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 #define CONST_VTABLE
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "wingdi.h"
  32 #include "ddraw.h"
  33 #include "winerror.h"
  34
  35 #include "ddraw_private.h"
  36
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  40
  41 /******************************************************************************
  42  *                      DirectDrawCreateClipper (DDRAW.@)
  43  */
  44
  45 static const IDirectDrawClipperVtbl DDRAW_Clipper_VTable;
  46
  47 HRESULT WINAPI DirectDrawCreateClipper(
  48     DWORD dwFlags, LPDIRECTDRAWCLIPPER *lplpDDClipper, LPUNKNOWN pUnkOuter
  49 ) {
  50     IDirectDrawClipperImpl* This;
  51     TRACE("(%08lx,%p,%p)\n", dwFlags, lplpDDClipper, pUnkOuter);
  52
  53     if (pUnkOuter != NULL) return CLASS_E_NOAGGREGATION;
  54
  55     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  56                      sizeof(IDirectDrawClipperImpl));
  57     if (This == NULL) return E_OUTOFMEMORY;
  58
  59     ICOM_INIT_INTERFACE(This, IDirectDrawClipper, DDRAW_Clipper_VTable);
  60     This->ref = 1;
  61     This->hWnd = 0;
  62     This->ddraw_owner = NULL;
  63
  64     *lplpDDClipper = ICOM_INTERFACE(This, IDirectDrawClipper);
  65     return DD_OK;
  66 }
  67
  68 /* This is the classfactory implementation. */
  69 HRESULT DDRAW_CreateDirectDrawClipper(IUnknown* pUnkOuter, REFIID riid,
  70                                       LPVOID* ppObj)
  71 {
  72     HRESULT hr;
  73     LPDIRECTDRAWCLIPPER pClip;
  74
  75     hr = DirectDrawCreateClipper(0, &pClip, pUnkOuter);
  76     if (FAILED(hr)) return hr;
  77
  78     hr = IDirectDrawClipper_QueryInterface(pClip, riid, ppObj);
  79     IDirectDrawClipper_Release(pClip);
  80     return hr;
  81 }
  82
  83 /******************************************************************************
  84  *                      IDirectDrawClipper
  85  */
  86 HRESULT WINAPI Main_DirectDrawClipper_SetHwnd(
  87     LPDIRECTDRAWCLIPPER iface, DWORD dwFlags, HWND hWnd
  88 ) {
  89     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
  90
  91     TRACE("(%p)->(0x%08lx,0x%08lx)\n", This, dwFlags, (DWORD)hWnd);
  92     if( dwFlags ) {
  93         FIXME("dwFlags = 0x%08lx, not supported.\n",dwFlags);
  94         return DDERR_INVALIDPARAMS;
  95     }
  96
  97     This->hWnd = hWnd;
  98     return DD_OK;
  99 }
 100
 101 static void Main_DirectDrawClipper_Destroy(IDirectDrawClipperImpl* This)
 102 {
 103     if (This->ddraw_owner != NULL)
 104         Main_DirectDraw_RemoveClipper(This->ddraw_owner, This);
 105
 106     HeapFree(GetProcessHeap(), 0 ,This);
 107 }
 108
 109 void Main_DirectDrawClipper_ForceDestroy(IDirectDrawClipperImpl* This)
 110 {
 111     WARN("deleting clipper %p with refcnt %lu\n", This, This->ref);
 112     Main_DirectDrawClipper_Destroy(This);
 113 }
 114
 115 ULONG WINAPI Main_DirectDrawClipper_Release(LPDIRECTDRAWCLIPPER iface) {
 116     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 117     ULONG ref = InterlockedDecrement(&This->ref);
 118
 119     TRACE("(%p)->() decrementing from %lu.\n", This, ref + 1);
 120
 121     if (ref == 0)
 122     {
 123         Main_DirectDrawClipper_Destroy(This);
 124         return 0;
 125     }
 126     else return ref;
 127 }
 128
 129 /***********************************************************************
 130 *           IDirectDrawClipper::GetClipList
 131 *
 132 * Retrieve a copy of the clip list
 133 *
 134 * PARAMS
 135 *  lpRect  Rectangle to be used to clip the clip list or NULL for the
 136 *          entire clip list
 137 *  lpClipList structure for the resulting copy of the clip list.
 138            If NULL, fills lpdwSize up to the number of bytes necessary to hold
 139            the entire clip.
