116 lines
4.2 KiB
C++
116 lines
4.2 KiB
C++
// HWNDHost.h
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//
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#ifndef DUI_CONTROL_HWNDHOST_H_INCLUDED
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#define DUI_CONTROL_HWNDHOST_H_INCLUDED
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namespace DirectUI
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{
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////////////////////////////////////////////////////////
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// HWNDHost
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// Element to HWND bridge
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#define HHC_CacheFont 0x00000001
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// HWNDHost subclasses the HWND child and intercepts all input. This input is forward to DUser
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// as a normal message (as if the message never originated via the HWND child). After the input
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// message routes, it will be sent to the peer gadget and then on to Element (via OnInput).
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// A HWND message will be constructed and sent to the HWND child.
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//
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// The following flags disables the forwarding of the original HWND message into the DUser world.
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// Thus, while the underlying gadget may get mouse/key focus, the HWND will appear as a
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// "dead area" within the Element.
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//
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// These options are used if the HWND is used in an environment where it is not guaranteed that
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// all messages sent to it will be dispatched. If they aren't, DUser's state cannot by synchronized.
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#define HHC_NoMouseForward 0x00000002
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#define HHC_NoKeyboardForward 0x00000004
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#define HHC_SyncText 0x00000008
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#define HHC_SyncPaint 0x00000010
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// Class definition
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class HWNDHost : public Element
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{
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public:
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static HRESULT Create(OUT Element** ppElement) { return Create(HHC_CacheFont, AE_MouseAndKeyboard, ppElement); }
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static HRESULT Create(UINT nCreate, UINT nActive, OUT Element** ppElement);
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// System events
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virtual void OnPropertyChanged(PropertyInfo* ppi, int iIndex, Value* pvOld, Value* pvNew);
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virtual void OnInput(InputEvent* pInput);
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virtual void OnDestroy();
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// HWNDHost system events, control notification
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virtual bool OnNotify(UINT nMsg, WPARAM wParam, LPARAM lParam, LRESULT* plRet);
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// Sizing callback
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virtual BOOL OnAdjustWindowSize(int x, int y, UINT uFlags);
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// Message callback
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virtual UINT MessageCallback(GMSG* pGMsg);
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// Rendering
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virtual void Paint(HDC hDC, const RECT* prcBounds, const RECT* prcInvalid, RECT* prcSkipBorder, RECT* prcSkipContent);
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#ifdef GADGET_ENABLE_GDIPLUS
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virtual void Paint(Gdiplus::Graphics* pgpgr, const Gdiplus::RectF* prcBounds, const Gdiplus::RectF* prcInvalid, Gdiplus::RectF* prSkipBorder, Gdiplus::RectF* prSkipContent);
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#endif
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HWND GetHWND() { return _hwndCtrl; }
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HWND GetHWNDParent() { return _hwndSink; }
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void Detach();
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// ClassInfo accessors (static and virtual instance-based)
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static IClassInfo* Class;
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virtual IClassInfo* GetClassInfo() { return Class; }
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static HRESULT Register();
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///////////////////////////////////////////////////////
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// Accessibility support
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virtual HRESULT GetAccessibleImpl(IAccessible ** ppAccessible);
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HWNDHost() { }
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HRESULT Initialize(UINT nCreate, UINT nActive);
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virtual ~HWNDHost() { }
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protected:
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virtual void OnHosted(Element* peNewHost);
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virtual void OnUnHosted(Element* peOldHost);
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virtual HWND CreateHWND(HWND hwndParent);
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// Synchronize control and sink to changes
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void SyncRect(UINT nChangeFlags, bool bForceSync = false);
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void SyncParent();
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void SyncStyle();
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void SyncVisible();
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void SyncFont();
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void SyncText();
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private:
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// Control and sink subclass procs
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static BOOL CALLBACK _SinkWndProc(void* pThis, HWND hwnd, UINT nMsg, WPARAM wParam, LPARAM lParam, LRESULT* plRet);
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static BOOL CALLBACK _CtrlWndProc(void* pThis, HWND hwnd, UINT nMsg, WPARAM wParam, LPARAM lParam, LRESULT* plRet);
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static const UINT g_rgMouseMap[7][3]; // Gadget input message to HWND input message mapping
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bool _fHwndCreate; // On first call, create HWNDs (sink and control)
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HWND _hwndCtrl; // Hosted control
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HWND _hwndSink; // HWND used to receive control notifications
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WNDPROC _pfnCtrlOrgProc; // The Controls original WNDPROC
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RECT _rcBounds; // Bounds of sink and control (in client coordinates)
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HFONT _hFont; // Cached font (optional)
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UINT _nCreate; // Creation flags
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};
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} // namespace DirectUI
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#endif // DUI_CONTROL_HWNDHOST_H_INCLUDED
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