dlls/ddraw/clipper.c

   1 /*              DirectDrawClipper implementation
   2  *
   3  * Copyright 2000 Marcus Meissner
   4  * Copyright 2000 TransGaming Technologies Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "ddraw.h"
  31 #include "winerror.h"
  32
  33 #include "ddraw_private.h"
  34
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  38
  39 /******************************************************************************
  40  *                      DirectDrawCreateClipper (DDRAW.@)
  41  */
  42
  43 static const IDirectDrawClipperVtbl DDRAW_Clipper_VTable;
  44
  45 HRESULT WINAPI DirectDrawCreateClipper(
  46     DWORD dwFlags, LPDIRECTDRAWCLIPPER *lplpDDClipper, LPUNKNOWN pUnkOuter
  47 ) {
  48     IDirectDrawClipperImpl* This;
  49     TRACE("(%08lx,%p,%p)\n", dwFlags, lplpDDClipper, pUnkOuter);
  50
  51     if (pUnkOuter != NULL) return CLASS_E_NOAGGREGATION;
  52
  53     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  54                      sizeof(IDirectDrawClipperImpl));
  55     if (This == NULL) return E_OUTOFMEMORY;
  56
  57     ICOM_INIT_INTERFACE(This, IDirectDrawClipper, DDRAW_Clipper_VTable);
  58     This->ref = 1;
  59     This->hWnd = 0;
  60     This->ddraw_owner = NULL;
  61
  62     *lplpDDClipper = ICOM_INTERFACE(This, IDirectDrawClipper);
  63     return DD_OK;
  64 }
  65
  66 /* This is the classfactory implementation. */
  67 HRESULT DDRAW_CreateDirectDrawClipper(IUnknown* pUnkOuter, REFIID riid,
  68                                       LPVOID* ppObj)
  69 {
  70     HRESULT hr;
  71     LPDIRECTDRAWCLIPPER pClip;
  72
  73     hr = DirectDrawCreateClipper(0, &pClip, pUnkOuter);
  74     if (FAILED(hr)) return hr;
  75
  76     hr = IDirectDrawClipper_QueryInterface(pClip, riid, ppObj);
  77     IDirectDrawClipper_Release(pClip);
  78     return hr;
  79 }
  80
  81 /******************************************************************************
  82  *                      IDirectDrawClipper
  83  */
  84 HRESULT WINAPI Main_DirectDrawClipper_SetHwnd(
  85     LPDIRECTDRAWCLIPPER iface, DWORD dwFlags, HWND hWnd
  86 ) {
  87     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
  88
  89     TRACE("(%p)->(0x%08lx,0x%08lx)\n", This, dwFlags, (DWORD)hWnd);
  90     if( dwFlags ) {
  91         FIXME("dwFlags = 0x%08lx, not supported.\n",dwFlags);
  92         return DDERR_INVALIDPARAMS;
  93     }
  94
  95     This->hWnd = hWnd;
  96     return DD_OK;
  97 }
  98
  99 static void Main_DirectDrawClipper_Destroy(IDirectDrawClipperImpl* This)
 100 {
 101     if (This->ddraw_owner != NULL)
 102         Main_DirectDraw_RemoveClipper(This->ddraw_owner, This);
 103
 104     HeapFree(GetProcessHeap(), 0 ,This);
 105 }
 106
 107 void Main_DirectDrawClipper_ForceDestroy(IDirectDrawClipperImpl* This)
 108 {
 109     WARN("deleting clipper %p with refcnt %lu\n", This, This->ref);
 110     Main_DirectDrawClipper_Destroy(This);
 111 }
 112
 113 ULONG WINAPI Main_DirectDrawClipper_Release(LPDIRECTDRAWCLIPPER iface) {
 114     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 115     ULONG ref = InterlockedDecrement(&This->ref);
 116
 117     TRACE("(%p)->() decrementing from %lu.\n", This, ref + 1);
 118
 119     if (ref == 0)
 120     {
 121         Main_DirectDrawClipper_Destroy(This);
 122         return 0;
 123     }
 124     else return ref;
 125 }
 126
 127 /***********************************************************************
 128 *           IDirectDrawClipper::GetClipList
 129 *
 130 * Retrieve a copy of the clip list
 131 *
 132 * PARAMS
 133 *  lpRect  Rectangle to be used to clip the clip list or NULL for the
 134 *          entire clip list
 135 *  lpClipList structure for the resulting copy of the clip list.
 136            If NULL, fills lpdwSize up to the number of bytes necessary to hold
 137            the entire clip.
