mirror of
https://github.com/classilla/tenfourfox.git
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172 lines
6.0 KiB
C++
172 lines
6.0 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_DRAWABLE_H
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#define GFX_DRAWABLE_H
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#include "nsAutoPtr.h"
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#include "gfxRect.h"
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#include "gfxMatrix.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Types.h"
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class gfxContext;
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class gfxPattern;
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/**
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* gfxDrawable
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* An Interface representing something that has an intrinsic size and can draw
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* itself repeatedly.
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*/
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class gfxDrawable {
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NS_INLINE_DECL_REFCOUNTING(gfxDrawable)
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public:
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explicit gfxDrawable(const mozilla::gfx::IntSize aSize)
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: mSize(aSize) {}
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/**
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* Draw into aContext filling aFillRect, possibly repeating, using aFilter.
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* aTransform is a userspace to "image"space matrix. For example, if Draw
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* draws using a gfxPattern, this is the matrix that should be set on the
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* pattern prior to rendering it.
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* @return whether drawing was successful
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*/
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virtual bool Draw(gfxContext* aContext,
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const gfxRect& aFillRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity = 1.0,
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const gfxMatrix& aTransform = gfxMatrix()) = 0;
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virtual bool DrawWithSamplingRect(gfxContext* aContext,
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const gfxRect& aFillRect,
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const gfxRect& aSamplingRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity = 1.0)
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{
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return false;
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}
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virtual mozilla::gfx::IntSize Size() { return mSize; }
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protected:
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// Protected destructor, to discourage deletion outside of Release():
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virtual ~gfxDrawable() {}
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const mozilla::gfx::IntSize mSize;
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};
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/**
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* gfxSurfaceDrawable
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* A convenience implementation of gfxDrawable for surfaces.
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*/
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class gfxSurfaceDrawable : public gfxDrawable {
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public:
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gfxSurfaceDrawable(mozilla::gfx::SourceSurface* aSurface, const mozilla::gfx::IntSize aSize,
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const gfxMatrix aTransform = gfxMatrix());
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virtual ~gfxSurfaceDrawable() {}
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virtual bool Draw(gfxContext* aContext,
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const gfxRect& aFillRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity = 1.0,
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const gfxMatrix& aTransform = gfxMatrix());
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virtual bool DrawWithSamplingRect(gfxContext* aContext,
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const gfxRect& aFillRect,
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const gfxRect& aSamplingRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity = 1.0);
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protected:
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void DrawInternal(gfxContext* aContext,
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const gfxRect& aFillRect,
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const mozilla::gfx::IntRect& aSamplingRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity,
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const gfxMatrix& aTransform = gfxMatrix());
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RefPtr<mozilla::gfx::SourceSurface> mSourceSurface;
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const gfxMatrix mTransform;
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};
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/**
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* gfxDrawingCallback
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* A simple drawing functor.
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*/
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class gfxDrawingCallback {
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NS_INLINE_DECL_REFCOUNTING(gfxDrawingCallback)
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protected:
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// Protected destructor, to discourage deletion outside of Release():
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virtual ~gfxDrawingCallback() {}
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public:
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/**
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* Draw into aContext filling aFillRect using aFilter.
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* aTransform is a userspace to "image"space matrix. For example, if Draw
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* draws using a gfxPattern, this is the matrix that should be set on the
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* pattern prior to rendering it.
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* @return whether drawing was successful
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*/
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virtual bool operator()(gfxContext* aContext,
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const gfxRect& aFillRect,
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const mozilla::gfx::Filter& aFilter,
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const gfxMatrix& aTransform = gfxMatrix()) = 0;
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};
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/**
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* gfxCallbackDrawable
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* A convenience implementation of gfxDrawable for callbacks.
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*/
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class gfxCallbackDrawable : public gfxDrawable {
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public:
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gfxCallbackDrawable(gfxDrawingCallback* aCallback, const mozilla::gfx::IntSize aSize);
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virtual ~gfxCallbackDrawable() {}
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virtual bool Draw(gfxContext* aContext,
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const gfxRect& aFillRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity = 1.0,
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const gfxMatrix& aTransform = gfxMatrix());
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protected:
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already_AddRefed<gfxSurfaceDrawable> MakeSurfaceDrawable(mozilla::gfx::Filter aFilter = mozilla::gfx::Filter::LINEAR);
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RefPtr<gfxDrawingCallback> mCallback;
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RefPtr<gfxSurfaceDrawable> mSurfaceDrawable;
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};
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/**
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* gfxPatternDrawable
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* A convenience implementation of gfxDrawable for patterns.
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*/
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class gfxPatternDrawable : public gfxDrawable {
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public:
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gfxPatternDrawable(gfxPattern* aPattern,
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const mozilla::gfx::IntSize aSize);
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virtual ~gfxPatternDrawable();
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virtual bool Draw(gfxContext* aContext,
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const gfxRect& aFillRect,
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mozilla::gfx::ExtendMode aExtendMode,
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const mozilla::gfx::Filter& aFilter,
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gfxFloat aOpacity = 1.0,
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const gfxMatrix& aTransform = gfxMatrix());
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protected:
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already_AddRefed<gfxCallbackDrawable> MakeCallbackDrawable();
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RefPtr<gfxPattern> mPattern;
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};
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#endif /* GFX_DRAWABLE_H */
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