60b5dce199
BUG=skia: R=scroggo@google.com, halcanary@google.com Author: reed@google.com Review URL: https://codereview.chromium.org/243463005 git-svn-id: http://skia.googlecode.com/svn/trunk@14315 2bbb7eff-a529-9590-31e7-b0007b416f81
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkCGUtils_DEFINED
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#define SkCGUtils_DEFINED
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#include "SkSize.h"
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#include "SkImageInfo.h"
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#ifdef SK_BUILD_FOR_MAC
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#include <ApplicationServices/ApplicationServices.h>
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#endif
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#ifdef SK_BUILD_FOR_IOS
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#include <CoreGraphics/CoreGraphics.h>
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#endif
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class SkBitmap;
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class SkData;
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class SkStream;
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/**
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* Given a CGImage, allocate an SkBitmap and copy the image's pixels into it. If scaleToFit is not
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* null, use it to determine the size of the bitmap, and scale the image to fill the bitmap.
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* Otherwise use the image's width/height.
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*
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* On failure, return false, and leave bitmap unchanged.
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*/
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SK_API bool SkCreateBitmapFromCGImage(SkBitmap* dst, CGImageRef src, SkISize* scaleToFit = NULL);
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/**
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* Copy the pixels from src into the memory specified by info/rowBytes/dstPixels. On failure,
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* return false (e.g. ImageInfo incompatible with src).
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*/
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SK_API bool SkCopyPixelsFromCGImage(const SkImageInfo& info, size_t rowBytes, void* dstPixels,
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CGImageRef src);
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/**
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* Create an imageref from the specified bitmap using the specified colorspace.
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* If space is NULL, then CGColorSpaceCreateDeviceRGB() is used.
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*/
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SK_API CGImageRef SkCreateCGImageRefWithColorspace(const SkBitmap& bm,
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CGColorSpaceRef space);
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/**
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* Create an imageref from the specified bitmap using the colorspace returned
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* by CGColorSpaceCreateDeviceRGB()
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*/
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static inline CGImageRef SkCreateCGImageRef(const SkBitmap& bm) {
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return SkCreateCGImageRefWithColorspace(bm, NULL);
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}
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/**
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* Draw the bitmap into the specified CG context. The bitmap will be converted
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* to a CGImage using the generic RGB colorspace. (x,y) specifies the position
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* of the top-left corner of the bitmap. The bitmap is converted using the
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* colorspace returned by CGColorSpaceCreateDeviceRGB()
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*/
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void SkCGDrawBitmap(CGContextRef, const SkBitmap&, float x, float y);
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bool SkPDFDocumentToBitmap(SkStream* stream, SkBitmap* output);
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/**
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* Return a provider that wraps the specified stream. It will become an
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* owner of the stream, so the caller must still manage its ownership.
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*
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* To hand-off ownership of the stream to the provider, the caller must do
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* something like the following:
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*
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* SkStream* stream = new ...;
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* CGDataProviderRef provider = SkStreamToDataProvider(stream);
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* stream->unref();
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*
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* Now when the provider is finally deleted, it will delete the stream.
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*/
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CGDataProviderRef SkCreateDataProviderFromStream(SkStream*);
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CGDataProviderRef SkCreateDataProviderFromData(SkData*);
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#endif
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