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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>ImageBrowserView - /HIFramework/TView.cp</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Carbon/index.html">Carbon</a> > <a href="../../samplecode/Carbon/idxHumanInterfaceToolbox-date.html">Human Interface Toolbox</a> > <A HREF="javascript:location.replace('index.html');">ImageBrowserView</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">ImageBrowserView</div></h1></td>
</tr>
</table>
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<table width="680" border="0" cellpadding="0" cellspacing="0">
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<td id="scdetails">
<h2>/HIFramework/TView.cp</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/HIFramework/HIFramework.h</option>
<option value="listing2.html">/HIFramework/TCarbonEvent.cp</option>
<option value="listing3.html">/HIFramework/TCarbonEvent.h</option>
<option value="listing4.html">/HIFramework/TEventHandler.cp</option>
<option value="listing5.html">/HIFramework/TEventHandler.h</option>
<option value="listing6.html">/HIFramework/TObject.cp</option>
<option value="listing7.html">/HIFramework/TObject.h</option>
<option value="listing8.html">/HIFramework/TRect.cp</option>
<option value="listing9.html">/HIFramework/TRect.h</option>
<option value="listing10.html">/HIFramework/TView.cp</option>
<option value="listing11.html">/HIFramework/TView.h</option>
<option value="listing12.html">/ImageBrowser/ImageBrowserView.c</option>
<option value="listing13.html">/ImageBrowser/ImageBrowserView.h</option>
<option value="listing14.html">/ImageBrowser/main.c</option>
<option value="listing15.html">/ImageBrowser/TImageBrowserView.cp</option>
<option value="listing16.html">/ImageBrowser/TImageBrowserView.h</option></select>
</p>
</form>
<p><strong><a href="ImageBrowserView.zip">Download Sample</a></strong> (“ImageBrowserView.zip”, 104.7K)<BR>
<strong><a href="ImageBrowserView.dmg">Download Sample</a></strong> (“ImageBrowserView.dmg”, 155.9K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
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<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
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<!--googleon: index -->
<pre class="sourcecodebox">/*
File: TView.cp
Version: 1.1
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under Apple's
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Copyright © 2000-2005 Apple Computer, Inc., All Rights Reserved
*/
/*
NOTE: This is NOWHERE near a completely exhaustive implementation of a view. There are
many more carbon events one could intercept and hook into this.
*/
#include "TView.h"
//-----------------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------------
//
const EventTypeSpec kHIViewEvents[] =
{ { kEventClassCommand, kEventCommandProcess },
{ kEventClassCommand, kEventCommandUpdateStatus },
{ kEventClassControl, kEventControlInitialize },
{ kEventClassControl, kEventControlDraw },
{ kEventClassControl, kEventControlHitTest },
{ kEventClassControl, kEventControlGetPartRegion },
{ kEventClassControl, kEventControlGetData },
{ kEventClassControl, kEventControlSetData },
{ kEventClassControl, kEventControlGetOptimalBounds },
{ kEventClassControl, kEventControlBoundsChanged },
{ kEventClassControl, kEventControlTrack },
{ kEventClassControl, kEventControlGetSizeConstraints },
{ kEventClassControl, kEventControlHit },
{ kEventClassControl, kEventControlHiliteChanged },
{ kEventClassControl, kEventControlActivate },
{ kEventClassControl, kEventControlDeactivate },
{ kEventClassControl, kEventControlValueFieldChanged },
{ kEventClassControl, kEventControlTitleChanged },
{ kEventClassControl, kEventControlEnabledStateChanged },
{ kEventClassControl, kEventControlOwningWindowChanged },
{ kEventClassControl, kEventControlVisibilityChanged },
};
// This param name was accidentally left unexported for
// the release of Jaguar.
