gfx/skia/skia/include/utils/mac/SkCGUtils.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 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#ifndef SkCGUtils_DEFINED
#define SkCGUtils_DEFINED

#include "SkSize.h"
#include "SkImageInfo.h"

#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)

#ifdef SK_BUILD_FOR_MAC
#include <ApplicationServices/ApplicationServices.h>
#endif

#ifdef SK_BUILD_FOR_IOS
#include <CoreGraphics/CoreGraphics.h>
#endif

class SkBitmap;
class SkData;
class SkStreamRewindable;

/**
 *  Given a CGImage, allocate an SkBitmap and copy the image's pixels into it. If scaleToFit is not
 *  null, use it to determine the size of the bitmap, and scale the image to fill the bitmap.
 *  Otherwise use the image's width/height.
 *
 *  On failure, return false, and leave bitmap unchanged.
 */
SK_API bool SkCreateBitmapFromCGImage(SkBitmap* dst, CGImageRef src, SkISize* scaleToFit = NULL);

/**
 *  Copy the pixels from src into the memory specified by info/rowBytes/dstPixels. On failure,
 *  return false (e.g. ImageInfo incompatible with src).
 */
SK_API bool SkCopyPixelsFromCGImage(const SkImageInfo& info, size_t rowBytes, void* dstPixels,
                                    CGImageRef src);

/**
 *  Create an imageref from the specified bitmap using the specified colorspace.
 *  If space is NULL, then CGColorSpaceCreateDeviceRGB() is used.
 */
SK_API CGImageRef SkCreateCGImageRefWithColorspace(const SkBitmap& bm,
                                                   CGColorSpaceRef space);

/**
 *  Create an imageref from the specified bitmap using the colorspace returned
 *  by CGColorSpaceCreateDeviceRGB()
 */
static inline CGImageRef SkCreateCGImageRef(const SkBitmap& bm) {
    return SkCreateCGImageRefWithColorspace(bm, NULL);
}

/**
 *  Draw the bitmap into the specified CG context. The bitmap will be converted
 *  to a CGImage using the generic RGB colorspace. (x,y) specifies the position
 *  of the top-left corner of the bitmap. The bitmap is converted using the
 *  colorspace returned by CGColorSpaceCreateDeviceRGB()
 */
void SkCGDrawBitmap(CGContextRef, const SkBitmap&, float x, float y);

/**
 *  Return a provider that wraps the specified stream.
 *  When the provider is finally deleted, it will delete the stream.
 */
CGDataProviderRef SkCreateDataProviderFromStream(std::unique_ptr<SkStreamRewindable>);

CGDataProviderRef SkCreateDataProviderFromData(sk_sp<SkData>);

#endif  // defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
#endif  // SkCGUtils_DEFINED