PDF_Office/PDF Office/PDF Master/Class/Common/OC/Tools/KMTools_OC.m

//
//  KMTools_OC.m
//  PDF Master
//
//  Created by tangchao on 2023/3/27.
//

#import "KMTools_OC.h"
#import <AppKit/AppKit.h>

@implementation KMTools_OC

+ (BOOL)isDefaultRoleHandlerForContentType:(NSString*)fileExtension {
    NSString *app = (NSString*)CFBridgingRelease(LSCopyDefaultRoleHandlerForContentType((CFStringRef)CFBridgingRetain([self UTIforFileExtension:fileExtension]),
                                                                                        kLSRolesAll));
    if ([app isEqualToString:[[NSBundle mainBundle] bundleIdentifier]]) {
        return YES;
    }
    return NO;
}

+ (BOOL)setMyselfAsDefaultApplicationForFileExtension:(NSString *) fileExtension {
    OSStatus returnStatus = LSSetDefaultRoleHandlerForContentType ((CFStringRef)CFBridgingRetain([self UTIforFileExtension:fileExtension]),
                                                                   kLSRolesAll,
                                                                   (CFStringRef) CFBridgingRetain([[NSBundle mainBundle] bundleIdentifier]));
    if (returnStatus != 0) {
        return NO;
    }

    return YES;
}

+ (BOOL) setPreviewAsDefaultApplicationForFileExtension:(NSString *) fileExtension {
    OSStatus returnStatus = LSSetDefaultRoleHandlerForContentType ((CFStringRef)CFBridgingRetain([self UTIforFileExtension:fileExtension]),
                                                                   kLSRolesAll,
                                                                   (CFStringRef)@"com.apple.Preview");
    if (returnStatus != 0) {
        return NO;
    }

    return YES;
}

#pragma mark --SetDefaultRoleHandlerForContentType
+ (NSString *)UTIforFileExtension:(NSString *) extension {
    NSString * UTIString = (NSString *)CFBridgingRelease(UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension,
                                                                                               (CFStringRef)CFBridgingRetain(extension),
                                                                                               NULL));
    
    return UTIString;
}

@end

@implementation KMPageSizeTool

+ (NSString *)conversionWithUnit:(NSString *)unit value:(CGFloat)value
{
    CGFloat f = value;
    if ([unit isEqualToString:@"cm"]) {
        f =  value/10.0;
    } else if([unit isEqualToString:@"in"]){
        f = value/25.4;
    } else {
        f = value;
    }

    if (fmodf(f, 1)==0) {//如果有一位小数点
        return [NSString stringWithFormat:@"%.0f",f];
    } else if (fmodf(value*10, 1)==0) {//如果有两位小数点
        return [NSString stringWithFormat:@"%.1f",f];
    } else {
        return [NSString stringWithFormat:@"%.2f",f];
    }
}

@end