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dexed/JuceLibraryCode/modules/juce_gui_extra/native/juce_win32_ActiveXComponent...

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11 years ago
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2013 - Raw Material Software Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
extern int64 getMouseEventTime();
namespace ActiveXHelpers
{
//==============================================================================
class JuceIStorage : public ComBaseClassHelper <IStorage>
{
public:
JuceIStorage() {}
JUCE_COMRESULT CreateStream (const WCHAR*, DWORD, DWORD, DWORD, IStream**) { return E_NOTIMPL; }
JUCE_COMRESULT OpenStream (const WCHAR*, void*, DWORD, DWORD, IStream**) { return E_NOTIMPL; }
JUCE_COMRESULT CreateStorage (const WCHAR*, DWORD, DWORD, DWORD, IStorage**) { return E_NOTIMPL; }
JUCE_COMRESULT OpenStorage (const WCHAR*, IStorage*, DWORD, SNB, DWORD, IStorage**) { return E_NOTIMPL; }
JUCE_COMRESULT CopyTo (DWORD, IID const*, SNB, IStorage*) { return E_NOTIMPL; }
JUCE_COMRESULT MoveElementTo (const OLECHAR*,IStorage*, const OLECHAR*, DWORD) { return E_NOTIMPL; }
JUCE_COMRESULT Commit (DWORD) { return E_NOTIMPL; }
JUCE_COMRESULT Revert() { return E_NOTIMPL; }
JUCE_COMRESULT EnumElements (DWORD, void*, DWORD, IEnumSTATSTG**) { return E_NOTIMPL; }
JUCE_COMRESULT DestroyElement (const OLECHAR*) { return E_NOTIMPL; }
JUCE_COMRESULT RenameElement (const WCHAR*, const WCHAR*) { return E_NOTIMPL; }
JUCE_COMRESULT SetElementTimes (const WCHAR*, FILETIME const*, FILETIME const*, FILETIME const*) { return E_NOTIMPL; }
JUCE_COMRESULT SetClass (REFCLSID) { return S_OK; }
JUCE_COMRESULT SetStateBits (DWORD, DWORD) { return E_NOTIMPL; }
JUCE_COMRESULT Stat (STATSTG*, DWORD) { return E_NOTIMPL; }
};
//==============================================================================
class JuceOleInPlaceFrame : public ComBaseClassHelper <IOleInPlaceFrame>
{
public:
JuceOleInPlaceFrame (HWND hwnd) : window (hwnd) {}
JUCE_COMRESULT GetWindow (HWND* lphwnd) { *lphwnd = window; return S_OK; }
JUCE_COMRESULT ContextSensitiveHelp (BOOL) { return E_NOTIMPL; }
JUCE_COMRESULT GetBorder (LPRECT) { return E_NOTIMPL; }
JUCE_COMRESULT RequestBorderSpace (LPCBORDERWIDTHS) { return E_NOTIMPL; }
JUCE_COMRESULT SetBorderSpace (LPCBORDERWIDTHS) { return E_NOTIMPL; }
JUCE_COMRESULT SetActiveObject (IOleInPlaceActiveObject*, LPCOLESTR) { return S_OK; }
JUCE_COMRESULT InsertMenus (HMENU, LPOLEMENUGROUPWIDTHS) { return E_NOTIMPL; }
JUCE_COMRESULT SetMenu (HMENU, HOLEMENU, HWND) { return S_OK; }
JUCE_COMRESULT RemoveMenus (HMENU) { return E_NOTIMPL; }
JUCE_COMRESULT SetStatusText (LPCOLESTR) { return S_OK; }
JUCE_COMRESULT EnableModeless (BOOL) { return S_OK; }
JUCE_COMRESULT TranslateAccelerator (LPMSG, WORD) { return E_NOTIMPL; }
private:
HWND window;
};
//==============================================================================
class JuceIOleInPlaceSite : public ComBaseClassHelper <IOleInPlaceSite>
{
public:
JuceIOleInPlaceSite (HWND hwnd)
: window (hwnd),
frame (new JuceOleInPlaceFrame (window))
{}
~JuceIOleInPlaceSite()
{
frame->Release();
}
JUCE_COMRESULT GetWindow (HWND* lphwnd) { *lphwnd = window; return S_OK; }
JUCE_COMRESULT ContextSensitiveHelp (BOOL) { return E_NOTIMPL; }
JUCE_COMRESULT CanInPlaceActivate() { return S_OK; }
JUCE_COMRESULT OnInPlaceActivate() { return S_OK; }
JUCE_COMRESULT OnUIActivate() { return S_OK; }
JUCE_COMRESULT GetWindowContext (LPOLEINPLACEFRAME* lplpFrame, LPOLEINPLACEUIWINDOW* lplpDoc, LPRECT, LPRECT, LPOLEINPLACEFRAMEINFO lpFrameInfo)
{
/* Note: if you call AddRef on the frame here, then some types of object (e.g. web browser control) cause leaks..
