minivmac4ios/Mini vMac/KBKeyboardLayout.m

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2016-05-14 11:01:02 +00:00
//
// KBKeyboardLayout.m
// BasiliskII
//
// Created by Jesús A. Álvarez on 09/04/2016.
// Copyright © 2016 namedfork. All rights reserved.
//
#import "KBKeyboardLayout.h"
#if defined(CGFLOAT_IS_DOUBLE) && CGFLOAT_IS_DOUBLE
#define CGFloatValue doubleValue
#else
#define CGFloatValue floatValue
#endif
@interface KBKeyDescriptor : NSObject
{
@public
CGRect frame;
CGFloat fontScale;
int8_t scancode;
BOOL dark, sticky;
}
@end
@interface KBKeyboardLayoutBinaryReader : NSObject
{
NSData *data;
const void *ptr;
}
@property (nonatomic, assign) NSUInteger position;
+ (BOOL)validBinaryHeader:(NSData*)data;
- (instancetype)initWithData:(NSData*)layoutData;
- (NSString*)readString;
- (uint8_t)readUInt8;
- (int8_t)readInt8;
- (uint16_t)readUInt16;
- (int16_t)readInt16;
- (uint32_t)readUInt32;
- (CGFloat)readFloat;
- (CGRect)readFrameOfSize:(NSUInteger)size withLastFrame:(CGRect)lastFrame;
- (NSArray<NSString*>*)readStrings:(NSUInteger)count emptyStringMarker:(id)emptyStringMarker;
@end
typedef NSArray<KBKeyDescriptor*> KBKeyPlane;
typedef NSMutableArray<KBKeyDescriptor*> KBMutableKeyPlane;
typedef NSArray<KBKeyPlane*> KBKeyMap;
typedef NSMutableArray<KBKeyPlane*> KBMutableKeyMap;
@implementation KBKeyboardLayout
{
NSMutableDictionary<NSNumber*,NSString*> *labels;
NSArray<NSString*> *keyPlaneLabels;
NSMutableDictionary<NSValue*, KBKeyMap*> *keyMaps;
}
- (instancetype)initWithContentsOfFile:(NSString *)path {
NSData *layoutData = [NSData dataWithContentsOfFile:path];
if ([KBKeyboardLayoutBinaryReader validBinaryHeader:layoutData]) {
return [self initWithBinaryRepresentation:layoutData];
} else if (layoutData.length > 1 && memcmp(layoutData.bytes, "{", 1) == 0) {
// possibly JSON
NSError *err = nil;
NSDictionary *layoutDictionary = [NSJSONSerialization JSONObjectWithData:layoutData options:0 error:&err];
return [self initWithDictionaryRepresentation:layoutDictionary];
}
return nil;
}
- (NSUInteger)numberOfKeyPlanes {
return keyPlaneLabels.count;
}
- (NSArray<NSValue *> *)availableSizes {
return keyMaps.allKeys;
}
- (NSString *)labelForScanCode:(NSInteger)scanCode {
if (scanCode == VKC_HIDE) {
return @"@KBHide";
} else if (scanCode < 0 && -scanCode <= keyPlaneLabels.count) {
// switch keyplane
return keyPlaneLabels[-scanCode-1];
}
return labels[@(scanCode)];
}
- (BOOL)enumerateKeysForSize:(CGSize)size plane:(NSUInteger)plane transform:(CGAffineTransform)transform usingBlock:(void (^)(int8_t, CGRect, CGFloat, BOOL, BOOL))block {
NSValue *sizeValue = [NSValue valueWithCGSize:size];
KBKeyPlane *keyPlane = keyMaps[sizeValue][plane];
for (KBKeyDescriptor *keyDescriptor in keyPlane) {
block(keyDescriptor->scancode, CGRectApplyAffineTransform(keyDescriptor->frame, transform), keyDescriptor->fontScale, keyDescriptor->dark, keyDescriptor->sticky);
}
return keyPlane != nil;
}
#pragma mark - Binary Reading
- (instancetype)initWithBinaryRepresentation:(NSData *)layoutData {
if (![KBKeyboardLayoutBinaryReader validBinaryHeader:layoutData]) {
return nil;
}
if ((self = [super init])) {
KBKeyboardLayoutBinaryReader *reader = [[KBKeyboardLayoutBinaryReader alloc] initWithData:layoutData];
// read header
_identifier = [reader readString];
_name = [reader readString];
_type = [reader readUInt8];
// read 128 labels
labels = [NSMutableDictionary dictionaryWithCapacity:128];
for (int scancode=0; scancode < 128; scancode++) {
