686 lines
23 KiB
C++
686 lines
23 KiB
C++
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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bool juce_handleXEmbedEvent (ComponentPeer*, void*);
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Window juce_getCurrentFocusWindow (ComponentPeer*);
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//==============================================================================
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unsigned long juce_createKeyProxyWindow (ComponentPeer*);
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void juce_deleteKeyProxyWindow (ComponentPeer*);
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//==============================================================================
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class XEmbedComponent::Pimpl : private ComponentListener
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{
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public:
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enum
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{
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maxXEmbedVersionToSupport = 0
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};
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enum Flags
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{
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XEMBED_MAPPED = (1<<0)
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};
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enum
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{
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XEMBED_EMBEDDED_NOTIFY = 0,
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XEMBED_WINDOW_ACTIVATE = 1,
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XEMBED_WINDOW_DEACTIVATE = 2,
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XEMBED_REQUEST_FOCUS = 3,
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XEMBED_FOCUS_IN = 4,
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XEMBED_FOCUS_OUT = 5,
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XEMBED_FOCUS_NEXT = 6,
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XEMBED_FOCUS_PREV = 7,
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XEMBED_MODALITY_ON = 10,
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XEMBED_MODALITY_OFF = 11,
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XEMBED_REGISTER_ACCELERATOR = 12,
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XEMBED_UNREGISTER_ACCELERATOR = 13,
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XEMBED_ACTIVATE_ACCELERATOR = 14
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};
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enum
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{
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XEMBED_FOCUS_CURRENT = 0,
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XEMBED_FOCUS_FIRST = 1,
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XEMBED_FOCUS_LAST = 2
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};
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//==============================================================================
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class SharedKeyWindow : public ReferenceCountedObject
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{
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public:
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using Ptr = ReferenceCountedObjectPtr<SharedKeyWindow>;
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//==============================================================================
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Window getHandle() { return keyProxy; }
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static Window getCurrentFocusWindow (ComponentPeer* peerToLookFor)
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{
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auto& keyWindows = getKeyWindows();
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if (peerToLookFor != nullptr)
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if (auto* foundKeyWindow = keyWindows[peerToLookFor])
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return foundKeyWindow->keyProxy;
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return {};
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}
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static SharedKeyWindow::Ptr getKeyWindowForPeer (ComponentPeer* peerToLookFor)
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{
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jassert (peerToLookFor != nullptr);
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auto& keyWindows = getKeyWindows();
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auto foundKeyWindow = keyWindows[peerToLookFor];
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if (foundKeyWindow == nullptr)
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{
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foundKeyWindow = new SharedKeyWindow (peerToLookFor);
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keyWindows.set (peerToLookFor, foundKeyWindow);
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}
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return foundKeyWindow;
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}
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private:
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//==============================================================================
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friend struct ContainerDeletePolicy<SharedKeyWindow>;
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SharedKeyWindow (ComponentPeer* peerToUse)
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: keyPeer (peerToUse),
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keyProxy (juce_createKeyProxyWindow (keyPeer))
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{}
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~SharedKeyWindow()
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{
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juce_deleteKeyProxyWindow (keyPeer);
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auto& keyWindows = getKeyWindows();
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keyWindows.remove (keyPeer);
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}
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ComponentPeer* keyPeer;
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Window keyProxy;
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static HashMap<ComponentPeer*, SharedKeyWindow*>& getKeyWindows()
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{
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// store a weak reference to the shared key windows
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static HashMap<ComponentPeer*, SharedKeyWindow*> keyWindows;
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return keyWindows;
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}
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};
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public:
