357 lines
16 KiB
Objective-C
357 lines
16 KiB
Objective-C
//
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// KBKeyboardView.m
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// CustomKeyboard
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//
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#import "KBKeyboardView.h"
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#import "KBKeyButton.h"
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#import "KBKey.h"
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#import "KBResponderUtils.h" // 封装的响应链工具
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#import "KBSkinManager.h"
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@interface KBKeyboardView ()
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@property (nonatomic, strong) UIView *row1;
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@property (nonatomic, strong) UIView *row2;
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@property (nonatomic, strong) UIView *row3;
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@property (nonatomic, strong) UIView *row4;
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@property (nonatomic, strong) NSArray<NSArray<KBKey *> *> *keysForRows;
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// 长按退格的一次次删除控制标记（不使用 NSTimer，仅用 GCD 递归调度）
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@property (nonatomic, assign) BOOL backspaceHoldActive;
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@end
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@implementation KBKeyboardView
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- (instancetype)initWithFrame:(CGRect)frame {
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if (self = [super initWithFrame:frame]) {
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self.backgroundColor = [KBSkinManager shared].current.keyboardBackground;
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_layoutStyle = KBKeyboardLayoutStyleLetters;
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// 默认小写：与需求一致，初始不开启 Shift
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_shiftOn = NO;
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_symbolsMoreOn = NO; // 数字面板默认第一页（123）
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[self buildBase];
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[self reloadKeys];
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}
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return self;
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}
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// 当切换大布局（字母/数字）时，重置数字二级页状态
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- (void)setLayoutStyle:(KBKeyboardLayoutStyle)layoutStyle {
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_layoutStyle = layoutStyle;
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if (_layoutStyle != KBKeyboardLayoutStyleNumbers) {
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_symbolsMoreOn = NO;
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}
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}
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- (void)buildBase {
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[self addSubview:self.row1];
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[self addSubview:self.row2];
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[self addSubview:self.row3];
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[self addSubview:self.row4];
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CGFloat vSpacing = 8;
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[self.row1 mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.equalTo(self.mas_top).offset(8);
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make.left.right.equalTo(self);
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make.height.mas_equalTo(44);
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}];
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[self.row2 mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.equalTo(self.row1.mas_bottom).offset(vSpacing);
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make.left.right.equalTo(self);
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make.height.equalTo(self.row1);
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}];
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[self.row3 mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.equalTo(self.row2.mas_bottom).offset(vSpacing);
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make.left.right.equalTo(self);
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make.height.equalTo(self.row1);
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}];
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[self.row4 mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.equalTo(self.row3.mas_bottom).offset(vSpacing);
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make.left.right.equalTo(self);
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make.height.equalTo(self.row1);
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make.bottom.equalTo(self.mas_bottom).offset(-6);
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}];
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}
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- (void)reloadKeys {
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// 移除旧按钮
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for (UIView *row in @[self.row1, self.row2, self.row3, self.row4]) {
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[row.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
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}
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self.keysForRows = [self buildKeysForCurrentLayout];
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[self buildRow:self.row1 withKeys:self.keysForRows[0]];
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// 第二行：字母布局时通过左右等宽占位让整行居中
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CGFloat row2Spacer = (self.layoutStyle == KBKeyboardLayoutStyleLetters) ? 0.5 : 0.0;
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[self buildRow:self.row2 withKeys:self.keysForRows[1] edgeSpacerMultiplier:row2Spacer];
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[self buildRow:self.row3 withKeys:self.keysForRows[2]];
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[self buildRow:self.row4 withKeys:self.keysForRows[3]];
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}
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- (NSArray<NSArray<KBKey *> *> *)buildKeysForCurrentLayout {
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if (self.layoutStyle == KBKeyboardLayoutStyleNumbers) {
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// 数字/符号布局：3 行主键 + 底部控制行
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NSArray *r1 = nil;
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NSArray *r2 = nil;
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NSArray *r3 = nil;
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if (!self.symbolsMoreOn) {