NSString *label = [reader readString];
if (label != nil) {
labels[@(scancode)] = label;
}
}
// read keyplane names
NSUInteger numberOfKeyPlanes = [reader readUInt8];
keyPlaneLabels = [reader readStrings:numberOfKeyPlanes emptyStringMarker:@""];
// read map index
NSUInteger numberOfMaps = [reader readUInt8];
NSMutableDictionary<NSNumber*,NSNumber*> *mapIndex = [NSMutableDictionary dictionaryWithCapacity:numberOfMaps];
NSMutableArray<NSNumber*> *mapIDs = [NSMutableArray arrayWithCapacity:numberOfMaps];
for (NSUInteger i=0; i < numberOfMaps; i++) {
uint32_t mapID = [reader readUInt32];
uint16_t mapOffset = [reader readUInt16];
mapIndex[@(mapID)] = @(mapOffset);
[mapIDs addObject:@(mapID)];
}
// read maps
keyMaps = [NSMutableDictionary dictionaryWithCapacity:numberOfMaps];
NSMutableDictionary<NSNumber*,KBKeyMap*> *mapsByID = [NSMutableDictionary dictionaryWithCapacity:numberOfMaps];
for (NSNumber *mapID in mapIDs) {
CGSize mapSize = CGSizeMake((mapID.integerValue >> 16), (mapID.integerValue & 0x7FFF));
reader.position = mapIndex[mapID].integerValue;
// read keyplanes
KBMutableKeyMap *keyMap = [KBMutableKeyMap arrayWithCapacity:numberOfKeyPlanes];
for (NSUInteger planeNumber = 0; planeNumber < numberOfKeyPlanes; planeNumber++) {
NSUInteger numberOfKeys = [reader readUInt8];
if (numberOfKeys == 0) {
[keyMap addObject:@[]];
continue;
}
// read keys
KBMutableKeyPlane *keyPlane = [KBMutableKeyPlane arrayWithCapacity:numberOfKeys];
CGRect lastFrame = CGRectZero;
for (NSUInteger keyNumber = 0; keyNumber < numberOfKeys; keyNumber++) {
uint8_t flags = [reader readUInt8];
if ((flags & 0xC0) == 0x00) {
// key
KBKeyDescriptor *key = [KBKeyDescriptor new];
key->dark = (flags & 0x20) == 0x20;
key->sticky = (flags & 0x10) == 0x10;
key->fontScale = (((flags & 0x0C) >> 2) + 1) * 0.25;
key->scancode = [reader readInt8];
key->frame = [reader readFrameOfSize:(flags & 0x03) + 1 withLastFrame:lastFrame];
lastFrame = key->frame;
[keyPlane addObject:key];
} else if ((flags & 0xC0) == 0x40) {
// include
NSUInteger includePlaneNumber = flags & 0x0F;
uint32_t includeMapNumber = [reader readUInt32];
CGAffineTransform includeTransform = CGAffineTransformIdentity;
if ((flags & 0x20) == 0x20) {
CGFloat scaleX = [reader readFloat];
CGFloat scaleY = [reader readFloat];
includeTransform = CGAffineTransformScale(includeTransform, scaleX, scaleY);
}
if ((flags & 0x10) == 0x10) {
CGFloat translateX = [reader readInt16];
CGFloat translateY = [reader readInt16];
includeTransform = CGAffineTransformTranslate(includeTransform, translateX, translateY);
}
NSUInteger numberOfSkips = [reader readUInt8];
NSMutableSet<NSNumber*> *skipKeys = [NSMutableSet setWithCapacity:numberOfSkips];
for (NSUInteger i=0; i < numberOfSkips; i++) {
[skipKeys addObject:@([reader readInt8])];
}
KBKeyMap *includeKeyMap = mapsByID[@(includeMapNumber)];
if (includeKeyMap.count < includePlaneNumber) {
continue;
}
KBKeyPlane *includeKeyPlane = includeKeyMap[includePlaneNumber];
[includeKeyPlane enumerateObjectsUsingBlock:^(KBKeyDescriptor * _Nonnull oldKey, NSUInteger idx, BOOL * _Nonnull stop) {
if ([skipKeys containsObject:@(oldKey->scancode)]) {
return;
}
KBKeyDescriptor *key = [KBKeyDescriptor new];
key->dark = oldKey->dark;
key->sticky = oldKey->sticky;
key->frame = CGRectIntegral(CGRectApplyAffineTransform(oldKey->frame, includeTransform));
key->fontScale = oldKey->fontScale;
key->scancode = oldKey->scancode;
[keyPlane addObject:key];
}];
}
}
[keyMap addObject:keyPlane];
}
