dlls/d2d1/layer.c

   1 /*
   2  * Copyright 2017 Henri Verbeet for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include "d2d1_private.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(d2d);
  25
  26 static inline struct d2d_layer *impl_from_ID2D1Layer(ID2D1Layer *iface)
  27 {
  28     return CONTAINING_RECORD(iface, struct d2d_layer, ID2D1Layer_iface);
  29 }
  30
  31 static HRESULT STDMETHODCALLTYPE d2d_layer_QueryInterface(ID2D1Layer *iface, REFIID iid, void **out)
  32 {
  33     TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
  34
  35     if (IsEqualGUID(iid, &IID_ID2D1Layer)
  36             || IsEqualGUID(iid, &IID_ID2D1Resource)
  37             || IsEqualGUID(iid, &IID_IUnknown))
  38     {
  39         ID2D1Layer_AddRef(iface);
  40         *out = iface;
  41         return S_OK;
  42     }
  43
  44     WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
  45
  46     *out = NULL;
  47     return E_NOINTERFACE;
  48 }
  49
  50 static ULONG STDMETHODCALLTYPE d2d_layer_AddRef(ID2D1Layer *iface)
  51 {
  52     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  53     ULONG refcount = InterlockedIncrement(&layer->refcount);
  54
  55     TRACE("%p increasing refcount to %u.\n", iface, refcount);
  56
  57     return refcount;
  58 }
  59
  60 static ULONG STDMETHODCALLTYPE d2d_layer_Release(ID2D1Layer *iface)
  61 {
  62     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  63     ULONG refcount = InterlockedDecrement(&layer->refcount);
  64
  65     TRACE("%p decreasing refcount to %u.\n", iface, refcount);
  66
  67     if (!refcount)
  68     {
  69         ID2D1Factory_Release(layer->factory);
  70         heap_free(layer);
  71     }
  72
  73     return refcount;
  74 }
  75
  76 static void STDMETHODCALLTYPE d2d_layer_GetFactory(ID2D1Layer *iface, ID2D1Factory **factory)
  77 {
  78     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  79
  80     TRACE("iface %p, factory %p.\n", iface, factory);
  81
  82     ID2D1Factory_AddRef(*factory = layer->factory);
  83 }
  84
  85 static D2D1_SIZE_F * STDMETHODCALLTYPE d2d_layer_GetSize(ID2D1Layer *iface, D2D1_SIZE_F *size)
  86 {
  87     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  88
  89     TRACE("iface %p, size %p.\n", iface, size);
  90
  91     *size = layer->size;
  92     return size;
  93 }
  94
  95 static const struct ID2D1LayerVtbl d2d_layer_vtbl =
  96 {
  97     d2d_layer_QueryInterface,
  98     d2d_layer_AddRef,
  99     d2d_layer_Release,
 100     d2d_layer_GetFactory,
 101     d2d_layer_GetSize,
 102 };
 103
 104 HRESULT d2d_layer_create(ID2D1Factory *factory, const D2D1_SIZE_F *size, struct d2d_layer **layer)
 105 {
 106     if (!(*layer = heap_alloc_zero(sizeof(**layer))))
 107         return E_OUTOFMEMORY;
 108
 109     (*layer)->ID2D1Layer_iface.lpVtbl = &d2d_layer_vtbl;
 110     (*layer)->refcount = 1;
 111     ID2D1Factory_AddRef((*layer)->factory = factory);
 112     if (size)
 113         (*layer)->size = *size;
 114
 115     TRACE("Created layer %p.\n", *layer);
 116
 117     return S_OK;
 118 }