gfx/skia/skia/include/effects/SkXfermodeImageFilter.h
author Wes Kocher <wkocher@mozilla.com>
Wed, 10 May 2017 10:01:18 -0700
changeset 407965 ce2218406119c36a551e3faea4e192186ee46cc5
parent 407937 af6f19870b2a00759ac1d83dedc3db57213abfee
child 408167 0ded74baeaf23d7985401fe9bbabdb3d9385ac22
permissions -rw-r--r--
Backed out 9 changesets (bug 1340627) for graphical glitches a=backout Backed out changeset 0b1371055c7f (bug 1340627) Backed out changeset f152be1fadb7 (bug 1340627) Backed out changeset c691e2ab6a0c (bug 1340627) Backed out changeset 3cb4bceb8d79 (bug 1340627) Backed out changeset 026aadd76d06 (bug 1340627) Backed out changeset fdbd5d281287 (bug 1340627) Backed out changeset 75fb0d9858a9 (bug 1340627) Backed out changeset 0d4ec7d38a00 (bug 1340627) Backed out changeset af6f19870b2a (bug 1340627) MozReview-Commit-ID: 9dHr7xMZezY

/*
 * Copyright 2013 The Android Open Source Project
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkXfermodeImageFilter_DEFINED
#define SkXfermodeImageFilter_DEFINED

#include "SkBlendMode.h"
#include "SkImageFilter.h"

class SkXfermode;

/**
 * This filter takes an xfermode, and uses it to composite the foreground
 * over the background.  If foreground or background is NULL, the input
 * bitmap (src) is used instead.
 */
class SK_API SkXfermodeImageFilter {
public:
    static sk_sp<SkImageFilter> Make(SkBlendMode, sk_sp<SkImageFilter> background,
                                     sk_sp<SkImageFilter> foreground,
                                     const SkImageFilter::CropRect* cropRect);
    static sk_sp<SkImageFilter> Make(SkBlendMode mode, sk_sp<SkImageFilter> background) {
        return Make(mode, std::move(background), nullptr, nullptr);
    }

    static sk_sp<SkImageFilter> MakeArithmetic(float k1, float k2, float k3, float k4,
                                               bool enforcePMColor,
                                               sk_sp<SkImageFilter> background,
                                               sk_sp<SkImageFilter> foreground,
                                               const SkImageFilter::CropRect* cropRect);
    static sk_sp<SkImageFilter> MakeArithmetic(float k1, float k2, float k3, float k4,
                                               bool enforcePMColor,
                                               sk_sp<SkImageFilter> background) {
        return MakeArithmetic(k1, k2, k3, k4, enforcePMColor, std::move(background),
                              nullptr, nullptr);
    }

#ifdef SK_SUPPORT_LEGACY_XFERMODE_OBJECT
    static sk_sp<SkImageFilter> Make(sk_sp<SkXfermode> mode, sk_sp<SkImageFilter> background,
                                     sk_sp<SkImageFilter> foreground,
                                     const SkImageFilter::CropRect* cropRect);
    static sk_sp<SkImageFilter> Make(sk_sp<SkXfermode> mode, sk_sp<SkImageFilter> background) {
        return Make(std::move(mode), std::move(background), nullptr, nullptr);
    }

#endif

#ifdef SK_SUPPORT_LEGACY_XFERMODE_PTR
    static SkImageFilter* Create(SkXfermode* mode, SkImageFilter* background,
                                 SkImageFilter* foreground = NULL,
                                 const SkImageFilter::CropRect* cropRect = NULL) {
        return Make(sk_ref_sp(mode), 
                    sk_ref_sp(background),
                    sk_ref_sp(foreground),
                    cropRect).release();
    }
#endif
#ifdef SK_SUPPORT_LEGACY_IMAGEFILTER_PTR
    static sk_sp<SkImageFilter> Make(sk_sp<SkXfermode> mode, SkImageFilter* background,
                                     SkImageFilter* foreground,
                                     const SkImageFilter::CropRect* cropRect) {
        return Make(std::move(mode),
                    sk_ref_sp(background),
                    sk_ref_sp(foreground),
                    cropRect);
    }
    static sk_sp<SkImageFilter> Make(sk_sp<SkXfermode> mode, SkImageFilter* background) {
        return Make(std::move(mode), sk_ref_sp(background));
    }
#endif

    SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP();

private:
    SkXfermodeImageFilter();    // can't instantiate
};

#endif