mapsByID[mapID] = keyMap;
if ((mapID.integerValue & 0x7FFF0000) != 0) {
// valid size
keyMaps[[NSValue valueWithCGSize:mapSize]] = keyMap;
}
}
}
return self;
}
#pragma mark - Dictionary Reading
- (instancetype)initWithDictionaryRepresentation:(NSDictionary *)layoutDictionary {
if ((self = [super init])) {
_identifier = layoutDictionary[@"id"];
_name = layoutDictionary[@"name"];
_type = (uint8_t)[layoutDictionary[@"adbType"] integerValue];
// read labels
NSDictionary<NSString*,NSString*> *layoutLabels = layoutDictionary[@"labels"];
labels = [NSMutableDictionary dictionaryWithCapacity:100];
[layoutLabels enumerateKeysAndObjectsUsingBlock:^(NSString * _Nonnull key, NSString * _Nonnull obj, BOOL * _Nonnull stop) {
if (key.integerValue != 0 || [key isEqualToString:@"0"]) {
labels[@(key.integerValue)] = obj;
}
}];
// get keyplane labels
NSArray *keyPlaneIDs = [[labels.allKeys filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(id _Nonnull evaluatedObject, NSDictionary<NSString *,id> * _Nullable bindings) {
return [evaluatedObject integerValue] < 0;
}]] sortedArrayUsingDescriptors:@[[NSSortDescriptor sortDescriptorWithKey:@"self" ascending:NO]]];
keyPlaneLabels = [labels objectsForKeys:keyPlaneIDs notFoundMarker:@""];
[labels removeObjectsForKeys:keyPlaneIDs];
// read sizes
NSMutableArray *sizes = [layoutDictionary.allKeys filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(id _Nonnull evaluatedObject, NSDictionary<NSString *,id> * _Nullable bindings) {
CGSize size = CGSizeFromString(evaluatedObject);
return !CGSizeEqualToSize(size, CGSizeZero);
}]].mutableCopy;
NSMutableDictionary<NSValue*,NSString*> *sizeToKey = [NSMutableDictionary dictionaryWithCapacity:sizes.count];
for(NSUInteger i=0; i < sizes.count; i++) {
CGSize size = CGSizeFromString(sizes[i]);
NSValue *sizeValue = [NSValue valueWithCGSize:size];
sizeToKey[sizeValue] = sizes[i];
sizes[i] = sizeValue;
}
// read layouts
keyMaps = [NSMutableDictionary dictionaryWithCapacity:sizes.count];
for (NSValue *sizeValue in sizes) {
KBMutableKeyMap *keyMap = [NSMutableArray arrayWithCapacity:self.numberOfKeyPlanes];
for (NSArray *keyPlane in layoutDictionary[sizeToKey[sizeValue]]) {
[keyMap addObject:[self _loadKeys:keyPlane fromDictionary:layoutDictionary withTransform:CGAffineTransformIdentity skip:nil]];
}
keyMaps[sizeValue] = keyMap;
}
}
return self;
}
- (KBKeyPlane*)_loadKeys:(NSArray *)keys fromDictionary:(NSDictionary*)layoutDictionary withTransform:(CGAffineTransform)keyTransform skip:(NSSet*)skipKeys {
NSMutableArray *keyPlane = [NSMutableArray arrayWithCapacity:keys.count];
CGRect frame = CGRectZero;
for (NSDictionary *keyDict in keys) {
// include
NSArray *includeArgs = keyDict[@"include"];
if ([includeArgs isKindOfClass:[NSArray class]] && includeArgs.count >= 2) {
CGAffineTransform includeTransform = keyTransform;
NSArray<NSNumber*> *scaleArgs = keyDict[@"scale"];
if ([scaleArgs isKindOfClass:[NSArray class]] && scaleArgs.count == 2) {
includeTransform = CGAffineTransformScale(includeTransform, scaleArgs[0].CGFloatValue, scaleArgs[1].CGFloatValue);
}
NSArray<NSNumber*> *translateArgs = keyDict[@"translate"];
if ([translateArgs isKindOfClass:[NSArray class]] && translateArgs.count == 2) {
includeTransform = CGAffineTransformTranslate(includeTransform, translateArgs[0].CGFloatValue, translateArgs[1].CGFloatValue);
}
NSArray *skipArgs = keyDict[@"skip"];
NSString *layoutKey = includeArgs[0];
NSNumber *planeNumber = includeArgs[1];
