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 "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_stroke_style *impl_from_ID2D1StrokeStyle(ID2D1StrokeStyle *iface)
  27 {
  28     return CONTAINING_RECORD(iface, struct d2d_stroke_style, ID2D1StrokeStyle_iface);
  29 }
  30
  31 static HRESULT STDMETHODCALLTYPE d2d_stroke_style_QueryInterface(ID2D1StrokeStyle *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_ID2D1StrokeStyle)
  36             || IsEqualGUID(iid, &IID_ID2D1Resource)
  37             || IsEqualGUID(iid, &IID_IUnknown))
  38     {
  39         ID2D1StrokeStyle_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_stroke_style_AddRef(ID2D1StrokeStyle *iface)
  51 {
  52     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  53     ULONG refcount = InterlockedIncrement(&style->refcount);
  54
  55     TRACE("%p increasing refcount to %u.\n", iface, refcount);
  56
  57     return refcount;
  58 }
  59
  60 static ULONG STDMETHODCALLTYPE d2d_stroke_style_Release(ID2D1StrokeStyle *iface)
  61 {
  62     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  63     ULONG refcount = InterlockedDecrement(&style->refcount);
  64
  65     TRACE("%p decreasing refcount to %u.\n", iface, refcount);
  66
  67     if (!refcount)
  68     {
  69         ID2D1Factory_Release(style->factory);
  70         if (style->desc.dashStyle == D2D1_DASH_STYLE_CUSTOM)
  71             heap_free(style->dashes);
  72         heap_free(style);
  73     }
  74
  75     return refcount;
  76 }
  77
  78 static void STDMETHODCALLTYPE d2d_stroke_style_GetFactory(ID2D1StrokeStyle *iface, ID2D1Factory **factory)
  79 {
  80     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  81
  82     TRACE("iface %p, factory %p.\n", iface, factory);
  83
  84     ID2D1Factory_AddRef(*factory = style->factory);
  85 }
  86
  87 static D2D1_CAP_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetStartCap(ID2D1StrokeStyle *iface)
  88 {
  89     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  90
  91     TRACE("iface %p.\n", iface);
  92
  93     return style->desc.startCap;
  94 }
  95
  96 static D2D1_CAP_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetEndCap(ID2D1StrokeStyle *iface)
  97 {
  98     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
  99
 100     TRACE("iface %p.\n", iface);
 101
 102     return style->desc.endCap;
 103 }
 104
 105 static D2D1_CAP_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetDashCap(ID2D1StrokeStyle *iface)
 106 {
 107     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 108
 109     TRACE("iface %p.\n", iface);
 110
 111     return style->desc.dashCap;
 112 }
 113
 114 static float STDMETHODCALLTYPE d2d_stroke_style_GetMiterLimit(ID2D1StrokeStyle *iface)
 115 {
 116     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 117
 118     TRACE("iface %p.\n", iface);
 119
 120     return style->desc.miterLimit;
 121 }
 122
 123 static D2D1_LINE_JOIN STDMETHODCALLTYPE d2d_stroke_style_GetLineJoin(ID2D1StrokeStyle *iface)
 124 {
 125     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 126
 127     TRACE("iface %p.\n", iface);
 128
 129     return style->desc.lineJoin;
 130 }
 131
 132 static float STDMETHODCALLTYPE d2d_stroke_style_GetDashOffset(ID2D1StrokeStyle *iface)
 133 {
 134     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 135
 136     TRACE("iface %p.\n", iface);
 137
 138     return style->desc.dashOffset;
