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93 lines
3.1 KiB
Objective-C
93 lines
3.1 KiB
Objective-C
//
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// ScreenView.m
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// Mini vMac
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//
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// Created by Jesús A. Álvarez on 30/04/2016.
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// Copyright © 2016-2018 namedfork. All rights reserved.
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//
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#import "ScreenView.h"
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#import "AppDelegate.h"
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static ScreenView *sharedScreenView = nil;
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@implementation ScreenView
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{
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CGImageRef screenImage;
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CGRect screenBounds;
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CGSize screenSize;
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CALayer *videoLayer;
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}
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- (void)awakeFromNib {
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[super awakeFromNib];
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sharedScreenView = self;
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videoLayer = [CALayer layer];
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NSString *screenFilter = [[NSUserDefaults standardUserDefaults] stringForKey:@"screenFilter"];
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videoLayer.magnificationFilter = screenFilter;
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videoLayer.minificationFilter = screenFilter;
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[self updateVideoLayer];
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[self.layer addSublayer:videoLayer];
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[[AppDelegate sharedInstance] addObserver:self forKeyPath:@"sharedEmulator" options:NSKeyValueObservingOptionNew context:NULL];
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[[NSUserDefaults standardUserDefaults] addObserver:self forKeyPath:@"screenFilter" options:NSKeyValueObservingOptionNew context:NULL];
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}
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+ (instancetype)sharedScreenView {
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return sharedScreenView;
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}
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- (CGRect)screenBounds {
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return screenBounds;
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}
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- (CGSize)screenSize {
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return screenSize;
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}
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- (void)updateVideoLayer {
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videoLayer.contents = nil;
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if ([AppDelegate sharedEmulator]) {
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[AppDelegate sharedEmulator].screenLayer = videoLayer;
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screenSize = [AppDelegate sharedEmulator].screenSize;
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} else {
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screenSize = CGSizeMake(1, 1);
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}
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}
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- (void)layoutSubviews {
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[super layoutSubviews];
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CGRect viewBounds = self.bounds;
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CGFloat screenScale = MAX(screenSize.width / viewBounds.size.width, screenSize.height / viewBounds.size.height);
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if (screenScale > 0.9 && screenScale <= 1.0) {
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screenScale = 1.0;
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}
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screenBounds = CGRectMake(0, 0, screenSize.width / screenScale, screenSize.height / screenScale);
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screenBounds.origin.x = (viewBounds.size.width - screenBounds.size.width)/2;
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screenBounds = CGRectIntegral(screenBounds);
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videoLayer.frame = screenBounds;
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screenBounds.origin.y = self.frame.origin.y;
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BOOL scaleIsIntegral = (floor(screenScale) == screenScale);
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NSString *screenFilter = scaleIsIntegral ? kCAFilterNearest : [[NSUserDefaults standardUserDefaults] stringForKey:@"screenFilter"];
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videoLayer.magnificationFilter = screenFilter;
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videoLayer.minificationFilter = screenFilter;
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}
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- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
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if ([object isEqual:[NSUserDefaults standardUserDefaults]]) {
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if ([keyPath isEqualToString:@"screenFilter"]) {
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NSString *value = change[NSKeyValueChangeNewKey];
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videoLayer.magnificationFilter = value;
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videoLayer.minificationFilter = value;
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}
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} else if (object == [AppDelegate sharedInstance] && [keyPath isEqualToString:@"sharedEmulator"]) {
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[self updateVideoLayer];
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[self layoutSubviews];
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}
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}
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- (void)dealloc {
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[[NSUserDefaults standardUserDefaults] removeObserver:self forKeyPath:@"screenFilter" context:NULL];
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}
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@end
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