space-ios/iOSClient/Library/VFR Pdf Reader/Sources/ReaderContentTile.m

//
//	ReaderContentTile.m
//	Reader v2.8.6
//
//	Created by Julius Oklamcak on 2011-07-01.
//	Copyright © 2011-2015 Julius Oklamcak. All rights reserved.
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal
//	in the Software without restriction, including without limitation the rights to
//	use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
//	of the Software, and to permit persons to whom the Software is furnished to
//	do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in all
//	copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
//	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
//	WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
//	CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

#import "ReaderContentTile.h"

@implementation ReaderContentTile

#pragma mark - Constants

#define LEVELS_OF_DETAIL 16

#pragma mark - ReaderContentTile class methods

+ (CFTimeInterval)fadeDuration
{
	return 0.001; // iOS bug (flickering tiles) workaround
}

#pragma mark - ReaderContentTile instance methods

- (instancetype)init
{
	if ((self = [super init])) // Initialize superclass
	{
		self.levelsOfDetail = LEVELS_OF_DETAIL; // Zoom levels

		self.levelsOfDetailBias = (LEVELS_OF_DETAIL - 1); // Bias

		UIScreen *mainScreen = [UIScreen mainScreen]; // Main screen

		CGFloat screenScale = [mainScreen scale]; // Main screen scale

		CGRect screenBounds = [mainScreen bounds]; // Main screen bounds

		CGFloat w_pixels = (screenBounds.size.width * screenScale);

		CGFloat h_pixels = (screenBounds.size.height * screenScale);

		CGFloat max = ((w_pixels < h_pixels) ? h_pixels : w_pixels);

		CGFloat sizeOfTiles = ((max < 512.0f) ? 512.0f : 1024.0f);

		self.tileSize = CGSizeMake(sizeOfTiles, sizeOfTiles);
	}

	return self;
}

@end