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POFirefox Cocoa Plugin
 

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  1. POFirefox Cocoa Plugin
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    <p>I`ve created simple hello world-like plugin which draws red box.</p> <p>Аfter embedding into xulrunner application the plugin works almost fine. Xulrunner application successfully redraws the box on resizing the application window.</p> <p>But after any mouse event, for instance - left click, my application crashes with "Stack overflow". Debugger says the reason is endless cycle of 2 calls of forwardMethod followed by one call of JSD_GetValueForObject</p> <p>After the crash stack contents is the next:</p> <ul> <li><code>-[NSApplication _indexOfWindow:]</code></li> <li><code>-[NSEvent window]</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>forwardMethod</code></li> <li><code>forwardMethod</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>forwardMethod</code></li> <li><code>forwardMethod</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>forwardMethod</code></li> <li><code>forwardMethod</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>forwardMethod</code></li> <li><code>forwardMethod</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>forwardMethod</code></li> <li><code>forwardMethod</code></li> <li><code>JSD_GetValueForObject</code></li> <li><code>forwardMethod</code></li> <li><code>forwardMethod</code></li> <li>.....etc</li> </ul> <p>My code is:</p> <pre><code>int16_t NPP_HandleEvent(NPP instance, void* event) { EventRecord* carbonEvent = (EventRecord*)event; if (carbonEvent &amp;&amp; (carbonEvent-&gt;what == updateEvt)) { PluginInstance* currentInstance = (PluginInstance*)(instance-&gt;pdata); CGContextRef cgContext = ((NP_CGContext*)(currentInstance-&gt;window.window))-&gt;context; float windowWidth = currentInstance-&gt;window.width; float windowHeight = currentInstance-&gt;window.height; static int x = 0; if (x++) return; NPRect clipRect = currentInstance-&gt;window.clipRect; NP_CGContext* npContext = currentInstance-&gt;window.window; NSWindow* browserWindow = [[[NSWindow alloc] initWithWindowRef:npContext-&gt;window] autorelease]; int y = [browserWindow frame].size.height - (clipRect.bottom - clipRect.top) - currentInstance-&gt;window.y; //[plugin attachToWindow:browserWindow at:NSMakePoint(window-&gt;x, y)]; NSPoint point = NSMakePoint(currentInstance-&gt;window.x, y); // find the NSView at the point NSView* hitView = [[browserWindow contentView] hitTest:NSMakePoint(point.x+1, point.y+1)]; if (hitView == nil || ![[hitView className] isEqualToString:@"ChildView"]) { x = 0; return; } NSView* parentView = hitView; NSBox *box = [[NSBox alloc] initWithFrame:NSMakeRect(0.0, 0.0, 100, 100)]; [box setBoxType:NSBoxCustom]; [box setBorderType:NSLineBorder]; [box setTitlePosition:NSNoTitle]; [box setFillColor:[NSColor redColor]]; [parentView addSubview:box]; //DrawPlugin(cgContext, windowWidth, windowHeight); } return 0; } </code></pre>
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    1. PO
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      1. PTAnswer
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    1. PTQuestion
    1. USWladimir Palant
    1. USMischa
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    1. PO
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      1. POFirefox Cocoa Plugin
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      1. VTUpMod
    1. CO`EventRecord` isn't a Carbon event record—it's a *pre-*Carbon event record. That is, it's the type from Toolbox's Event Manager. While that Event Manager does still exist in Carbon (in 32-bit), the true “Carbon Event Manager” is a separate API with its own opaque `EventRef` type.
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      1. POFirefox Cocoa Plugin
      1. USPeter Hosey
    2. COThank you, Peter for your comment. Maybe the problem could be solved after switching to the true Carbon Event model...If it is possible....
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      1. POFirefox Cocoa Plugin
      1. USMischa
    3. COI tried the next code in Debugger: NPError NPP_New(...) { NPBool supportsCoreGraphics; if (browser->getvalue(instance, NPNVsupportsCoreGraphicsBool, &supportsCoreGraphics) != NPERR_NO_ERROR) supportsCoreGraphics = FALSE; NPBool supportsCarbon; if (browser->getvalue(instance, NPNVsupportsCarbonBool, &supportsCarbon) != NPERR_NO_ERROR) supportsCarbon = FALSE; return 0; } After the the debugger stopped on "return" the supportsCarbon = false !!! I tried latest stable version of xulrunner and even the latest Beta version and the result remains always the same.
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      1. POFirefox Cocoa Plugin
      1. USMischa
 

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