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