488 lines
19 KiB
C++
488 lines
19 KiB
C++
/*
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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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extern int64 getMouseEventTime();
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JUCE_DECLARE_UUID_GETTER (IOleObject, "00000112-0000-0000-C000-000000000046")
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JUCE_DECLARE_UUID_GETTER (IOleWindow, "00000114-0000-0000-C000-000000000046")
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JUCE_DECLARE_UUID_GETTER (IOleInPlaceSite, "00000119-0000-0000-C000-000000000046")
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namespace ActiveXHelpers
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{
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//==============================================================================
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struct JuceIStorage : public ComBaseClassHelper<IStorage>
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{
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JuceIStorage() {}
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JUCE_COMRESULT CreateStream (const WCHAR*, DWORD, DWORD, DWORD, IStream**) { return E_NOTIMPL; }
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JUCE_COMRESULT OpenStream (const WCHAR*, void*, DWORD, DWORD, IStream**) { return E_NOTIMPL; }
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JUCE_COMRESULT CreateStorage (const WCHAR*, DWORD, DWORD, DWORD, IStorage**) { return E_NOTIMPL; }
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JUCE_COMRESULT OpenStorage (const WCHAR*, IStorage*, DWORD, SNB, DWORD, IStorage**) { return E_NOTIMPL; }
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JUCE_COMRESULT CopyTo (DWORD, IID const*, SNB, IStorage*) { return E_NOTIMPL; }
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JUCE_COMRESULT MoveElementTo (const OLECHAR*,IStorage*, const OLECHAR*, DWORD) { return E_NOTIMPL; }
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JUCE_COMRESULT Commit (DWORD) { return E_NOTIMPL; }
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JUCE_COMRESULT Revert() { return E_NOTIMPL; }
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JUCE_COMRESULT EnumElements (DWORD, void*, DWORD, IEnumSTATSTG**) { return E_NOTIMPL; }
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JUCE_COMRESULT DestroyElement (const OLECHAR*) { return E_NOTIMPL; }
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JUCE_COMRESULT RenameElement (const WCHAR*, const WCHAR*) { return E_NOTIMPL; }
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JUCE_COMRESULT SetElementTimes (const WCHAR*, FILETIME const*, FILETIME const*, FILETIME const*) { return E_NOTIMPL; }
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JUCE_COMRESULT SetClass (REFCLSID) { return S_OK; }
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JUCE_COMRESULT SetStateBits (DWORD, DWORD) { return E_NOTIMPL; }
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JUCE_COMRESULT Stat (STATSTG*, DWORD) { return E_NOTIMPL; }
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};
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//==============================================================================
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struct JuceOleInPlaceFrame : public ComBaseClassHelper<IOleInPlaceFrame>
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{
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JuceOleInPlaceFrame (HWND hwnd) : window (hwnd) {}
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JUCE_COMRESULT GetWindow (HWND* lphwnd) { *lphwnd = window; return S_OK; }
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JUCE_COMRESULT ContextSensitiveHelp (BOOL) { return E_NOTIMPL; }
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JUCE_COMRESULT GetBorder (LPRECT) { return E_NOTIMPL; }
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JUCE_COMRESULT RequestBorderSpace (LPCBORDERWIDTHS) { return E_NOTIMPL; }
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JUCE_COMRESULT SetBorderSpace (LPCBORDERWIDTHS) { return E_NOTIMPL; }
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JUCE_COMRESULT SetActiveObject (IOleInPlaceActiveObject* a, LPCOLESTR) { activeObject = a; return S_OK; }
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JUCE_COMRESULT InsertMenus (HMENU, LPOLEMENUGROUPWIDTHS) { return E_NOTIMPL; }
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JUCE_COMRESULT SetMenu (HMENU, HOLEMENU, HWND) { return S_OK; }
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JUCE_COMRESULT RemoveMenus (HMENU) { return E_NOTIMPL; }
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JUCE_COMRESULT SetStatusText (LPCOLESTR) { return S_OK; }
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JUCE_COMRESULT EnableModeless (BOOL) { return S_OK; }
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JUCE_COMRESULT TranslateAccelerator (LPMSG, WORD) { return E_NOTIMPL; }
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HRESULT OfferKeyTranslation (LPMSG lpmsg)
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{
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if (activeObject != nullptr)
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return activeObject->TranslateAcceleratorW (lpmsg);
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return S_FALSE;
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}
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HWND window;
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ComSmartPtr<IOleInPlaceActiveObject> activeObject;
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};
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//==============================================================================
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struct JuceIOleInPlaceSite : public ComBaseClassHelper<IOleInPlaceSite>
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{
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JuceIOleInPlaceSite (HWND hwnd)
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: window (hwnd),
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frame (new JuceOleInPlaceFrame (window))
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{}
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~JuceIOleInPlaceSite()
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{
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frame->Release();
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}
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JUCE_COMRESULT GetWindow (HWND* lphwnd) { *lphwnd = window; return S_OK; }
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JUCE_COMRESULT ContextSensitiveHelp (BOOL) { return E_NOTIMPL; }
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JUCE_COMRESULT CanInPlaceActivate() { return S_OK; }
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JUCE_COMRESULT OnInPlaceActivate() { return S_OK; }
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JUCE_COMRESULT OnUIActivate() { return S_OK; }
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JUCE_COMRESULT GetWindowContext (LPOLEINPLACEFRAME* lplpFrame, LPOLEINPLACEUIWINDOW* lplpDoc, LPRECT, LPRECT, LPOLEINPLACEFRAMEINFO lpFrameInfo)
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{
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/* Note: If you call AddRef on the frame here, then some types of object (e.g. web browser control) cause leaks..
