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黑人夏川

QT MAC下文件文件夹混合多选对话框解决方案

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问题描述

由于QFileDialog仅支持多选文件或者单选目录，但是有些场景又需要文件文件夹混合多选。

Qt文档

The QFileDialog class enables a user to traverse the file system in order to select one or many files or a directory.

机翻

QFileDialog 类使用户能够遍历文件系统以选择一个或多个文件或目录。

解决方案

使用mac下系统对话框

macfiledialog.mm

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#include "macfiledialog.hpp"

#include <QStringList>

#import <Appkit/NSOpenPanel.h>
#import <Foundation/Foundation.h>


QStringList getMacFiles(QWidget *widget)
{
    auto *nsView = reinterpret_cast<NSView *>(widget->winId());
    NSWindow *nsWindow = [nsView window];
    if (!nsWindow) {
        qWarning("Failed to get native NSWindow from QWidget");
        return {};
    }

    QStringList files;
    NSMutableArray *fileURLArray = [[NSMutableArray alloc] init];

    NSOpenPanel *panel = [NSOpenPanel openPanel];
    [panel setCanChooseDirectories:YES];
    [panel setCanChooseFiles:YES];
    [panel setCanCreateDirectories:YES];
    [panel setAllowsMultipleSelection:YES];
    [panel setResolvesAliases:YES];

   static QEventLoop loop;

    //界面出现在电脑屏幕中央
    [panel beginSheetModalForWindow:nsWindow completionHandler:^(NSInteger result)  {
        if (result == NSModalResponseOK) {
            NSLog(@"OK");
            for (NSURL *url in [panel URLs]) {
                NSString *path = [NSString stringWithString:[url path]];
                //path = [path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
                //path = [path stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
                [fileURLArray addObject:path];
                //NSLog(@"%@", path);
            }

            NSLog(@"%@", fileURLArray);
        } else if (result == NSModalResponseCancel) {
            NSLog(@"Cancel");
        } else if (result == NSModalResponseStop) {
            NSLog(@"Stop");
        }
        loop.quit();
    }];

    loop.exec();
    for (NSString *a in fileURLArray) {
        files.append(QString::fromNSString(a));
    }
    return files;
}

pro

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mac{
    HEADERS += $$PWD/macdialog.hpp
    SOURCES += $$PWD/macdialog.mm
    
    LIBS += \
     -framework AppKit \
     -framework CoreFoundation
}