1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #ifndef SkCGUtils_DEFINED
9 #define SkCGUtils_DEFINED
10
11 #include "include/core/SkImage.h"
12 #include "include/core/SkImageInfo.h"
13 #include "include/core/SkPixmap.h"
14 #include "include/core/SkSize.h"
15
16 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
17
18 #ifdef SK_BUILD_FOR_MAC
19 #include <ApplicationServices/ApplicationServices.h>
20 #endif
21
22 #ifdef SK_BUILD_FOR_IOS
23 #include <CoreGraphics/CoreGraphics.h>
24 #endif
25
26 class SkBitmap;
27 class SkData;
28 class SkPixmap;
29 class SkStreamRewindable;
30
31 SK_API CGContextRef SkCreateCGContext(const SkPixmap&);
32
33 /**
34 * Given a CGImage, allocate an SkBitmap and copy the image's pixels into it. If scaleToFit is not
35 * null, use it to determine the size of the bitmap, and scale the image to fill the bitmap.
36 * Otherwise use the image's width/height.
37 *
38 * On failure, return false, and leave bitmap unchanged.
39 */
40 SK_API bool SkCreateBitmapFromCGImage(SkBitmap* dst, CGImageRef src);
41
42 SK_API sk_sp<SkImage> SkMakeImageFromCGImage(CGImageRef);
43
44 /**
45 * Copy the pixels from src into the memory specified by info/rowBytes/dstPixels. On failure,
46 * return false (e.g. ImageInfo incompatible with src).
47 */
48 SK_API bool SkCopyPixelsFromCGImage(const SkImageInfo& info, size_t rowBytes, void* dstPixels,
49 CGImageRef src);
SkCopyPixelsFromCGImage(const SkPixmap & dst,CGImageRef src)50 static inline bool SkCopyPixelsFromCGImage(const SkPixmap& dst, CGImageRef src) {
51 return SkCopyPixelsFromCGImage(dst.info(), dst.rowBytes(), dst.writable_addr(), src);
52 }
53
54 /**
55 * Create an imageref from the specified bitmap using the specified colorspace.
56 * If space is NULL, then CGColorSpaceCreateDeviceRGB() is used.
57 */
58 SK_API CGImageRef SkCreateCGImageRefWithColorspace(const SkBitmap& bm,
59 CGColorSpaceRef space);
60
61 /**
62 * Create an imageref from the specified bitmap using the colorspace returned
63 * by CGColorSpaceCreateDeviceRGB()
64 */
SkCreateCGImageRef(const SkBitmap & bm)65 static inline CGImageRef SkCreateCGImageRef(const SkBitmap& bm) {
66 return SkCreateCGImageRefWithColorspace(bm, NULL);
67 }
68
69 /**
70 * Draw the bitmap into the specified CG context. The bitmap will be converted
71 * to a CGImage using the generic RGB colorspace. (x,y) specifies the position
72 * of the top-left corner of the bitmap. The bitmap is converted using the
73 * colorspace returned by CGColorSpaceCreateDeviceRGB()
74 */
75 void SkCGDrawBitmap(CGContextRef, const SkBitmap&, float x, float y);
76
77 /**
78 * Return a provider that wraps the specified stream.
79 * When the provider is finally deleted, it will delete the stream.
80 */
81 CGDataProviderRef SkCreateDataProviderFromStream(std::unique_ptr<SkStreamRewindable>);
82
83 CGDataProviderRef SkCreateDataProviderFromData(sk_sp<SkData>);
84
85 #endif // defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
86 #endif // SkCGUtils_DEFINED
87