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//==============================================================================
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Pimpl (XEmbedComponent& parent, Window x11Window,
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bool wantsKeyboardFocus, bool isClientInitiated, bool shouldAllowResize)
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: owner (parent), atoms (x11display.display), clientInitiated (isClientInitiated),
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wantsFocus (wantsKeyboardFocus), allowResize (shouldAllowResize)
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{
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getWidgets().add (this);
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createHostWindow();
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if (clientInitiated)
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setClient (x11Window, true);
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owner.setWantsKeyboardFocus (wantsFocus);
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owner.addComponentListener (this);
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}
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~Pimpl()
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{
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owner.removeComponentListener (this);
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setClient (0, true);
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if (host != 0)
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{
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auto dpy = getDisplay();
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XDestroyWindow (dpy, host);
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XSync (dpy, false);
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const long mask = NoEventMask | KeyPressMask | KeyReleaseMask
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| EnterWindowMask | LeaveWindowMask | PointerMotionMask
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| KeymapStateMask | ExposureMask | StructureNotifyMask
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| FocusChangeMask;
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XEvent event;
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while (XCheckWindowEvent (dpy, host, mask, &event) == True)
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{}
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host = 0;
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}
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getWidgets().removeAllInstancesOf (this);
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}
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//==============================================================================
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void setClient (Window xembedClient, bool shouldReparent)
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{
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removeClient();
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if (xembedClient != 0)
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{
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auto dpy = getDisplay();
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client = xembedClient;
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// if the client has initiated the component then keep the clients size
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// otherwise the client should use the host's window' size
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if (clientInitiated)
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{
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configureNotify();
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}
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else
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{
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auto newBounds = getX11BoundsFromJuce();
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XResizeWindow (dpy, client, static_cast<unsigned int> (newBounds.getWidth()),
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static_cast<unsigned int> (newBounds.getHeight()));
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}
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XSelectInput (dpy, client, StructureNotifyMask | PropertyChangeMask | FocusChangeMask);
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getXEmbedMappedFlag();
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if (shouldReparent)
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XReparentWindow (dpy, client, host, 0, 0);
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if (supportsXembed)
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sendXEmbedEvent (CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0, (long) host, xembedVersion);
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updateMapping();
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}
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}
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void focusGained (FocusChangeType changeType)
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{
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if (client != 0 && supportsXembed && wantsFocus)
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{
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updateKeyFocus();
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sendXEmbedEvent (CurrentTime, XEMBED_FOCUS_IN,
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(changeType == focusChangedByTabKey ? XEMBED_FOCUS_FIRST : XEMBED_FOCUS_CURRENT));
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}
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}
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void focusLost (FocusChangeType)
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{
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if (client != 0 && supportsXembed && wantsFocus)
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{
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sendXEmbedEvent (CurrentTime, XEMBED_FOCUS_OUT);
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updateKeyFocus();
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}
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}
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void broughtToFront()
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{
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if (client != 0 && supportsXembed)
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sendXEmbedEvent (CurrentTime, XEMBED_WINDOW_ACTIVATE);
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}
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unsigned long getHostWindowID()
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{
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// You are using the client initiated version of the protocol. You cannot
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// retrieve the window id of the host. Please read the documentation for
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// the XEmebedComponent class.
