minivmac4ios/Mini vMac/KBKeyboardView.m

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//
// KBKeyboardView.m
// BasiliskII
//
// 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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//
#import "KBKeyboardView.h"
#import "KBKey.h"
#define KC_COMMAND 55
#define KC_SHIFT 56
#define KC_CAPSLOCK 57
#define KC_OPTION 58
#define KC_CONTROL 59
@implementation KBKeyboardView {
NSMutableArray *keyPlanes;
NSMutableSet *modifiers;
NSMutableIndexSet *keysDown;
CGAffineTransform defaultKeyTransform;
CGFloat fontSize;
CGSize selectedSize;
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UIEdgeInsets safeAreaInsets;
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}
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- (instancetype)initWithFrame:(CGRect)frame safeAreaInsets:(UIEdgeInsets)insets {
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self = [super initWithFrame:frame];
if (self) {
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safeAreaInsets = insets;
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if (@available(iOS 13.0, *)) {
self.backgroundColor = [UIColor clearColor];
UIVisualEffectView *backgroundView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleSystemThickMaterial]];
backgroundView.frame = self.bounds;
[self addSubview: backgroundView];
} else {
self.backgroundColor = [UIColor colorWithRed:0xEB / 255.0 green:0xF0 / 255.0 blue:0xF7 / 255.0 alpha:0.9];
}
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modifiers = [NSMutableSet setWithCapacity:4];
keysDown = [NSMutableIndexSet indexSet];
}
return self;
}
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- (instancetype)initWithFrame:(CGRect)frame {
return [self initWithFrame:frame safeAreaInsets:UIEdgeInsetsZero];
}
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- (BOOL)isCompactKeyboardSize:(CGSize)size {
return size.width < 768.0;
}
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- (CGSize)findBestSizeForWidth:(CGFloat)preferredWidth inArray:(NSArray<NSValue*>*)sizes {
CGSize selectedSize = CGSizeZero;
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) {
// exact match
break;
}
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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;
}
- (void)setLayout:(KBKeyboardLayout *)layout {
if ([_layout isEqual:layout]) {
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return;
}
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_layout = layout;
// find preferred size (same width or smaller)
CGRect safeFrame = UIEdgeInsetsInsetRect(self.frame, safeAreaInsets);
CGFloat frameWidth = safeFrame.size.width;
CGFloat preferredWidth = frameWidth;
// find best size in class
BOOL isCompactSize = self.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact;
NSArray<NSValue*> *sizes = [[layout.availableSizes filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(NSValue *size, NSDictionary<NSString *,id> * _Nullable bindings) {
return [self isCompactKeyboardSize:size.CGSizeValue] == isCompactSize;
}]] sortedArrayUsingComparator:^NSComparisonResult(NSValue * _Nonnull size1, NSValue * _Nonnull size2) {
return size1.CGSizeValue.width - size2.CGSizeValue.width;
}];
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) {
// adjust width
if (frameWidth / selectedSize.width > 2 || frameWidth / selectedSize.width < 0.5) {
// iphone keyboard on ipad?
defaultKeyTransform = CGAffineTransformMakeScale(frameWidth / selectedSize.width, frameWidth / selectedSize.width);
} else if (frameWidth < selectedSize.width) {
// shrink keyboard
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defaultKeyTransform = CGAffineTransformMakeScale(frameWidth / selectedSize.width, 1.0);
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} else {
// 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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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
NSUInteger numberOfKeyPlanes = layout.numberOfKeyPlanes;
keyPlanes = [NSMutableArray arrayWithCapacity:numberOfKeyPlanes];
for (int i = 0; i < numberOfKeyPlanes; i++) {
[keyPlanes addObject:[NSNull null]];
}
[self switchToKeyPlane:0];
}
