1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
// 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.
// This file declares helper routines for using Skia in WebKit.
#ifndef SkiaUtils_h
#define SkiaUtils_h
#include "base/float_util.h"
#include "GraphicsContext.h"
#include "SkPath.h"
#include "SkShader.h"
#include "PlatformContextSkia.h"
class SkRegion;
// Converts the given WebCore point to a Skia point.
void WebCorePointToSkiaPoint(const WebCore::IntPoint& src, SkPoint* dst);
void WebCorePointToSkiaPoint(const WebCore::FloatPoint& src, SkPoint* dst);
// Converts from various types of WebCore rectangles to the corresponding
// Skia rectangle types.
void WebCoreRectToSkiaRect(const WebCore::IntRect& src, SkRect* dst);
void WebCoreRectToSkiaRect(const WebCore::FloatRect& src, SkRect* dst);
void WebCoreRectToSkiaRect(const WebCore::IntRect& src, SkIRect* dst);
void WebCoreRectToSkiaRect(const WebCore::FloatRect& src, SkIRect* dst);
// Converts a WebCore |Path| to an SkPath.
inline SkPath* PathToSkPath(const WebCore::Path& path) {
return reinterpret_cast<SkPath*>(path.platformPath());
}
// Converts a WebCore composit operation (WebCore::Composite*) to the
// corresponding Skia type.
SkPorterDuff::Mode WebCoreCompositeToSkiaComposite(WebCore::CompositeOperator);
// Converts a WebCore tiling rule to the corresponding Skia tiling mode.
SkShader::TileMode WebCoreTileToSkiaTile(WebCore::Image::TileRule);
// Converts Android colors to WebKit ones.
WebCore::Color SkPMColorToWebCoreColor(SkPMColor pm);
// A platform graphics context is actually a PlatformContextSkia.
inline PlatformContextSkia* PlatformContextToPlatformContextSkia(
PlatformGraphicsContext* context) {
return reinterpret_cast<PlatformContextSkia*>(context);
}
// Skia has problems when passed infinite, etc floats, filter them to 0.
inline SkScalar WebCoreFloatToSkScalar(const float& f) {
return SkFloatToScalar(base::IsFinite(f) ? f : 0);
}
inline SkScalar WebCoreDoubleToSkScalar(const double& d) {
return SkDoubleToScalar(base::IsFinite(d) ? d : 0);
}
// Intersects the given source rect with the region, returning the smallest
// rectangular region that encompases the result.
//
// src_rect and dest_rect can be the same.
void IntersectRectAndRegion(const SkRegion& region, const SkRect& src_rect,
SkRect* dest_rect);
// Computes the smallest rectangle that, which when drawn to the given canvas,
// will cover the same area as the source rectangle. It will clip to the canvas'
// clip, doing the necessary coordinate transforms.
//
// src_rect and dest_rect can be the same.
void ClipRectToCanvas(const SkCanvas& canvas, const SkRect& src_rect,
SkRect* dest_rect);
// Determine if a given WebKit point is contained in a path
bool SkPathContainsPoint(SkPath* orig_path, WebCore::FloatPoint point, SkPath::FillType ft);
#endif // SkiaUtils_h
|
