gfx/2d/ConicGradientEffectD2D1.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GFX_CONICGRADIENTEFFECTD2D1_H_
   8 #define MOZILLA_GFX_CONICGRADIENTEFFECTD2D1_H_
   9
  10 #include <d2d1_1.h>
  11 #include <d2d1effectauthor.h>
  12 #include <d2d1effecthelpers.h>
  13
  14 #include "2D.h"
  15 #include "mozilla/Attributes.h"
  16
  17 // {fa4e3246-be57-4052-8c8b-881cc3633287}
  18 DEFINE_GUID(CLSID_ConicGradientEffect, 0xfa4e3246, 0xbe57, 0x4052, 0x8c, 0x8b,
  19             0x88, 0x1c, 0xc3, 0x63, 0x32, 0x87);
  20
  21 // Macro to keep our class nice and clean.
  22 #define SIMPLE_PROP(type, name)              \
  23  public:                                     \
  24   HRESULT Set##name(type a##name) {          \
  25     m##name = a##name;                       \
  26     return S_OK;                             \
  27   }                                          \
  28   type Get##name() const { return m##name; } \
  29                                              \
  30  private:                                    \
  31   type m##name;
  32
  33 namespace mozilla {
  34 namespace gfx {
  35
  36 enum {
  37   CONIC_PROP_STOP_COLLECTION = 0,
  38   CONIC_PROP_CENTER,
  39   CONIC_PROP_ANGLE,
  40   CONIC_PROP_START_OFFSET,
  41   CONIC_PROP_END_OFFSET,
  42   CONIC_PROP_TRANSFORM
  43 };
  44
  45 class ConicGradientEffectD2D1 final : public ID2D1EffectImpl,
  46                                       public ID2D1DrawTransform {
  47  public:
  48   // ID2D1EffectImpl
  49   IFACEMETHODIMP Initialize(ID2D1EffectContext* pContextInternal,
  50                             ID2D1TransformGraph* pTransformGraph);
  51   IFACEMETHODIMP PrepareForRender(D2D1_CHANGE_TYPE changeType);
  52   IFACEMETHODIMP SetGraph(ID2D1TransformGraph* pGraph);
  53
  54   // IUnknown
  55   IFACEMETHODIMP_(ULONG) AddRef();
  56   IFACEMETHODIMP_(ULONG) Release();
  57   IFACEMETHODIMP QueryInterface(REFIID riid, void** ppOutput);
  58
  59   // ID2D1Transform
  60   IFACEMETHODIMP MapInputRectsToOutputRect(
  61       const D2D1_RECT_L* pInputRects, const D2D1_RECT_L* pInputOpaqueSubRects,
  62       UINT32 inputRectCount, D2D1_RECT_L* pOutputRect,
  63       D2D1_RECT_L* pOutputOpaqueSubRect);
  64   IFACEMETHODIMP MapOutputRectToInputRects(const D2D1_RECT_L* pOutputRect,
  65                                            D2D1_RECT_L* pInputRects,
  66                                            UINT32 inputRectCount) const;
  67   IFACEMETHODIMP MapInvalidRect(UINT32 inputIndex, D2D1_RECT_L invalidInputRect,
  68                                 D2D1_RECT_L* pInvalidOutputRect) const;
  69
  70   // ID2D1TransformNode
  71   IFACEMETHODIMP_(UINT32) GetInputCount() const { return 1; }
  72
  73   // ID2D1DrawTransform
  74   IFACEMETHODIMP SetDrawInfo(ID2D1DrawInfo* pDrawInfo);
  75
  76   static HRESULT Register(ID2D1Factory1* aFactory);
  77   static void Unregister(ID2D1Factory1* aFactory);
  78   static HRESULT __stdcall CreateEffect(IUnknown** aEffectImpl);
  79
  80   HRESULT SetStopCollection(IUnknown* aStopCollection);
  81   IUnknown* GetStopCollection() const { return mStopCollection; }
  82
  83  private:
  84   already_AddRefed<ID2D1ResourceTexture> CreateGradientTexture();
  85
  86   ConicGradientEffectD2D1();
  87
  88   uint32_t mRefCount;
  89   RefPtr<ID2D1GradientStopCollection> mStopCollection;
  90   RefPtr<ID2D1EffectContext> mEffectContext;
  91   RefPtr<ID2D1DrawInfo> mDrawInfo;
  92   SIMPLE_PROP(D2D1_VECTOR_2F, Center);
  93   SIMPLE_PROP(FLOAT, Angle);
  94   SIMPLE_PROP(FLOAT, StartOffset);
  95   SIMPLE_PROP(FLOAT, EndOffset);
  96   SIMPLE_PROP(D2D_MATRIX_3X2_F, Transform);
  97 };
  98
  99 }  // namespace gfx
 100 }  // namespace mozilla
 101 #undef SIMPLE_PROP
 102
 103 #endif