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jassert (! clientInitiated);
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return host;
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}
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private:
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//==============================================================================
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XEmbedComponent& owner;
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Window client = 0, host = 0;
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ScopedXDisplay x11display;
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Atoms atoms;
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bool clientInitiated;
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bool wantsFocus = false;
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bool allowResize = false;
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bool supportsXembed = false;
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bool hasBeenMapped = false;
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int xembedVersion = maxXEmbedVersionToSupport;
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ComponentPeer* lastPeer = nullptr;
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SharedKeyWindow::Ptr keyWindow;
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//==============================================================================
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void componentParentHierarchyChanged (Component&) override { peerChanged (owner.getPeer()); }
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void componentMovedOrResized (Component&, bool, bool) override
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{
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if (host != 0 && lastPeer != nullptr)
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{
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auto dpy = getDisplay();
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auto newBounds = getX11BoundsFromJuce();
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XWindowAttributes attr;
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if (XGetWindowAttributes (dpy, host, &attr))
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{
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Rectangle<int> currentBounds (attr.x, attr.y, attr.width, attr.height);
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if (currentBounds != newBounds)
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{
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XMoveResizeWindow (dpy, host, newBounds.getX(), newBounds.getY(),
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static_cast<unsigned int> (newBounds.getWidth()),
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static_cast<unsigned int> (newBounds.getHeight()));
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}
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}
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if (client != 0 && XGetWindowAttributes (dpy, client, &attr))
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{
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Rectangle<int> currentBounds (attr.x, attr.y, attr.width, attr.height);
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if ((currentBounds.getWidth() != newBounds.getWidth()
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|| currentBounds.getHeight() != newBounds.getHeight()))
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{
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XMoveResizeWindow (dpy, client, 0, 0,
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static_cast<unsigned int> (newBounds.getWidth()),
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static_cast<unsigned int> (newBounds.getHeight()));
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}
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}
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}
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}
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//==============================================================================
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void createHostWindow()
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{
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auto dpy = getDisplay();
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int defaultScreen = XDefaultScreen (dpy);
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Window root = RootWindow (dpy, defaultScreen);
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XSetWindowAttributes swa;
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swa.border_pixel = 0;
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swa.background_pixmap = None;
