DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (5216dd412535)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169
/* -*- 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 */