wined3d: Reorganize IWineD3DImpl_CheckDeviceFormat() a bit.
[wine] / dlls / wined3d / clipper.c
1 /* IWineD3DClipper 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 #include <stdio.h>
24 #ifdef HAVE_FLOAT_H
25 # include <float.h>
26 #endif
27 #include "wined3d_private.h"
28
29 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
30
31 static HRESULT WINAPI IWineD3DClipperImpl_QueryInterface(IWineD3DClipper *iface, REFIID riid, void **object)
32 {
33     TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(riid), object);
34
35     if (IsEqualGUID(riid, &IID_IWineD3DClipper)
36             || IsEqualGUID(riid, &IID_IWineD3DBase)
37             || IsEqualGUID(riid, &IID_IUnknown))
38     {
39         IUnknown_AddRef(iface);
40         *object = iface;
41         return S_OK;
42     }
43
44     WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(riid));
45
46     *object = NULL;
47     return E_NOINTERFACE;
48 }
49
50 static ULONG WINAPI IWineD3DClipperImpl_AddRef(IWineD3DClipper *iface )
51 {
52     IWineD3DClipperImpl *This = (IWineD3DClipperImpl *)iface;
53     ULONG ref = InterlockedIncrement(&This->ref);
54
55     TRACE("(%p)->() incrementing from %u.\n", This, ref - 1);
56
57     return ref;
58 }
59
60 static ULONG WINAPI IWineD3DClipperImpl_Release(IWineD3DClipper *iface)
61 {
62     IWineD3DClipperImpl *This = (IWineD3DClipperImpl *)iface;
63     ULONG ref = InterlockedDecrement(&This->ref);
64
65     TRACE("(%p)->() decrementing from %u.\n", This, ref + 1);
66
67     if (ref == 0)
68     {
69         HeapFree(GetProcessHeap(), 0, This);
70         return 0;
71     }
72     else return ref;
73 }
74
75 static HRESULT WINAPI IWineD3DClipperImpl_GetParent(IWineD3DClipper *iface, IUnknown **Parent)
76 {
77     IWineD3DClipperImpl *This = (IWineD3DClipperImpl *)iface;
78     TRACE("(%p)->(%p)\n", This, Parent);
79
80     *Parent = This->Parent;
81     IUnknown_AddRef(*Parent);
82     return WINED3D_OK;
83 }
84
85 static HRESULT WINAPI IWineD3DClipperImpl_SetHwnd(IWineD3DClipper *iface, DWORD Flags, HWND hWnd)
86 {
87     IWineD3DClipperImpl *This = (IWineD3DClipperImpl *)iface;
88
89     TRACE("(%p)->(0x%08x,%p)\n", This, Flags, hWnd);
90     if( Flags )
91     {
92         FIXME("Flags = 0x%08x, not supported.\n",Flags);
93         return WINED3DERR_INVALIDCALL;
94     }
95
96     This->hWnd = hWnd;
97     return WINED3D_OK;
98 }
99
100 static HRESULT WINAPI IWineD3DClipperImpl_GetClipList(IWineD3DClipper *iface, const RECT *Rect,
101         RGNDATA *ClipList, DWORD *Size)
102 {
103     IWineD3DClipperImpl *This = (IWineD3DClipperImpl *)iface;
104     TRACE("(%p,%p,%p,%p)\n", This, Rect, ClipList, Size);
105
106     if (This->hWnd)
107     {
108         HDC hDC = GetDCEx(This->hWnd, NULL, DCX_WINDOW);
109         if (hDC)
110         {
111             HRGN hRgn = CreateRectRgn(0,0,0,0);
112             if (GetRandomRgn(hDC, hRgn, SYSRGN))
113             {
114                 if (GetVersion() & 0x80000000)
115                 {
116                     /* map region to screen coordinates */
117                     POINT org;
118                     GetDCOrgEx( hDC, &org );
119                     OffsetRgn( hRgn, org.x, org.y );
120                 }
121                 if (Rect)
122                 {
123                     HRGN hRgnClip = CreateRectRgn(Rect->left, Rect->top,
124                         Rect->right, Rect->bottom);
125                     CombineRgn(hRgn, hRgn, hRgnClip, RGN_AND);
126                     DeleteObject(hRgnClip);
127                 }
128                 *Size = GetRegionData(hRgn, *Size, ClipList);
129             }
130             DeleteObject(hRgn);
131             ReleaseDC(This->hWnd, hDC);
132         }
133         return WINED3D_OK;
134     }
135     else
136     {
137         static int warned = 0;
138         if (warned++ < 10)
139             FIXME("(%p,%p,%p,%p),stub!\n",This,Rect,ClipList,Size);
140         if (Size) *Size=0;
141         return WINEDDERR_NOCLIPLIST;
142     }
143 }
144
145 static HRESULT WINAPI IWineD3DClipperImpl_SetClipList(IWineD3DClipper *iface, const RGNDATA *rgn, DWORD Flags)
146 {
147     static int warned = 0;
148
149     if (warned++ < 10 || rgn == NULL)
150         FIXME("iface %p, region %p, flags %#x stub!\n", iface, rgn, Flags);
151
152     return WINED3D_OK;
153 }
154
155 static HRESULT WINAPI IWineD3DClipperImpl_GetHwnd(IWineD3DClipper *iface, HWND *hwnd)
156 {
157     IWineD3DClipperImpl *This = (IWineD3DClipperImpl *)iface;
158     TRACE("(%p)->(%p)\n", This, hwnd);
159
160     *hwnd = This->hWnd;
161     return WINED3D_OK;
162 }
163
164 static HRESULT WINAPI IWineD3DClipperImpl_IsClipListChanged(IWineD3DClipper *iface, BOOL *changed)
165 {
166     FIXME("iface %p, changed %p stub!\n", iface, changed);
167
168     /* XXX What is safest? */
169     *changed = FALSE;
170
171     return WINED3D_OK;
172 }
173
174 static const IWineD3DClipperVtbl IWineD3DClipper_Vtbl =
175 {
176     IWineD3DClipperImpl_QueryInterface,
177     IWineD3DClipperImpl_AddRef,
178     IWineD3DClipperImpl_Release,
179     IWineD3DClipperImpl_GetParent,
180     IWineD3DClipperImpl_GetClipList,
181     IWineD3DClipperImpl_GetHwnd,
182     IWineD3DClipperImpl_IsClipListChanged,
183     IWineD3DClipperImpl_SetClipList,
184     IWineD3DClipperImpl_SetHwnd
185 };
186
187 IWineD3DClipper* WINAPI WineDirect3DCreateClipper(IUnknown *Parent)
188 {
189     IWineD3DClipperImpl *obj;
190
191     TRACE("Creating clipper, parent %p\n", Parent);
192     obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*obj));
193     if(!obj)
194     {
195         ERR("Out of memory when trying to allocate a WineD3D Clipper\n");
196         return NULL;
197     }
198
199     obj->lpVtbl = &IWineD3DClipper_Vtbl;
200     obj->Parent = Parent;
201
202     IWineD3DClipper_AddRef((IWineD3DClipper *)obj);
203     return (IWineD3DClipper *) obj;
204 }