const EventParamName kEventParamControlLikesDrag = 'cldg';
//-----------------------------------------------------------------------------------
// TView constructor
//-----------------------------------------------------------------------------------
//
TView::TView(
HIViewRef inView )
: TObject( (HIObjectRef) inView )
{
verify_noerr( AddEventTypesToHandler( GetEventHandler(), GetEventTypeCount( kHIViewEvents ),
kHIViewEvents ) );
}
//-----------------------------------------------------------------------------------
// TView destructor
//-----------------------------------------------------------------------------------
//
TView::~TView()
{
}
//-----------------------------------------------------------------------------------
// Initialize
//-----------------------------------------------------------------------------------
//
OSStatus
TView::Initialize(
TCarbonEvent& inEvent )
{
return noErr;
}
//-----------------------------------------------------------------------------------
// GetBehaviors
//-----------------------------------------------------------------------------------
// Returns our behaviors. Any subclass that overrides this should OR in its behaviors
// into the inherited behaviors.
//
UInt32
TView::GetBehaviors()
{
return kControlSupportsDataAccess | kControlSupportsGetRegion;
}
//-----------------------------------------------------------------------------------
// Draw
//-----------------------------------------------------------------------------------
// Draw your view. You should draw based on VIEW coordinates, not frame coordinates.
//
void
TView::Draw(
RgnHandle inLimitRgn,
CGContextRef inContext )
{
#pragma unused( inLimitRgn, inContext )
}
//-----------------------------------------------------------------------------------
// HitTest
//-----------------------------------------------------------------------------------
// Asks your view to return what part of itself (if any) is hit by the point given
// to it. The point is in VIEW coordinates, so you should get the view rect to do
// bounds checking.
//
ControlPartCode
TView::HitTest(
const HIPoint& inWhere )
{
#pragma unused( inWhere )
return kControlNoPart;
}
//-----------------------------------------------------------------------------------
// GetRegion
//-----------------------------------------------------------------------------------
// This is called when someone wants to know certain metrics regarding this view.
// The base class does nothing. Subclasses should handle their own parts, such as
// the content region by overriding this method. The structure region is, by default,
// the view's bounds. If a subclass does not have a region for a given part, it
// should always call the inherited method.
//
OSStatus
TView::GetRegion(
ControlPartCode inPart,
RgnHandle outRgn )
{
#pragma unused( inPart, outRgn )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// GetData
//-----------------------------------------------------------------------------------
// Gets some data from our view. Subclasses should override to handle their own
// defined data tags. If a tag is not understood by the subclass, it should call the
// inherited method. As a convienience, we map the request for ControlKind into our
// GetKind method.
//
OSStatus
TView::GetData(
OSType inTag,
ControlPartCode inPart,
Size inSize,
Size* outSize,
void* inPtr )
{
#pragma unused( inPart )
OSStatus err = noErr;
switch( inTag )
{
case kControlKindTag:
if ( inPtr )
{
if ( inSize != sizeof( ControlKind ) )
err = errDataSizeMismatch;
else
( *(ControlKind *) inPtr ) = GetKind();
}
*outSize = sizeof( ControlKind );
break;
default:
err = eventNotHandledErr;
break;
}
return err;
}
//-----------------------------------------------------------------------------------
// SetData
//-----------------------------------------------------------------------------------
// Sets some data on our control. Subclasses should override to handle their own
// defined data tags. If a tag is not understood by the subclass, it should call the
// inherited method.
//
OSStatus
TView::SetData(
OSType inTag,
ControlPartCode inPart,
Size inSize,
const void* inPtr )
{
#pragma unused( inTag, inPart, inSize, inPtr )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// GetOptimalSize
//-----------------------------------------------------------------------------------
// Public call to get the optimal size of this view.
//
void
TView::GetOptimalSize(
HISize* outSize,
float* outBaseLine )
{
Rect bounds;
SInt16 baseLine;
TRect frame( Frame() );
bounds = frame;
GetBestControlRect( GetViewRef(), &bounds, &baseLine );
outSize->height = bounds.bottom - bounds.top;
outSize->width = bounds.right - bounds.left;
if ( outBaseLine )
*outBaseLine = (float)baseLine;
}
//-----------------------------------------------------------------------------------
// GetOptimalSizeSelf
//-----------------------------------------------------------------------------------
// Someone wants to know this view's optimal size and text baseline, probably to help
// do some type of layout. The base class does nothing, but subclasses should
// override and do something meaningful here.
