とった!(このコードは10.7でのみ機能します)最終的な画像がサムネイル画像にレンダリングされる前にアイコンが描画されていたため、問題が発生していました。そのため、元のアイコンが欠落している場所でこれらのアーティファクトが発生しました。オーバーレイは常にそこにありました...それは私が間違っていた描画操作の順序でした...!
ターゲットノードの名前もあります...TFENodeをfilePathに変換するにはTFENodeHelperクラスが必要です...
//
// DesktopViewIconOverlay.h
// FinderIconOverlayExample
//
// Created by Orbitus007 on 2/20/13.
//
//
#import <Foundation/Foundation.h>
#import <Quartz/Quartz.h>
#import "Finder.h"
@interface DesktopViewIconOverlay : NSObject
+ (void)pluginLoad;
- (void) FO_prepareToDrawNode:(const struct TFENode *)arg1;
- (void) FO_drawIconInContext:(struct CGContext *)arg1;
@end
//
// DesktopViewIconOverlay.m
// FinderIconOverlayExample
//
// Created by Orbitus007 on 2/20/13.
//
//
#import "DesktopViewIconOverlay.h"
#import "FinderIconOverlayExample.h"
#include <objc/objc.h>
#include <objc/runtime.h>
#import <Quartz/Quartz.h>
#import "TFENodeHelper.h"
static TFENodeHelper *gNodeHelper;
@implementation DesktopViewIconOverlay
+ (void)pluginLoad
{
// Create helper object
gNodeHelper = [[TFENodeHelper alloc] init];
if (gNodeHelper == nil) {
NSLog(@"Failed to instantiate 'TFENodeHelper' class");
return;
}
Method old, new;
Class self_class = [self class];
Class finder_class = [objc_getClass("TDesktopIcon") class];
class_addMethod(finder_class, @selector(FO_drawIconInContext:),
class_getMethodImplementation(self_class, @selector(FO_drawIconInContext:)),"v@:@");
old = class_getInstanceMethod(finder_class, @selector(drawIconInContext:));
new = class_getInstanceMethod(finder_class, @selector(FO_drawIconInContext:));
method_exchangeImplementations(old, new);
finder_class = [objc_getClass("TDesktopViewController") class];
class_addMethod(finder_class, @selector(FO_prepareToDrawNode:),
class_getMethodImplementation(self_class, @selector(FO_prepareToDrawNode:)),"v@:@");
old = class_getInstanceMethod(finder_class, @selector(prepareToDrawNode:));
new = class_getInstanceMethod(finder_class, @selector(FO_prepareToDrawNode:));
method_exchangeImplementations(old, new);
}
- (void) FO_prepareToDrawNode:(const struct TFENode *)arg1 {
NSString *path = [gNodeHelper pathForNode:arg1];
NSLog(@"Path = %@", path);
[[NSUserDefaults standardUserDefaults] setValue:path forKey:@"TDesktopIconURL"];
//struct OpaqueNodeRef *opr = arg1->fNodeRef;
//NSLog(@"path = %@", [[FINode nodeWithFENode:arg1] fullPath]);
//id fiNode = [FINode nodeFromNodeRef:opr];
//NSURL *url = [fiNode previewItemURL];
//[[NSUserDefaults standardUserDefaults] setValue:[url path] forKey:@"TDesktopIconURL"];
//NSLog(@"sending ", arg1->fNodeRef);
// save url somewhere (I use NSUserDefaults)
[self FO_prepareToDrawNode:arg1];
}
- (void) FO_drawIconInContext:(struct CGContext *)arg1
{
[self FO_drawIconInContext:arg1];
NSString *iconPath = [[NSUserDefaults standardUserDefaults] valueForKey:@"TDesktopIconURL"];
NSLog(@"recieved %@", iconPath);
if (![iconPath isEqualToString:@"/Users/h0xff/Desktop/Restart Finder.app"])
return;
NSString *imagePath = @"/Users/h0xff/Desktop/020513_icons/128_synced_green.png";
NSImage *overlay = [[NSImage alloc] initWithContentsOfFile:imagePath];
NSImage *mainImage = [(TDesktopIcon*)self thumbnailImage];
float width = 256.0;
float height = 256.0;
NSImage *finalImage = [[NSImage alloc] initWithSize:NSMakeSize(width, height)];
[finalImage lockFocus];
// draw the base image
[mainImage drawInRect:NSMakeRect(0, 0, width, height)
fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
// draw the overlay image at some offset point
[overlay drawInRect:NSMakeRect(0, 0, [overlay size].width/1.5, [overlay size].height/1.5)
fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
[finalImage unlockFocus];
// set image...