NSArray *addKeys = [self _loadKeys:layoutDictionary[layoutKey][planeNumber.integerValue] fromDictionary:layoutDictionary withTransform:includeTransform skip:skipArgs ? [NSSet setWithArray:skipArgs] : nil];
[keyPlane addObjectsFromArray:addKeys];
}
// frame
NSArray *kvFrame = keyDict[@"frame"];
frame.origin.x = [kvFrame[0] CGFloatValue];
if (kvFrame.count > 1 && kvFrame[1] != [NSNull null]) {
frame.origin.y = [kvFrame[1] CGFloatValue];
}
if (kvFrame.count > 2 && kvFrame[2] != [NSNull null]) {
frame.size.width = [kvFrame[2] CGFloatValue];
}
if (kvFrame.count > 3 && kvFrame[3] != [NSNull null]) {
frame.size.height = [kvFrame[3] CGFloatValue];
}
// key
id scancode = keyDict[@"key"];
if ([skipKeys containsObject:scancode]) {
continue;
}
KBKeyDescriptor *kd = [KBKeyDescriptor new];
if ([scancode isEqual:@"hide"]) {
kd->scancode = VKC_HIDE;
} else if ([scancode isEqual:@"shift/caps"]) {
kd->scancode = VKC_SHIFT_CAPS;
} else {
kd->scancode = (int8_t)[scancode integerValue];
}
kd->sticky = [keyDict[@"sticky"] boolValue];
kd->dark = [keyDict[@"dark"] boolValue];
kd->frame = CGRectIntegral(CGRectApplyAffineTransform(frame, keyTransform));
kd->fontScale = keyDict[@"fontScale"] ? [keyDict[@"fontScale"] CGFloatValue] : 1.0;
[keyPlane addObject:kd];
}
return keyPlane;
}
@end
@implementation KBKeyDescriptor
@end
@implementation KBKeyboardLayoutBinaryReader
- (instancetype)initWithData:(NSData *)layoutData {
if ((self = [super init])) {
data = layoutData;
ptr = data.bytes + 12;
}
return self;
}
+ (BOOL)validBinaryHeader:(NSData*)data {
return data.length > 12 && memcmp(data.bytes, "NFKeyboard\x01\x00", 12) == 0;
}
- (void)_checkReadableBytes:(NSUInteger)size {
if (ptr + size > data.bytes + data.length) {
@throw [NSException exceptionWithName:NSRangeException reason:nil userInfo:@{@"pos": @(ptr - data.bytes), @"read": @(size), @"length": @(data.length)}];
}
}
- (NSUInteger)position {
return ptr - data.bytes;
}
- (void)setPosition:(NSUInteger)position {
ptr = data.bytes + position;
}
- (NSString*)readString {
uint8_t stringLength = [self readUInt8];
if (stringLength == 0) {
return nil;
}
[self _checkReadableBytes:stringLength];
NSString *string = [[NSString alloc] initWithBytes:ptr length:stringLength encoding:NSUTF8StringEncoding];
ptr += stringLength;
return string;
}
- (uint8_t)readUInt8 {
[self _checkReadableBytes:1];
return *(uint8_t*)ptr++;
}
- (int8_t)readInt8 {
[self _checkReadableBytes:1];
return *(int8_t*)ptr++;
}
- (uint16_t)readUInt16 {
[self _checkReadableBytes:2];
uint16_t value = OSReadLittleInt16(ptr, 0);
ptr += 2;
return value;
}
- (int16_t)readInt16 {
[self _checkReadableBytes:2];
int16_t value = OSReadLittleInt16(ptr, 0);
ptr += 2;
return value;
}
- (uint32_t)readUInt32 {
[self _checkReadableBytes:4];
uint32_t value = OSReadLittleInt32(ptr, 0);
ptr += 4;
return value;
}
- (CGFloat)readFloat {
uint32_t value = [self readUInt32];
return *(float*)&value;
}
- (CGRect)readFrameOfSize:(NSUInteger)size withLastFrame:(CGRect)lastFrame {
CGRect frame = lastFrame;
CGFloat *output[4] = {&frame.origin.x, &frame.origin.y, &frame.size.width, &frame.size.height};
for (int i = 0; i < size; i++) {
uint16_t value = [self readUInt16];
if (value != 0x7FFF) {
*output[i] = (CGFloat)value;
}
}
return frame;
}
- (NSArray<NSString*>*)readStrings:(NSUInteger)count emptyStringMarker:(id)emptyStringMarker {
NSMutableArray *strings = [NSMutableArray arrayWithCapacity:count];
while (count--) {
[strings addObject:[self readString] ?: emptyStringMarker];
}
return strings;
}
@end