If you don't call AddRef then others crash (e.g. QuickTime).. Bit of a catch-22, so letting it leak is probably preferable.
*/
if (lplpFrame != nullptr) { frame->AddRef(); *lplpFrame = frame; }
if (lplpDoc != nullptr) *lplpDoc = nullptr;
lpFrameInfo->fMDIApp = FALSE;
lpFrameInfo->hwndFrame = window;
lpFrameInfo->haccel = 0;
lpFrameInfo->cAccelEntries = 0;
return S_OK;
}
JUCE_COMRESULT Scroll (SIZE) { return E_NOTIMPL; }
JUCE_COMRESULT OnUIDeactivate (BOOL) { return S_OK; }
JUCE_COMRESULT OnInPlaceDeactivate() { return S_OK; }
JUCE_COMRESULT DiscardUndoState() { return E_NOTIMPL; }
JUCE_COMRESULT DeactivateAndUndo() { return E_NOTIMPL; }
JUCE_COMRESULT OnPosRectChange (LPCRECT) { return S_OK; }
private:
HWND window;
JuceOleInPlaceFrame* frame;
};
//==============================================================================
class JuceIOleClientSite : public ComBaseClassHelper <IOleClientSite>
{
public:
JuceIOleClientSite (HWND window)
: inplaceSite (new JuceIOleInPlaceSite (window))
{}
~JuceIOleClientSite()
{
inplaceSite->Release();
}
JUCE_COMRESULT QueryInterface (REFIID type, void** result)
{
if (type == IID_IOleInPlaceSite)
{
inplaceSite->AddRef();
*result = static_cast <IOleInPlaceSite*> (inplaceSite);
return S_OK;
}
return ComBaseClassHelper <IOleClientSite>::QueryInterface (type, result);
}
JUCE_COMRESULT SaveObject() { return E_NOTIMPL; }
JUCE_COMRESULT GetMoniker (DWORD, DWORD, IMoniker**) { return E_NOTIMPL; }
JUCE_COMRESULT GetContainer (LPOLECONTAINER* ppContainer) { *ppContainer = nullptr; return E_NOINTERFACE; }
JUCE_COMRESULT ShowObject() { return S_OK; }
JUCE_COMRESULT OnShowWindow (BOOL) { return E_NOTIMPL; }
JUCE_COMRESULT RequestNewObjectLayout() { return E_NOTIMPL; }
private:
JuceIOleInPlaceSite* inplaceSite;
};
//==============================================================================
static Array<ActiveXControlComponent*> activeXComps;
HWND getHWND (const ActiveXControlComponent* const component)
{
HWND hwnd = 0;
const IID iid = IID_IOleWindow;
if (IOleWindow* const window = (IOleWindow*) component->queryInterface (&iid))
{
window->GetWindow (&hwnd);
window->Release();
}
return hwnd;
}
void offerActiveXMouseEventToPeer (ComponentPeer* const peer, HWND hwnd, UINT message, LPARAM lParam)
{
RECT activeXRect, peerRect;
GetWindowRect (hwnd, &activeXRect);
GetWindowRect ((HWND) peer->getNativeHandle(), &peerRect);
switch (message)
{
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
peer->handleMouseEvent (0, Point<int> (GET_X_LPARAM (lParam) + activeXRect.left - peerRect.left,
GET_Y_LPARAM (lParam) + activeXRect.top - peerRect.top),
ModifierKeys::getCurrentModifiersRealtime(),
getMouseEventTime());
break;
default:
break;
}
}
}
//==============================================================================
class ActiveXControlComponent::Pimpl : public ComponentMovementWatcher
{
public:
Pimpl (HWND hwnd, ActiveXControlComponent& activeXComp)
: ComponentMovementWatcher (&activeXComp),
owner (activeXComp),
controlHWND (0),
storage (new ActiveXHelpers::JuceIStorage()),
clientSite (new ActiveXHelpers::JuceIOleClientSite (hwnd)),
control (nullptr),
originalWndProc (0)
{
}
~Pimpl()
{
if (control != nullptr)
{
control->Close (OLECLOSE_NOSAVE);
control->Release();
}
clientSite->Release();
storage->Release();
}
void setControlBounds (const Rectangle<int>& bounds) const
{
if (controlHWND != 0)
MoveWindow (controlHWND, bounds.getX(), bounds.getY(), bounds.getWidth(), bounds.getHeight(), TRUE);
}
void setControlVisible (bool shouldBeVisible) const
{
if (controlHWND != 0)
ShowWindow (controlHWND, shouldBeVisible ? SW_SHOWNA : SW_HIDE);
}
//==============================================================================
