ),
             (Ptr)list, &actualSize );
        
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetListBoxKeyFilter
//-----------------------------------------------------------------------------
//  Sets the key filter for a list box control.
//
OSStatus
SetListBoxKeyFilter( ControlHandle control, ControlKeyFilterUPP filter )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
    
    if ( filter == nil )
        return paramErr;
 
    err = SetControlData( control, 0, kControlKeyFilterTag, sizeof( filter ),
            (Ptr)&filter );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetIconControlTransform
//-----------------------------------------------------------------------------
//  Sets the transform for an icon control.
//
OSStatus
SetIconControlTransform( ControlHandle control, IconTransformType transform )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
    
    err = SetControlData( control, 0, kControlIconTransformTag, sizeof( transform ),
            (Ptr)&transform );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetIconControlAlignment
//-----------------------------------------------------------------------------
//  Sets the alignment for an icon control.
//
OSStatus
SetIconControlAlignment( ControlHandle control, IconAlignmentType align )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
    
    err = SetControlData( control, 0, kControlIconAlignmentTag, sizeof( align ),
            (Ptr)&align );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ SetClockDateTime
//-----------------------------------------------------------------------------
//  Sets the time for a clock control.
//
OSStatus
SetClockDateTime( ControlHandle control, const LongDateRec* time )
{
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
    
    err = SetControlData( control, 0, kControlClockLongDateTag,
            sizeof( LongDateRec ), (Ptr)time );
    
    return err;
}
 
//-----------------------------------------------------------------------------
//  ¥ GetClockDateTime
//-----------------------------------------------------------------------------
//  Returns the time from a clock control.
//
OSStatus
GetClockDateTime( ControlHandle control, LongDateRec* time )
{
    Size        actualSize;
    OSStatus    err;
    
    if ( control == nil )
        return paramErr;
        
    if ( time == nil )
        return paramErr;
        
    err = GetControlData( control, 0, kControlClockLongDateTag,
            sizeof( LongDateRec ), (Ptr)time, &actualSize );
        
    return err;
}
 
//=========================================================================================
//  ¥ GetPopupButtonMenuRef                                             PUBLIC
//=========================================================================================
//  Gets the menu attached to a popup.
//
OSStatus
GetPopupButtonMenuRef( ControlRef popupButton, MenuRef* outMenu )
{
    OSStatus    err;
    
    err = GetControlData( popupButton, 0, kControlPopupButtonMenuRefTag,
            sizeof( MenuRef ), outMenu, NULL );
    
    return err;
}
 
OSStatus
SyncPopupButtonToMenu( ControlRef popupButton )
{
    OSStatus    err;
    MenuRef     menu;
    
    err = GetPopupButtonMenuRef( popupButton, &menu );
    if ( err == noErr )
    {
        if ( CountMenuItems( menu ) >= 1 )
        {
            SetControlMaximum( popupButton, CountMenuItems( menu ) );
            SetControlMinimum( popupButton, 1 );
        }
        else
        {
            SetControlMinimum( popupButton, 0 );
            SetControlMaximum( popupButton, 0 );
        }
    }
 
    return err;
}


Copyright © 2005 Apple Computer, Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2005-06-27