获取垃圾箱的完整尺寸图标

时间:2011-06-01 13:27:25

标签: objective-c cocoa macos icons recycle-bin

我正在尝试在我的应用中显示垃圾箱的图标,包括空和满。我已经尝试了几种方法来获取图标,但每次大小为32x32。你知道一种获得全尺寸图像的方法吗?

4 个答案:

答案 0 :(得分:6)

我假设您使用来自IconsCore.h的kTrashIcon常量通过NSWorkspace获取垃圾桶图标(如果您不是,请执行以下操作:

NSImage* image = [[NSWorkspace sharedWorkspace] iconForFileType:NSFileTypeForHFSTypeCode(kTrashIcon)];

...此NSImage包含多种不同大小的表示。如果你想要最大的一个,只需遍历可用的表示来找到它:

NSEnumerator* representationEnumerator = [[image representations] objectEnumerator];
NSSize biggestSize = NSMakeSize(0, 0);
NSSize size;
while ((size = [(NSImageRep*)[representationEnumerator nextObject] size]).width) {
    if (size.width > biggestSize.width) {
        biggestSize = size;
    }
}
[image setSize:biggestSize];

...在我的电脑上,这会导致NSImage设置为512x512。

答案 1 :(得分:2)

如果您要从以下文件创建图像,请认识到32px x 32px只是默认大小:

/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/TrashIcon.icns

只需将其调整为您想要的尺寸:

NSString *path = @"/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/TrashIcon.icns";
NSImage *image = [[[NSImage alloc] initWithContentsOfFile:path] autorelease];
[image setSize:NSMakeSize(512.0, 512.0)];

执行此操作时,NSImage将自动从可用的图像代表中选择适当的图像代表。例如,记录图像显示以下描述:

image == NSImage 0x102e16bc0 Size={512, 512} Reps=(

    "NSBitmapImageRep 0x102e1f650 Size={512, 512} ColorSpace=(not yet loaded)
      BPS=8 BPP=(not yet loaded) Pixels=512x512 Alpha=YES Planar=NO
  Format=(not yet loaded) CurrentBacking=nil (faulting) CGImageSource=0x102e187d0",

    "NSBitmapImageRep 0x102e24c80 Size={256, 256} ColorSpace=(not yet loaded)
     BPS=8 BPP=(not yet loaded) Pixels=256x256 Alpha=YES Planar=NO
  Format=(not yet loaded) CurrentBacking=nil (faulting) CGImageSource=0x102e187d0",

    "NSBitmapImageRep 0x102e25540 Size={128, 128} ColorSpace=(not yet loaded)
    BPS=8 BPP=(not yet loaded) Pixels=128x128 Alpha=YES Planar=NO
  Format=(not yet loaded) CurrentBacking=nil (faulting) CGImageSource=0x102e187d0",

    "NSBitmapImageRep 0x102e25e30 Size={32, 32} ColorSpace=(not yet loaded)
    BPS=8 BPP=(not yet loaded) Pixels=32x32 Alpha=YES Planar=NO 
  Format=(not yet loaded) CurrentBacking=nil (faulting) CGImageSource=0x102e187d0",

    "NSBitmapImageRep 0x102e26720 Size={16, 16} ColorSpace=(not yet loaded)
    BPS=8 BPP=(not yet loaded) Pixels=16x16 Alpha=YES Planar=NO
  Format=(not yet loaded) CurrentBacking=nil (faulting) CGImageSource=0x102e187d0"
)

大多数代表文件图标的图片(例如NSWorkspace返回的图片)都有许多尺寸,但32 x 32是默认尺寸。

答案 2 :(得分:1)

/System/Library/CoreServices/Dock.app/Contents/Resources/trashfull.png /System/Library/CoreServices/Dock.app/Contents/Resources/trashempty.png

这是128x128图标

答案 3 :(得分:-4)

在Google图片上搜索“Mac OS Trash”