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If you don't call AddRef then others crash (e.g. QuickTime).. Bit of a catch-22, so letting it leak is probably preferable.
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*/
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if (lplpFrame != nullptr) { frame->AddRef(); *lplpFrame = frame; }
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if (lplpDoc != nullptr) *lplpDoc = nullptr;
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lpFrameInfo->fMDIApp = FALSE;
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lpFrameInfo->hwndFrame = window;
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lpFrameInfo->haccel = 0;
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lpFrameInfo->cAccelEntries = 0;
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return S_OK;
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}
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JUCE_COMRESULT Scroll (SIZE) { return E_NOTIMPL; }
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JUCE_COMRESULT OnUIDeactivate (BOOL) { return S_OK; }
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JUCE_COMRESULT OnInPlaceDeactivate() { return S_OK; }
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JUCE_COMRESULT DiscardUndoState() { return E_NOTIMPL; }
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JUCE_COMRESULT DeactivateAndUndo() { return E_NOTIMPL; }
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JUCE_COMRESULT OnPosRectChange (LPCRECT) { return S_OK; }
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LRESULT offerEventToActiveXControl (::MSG& msg)
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{
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if (frame != nullptr)
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return frame->OfferKeyTranslation (&msg);
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return S_FALSE;
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}
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HWND window;
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JuceOleInPlaceFrame* frame;
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};
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//==============================================================================
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struct JuceIOleClientSite : public ComBaseClassHelper<IOleClientSite>
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{
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JuceIOleClientSite (HWND window) : inplaceSite (new JuceIOleInPlaceSite (window))
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{}
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~JuceIOleClientSite()
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{
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inplaceSite->Release();
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}
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JUCE_COMRESULT QueryInterface (REFIID type, void** result)
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{
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if (type == __uuidof (IOleInPlaceSite))
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{
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inplaceSite->AddRef();
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*result = static_cast<IOleInPlaceSite*> (inplaceSite);
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return S_OK;
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}
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return ComBaseClassHelper <IOleClientSite>::QueryInterface (type, result);
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}
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JUCE_COMRESULT SaveObject() { return E_NOTIMPL; }
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JUCE_COMRESULT GetMoniker (DWORD, DWORD, IMoniker**) { return E_NOTIMPL; }
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JUCE_COMRESULT GetContainer (LPOLECONTAINER* ppContainer) { *ppContainer = nullptr; return E_NOINTERFACE; }
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JUCE_COMRESULT ShowObject() { return S_OK; }
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JUCE_COMRESULT OnShowWindow (BOOL) { return E_NOTIMPL; }
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JUCE_COMRESULT RequestNewObjectLayout() { return E_NOTIMPL; }
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LRESULT offerEventToActiveXControl (::MSG& msg)
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{
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if (inplaceSite != nullptr)
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return inplaceSite->offerEventToActiveXControl (msg);
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return S_FALSE;
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}
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JuceIOleInPlaceSite* inplaceSite;
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};
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//==============================================================================
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static Array<ActiveXControlComponent*> activeXComps;
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static inline HWND getHWND (const ActiveXControlComponent* const component)
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{
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HWND hwnd = {};
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const IID iid = __uuidof (IOleWindow);
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if (auto* window = (IOleWindow*) component->queryInterface (&iid))
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{
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window->GetWindow (&hwnd);
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window->Release();
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}
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return hwnd;
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}
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static inline void offerActiveXMouseEventToPeer (ComponentPeer* peer, HWND hwnd, UINT message, LPARAM lParam)
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{
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switch (message)
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{
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case WM_MOUSEMOVE:
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case WM_LBUTTONDOWN:
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case WM_MBUTTONDOWN:
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case WM_RBUTTONDOWN:
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case WM_LBUTTONUP:
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case WM_MBUTTONUP:
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case WM_RBUTTONUP:
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{
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RECT activeXRect, peerRect;
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GetWindowRect (hwnd, &activeXRect);
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GetWindowRect ((HWND) peer->getNativeHandle(), &peerRect);
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peer->handleMouseEvent (MouseInputSource::InputSourceType::mouse,
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{ (float) (GET_X_LPARAM (lParam) + activeXRect.left - peerRect.left),
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(float) (GET_Y_LPARAM (lParam) + activeXRect.top - peerRect.top) },
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ComponentPeer::getCurrentModifiersRealtime(),
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MouseInputSource::invalidPressure,
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MouseInputSource::invalidOrientation,
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getMouseEventTime());
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break;
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}
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default:
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break;
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}
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}
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}
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//==============================================================================