//
OSStatus
TView::GetOptimalSizeSelf(
HISize* outSize,
float* outBaseLine )
{
#pragma unused( outSize, outBaseLine )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// GetSizeConstraints
//-----------------------------------------------------------------------------------
// Someone wants to know this view's minimum and maximum sizes, probably to help
// do some type of layout. The base class does nothing, but subclasses should
// override and do something meaningful here.
//
OSStatus
TView::GetSizeConstraints(
HISize* outMin,
HISize* outMax )
{
#pragma unused( outMin, outMax )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// BoundsChanged
//-----------------------------------------------------------------------------------
// The bounds of our view have changed. Subclasses can override here to make note
// of it and flush caches, etc. The base class does nothing.
//
void
TView::BoundsChanged(
UInt32 inOptions,
const HIRect& inOriginalBounds,
const HIRect& inCurrentBounds )
{
#pragma unused( inOptions, inOriginalBounds, inCurrentBounds, inInvalRgn )
}
//-----------------------------------------------------------------------------------
// ControlHit
//-----------------------------------------------------------------------------------
// The was hit. Subclasses can overide to care about what part was hit.
//
OSStatus
TView::ControlHit(
ControlPartCode inPart,
UInt32 inModifiers )
{
#pragma unused( inPart, inModifiers )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// HiliteChanged
//-----------------------------------------------------------------------------------
// The hilite of our view has changed. Subclasses can override here to make note
// of it and flush caches, etc. The base class does nothing.
//
void
TView::HiliteChanged(
ControlPartCode inOriginalPart,
ControlPartCode inCurrentPart )
{
#pragma unused( inOriginalPart, inCurrentPart, inInvalRgn )
}
//-----------------------------------------------------------------------------------
// DragEnter
//-----------------------------------------------------------------------------------
// A drag has entered our bounds. The Drag and Drop interface also should have been
// activated or else this method will NOT be called. If true is returned, this view
// likes the drag and will receive drag within/leave/receive messages as appropriate.
// If false is returned, it is assumed the drag is not valid for this view, and no
// further drag activity will flow into this view unless the drag leaves and is
// re-entered.
//
bool
TView::DragEnter(
DragRef inDrag )
{
#pragma unused( inDrag )
return false;
}
//-----------------------------------------------------------------------------------
// DragWithin
//-----------------------------------------------------------------------------------
// A drag has moved within our bounds. In order for this method to be called, the
// view must have signaled the drag as being desirable in the DragEnter method. The
// Drag and Drop interface also should have been activated.
//
bool
TView::DragWithin(
DragRef inDrag )
{
#pragma unused( inDrag )
return false;
}
//-----------------------------------------------------------------------------------
// DragLeave
//-----------------------------------------------------------------------------------
// A drag has left. Deal with it. Subclasses should override as necessary. The
// Drag and Drop interface should be activated in order for this method to be valid.
// The drag must have also been accepted in the DragEnter method, else this method
// will NOT be called.
//
bool
TView::DragLeave(
DragRef inDrag )
{
#pragma unused( inDrag )
return false;
}
//-----------------------------------------------------------------------------------
// DragReceive
//-----------------------------------------------------------------------------------
// Deal with receiving a drag. By default we return dragNotAcceptedErr. I'm not sure
// if this is correct, or eventNotHandledErr. Time will tell...
//
OSStatus
TView::DragReceive(
DragRef inDrag )
{
#pragma unused( inDrag )
return dragNotAcceptedErr;
}
//-----------------------------------------------------------------------------------
// Track
//-----------------------------------------------------------------------------------
// Default tracking method. Subclasses should override as necessary. We do nothing
// here in the base class, so we return eventNotHandledErr.
//
OSStatus
TView::Track(
TCarbonEvent& inEvent,
ControlPartCode* outPart )
{
#pragma unused( inEvent, outPart )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// SetFocusPart
//-----------------------------------------------------------------------------------
// Handle focusing. Our base behavior is to punt.