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- (void)_addKeyWithFrame:(CGRect)keyFrame scanCode:(int8_t)scancode fontScale:(CGFloat)fontScale dark:(BOOL)dark sticky:(BOOL)sticky toKeyPlane:(NSMutableArray*)keyPlane {
KBKey *key = nil;
if (@available(iOS 11, *)) {
keyFrame.origin.x += safeAreaInsets.left;
}
if (scancode == VKC_HIDE) {
key = [[KBHideKey alloc] initWithFrame:keyFrame];
[key addTarget:self action:@selector(hideKeyboard:) forControlEvents:UIControlEventTouchUpInside];
} else if (scancode == VKC_SHIFT_CAPS) {
key = [[KBShiftCapsKey alloc] initWithFrame:keyFrame];
key.scancode = KC_SHIFT;
[key addTarget:self action:@selector(capsKey:) forControlEvents:KBKeyEventStickyKey];
} else if (sticky) {
key = [[KBStickyKey alloc] initWithFrame:keyFrame];
key.scancode = scancode;
[key addTarget:self action:@selector(stickyKey:) forControlEvents:KBKeyEventStickyKey];
} else {
key = [[KBKey alloc] initWithFrame:keyFrame];
key.scancode = scancode;
[key addTarget:self action:@selector(keyDown:) forControlEvents:UIControlEventTouchDown];
[key addTarget:self action:@selector(keyUp:) forControlEvents:UIControlEventTouchUpInside | UIControlEventTouchDragExit | UIControlEventTouchCancel];
}
key.dark = dark;
NSString *label = [_layout labelForScanCode:scancode];
if ([label containsString:@"\n"]) {
fontScale *= [self isCompactKeyboardSize:selectedSize] ? 0.6 : 0.65;
}
key.label = label;
key.titleLabel.font = [UIFont systemFontOfSize:self->fontSize * fontScale weight:UIFontWeightRegular];
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[keyPlane addObject:key];
}
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- (NSArray *)_loadKeyPlane:(NSUInteger)plane {
NSMutableArray *keyPlane = [NSMutableArray arrayWithCapacity:64];
[_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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}];
return keyPlane;
}
- (NSArray<KBKey *> *)keys {
return [self.subviews filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self isKindOfClass: %@", [KBKey class]]];
}
- (NSArray<KBKey *> *)stickyKeys {
return [self.subviews filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self isKindOfClass: %@", [KBStickyKey class]]];
}
- (void)switchToKeyPlane:(NSInteger)idx {
if (idx < 0 || idx >= keyPlanes.count) {
return;
}
// remove previous keys
[self.keys makeObjectsPerformSelector:@selector(removeFromSuperview)];
// load keyplane
if (keyPlanes[idx] == [NSNull null]) {
keyPlanes[idx] = [self _loadKeyPlane:idx];
}
// add keys
for (KBKey *key in keyPlanes[idx]) {
if ([key isKindOfClass:[KBStickyKey class]]) {
// match modifiers
KBStickyKey *stickyKey = (KBStickyKey *)key;
stickyKey.down = [keysDown containsIndex:key.scancode];
if ([key isKindOfClass:[KBShiftCapsKey class]]) {
KBShiftCapsKey *shiftCapsKey = (KBShiftCapsKey *)key;
shiftCapsKey.capsLocked = [keysDown containsIndex:KC_CAPSLOCK];
}
}
[self addSubview:key];
}
}
- (void)keyDown:(KBKey *)key {
int16_t scancode = key.scancode;
if (scancode >= 0 && ![keysDown containsIndex:scancode]) {
[keysDown addIndex:scancode];
[self.delegate keyDown:scancode];
} else if (scancode < 0) {
[self switchToKeyPlane:(-scancode) - 1];
}
}
- (void)keyUp:(KBKey *)key {
int16_t scancode = key.scancode;
if (scancode >= 0 && [keysDown containsIndex:scancode]) {
[keysDown removeIndex:scancode];
[self.delegate keyUp:scancode];
// up sticky keys
[self.stickyKeys setValue:@NO forKey:@"down"];
}
}
- (void)hideKeyboard:(KBHideKey *)key {
if ([self.delegate respondsToSelector:@selector(hideKeyboard:)]) {
[self.delegate hideKeyboard:key];
} else {
self.hidden = YES;
}
}
- (void)stickyKey:(KBStickyKey *)key {
if (key.down && ![keysDown containsIndex:key.scancode]) {
[keysDown addIndex:key.scancode];
[self.delegate keyDown:key.scancode];
} else if (!key.down && [keysDown containsIndex:key.scancode]) {
[keysDown removeIndex:key.scancode];
[self.delegate keyUp:key.scancode];
}
}
- (void)capsKey:(KBShiftCapsKey *)key {
if (key.capsLocked && ![keysDown containsIndex:KC_CAPSLOCK]) {
[keysDown addIndex:KC_CAPSLOCK];
[self.delegate keyDown:KC_CAPSLOCK];
} else if ([keysDown containsIndex:KC_CAPSLOCK]) {
[keysDown removeIndex:KC_CAPSLOCK];
[self.delegate keyUp:KC_CAPSLOCK];
} else {
[self stickyKey:key];
}
}
@end