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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/gfx/skia_utils_mac.h"
#include "base/logging.h"
#include "SkMatrix.h"
#include "SkRect.h"
namespace gfx {
CGAffineTransform SkMatrixToCGAffineTransform(const SkMatrix& matrix) {
// CGAffineTransforms don't support perspective transforms, so make sure
// we don't get those.
DCHECK(matrix[SkMatrix::kMPersp0] == 0.0f);
DCHECK(matrix[SkMatrix::kMPersp1] == 0.0f);
DCHECK(matrix[SkMatrix::kMPersp2] == 1.0f);
return CGAffineTransformMake(matrix[SkMatrix::kMScaleX],
matrix[SkMatrix::kMSkewY],
matrix[SkMatrix::kMSkewX],
matrix[SkMatrix::kMScaleY],
matrix[SkMatrix::kMTransX],
matrix[SkMatrix::kMTransY]);
}
SkIRect CGRectToSkIRect(const CGRect& rect) {
SkIRect sk_rect = {
SkScalarRound(rect.origin.x),
SkScalarRound(rect.origin.y),
SkScalarRound(rect.origin.x + rect.size.width),
SkScalarRound(rect.origin.y + rect.size.height)
};
return sk_rect;
}
SkRect CGRectToSkRect(const CGRect& rect) {
SkRect sk_rect = {
rect.origin.x,
rect.origin.y,
rect.origin.x + rect.size.width,
rect.origin.y + rect.size.height,
};
return sk_rect;
}
CGRect SkIRectToCGRect(const SkIRect& rect) {
CGRect cg_rect = {
{ rect.fLeft, rect.fTop },
{ rect.fRight - rect.fLeft, rect.fBottom - rect.fTop }
};
return cg_rect;
}
CGRect SkRectToCGRect(const SkRect& rect) {
CGRect cg_rect = {
{ rect.fLeft, rect.fTop },
{ rect.fRight - rect.fLeft, rect.fBottom - rect.fTop }
};
return cg_rect;
}
// Converts CGColorRef to the ARGB layout Skia expects.
SkColor CGColorRefToSkColor(CGColorRef color) {
DCHECK(CGColorGetNumberOfComponents(color) == 4);
const CGFloat *components = CGColorGetComponents(color);
return SkColorSetARGB(SkScalarRound(255.0 * components[3]), // alpha
SkScalarRound(255.0 * components[0]), // red
SkScalarRound(255.0 * components[1]), // green
SkScalarRound(255.0 * components[2])); // blue
}
// Converts ARGB to CGColorRef.
CGColorRef SkColorToCGColorRef(SkColor color) {
return CGColorCreateGenericRGB(SkColorGetR(color) / 255.0,
SkColorGetG(color) / 255.0,
SkColorGetB(color) / 255.0,
SkColorGetA(color) / 255.0);
}
} // namespace gfx
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