AppDelegate.m
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上传日期:2020-08-12
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- /*
- File: AppDelegate.m
- Contains: Main app controller.
- Written by: DTS
- Copyright: Copyright (c) 2009 Apple Inc. All Rights Reserved.
- Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
- ("Apple") in consideration of your agreement to the following
- terms, and your use, installation, modification or
- redistribution of this Apple software constitutes acceptance of
- these terms. If you do not agree with these terms, please do
- not use, install, modify or redistribute this Apple software.
- In consideration of your agreement to abide by the following
- terms, and subject to these terms, Apple grants you a personal,
- non-exclusive license, under Apple's copyrights in this
- original Apple software (the "Apple Software"), to use,
- reproduce, modify and redistribute the Apple Software, with or
- without modifications, in source and/or binary forms; provided
- that if you redistribute the Apple Software in its entirety and
- without modifications, you must retain this notice and the
- following text and disclaimers in all such redistributions of
- the Apple Software. Neither the name, trademarks, service marks
- or logos of Apple Inc. may be used to endorse or promote
- products derived from the Apple Software without specific prior
- written permission from Apple. Except as expressly stated in
- this notice, no other rights or licenses, express or implied,
- are granted by Apple herein, including but not limited to any
- patent rights that may be infringed by your derivative works or
- by other works in which the Apple Software may be incorporated.
- The Apple Software is provided by Apple on an "AS IS" basis.
- APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
- WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
- THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
- COMBINATION WITH YOUR PRODUCTS.
- IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT,
- INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY
- OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
- OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY
- OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR
- OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
- SUCH DAMAGE.
- */
- #import "AppDelegate.h"
- #import "InfoController.h"
- @interface AppDelegate ()
- @property (nonatomic, assign) NSInteger networkingCount;
- @end
- @implementation AppDelegate
- + (AppDelegate *)sharedAppDelegate
- {
- return (AppDelegate *) [UIApplication sharedApplication].delegate;
- }
- @synthesize window = _window;
- @synthesize tabs = _tabs;
- @synthesize networkingCount = _networkingCount;
- - (void)applicationDidFinishLaunching:(UIApplication *)application
- {
- #pragma unused(application)
- assert(self.window != nil);
- assert(self.tabs != nil);
-
- [self.window addSubview:self.tabs.view];
-
- self.tabs.selectedIndex = [[NSUserDefaults standardUserDefaults] integerForKey:@"currentTab"];
-
- [self.window makeKeyAndVisible];
- }
- - (void)applicationWillTerminate:(UIApplication *)application
- {
- #pragma unused(application)
- [[NSUserDefaults standardUserDefaults] setInteger:self.tabs.selectedIndex forKey:@"currentTab"];
- }
- - (NSString *)pathForTestImage:(NSUInteger)imageNumber
- // In order to fully test the send and receive code paths, we need some really big
- // files. Rather than carry theshe files around in our binary, we synthesise them.
- // Specifically, for each test image, we expand the image by an order of magnitude,
- // based on its image number. That is, image 1 is not expanded, image 2
- // gets expanded 10 times, and so on. We expand the image by simply copying it
- // to the temporary directory, writing the same data to the file over and over
- // again.
- {
- NSUInteger power;
- NSUInteger expansionFactor;
- NSString * originalFilePath;
- NSString * bigFilePath;
- NSFileManager * fileManager;
- NSDictionary * attrs;
- unsigned long long originalFileSize;
- unsigned long long bigFileSize;
-
- assert( (imageNumber >= 1) && (imageNumber <= 4) );
- // Argh, C has no built-in power operator, so I have to do 10 ** (imageNumber - 1)
- // in floating point and then cast back to integer. Fortunately the range
- // of values is small enough (1..1000) that floating point isn't going
- // to cause me any problems.
-
- // On the simulator we expand by an extra order of magnitude; Macs are fast!
-
- power = imageNumber - 1;
- #if TARGET_IPHONE_SIMULATOR
- power += 1;
- #endif
- expansionFactor = (NSUInteger) pow(10, power);
- fileManager = [NSFileManager defaultManager];
- assert(fileManager != nil);
-
- // Calculate paths to both the original file and the expanded file.
-
- originalFilePath = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"TestImage%zu", (size_t) imageNumber] ofType:@"png"];
- assert(originalFilePath != nil);
-
- bigFilePath = [NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"TestImage%zu.png", (size_t) imageNumber]];
- assert(bigFilePath != nil);
-
- // Get the sizes of each.
-
- attrs = [fileManager attributesOfItemAtPath:originalFilePath error:NULL];
- assert(attrs != nil);
-
- originalFileSize = [[attrs objectForKey:NSFileSize] unsignedLongLongValue];
- attrs = [fileManager attributesOfItemAtPath:bigFilePath error:NULL];
- if (attrs == NULL) {
- bigFileSize = 0;
- } else {
- bigFileSize = [[attrs objectForKey:NSFileSize] unsignedLongLongValue];
- }
-
- // If the expanded file is missing, or the wrong size, create it from scratch.
-
- if (bigFileSize != (originalFileSize * expansionFactor)) {
- NSOutputStream * bigFileStream;
- NSData * data;
- const uint8_t * dataBuffer;
- NSUInteger dataLength;
- NSUInteger dataOffset;
- NSUInteger counter;
- NSLog(@"%5u - %@", (size_t) expansionFactor, bigFilePath);
- data = [NSData dataWithContentsOfMappedFile:originalFilePath];
- assert(data != nil);
-
- dataBuffer = [data bytes];
- dataLength = [data length];
-
- bigFileStream = [NSOutputStream outputStreamToFileAtPath:bigFilePath append:NO];
- assert(bigFileStream != NULL);
-
- [bigFileStream open];
-
- for (counter = 0; counter < expansionFactor; counter++) {
- dataOffset = 0;
- while (dataOffset != dataLength) {
- NSInteger bytesWritten;
-
- bytesWritten = [bigFileStream write:&dataBuffer[dataOffset] maxLength:dataLength - dataOffset];
- assert(bytesWritten > 0);
-
- dataOffset += bytesWritten;
- }
- }
-
- [bigFileStream close];
- }
-
- return bigFilePath;
- }
- - (NSString *)pathForTemporaryFileWithPrefix:(NSString *)prefix
- {
- NSString * result;
- CFUUIDRef uuid;
- CFStringRef uuidStr;
-
- uuid = CFUUIDCreate(NULL);
- assert(uuid != NULL);
-
- uuidStr = CFUUIDCreateString(NULL, uuid);
- assert(uuidStr != NULL);
-
- result = [NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"%@-%@", prefix, uuidStr]];
- assert(result != nil);
-
- CFRelease(uuidStr);
- CFRelease(uuid);
-
- return result;
- }
- - (void)didStartNetworking
- {
- self.networkingCount += 1;
- [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
- }
- - (void)didStopNetworking
- {
- assert(self.networkingCount > 0);
- self.networkingCount -= 1;
- [UIApplication sharedApplication].networkActivityIndicatorVisible = (self.networkingCount != 0);
- }
- @end