如何在可爱事件模型NPAPI插件中获取NSView [英] How do I get an NSView in a cocoa event model NPAPI plugin

问题描述

我已经从夜间Webkit构建中跟踪NetscapeCocoaPlugin示例，我可以构建一个使用Cocoa事件模型的NPAPI样式插件。

I've followed the NetscapeCocoaPlugin example from the nightly Webkit build, and I'm able to build a NPAPI style plugin that uses the Cocoa Event Model.

我现在的问题，是如何获得NSView内部的NPP_SetWindow。

My question now, is how I can get the NSView inside NPP_SetWindow.

此主题中的海报，

我的当前函数看起来像这样：

My current function looks like this:

NPError NPP_SetWindow(NPP instance, NPWindow* window)
{
PluginObject *obj = instance->pdata;
obj->window = *window;

NSLog(@"Set Window called");

NSView* currentView = [NSView focusView];

[[NSColor redColor] set]; // Sets current drawing color.
NSRectFill(NSMakeRect(10, 10, 2, 20)); // Defines a rectangle and then fills it with the current drawing color.
[[NSColor colorWithCalibratedRed:0.7 green:0.9 blue:0.3 alpha:1.0] set]; // Sets a new color.
[[NSBezierPath bezierPathWithOvalInRect:NSMakeRect(5, 0, 10, 10)] fill]; // Draws a circle in the new color.

[currentView setNeedsDisplay:YES];

return NPERR_NO_ERROR;
}

推荐答案

有一个时候，你可以得到NSView使用一个黑客，但它从来没有得到支持，从来没有一个好主意，不再可能，因为所有三个浏览器已经切换到使用过程外插件，这意味着你不能访问

You can't. There was a time when you could get the NSView using a hack, but it was never supported, never a good idea, and no longer possible because all three browsers have switched to using out of process plugins, which means you can't get access to the NSView.

您可以获得一个CGContextRef，然后创建自己的屏幕外NSWindow和NSView并将它们渲染到CGContextRef，但是你必须代理所有事件以及。 WebView封装在< a href =http://www.firebreath.org =nofollow> FireBreath 这是实验性的，但这是相当痛苦。最后，我打算把它变成更通用的东西，所以一个NSView可以（kinda）在插件中使用，但没有本机的方式这样做。

You can get a CGContextRef and then create your own offscreen NSWindow and NSView and render them into the CGContextRef, but then you'd have to proxy all events as well. There is a WebView wrapper in FireBreath that is experimental still that does this, but it is quite a pain. Eventually I plan to turn it into something more generic so that an NSView can (kinda) be used in a plugin, but there is no native way to do so.

是一篇有关Mac绘图模型的优秀博文： http：// www.escapedthoughts.com/weblog/geek/P110308-mac-npapi-plugins.writeback

There is an excellent blog post about mac drawing models here: http://www.escapedthoughts.com/weblog/geek/P110308-mac-npapi-plugins.writeback

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