重构
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330
CustomKeyboard/View/KBKeyboardView/KBKeyboardRowBuilder.m
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330
CustomKeyboard/View/KBKeyboardView/KBKeyboardRowBuilder.m
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//
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// KBKeyboardRowBuilder.m
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// CustomKeyboard
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//
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#import "KBKeyboardRowBuilder.h"
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#import "KBKeyboardLayoutConfig.h"
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#import "KBKeyboardLayoutEngine.h"
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#import "KBKeyboardKeyFactory.h"
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#import "KBKeyButton.h"
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#import "KBKey.h"
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#import "KBBackspaceLongPressHandler.h"
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#import "KBSkinManager.h"
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#import <Masonry/Masonry.h>
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@interface KBKeyboardRowBuilder ()
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@property (nonatomic, strong) KBKeyboardLayoutConfig *layoutConfig;
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@property (nonatomic, strong) KBKeyboardLayoutEngine *layoutEngine;
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@property (nonatomic, strong) KBKeyboardKeyFactory *keyFactory;
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@end
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@implementation KBKeyboardRowBuilder
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- (instancetype)initWithLayoutConfig:(KBKeyboardLayoutConfig *)layoutConfig
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layoutEngine:(KBKeyboardLayoutEngine *)layoutEngine
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keyFactory:(KBKeyboardKeyFactory *)keyFactory {
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self = [super init];
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if (self) {
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_layoutConfig = layoutConfig;
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_layoutEngine = layoutEngine;
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_keyFactory = keyFactory;
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}
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return self;
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}
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- (void)buildRow:(UIView *)row
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withRowConfig:(KBKeyboardRowConfig *)rowConfig
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uniformCharWidth:(CGFloat)uniformCharWidth
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shiftOn:(BOOL)shiftOn
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backspaceHandler:(KBBackspaceLongPressHandler *)backspaceHandler
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target:(id)target
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action:(SEL)action {
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if (!row || !rowConfig) { return; }
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CGFloat gap = [self.layoutEngine gapForRow:rowConfig];
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CGFloat insetLeft = [self.layoutEngine insetLeftForRow:rowConfig];
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CGFloat insetRight = [self.layoutEngine insetRightForRow:rowConfig];
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if (rowConfig.segments) {
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KBKeyboardRowSegments *segments = rowConfig.segments;
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NSArray<KBKeyboardRowItem *> *leftItems = [segments leftItems];
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NSArray<KBKeyboardRowItem *> *centerItems = [segments centerItems];
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NSArray<KBKeyboardRowItem *> *rightItems = [segments rightItems];
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UIView *leftContainer = [UIView new];
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UIView *centerContainer = [UIView new];
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UIView *rightContainer = [UIView new];
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[row addSubview:leftContainer];
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[row addSubview:centerContainer];
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[row addSubview:rightContainer];
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[leftContainer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.left.equalTo(row.mas_left).offset(insetLeft);
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make.top.bottom.equalTo(row);
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}];
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[rightContainer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.right.equalTo(row.mas_right).offset(-insetRight);
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make.top.bottom.equalTo(row);
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}];
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[centerContainer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.centerX.equalTo(row);
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make.top.bottom.equalTo(row);
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make.left.greaterThanOrEqualTo(leftContainer.mas_right).offset(gap);
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make.right.lessThanOrEqualTo(rightContainer.mas_left).offset(-gap);
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}];
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if (leftItems.count == 0) {
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[leftContainer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.mas_equalTo(0);
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}];
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}
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if (centerItems.count == 0) {
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[centerContainer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.mas_equalTo(0);
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}];
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}
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if (rightItems.count == 0) {
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[rightContainer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.mas_equalTo(0);
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}];
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}
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[self kb_buildButtonsInContainer:leftContainer
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items:leftItems
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gap:gap
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insetLeft:0
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insetRight:0
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alignCenter:NO
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isTopLevelRow:NO
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uniformCharWidth:uniformCharWidth
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shiftOn:shiftOn
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backspaceHandler:backspaceHandler
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target:target
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action:action];
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[self kb_buildButtonsInContainer:centerContainer
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items:centerItems
