File size: 2,968 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | // SPDX-License-Identifier: LGPL-2.1-or-later
#include <CoreFoundation/CoreFoundation.h>
#include <CoreServices/CoreServices.h>
#include <QuickLook/QuickLook.h>
#include <Foundation/Foundation.h>
#include <AppKit/AppKit.h>
/* -----------------------------------------------------------------------------
Generate a thumbnail for file
This function's job is to create thumbnail for designated file as fast as possible
----------------------------------------------------------------------------- */
OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize)
{
OSStatus ret = coreFoundationUnknownErr;
@autoreleasepool {
// unzip -qq -o -j -d /tmp ~/test.FCStd thumbnails/Thumbnail.png
// -qq : be really quiet
// -o : overwrite without prompt
// -j : don't create archive paths
// -d : destination path (create this path)
// extracts thumbnails/Thumbnail.png to /tmp/Thumbnail.png .
// We add a UUID and use a system temp directory here.
NSUUID *uuid = [NSUUID UUID];
NSString *uuidPath = [uuid UUIDString];
NSString *unzipDstPath = [NSString stringWithFormat:@"%@/%@/", NSTemporaryDirectory(), uuidPath];
NSString *unzipDstFile = [NSString stringWithFormat:@"%@%@", unzipDstPath, @"Thumbnail.png"];
NSURL *zipFile = (__bridge NSURL *)url;
NSTask *task = [NSTask launchedTaskWithLaunchPath:@"/usr/bin/unzip"
arguments:@[@"-qq", @"-o", @"-j", @"-d", unzipDstPath, [zipFile path], @"thumbnails/Thumbnail.png"]];
[task waitUntilExit];
// NSLog(@"%@", unzipDstPath);
// NSLog(@"%@", unzipDstFile);
if ( [[NSFileManager defaultManager] fileExistsAtPath:unzipDstFile] )
{
CGSize canvasSize = CGSizeMake(128, 128);
CGContextRef cgContext = QLThumbnailRequestCreateContext(thumbnail, /*maxSize*/canvasSize, true, NULL);
if(cgContext)
{
CGDataProviderRef pngDP = CGDataProviderCreateWithFilename([unzipDstFile fileSystemRepresentation]);
CGImageRef image = CGImageCreateWithPNGDataProvider(pngDP, NULL, true, kCGRenderingIntentDefault);
CGDataProviderRelease(pngDP);
CGContextDrawImage(cgContext,CGRectMake(0, 0, 128, 128), image);
QLThumbnailRequestFlushContext(thumbnail, cgContext);
ret = noErr;
CFRelease(cgContext);
CFRelease(image);
}
}
if ( [[NSFileManager defaultManager] isDeletableFileAtPath:unzipDstFile] )
[[NSFileManager defaultManager] removeItemAtPath:unzipDstFile error:nil];
if ( [[NSFileManager defaultManager] isDeletableFileAtPath:unzipDstPath] )
[[NSFileManager defaultManager] removeItemAtPath:unzipDstPath error:nil];
}
return ret;
}
void CancelThumbnailGeneration(void* thisInterface, QLThumbnailRequestRef thumbnail)
{
// implement only if supported
}
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