 140 *  lpdwSize Size of resulting clip list; size of the buffer at lpClipList
 141            or, if lpClipList is NULL, receives the required size of the buffer
 142            in bytes
 143 * RETURNS
 144 *  Either DD_OK or DDERR_*
 145 */
 146 HRESULT WINAPI Main_DirectDrawClipper_GetClipList(
 147     LPDIRECTDRAWCLIPPER iface, LPRECT lpRect, LPRGNDATA lpClipList,
 148     LPDWORD lpdwSize)
 149 {
 150     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 151
 152     TRACE("(%p,%p,%p,%p)\n", This, lpRect, lpClipList, lpdwSize);
 153
 154     if (This->hWnd)
 155     {
 156         HDC hDC = GetDCEx(This->hWnd, NULL, DCX_WINDOW);
 157         if (hDC)
 158         {
 159             HRGN hRgn = CreateRectRgn(0,0,0,0);
 160             if (GetRandomRgn(hDC, hRgn, SYSRGN))
 161             {
 162                 if (lpRect)
 163                 {
 164                     HRGN hRgnClip = CreateRectRgn(lpRect->left, lpRect->top,
 165                         lpRect->right, lpRect->bottom);
 166                     CombineRgn(hRgn, hRgn, hRgnClip, RGN_AND);
 167                     DeleteObject(hRgnClip);
 168                 }
 169                 *lpdwSize = GetRegionData(hRgn, *lpdwSize, lpClipList);
 170             }
 171             DeleteObject(hRgn);
 172             ReleaseDC(This->hWnd, hDC);
 173         }
 174         return DD_OK;
 175     }
 176     else
 177     {
 178         static int warned = 0;
 179         if (warned++ < 10)
 180             FIXME("(%p,%p,%p,%p),stub!\n",This,lpRect,lpClipList,lpdwSize);
 181         if (lpdwSize) *lpdwSize=0;
 182         return DDERR_NOCLIPLIST;
 183     }
 184 }
 185
 186 /***********************************************************************
 187 *           IDirectDrawClipper::SetClipList
 188 *
 189 * Sets or deletes (if lprgn is NULL) the clip list
 190 *
 191 * PARAMS
 192 *  lprgn   Pointer to a LRGNDATA structure or NULL
 193 *  dwFlags not used, must be 0
 194 * RETURNS
 195 *  Either DD_OK or DDERR_*
 196 */
 197 HRESULT WINAPI Main_DirectDrawClipper_SetClipList(
 198     LPDIRECTDRAWCLIPPER iface,LPRGNDATA lprgn,DWORD dwFlag
 199 ) {
 200     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 201     static int warned = 0;
 202     if (warned++ < 10 || lprgn == NULL)
 203         FIXME("(%p,%p,%ld),stub!\n",This,lprgn,dwFlag);
 204     return DD_OK;
 205 }
 206
 207 HRESULT WINAPI Main_DirectDrawClipper_QueryInterface(
 208     LPDIRECTDRAWCLIPPER iface, REFIID riid, LPVOID* ppvObj
 209 ) {
 210     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 211
 212     if (IsEqualGUID(&IID_IUnknown, riid)
 213         || IsEqualGUID(&IID_IDirectDrawClipper, riid))
 214     {
 215         *ppvObj = ICOM_INTERFACE(This, IDirectDrawClipper);
 216         InterlockedIncrement(&This->ref);
 217         return S_OK;
 218     }
 219     else
 220     {
 221         return E_NOINTERFACE;
 222     }
 223 }
 224
 225 ULONG WINAPI Main_DirectDrawClipper_AddRef( LPDIRECTDRAWCLIPPER iface )
 226 {
 227     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 228     ULONG ref = InterlockedIncrement(&This->ref);
 229
 230     TRACE("(%p)->() incrementing from %lu.\n", This, ref - 1);
 231
 232     return ref;
 233 }
 234
 235 HRESULT WINAPI Main_DirectDrawClipper_GetHWnd(
 236     LPDIRECTDRAWCLIPPER iface, HWND* hWndPtr
 237 ) {
 238     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 239     TRACE("(%p)->(%p)\n", This, hWndPtr);
 240
 241     *hWndPtr = This->hWnd;
 242
 243     return DD_OK;
 244 }
 245
 246 HRESULT WINAPI Main_DirectDrawClipper_Initialize(
 247      LPDIRECTDRAWCLIPPER iface, LPDIRECTDRAW lpDD, DWORD dwFlags
 248 ) {
 249     IDirectDrawImpl* pOwner;
 250     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 251     TRACE("(%p)->(%p,0x%08lx)\n", This, lpDD, dwFlags);
 252
 253     if (This->ddraw_owner != NULL) return DDERR_ALREADYINITIALIZED;
 254
 255     pOwner = ICOM_OBJECT(IDirectDrawImpl, IDirectDraw, lpDD);
 256     This->ddraw_owner = pOwner;
 257     Main_DirectDraw_AddClipper(pOwner, This);
 258
 259     return DD_OK;
 260 }
 261
 262 HRESULT WINAPI Main_DirectDrawClipper_IsClipListChanged(
 263     LPDIRECTDRAWCLIPPER iface, BOOL* lpbChanged
 264 ) {
 265     IDirectDrawClipperImpl *This = (IDirectDrawClipperImpl *)iface;
 266     FIXME("(%p)->(%p),stub!\n",This,lpbChanged);
 267
 268     /* XXX What is safest? */
 269     *lpbChanged = FALSE;
 270
 271     return DD_OK;
 272 }
 273
 274 static const IDirectDrawClipperVtbl DDRAW_Clipper_VTable =
 275 {
 276     Main_DirectDrawClipper_QueryInterface,
 277     Main_DirectDrawClipper_AddRef,
 278     Main_DirectDrawClipper_Release,
 279     Main_DirectDrawClipper_GetClipList,
 280     Main_DirectDrawClipper_GetHWnd,
 281     Main_DirectDrawClipper_Initialize,
 282     Main_DirectDrawClipper_IsClipListChanged,
 283     Main_DirectDrawClipper_SetClipList,
 284     Main_DirectDrawClipper_SetHwnd
 285 };