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// 数字第一页（123）
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r1 = @[ [KBKey keyWithTitle:@"1" output:@"1"], [KBKey keyWithTitle:@"2" output:@"2"], [KBKey keyWithTitle:@"3" output:@"3"],
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[KBKey keyWithTitle:@"4" output:@"4"], [KBKey keyWithTitle:@"5" output:@"5"], [KBKey keyWithTitle:@"6" output:@"6"],
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[KBKey keyWithTitle:@"7" output:@"7"], [KBKey keyWithTitle:@"8" output:@"8"], [KBKey keyWithTitle:@"9" output:@"9"], [KBKey keyWithTitle:@"0" output:@"0"] ];
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r2 = @[ [KBKey keyWithTitle:@"-" output:@"-"], [KBKey keyWithTitle:@"/" output:@"/"], [KBKey keyWithTitle:@":" output:@":"],
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[KBKey keyWithTitle:@";" output:@";"], [KBKey keyWithTitle:@"(" output:@"("], [KBKey keyWithTitle:@")" output:@")"],
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[KBKey keyWithTitle:@"$" output:@"$"], [KBKey keyWithTitle:@"&" output:@"&"], [KBKey keyWithTitle:@"@" output:@"@"], [KBKey keyWithTitle:@"\"" output:@"\""] ];
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r3 = @[ [KBKey keyWithTitle:@"#+=" type:KBKeyTypeSymbolsToggle],
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[KBKey keyWithTitle:@"," output:@","], [KBKey keyWithTitle:@"." output:@"."], [KBKey keyWithTitle:@"?" output:@"?"],
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[KBKey keyWithTitle:@"!" output:@"!"], [KBKey keyWithTitle:@"'" output:@"'"],
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[KBKey keyWithTitle:@"⌫" type:KBKeyTypeBackspace] ];
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} else {
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// 数字第二页（#+=）：前两行替换为更多符号，左下角按钮文案改为“123”
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r1 = @[ [KBKey keyWithTitle:@"[" output:@"["], [KBKey keyWithTitle:@"]" output:@"]"], [KBKey keyWithTitle:@"{" output:@"{"],
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[KBKey keyWithTitle:@"}" output:@"}"], [KBKey keyWithTitle:@"#" output:@"#"], [KBKey keyWithTitle:@"%" output:@"%"],
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[KBKey keyWithTitle:@"^" output:@"^"], [KBKey keyWithTitle:@"*" output:@"*"], [KBKey keyWithTitle:@"+" output:@"+"],
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[KBKey keyWithTitle:@"=" output:@"="] ];
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r2 = @[ [KBKey keyWithTitle:@"_" output:@"_"], [KBKey keyWithTitle:@"\\" output:@"\\"], [KBKey keyWithTitle:@"|" output:@"|"],
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[KBKey keyWithTitle:@"~" output:@"~"], [KBKey keyWithTitle:@"<" output:@"<"], [KBKey keyWithTitle:@">" output:@">"],
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[KBKey keyWithTitle:@"$" output:@"$"], [KBKey keyWithTitle:@"€" output:@"€"], [KBKey keyWithTitle:@"£" output:@"£"],
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[KBKey keyWithTitle:@"•" output:@"•"] ];
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r3 = @[ [KBKey keyWithTitle:@"123" type:KBKeyTypeSymbolsToggle],
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[KBKey keyWithTitle:@"," output:@","], [KBKey keyWithTitle:@"." output:@"."], [KBKey keyWithTitle:@"?" output:@"?"],
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[KBKey keyWithTitle:@"!" output:@"!"], [KBKey keyWithTitle:@"'" output:@"'"],
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[KBKey keyWithTitle:@"⌫" type:KBKeyTypeBackspace] ];
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}
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NSArray *r4 = @[ [KBKey keyWithTitle:@"abc" type:KBKeyTypeModeChange],
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[KBKey keyWithTitle:@"AI" type:KBKeyTypeCustom],
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[KBKey keyWithTitle:@"space" type:KBKeyTypeSpace],
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[KBKey keyWithTitle:@"发送" type:KBKeyTypeReturn] ];
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return @[r1, r2, r3, r4];
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}
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// 字母布局（QWERTY）
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NSArray *r1 = @[ @"Q", @"W", @"E", @"R", @"T", @"Y", @"U", @"I", @"O", @"P" ];
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NSArray *r2 = @[ @"A", @"S", @"D", @"F", @"G", @"H", @"J", @"K", @"L" ];
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NSArray *r3chars = @[ @"Z", @"X", @"C", @"V", @"B", @"N", @"M" ];
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NSMutableArray *row1 = [NSMutableArray arrayWithCapacity:r1.count];
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// 字母键标题与输出同时随 Shift 切换大小写，界面与输入保持一致
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for (NSString *s in r1) {
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NSString *shown = self.shiftOn ? s : s.lowercaseString;
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[row1 addObject:[KBKey keyWithTitle:shown output:shown]];
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}
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NSMutableArray *row2 = [NSMutableArray arrayWithCapacity:r2.count];
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for (NSString *s in r2) {
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NSString *shown = self.shiftOn ? s : s.lowercaseString;
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[row2 addObject:[KBKey keyWithTitle:shown output:shown]];
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}
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NSMutableArray *row3 = [NSMutableArray array];
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[row3 addObject:[KBKey keyWithTitle:@"⇧" type:KBKeyTypeShift]];
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for (NSString *s in r3chars) {
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NSString *shown = self.shiftOn ? s : s.lowercaseString;
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[row3 addObject:[KBKey keyWithTitle:shown output:shown]];
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}
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[row3 addObject:[KBKey keyWithTitle:@"⌫" type:KBKeyTypeBackspace]];
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NSArray *row4 = @[ [KBKey keyWithTitle:@"123" type:KBKeyTypeModeChange],
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[KBKey keyWithTitle:@"AI" type:KBKeyTypeCustom],
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[KBKey keyWithTitle:@"space" type:KBKeyTypeSpace],
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[KBKey keyWithTitle:@"发送" type:KBKeyTypeReturn] ];
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return @[row1.copy, row2.copy, row3.copy, row4];
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}
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- (void)buildRow:(UIView *)row withKeys:(NSArray<KBKey *> *)keys {
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[self buildRow:row withKeys:keys edgeSpacerMultiplier:0.0];
