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#include "SkParsePaint.h"
9#include "SkTSearch.h"
10#include "SkParse.h"
11#include "SkImageDecoder.h"
12#include "SkGradientShader.h"
13
14static SkShader* inflate_shader(const SkDOM& dom, const SkDOM::Node* node)
15{
16	if ((node = dom.getFirstChild(node, "shader")) == NULL)
17		return NULL;
18
19	const char* str;
20
21	if (dom.hasAttr(node, "type", "linear-gradient"))
22	{
23		SkColor		colors[2];
24		SkPoint		pts[2];
25
26		colors[0] = colors[1] = SK_ColorBLACK;	// need to initialized the alpha to opaque, since FindColor doesn't set it
27		if ((str = dom.findAttr(node, "c0")) != NULL &&
28			SkParse::FindColor(str, &colors[0]) &&
29			(str = dom.findAttr(node, "c1")) != NULL &&
30			SkParse::FindColor(str, &colors[1]) &&
31			dom.findScalars(node, "p0", &pts[0].fX, 2) &&
32			dom.findScalars(node, "p1", &pts[1].fX, 2))
33		{
34			SkShader::TileMode	mode = SkShader::kClamp_TileMode;
35			int					index;
36
37			if ((index = dom.findList(node, "tile-mode", "clamp,repeat,mirror")) >= 0)
38				mode = (SkShader::TileMode)index;
39			return SkGradientShader::CreateLinear(pts, colors, NULL, 2, mode);
40		}
41	}
42	else if (dom.hasAttr(node, "type", "bitmap"))
43	{
44		if ((str = dom.findAttr(node, "src")) == NULL)
45			return NULL;
46
47		SkBitmap	bm;
48
49		if (SkImageDecoder::DecodeFile(str, &bm))
50		{
51			SkShader::TileMode	mode = SkShader::kRepeat_TileMode;
52			int					index;
53
54			if ((index = dom.findList(node, "tile-mode", "clamp,repeat,mirror")) >= 0)
55				mode = (SkShader::TileMode)index;
56
57			return SkShader::CreateBitmapShader(bm, mode, mode);
58		}
59	}
60	return NULL;
61}
62
63void SkPaint_Inflate(SkPaint* paint, const SkDOM& dom, const SkDOM::Node* node)
64{
65	SkASSERT(paint);
66	SkASSERT(&dom);
67	SkASSERT(node);
68
69	SkScalar x;
70
71	if (dom.findScalar(node, "stroke-width", &x))
72		paint->setStrokeWidth(x);
73	if (dom.findScalar(node, "text-size", &x))
74		paint->setTextSize(x);
75
76	bool	b;
77
78	SkASSERT("legacy: use is-stroke" && !dom.findBool(node, "is-frame", &b));
79
80	if (dom.findBool(node, "is-stroke", &b))
81		paint->setStyle(b ? SkPaint::kStroke_Style : SkPaint::kFill_Style);
82	if (dom.findBool(node, "is-antialias", &b))
83		paint->setAntiAlias(b);
84	if (dom.findBool(node, "is-lineartext", &b))
85		paint->setLinearText(b);
86
87	const char* str = dom.findAttr(node, "color");
88	if (str)
89	{
90		SkColor	c = paint->getColor();
91		if (SkParse::FindColor(str, &c))
92			paint->setColor(c);
93	}
94
95	// do this AFTER parsing for the color
96	if (dom.findScalar(node, "opacity", &x))
97	{
98		x = SkMaxScalar(0, SkMinScalar(x, SK_Scalar1));
99		paint->setAlpha(SkScalarRound(x * 255));
100	}
101
102	int	index = dom.findList(node, "text-anchor", "left,center,right");
103	if (index >= 0)
104		paint->setTextAlign((SkPaint::Align)index);
105
106	SkShader* shader = inflate_shader(dom, node);
107	if (shader)
108		paint->setShader(shader)->unref();
109}
110
111