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gap:gap
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insetLeft:0
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insetRight:0
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alignCenter:NO
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isTopLevelRow:NO
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uniformCharWidth:uniformCharWidth
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shiftOn:shiftOn
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backspaceHandler:backspaceHandler
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target:target
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action:action];
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[self kb_buildButtonsInContainer:rightContainer
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items:rightItems
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gap:gap
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insetLeft:0
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insetRight:0
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alignCenter:NO
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isTopLevelRow:NO
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uniformCharWidth:uniformCharWidth
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shiftOn:shiftOn
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backspaceHandler:backspaceHandler
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target:target
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action:action];
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return;
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}
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BOOL alignCenter = [rowConfig.align.lowercaseString isEqualToString:@"center"];
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[self kb_buildButtonsInContainer:row
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items:[rowConfig resolvedItems]
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gap:gap
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insetLeft:insetLeft
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insetRight:insetRight
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alignCenter:alignCenter
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isTopLevelRow:YES
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uniformCharWidth:uniformCharWidth
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shiftOn:shiftOn
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backspaceHandler:backspaceHandler
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target:target
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action:action];
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}
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#pragma mark - Private
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- (void)kb_buildButtonsInContainer:(UIView *)container
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items:(NSArray<KBKeyboardRowItem *> *)items
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gap:(CGFloat)gap
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insetLeft:(CGFloat)insetLeft
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insetRight:(CGFloat)insetRight
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alignCenter:(BOOL)alignCenter
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isTopLevelRow:(BOOL)isTopLevelRow
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uniformCharWidth:(CGFloat)uniformCharWidth
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shiftOn:(BOOL)shiftOn
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backspaceHandler:(KBBackspaceLongPressHandler *)backspaceHandler
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target:(id)target
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action:(SEL)action {
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if (items.count == 0) { return; }
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UIView *leftSpacer = nil;
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UIView *rightSpacer = nil;
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if (alignCenter) {
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leftSpacer = [UIView new];
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rightSpacer = [UIView new];
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[container addSubview:leftSpacer];
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[container addSubview:rightSpacer];
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[leftSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.left.equalTo(container.mas_left).offset(insetLeft);
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make.top.bottom.equalTo(container);
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}];
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[rightSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.right.equalTo(container.mas_right).offset(-insetRight);
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make.top.bottom.equalTo(container);
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}];
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[leftSpacer mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(rightSpacer);
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}];
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}
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BOOL usingUniformWidth = (uniformCharWidth > 0.0);
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BOOL allCharacterKeys = YES; // 跟踪该容器内是否全部为字符键
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KBKeyButton *previous = nil;
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KBKeyButton *firstCharBtn = nil; // 用于非统一模式下的行内等宽约束
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for (KBKeyboardRowItem *item in items) {
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KBKeyButton *btn = [self kb_buttonForItem:item
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shiftOn:shiftOn
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backspaceHandler:backspaceHandler
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target:target
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action:action];
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if (!btn) { continue; }
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[container addSubview:btn];
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[btn mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.bottom.equalTo(container);
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if (previous) {
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make.left.equalTo(previous.mas_right).offset(gap);
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} else {
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if (leftSpacer) {
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make.left.equalTo(leftSpacer.mas_right).offset(gap);
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} else {
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make.left.equalTo(container.mas_left).offset(insetLeft);
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}
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}
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}];
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// 字符键（letter/digit/sym）使用等宽约束，自动分配可用空间；
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// 功能键（shift/backspace/mode 等）使用固定宽度。
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BOOL isCharacterKey = [item.itemId hasPrefix:@"letter:"] ||
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[item.itemId hasPrefix:@"digit:"] ||
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[item.itemId hasPrefix:@"sym:"];
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if (!isCharacterKey) { allCharacterKeys = NO; }
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if (isCharacterKey && usingUniformWidth) {
