如何在javascript中找出打印纸的维度 [英] How to find out the dimensionality of print paper in javascript

问题描述

我正在生成HTML格式的报告，并希望使用Qt自动打印它们（qt有一个基于webkit的浏览器，可以将其内容呈现为PDF文件）。
我想根据目标页面大小定位报告的元素。
为此我需要访问论文的大小（最好以像素为单位）。

I am generating reports in HTML formats, and want to print them automatically using Qt (qt has a webkit based browser, and one can render its contents to a PDF file). I want to position the elements of the report depending on the target page size. For that i need to access the size of the paper (preferably in pixels).

由于我使用的是webkit，它拥有所有最新的html5和css3功能。

Since i am using webkit, it has all the latest html5 and css3 features.

是否有一些api可用于访问javascript中的打印页面属性。例如，写起来会很好：
window.print_paper.width或window.print_paper.height

is there some api available to access printed page properties inside javascript. for example, would be nice to write: window.print_paper.width or window.print_paper.height

提前谢谢

推荐答案

你要求的是 standards-track @page spec 。 CSS3分页媒体（@page）允许您执行的操作是指定应在其上打印文档的方向和页面大小 - 而不是在系统中查询当前选定的方向和页面大小。据我所知，即使是CSS3媒体查询内容也不允许你这样做。

What you're asking for is backwards from the standards-track @page spec. What CSS3 paged media (@page) allows you to do is specify an orientation and page size that your document should be printed on - not query your system for the currently selected orientation and page size. Even the CSS3 media query stuff won't allow you to do this, to the best of my knowledge.

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