//
OSStatus
TView::SetFocusPart(
ControlPartCode inDesiredFocus,
Boolean inFocusEverything,
ControlPartCode* outActualFocus )
{
#pragma unused( inDesiredFocus, inFocusEverything, outActualFocus )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// ProcessCommand
//-----------------------------------------------------------------------------------
// Process a command. Subclasses should override as necessary.
//
OSStatus
TView::ProcessCommand(
const HICommand& inCommand )
{
#pragma unused( inCommand )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// UpdateCommandStatus
//-----------------------------------------------------------------------------------
// Update the status for a command. Subclasses should override as necessary.
//
OSStatus
TView::UpdateCommandStatus(
const HICommand& inCommand )
{
#pragma unused( inCommand )
return eventNotHandledErr;
}
//-----------------------------------------------------------------------------------
// ActivateInterface
//-----------------------------------------------------------------------------------
// This routine is used to allow a subclass to turn on a specific event or suite of
// events, like Drag and Drop. This allows us to keep event traffic down if we are
// not interested, but register for the events if we are.
//
OSStatus
TView::ActivateInterface(
UInt32 inInterface )
{
OSStatus result = noErr;
switch( inInterface )
{
case kDragAndDrop:
{
static const EventTypeSpec kDragEvents[] =
{
{ kEventClassControl, kEventControlDragEnter },
{ kEventClassControl, kEventControlDragLeave },
{ kEventClassControl, kEventControlDragWithin },
{ kEventClassControl, kEventControlDragReceive }
};
result = AddEventTypesToHandler( GetEventHandler(), GetEventTypeCount( kDragEvents ),
kDragEvents );
}
break;
case kKeyboardFocus:
{
static const EventTypeSpec kKeyboardFocusEvents[] =
{
{ kEventClassControl, kEventControlSetFocusPart },
{ kEventClassTextInput, kEventTextInputUnicodeForKeyEvent }
};
result = AddEventTypesToHandler( GetEventHandler(), GetEventTypeCount( kKeyboardFocusEvents ),
kKeyboardFocusEvents );
}
break;
default:
result = TObject::ActivateInterface( inInterface );
break;
}
return result;
}
//-----------------------------------------------------------------------------------
// HandleEvent
//-----------------------------------------------------------------------------------
// Per-instance event handler. Override this method to handle additional events.
// From the overridden method, be sure to call the superclass method to give it a
// chance to handle events or event classes not handled by this override.
//
OSStatus
TView::HandleEvent(
EventHandlerCallRef inCallRef,
TCarbonEvent& inEvent )
{
#pragma unused( inCallRef )
OSStatus result = eventNotHandledErr;
HIPoint where;
OSType tag;
void * ptr;
Size size, outSize;
UInt32 features;
RgnHandle region = NULL;
ControlPartCode part;
switch ( inEvent.GetClass() )
{
case kEventClassCommand:
{
HICommand command;
result = inEvent.GetParameter( kEventParamDirectObject, &command );
require_noerr( result, MissingParameter );
switch ( inEvent.GetKind() )
{
case kEventCommandProcess:
result = ProcessCommand( command );
break;
case kEventCommandUpdateStatus:
result = UpdateCommandStatus( command );
break;
}
}
break;
case kEventClassControl:
switch ( inEvent.GetKind() )
{
case kEventControlInitialize:
features = GetBehaviors();
inEvent.SetParameter( kEventParamControlFeatures, features );
result = noErr;
break;
case kEventControlDraw:
{
CGContextRef context = NULL;
inEvent.GetParameter( kEventParamRgnHandle, &region );
inEvent.GetParameter<CGContextRef>( kEventParamCGContextRef, typeCGContextRef, &context );
Draw( region, context );
result = noErr;
}
