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Sweden-Number/dlls/ddraw/clipper.c

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/* DirectDrawClipper implementation
*
* Copyright 2000 (c) Marcus Meissner
* Copyright 2000 (c) TransGaming Technologies Inc.
* Copyright 2006 (c) Stefan Dösinger
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "ddraw.h"
#include "winerror.h"
#include "ddraw_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
/*****************************************************************************
* IUnknown methods
*****************************************************************************/
/*****************************************************************************
* IDirectDrawClipper::QueryInterface
*
* Can query the IUnknown and IDirectDrawClipper interface from a
* Clipper object. The IUnknown Interface is equal to the IDirectDrawClipper
* interface. Can't create other interfaces.
*
* Arguments:
* riid: Interface id asked for
* ppvObj: Returns the pointer to the interface
*
* Return values:
* DD_OK on success
* E_NOINTERFACE if the requested interface wasn't found.
*
*****************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_QueryInterface(
LPDIRECTDRAWCLIPPER iface, REFIID riid, LPVOID* ppvObj
) {
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
if (IsEqualGUID(&IID_IUnknown, riid)
|| IsEqualGUID(&IID_IDirectDrawClipper, riid))
{
*ppvObj = ICOM_INTERFACE(This, IDirectDrawClipper);
InterlockedIncrement(&This->ref);
return S_OK;
}
else
{
return E_NOINTERFACE;
}
}
/*****************************************************************************
* IDirectDrawClipper::AddRef
*
* Increases the reference count of the interface, returns the new count
*
*****************************************************************************/
static ULONG WINAPI IDirectDrawClipperImpl_AddRef( LPDIRECTDRAWCLIPPER iface )
{
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p)->() incrementing from %lu.\n", This, ref - 1);
return ref;
}
/*****************************************************************************
* IDirectDrawClipper::Release
*
* Decreases the reference count of the interface, returns the new count
* If the refcount is decreased to 0, the interface is destroyed.
*
*****************************************************************************/
static ULONG WINAPI IDirectDrawClipperImpl_Release(IDirectDrawClipper *iface) {
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p)->() decrementing from %lu.\n", This, ref + 1);
if (ref == 0)
{
HeapFree(GetProcessHeap(), 0, This);
return 0;
}
else return ref;
}
/*****************************************************************************
* IDirectDrawClipper::SetHwnd
*
* Assigns a hWnd to the clipper interface.
*
* Arguments:
* Flags: Unsupported so far
* hWnd: The hWnd to set
*
* Return values:
* DD_OK on success
* DDERR_INVALIDPARAMS if Flags was != 0
*
*****************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_SetHwnd(
LPDIRECTDRAWCLIPPER iface, DWORD dwFlags, HWND hWnd
) {
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
TRACE("(%p)->(0x%08lx,0x%08lx)\n", This, dwFlags, (DWORD)hWnd);
if( dwFlags ) {
FIXME("dwFlags = 0x%08lx, not supported.\n",dwFlags);
return DDERR_INVALIDPARAMS;
}
This->hWnd = hWnd;
return DD_OK;
}
/*****************************************************************************
* IDirectDrawClipper::GetClipList
*
* Retrieve a copy of the clip list
*
* Arguments:
* Rect: Rectangle to be used to clip the clip list or NULL for the
* entire clip list
* ClipList: structure for the resulting copy of the clip list.
* If NULL, fills Size up to the number of bytes necessary to hold
* the entire clip.
