dlls/ddraw/clipper.c

   1 /* DirectDrawClipper implementation
   2  *
   3  * Copyright 2000 (c) Marcus Meissner
   4  * Copyright 2000 (c) TransGaming Technologies Inc.
   5  * Copyright 2006 (c) Stefan Dösinger
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "ddraw.h"
  32 #include "winerror.h"
  33
  34 #include "ddraw_private.h"
  35
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  39
  40 /*****************************************************************************
  41  * IUnknown methods
  42  *****************************************************************************/
  43
  44 /*****************************************************************************
  45  * IDirectDrawClipper::QueryInterface
  46  *
  47  * Can query the IUnknown and IDirectDrawClipper interface from a
  48  * Clipper object. The IUnknown Interface is equal to the IDirectDrawClipper
  49  * interface. Can't create other interfaces.
  50  *
  51  * Arguments:
  52  *  riid: Interface id asked for
  53  *  ppvObj: Returns the pointer to the interface
  54  *
  55  * Return values:
  56  *  DD_OK on success
  57  *  E_NOINTERFACE if the requested interface wasn't found.
  58  *
  59  *****************************************************************************/
  60 static HRESULT WINAPI IDirectDrawClipperImpl_QueryInterface(
  61     LPDIRECTDRAWCLIPPER iface, REFIID riid, LPVOID* ppvObj
  62 ) {
  63     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
  64
  65     if (IsEqualGUID(&IID_IUnknown, riid)
  66         || IsEqualGUID(&IID_IDirectDrawClipper, riid))
  67     {
  68         *ppvObj = ICOM_INTERFACE(This, IDirectDrawClipper);
  69         InterlockedIncrement(&This->ref);
  70         return S_OK;
  71     }
  72     else
  73     {
  74         return E_NOINTERFACE;
  75     }
  76 }
  77
  78 /*****************************************************************************
  79  * IDirectDrawClipper::AddRef
  80  *
  81  * Increases the reference count of the interface, returns the new count
  82  *
  83  *****************************************************************************/
  84 static ULONG WINAPI IDirectDrawClipperImpl_AddRef( LPDIRECTDRAWCLIPPER iface )
  85 {
  86     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
  87     ULONG ref = InterlockedIncrement(&This->ref);
  88
  89     TRACE("(%p)->() incrementing from %u.\n", This, ref - 1);
  90
  91     return ref;
  92 }
  93
  94 /*****************************************************************************
  95  * IDirectDrawClipper::Release
  96  *
  97  * Decreases the reference count of the interface, returns the new count
  98  * If the refcount is decreased to 0, the interface is destroyed.
  99  *
 100  *****************************************************************************/
 101 static ULONG WINAPI IDirectDrawClipperImpl_Release(IDirectDrawClipper *iface) {
 102     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 103     ULONG ref = InterlockedDecrement(&This->ref);
 104
 105     TRACE("(%p)->() decrementing from %u.\n", This, ref + 1);
 106
 107     if (ref == 0)
 108     {
 109         EnterCriticalSection(&ddraw_cs);
 110         IWineD3DClipper_Release(This->wineD3DClipper);
 111         HeapFree(GetProcessHeap(), 0, This);
 112         LeaveCriticalSection(&ddraw_cs);
 113         return 0;
 114     }
 115     else return ref;
 116 }
 117
 118 /*****************************************************************************
 119  * IDirectDrawClipper::SetHwnd
 120  *
 121  * Assigns a hWnd to the clipper interface.
 122  *
 123  * Arguments:
 124  *  Flags: Unsupported so far
 125  *  hWnd: The hWnd to set
 126  *
 127  * Return values:
 128  *  DD_OK on success
 129  *  DDERR_INVALIDPARAMS if Flags was != 0
 130  *
 131  *****************************************************************************/
 132
 133 static HRESULT WINAPI IDirectDrawClipperImpl_SetHwnd(
 134     LPDIRECTDRAWCLIPPER iface, DWORD dwFlags, HWND hWnd
 135 ) {
 136     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 137     HRESULT hr;
 138     TRACE("(%p)->(%08x,%p)\n", This, dwFlags, hWnd);
 139
 140     EnterCriticalSection(&ddraw_cs);
 141     hr = IWineD3DClipper_SetHWnd(This->wineD3DClipper,
 142                                  dwFlags,
 143                                  hWnd);
 144     LeaveCriticalSection(&ddraw_cs);
 145     switch(hr)
 146     {
 147         case WINED3DERR_INVALIDCALL:        return DDERR_INVALIDPARAMS;
 148         default:                            return hr;
 149     }
 150 }
 151
 152 /*****************************************************************************
 153  * IDirectDrawClipper::GetClipList
 154  *
 155  * Retrieve a copy of the clip list
 156  *
 157  * Arguments:
 158  *  Rect: Rectangle to be used to clip the clip list or NULL for the
 159  *        entire clip list
 160  *  ClipList: structure for the resulting copy of the clip list.
 161  *            If NULL, fills Size up to the number of bytes necessary to hold
 162  *            the entire clip.
