将NSView保存到png文件? [英] Saving an NSView to a png file?

问题描述

我正在制作一个简单的程序，该程序可以为我玩的游戏创建游戏卡.我已将其发送给我的一些朋友进行测试，但他们确实希望它保存图像，而不仅仅是打印图像.我试图使其另存为.png文件.我必须在这里提问.

I am making a simple program that creates game cards for a game I play. I have sent it out to some friends of mine for testing, but they really want it to save images, not just print them. I have tried to make it save as a .png file. I have to questions here.

• 如何使其将视图保存为.png文件，包括视图的所有NSImageWells.

• How can I make it save my view as a .png file, including all of the view's NSImageWells.

如何将NSPopupButton添加到NSSavePanel以允许用户选择格式?

How can I add an NSPopupButton to an NSSavePanel to allow users to select a format?

非常感谢您的帮助.

推荐答案

首先创建视图的TIFF表示形式:

First create a TIFF representation of your view:

// Get the data into a bitmap.
[self lockFocus];
rep = [[NSBitmapImageRep alloc] initWithFocusedViewRect:[self bounds]];
[self unlockFocus];
data = [rep TIFFRepresentation];

要支持多种文件类型，请使用:

To support multiple file types, use:

data = [rep representationUsingType:(NSBitmapImageFileType)storageType
properties:(NSDictionary *)properties];

NSBitmapImageFileType是一个枚举常量，用于指定位图图像的文件类型.可以是NSBMPFileType，NSGIFFileType，NSJPEGFileType，NSPNGFileType或NSTIFFFileType.

NSBitmapImageFileType is an enum constant specifying a file type for bitmap images. It can be NSBMPFileType, NSGIFFileType, NSJPEGFileType, NSPNGFileType, or NSTIFFFileType.

如果需要自定义NSSavePanel，请查看附件视图: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/AppFileMgmt/Articles/ManagingAccessoryViews.html

If you need to customize the NSSavePanel, look into accessory views: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/AppFileMgmt/Articles/ManagingAccessoryViews.html

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