skia/ext/skia_utils_mac.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef SKIA_EXT_SKIA_UTILS_MAC_H_
   6 #define SKIA_EXT_SKIA_UTILS_MAC_H_
   7
   8 #include <ApplicationServices/ApplicationServices.h>
   9 #include <vector>
  10
  11 #include "third_party/skia/include/core/SkBitmap.h"
  12 #include "third_party/skia/include/core/SkColor.h"
  13
  14 struct SkIRect;
  15 struct SkPoint;
  16 struct SkRect;
  17 class SkCanvas;
  18 class SkMatrix;
  19 #ifdef __LP64__
  20 typedef CGSize NSSize;
  21 #else
  22 typedef struct _NSSize NSSize;
  23 #endif
  24
  25 #ifdef __OBJC__
  26 @class NSBitmapImageRep;
  27 @class NSImage;
  28 @class NSImageRep;
  29 @class NSColor;
  30 #else
  31 class NSBitmapImageRep;
  32 class NSImage;
  33 class NSImageRep;
  34 class NSColor;
  35 #endif
  36
  37 namespace gfx {
  38
  39 // Converts a Skia point to a CoreGraphics CGPoint.
  40 // Both use same in-memory format.
  41 inline const CGPoint& SkPointToCGPoint(const SkPoint& point) {
  42   return reinterpret_cast<const CGPoint&>(point);
  43 }
  44
  45 // Converts a CoreGraphics point to a Skia CGPoint.
  46 // Both use same in-memory format.
  47 inline const SkPoint& CGPointToSkPoint(const CGPoint& point) {
  48   return reinterpret_cast<const SkPoint&>(point);
  49 }
  50
  51 // Matrix converters.
  52 SK_API CGAffineTransform SkMatrixToCGAffineTransform(const SkMatrix& matrix);
  53
  54 // Rectangle converters.
  55 SK_API SkRect CGRectToSkRect(const CGRect& rect);
  56
  57 // Converts a Skia rect to a CoreGraphics CGRect.
  58 CGRect SkIRectToCGRect(const SkIRect& rect);
  59 CGRect SkRectToCGRect(const SkRect& rect);
  60
  61 // Converts CGColorRef to the ARGB layout Skia expects.
  62 SK_API SkColor CGColorRefToSkColor(CGColorRef color);
  63
  64 // Converts ARGB to CGColorRef.
  65 SK_API CGColorRef CGColorCreateFromSkColor(SkColor color);
  66
  67 // Converts NSColor to ARGB. Returns raw rgb values and does no colorspace
  68 // conversion. Only valid for colors in calibrated and device color spaces.
  69 SK_API SkColor NSDeviceColorToSkColor(NSColor* color);
  70
  71 // Converts ARGB to NSColor.
  72 SK_API NSColor* SkColorToCalibratedNSColor(SkColor color);
  73 SK_API NSColor* SkColorToDeviceNSColor(SkColor color);
  74
  75 // Converts a CGImage to a SkBitmap.
  76 SK_API SkBitmap CGImageToSkBitmap(CGImageRef image);
  77
  78 // Draws an NSImage with a given size into a SkBitmap.
  79 SK_API SkBitmap NSImageToSkBitmap(NSImage* image, NSSize size, bool is_opaque);
  80
  81 // Draws an NSImageRep with a given size into a SkBitmap.
  82 SK_API SkBitmap NSImageRepToSkBitmap(
  83     NSImageRep* image, NSSize size, bool is_opaque);
  84
  85 // Given an SkBitmap, return an autoreleased NSBitmapImageRep in the generic
  86 // color space.
  87 SK_API NSBitmapImageRep* SkBitmapToNSBitmapImageRep(const SkBitmap& image);
  88
  89 SK_API NSBitmapImageRep* SkBitmapToNSBitmapImageRepWithColorSpace(
  90     const SkBitmap& skiaBitmap,
  91     CGColorSpaceRef colorSpace);
  92
  93 // Given an SkBitmap and a color space, return an autoreleased NSImage.
  94 SK_API NSImage* SkBitmapToNSImageWithColorSpace(const SkBitmap& icon,
  95                                                 CGColorSpaceRef colorSpace);
  96
  97 // Given an SkBitmap, return an autoreleased NSImage in the generic color space.
  98 // DEPRECATED, use SkBitmapToNSImageWithColorSpace() instead.
  99 // TODO(thakis): Remove this -- http://crbug.com/69432
 100 SK_API NSImage* SkBitmapToNSImage(const SkBitmap& icon);
 101
 102 // Converts a SkCanvas temporarily to a CGContext
 103 class SK_API SkiaBitLocker {
 104  public:
 105   explicit SkiaBitLocker(SkCanvas* canvas);
 106   ~SkiaBitLocker();
 107   CGContextRef cgContext();
 108
 109  private:
 110   void releaseIfNeeded();
 111   SkCanvas* canvas_;
 112   CGContextRef cgContext_;
 113   SkBitmap bitmap_;
 114   bool useDeviceBits_;
 115 };
 116
 117
 118 }  // namespace gfx
 119
 120 #endif  // SKIA_EXT_SKIA_UTILS_MAC_H_