break;
case kEventControlHitTest:
inEvent.GetParameter<HIPoint>( kEventParamMouseLocation, typeHIPoint, &where );
part = HitTest( where );
inEvent.SetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, part );
result = noErr;
break;
case kEventControlGetPartRegion:
inEvent.GetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, &part );
inEvent.GetParameter( kEventParamControlRegion, &region );
result = GetRegion( part, region );
break;
case kEventControlGetData:
inEvent.GetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, &part );
inEvent.GetParameter<OSType>( kEventParamControlDataTag, typeEnumeration, &tag );
inEvent.GetParameter<Ptr>( kEventParamControlDataBuffer, typePtr, (Ptr*)&ptr );
inEvent.GetParameter<Size>( kEventParamControlDataBufferSize, typeLongInteger, &size );
result = GetData( tag, part, size, &outSize, ptr );
if ( result == noErr )
verify_noerr( inEvent.SetParameter<Size>( kEventParamControlDataBufferSize, typeLongInteger, outSize ) );
break;
case kEventControlSetData:
inEvent.GetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, &part );
inEvent.GetParameter<OSType>( kEventParamControlDataTag, typeEnumeration, &tag );
inEvent.GetParameter<Ptr>( kEventParamControlDataBuffer, typePtr, (Ptr*)&ptr );
inEvent.GetParameter<Size>( kEventParamControlDataBufferSize, typeLongInteger, &size );
result = SetData( tag, part, size, ptr );
break;
case kEventControlGetOptimalBounds:
{
HISize size;
float floatBaseLine;
result = GetOptimalSizeSelf( &size, &floatBaseLine );
if ( result == noErr )
{
Rect bounds;
SInt16 baseLine;
GetControlBounds( GetViewRef(), &bounds );
bounds.bottom = bounds.top + (SInt16)size.height;
bounds.right = bounds.left + (SInt16)size.width;
baseLine = (SInt16)floatBaseLine;
inEvent.SetParameter( kEventParamControlOptimalBounds, bounds );
inEvent.SetParameter<SInt16>( kEventParamControlOptimalBaselineOffset, typeShortInteger, baseLine );
}
}
break;
case kEventControlBoundsChanged:
{
HIRect prevRect, currRect;
UInt32 attrs;
inEvent.GetParameter( kEventParamAttributes, &attrs );
inEvent.GetParameter( kEventParamOriginalBounds, &prevRect );
inEvent.GetParameter( kEventParamCurrentBounds, &currRect );
BoundsChanged( attrs, prevRect, currRect );
return noErr;
}
break;
case kEventControlHit:
{
UInt32 modifiers;
inEvent.GetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, &part );
inEvent.GetParameter( kEventParamKeyModifiers, &modifiers );
result = ControlHit( part, modifiers );
}
break;
case kEventControlHiliteChanged:
{
ControlPartCode prevPart, currPart;
prevPart = inEvent.GetParameter<ControlPartCode>( kEventParamControlPreviousPart, typeControlPartCode );
currPart = inEvent.GetParameter<ControlPartCode>( kEventParamControlCurrentPart, typeControlPartCode );
HiliteChanged( prevPart, currPart );
if ( GetAutoInvalidateFlags() & kAutoInvalidateOnHilite )
Invalidate();
result = noErr;
}
break;
case kEventControlActivate:
ActiveStateChanged();
if ( GetAutoInvalidateFlags() & kAutoInvalidateOnActivate )
Invalidate();
result = noErr;
break;
case kEventControlDeactivate:
ActiveStateChanged();
if ( GetAutoInvalidateFlags() & kAutoInvalidateOnActivate )
Invalidate();
result = noErr;
break;
case kEventControlValueFieldChanged:
ValueChanged();
if ( GetAutoInvalidateFlags() & kAutoInvalidateOnValueChange )
Invalidate();
result = noErr;
break;
case kEventControlTitleChanged:
TitleChanged();
if ( GetAutoInvalidateFlags() & kAutoInvalidateOnTitleChange )
Invalidate();
result = noErr;
break;
case kEventControlEnabledStateChanged:
EnabledStateChanged();
if ( GetAutoInvalidateFlags() & kAutoInvalidateOnEnable )
Invalidate();
result = noErr;
break;
case kEventControlOwningWindowChanged:
{
WindowRef oldWindow, newWindow;
