forked from mirrors/gecko-dev
aa43b81cc5
Images like the one in comment 1 would end with a zero size otherwise and fail to render. The caller usually knows the size it wants to render into, so use that. For now for the purposes of the containers extension I can work around it by specifying a width/height, but it seems worth fixing regardless. Differential Revision: https://phabricator.services.mozilla.com/D203340
61 lines
2.1 KiB
Text
61 lines
2.1 KiB
Text
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Creates icons for display in native menu items on macOS.
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*/
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#include "MOZIconHelper.h"
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#include "imgIContainer.h"
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#include "nsCocoaUtils.h"
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@implementation MOZIconHelper
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// Returns an autoreleased empty NSImage.
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+ (NSImage*)placeholderIconWithSize:(NSSize)aSize {
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return [[[NSImage alloc] initWithSize:aSize] autorelease];
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}
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// Returns an autoreleased NSImage.
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+ (NSImage*)iconImageFromImageContainer:(imgIContainer*)aImage
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withSize:(NSSize)aSize
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presContext:(const nsPresContext*)aPresContext
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computedStyle:
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(const mozilla::ComputedStyle*)aComputedStyle
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scaleFactor:(CGFloat)aScaleFactor {
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bool isEntirelyBlack = false;
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NSImage* retainedImage = nil;
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nsresult rv;
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if (aScaleFactor != 0.0f) {
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rv = nsCocoaUtils::CreateNSImageFromImageContainer(
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aImage, imgIContainer::FRAME_CURRENT, aPresContext, aComputedStyle,
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aSize, &retainedImage, aScaleFactor, &isEntirelyBlack);
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} else {
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rv = nsCocoaUtils::CreateDualRepresentationNSImageFromImageContainer(
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aImage, imgIContainer::FRAME_CURRENT, aPresContext, aComputedStyle,
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aSize, &retainedImage, &isEntirelyBlack);
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}
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NSImage* image = [retainedImage autorelease];
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if (NS_FAILED(rv) || !image) {
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return nil;
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}
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// If all the color channels in the image are black, treat the image as a
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// template. This will cause macOS to use the image's alpha channel as a mask
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// and it will fill it with a color that looks good in the context that it's
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// used in. For example, for regular menu items, the image will be black, but
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// when the menu item is hovered (and its background is blue), it will be
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// filled with white.
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[image setTemplate:isEntirelyBlack];
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[image setSize:aSize];
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return image;
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}
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@end
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