 163  *  Size: Size of resulting clip list; size of the buffer at ClipList
 164  *        or, if ClipList is NULL, receives the required size of the buffer
 165  *        in bytes
 166  *
 167  * RETURNS
 168  *  Either DD_OK or DDERR_*
 169  ************************************************************************/
 170 static HRESULT WINAPI IDirectDrawClipperImpl_GetClipList(
 171     LPDIRECTDRAWCLIPPER iface, LPRECT lpRect, LPRGNDATA lpClipList,
 172     LPDWORD lpdwSize)
 173 {
 174     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 175     HRESULT hr;
 176     TRACE("(%p,%p,%p,%p)\n", This, lpRect, lpClipList, lpdwSize);
 177
 178     EnterCriticalSection(&ddraw_cs);
 179     hr = IWineD3DClipper_GetClipList(This->wineD3DClipper,
 180                                      lpRect,
 181                                      lpClipList,
 182                                      lpdwSize);
 183     LeaveCriticalSection(&ddraw_cs);
 184     return hr;
 185 }
 186
 187 /*****************************************************************************
 188  * IDirectDrawClipper::SetClipList
 189  *
 190  * Sets or deletes (if lprgn is NULL) the clip list
 191  *
 192  * This implementation is a stub and returns DD_OK always to make the app
 193  * happy.
 194  *
 195  * PARAMS
 196  *  lprgn   Pointer to a LRGNDATA structure or NULL
 197  *  dwFlags not used, must be 0
 198  * RETURNS
 199  *  Either DD_OK or DDERR_*
 200  *****************************************************************************/
 201 static HRESULT WINAPI IDirectDrawClipperImpl_SetClipList(
 202     LPDIRECTDRAWCLIPPER iface,LPRGNDATA lprgn,DWORD dwFlag
 203 ) {
 204     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 205     HRESULT hr;
 206
 207     EnterCriticalSection(&ddraw_cs);
 208     hr = IWineD3DClipper_SetClipList(This->wineD3DClipper,
 209                                      lprgn,
 210                                      dwFlag);
 211     LeaveCriticalSection(&ddraw_cs);
 212     return hr;
 213 }
 214
 215 /*****************************************************************************
 216  * IDirectDrawClipper::GetHwnd
 217  *
 218  * Returns the hwnd assigned with SetHwnd
 219  *
 220  * Arguments:
 221  *  hWndPtr: Address to store the HWND at
 222  *
 223  * Return values:
 224  *  Always returns DD_OK;
 225  *****************************************************************************/
 226 static HRESULT WINAPI IDirectDrawClipperImpl_GetHWnd(
 227     LPDIRECTDRAWCLIPPER iface, HWND* hWndPtr
 228 ) {
 229     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 230     HRESULT hr;
 231     TRACE("(%p)->(%p)\n", This, hWndPtr);
 232
 233     EnterCriticalSection(&ddraw_cs);
 234     hr =  IWineD3DClipper_GetHWnd(This->wineD3DClipper,
 235                                   hWndPtr);
 236     LeaveCriticalSection(&ddraw_cs);
 237     return hr;
 238 }
 239
 240 /*****************************************************************************
 241  * IDirectDrawClipper::Initialize
 242  *
 243  * Initializes the interface. Well, there isn't much to do for this
 244  * implementation, but it stores the DirectDraw Interface.
 245  *
 246  * Arguments:
 247  *  DD: Pointer to a IDirectDraw interface
 248  *  Flags: Unsupported by now
 249  *
 250  * Return values:
 251  *  DD_OK on success
 252  *  DDERR_ALREADYINITIALIZED if this interface isn't initialized already
 253  *****************************************************************************/
 254 static HRESULT WINAPI IDirectDrawClipperImpl_Initialize(
 255      LPDIRECTDRAWCLIPPER iface, LPDIRECTDRAW lpDD, DWORD dwFlags
 256 ) {
 257     IDirectDrawImpl* pOwner;
 258     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 259     TRACE("(%p)->(%p,0x%08x)\n", This, lpDD, dwFlags);
 260
 261     EnterCriticalSection(&ddraw_cs);
 262     if (This->ddraw_owner != NULL)
 263     {
 264         LeaveCriticalSection(&ddraw_cs);
 265         return DDERR_ALREADYINITIALIZED;
 266     }
 267
 268     pOwner = ICOM_OBJECT(IDirectDrawImpl, IDirectDraw, lpDD);
 269     This->ddraw_owner = pOwner;
 270
 271     LeaveCriticalSection(&ddraw_cs);
 272     return DD_OK;
 273 }
 274
 275 /*****************************************************************************
 276  * IDirectDrawClipper::IsClipListChanged
 277  *
 278  * This function is a stub
 279  *
 280  * Arguments:
 281  *  Changed:
 282  *
 283  * Return values:
 284  *  DD_OK, because it's a stub
 285  *****************************************************************************/
 286 static HRESULT WINAPI IDirectDrawClipperImpl_IsClipListChanged(
 287     LPDIRECTDRAWCLIPPER iface, BOOL* lpbChanged
 288 ) {
 289     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 290     FIXME("(%p)->(%p),stub!\n",This,lpbChanged);
 291
 292     /* XXX What is safest? */
 293     *lpbChanged = FALSE;
 294
 295     return DD_OK;
 296 }
 297
 298 /*****************************************************************************
 299  * The VTable
 300  *****************************************************************************/
 301 const IDirectDrawClipperVtbl IDirectDrawClipper_Vtbl =
 302 {
 303     IDirectDrawClipperImpl_QueryInterface,
 304     IDirectDrawClipperImpl_AddRef,
 305     IDirectDrawClipperImpl_Release,
 306     IDirectDrawClipperImpl_GetClipList,
 307     IDirectDrawClipperImpl_GetHWnd,
 308     IDirectDrawClipperImpl_Initialize,
 309     IDirectDrawClipperImpl_IsClipListChanged,
 310     IDirectDrawClipperImpl_SetClipList,
 311     IDirectDrawClipperImpl_SetHwnd
 312 };