278 lines
10 KiB
Objective-C
278 lines
10 KiB
Objective-C
//
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// KBKeyboardView.m
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// BasiliskII
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//
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// Created by Jesús A. Álvarez on 22/03/2014.
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// Copyright (c) 2014-2018 namedfork. All rights reserved.
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//
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#import "KBKeyboardView.h"
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#import "KBKey.h"
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@implementation KBKeyboardView {
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NSMutableArray *keyPlanes, *emptyKeyPlanes;
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NSMutableSet *modifiers;
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NSMutableIndexSet *keysDown;
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CGAffineTransform defaultKeyTransform;
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CGFloat fontSize;
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CGSize selectedSize;
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UIEdgeInsets safeAreaInsets;
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CGSize intrinsicSize;
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}
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- (instancetype)initWithFrame:(CGRect)frame safeAreaInsets:(UIEdgeInsets)insets {
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self = [super initWithFrame:frame];
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if (self) {
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safeAreaInsets = insets;
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intrinsicSize = frame.size;
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#if !defined(TARGET_OS_VISION) || TARGET_OS_VISION == 0
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if (@available(iOS 13.0, *)) {
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self.backgroundColor = [UIColor clearColor];
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UIVisualEffectView *backgroundView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleSystemThickMaterial]];
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backgroundView.frame = self.bounds;
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[self addSubview: backgroundView];
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} else {
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self.backgroundColor = [UIColor colorWithRed:0xEB / 255.0 green:0xF0 / 255.0 blue:0xF7 / 255.0 alpha:0.9];
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}
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#endif
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modifiers = [NSMutableSet setWithCapacity:4];
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keysDown = [NSMutableIndexSet indexSet];
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self.autoresizesSubviews = NO;
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}
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return self;
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}
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- (instancetype)initWithFrame:(CGRect)frame {
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return [self initWithFrame:frame safeAreaInsets:UIEdgeInsetsZero];
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}
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- (CGSize)intrinsicContentSize {
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return intrinsicSize;
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}
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- (BOOL)isCompactKeyboardSize:(CGSize)size {
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return size.width < 768.0;
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}
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#if defined(TARGET_OS_VISION) && TARGET_OS_VISION == 1
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- (void)layoutSubviews {
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// TODO: optimize this if needed
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CGSize size = self.bounds.size;
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CGFloat scale = size.width / intrinsicSize.width;
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CGAffineTransform transform = CGAffineTransformMakeScale(scale, scale);
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if (!CGAffineTransformEqualToTransform(transform, defaultKeyTransform)) {
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defaultKeyTransform = transform;
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keyPlanes = emptyKeyPlanes.mutableCopy;
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fontSize = 30.0 * scale;
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[self switchToKeyPlane:0];
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}
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}
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#endif
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- (CGSize)findBestSizeForWidth:(CGFloat)preferredWidth inArray:(NSArray<NSValue*>*)sizes {
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CGSize selectedSize = CGSizeZero;
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for (NSValue *key in sizes) {
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CGSize size = key.CGSizeValue;
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if (size.width > selectedSize.width && size.width <= preferredWidth) {
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selectedSize = size;
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if (size.width == preferredWidth) {
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// exact match
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break;
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}
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}
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}
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// still not found, use smallest width
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if (CGSizeEqualToSize(selectedSize, CGSizeZero)) {
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selectedSize = sizes.firstObject.CGSizeValue;
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}
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return selectedSize;
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}
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- (void)setLayout:(KBKeyboardLayout *)layout {
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if ([_layout isEqual:layout]) {
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return;
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}
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_layout = layout;
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// find preferred size (same width or smaller)
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CGRect safeFrame = UIEdgeInsetsInsetRect(self.frame, safeAreaInsets);
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CGFloat frameWidth = safeFrame.size.width;
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CGFloat preferredWidth = frameWidth;
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// find best size in class
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BOOL isCompactSize = self.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact;
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NSArray<NSValue*> *sizes = [[layout.availableSizes filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(NSValue *size, NSDictionary<NSString *,id> * _Nullable bindings) {
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return [self isCompactKeyboardSize:size.CGSizeValue] == isCompactSize;
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}]] sortedArrayUsingComparator:^NSComparisonResult(NSValue * _Nonnull size1, NSValue * _Nonnull size2) {
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return size1.CGSizeValue.width - size2.CGSizeValue.width;
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}];
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selectedSize = [self findBestSizeForWidth:preferredWidth inArray:sizes];
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defaultKeyTransform = CGAffineTransformIdentity;
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fontSize = [self isCompactKeyboardSize:selectedSize] ? 22.0 : 30.0;
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if (preferredWidth != selectedSize.width || preferredWidth != frameWidth) {
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// adjust width
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if (frameWidth / selectedSize.width > 2 || frameWidth / selectedSize.width < 0.5) {
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// iphone keyboard on ipad?
