153 lines
5.1 KiB
C++
153 lines
5.1 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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extern Image JUCE_API getIconFromApplication (const String&, int);
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static Image getIconFromIcnsFile (const File& icnsFile, const int size)
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{
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FileInputStream stream (icnsFile);
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if (! stream.openedOk())
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return {};
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const int numHeaderSectionBytes = 4;
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char headerSection [numHeaderSectionBytes];
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if (stream.read (headerSection, numHeaderSectionBytes) != numHeaderSectionBytes
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|| headerSection[0] != 'i'
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|| headerSection[1] != 'c'
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|| headerSection[2] != 'n'
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|| headerSection[3] != 's')
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return {};
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if (stream.read (headerSection, numHeaderSectionBytes) != numHeaderSectionBytes)
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return {};
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const auto dataSize = juce::ByteOrder::bigEndianInt (headerSection);
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if (dataSize <= 0)
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return {};
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OwnedArray<juce::ImageFileFormat> internalFormats;
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internalFormats.add (new PNGImageFormat());
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internalFormats.add (new JPEGImageFormat());
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Array<Image> images;
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auto maxWidth = 0;
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auto maxWidthIndex = -1;
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while (stream.getPosition() < dataSize)
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{
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const auto sectionStart = stream.getPosition();
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if (! stream.setPosition (sectionStart + 4))
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break;
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if (stream.read (headerSection, numHeaderSectionBytes) != numHeaderSectionBytes)
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break;
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const auto sectionSize = ByteOrder::bigEndianInt (headerSection);
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if (sectionSize <= 0)
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break;
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const auto sectionDataStart = stream.getPosition();
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for (auto* fmt : internalFormats)
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{
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if (fmt->canUnderstand (stream))
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{
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stream.setPosition (sectionDataStart);
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images.add (fmt->decodeImage (stream));
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const auto lastImageIndex = images.size() - 1;
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const auto lastWidth = images.getReference (lastImageIndex).getWidth();
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if (lastWidth > maxWidth)
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{
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maxWidthIndex = lastImageIndex;
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maxWidth = lastWidth;
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}
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}
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stream.setPosition (sectionDataStart);
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}
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stream.setPosition (sectionStart + sectionSize);
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}
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return maxWidthIndex == -1 ? juce::Image()
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: images.getReference (maxWidthIndex).rescaled (size, size, Graphics::ResamplingQuality::highResamplingQuality);
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}
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Image JUCE_API getIconFromApplication (const String& applicationPath, const int size)
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{
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Image hostIcon;
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if (CFStringRef pathCFString = CFStringCreateWithCString (kCFAllocatorDefault, applicationPath.toRawUTF8(), kCFStringEncodingUTF8))
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{
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if (CFURLRef url = CFURLCreateWithFileSystemPath (kCFAllocatorDefault, pathCFString, kCFURLPOSIXPathStyle, 1))
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{
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if (CFBundleRef appBundle = CFBundleCreate (kCFAllocatorDefault, url))
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{
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if (CFTypeRef infoValue = CFBundleGetValueForInfoDictionaryKey (appBundle, CFSTR("CFBundleIconFile")))
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{
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if (CFGetTypeID (infoValue) == CFStringGetTypeID())
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{
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CFStringRef iconFilename = reinterpret_cast<CFStringRef> (infoValue);
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CFStringRef resourceURLSuffix = CFStringHasSuffix (iconFilename, CFSTR(".icns")) ? nullptr : CFSTR("icns");
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if (CFURLRef iconURL = CFBundleCopyResourceURL (appBundle, iconFilename, resourceURLSuffix, nullptr))
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{
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if (CFStringRef iconPath = CFURLCopyFileSystemPath (iconURL, kCFURLPOSIXPathStyle))
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{
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File icnsFile (CFStringGetCStringPtr (iconPath, CFStringGetSystemEncoding()));
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hostIcon = getIconFromIcnsFile (icnsFile, size);
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CFRelease (iconPath);
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}
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CFRelease (iconURL);
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}
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}
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}
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CFRelease (appBundle);
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}
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CFRelease (url);
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}
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CFRelease (pathCFString);
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}
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return hostIcon;
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}
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} // namespace juce
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