使用Cocoa打印本地HTML [英] Print Local HTML using Cocoa

问题描述

我有一个简单的项目列表，需要使用Cocoa打印。我有一个半烘焙的解决方案，使用NSView与自定义 drawRect：方法，但它是相当复杂，不容易维护。

I have a simple list of items that needs to be printed using Cocoa. I have a half-baked solution that uses an NSView with a custom drawRect: method, but it's fairly complex and not very easy to maintain.

我想要的是一个HTML字符串（可以从列表中轻松构造），可以嵌入一个一次性WebView，然后打印。

What I would like to have is an HTML string (which could be easily constructed from the list) that can be embedded in a one-off WebView, then printed.

假设我有一个简单的NSString，例如：

Assuming I have a simple NSString like:

NSString *htmlString = @"<b>Test</b>";

创建显示此内容的WebView最简单的方法是什么？我试过下面的代码，但它导致一个单一的空白页：

What's the easiest method for creating a WebView displaying this content? I've tried the below code, but it results in a single blank page:

WebView *webView = [[WebView alloc] init];
NSString *dir = @"/Users/Me/Desktop/";
NSString *fileUrl = [dir stringByAppendingPathComponent:@"Temp_Print.html"];

NSString *htmlString = @"<b>Hi!</b>";
[[htmlString dataUsingEncoding:NSUTF8StringEncoding] writeToFile:fileUrl atomically:YES];

[[webView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:fileUrl]]];
[webView setFrame:NSMakeRect(0, 0, 500, 500)];
NSPrintOperation *po = [NSPrintOperation printOperationWithView:webView printInfo:pi];

[pi release];
[po runOperation];

推荐答案

！

运行循环需要迭代才能实际加载内容。我只是完成运行框架加载委托方法中的实际打印操作：

The run loop needs to iterate in order for the content to actually load. I simply finished running the actual print operation in the frame load delegate method:

- (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame {
   ...
}

a href =http://lists.apple.com/archives/webkitsdk-dev/2008/Oct/msg00018.html =nofollow>来源

Source

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