 139 }
 140
 141 static D2D1_DASH_STYLE STDMETHODCALLTYPE d2d_stroke_style_GetDashStyle(ID2D1StrokeStyle *iface)
 142 {
 143     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 144
 145     TRACE("iface %p.\n", iface);
 146
 147     return style->desc.dashStyle;
 148 }
 149
 150 static UINT32 STDMETHODCALLTYPE d2d_stroke_style_GetDashesCount(ID2D1StrokeStyle *iface)
 151 {
 152     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 153
 154     TRACE("iface %p.\n", iface);
 155
 156     return style->dash_count;
 157 }
 158
 159 static void STDMETHODCALLTYPE d2d_stroke_style_GetDashes(ID2D1StrokeStyle *iface, float *dashes, UINT32 dash_count)
 160 {
 161     struct d2d_stroke_style *style = impl_from_ID2D1StrokeStyle(iface);
 162
 163     TRACE("iface %p, dashes %p, count %u.\n", iface, dashes, dash_count);
 164
 165     memcpy(dashes, style->dashes, min(style->dash_count, dash_count) * sizeof(*dashes));
 166     if (dash_count > style->dash_count)
 167         memset(dashes + style->dash_count, 0, (dash_count - style->dash_count) * sizeof(*dashes));
 168 }
 169
 170 static const struct ID2D1StrokeStyleVtbl d2d_stroke_style_vtbl =
 171 {
 172     d2d_stroke_style_QueryInterface,
 173     d2d_stroke_style_AddRef,
 174     d2d_stroke_style_Release,
 175     d2d_stroke_style_GetFactory,
 176     d2d_stroke_style_GetStartCap,
 177     d2d_stroke_style_GetEndCap,
 178     d2d_stroke_style_GetDashCap,
 179     d2d_stroke_style_GetMiterLimit,
 180     d2d_stroke_style_GetLineJoin,
 181     d2d_stroke_style_GetDashOffset,
 182     d2d_stroke_style_GetDashStyle,
 183     d2d_stroke_style_GetDashesCount,
 184     d2d_stroke_style_GetDashes,
 185 };
 186
 187 HRESULT d2d_stroke_style_init(struct d2d_stroke_style *style, ID2D1Factory *factory,
 188         const D2D1_STROKE_STYLE_PROPERTIES *desc, const float *dashes, UINT32 dash_count)
 189 {
 190     static const struct
 191     {
 192         UINT32 dash_count;
 193         float dashes[6];
 194     }
 195     builtin_dash_styles[] =
 196     {
 197         /* D2D1_DASH_STYLE_SOLID */        { 0 },
 198         /* D2D1_DASH_STYLE_DASH */         { 2, {2.0f, 2.0f}},
 199         /* D2D1_DASH_STYLE_DOT */          { 2, {0.0f, 2.0f}},
 200         /* D2D1_DASH_STYLE_DASH_DOT */     { 4, {2.0f, 2.0f, 0.0f, 2.0f}},
 201         /* D2D1_DASH_STYLE_DASH_DOT_DOT */ { 6, {2.0f, 2.0f, 0.0f, 2.0f, 0.0f, 2.0f}},
 202     };
 203
 204     if (desc->dashStyle > D2D1_DASH_STYLE_CUSTOM)
 205         return E_INVALIDARG;
 206
 207     style->ID2D1StrokeStyle_iface.lpVtbl = &d2d_stroke_style_vtbl;
 208     style->refcount = 1;
 209
 210     if (desc->dashStyle == D2D1_DASH_STYLE_CUSTOM)
 211     {
 212         if (!dashes || !dash_count)
 213             return E_INVALIDARG;
 214
 215         if (!(style->dashes = heap_calloc(dash_count, sizeof(*style->dashes))))
 216             return E_OUTOFMEMORY;
 217         memcpy(style->dashes, dashes, dash_count * sizeof(*style->dashes));
 218         style->dash_count = dash_count;
 219     }
 220     else
 221     {
 222         if (dashes)
 223             return E_INVALIDARG;
 224
 225         style->dashes = (float *)builtin_dash_styles[desc->dashStyle].dashes;
 226         style->dash_count = builtin_dash_styles[desc->dashStyle].dash_count;
 227     }
 228
 229     ID2D1Factory_AddRef(style->factory = factory);
 230     style->desc = *desc;
 231
 232     return S_OK;
 233 }