Added new method OpenGLContext::getContextAttachedTo()

modules/juce_opengl/opengl/juce_OpenGLContext.cpp

@@ -700,6 +700,14 @@ Component* OpenGLContext::getTargetComponent() const noexcept
     return attachment != nullptr ? attachment->getComponent() : nullptr;
 }
 
+OpenGLContext* OpenGLContext::getContextAttachedTo (Component& c) noexcept
+{
+    if (CachedImage* const ci = CachedImage::get (c))
+        return &(ci->context);
+
+    return nullptr;
+}
+
 static ThreadLocalValue<OpenGLContext*> currentThreadActiveContext;
 
 OpenGLContext* OpenGLContext::getCurrentContext()

modules/juce_opengl/opengl/juce_OpenGLContext.h

@@ -87,6 +87,9 @@ public:
     /** Returns the component to which this context is currently attached, or nullptr. */
     Component* getTargetComponent() const noexcept;
 
+    /** If the given component has an OpenGLContext attached, then this will return it. */
+    static OpenGLContext* getContextAttachedTo (Component& component) noexcept;
+
     //==============================================================================
     /** Sets the pixel format which you'd like to use for the target GL surface.
         Note: This must be called BEFORE attaching your context to a target component!