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// 使用跨行统一的固定宽度
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CGFloat w = uniformCharWidth;
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[btn mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.mas_equalTo(w);
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}];
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} else if (isCharacterKey) {
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// 行内等宽：所有字符键与第一个字符键等宽
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if (firstCharBtn) {
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[btn mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(firstCharBtn);
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}];
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} else {
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firstCharBtn = btn;
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}
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} else {
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CGFloat width = [self.layoutEngine widthForItem:item key:btn.key];
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if (width > 0.0) {
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[btn mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.mas_equalTo(width);
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}];
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}
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}
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previous = btn;
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}
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if (!previous) { return; }
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// 当使用统一宽度且顶层行全部为字符键时，跳过右锚约束以实现左对齐（列对齐）
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BOOL skipRightAnchor = isTopLevelRow && usingUniformWidth && allCharacterKeys;
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if (!skipRightAnchor) {
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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(-gap);
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} else {
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make.right.equalTo(container.mas_right).offset(-insetRight);
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}
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}];
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}
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}
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- (KBKeyButton *)kb_buttonForItem:(KBKeyboardRowItem *)item
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shiftOn:(BOOL)shiftOn
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backspaceHandler:(KBBackspaceLongPressHandler *)backspaceHandler
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target:(id)target
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action:(SEL)action {
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if (item.itemId.length == 0) { return nil; }
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KBKeyboardKeyDef *def = [self.layoutConfig keyDefForIdentifier:item.itemId];
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KBKey *key = [self.keyFactory keyForItemId:item.itemId shiftOn:shiftOn];
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if (!key) { return nil; }
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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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UIColor *bgColor = [self kb_backgroundColorForItem:item keyDef:def];
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if (bgColor) {
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btn.customBackgroundColor = bgColor;
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}
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CGFloat fontSize = [self.layoutEngine fontSizeForItem:item key:key];
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if (fontSize > 0.0) {
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btn.titleLabel.font = [UIFont systemFontOfSize:fontSize weight:UIFontWeightSemibold];
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}
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[btn applyThemeForCurrentKey];
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if (target && action) {
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[btn addTarget:target action:action forControlEvents:UIControlEventTouchDown];
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}
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if (key.type == KBKeyTypeBackspace) {
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[backspaceHandler bindDeleteButton:btn showClearLabel:YES];
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}
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if (key.type == KBKeyTypeShift) {
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btn.selected = shiftOn;
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}
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[self kb_applySymbolIfNeededForButton:btn keyDef:def fontSize:fontSize];
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return btn;
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}
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- (UIColor *)kb_backgroundColorForItem:(KBKeyboardRowItem *)item keyDef:(KBKeyboardKeyDef *)def {
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NSString *hex = def.backgroundColor;
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if (hex.length == 0) {
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hex = self.layoutConfig.defaultKeyBackground;
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}
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if (hex.length == 0) { return nil; }
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return [KBSkinManager colorFromHexString:hex defaultColor:nil];
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}
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- (void)kb_applySymbolIfNeededForButton:(KBKeyButton *)button
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keyDef:(KBKeyboardKeyDef *)def
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fontSize:(CGFloat)fontSize {
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if (!button || !def) { return; }
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if (button.iconView.image != nil) { return; }
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NSString *symbolName = button.isSelected ? def.selectedSymbolName : def.symbolName;
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if (symbolName.length == 0) { return; }
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UIImage *image = [UIImage systemImageNamed:symbolName];
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if (!image) { return; }
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UIImageSymbolConfiguration *config = [UIImageSymbolConfiguration configurationWithPointSize:fontSize weight:UIFontWeightSemibold];
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image = [image imageWithConfiguration:config];
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button.iconView.image = image;
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button.iconView.hidden = NO;
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button.iconView.contentMode = UIViewContentModeCenter;
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button.titleLabel.hidden = YES;
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UIColor *textColor = [KBSkinManager shared].current.keyTextColor ?: [UIColor blackColor];
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button.iconView.tintColor = button.isSelected ? [UIColor blackColor] : textColor;
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}
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@end
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