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defaultKeyTransform = CGAffineTransformMakeScale(frameWidth / selectedSize.width, frameWidth / selectedSize.width);
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} else if (frameWidth < selectedSize.width) {
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// shrink keyboard
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defaultKeyTransform = CGAffineTransformMakeScale(frameWidth / selectedSize.width, 1.0);
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} else {
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// iPhone keyboard on bigger phone
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CGFloat wScale = safeFrame.size.width / selectedSize.width;
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defaultKeyTransform = CGAffineTransformMakeScale(wScale, 1.0);
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}
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}
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self.frame = CGRectMake(0, 0, safeFrame.size.width + safeAreaInsets.right + safeAreaInsets.left, selectedSize.height * defaultKeyTransform.d + safeAreaInsets.bottom);
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// init keyplanes array
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NSUInteger numberOfKeyPlanes = layout.numberOfKeyPlanes;
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keyPlanes = [NSMutableArray arrayWithCapacity:numberOfKeyPlanes];
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for (int i = 0; i < numberOfKeyPlanes; i++) {
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[keyPlanes addObject:[NSNull null]];
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}
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emptyKeyPlanes = keyPlanes.mutableCopy;
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[self switchToKeyPlane:0];
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}
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- (void)_addKeyWithFrame:(CGRect)keyFrame scanCode:(int8_t)scancode fontScale:(CGFloat)fontScale dark:(BOOL)dark sticky:(BOOL)sticky toKeyPlane:(NSMutableArray*)keyPlane {
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KBKey *key = nil;
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if (@available(iOS 11, *)) {
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keyFrame.origin.x += safeAreaInsets.left;
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}
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if (scancode == VKC_HIDE) {
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key = [[KBHideKey alloc] initWithFrame:keyFrame];
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#if defined(TARGET_OS_VISION) && TARGET_OS_VISION == 1
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if (self.layoutMenu != nil) {
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key.showsMenuAsPrimaryAction = YES;
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key.menu = self.layoutMenu;
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} else {
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return;
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}
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#else
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[key addTarget:self action:@selector(hideKeyboard:) forControlEvents:UIControlEventTouchUpInside];
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#endif
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} else if (scancode == VKC_SHIFT_CAPS) {
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key = [[KBShiftCapsKey alloc] initWithFrame:keyFrame];
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key.scancode = KC_SHIFT;
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[key addTarget:self action:@selector(capsKey:) forControlEvents:KBKeyEventStickyKey];
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} else if (sticky) {
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key = [[KBStickyKey alloc] initWithFrame:keyFrame];
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key.scancode = scancode;
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[key addTarget:self action:@selector(stickyKey:) forControlEvents:KBKeyEventStickyKey];
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} else {
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key = [[KBKey alloc] initWithFrame:keyFrame];
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key.scancode = scancode;
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[key addTarget:self action:@selector(keyDown:) forControlEvents:UIControlEventTouchDown];
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[key addTarget:self action:@selector(keyUp:) forControlEvents:UIControlEventTouchUpInside | UIControlEventTouchDragExit | UIControlEventTouchCancel];
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}
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key.dark = dark;
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NSString *label = [_layout labelForScanCode:scancode];
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if ([label containsString:@"\n"]) {
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fontScale *= [self isCompactKeyboardSize:selectedSize] ? 0.6 : 0.65;
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}
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key.label = label;
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key.titleLabel.font = [UIFont systemFontOfSize:self->fontSize * fontScale weight:UIFontWeightRegular];
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[keyPlane addObject:key];
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}
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- (NSArray *)_loadKeyPlane:(NSUInteger)plane {
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NSMutableArray *keyPlane = [NSMutableArray arrayWithCapacity:64];
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[_layout enumerateKeysForSize:selectedSize plane:plane transform:defaultKeyTransform usingBlock:^(int8_t scancode, CGRect keyFrame, CGFloat fontScale, BOOL dark, BOOL sticky) {
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[self _addKeyWithFrame:keyFrame scanCode:scancode fontScale:fontScale dark:dark sticky:sticky toKeyPlane:keyPlane];
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}];
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return keyPlane;