[(TDesktopIcon*)self setThumbnailImage:finalImage];
[self FO_drawIconInContext:arg1];
}
@end
このコードは、Alexey Zhuchkovや他の多くの人から派生したものです。もしあれば質問してください!
//
// TFENodeHelper.h
// FinderMenu
//
// Helper class to get full path from TFENode
//
// Created by Alexey Zhuchkov on 11/4/12.
// Copyright (c) 2012 InfiniteLabs. All rights reserved.
//
#import <Foundation/Foundation.h>
// Forward declarations
struct TFENode;
typedef enum {
TFENodeCtorTypeUnknown,
TFENodeCtorTypeNodeWithFENode, // nodeWithFENode
TFENodeCtorTypeNodeFromNodeRef, // nodeFromNodeRef
} TFENodeCtorType;
typedef enum {
TFENodePathMethodTypeUnknown,
TFENodePathMethodTypeFullPath, // fullPath
TFENodePathMethodTypePreviewItemURL, // previewItemURL
} TFENodePathMethodType;
@interface TFENodeHelper : NSObject {
@private
Class _class;
TFENodeCtorType _ctorType;
TFENodePathMethodType _pathMethodType;
}
- (NSString *)pathForNode:(const struct TFENode *)node;
@end
//
// TFENodeHelper.m
// FinderMenu
//
// Created by Alexey Zhuchkov on 11/4/12.
// Copyright (c) 2012 InfiniteLabs. All rights reserved.
//
#import "TFENodeHelper.h"
#import <objc/runtime.h>
#import "Finder.h"
@implementation TFENodeHelper
- (id)init {
self = [super init];
if (self) {
_class = NSClassFromString(@"FINode");
_ctorType = TFENodeCtorTypeUnknown;
_pathMethodType = TFENodePathMethodTypeUnknown;
if (_class) {
if (class_getClassMethod(_class, @selector(nodeWithFENode:))) {
_ctorType = TFENodeCtorTypeNodeWithFENode;
} else if (class_getClassMethod(_class, @selector(nodeFromNodeRef:))) {
_ctorType = TFENodeCtorTypeNodeFromNodeRef;
}
if (class_getInstanceMethod(_class, @selector(fullPath))) {
_pathMethodType = TFENodePathMethodTypeFullPath;
} else if (class_getInstanceMethod(_class, @selector(previewItemURL))) {
_pathMethodType = TFENodePathMethodTypePreviewItemURL;
}
}
if (!_class
|| (_ctorType == TFENodePathMethodTypeUnknown)
|| (_pathMethodType == TFENodePathMethodTypeUnknown)) {
[self release];
return nil;
}
}
return self;
}
- (NSString *)pathForNode:(const struct TFENode *)node {
FINode *fiNode = nil;
NSString *path = nil;
switch (_ctorType) {
case TFENodeCtorTypeNodeWithFENode:
fiNode = [_class nodeWithFENode:node];
break;
case TFENodeCtorTypeNodeFromNodeRef:
fiNode = [_class nodeFromNodeRef:node->fNodeRef];
break;
default:
break;
}
NSURL *url;
if (fiNode) {
switch (_pathMethodType) {
case TFENodePathMethodTypeFullPath:
path = [fiNode fullPath];
break;
case TFENodePathMethodTypePreviewItemURL:
url = [fiNode previewItemURL];
path = [url path];
default:
break;
}
}
return path;
}
@end