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/*
File: AUCarbonViewBase.cpp
Abstract: AUCarbonViewBase.h
Version: 1.1
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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 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 (C) 2014 Apple Inc. All Rights Reserved.
*/
#include "AUCarbonViewBase.h"
#include "AUCarbonViewControl.h"
#include <algorithm>
AUCarbonViewBase::AUCarbonViewBase(AudioUnitCarbonView inInstance, Float32 inNotificationInterval /* in seconds */) :
ComponentBase(inInstance),
mEditAudioUnit(0),
mParameterListener(NULL),
#if !__LP64__
mEventListener(NULL),
#endif
mTimerRef (NULL),
mTimerUPP (NULL),
mCarbonWindow(NULL),
mCarbonPane(NULL),
mXOffset(0),
mYOffset(0)
{
AUEventListenerCreate (ParameterListener, this,
CFRunLoopGetCurrent(), kCFRunLoopCommonModes,
inNotificationInterval, inNotificationInterval,
&mParameterListener);
}
AUCarbonViewBase::~AUCarbonViewBase()
{
#if !__LP64__
if (mCarbonPane)
DisposeControl(mCarbonPane);
for (ControlList::iterator it = mControlList.begin(); it != mControlList.end(); ++it) {
AUCarbonViewControl *ctl = *it;
delete ctl;
}
AUListenerDispose(mParameterListener);
if (mTimerRef)
::RemoveEventLoopTimer (mTimerRef);
if (mTimerUPP)
DisposeEventLoopTimerUPP (mTimerUPP);
#endif
}
void AUCarbonViewBase::AddControl(AUCarbonViewControl *control)
{
ControlList::iterator it = find(mControlList.begin(), mControlList.end(), control);
if (it == mControlList.end())
mControlList.push_back(control);
}
void AUCarbonViewBase::RemoveControl(AUCarbonViewControl *control)
{
ControlList::iterator it = find(mControlList.begin(), mControlList.end(), control);
if (it != mControlList.end()) {
AUCarbonViewControl *ctl = *it;
mControlList.erase(it);
delete ctl;
}
}
void AUCarbonViewBase::ClearControls ()
{
for (ControlList::iterator it = mControlList.begin(); it != mControlList.end(); ++it) {
AUCarbonViewControl *ctl = *it;
delete ctl;
}
mControlList.clear();
}
void AUCarbonViewBase::ParameterListener(void * inCallbackRefCon,
void * inObject,
const AudioUnitEvent * inEvent,
UInt64 inEventHostTime,
Float32 inParameterValue)
{
if (inEvent->mEventType == kAudioUnitEvent_ParameterValueChange) {
AUCarbonViewControl *ctl = (AUCarbonViewControl *)inObject;
ctl->ParameterToControl(inParameterValue);
}
}
OSStatus AUCarbonViewBase::CreateCarbonView(AudioUnit inAudioUnit, WindowRef inWindow, ControlRef inParentControl, const Float32Point &inLocation, const Float32Point &inSize, ControlRef &outParentControl)
{
#if !__LP64__
mEditAudioUnit = inAudioUnit;
mCarbonWindow = inWindow;
WindowAttributes attributes;
verify_noerr(GetWindowAttributes(mCarbonWindow, &attributes));
mCompositWindow = (attributes & kWindowCompositingAttribute) != 0;
Rect area;
area.left = short(inLocation.x); area.top = short(inLocation.y);
area.right = short(area.left + inSize.x); area.bottom = short(area.top + inSize.y);
OSStatus err = ::CreateUserPaneControl(inWindow, &area,
kControlSupportsEmbedding,
&mCarbonPane); // subclass can resize mCarbonPane to taste
verify_noerr(err);
if (err) return err;
outParentControl = mCarbonPane;
// register for mouse-down in our pane -- we want to clear focus
EventTypeSpec paneEvents[] = {
{ kEventClassControl, kEventControlClick }
};
WantEventTypes(GetControlEventTarget(mCarbonPane), GetEventTypeCount(paneEvents), paneEvents);
if (IsCompositWindow()) {
verify_noerr(::HIViewAddSubview(inParentControl, mCarbonPane));
mXOffset = 0;
mYOffset = 0;
}
else {
