浏览器插件中的Directx控件 [英] Directx control in browser plugin

问题描述

我必须将DirectX控件插入到用于浏览器的firebreath插件中. 任何人都可以张贴样品该怎么做?我对插件一无所知...

I have to insert a directx control to a firebreath plug in for a browser. Can anyone post a sample how to do it? I have no knowledge in plugins...

10倍

推荐答案

我没有一个可以给您的示例，但是我可以大致告诉您您需要做什么.

I don't have an example that I can give you, but I can tell you roughly what you need to do.

首先，请阅读以下内容: http://colonelpanic.net/2010/11/firebreath-tips-drawing-on-windows/

First, read this: http://colonelpanic.net/2010/11/firebreath-tips-drawing-on-windows/

这将为您提供有关FireBreath中绘图工作方式的概述.

That will give you an overview of how drawing works in FireBreath.

首先，您在处理AttachedEvent时进行了所有设置.

First, you set everything up when handling AttachedEvent.

1. 创建一个新线程来处理图形(您的DirectX绘图不能在主线程上)
2. 从PluginWindowWin对象获取HWND(将FB :: PluginWindow *广播到FB :: PluginWindowWin并调用

1. Create a new thread to handle drawing (your DirectX drawing must not be on the main thread)
2. Get the HWND from the PluginWindowWin object (cast the FB::PluginWindow* to FB::PluginWindowWin and call getHWND())
3. Initialize DirectX on the secondary thread with the provided HWND. Set up some form of render loop and make sure you can send it commands from the main thread.
4. Handle the RefreshEvent (comes from WM_PAINT) by posting a message somehow to your render thread so it redraws when that event is fired.
5. Make sure that on DetachedEvent you shut down your thread.

您需要在同一线程上完成DirectX东西的所有初始化，绘制和关闭.这一切都需要在不仅是主线程的线程上发生(不要仅仅使用计时器)，因为否则，它将使某些版本的Firefox混乱浏览器渲染上下文-不知道为什么.

You need to do all initialization, drawing, and shutdown of the DirectX stuff on the same thread. This needs to all happen on a thread that is not just the main thread (don't just use timers) because otherwise it'll mess up the browser rendering context on some versions of Firefox -- not sure why.

无论如何，希望这会有所帮助.

Anyway, hope this helps.

编辑:要将参数传递给boost :: thread的开头，如果该参数是您决定使用的线程抽象，则只需将其作为参数传递即可.

Edit: To pass parameters into the start of a boost::thread, should that be the threading abstraction you decide to use, simply pass it in as a parameter.

boost::thread t(&MyClass::someFunction, this, theHWND);

这将启动线程.实际上，您可能希望使线程成为类变量或其他东西，以便以后可以访问它-请记住，您希望线程在处理DetachedEvent时已停止.对于消息，我可能会使用FB :: SafeQueue，这是FireBreath的一部分，是线程安全队列.查看如何使用它的来源；这非常简单(我认为是从代码项目文章中偷来的.)

That will start the thread. In actuality, you probably want to make the thread a class variable or something so that you can access it later -- remember that you'll want the thread to have stopped during the handling of DetachedEvent. For messages I'd probably use FB::SafeQueue, which is a threadsafe queue that is part of FireBreath. Look at the sources for how to use it; it's pretty straightforward (stolen from a codeproject article, I think).

// Inside MyClass
void someFunction(HWND theHWND) {
    ...
}

这篇关于浏览器插件中的Directx控件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！