gecko-dev/gfx/thebes/gfxDrawable.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Markus Stange.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef GFX_DRAWABLE_H
#define GFX_DRAWABLE_H
#include "nsISupportsImpl.h"
#include "nsAutoPtr.h"
#include "gfxTypes.h"
#include "gfxRect.h"
#include "gfxColor.h"
#include "gfxMatrix.h"
#include "gfxPattern.h"
class gfxASurface;
class gfxContext;
/**
* gfxDrawable
* An Interface representing something that has an intrinsic size and can draw
* itself repeatedly.
*/
class THEBES_API gfxDrawable {
NS_INLINE_DECL_REFCOUNTING(gfxDrawable)
public:
gfxDrawable(const gfxIntSize aSize)
: mSize(aSize) {}
virtual ~gfxDrawable() {}
/**
* Draw into aContext filling aFillRect, possibly repeating, using aFilter.
* aTransform is a userspace to "image"space matrix. For example, if Draw
* draws using a gfxPattern, this is the matrix that should be set on the
* pattern prior to rendering it.
* @return whether drawing was successful
*/
virtual PRBool Draw(gfxContext* aContext,
const gfxRect& aFillRect,
PRBool aRepeat,
const gfxPattern::GraphicsFilter& aFilter,
const gfxMatrix& aTransform = gfxMatrix()) = 0;
virtual gfxIntSize Size() { return mSize; }
protected:
const gfxIntSize mSize;
};
/**
* gfxSurfaceDrawable
* A convenience implementation of gfxDrawable for surfaces.
*/
class THEBES_API gfxSurfaceDrawable : public gfxDrawable {
public:
gfxSurfaceDrawable(gfxASurface* aSurface, const gfxIntSize aSize,
const gfxMatrix aTransform = gfxMatrix());
virtual ~gfxSurfaceDrawable() {}
virtual PRBool Draw(gfxContext* aContext,
const gfxRect& aFillRect,
PRBool aRepeat,
const gfxPattern::GraphicsFilter& aFilter,
const gfxMatrix& aTransform = gfxMatrix());
protected:
nsRefPtr<gfxASurface> mSurface;
const gfxMatrix mTransform;
};
/**
* gfxDrawingCallback
* A simple drawing functor.
*/
class THEBES_API gfxDrawingCallback {
NS_INLINE_DECL_REFCOUNTING(gfxDrawingCallback)
public:
virtual ~gfxDrawingCallback() {}
/**
* Draw into aContext filling aFillRect using aFilter.
* aTransform is a userspace to "image"space matrix. For example, if Draw
* draws using a gfxPattern, this is the matrix that should be set on the
* pattern prior to rendering it.
* @return whether drawing was successful
*/
virtual PRBool operator()(gfxContext* aContext,
const gfxRect& aFillRect,
const gfxPattern::GraphicsFilter& aFilter,
const gfxMatrix& aTransform = gfxMatrix()) = 0;
};
/**
* gfxSurfaceDrawable
* A convenience implementation of gfxDrawable for callbacks.
*/
class THEBES_API gfxCallbackDrawable : public gfxDrawable {
public:
gfxCallbackDrawable(gfxDrawingCallback* aCallback, const gfxIntSize aSize);
virtual ~gfxCallbackDrawable() {}
virtual PRBool Draw(gfxContext* aContext,
const gfxRect& aFillRect,
PRBool aRepeat,
const gfxPattern::GraphicsFilter& aFilter,
const gfxMatrix& aTransform = gfxMatrix());
protected:
already_AddRefed<gfxSurfaceDrawable> MakeSurfaceDrawable(const gfxPattern::GraphicsFilter aFilter = gfxPattern::FILTER_FAST);
nsRefPtr<gfxDrawingCallback> mCallback;
nsRefPtr<gfxSurfaceDrawable> mSurfaceDrawable;
};
/**
* gfxPatternDrawable
* A convenience implementation of gfxDrawable for patterns.
*/
class THEBES_API gfxPatternDrawable : public gfxDrawable {
public:
gfxPatternDrawable(gfxPattern* aPattern,
const gfxIntSize aSize);
virtual ~gfxPatternDrawable() {}
virtual PRBool Draw(gfxContext* aContext,
const gfxRect& aFillRect,
PRBool aRepeat,
const gfxPattern::GraphicsFilter& aFilter,
const gfxMatrix& aTransform = gfxMatrix());
protected:
already_AddRefed<gfxCallbackDrawable> MakeCallbackDrawable();
nsRefPtr<gfxPattern> mPattern;
};
#endif /* GFX_DRAWABLE_H */