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class ActiveXControlComponent::Pimpl : public ComponentMovementWatcher
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#if JUCE_WIN_PER_MONITOR_DPI_AWARE
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, public ComponentPeer::ScaleFactorListener
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#endif
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{
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public:
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Pimpl (HWND hwnd, ActiveXControlComponent& activeXComp)
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: ComponentMovementWatcher (&activeXComp),
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owner (activeXComp),
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storage (new ActiveXHelpers::JuceIStorage()),
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clientSite (new ActiveXHelpers::JuceIOleClientSite (hwnd))
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{
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}
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~Pimpl()
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{
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if (control != nullptr)
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{
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control->Close (OLECLOSE_NOSAVE);
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control->Release();
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}
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clientSite->Release();
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storage->Release();
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#if JUCE_WIN_PER_MONITOR_DPI_AWARE
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for (int i = 0; i < ComponentPeer::getNumPeers(); ++i)
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if (auto* peer = ComponentPeer::getPeer (i))
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peer->removeScaleFactorListener (this);
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#endif
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}
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void setControlBounds (Rectangle<int> newBounds) const
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{
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if (controlHWND != 0)
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{
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#if JUCE_WIN_PER_MONITOR_DPI_AWARE
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if (auto* peer = owner.getTopLevelComponent()->getPeer())
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newBounds = (newBounds.toDouble() * peer->getPlatformScaleFactor()).toNearestInt();
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#endif
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MoveWindow (controlHWND, newBounds.getX(), newBounds.getY(), newBounds.getWidth(), newBounds.getHeight(), TRUE);
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}
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}
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void setControlVisible (bool shouldBeVisible) const
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{
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if (controlHWND != 0)
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ShowWindow (controlHWND, shouldBeVisible ? SW_SHOWNA : SW_HIDE);
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}
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//==============================================================================
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void componentMovedOrResized (bool /*wasMoved*/, bool /*wasResized*/) override
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{
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if (auto* peer = owner.getTopLevelComponent()->getPeer())
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setControlBounds (peer->getAreaCoveredBy (owner));
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}
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void componentPeerChanged() override
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{
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componentMovedOrResized (true, true);
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#if JUCE_WIN_PER_MONITOR_DPI_AWARE
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if (auto* peer = owner.getTopLevelComponent()->getPeer())
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peer->addScaleFactorListener (this);
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#endif
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}
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void componentVisibilityChanged() override
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{
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setControlVisible (owner.isShowing());
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componentPeerChanged();
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}
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#if JUCE_WIN_PER_MONITOR_DPI_AWARE
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void nativeScaleFactorChanged (double /*newScaleFactor*/) override
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{
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componentMovedOrResized (true, true);
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}
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#endif
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// intercepts events going to an activeX control, so we can sneakily use the mouse events
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static LRESULT CALLBACK activeXHookWndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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for (auto* ax : ActiveXHelpers::activeXComps)
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{
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if (ax->control != nullptr && ax->control->controlHWND == hwnd)
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{
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switch (message)
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{
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case WM_MOUSEMOVE:
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case WM_LBUTTONDOWN:
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case WM_MBUTTONDOWN:
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case WM_RBUTTONDOWN:
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case WM_LBUTTONUP:
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case WM_MBUTTONUP:
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case WM_RBUTTONUP:
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case WM_LBUTTONDBLCLK:
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case WM_MBUTTONDBLCLK:
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case WM_RBUTTONDBLCLK:
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if (ax->isShowing())
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{
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if (auto* peer = ax->getPeer())
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{
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ActiveXHelpers::offerActiveXMouseEventToPeer (peer, hwnd, message, lParam);
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if (! ax->areMouseEventsAllowed())
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return 0;
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}
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}
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break;
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default:
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break;
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}
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return CallWindowProc (ax->control->originalWndProc, hwnd, message, wParam, lParam);
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}
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}
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return DefWindowProc (hwnd, message, wParam, lParam);
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}
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ActiveXControlComponent& owner;
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HWND controlHWND = {};
