1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxDrawable.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,151 @@
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_DRAWABLE_H
1.10 +#define GFX_DRAWABLE_H
1.11 +
1.12 +#include "nsAutoPtr.h"
1.13 +#include "gfxRect.h"
1.14 +#include "gfxMatrix.h"
1.15 +#include "GraphicsFilter.h"
1.16 +#include "mozilla/gfx/2D.h"
1.17 +
1.18 +class gfxASurface;
1.19 +class gfxImageSurface;
1.20 +class gfxContext;
1.21 +class gfxPattern;
1.22 +
1.23 +/**
1.24 + * gfxDrawable
1.25 + * An Interface representing something that has an intrinsic size and can draw
1.26 + * itself repeatedly.
1.27 + */
1.28 +class gfxDrawable {
1.29 + NS_INLINE_DECL_REFCOUNTING(gfxDrawable)
1.30 +public:
1.31 + gfxDrawable(const gfxIntSize aSize)
1.32 + : mSize(aSize) {}
1.33 +
1.34 + /**
1.35 + * Draw into aContext filling aFillRect, possibly repeating, using aFilter.
1.36 + * aTransform is a userspace to "image"space matrix. For example, if Draw
1.37 + * draws using a gfxPattern, this is the matrix that should be set on the
1.38 + * pattern prior to rendering it.
1.39 + * @return whether drawing was successful
1.40 + */
1.41 + virtual bool Draw(gfxContext* aContext,
1.42 + const gfxRect& aFillRect,
1.43 + bool aRepeat,
1.44 + const GraphicsFilter& aFilter,
1.45 + const gfxMatrix& aTransform = gfxMatrix()) = 0;
1.46 + virtual already_AddRefed<gfxImageSurface> GetAsImageSurface() { return nullptr; }
1.47 + virtual gfxIntSize Size() { return mSize; }
1.48 +
1.49 +protected:
1.50 + // Protected destructor, to discourage deletion outside of Release():
1.51 + virtual ~gfxDrawable() {}
1.52 +
1.53 + const gfxIntSize mSize;
1.54 +};
1.55 +
1.56 +/**
1.57 + * gfxSurfaceDrawable
1.58 + * A convenience implementation of gfxDrawable for surfaces.
1.59 + */
1.60 +class gfxSurfaceDrawable : public gfxDrawable {
1.61 +public:
1.62 + gfxSurfaceDrawable(gfxASurface* aSurface, const gfxIntSize aSize,
1.63 + const gfxMatrix aTransform = gfxMatrix());
1.64 + gfxSurfaceDrawable(mozilla::gfx::DrawTarget* aDT, const gfxIntSize aSize,
1.65 + const gfxMatrix aTransform = gfxMatrix());
1.66 + gfxSurfaceDrawable(mozilla::gfx::SourceSurface* aSurface, const gfxIntSize aSize,
1.67 + const gfxMatrix aTransform = gfxMatrix());
1.68 + virtual ~gfxSurfaceDrawable() {}
1.69 +
1.70 + virtual bool Draw(gfxContext* aContext,
1.71 + const gfxRect& aFillRect,
1.72 + bool aRepeat,
1.73 + const GraphicsFilter& aFilter,
1.74 + const gfxMatrix& aTransform = gfxMatrix());
1.75 +
1.76 + virtual already_AddRefed<gfxImageSurface> GetAsImageSurface();
1.77 +
1.78 +protected:
1.79 + nsRefPtr<gfxASurface> mSurface;
1.80 + mozilla::RefPtr<mozilla::gfx::DrawTarget> mDrawTarget;
1.81 + mozilla::RefPtr<mozilla::gfx::SourceSurface> mSourceSurface;
1.82 + const gfxMatrix mTransform;
1.83 +};
1.84 +
1.85 +/**
1.86 + * gfxDrawingCallback
1.87 + * A simple drawing functor.
1.88 + */
1.89 +class gfxDrawingCallback {
1.90 + NS_INLINE_DECL_REFCOUNTING(gfxDrawingCallback)
1.91 +protected:
1.92 + // Protected destructor, to discourage deletion outside of Release():
1.93 + virtual ~gfxDrawingCallback() {}
1.94 +
1.95 +public:
1.96 + /**
1.97 + * Draw into aContext filling aFillRect using aFilter.
1.98 + * aTransform is a userspace to "image"space matrix. For example, if Draw
1.99 + * draws using a gfxPattern, this is the matrix that should be set on the
1.100 + * pattern prior to rendering it.
1.101 + * @return whether drawing was successful
1.102 + */
1.103 + virtual bool operator()(gfxContext* aContext,
1.104 + const gfxRect& aFillRect,
1.105 + const GraphicsFilter& aFilter,
1.106 + const gfxMatrix& aTransform = gfxMatrix()) = 0;
1.107 +
1.108 +};
1.109 +
1.110 +/**
1.111 + * gfxCallbackDrawable
1.112 + * A convenience implementation of gfxDrawable for callbacks.
1.113 + */
1.114 +class gfxCallbackDrawable : public gfxDrawable {
1.115 +public:
1.116 + gfxCallbackDrawable(gfxDrawingCallback* aCallback, const gfxIntSize aSize);
1.117 + virtual ~gfxCallbackDrawable() {}
1.118 +
1.119 + virtual bool Draw(gfxContext* aContext,
1.120 + const gfxRect& aFillRect,
1.121 + bool aRepeat,
1.122 + const GraphicsFilter& aFilter,
1.123 + const gfxMatrix& aTransform = gfxMatrix());
1.124 +
1.125 +protected:
1.126 + already_AddRefed<gfxSurfaceDrawable> MakeSurfaceDrawable(const GraphicsFilter aFilter = GraphicsFilter::FILTER_FAST);
1.127 +
1.128 + nsRefPtr<gfxDrawingCallback> mCallback;
1.129 + nsRefPtr<gfxSurfaceDrawable> mSurfaceDrawable;
1.130 +};
1.131 +
1.132 +/**
1.133 + * gfxPatternDrawable
1.134 + * A convenience implementation of gfxDrawable for patterns.
1.135 + */
1.136 +class gfxPatternDrawable : public gfxDrawable {
1.137 +public:
1.138 + gfxPatternDrawable(gfxPattern* aPattern,
1.139 + const gfxIntSize aSize);
1.140 + virtual ~gfxPatternDrawable();
1.141 +
1.142 + virtual bool Draw(gfxContext* aContext,
1.143 + const gfxRect& aFillRect,
1.144 + bool aRepeat,
1.145 + const GraphicsFilter& aFilter,
1.146 + const gfxMatrix& aTransform = gfxMatrix());
1.147 +
1.148 +protected:
1.149 + already_AddRefed<gfxCallbackDrawable> MakeCallbackDrawable();
1.150 +
1.151 + nsRefPtr<gfxPattern> mPattern;
1.152 +};
1.153 +
1.154 +#endif /* GFX_DRAWABLE_H */
