重构

CustomKeyboard/View/KBKeyboardView/KBKeyboardLayoutEngine.h

@@ -0,0 +1,42 @@
+//
+//  KBKeyboardLayoutEngine.h
+//  CustomKeyboard
+//
+//  Layout metrics calculation helper.
+//
+
+#import <Foundation/Foundation.h>
+
+@class KBKeyboardLayoutConfig;
+@class KBKeyboardLayout;
+@class KBKeyboardRowConfig;
+@class KBKeyboardRowItem;
+@class KBKeyboardKeyFactory;
+@class KBKey;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface KBKeyboardLayoutEngine : NSObject
+
+- (instancetype)initWithLayoutConfig:(KBKeyboardLayoutConfig *)layoutConfig;
+
+- (CGFloat)rowSpacingForLayout:(KBKeyboardLayout *)layout;
+- (CGFloat)topInsetForLayout:(KBKeyboardLayout *)layout;
+- (CGFloat)bottomInsetForLayout:(KBKeyboardLayout *)layout;
+
+- (CGFloat)rowHeightForRow:(KBKeyboardRowConfig *)row;
+- (CGFloat)gapForRow:(KBKeyboardRowConfig *)row;
+- (CGFloat)insetLeftForRow:(KBKeyboardRowConfig *)row;
+- (CGFloat)insetRightForRow:(KBKeyboardRowConfig *)row;
+
+- (CGFloat)widthForItem:(KBKeyboardRowItem *)item key:(KBKey *)key;
+- (CGFloat)fontSizeForItem:(KBKeyboardRowItem *)item key:(KBKey *)key;
+- (CGFloat)fontSizeForFontKey:(NSString *)fontKey;
+
+- (CGFloat)calculateUniformCharKeyWidthForRows:(NSArray<KBKeyboardRowConfig *> *)rows
+                                    keyFactory:(KBKeyboardKeyFactory *)keyFactory
+                                       shiftOn:(BOOL)shiftOn;
+
+@end
+
+NS_ASSUME_NONNULL_END