 138 *  lpdwSize Size of resulting clip list; size of the buffer at lpClipList
 139            or, if lpClipList is NULL, receives the required size of the buffer
 140            in bytes
 141 * RETURNS
 142 *  Either DD_OK or DDERR_*
 143 */
 144 HRESULT WINAPI Main_DirectDrawClipper_GetClipList(
 145     LPDIRECTDRAWCLIPPER iface, LPRECT lpRect, LPRGNDATA lpClipList,
 146     LPDWORD lpdwSize)
 147 {
 148     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 149
 150     TRACE("(%p,%p,%p,%p)\n", This, lpRect, lpClipList, lpdwSize);
 151
 152     if (This->hWnd)
 153     {
 154         HDC hDC = GetDCEx(This->hWnd, NULL, DCX_WINDOW);
 155         if (hDC)
 156         {
 157             HRGN hRgn = CreateRectRgn(0,0,0,0);
 158             if (GetRandomRgn(hDC, hRgn, SYSRGN))
 159             {
 160                 if (lpRect)
 161                 {
 162                     HRGN hRgnClip = CreateRectRgn(lpRect->left, lpRect->top,
 163                         lpRect->right, lpRect->bottom);
 164                     CombineRgn(hRgn, hRgn, hRgnClip, RGN_AND);
 165                     DeleteObject(hRgnClip);
 166                 }
 167                 *lpdwSize = GetRegionData(hRgn, *lpdwSize, lpClipList);
 168             }
 169             DeleteObject(hRgn);
 170             ReleaseDC(This->hWnd, hDC);
 171         }
 172         return DD_OK;
 173     }
 174     else
 175     {
 176         static int warned = 0;
 177         if (warned++ < 10)
 178             FIXME("(%p,%p,%p,%p),stub!\n",This,lpRect,lpClipList,lpdwSize);
 179         if (lpdwSize) *lpdwSize=0;
 180         return DDERR_NOCLIPLIST;
 181     }
 182 }
 183
 184 /***********************************************************************
 185 *           IDirectDrawClipper::SetClipList
 186 *
 187 * Sets or deletes (if lprgn is NULL) the clip list
 188 *
 189 * PARAMS
 190 *  lprgn   Pointer to a LRGNDATA structure or NULL
 191 *  dwFlags not used, must be 0
 192 * RETURNS
 193 *  Either DD_OK or DDERR_*
 194 */
 195 HRESULT WINAPI Main_DirectDrawClipper_SetClipList(
 196     LPDIRECTDRAWCLIPPER iface,LPRGNDATA lprgn,DWORD dwFlag
 197 ) {
 198     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 199     static int warned = 0;
 200     if (warned++ < 10 || lprgn == NULL)
 201         FIXME("(%p,%p,%ld),stub!\n",This,lprgn,dwFlag);
 202     return DD_OK;
 203 }
 204
 205 HRESULT WINAPI Main_DirectDrawClipper_QueryInterface(
 206     LPDIRECTDRAWCLIPPER iface, REFIID riid, LPVOID* ppvObj
 207 ) {
 208     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 209
 210     if (IsEqualGUID(&IID_IUnknown, riid)
 211         || IsEqualGUID(&IID_IDirectDrawClipper, riid))
 212     {
 213         *ppvObj = ICOM_INTERFACE(This, IDirectDrawClipper);
 214         InterlockedIncrement(&This->ref);
 215         return S_OK;
 216     }
 217     else
 218     {
 219         return E_NOINTERFACE;
 220     }
 221 }
 222
 223 ULONG WINAPI Main_DirectDrawClipper_AddRef( LPDIRECTDRAWCLIPPER iface )
 224 {
 225     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 226     ULONG ref = InterlockedIncrement(&This->ref);
 227
 228     TRACE("(%p)->() incrementing from %lu.\n", This, ref - 1);
 229
 230     return ref;
 231 }
 232
 233 HRESULT WINAPI Main_DirectDrawClipper_GetHWnd(
 234     LPDIRECTDRAWCLIPPER iface, HWND* hWndPtr
 235 ) {
 236     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 237     TRACE("(%p)->(%p)\n", This, hWndPtr);
 238
 239     *hWndPtr = This->hWnd;
 240
 241     return DD_OK;
 242 }
 243
 244 HRESULT WINAPI Main_DirectDrawClipper_Initialize(
 245      LPDIRECTDRAWCLIPPER iface, LPDIRECTDRAW lpDD, DWORD dwFlags
 246 ) {
 247     IDirectDrawImpl* pOwner;
 248     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 249     TRACE("(%p)->(%p,0x%08lx)\n", This, lpDD, dwFlags);
 250
 251     if (This->ddraw_owner != NULL) return DDERR_ALREADYINITIALIZED;
 252
 253     pOwner = ICOM_OBJECT(IDirectDrawImpl, IDirectDraw, lpDD);
 254     This->ddraw_owner = pOwner;
 255     Main_DirectDraw_AddClipper(pOwner, This);
 256
 257     return DD_OK;
 258 }
 259
 260 HRESULT WINAPI Main_DirectDrawClipper_IsClipListChanged(
 261     LPDIRECTDRAWCLIPPER iface, BOOL* lpbChanged
 262 ) {
 263     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 264     FIXME("(%p)->(%p),stub!\n",This,lpbChanged);
 265
 266     /* XXX What is safest? */
 267     *lpbChanged = FALSE;
 268
 269     return DD_OK;
 270 }
 271
 272 static const IDirectDrawClipperVtbl DDRAW_Clipper_VTable =
 273 {
 274     Main_DirectDrawClipper_QueryInterface,
 275     Main_DirectDrawClipper_AddRef,
 276     Main_DirectDrawClipper_Release,
 277     Main_DirectDrawClipper_GetClipList,
 278     Main_DirectDrawClipper_GetHWnd,
 279     Main_DirectDrawClipper_Initialize,
 280     Main_DirectDrawClipper_IsClipListChanged,
 281     Main_DirectDrawClipper_SetClipList,
 282     Main_DirectDrawClipper_SetHwnd
 283 };