inEvent.GetParameter<WindowRef>( kEventParamControlOriginalOwningWindow, typeWindowRef, &oldWindow );
inEvent.GetParameter<WindowRef>( kEventParamControlCurrentOwningWindow, typeWindowRef, &newWindow );
OwningWindowChanged( oldWindow, newWindow );
result = noErr;
}
break;
case kEventControlVisibilityChanged:
{
VisibilityChanged();
result = noErr;
}
break;
case kEventControlDragEnter:
case kEventControlDragLeave:
case kEventControlDragWithin:
{
DragRef drag;
bool likesDrag;
inEvent.GetParameter( kEventParamDragRef, &drag );
switch ( inEvent.GetKind() )
{
case kEventControlDragEnter:
likesDrag = DragEnter( drag );
result = inEvent.SetParameter( kEventParamControlLikesDrag, likesDrag );
break;
case kEventControlDragLeave:
likesDrag = DragLeave( drag );
result = inEvent.SetParameter( kEventParamControlLikesDrag, likesDrag );
break;
case kEventControlDragWithin:
likesDrag = DragWithin( drag );
result = inEvent.SetParameter( kEventParamControlLikesDrag, likesDrag );
break;
}
}
break;
case kEventControlDragReceive:
{
DragRef drag;
inEvent.GetParameter( kEventParamDragRef, &drag );
result = DragReceive( drag );
}
break;
case kEventControlTrack:
{
ControlPartCode part;
result = Track( inEvent, &part );
if ( result == noErr )
verify_noerr( inEvent.SetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, part ) );
}
break;
case kEventControlGetSizeConstraints:
{
HISize minSize, maxSize;
result = GetSizeConstraints( &minSize, &maxSize );
if ( result == noErr )
{
verify_noerr( inEvent.SetParameter( kEventParamMinimumSize, minSize ) );
verify_noerr( inEvent.SetParameter( kEventParamMaximumSize, maxSize ) );
}
}
break;
case kEventControlSetFocusPart:
{
ControlPartCode desiredFocus;
Boolean focusEverything;
ControlPartCode actualFocus;
result = inEvent.GetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, &desiredFocus );
require_noerr( result, MissingParameter );
focusEverything = false; // a good default in case the parameter doesn't exist
inEvent.GetParameter( kEventParamControlFocusEverything, &focusEverything );
result = SetFocusPart( desiredFocus, focusEverything, &actualFocus );
if ( result == noErr )
verify_noerr( inEvent.SetParameter<ControlPartCode>( kEventParamControlPart, typeControlPartCode, actualFocus ) );
}
break;
// some other kind of Control event
default:
// If you are reading this code to model your subclass, this would be a good
// place to call your superclasses' method. TObject::HandleEvent doesn't care
// about control events, so we don't pass the buck, but you should if you
// are subclassing TView, calling TView::HandleEvent for your unhandled events
break;
}
break;
case kEventClassTextInput:
result = TextInput( inEvent );
break;
default:
// Some other event class, let the superclass handle it
result = TObject::HandleEvent( inCallRef, inEvent );
break;
}
MissingParameter:
return result;
}
//-----------------------------------------------------------------------------------
// Frame
//-----------------------------------------------------------------------------------
//
HIRect
TView::Frame()
{
HIRect frame;
HIViewGetFrame( GetViewRef(), &frame );
return frame;
}
//-----------------------------------------------------------------------------------
// SetFrame
//-----------------------------------------------------------------------------------
//
void
TView::SetFrame(
const HIRect& inFrame )
{
verify_noerr( HIViewSetFrame( GetViewRef(), &inFrame ) );
}
//-----------------------------------------------------------------------------------
// Bounds
//-----------------------------------------------------------------------------------
//
HIRect
TView::Bounds()
{
HIRect bounds;
verify_noerr( HIViewGetBounds( GetViewRef(), &bounds ) );