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swa.override_redirect = True;
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swa.event_mask = SubstructureNotifyMask | StructureNotifyMask | FocusChangeMask;
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host = XCreateWindow (dpy, root, 0, 0, 1, 1, 0, CopyFromParent,
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InputOutput, CopyFromParent,
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CWEventMask | CWBorderPixel | CWBackPixmap | CWOverrideRedirect,
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&swa);
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}
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void removeClient()
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{
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if (client != 0)
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{
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auto dpy = getDisplay();
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XSelectInput (dpy, client, 0);
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keyWindow = nullptr;
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int defaultScreen = XDefaultScreen (dpy);
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Window root = RootWindow (dpy, defaultScreen);
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if (hasBeenMapped)
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{
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XUnmapWindow (dpy, client);
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hasBeenMapped = false;
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}
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XReparentWindow (dpy, client, root, 0, 0);
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client = 0;
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}
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}
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void updateMapping()
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{
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if (client != 0)
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{
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const bool shouldBeMapped = getXEmbedMappedFlag();
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if (shouldBeMapped != hasBeenMapped)
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{
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hasBeenMapped = shouldBeMapped;
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if (shouldBeMapped)
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XMapWindow (getDisplay(), client);
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else
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XUnmapWindow (getDisplay(), client);
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}
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}
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}
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Window getParentX11Window()
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{
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if (auto peer = owner.getPeer())
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return reinterpret_cast<Window> (peer->getNativeHandle());
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return {};
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}
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Display* getDisplay() { return reinterpret_cast<Display*> (x11display.display); }
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//==============================================================================
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bool getXEmbedMappedFlag()
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{
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GetXProperty embedInfo (x11display.display, client, atoms.XembedInfo, 0, 2, false, atoms.XembedInfo);
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if (embedInfo.success && embedInfo.actualFormat == 32
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&& embedInfo.numItems >= 2 && embedInfo.data != nullptr)
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{
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auto* buffer = (long*) embedInfo.data;
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supportsXembed = true;
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xembedVersion = jmin ((int) maxXEmbedVersionToSupport, (int) buffer[0]);
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return ((buffer[1] & XEMBED_MAPPED) != 0);
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}
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else
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{
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supportsXembed = false;
