Eliminar esquina rizada de qlgenerator miniatura

Question

¿Cómo elimino el icono curvado una miniatura crear en un complemento quicklook?

Captura de pantalla del icono actual:

Captura de pantalla de lo que quiero:

GeneratePreviewForURL.m:

#include <CoreFoundation/CoreFoundation.h> 
#include <CoreServices/CoreServices.h> 
#include <QuickLook/QuickLook.h> 

#import "GenerateIcon.h" 

OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options); 
void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview); 

/* ----------------------------------------------------------------------------- 
    Generate a preview for file 

    This function's job is to create preview for designated file 
    ----------------------------------------------------------------------------- */ 

OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options) 
{ 
    // To complete your generator please implement the function GeneratePreviewForURL in GeneratePreviewForURL.c 

    [GenerateIcon generatePreviewWithRef:preview URL:url]; 

    return noErr; 
} 

void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview) 
{ 
    // Implement only if supported 
} 

GenerateIcon.m:

// 
// GenerateIcon.m 
// Windows Binary Icon 
// 
// Created by Asger Hautop Drewsen on 2/5/12. 
// Copyright (c) 2012 Asger Drewsen. All rights reserved. 
// 

#import "GenerateIcon.h" 

@implementation GenerateIcon 

+(void) generateThumbnailWithRef:(QLThumbnailRequestRef)requestRef URL:(CFURLRef)url 
{ 
    [GenerateIcon generateMultiWithThumbnailRef:requestRef PreviewRef:nil URL:url]; 
} 
+(void) generatePreviewWithRef:(QLPreviewRequestRef)requestRef URL:(CFURLRef)url 
{ 
    [GenerateIcon generateMultiWithThumbnailRef:nil PreviewRef:requestRef URL:url]; 
} 

    +(void) generateMultiWithThumbnailRef:(QLThumbnailRequestRef)thumbnail PreviewRef:(QLPreviewRequestRef)preview URL:(CFURLRef)url 
{ 
    @autoreleasepool { 

     NSString * tempDir = NSTemporaryDirectory(); 
     if (tempDir == nil) 
      tempDir = @"/tmp"; 

     NSFileManager *fileManager = [[NSFileManager alloc] init]; 

     NSString *directory = [tempDir stringByAppendingFormat: [NSString stringWithFormat:@"%@-%.0f", @"exe-icons", [NSDate timeIntervalSinceReferenceDate] * 1000.0]]; 

     //NSString *directory = [tempDir stringByAppendingPathComponent:@"com.tyilo.exe-icons"]; 

     /*for (NSString *file in [fileManager contentsOfDirectoryAtPath:directory error:nil]) 
     { 
     [fileManager removeItemAtPath:file error:nil]; 
     }*/ 

     [fileManager createDirectoryAtPath:directory withIntermediateDirectories:YES attributes:nil error:nil]; 

     [[NSTask launchedTaskWithLaunchPath:@"/usr/local/bin/wrestool" arguments:[NSArray arrayWithObjects: 
                        @"-t", 
                        @"group_icon", 
                        @"-o", 
                        directory, 
                        @"-x", 
                        [(__bridge NSURL *)url path], 
                        nil]] waitUntilExit]; 

     NSArray *icons = [fileManager contentsOfDirectoryAtPath:directory error:nil]; 

     if (icons.count > 0) 
     { 
      NSImage *image = [[NSImage alloc] initWithContentsOfFile:[directory stringByAppendingPathComponent: [icons objectAtIndex:0]]]; 
      NSData *thumbnailData = [image TIFFRepresentation]; 
      CGSize size = image.size; 
      NSDictionary *properties = [NSDictionary dictionaryWithObjectsAndKeys: 
             [NSNumber numberWithInt:size.width],kQLPreviewPropertyWidthKey, 
             [NSNumber numberWithInt:size.height],kQLPreviewPropertyHeightKey, 
             nil]; 
      CGContextRef CGContext; 
      if (thumbnail) 
      { 
       CGContext = QLThumbnailRequestCreateContext(thumbnail, size, TRUE, (__bridge CFDictionaryRef)properties); 
      } 
      else 
      { 
       CGContext = QLPreviewRequestCreateContext(preview, size, TRUE, (__bridge CFDictionaryRef)properties); 
      } 
      if(CGContext) { 
       NSGraphicsContext* context = [NSGraphicsContext graphicsContextWithGraphicsPort:(void *)CGContext flipped:size.width > size.height]; 
       if(context) { 
        //These two lines of code are just good safe programming… 
        [NSGraphicsContext saveGraphicsState]; 
        [NSGraphicsContext setCurrentContext:context]; 

        NSBitmapImageRep *thumbnailBitmap = [NSBitmapImageRep imageRepWithData:thumbnailData]; 
        [thumbnailBitmap draw]; 

        //This line sets the context back to what it was when we're done 
        [NSGraphicsContext restoreGraphicsState]; 
       } 

       // When we are done with our drawing code QLThumbnailRequestFlushContext() is called to flush the context 
       if (thumbnail) 
       { 
        QLThumbnailRequestFlushContext(thumbnail, CGContext); 
       } 
       else 
       { 
        QLPreviewRequestFlushContext(preview, CGContext); 
       } 

       // Release the CGContext 
       CFRelease(CGContext); 
      } 
      /*NSLog(@"%@", [directory stringByAppendingPathComponent: [icons objectAtIndex:0]]); 
      CGImageRef image = (__bridge CGImageRef) [[NSImage alloc] initByReferencingFile:[directory stringByAppendingPathComponent: [icons objectAtIndex:0]]]; 
      QLThumbnailRequestSetImage(thumbnail, image, properties);*/ 
     } 
     else 
     { 
      NSLog(@"Failed to generate thumbnail!"); 
     } 
    } 
} 

@end 

Edición: Capturas de pantalla añadidas.

Answer 1

El aspecto de sus iconos se elige automáticamente por Vista rápida y no hay forma pública de personalizarlo. ¿Cuál es su árbol de conformidad de tipo?

Para obtener más información sobre las infecciones urinarias, vea Uniform Type Identifiers Overview. Tenga en cuenta que su árbol de conformidad de tipo no se traducirá necesariamente a lo que desea de Vista rápida, pero al menos tendrá un punto de partida sensato.

Answer 2

¡Llego un poco tarde a esta pregunta!

Debe agregar la clave "IconFlavor" no documentada al diccionario de propiedades que suministra a QLThumbnailRequestCreateContext() o QLThumbnailRequestSetXXX(), y darle el valor 1 para una decoración mínima.

Vea un ejemplo en here. En la parte superior de ese archivo hay algunos otros valores que he descubierto para "IconFlavour".