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}
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- (NSArray<KBKey *> *)keys {
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return [self.subviews filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self isKindOfClass: %@", [KBKey class]]];
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}
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- (NSArray<KBKey *> *)stickyKeys {
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return [self.subviews filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self isKindOfClass: %@", [KBStickyKey class]]];
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}
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- (void)switchToKeyPlane:(NSInteger)idx {
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if (idx < 0 || idx >= keyPlanes.count) {
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return;
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}
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// remove previous keys
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[self.keys makeObjectsPerformSelector:@selector(removeFromSuperview)];
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// load keyplane
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if (keyPlanes[idx] == [NSNull null]) {
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keyPlanes[idx] = [self _loadKeyPlane:idx];
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}
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// add keys
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for (KBKey *key in keyPlanes[idx]) {
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if ([key isKindOfClass:[KBStickyKey class]]) {
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// match modifiers
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KBStickyKey *stickyKey = (KBStickyKey *)key;
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stickyKey.down = [keysDown containsIndex:key.scancode];
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if ([key isKindOfClass:[KBShiftCapsKey class]]) {
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KBShiftCapsKey *shiftCapsKey = (KBShiftCapsKey *)key;
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shiftCapsKey.capsLocked = [keysDown containsIndex:KC_CAPSLOCK];
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}
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}
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[self addSubview:key];
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}
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}
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- (void)keyDown:(KBKey *)key {
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int16_t scancode = key.scancode;
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if (scancode >= 0 && ![keysDown containsIndex:scancode]) {
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[keysDown addIndex:scancode];
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[self.delegate keyDown:scancode];
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} else if (scancode < 0) {
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[self switchToKeyPlane:(-scancode) - 1];
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}
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}
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- (void)keyUp:(KBKey *)key {
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int16_t scancode = key.scancode;
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if (scancode >= 0 && [keysDown containsIndex:scancode]) {
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[keysDown removeIndex:scancode];
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[self.delegate keyUp:scancode];
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// up sticky keys
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[self.stickyKeys setValue:@NO forKey:@"down"];
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}
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}
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- (void)hideKeyboard:(KBHideKey *)key {
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if ([self.delegate respondsToSelector:@selector(hideKeyboard:)]) {
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[self.delegate hideKeyboard:key];
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} else {
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self.hidden = YES;
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}
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}
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- (void)stickyKey:(KBStickyKey *)key {
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if (key.down && ![keysDown containsIndex:key.scancode]) {
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[keysDown addIndex:key.scancode];
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[self.delegate keyDown:key.scancode];
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} else if (!key.down && [keysDown containsIndex:key.scancode]) {
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[keysDown removeIndex:key.scancode];
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[self.delegate keyUp:key.scancode];
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}
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}
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- (void)capsKey:(KBShiftCapsKey *)key {
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if (key.capsLocked && ![keysDown containsIndex:KC_CAPSLOCK]) {
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[keysDown addIndex:KC_CAPSLOCK];
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[self.delegate keyDown:KC_CAPSLOCK];
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} else if ([keysDown containsIndex:KC_CAPSLOCK]) {
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[keysDown removeIndex:KC_CAPSLOCK];
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[self.delegate keyUp:KC_CAPSLOCK];
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} else {
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[self stickyKey:key];
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}
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}
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@end
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