* Size: Size of resulting clip list; size of the buffer at ClipList
* or, if ClipList is NULL, receives the required size of the buffer
* in bytes
*
* RETURNS
* Either DD_OK or DDERR_*
************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_GetClipList(
LPDIRECTDRAWCLIPPER iface, LPRECT lpRect, LPRGNDATA lpClipList,
LPDWORD lpdwSize)
{
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
TRACE("(%p,%p,%p,%p)\n", This, lpRect, lpClipList, lpdwSize);
if (This->hWnd)
{
HDC hDC = GetDCEx(This->hWnd, NULL, DCX_WINDOW);
if (hDC)
{
HRGN hRgn = CreateRectRgn(0,0,0,0);
if (GetRandomRgn(hDC, hRgn, SYSRGN))
{
if (GetVersion() & 0x80000000)
{
/* map region to screen coordinates */
POINT org;
GetDCOrgEx( hDC, &org );
OffsetRgn( hRgn, org.x, org.y );
}
if (lpRect)
{
HRGN hRgnClip = CreateRectRgn(lpRect->left, lpRect->top,
lpRect->right, lpRect->bottom);
CombineRgn(hRgn, hRgn, hRgnClip, RGN_AND);
DeleteObject(hRgnClip);
}
*lpdwSize = GetRegionData(hRgn, *lpdwSize, lpClipList);
}
DeleteObject(hRgn);
ReleaseDC(This->hWnd, hDC);
}
return DD_OK;
}
else
{
static int warned = 0;
if (warned++ < 10)
FIXME("(%p,%p,%p,%p),stub!\n",This,lpRect,lpClipList,lpdwSize);
if (lpdwSize) *lpdwSize=0;
return DDERR_NOCLIPLIST;
}
}
/*****************************************************************************
* IDirectDrawClipper::SetClipList
*
* Sets or deletes (if lprgn is NULL) the clip list
*
* This implementation is a stup and returns DD_OK always to make the app
* happy.
*
* PARAMS
* lprgn Pointer to a LRGNDATA structure or NULL
* dwFlags not used, must be 0
* RETURNS
* Either DD_OK or DDERR_*
*****************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_SetClipList(
LPDIRECTDRAWCLIPPER iface,LPRGNDATA lprgn,DWORD dwFlag
) {
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
static int warned = 0;
if (warned++ < 10 || lprgn == NULL)
FIXME("(%p,%p,%ld),stub!\n",This,lprgn,dwFlag);
return DD_OK;
}
/*****************************************************************************
* IDirectDrawClipper::GetHwnd
*
* Returns the hwnd assigned with SetHwnd
*
* Arguments:
* hWndPtr: Address to store the HWND at
*
* Return values:
* Always returns DD_OK;
*****************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_GetHWnd(
LPDIRECTDRAWCLIPPER iface, HWND* hWndPtr
) {
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
TRACE("(%p)->(%p)\n", This, hWndPtr);
*hWndPtr = This->hWnd;
return DD_OK;
}
/*****************************************************************************
* IDirectDrawClipper::Initialize
*
* Initializes the interface. Well, there isn't much to do for this
* implementation, but it stores the DirectDraw Interface.
*
* Arguments:
* DD: Pointer to a IDirectDraw interface
* Flags: Unsupported by now
*
* Return values:
* DD_OK on success
* DDERR_ALREADYINITIALIZED if this interface isn't initialized allready
*****************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_Initialize(
LPDIRECTDRAWCLIPPER iface, LPDIRECTDRAW lpDD, DWORD dwFlags
) {
IDirectDrawImpl* pOwner;
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
TRACE("(%p)->(%p,0x%08lx)\n", This, lpDD, dwFlags);
if (This->ddraw_owner != NULL) return DDERR_ALREADYINITIALIZED;
pOwner = ICOM_OBJECT(IDirectDrawImpl, IDirectDraw, lpDD);
This->ddraw_owner = pOwner;
return DD_OK;
}
/*****************************************************************************
* IDirectDrawClipper::IsClipListChanged
*
* This function is a stub
*
* Arguments:
* Changed:
*
* Return values:
* DD_OK, because it's a stub
*****************************************************************************/
static HRESULT WINAPI IDirectDrawClipperImpl_IsClipListChanged(
LPDIRECTDRAWCLIPPER iface, BOOL* lpbChanged
) {
IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
FIXME("(%p)->(%p),stub!\n",This,lpbChanged);
/* XXX What is safest? */
*lpbChanged = FALSE;
return DD_OK;
}
/*****************************************************************************
* The VTable
*****************************************************************************/
const IDirectDrawClipperVtbl IDirectDrawClipper_Vtbl =
{
IDirectDrawClipperImpl_QueryInterface,
IDirectDrawClipperImpl_AddRef,
IDirectDrawClipperImpl_Release,
IDirectDrawClipperImpl_GetClipList,
IDirectDrawClipperImpl_GetHWnd,
IDirectDrawClipperImpl_Initialize,
IDirectDrawClipperImpl_IsClipListChanged,
IDirectDrawClipperImpl_SetClipList,
IDirectDrawClipperImpl_SetHwnd
};
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