diff -r 000000000000 -r 6474c204b198 gfx/thebes/gfxPattern.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/thebes/gfxPattern.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,142 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_PATTERN_H
+#define GFX_PATTERN_H
+
+#include "gfxTypes.h"
+
+#include "gfxMatrix.h"
+#include "mozilla/Alignment.h"
+#include "mozilla/gfx/2D.h"
+#include "GraphicsFilter.h"
+#include "nsISupportsImpl.h"
+#include "nsAutoPtr.h"
+#include "nsTArray.h"
+
+class gfxContext;
+class gfxASurface;
+struct gfxRGBA;
+typedef struct _cairo_pattern cairo_pattern_t;
+
+
+class gfxPattern MOZ_FINAL{
+    NS_INLINE_DECL_REFCOUNTING(gfxPattern)
+
+public:
+    gfxPattern(cairo_pattern_t *aPattern);
+    gfxPattern(const gfxRGBA& aColor);
+    gfxPattern(gfxASurface *surface); // from another surface
+    // linear
+    gfxPattern(gfxFloat x0, gfxFloat y0, gfxFloat x1, gfxFloat y1); // linear
+    gfxPattern(gfxFloat cx0, gfxFloat cy0, gfxFloat radius0,
+               gfxFloat cx1, gfxFloat cy1, gfxFloat radius1); // radial
+    gfxPattern(mozilla::gfx::SourceSurface *aSurface,
+               const mozilla::gfx::Matrix &aTransform); // Azure
+
+    cairo_pattern_t *CairoPattern();
+    void AddColorStop(gfxFloat offset, const gfxRGBA& c);
+    void SetColorStops(mozilla::RefPtr<mozilla::gfx::GradientStops> aStops);
+
+    // This should only be called on a cairo pattern that we want to use with
+    // Azure. We will read back the color stops from cairo and try to look
+    // them up in the cache.
+    void CacheColorStops(mozilla::gfx::DrawTarget *aDT);
+
+    void SetMatrix(const gfxMatrix& matrix);
+    gfxMatrix GetMatrix() const;
+    gfxMatrix GetInverseMatrix() const;
+
+    /* Get an Azure Pattern for the current Cairo pattern. aPattern transform
+     * specifies the transform that was set on the DrawTarget when the pattern
+     * was set. When this is nullptr it is assumed the transform is identical
+     * to the current transform.
+     */
+    mozilla::gfx::Pattern *GetPattern(mozilla::gfx::DrawTarget *aTarget,
+                                      mozilla::gfx::Matrix *aPatternTransform = nullptr);
+    bool IsOpaque();
+
+    enum GraphicsExtend {
+        EXTEND_NONE,
+        EXTEND_REPEAT,
+        EXTEND_REFLECT,
+        EXTEND_PAD,
+
+        // Our own private flag for setting either NONE or PAD,
+        // depending on what the platform does for NONE.  This is only
+        // relevant for surface patterns; for all other patterns, it
+        // behaves identical to PAD.  On MacOS X, this becomes "NONE",
+        // because Quartz does the thing that we want at image edges;
+        // similarily on the win32 printing surface, since
+        // everything's done with GDI there.  On other platforms, it
+        // usually becomes PAD.
+        EXTEND_PAD_EDGE = 1000
+    };
+
+    // none, repeat, reflect
+    void SetExtend(GraphicsExtend extend);
+    GraphicsExtend Extend() const;
+
+    enum GraphicsPatternType {
+        PATTERN_SOLID,
+        PATTERN_SURFACE,
+        PATTERN_LINEAR,
+        PATTERN_RADIAL
+    };
+
+    GraphicsPatternType GetType() const;
+
+    int CairoStatus();
+
+    void SetFilter(GraphicsFilter filter);
+    GraphicsFilter Filter() const;
+
+    /* returns TRUE if it succeeded */
+    bool GetSolidColor(gfxRGBA& aColor);
+
+    already_AddRefed<gfxASurface> GetSurface();
+
+    bool IsAzure() { return !mPattern; }
+
+    mozilla::TemporaryRef<mozilla::gfx::SourceSurface> GetAzureSurface() { return mSourceSurface; }
+
+private:
+    // Private destructor, to discourage deletion outside of Release():
+    ~gfxPattern();
+
+    cairo_pattern_t *mPattern;
+
+    /**
+     * aPatternTransform is the cairo pattern transform --- from user space at
+     * the time the pattern was set, to pattern space.
+     * aCurrentTransform is the DrawTarget's CTM --- from user space to device
+     * space.
+     * aOriginalTransform, if non-null, is the DrawTarget's TM when
+     * aPatternTransform was set --- user space to device space. If null, then
+     * the DrawTarget's CTM is the same as the TM when aPatternTransfrom was set.
+     * This function sets aPatternTransform to the Azure pattern transform ---
+     * from pattern space to current DrawTarget user space.
+     */
+    void AdjustTransformForPattern(mozilla::gfx::Matrix &aPatternTransform,
+                                   const mozilla::gfx::Matrix &aCurrentTransform,
+                                   const mozilla::gfx::Matrix *aOriginalTransform);
+
+    union {
+      mozilla::AlignedStorage2<mozilla::gfx::ColorPattern> mColorPattern;
+      mozilla::AlignedStorage2<mozilla::gfx::LinearGradientPattern> mLinearGradientPattern;
+      mozilla::AlignedStorage2<mozilla::gfx::RadialGradientPattern> mRadialGradientPattern;
+      mozilla::AlignedStorage2<mozilla::gfx::SurfacePattern> mSurfacePattern;
+    };
+
+    mozilla::gfx::Pattern *mGfxPattern;
+
+    mozilla::RefPtr<mozilla::gfx::SourceSurface> mSourceSurface;
+    mozilla::gfx::Matrix mTransform;
+    mozilla::RefPtr<mozilla::gfx::GradientStops> mStops;
+    GraphicsExtend mExtend;
+    mozilla::gfx::Filter mFilter;
+};
+
+#endif /* GFX_PATTERN_H */