verify_noerr(::EmbedControl(mCarbonPane, inParentControl));
mXOffset = inLocation.x;
mYOffset = inLocation.y;
}
mBottomRight.h = mBottomRight.v = 0;
SizeControl(mCarbonPane, 0, 0);
if (err = CreateUI(mXOffset, mYOffset))
return err;
// we should only resize the control if a subclass has embedded
// controls in this AND this is done with the EmbedControl call below
// if mBottomRight is STILL equal to zero, then that wasn't done
// so don't size the control
Rect paneBounds;
GetControlBounds(mCarbonPane, &paneBounds);
// only resize mCarbonPane if it has not already been resized during CreateUI
if ((paneBounds.top == paneBounds.bottom) && (paneBounds.left == paneBounds.right)) {
if (mBottomRight.h != 0 && mBottomRight.v != 0)
SizeControl(mCarbonPane, (short) (mBottomRight.h - mXOffset), (short) (mBottomRight.v - mYOffset));
}
if (IsCompositWindow()) {
// prepare for handling scroll-events
EventTypeSpec scrollEvents[] = {
{ kEventClassScrollable, kEventScrollableGetInfo },
{ kEventClassScrollable, kEventScrollableScrollTo }
};
WantEventTypes(GetControlEventTarget(mCarbonPane), GetEventTypeCount(scrollEvents), scrollEvents);
mCurrentScrollPoint.x = mCurrentScrollPoint.y = 0.0f;
}
return err;
#else
return noErr;
#endif
}
OSStatus AUCarbonViewBase::CreateUI(Float32 inXOffset, Float32 inYOffset)
{
return noErr;
}
OSStatus AUCarbonViewBase::EmbedControl(ControlRef ctl)
{
#if !__LP64__
Rect r;
::GetControlBounds(ctl, &r);
if (r.right > mBottomRight.h) mBottomRight.h = r.right;
if (r.bottom > mBottomRight.v) mBottomRight.v = r.bottom;
if (IsCompositWindow())
return ::HIViewAddSubview(mCarbonPane, ctl);
else
return ::EmbedControl(ctl, mCarbonPane);
#else
return noErr;
#endif
}
void AUCarbonViewBase::AddCarbonControl(AUCarbonViewControl::ControlType type, const CAAUParameter ¶m, ControlRef control)
{
verify_noerr(EmbedControl(control));
AUCarbonViewControl *auvc = new AUCarbonViewControl(this, mParameterListener, type, param, control);
auvc->Bind();
AddControl(auvc);
}
bool AUCarbonViewBase::HandleEvent(EventHandlerCallRef inHandlerRef, EventRef event)
{
#if !__LP64__
UInt32 eclass = GetEventClass(event);
UInt32 ekind = GetEventKind(event);
ControlRef control;
switch (eclass) {
case kEventClassControl:
{
switch (ekind) {
case kEventControlClick:
GetEventParameter(event, kEventParamDirectObject, typeControlRef, NULL, sizeof(ControlRef), NULL, &control);
if (control == mCarbonPane) {
ClearKeyboardFocus(mCarbonWindow);
return true;
}
}
}
break;
case kEventClassScrollable:
{
switch (ekind) {
case kEventScrollableGetInfo:
{
// [1/4]
/* <-- kEventParamImageSize (out, typeHISize)
* On exit, contains the size of the entire scrollable view.
*/
HISize originalSize = { mBottomRight.h, mBottomRight.v };
verify_noerr(SetEventParameter(event, kEventParamImageSize, typeHISize, sizeof(HISize), &originalSize));
// [2/4]
/* <-- kEventParamViewSize (out, typeHISize)
* On exit, contains the amount of the scrollable view that is
* visible.
*/
HIViewRef parentView = HIViewGetSuperview(mCarbonPane);
HIRect parentBounds;
verify_noerr(HIViewGetBounds(parentView, &parentBounds));
//HISize windowSize = { float(windowBounds.right - windowBounds.left),
// float(windowBounds.bottom - windowBounds.top) };
verify_noerr(SetEventParameter(event, kEventParamViewSize, typeHISize, sizeof(HISize), &(parentBounds.size)));
// [3/4]
/* <-- kEventParamLineSize (out, typeHISize)
* On exit, contains the amount that should be scrolled in
* response to a single click on a scrollbar arrow.