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xembedVersion = maxXEmbedVersionToSupport;
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}
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return true;
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}
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//==============================================================================
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void propertyChanged (const Atom& a)
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{
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if (a == atoms.XembedInfo)
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updateMapping();
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}
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void configureNotify()
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{
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XWindowAttributes attr;
|
||
|
|
auto dpy = getDisplay();
|
||
|
|
|
||
|
|
if (XGetWindowAttributes (dpy, client, &attr))
|
||
|
|
{
|
||
|
|
XWindowAttributes hostAttr;
|
||
|
|
|
||
|
|
if (XGetWindowAttributes (dpy, host, &hostAttr))
|
||
|
|
if (attr.width != hostAttr.width || attr.height != hostAttr.height)
|
||
|
|
XResizeWindow (dpy, host, (unsigned int) attr.width, (unsigned int) attr.height);
|
||
|
|
|
||
|
|
// as the client window is not on any screen yet, we need to guess
|
||
|
|
// on which screen it might appear to get a scaling factor :-(
|
||
|
|
auto& displays = Desktop::getInstance().getDisplays();
|
||
|
|
auto* peer = owner.getPeer();
|
||
|
|
const double scale = (peer != nullptr ? displays.getDisplayContaining (peer->getBounds().getCentre())
|
||
|
|
: displays.getMainDisplay()).scale;
|
||
|
|
|
||
|
|
Point<int> topLeftInPeer
|
||
|
|
= (peer != nullptr ? peer->getComponent().getLocalPoint (&owner, Point<int> (0, 0))
|
||
|
|
: owner.getBounds().getTopLeft());
|
||
|
|
|
||
|
|
Rectangle<int> newBounds (topLeftInPeer.getX(), topLeftInPeer.getY(),
|
||
|
|
static_cast<int> (static_cast<double> (attr.width) / scale),
|
||
|
|
static_cast<int> (static_cast<double> (attr.height) / scale));
|
||
|
|
|
||
|
|
|
||
|
|
if (peer != nullptr)
|
||
|
|
newBounds = owner.getLocalArea (&peer->getComponent(), newBounds);
|
||
|
|
|
||
|
|
jassert (newBounds.getX() == 0 && newBounds.getY() == 0);
|
||
|
|
|
||
|
|
if (newBounds != owner.getLocalBounds())
|
||
|
|
owner.setSize (newBounds.getWidth(), newBounds.getHeight());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void peerChanged (ComponentPeer* newPeer)
|
||
|
|
{
|
||
|
|
if (newPeer != lastPeer)
|
||
|
|
{
|
||
|
|
if (lastPeer != nullptr)
|
||
|
|
keyWindow = nullptr;
|
||
|
|
|
||
|
|
auto dpy = getDisplay();
|
||
|
|
Window rootWindow = RootWindow (dpy, DefaultScreen (dpy));
|
||
|
|
Rectangle<int> newBounds = getX11BoundsFromJuce();
|
||
|
|
|
||
|
|
if (newPeer == nullptr)
|
||
|
|
XUnmapWindow (dpy, host);
|
||
|
|
|
||
|
|
Window newParent = (newPeer != nullptr ? getParentX11Window() : rootWindow);
|
||
|
|
XReparentWindow (dpy, host, newParent, newBounds.getX(), newBounds.getY());
|
||
|
|
|
||
|
|
lastPeer = newPeer;
|
||
|
|
|
||
|
|
if (newPeer != nullptr)
|
||
|
|
{
|
||
|
|
if (wantsFocus)
|
||
|
|
{
|
||
|
|
keyWindow = SharedKeyWindow::getKeyWindowForPeer (newPeer);
|
||
|
|
updateKeyFocus();
|
||
|
|
}
|
||
|
|
|
||
|
|
componentMovedOrResized (owner, true, true);
|
||
|
|
XMapWindow (dpy, host);
|
||
|
|
|
||
|
|
broughtToFront();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void updateKeyFocus()
|
||
|
|
{
|
||
|
|
if (lastPeer != nullptr && lastPeer->isFocused())
|
||
|
|
XSetInputFocus (getDisplay(), getCurrentFocusWindow (lastPeer), RevertToParent, CurrentTime);
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void handleXembedCmd (const ::Time& /*xTime*/, long opcode, long /*detail*/, long /*data1*/, long /*data2*/)
|
||
|
|
{
|
||
|
|
switch (opcode)
|
||
|
|
{
|
||
|
|
case XEMBED_REQUEST_FOCUS:
|
||
|
|
if (wantsFocus)
|
||
|
|
owner.grabKeyboardFocus();
|
||
|
|
break;
|
||
|
|
|
||
|
|
case XEMBED_FOCUS_NEXT:
|
||
|
|
if (wantsFocus)
|
||
|
|
owner.moveKeyboardFocusToSibling (true);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case XEMBED_FOCUS_PREV:
|
||
|
|
if (wantsFocus)
|
||
|
|
owner.moveKeyboardFocusToSibling (false);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool handleX11Event (const XEvent& e)
|
||
|
|
{
|
||
|
|
if (e.xany.window == client && client != 0)
|
||
|
|
{
|
||
|
|
switch (e.type)
|
||
|
|
{
|
||
|
|
case PropertyNotify:
|
||
|
|
propertyChanged (e.xproperty.atom);
|
||
|
|
return true;
|
||
|
|
|
||
|
|
case ConfigureNotify:
|
||
|
|
if (allowResize)
|
||
|
|
configureNotify();
|
||
|
|
else
|
||
|
|
MessageManager::callAsync ([this] {componentMovedOrResized (owner, true, true);});
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (e.xany.window == host && host != 0)
|
||
|
|
{
|
||
|
|
switch (e.type)
|
||
|
|
{
|
||
|
|
