Difference between revisions of "Mac OS X Implementing HIView"

Revision as of 15:59, 12 March 2007 (view source) Ericb (Talk | contribs) (→‎Events) ← Older edit		Revision as of 16:03, 12 March 2007 (view source) Ericb (Talk | contribs) (→‎Handlers) Newer edit →
Line 39:		Line 39:
	=== Handlers ===		=== Handlers ===
−	[FIXME]	+	The Handler is OSStatus type, and is used when events are detected.
		+
		+	e.g.  : we created HandleHIViewEvent()
		+
		+	using GetEventParameter, itself using the parameters described in Apple documentation.
		+
		+	Code sample :
		+	<pre>
		+	OSStatus HandleHIViewEvent(EventHandlerCallRef inHandlerCallRef, EventRef inEvent, void* inUserData)
		+	{
		+	ImplSalYieldMutexAcquire();
		+	OSStatus status = noErr;
		+	CGContextRef mrContext;
		+	HIRect bounds;  // 1
		+	status = GetEventParameter (inEvent,
		+	kEventParamCGContextRef,
		+	typeCGContextRef,
		+	NULL,
		+	sizeof (CGContextRef),
		+	NULL,
		+	&mrContext);
		+
		+	//require_noerr(status, CantGetGraphicsContext); // 2
		+	HIViewGetBounds ((HIViewRef) inUserData, &bounds);
		+	//require_noerr(status, CantGetBoundingRectangle);
		+	ImplSalYieldMutexRelease();
		+
		+	return status;
		+	}
		+	</pre>
	=== Controls ===		=== Controls ===

---

Revision as of 16:03, 12 March 2007

Contributors

Eric Bachard[ericb]

Sébastien Plisson [plipli]

Introduction

This page is part of [Native Controls Implementation] and the objective is to use HIView for HIComboboxes or other HI* controls.

Current code implementation

Events

Two sorts of events are needed:

• for objects (ClasskEventClassHIObject )  :

kEventHIObjectConstruct

kEventHIObjectInitialize

kEventHIObjectDestruct

• for controls themselves ( Class kEventClassControl ) :

kEventControlDraw 

kEventControlInitialize

kEventControlHitTest

kEventControlGetPartRegion

kEventControlBoundsChanged

Current implementation : see vcl/aqua/aquavclevents.hxx for more informations about the syntax.

Handlers

The Handler is OSStatus type, and is used when events are detected.

e.g.  : we created HandleHIViewEvent()

using GetEventParameter, itself using the parameters described in Apple documentation.

Code sample :

OSStatus HandleHIViewEvent(EventHandlerCallRef inHandlerCallRef, EventRef inEvent, void* inUserData)
{ 
    ImplSalYieldMutexAcquire();
    OSStatus status = noErr;
    CGContextRef mrContext; 
    HIRect bounds;  // 1
    status = GetEventParameter (inEvent, 
                                kEventParamCGContextRef, 
                                typeCGContextRef, 
                                NULL, 
                                sizeof (CGContextRef), 
                                NULL, 
                                &mrContext); 
    
    //require_noerr(status, CantGetGraphicsContext); // 2
    HIViewGetBounds ((HIViewRef) inUserData, &bounds); 
    //require_noerr(status, CantGetBoundingRectangle);
    ImplSalYieldMutexRelease();
    
    return status;  
} 

Controls

[FIXME]

Usefull Links

Reference

HIVIew  : [reference]

or : [same in .pdf format]

Code sample