1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxPattern.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,142 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef GFX_PATTERN_H
1.10 +#define GFX_PATTERN_H
1.11 +
1.12 +#include "gfxTypes.h"
1.13 +
1.14 +#include "gfxMatrix.h"
1.15 +#include "mozilla/Alignment.h"
1.16 +#include "mozilla/gfx/2D.h"
1.17 +#include "GraphicsFilter.h"
1.18 +#include "nsISupportsImpl.h"
1.19 +#include "nsAutoPtr.h"
1.20 +#include "nsTArray.h"
1.21 +
1.22 +class gfxContext;
1.23 +class gfxASurface;
1.24 +struct gfxRGBA;
1.25 +typedef struct _cairo_pattern cairo_pattern_t;
1.26 +
1.27 +
1.28 +class gfxPattern MOZ_FINAL{
1.29 + NS_INLINE_DECL_REFCOUNTING(gfxPattern)
1.30 +
1.31 +public:
1.32 + gfxPattern(cairo_pattern_t *aPattern);
1.33 + gfxPattern(const gfxRGBA& aColor);
1.34 + gfxPattern(gfxASurface *surface); // from another surface
1.35 + // linear
1.36 + gfxPattern(gfxFloat x0, gfxFloat y0, gfxFloat x1, gfxFloat y1); // linear
1.37 + gfxPattern(gfxFloat cx0, gfxFloat cy0, gfxFloat radius0,
1.38 + gfxFloat cx1, gfxFloat cy1, gfxFloat radius1); // radial
1.39 + gfxPattern(mozilla::gfx::SourceSurface *aSurface,
1.40 + const mozilla::gfx::Matrix &aTransform); // Azure
1.41 +
1.42 + cairo_pattern_t *CairoPattern();
1.43 + void AddColorStop(gfxFloat offset, const gfxRGBA& c);
1.44 + void SetColorStops(mozilla::RefPtr<mozilla::gfx::GradientStops> aStops);
1.45 +
1.46 + // This should only be called on a cairo pattern that we want to use with
1.47 + // Azure. We will read back the color stops from cairo and try to look
1.48 + // them up in the cache.
1.49 + void CacheColorStops(mozilla::gfx::DrawTarget *aDT);
1.50 +
1.51 + void SetMatrix(const gfxMatrix& matrix);
1.52 + gfxMatrix GetMatrix() const;
1.53 + gfxMatrix GetInverseMatrix() const;
1.54 +
1.55 + /* Get an Azure Pattern for the current Cairo pattern. aPattern transform
1.56 + * specifies the transform that was set on the DrawTarget when the pattern
1.57 + * was set. When this is nullptr it is assumed the transform is identical
1.58 + * to the current transform.
1.59 + */
1.60 + mozilla::gfx::Pattern *GetPattern(mozilla::gfx::DrawTarget *aTarget,
1.61 + mozilla::gfx::Matrix *aPatternTransform = nullptr);
1.62 + bool IsOpaque();
1.63 +
1.64 + enum GraphicsExtend {
1.65 + EXTEND_NONE,
1.66 + EXTEND_REPEAT,
1.67 + EXTEND_REFLECT,
1.68 + EXTEND_PAD,
1.69 +
1.70 + // Our own private flag for setting either NONE or PAD,
1.71 + // depending on what the platform does for NONE. This is only
1.72 + // relevant for surface patterns; for all other patterns, it
1.73 + // behaves identical to PAD. On MacOS X, this becomes "NONE",
1.74 + // because Quartz does the thing that we want at image edges;
1.75 + // similarily on the win32 printing surface, since
1.76 + // everything's done with GDI there. On other platforms, it
1.77 + // usually becomes PAD.
1.78 + EXTEND_PAD_EDGE = 1000
1.79 + };
1.80 +
1.81 + // none, repeat, reflect
1.82 + void SetExtend(GraphicsExtend extend);
1.83 + GraphicsExtend Extend() const;
1.84 +
1.85 + enum GraphicsPatternType {
1.86 + PATTERN_SOLID,
1.87 + PATTERN_SURFACE,
1.88 + PATTERN_LINEAR,
1.89 + PATTERN_RADIAL
1.90 + };
1.91 +
1.92 + GraphicsPatternType GetType() const;
1.93 +
1.94 + int CairoStatus();
1.95 +
1.96 + void SetFilter(GraphicsFilter filter);
1.97 + GraphicsFilter Filter() const;
1.98 +
1.99 + /* returns TRUE if it succeeded */
1.100 + bool GetSolidColor(gfxRGBA& aColor);
1.101 +
1.102 + already_AddRefed<gfxASurface> GetSurface();
1.103 +
1.104 + bool IsAzure() { return !mPattern; }
1.105 +
1.106 + mozilla::TemporaryRef<mozilla::gfx::SourceSurface> GetAzureSurface() { return mSourceSurface; }
1.107 +
1.108 +private:
1.109 + // Private destructor, to discourage deletion outside of Release():
1.110 + ~gfxPattern();
1.111 +
1.112 + cairo_pattern_t *mPattern;
1.113 +
1.114 + /**
1.115 + * aPatternTransform is the cairo pattern transform --- from user space at
1.116 + * the time the pattern was set, to pattern space.
1.117 + * aCurrentTransform is the DrawTarget's CTM --- from user space to device
1.118 + * space.
1.119 + * aOriginalTransform, if non-null, is the DrawTarget's TM when
1.120 + * aPatternTransform was set --- user space to device space. If null, then
1.121 + * the DrawTarget's CTM is the same as the TM when aPatternTransfrom was set.
1.122 + * This function sets aPatternTransform to the Azure pattern transform ---
1.123 + * from pattern space to current DrawTarget user space.
1.124 + */
1.125 + void AdjustTransformForPattern(mozilla::gfx::Matrix &aPatternTransform,
1.126 + const mozilla::gfx::Matrix &aCurrentTransform,
1.127 + const mozilla::gfx::Matrix *aOriginalTransform);
1.128 +
1.129 + union {
1.130 + mozilla::AlignedStorage2<mozilla::gfx::ColorPattern> mColorPattern;
1.131 + mozilla::AlignedStorage2<mozilla::gfx::LinearGradientPattern> mLinearGradientPattern;
1.132 + mozilla::AlignedStorage2<mozilla::gfx::RadialGradientPattern> mRadialGradientPattern;
1.133 + mozilla::AlignedStorage2<mozilla::gfx::SurfacePattern> mSurfacePattern;
1.134 + };
1.135 +
1.136 + mozilla::gfx::Pattern *mGfxPattern;
1.137 +
1.138 + mozilla::RefPtr<mozilla::gfx::SourceSurface> mSourceSurface;
1.139 + mozilla::gfx::Matrix mTransform;
1.140 + mozilla::RefPtr<mozilla::gfx::GradientStops> mStops;
1.141 + GraphicsExtend mExtend;
1.142 + mozilla::gfx::Filter mFilter;
1.143 +};
1.144 +
1.145 +#endif /* GFX_PATTERN_H */
