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 "d2d1_private.h"
  20
  21 WINE_DEFAULT_DEBUG_CHANNEL(d2d);
  22
  23 static inline struct d2d_layer *impl_from_ID2D1Layer(ID2D1Layer *iface)
  24 {
  25     return CONTAINING_RECORD(iface, struct d2d_layer, ID2D1Layer_iface);
  26 }
  27
  28 static HRESULT STDMETHODCALLTYPE d2d_layer_QueryInterface(ID2D1Layer *iface, REFIID iid, void **out)
  29 {
  30     TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
  31
  32     if (IsEqualGUID(iid, &IID_ID2D1Layer)
  33             || IsEqualGUID(iid, &IID_ID2D1Resource)
  34             || IsEqualGUID(iid, &IID_IUnknown))
  35     {
  36         ID2D1Layer_AddRef(iface);
  37         *out = iface;
  38         return S_OK;
  39     }
  40
  41     WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
  42
  43     *out = NULL;
  44     return E_NOINTERFACE;
  45 }
  46
  47 static ULONG STDMETHODCALLTYPE d2d_layer_AddRef(ID2D1Layer *iface)
  48 {
  49     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  50     ULONG refcount = InterlockedIncrement(&layer->refcount);
  51
  52     TRACE("%p increasing refcount to %u.\n", iface, refcount);
  53
  54     return refcount;
  55 }
  56
  57 static ULONG STDMETHODCALLTYPE d2d_layer_Release(ID2D1Layer *iface)
  58 {
  59     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  60     ULONG refcount = InterlockedDecrement(&layer->refcount);
  61
  62     TRACE("%p decreasing refcount to %u.\n", iface, refcount);
  63
  64     if (!refcount)
  65     {
  66         ID2D1Factory_Release(layer->factory);
  67         heap_free(layer);
  68     }
  69
  70     return refcount;
  71 }
  72
  73 static void STDMETHODCALLTYPE d2d_layer_GetFactory(ID2D1Layer *iface, ID2D1Factory **factory)
  74 {
  75     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  76
  77     TRACE("iface %p, factory %p.\n", iface, factory);
  78
  79     ID2D1Factory_AddRef(*factory = layer->factory);
  80 }
  81
  82 static D2D1_SIZE_F * STDMETHODCALLTYPE d2d_layer_GetSize(ID2D1Layer *iface, D2D1_SIZE_F *size)
  83 {
  84     struct d2d_layer *layer = impl_from_ID2D1Layer(iface);
  85
  86     TRACE("iface %p, size %p.\n", iface, size);
  87
  88     *size = layer->size;
  89     return size;
  90 }
  91
  92 static const struct ID2D1LayerVtbl d2d_layer_vtbl =
  93 {
  94     d2d_layer_QueryInterface,
  95     d2d_layer_AddRef,
  96     d2d_layer_Release,
  97     d2d_layer_GetFactory,
  98     d2d_layer_GetSize,
  99 };
 100
 101 HRESULT d2d_layer_create(ID2D1Factory *factory, const D2D1_SIZE_F *size, struct d2d_layer **layer)
 102 {
 103     if (!(*layer = heap_alloc_zero(sizeof(**layer))))
 104         return E_OUTOFMEMORY;
 105
 106     (*layer)->ID2D1Layer_iface.lpVtbl = &d2d_layer_vtbl;
 107     (*layer)->refcount = 1;
 108     ID2D1Factory_AddRef((*layer)->factory = factory);
 109     if (size)
 110         (*layer)->size = *size;
 111
 112     TRACE("Created layer %p.\n", *layer);
 113
 114     return S_OK;
 115 }