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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* Retrieves and displays icons on the macOS Touch Bar.
*/
#include "nsTouchBarInputIcon.h"
#include "MOZIconHelper.h"
#include "mozilla/dom/Document.h"
#include "nsCocoaUtils.h"
#include "nsComputedDOMStyle.h"
#include "nsContentUtils.h"
#include "nsGkAtoms.h"
#include "nsINode.h"
#include "nsNameSpaceManager.h"
#include "nsObjCExceptions.h"
using namespace mozilla;
using mozilla::widget::IconLoader;
static const uint32_t kIconHeight = 16;
static const CGFloat kHiDPIScalingFactor = 2.0f;
nsTouchBarInputIcon::nsTouchBarInputIcon(RefPtr<Document> aDocument, TouchBarInput* aInput,
NSTouchBarItem* aItem)
: mDocument(aDocument), mSetIcon(false), mButton(nil), mShareScrubber(nil), mPopoverItem(nil) {
if ([[aInput nativeIdentifier] isEqualToString:[TouchBarInput shareScrubberIdentifier]]) {
mShareScrubber = (NSSharingServicePickerTouchBarItem*)aItem;
} else if ([aInput baseType] == TouchBarInputBaseType::kPopover) {
mPopoverItem = (NSPopoverTouchBarItem*)aItem;
} else if ([aInput baseType] == TouchBarInputBaseType::kButton ||
[aInput baseType] == TouchBarInputBaseType::kMainButton) {
mButton = (NSButton*)[aItem view];
} else {
NS_ERROR("Incompatible Touch Bar input passed to nsTouchBarInputIcon.");
}
aInput = nil;
MOZ_COUNT_CTOR(nsTouchBarInputIcon);
}
nsTouchBarInputIcon::~nsTouchBarInputIcon() {
Destroy();
MOZ_COUNT_DTOR(nsTouchBarInputIcon);
}
// Called from nsTouchBar's destructor, to prevent us from outliving it
// (as might otherwise happen if calls to our imgINotificationObserver methods
// are still outstanding). nsTouchBar owns our mTouchBarInput.
void nsTouchBarInputIcon::Destroy() {
ReleaseJSObjects();
if (mIconLoader) {
mIconLoader->Destroy();
mIconLoader = nullptr;
}
mButton = nil;
mShareScrubber = nil;
mPopoverItem = nil;
}
nsresult nsTouchBarInputIcon::SetupIcon(nsCOMPtr<nsIURI> aIconURI) {
NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
// We might not have a document if the Touch Bar tries to update when the main
// window is closed.
if (!mDocument) {
return NS_OK;
}
if (!(mButton || mShareScrubber || mPopoverItem)) {
NS_ERROR("No Touch Bar input provided.");
return NS_ERROR_FAILURE;
}
if (!mIconLoader) {
mIconLoader = new IconLoader(this);
}
if (!mSetIcon) {
// Load placeholder icon.
NSSize iconSize = NSMakeSize(kIconHeight, kIconHeight);
NSImage* placeholder = [MOZIconHelper placeholderIconWithSize:iconSize];
[mButton setImage:placeholder];
[mShareScrubber setButtonImage:placeholder];
[mPopoverItem setCollapsedRepresentationImage:placeholder];
}
nsresult rv = mIconLoader->LoadIcon(aIconURI, mDocument, true /* aIsInternalIcon */);
if (NS_FAILED(rv)) {
// There is no icon for this menu item, as an error occurred while loading it.
// An icon might have been set earlier or the place holder icon may have
// been set. Clear it.
[mButton setImage:nil];
[mShareScrubber setButtonImage:nil];
[mPopoverItem setCollapsedRepresentationImage:nil];
}
mSetIcon = true;
return rv;
NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
}
void nsTouchBarInputIcon::ReleaseJSObjects() { mDocument = nil; }
//
// mozilla::widget::IconLoader::Listener
//
nsresult nsTouchBarInputIcon::OnComplete(imgIContainer* aImage) {
NS_OBJC_BEGIN_TRY_BLOCK_RETURN
// We ask only for the HiDPI images since all Touch Bars are Retina
// displays and we have no need for icons @1x.
NSImage* image = [MOZIconHelper iconImageFromImageContainer:aImage
withSize:NSMakeSize(kIconHeight, kIconHeight)
presContext:nullptr
computedStyle:nullptr
subrect:mImageRegionRect
scaleFactor:kHiDPIScalingFactor];
[mButton setImage:image];
[mShareScrubber setButtonImage:image];
[mPopoverItem setCollapsedRepresentationImage:image];
mIconLoader->Destroy();
return NS_OK;
NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE)
}
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