case ReparentNotify:
|
||
|
|
if (e.xreparent.parent == host && e.xreparent.window != client)
|
||
|
|
{
|
||
|
|
setClient (e.xreparent.window, false);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case CreateNotify:
|
||
|
|
if (e.xcreatewindow.parent != e.xcreatewindow.window && e.xcreatewindow.parent == host && e.xcreatewindow.window != client)
|
||
|
|
{
|
||
|
|
setClient (e.xcreatewindow.window, false);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case GravityNotify:
|
||
|
|
componentMovedOrResized (owner, true, true);
|
||
|
|
return true;
|
||
|
|
|
||
|
|
case ClientMessage:
|
||
|
|
if (e.xclient.message_type == atoms.XembedMsgType && e.xclient.format == 32)
|
||
|
|
{
|
||
|
|
handleXembedCmd ((::Time) e.xclient.data.l[0], e.xclient.data.l[1],
|
||
|
|
e.xclient.data.l[2], e.xclient.data.l[3],
|
||
|
|
e.xclient.data.l[4]);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void sendXEmbedEvent (const ::Time& xTime, long opcode,
|
||
|
|
long opcodeMinor = 0, long data1 = 0, long data2 = 0)
|
||
|
|
{
|
||
|
|
XClientMessageEvent msg;
|
||
|
|
auto dpy = getDisplay();
|
||
|
|
|
||
|
|
::memset (&msg, 0, sizeof (XClientMessageEvent));
|
||
|
|
msg.window = client;
|
||
|
|
msg.type = ClientMessage;
|
||
|
|
msg.message_type = atoms.XembedMsgType;
|
||
|
|
msg.format = 32;
|
||
|
|
msg.data.l[0] = (long) xTime;
|
||
|
|
msg.data.l[1] = opcode;
|
||
|
|
msg.data.l[2] = opcodeMinor;
|
||
|
|
msg.data.l[3] = data1;
|
||
|
|
msg.data.l[4] = data2;
|
||
|
|
|
||
|
|
XSendEvent (dpy, client, False, NoEventMask, (XEvent*) &msg);
|
||
|
|
XSync (dpy, False);
|
||
|
|
}
|
||
|
|
|
||
|
|
Rectangle<int> getX11BoundsFromJuce()
|
||
|
|
{
|
||
|
|
if (auto* peer = owner.getPeer())
|
||
|
|
{
|
||
|
|
auto r = peer->getComponent().getLocalArea (&owner, owner.getLocalBounds());
|
||
|
|
auto scale = Desktop::getInstance().getDisplays().getDisplayContaining (peer->localToGlobal (r.getCentre())).scale;
|
||
|
|
|
||
|
|
return r * scale;
|
||
|
|
}
|
||
|
|
|
||
|
|
return owner.getLocalBounds();
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
friend bool juce::juce_handleXEmbedEvent (ComponentPeer*, void*);
|
||
|
|
friend unsigned long juce::juce_getCurrentFocusWindow (ComponentPeer*);
|
||
|
|
|
||
|
|
static Array<Pimpl*>& getWidgets()
|
||
|
|
{
|
||
|
|
static Array<Pimpl*> i;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool dispatchX11Event (ComponentPeer* p, const XEvent* eventArg)
|
||
|
|
{
|
||
|
|
if (eventArg != nullptr)
|
||
|
|
{
|
||
|
|
auto& e = *eventArg;
|
||
|
|
|
||
|
|
if (auto w = e.xany.window)
|
||
|
|
for (auto* widget : getWidgets())
|
||
|
|
if (w == widget->host || w == widget->client)
|
||
|
|
return widget->handleX11Event (e);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
for (auto* widget : getWidgets())
|
||
|
|
if (widget->owner.getPeer() == p)
|
||
|
|
widget->peerChanged (nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
static Window getCurrentFocusWindow (ComponentPeer* p)
|
||
|
|
{
|
||
|
|
if (p != nullptr)
|
||
|
|
{
|
||
|
|
for (auto* widget : getWidgets())
|
||
|
|
if (widget->owner.getPeer() == p && widget->owner.hasKeyboardFocus (false))
|
||
|
|
return widget->client;
|
||
|
|
}
|
||
|
|
|
||
|
|
return SharedKeyWindow::getCurrentFocusWindow (p);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
XEmbedComponent::XEmbedComponent (bool wantsKeyboardFocus, bool allowForeignWidgetToResizeComponent)
|
||
|
|
: pimpl (new Pimpl (*this, 0, wantsKeyboardFocus, false, allowForeignWidgetToResizeComponent))
|
||
|
|
{
|
||
|
|
setOpaque (true);
|
||
|
|
}
|
||
|
|
|
||
|
|
XEmbedComponent::XEmbedComponent (unsigned long wID, bool wantsKeyboardFocus, bool allowForeignWidgetToResizeComponent)
|
||
|
|
: pimpl (new Pimpl (*this, wID, wantsKeyboardFocus, true, allowForeignWidgetToResizeComponent))
|
||
|
|
{
|
||
|
|
setOpaque (true);
|
||
|
|
}
|
||
|
|
|
||
|
|
XEmbedComponent::~XEmbedComponent() {}
|
||
|
|
|
||
|
|
void XEmbedComponent::paint (Graphics& g)
|
||
|
|
{
|
||
|
|
g.fillAll (Colours::lightgrey);
|
||
|
|
}
|
||
|
|
|
||
|
|
void XEmbedComponent::focusGained (FocusChangeType changeType) { pimpl->focusGained (changeType); }
|
||
|
|
void XEmbedComponent::focusLost (FocusChangeType changeType) { pimpl->focusLost (changeType); }
|
||
|
|
void XEmbedComponent::broughtToFront() { pimpl->broughtToFront(); }
|
||
|
|
unsigned long XEmbedComponent::getHostWindowID() { return pimpl->getHostWindowID(); }
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
bool juce_handleXEmbedEvent (ComponentPeer* p, void* e)
|
||
|
|
{
|
||
|
|
return XEmbedComponent::Pimpl::dispatchX11Event (p, reinterpret_cast<const XEvent*> (e));
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned long juce_getCurrentFocusWindow (ComponentPeer* peer)
|
||
|
|
{
|
||
|
|
return (unsigned long) XEmbedComponent::Pimpl::getCurrentFocusWindow (peer);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace juce
|