dlls/d2d1/stroke.c

   1 /*
   2  * Copyright 2014 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_stroke_style *impl_from_ID2D1StrokeStyle(ID2D1StrokeStyle *iface)
  24 {
  25     return CONTAINING_RECORD(iface, struct d2d_stroke_style, ID2D1StrokeStyle_iface);
  26 }
  27
  28 static HRESULT STDMETHODCALLTYPE d2d_stroke_style_QueryInterface(ID2D1StrokeStyle *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_ID2D1StrokeStyle)
  33             || IsEqualGUID(iid, &IID_ID2D1Resource)
  34             || IsEqualGUID(iid, &IID_IUnknown))
  35     {
  36         ID2D1StrokeStyle_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_stroke_style_AddRef(ID2D1StrokeStyle *iface)
  48 {
  49     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  50     ULONG refcount = InterlockedIncrement(&style->refcount);
  51
  52     TRACE("%p increasing refcount to %u.\n", iface, refcount);
  53
  54     return refcount;
  55 }
  56
  57 static ULONG STDMETHODCALLTYPE d2d_stroke_style_Release(ID2D1StrokeStyle *iface)
  58 {
  59     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  60     ULONG refcount = InterlockedDecrement(&style->refcount);
  61
  62     TRACE("%p decreasing refcount to %u.\n", iface, refcount);
  63
  64     if (!refcount)
  65     {
  66         ID2D1Factory_Release(style->factory);
  67         if (style->desc.dashStyle == D2D1_DASH_STYLE_CUSTOM)
  68             heap_free(style->dashes);
  69         heap_free(style);
  70     }
  71
  72     return refcount;
  73 }
  74
  75 static void STDMETHODCALLTYPE d2d_stroke_style_GetFactory(ID2D1StrokeStyle *iface, ID2D1Factory **factory)
  76 {
  77     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  78
  79     TRACE("iface %p, factory %p.\n", iface, factory);
  80
  81     ID2D1Factory_AddRef(*factory = style->factory);
  82 }
  83
  84 static D2D1_CAP_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetStartCap(ID2D1StrokeStyle *iface)
  85 {
  86     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  87
  88     TRACE("iface %p.\n", iface);
  89
  90     return style->desc.startCap;
  91 }
  92
  93 static D2D1_CAP_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetEndCap(ID2D1StrokeStyle *iface)
  94 {
  95     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  96
  97     TRACE("iface %p.\n", iface);
  98
  99     return style->desc.endCap;
 100 }
 101
 102 static D2D1_CAP_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetDashCap(ID2D1StrokeStyle *iface)
 103 {
 104     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 105
 106     TRACE("iface %p.\n", iface);
 107
 108     return style->desc.dashCap;
 109 }
 110
 111 static float STDMETHODCALLTYPE d2d_stroke_style_GetMiterLimit(ID2D1StrokeStyle *iface)
 112 {
 113     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 114
 115     TRACE("iface %p.\n", iface);
 116
 117     return style->desc.miterLimit;
 118 }
 119
 120 static D2D1_LINE_JOIN STDMETHODCALLTYPE d2d_stroke_style_GetLineJoin(ID2D1StrokeStyle *iface)
 121 {
 122     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 123
 124     TRACE("iface %p.\n", iface);
 125
 126     return style->desc.lineJoin;
 127 }
 128
 129 static float STDMETHODCALLTYPE d2d_stroke_style_GetDashOffset(ID2D1StrokeStyle *iface)
 130 {
 131     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 132
 133     TRACE("iface %p.\n", iface);
 134
 135     return style->desc.dashOffset;