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}
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- (void)buildRow:(UIView *)row withKeys:(NSArray<KBKey *> *)keys edgeSpacerMultiplier:(CGFloat)edgeSpacerMultiplier {
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CGFloat hInset = 6; // 行左右内边距
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CGFloat spacing = 6; // 键与键之间的间距
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UIView *previous = nil;
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UIView *leftSpacer = nil;
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UIView *rightSpacer = nil;
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if (edgeSpacerMultiplier > 0.0) {
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leftSpacer = [UIView new];
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rightSpacer = [UIView new];
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leftSpacer.backgroundColor = [UIColor clearColor];
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rightSpacer.backgroundColor = [UIColor clearColor];
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[row addSubview:leftSpacer];
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[row addSubview:rightSpacer];
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[leftSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.left.equalTo(row.mas_left).offset(hInset);
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make.centerY.equalTo(row);
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make.height.mas_equalTo(1);
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}];
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[rightSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.right.equalTo(row.mas_right).offset(-hInset);
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make.centerY.equalTo(row);
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make.height.mas_equalTo(1);
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}];
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}
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for (NSInteger i = 0; i < keys.count; i++) {
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KBKey *key = keys[i];
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KBKeyButton *btn = [[KBKeyButton alloc] init];
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btn.key = key;
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[btn setTitle:key.title forState:UIControlStateNormal];
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[btn addTarget:self action:@selector(onKeyTapped:) forControlEvents:UIControlEventTouchUpInside];
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[row addSubview:btn];
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// ⌫ 长按：开始连续逐个删除（无需 NSTimer）。使用 UILongPressGestureRecognizer 识别长按，
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// 在开始态触发递归的轻量调度，每次删除 1 个字符，直到松手或无内容。
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if (key.type == KBKeyTypeBackspace) {
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UILongPressGestureRecognizer *lp = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(onBackspaceLongPress:)];
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// 稍短的判定时间，提升响应（默认约 0.5s）。
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lp.minimumPressDuration = 0.35;
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lp.cancelsTouchesInView = YES; // 被识别为长按时，取消普通点击
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[btn addGestureRecognizer:lp];
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}
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// Shift 按钮选中态随大小写状态变化
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if (key.type == KBKeyTypeShift) {
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btn.selected = self.shiftOn;
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}
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[btn mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.bottom.equalTo(row);
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if (previous) {
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make.left.equalTo(previous.mas_right).offset(spacing);
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} else {
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if (leftSpacer) {
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make.left.equalTo(leftSpacer.mas_right).offset(spacing);
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} else {
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make.left.equalTo(row.mas_left).offset(hInset);
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}
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}
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}];
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// 宽度规则：字符键等宽；特殊键按倍数放大
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if (key.type == KBKeyTypeCharacter) {
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if (previous && previous != nil) {
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if (((KBKeyButton *)previous).key.type == KBKeyTypeCharacter) {
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[btn mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(previous);
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}];
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}
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}
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} else {
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// special keys: give 1.5x of a character key by deferring constraint equalities after loop
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}
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previous = btn;
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}
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// 右侧使用内边距或右占位
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[previous mas_makeConstraints:^(MASConstraintMaker *make) {
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if (rightSpacer) {
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make.right.equalTo(rightSpacer.mas_left).offset(-spacing);
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} else {
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make.right.equalTo(row.mas_right).offset(-hInset);
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}
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}];
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// 第二遍：以首个字符键为基准，统一设置特殊键宽度倍数
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KBKeyButton *firstChar = nil;
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for (KBKeyButton *b in row.subviews) {
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if ([b isKindOfClass:[KBKeyButton class]] && b.key.type == KBKeyTypeCharacter) { firstChar = b; break; }
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}
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// 若该行没有字符键（例如底部控制行），则使用行内第一个按钮作为基准宽度
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if (!firstChar) {
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for (KBKeyButton *b in row.subviews) { if ([b isKindOfClass:[KBKeyButton class]]) { firstChar = b; break; } }
