58 lines
1.8 KiB
Objective-C
58 lines
1.8 KiB
Objective-C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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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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#import <Quartz/Quartz.h>
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#import "PreviewViewController.h"
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#import "OOoSpotlightAndQuickLookImporter.h"
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@implementation PreviewViewController
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- (void)preparePreviewOfFileAtURL:(NSURL *)url completionHandler:(void (^)(NSError * _Nullable))handler {
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if (!url || ![url isFileURL]) {
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handler([[NSError alloc] initWithDomain:NSURLErrorDomain code:NSURLErrorUnsupportedURL userInfo:nil]);
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return;
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}
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NSAutoreleasePool *pool = [NSAutoreleasePool new];
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OOoSpotlightAndQuickLookImporter *importer = [OOoSpotlightAndQuickLookImporter new];
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NSImage *image = nil;
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@try {
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image = [importer importDocumentThumbnail:[url path]];
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}
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@catch (NSException *exception) {
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NSLog(@"preparePreviewOfFileAtURL: Caught %@: %@", [exception name], [exception reason]);
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}
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[importer release];
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if (!image) {
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handler([[NSError alloc] initWithDomain:NSURLErrorDomain code:NSURLErrorUnsupportedURL userInfo:nil]);
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[pool release];
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return;
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}
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// Make image automatic scale to the size of the view while preserving the
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// image's aspect ratio by using a CALayer to handle image drawing:
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// https://stackoverflow.com/questions/23002653/nsimageview-image-aspect-fill
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self.view.layer = [CALayer layer];
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self.view.layer.contentsGravity = kCAGravityResizeAspect;
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self.view.layer.contents = image;
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self.view.wantsLayer = YES;
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handler(nil);
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[pool release];
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}
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@end
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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