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CustomKeyboard/View/KBKeyBoardMainView.h

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+//
+//  KBKeyBoardMainView.h
+//  CustomKeyboard
+//
+//  Created by Mac on 2025/10/28.
+//
+
+#import <UIKit/UIKit.h>
+
+
+@class KBKeyBoardMainView, KBKey;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol KBKeyBoardMainViewDelegate <NSObject>
+@optional
+/// 键被点击的回调
+- (void)keyBoardMainView:(KBKeyBoardMainView *)keyBoardMainView didTapKey:(KBKey *)key;
+
+/// 顶部工具栏按钮点击回调（index: 0~3）。
+/// 需求：当 index == 0 时，由外部（KeyboardViewController）决定是否切换到功能面板
+- (void)keyBoardMainView:(KBKeyBoardMainView *)keyBoardMainView didTapToolActionAtIndex:(NSInteger)index;
+@end
+
+@interface KBKeyBoardMainView : UIView
+@property (nonatomic, weak) id<KBKeyBoardMainViewDelegate> delegate;
+
+@end
+
+NS_ASSUME_NONNULL_END