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}
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if (firstChar) {
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for (KBKeyButton *b in row.subviews) {
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if (![b isKindOfClass:[KBKeyButton class]]) continue;
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// 当本行没有字符键时，firstChar 可能是一个“特殊键”，
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// 避免对基准按钮自身添加 self == self * k 的无效约束
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if (b == firstChar) continue;
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if (b.key.type == KBKeyTypeCharacter) continue;
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CGFloat multiplier = 1.5;
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if (b.key.type == KBKeyTypeSpace) multiplier = 4.0;
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if (b.key.type == KBKeyTypeReturn) multiplier = 1.8;
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if (b.key.type == KBKeyTypeModeChange || b.key.type == KBKeyTypeGlobe || b.key.type == KBKeyTypeShift || b.key.type == KBKeyTypeBackspace) {
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multiplier = 1.5;
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}
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[b mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(firstChar).multipliedBy(multiplier);
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}];
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}
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// 如果有左右占位，则把占位宽度设置为字符键宽度的一定倍数，以实现整体居中
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if (leftSpacer && rightSpacer) {
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[leftSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(firstChar).multipliedBy(edgeSpacerMultiplier);
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}];
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[rightSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(firstChar).multipliedBy(edgeSpacerMultiplier);
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}];
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}
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}
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}
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#pragma mark - Actions
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- (void)onKeyTapped:(KBKeyButton *)sender {
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KBKey *key = sender.key;
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if (key.type == KBKeyTypeShift) {
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self.shiftOn = !self.shiftOn;
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[self reloadKeys];
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return;
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}
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if (key.type == KBKeyTypeSymbolsToggle) {
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// 在数字布局内切换 123 <-> #+=
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self.symbolsMoreOn = !self.symbolsMoreOn;
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[self reloadKeys];
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return;
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}
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if ([self.delegate respondsToSelector:@selector(keyboardView:didTapKey:)]) {
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[self.delegate keyboardView:self didTapKey:key];
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}
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}
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// 长按退格：按住时以小间隔逐个删除；松手停止。（不使用 NSTimer/DisplayLink）
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- (void)onBackspaceLongPress:(UILongPressGestureRecognizer *)gr {
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switch (gr.state) {
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case UIGestureRecognizerStateBegan: {
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self.backspaceHoldActive = YES;
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[self kb_backspaceStep];
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} break;
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case UIGestureRecognizerStateEnded:
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case UIGestureRecognizerStateCancelled:
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case UIGestureRecognizerStateFailed: {
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self.backspaceHoldActive = NO;
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} break;
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default: break;
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}
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}
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#pragma mark - Helpers
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// 单步删除并在需要时安排下一次，直到松手或无内容
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- (void)kb_backspaceStep {
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if (!self.backspaceHoldActive) { return; }
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UIInputViewController *ivc = KBFindInputViewController(self);
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if (!ivc) { self.backspaceHoldActive = NO; return; }
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id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
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NSString *before = proxy.documentContextBeforeInput ?: @"";
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if (before.length <= 0) { self.backspaceHoldActive = NO; return; }
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[proxy deleteBackward]; // 每次仅删 1 个
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// 轻量递归调度下一次；不使用 NSTimer，避免复杂状态管理
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__weak typeof(self) weakSelf = self;
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.06 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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__strong typeof(weakSelf) selfStrong = weakSelf;
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[selfStrong kb_backspaceStep];
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});
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}
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#pragma mark - Lazy
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- (UIView *)row1 { if (!_row1) _row1 = [UIView new]; return _row1; }
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- (UIView *)row2 { if (!_row2) _row2 = [UIView new]; return _row2; }
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- (UIView *)row3 { if (!_row3) _row3 = [UIView new]; return _row3; }
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- (UIView *)row4 { if (!_row4) _row4 = [UIView new]; return _row4; }
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@end
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