使用PDFKit界面显示pdf文件 [英] Displaying pdf files using the PDFKit interface

问题描述

我正在Mac OS 10.12上工作，并且有一个使用PDFKit界面显示pdf文件的应用程序. 但是我遇到了以下问题

I am working on a Mac OS 10.12, and have an application to display pdf files using the PDFKit interface. But I encountered the following issues

在原始操作系统中，例如，将pdf文档设置为PDFView. OS10.11中，将调用PDFView-> drawPage()函数，但在OS10.12中，不调用该函数；

Set pdf document to PDFView, in original OS,e.g. OS10.11 , there will invoke PDFView->drawPage() function, but in OS10.12,the function is not invoked;

PDFView can't draw pdf annotation in OS10.12;

以上解决方案将不胜感激

Solution to the above will be appreciated

推荐答案

我认为这是一个直接的bug或尚未记录的API更改.我将其记录为错误(27666426)，现在可以看到它被标记为开放副本(27668895).

I reckon this is either a straight out bug or an as yet undocumented API change. I logged this as a bug (27666426) and can see now that it is being flagged as an open duplicate (27668895).

请注意，在10.12 Beta 6中，-drawWithBox:toContext:会被调用，以代替现在已弃用的-drawWithBox:.请注意，对于所有图形，还必须使用传入的上下文.

Note that of 10.12 Beta 6 -drawWithBox:toContext: gets called in place of the now deprecated -drawWithBox:. Note that it is also necessary to use the passed in context for all drawing.

更新:

但是，随着10.12的发布，事情似乎并不那么简单.我发现从10.11的-drawWithBox:和10.12+的-drawWithBox:toContext:退出的PDF视图打印已损坏.

However things do not seem that simple with the 10.12 now that it is released. I find that my PDF view printing, which is driven off of -drawWithBox: on 10.11 and -drawWithBox:toContext: on 10.12+ is broken.

单步执行汇编程序，可以看到在打印时10.12现在调用-drawWithBox:inContext:而不是-drawWithBox:toContext:或-drawWithBox:(就像10.11一样).似乎inContext:选择器已经

Stepping through the assembler I can see that 10.12, when printing, now calls -drawWithBox:inContext: not -drawWithBox:toContext: or -drawWithBox: (as was the case on 10.11). It would seem that the inContext: selector has been around a while.

看来，唯一适用于10.9-10.12屏幕和打印效果的解决方案是使用未记录的-drawWithBox:inContext:.

It would seem that the only solution that works on 10.9 - 10.12 for both screen and print renders is to use the undocumented -drawWithBox:inContext:.

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