void componentMovedOrResized (bool /*wasMoved*/, bool /*wasResized*/) override
{
if (ComponentPeer* const peer = owner.getTopLevelComponent()->getPeer())
setControlBounds (peer->getAreaCoveredBy (owner));
}
void componentPeerChanged() override
{
componentMovedOrResized (true, true);
}
void componentVisibilityChanged() override
{
setControlVisible (owner.isShowing());
componentPeerChanged();
}
// intercepts events going to an activeX control, so we can sneakily use the mouse events
static LRESULT CALLBACK activeXHookWndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
for (int i = ActiveXHelpers::activeXComps.size(); --i >= 0;)
{
const ActiveXControlComponent* const ax = ActiveXHelpers::activeXComps.getUnchecked(i);
if (ax->control != nullptr && ax->control->controlHWND == hwnd)
{
switch (message)
{
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
if (ax->isShowing())
{
if (ComponentPeer* const peer = ax->getPeer())
{
ActiveXHelpers::offerActiveXMouseEventToPeer (peer, hwnd, message, lParam);
if (! ax->areMouseEventsAllowed())
return 0;
}
}
break;
default:
break;
}
return CallWindowProc (ax->control->originalWndProc, hwnd, message, wParam, lParam);
}
}
return DefWindowProc (hwnd, message, wParam, lParam);
}
ActiveXControlComponent& owner;
HWND controlHWND;
IStorage* storage;
IOleClientSite* clientSite;
IOleObject* control;
WNDPROC originalWndProc;
};
//==============================================================================
ActiveXControlComponent::ActiveXControlComponent()
: mouseEventsAllowed (true)
{
ActiveXHelpers::activeXComps.add (this);
}
ActiveXControlComponent::~ActiveXControlComponent()
{
deleteControl();
ActiveXHelpers::activeXComps.removeFirstMatchingValue (this);
}
void ActiveXControlComponent::paint (Graphics& g)
{
if (control == nullptr)
g.fillAll (Colours::lightgrey);
}
bool ActiveXControlComponent::createControl (const void* controlIID)
{
deleteControl();
if (ComponentPeer* const peer = getPeer())
{
const Rectangle<int> bounds (peer->getAreaCoveredBy (*this));
HWND hwnd = (HWND) peer->getNativeHandle();
ScopedPointer<Pimpl> newControl (new Pimpl (hwnd, *this));
HRESULT hr;
if ((hr = OleCreate (*(const IID*) controlIID, IID_IOleObject, 1 /*OLERENDER_DRAW*/, 0,
newControl->clientSite, newControl->storage,
(void**) &(newControl->control))) == S_OK)
{
newControl->control->SetHostNames (L"JUCE", 0);
if (OleSetContainedObject (newControl->control, TRUE) == S_OK)
{
RECT rect;
rect.left = bounds.getX();
rect.top = bounds.getY();
rect.right = bounds.getRight();
rect.bottom = bounds.getBottom();
if (newControl->control->DoVerb (OLEIVERB_SHOW, 0, newControl->clientSite, 0, hwnd, &rect) == S_OK)
{
control = newControl;
control->controlHWND = ActiveXHelpers::getHWND (this);
if (control->controlHWND != 0)
{
control->setControlBounds (bounds);
control->originalWndProc = (WNDPROC) GetWindowLongPtr ((HWND) control->controlHWND, GWLP_WNDPROC);
SetWindowLongPtr ((HWND) control->controlHWND, GWLP_WNDPROC, (LONG_PTR) Pimpl::activeXHookWndProc);
}
return true;
}
}
}
}
else
{
// the component must have already been added to a real window when you call this!
jassertfalse;
}
return false;
}
void ActiveXControlComponent::deleteControl()
{
control = nullptr;
}
void* ActiveXControlComponent::queryInterface (const void* iid) const
{
void* result = nullptr;
if (control != nullptr && control->control != nullptr
&& SUCCEEDED (control->control->QueryInterface (*(const IID*) iid, &result)))
return result;
return nullptr;
}
void ActiveXControlComponent::setMouseEventsAllowed (const bool eventsCanReachControl)
{
mouseEventsAllowed = eventsCanReachControl;
}