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       1             : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  * This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef GFX_PATTERN_H
       7             : #define GFX_PATTERN_H
       8             : 
       9             : #include "gfxTypes.h"
      10             : 
      11             : #include "gfxMatrix.h"
      12             : #include "mozilla/Alignment.h"
      13             : #include "mozilla/gfx/2D.h"
      14             : #include "mozilla/gfx/PatternHelpers.h"
      15             : #include "nsISupportsImpl.h"
      16             : #include "nsTArray.h"
      17             : 
      18             : typedef struct _cairo_pattern cairo_pattern_t;
      19             : 
      20             : 
      21             : class gfxPattern final{
      22         170 :     NS_INLINE_DECL_REFCOUNTING(gfxPattern)
      23             : 
      24             : public:
      25             :     explicit gfxPattern(const mozilla::gfx::Color& aColor);
      26             :     // linear
      27             :     gfxPattern(gfxFloat x0, gfxFloat y0, gfxFloat x1, gfxFloat y1); // linear
      28             :     gfxPattern(gfxFloat cx0, gfxFloat cy0, gfxFloat radius0,
      29             :                gfxFloat cx1, gfxFloat cy1, gfxFloat radius1); // radial
      30             :     gfxPattern(mozilla::gfx::SourceSurface *aSurface,
      31             :                const mozilla::gfx::Matrix &aPatternToUserSpace);
      32             : 
      33             :     void AddColorStop(gfxFloat offset, const mozilla::gfx::Color& c);
      34             :     void SetColorStops(mozilla::gfx::GradientStops* aStops);
      35             : 
      36             :     // This should only be called on a cairo pattern that we want to use with
      37             :     // Azure. We will read back the color stops from cairo and try to look
      38             :     // them up in the cache.
      39             :     void CacheColorStops(const mozilla::gfx::DrawTarget *aDT);
      40             : 
      41             :     void SetMatrix(const gfxMatrix& matrix);
      42             :     gfxMatrix GetMatrix() const;
      43             :     gfxMatrix GetInverseMatrix() const;
      44             : 
      45             :     /* Get an Azure Pattern for the current Cairo pattern. aPattern transform
      46             :      * specifies the transform that was set on the DrawTarget when the pattern
      47             :      * was set. When this is nullptr it is assumed the transform is identical
      48             :      * to the current transform.
      49             :      */
      50             :     mozilla::gfx::Pattern *GetPattern(const mozilla::gfx::DrawTarget *aTarget,
      51             :                                       const mozilla::gfx::Matrix *aOriginalUserToDevice = nullptr);
      52             :     bool IsOpaque();
      53             : 
      54             :     // clamp, repeat, reflect
      55             :     void SetExtend(mozilla::gfx::ExtendMode aExtend);
      56             : 
      57             :     void SetSamplingFilter(mozilla::gfx::SamplingFilter aSamplingFilter);
      58             :     mozilla::gfx::SamplingFilter SamplingFilter() const;
      59             : 
      60             :     /* returns TRUE if it succeeded */
      61             :     bool GetSolidColor(mozilla::gfx::Color& aColorOut);
      62             : 
      63             : private:
      64             :     // Private destructor, to discourage deletion outside of Release():
      65          40 :     ~gfxPattern() {}
      66             : 
      67             :     mozilla::gfx::GeneralPattern mGfxPattern;
      68             :     RefPtr<mozilla::gfx::SourceSurface> mSourceSurface;
      69             :     mozilla::gfx::Matrix mPatternToUserSpace;
      70             :     RefPtr<mozilla::gfx::GradientStops> mStops;
      71             :     nsTArray<mozilla::gfx::GradientStop> mStopsList;
      72             :     mozilla::gfx::ExtendMode mExtend;
      73             : };
      74             : 
      75             : #endif /* GFX_PATTERN_H */