 136 }
 137
 138 static D2D1_DASH_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetDashStyle(ID2D1StrokeStyle *iface)
 139 {
 140     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 141
 142     TRACE("iface %p.\n", iface);
 143
 144     return style->desc.dashStyle;
 145 }
 146
 147 static UINT32 STDMETHODCALLTYPE d2d_stroke_style_GetDashesCount(ID2D1StrokeStyle *iface)
 148 {
 149     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 150
 151     TRACE("iface %p.\n", iface);
 152
 153     return style->dash_count;
 154 }
 155
 156 static void STDMETHODCALLTYPE d2d_stroke_style_GetDashes(ID2D1StrokeStyle *iface, float *dashes, UINT32 dash_count)
 157 {
 158     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 159
 160     TRACE("iface %p, dashes %p, count %u.\n", iface, dashes, dash_count);
 161
 162     memcpy(dashes, style->dashes, min(style->dash_count, dash_count) * sizeof(*dashes));
 163     if (dash_count > style->dash_count)
 164         memset(dashes + style->dash_count, 0, (dash_count - style->dash_count) * sizeof(*dashes));
 165 }
 166
 167 static const struct ID2D1StrokeStyleVtbl d2d_stroke_style_vtbl =
 168 {
 169     d2d_stroke_style_QueryInterface,
 170     d2d_stroke_style_AddRef,
 171     d2d_stroke_style_Release,
 172     d2d_stroke_style_GetFactory,
 173     d2d_stroke_style_GetStartCap,
 174     d2d_stroke_style_GetEndCap,
 175     d2d_stroke_style_GetDashCap,
 176     d2d_stroke_style_GetMiterLimit,
 177     d2d_stroke_style_GetLineJoin,
 178     d2d_stroke_style_GetDashOffset,
 179     d2d_stroke_style_GetDashStyle,
 180     d2d_stroke_style_GetDashesCount,
 181     d2d_stroke_style_GetDashes,
 182 };
 183
 184 HRESULT d2d_stroke_style_init(struct d2d_stroke_style *style, ID2D1Factory *factory,
 185         const D2D1_STROKE_STYLE_PROPERTIES *desc, const float *dashes, UINT32 dash_count)
 186 {
 187     static const struct
 188     {
 189         UINT32 dash_count;
 190         float dashes[6];
 191     }
 192     builtin_dash_styles[] =
 193     {
 194         /* D2D1_DASH_STYLE_SOLID */        { 0 },
 195         /* D2D1_DASH_STYLE_DASH */         { 2, {2.0f, 2.0f}},
 196         /* D2D1_DASH_STYLE_DOT */          { 2, {0.0f, 2.0f}},
 197         /* D2D1_DASH_STYLE_DASH_DOT */     { 4, {2.0f, 2.0f, 0.0f, 2.0f}},
 198         /* D2D1_DASH_STYLE_DASH_DOT_DOT */ { 6, {2.0f, 2.0f, 0.0f, 2.0f, 0.0f, 2.0f}},
 199     };
 200
 201     if (desc->dashStyle > D2D1_DASH_STYLE_CUSTOM)
 202         return E_INVALIDARG;
 203
 204     style->ID2D1StrokeStyle_iface.lpVtbl = &d2d_stroke_style_vtbl;
 205     style->refcount = 1;
 206
 207     if (desc->dashStyle == D2D1_DASH_STYLE_CUSTOM)
 208     {
 209         if (!dashes || !dash_count)
 210             return E_INVALIDARG;
 211
 212         if (!(style->dashes = heap_calloc(dash_count, sizeof(*style->dashes))))
 213             return E_OUTOFMEMORY;
 214         memcpy(style->dashes, dashes, dash_count * sizeof(*style->dashes));
 215         style->dash_count = dash_count;
 216     }
 217     else
 218     {
 219         if (dashes)
 220             return E_INVALIDARG;
 221
 222         style->dashes = (float *)builtin_dash_styles[desc->dashStyle].dashes;
 223         style->dash_count = builtin_dash_styles[desc->dashStyle].dash_count;
 224     }
 225
 226     ID2D1Factory_AddRef(style->factory = factory);
 227     style->desc = *desc;
 228
 229     return S_OK;
 230 }