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IStorage* storage = nullptr;
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ActiveXHelpers::JuceIOleClientSite* clientSite = nullptr;
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IOleObject* control = nullptr;
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WNDPROC originalWndProc = 0;
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};
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//==============================================================================
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ActiveXControlComponent::ActiveXControlComponent()
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{
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ActiveXHelpers::activeXComps.add (this);
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}
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ActiveXControlComponent::~ActiveXControlComponent()
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{
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deleteControl();
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ActiveXHelpers::activeXComps.removeFirstMatchingValue (this);
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}
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void ActiveXControlComponent::paint (Graphics& g)
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{
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if (control == nullptr)
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g.fillAll (Colours::lightgrey);
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}
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bool ActiveXControlComponent::createControl (const void* controlIID)
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{
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deleteControl();
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if (auto* peer = getPeer())
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{
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auto controlBounds = peer->getAreaCoveredBy (*this);
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auto hwnd = (HWND) peer->getNativeHandle();
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std::unique_ptr<Pimpl> newControl (new Pimpl (hwnd, *this));
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HRESULT hr = OleCreate (*(const IID*) controlIID, __uuidof (IOleObject), 1 /*OLERENDER_DRAW*/, 0,
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newControl->clientSite, newControl->storage,
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(void**) &(newControl->control));
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if (hr == S_OK)
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{
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newControl->control->SetHostNames (L"JUCE", 0);
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if (OleSetContainedObject (newControl->control, TRUE) == S_OK)
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{
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RECT rect;
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rect.left = controlBounds.getX();
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rect.top = controlBounds.getY();
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rect.right = controlBounds.getRight();
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rect.bottom = controlBounds.getBottom();
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if (newControl->control->DoVerb (OLEIVERB_SHOW, 0, newControl->clientSite, 0, hwnd, &rect) == S_OK)
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{
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control.reset (newControl.release());
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control->controlHWND = ActiveXHelpers::getHWND (this);
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if (control->controlHWND != 0)
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{
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control->setControlBounds (controlBounds);
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control->originalWndProc = (WNDPROC) GetWindowLongPtr ((HWND) control->controlHWND, GWLP_WNDPROC);
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SetWindowLongPtr ((HWND) control->controlHWND, GWLP_WNDPROC, (LONG_PTR) Pimpl::activeXHookWndProc);
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}
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return true;
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}
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}
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}
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}
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else
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{
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// the component must have already been added to a real window when you call this!
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jassertfalse;
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}
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return false;
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}
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void ActiveXControlComponent::deleteControl()
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{
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control = nullptr;
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}
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void* ActiveXControlComponent::queryInterface (const void* iid) const
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{
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void* result = nullptr;
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if (control != nullptr && control->control != nullptr
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&& SUCCEEDED (control->control->QueryInterface (*(const IID*) iid, &result)))
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return result;
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return nullptr;
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}
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void ActiveXControlComponent::setMouseEventsAllowed (const bool eventsCanReachControl)
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{
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mouseEventsAllowed = eventsCanReachControl;
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}
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intptr_t ActiveXControlComponent::offerEventToActiveXControl (void* ptr)
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{
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if (control != nullptr && control->clientSite != nullptr)
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return (intptr_t) control->clientSite->offerEventToActiveXControl (*reinterpret_cast<::MSG*> (ptr));
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return S_FALSE;
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}
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intptr_t ActiveXControlComponent::offerEventToActiveXControlStatic (void* ptr)
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{
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for (auto* ax : ActiveXHelpers::activeXComps)
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{
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auto result = ax->offerEventToActiveXControl (ptr);
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if (result != S_FALSE)
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return result;
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}
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return S_FALSE;
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}
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LRESULT juce_offerEventToActiveXControl (::MSG& msg)
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{
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if (msg.message >= WM_KEYFIRST && msg.message <= WM_KEYLAST)
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return ActiveXControlComponent::offerEventToActiveXControlStatic (&msg);
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return S_FALSE;
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}
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} // namespace juce
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