*/
HISize scrollIncrementSize = { 16.0f, float(20) };
verify_noerr(SetEventParameter(event, kEventParamLineSize, typeHISize, sizeof(HISize), &scrollIncrementSize));
// [4/4]
/* <-- kEventParamOrigin (out, typeHIPoint)
* On exit, contains the scrollable viewÕs current origin (the
* view-relative coordinate that is drawn at the top left
* corner of its frame). These coordinates should always be
* greater than or equal to zero. They should be less than or
* equal to the viewÕs image size minus its view size.
*/
verify_noerr(SetEventParameter(event, kEventParamOrigin, typeHIPoint, sizeof(HIPoint), &mCurrentScrollPoint));
}
return true;
case kEventScrollableScrollTo:
{
/*
* kEventClassScrollable / kEventScrollableScrollTo
*
* Summary:
* Requests that an HIScrollViewÕs scrollable view should scroll to
* a particular origin.
*/
/* --> kEventParamOrigin (in, typeHIPoint)
* The new origin for the scrollable view. The origin
* coordinates will vary from (0,0) to scrollable viewÕs image
* size minus its view size.
*/
HIPoint pointToScrollTo;
verify_noerr(GetEventParameter(event, kEventParamOrigin, typeHIPoint, NULL, sizeof(HIPoint), NULL, &pointToScrollTo));
float xDelta = mCurrentScrollPoint.x - pointToScrollTo.x;
float yDelta = mCurrentScrollPoint.y - pointToScrollTo.y;
// move visible portion the appropriate amount
verify_noerr(HIViewScrollRect(mCarbonPane, NULL, xDelta, yDelta));
// set new content to be drawn
verify_noerr(HIViewSetBoundsOrigin(mCarbonPane, pointToScrollTo.x, pointToScrollTo.y));
mCurrentScrollPoint = pointToScrollTo;
}
return true;
default:
break;
}
}
break;
default:
break;
}
#endif
return false;
}
/*! @method TellListener */
void AUCarbonViewBase::TellListener (const CAAUParameter &auvp, AudioUnitCarbonViewEventID event, void *evpar)
{
#if !__LP64__
if (mEventListener)
(*mEventListener)(mEventListenerUserData, mComponentInstance, &auvp, event, evpar);
#endif
AudioUnitEvent auEvent;
auEvent.mArgument.mParameter = auvp;
if (event == kAudioUnitCarbonViewEvent_MouseDownInControl) {
auEvent.mEventType = kAudioUnitEvent_BeginParameterChangeGesture;
} else {
auEvent.mEventType = kAudioUnitEvent_EndParameterChangeGesture;
}
AUEventListenerNotify(mParameterListener, this, &auEvent);
}
void AUCarbonViewBase::Update (bool inUIThread)
{
for (ControlList::iterator iter = mControlList.begin(); iter != mControlList.end(); ++iter)
{
(*iter)->Update(inUIThread);
}
}
pascal void AUCarbonViewBase::TheTimerProc (EventLoopTimerRef inTimer, void *inUserData)
{
AUCarbonViewBase* This = reinterpret_cast<AUCarbonViewBase*>(inUserData);
This->RespondToEventTimer (inTimer);
}
void AUCarbonViewBase::RespondToEventTimer (EventLoopTimerRef inTimer)
{}
/*
THESE are reasonable values for these two times
0.005 // delay
0.050 // interval
*/
OSStatus AUCarbonViewBase::CreateEventLoopTimer (Float32 inDelay, Float32 inInterval)
{
if (mTimerUPP)
return noErr;
mTimerUPP = NewEventLoopTimerUPP(TheTimerProc);
EventLoopRef mainEventLoop = GetMainEventLoop();
//doesn't seem to like too small a value
if (inDelay < 0.005)
inDelay = 0.005;
OSStatus timerResult = ::InstallEventLoopTimer(
mainEventLoop,
inDelay,
inInterval,
mTimerUPP,
this,
&mTimerRef);
return timerResult;
}
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