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1 | |
2 /* | |
3 * Copyright 2006 The Android Open Source Project | |
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 | |
9 | |
10 #include "SkSVGGradient.h" | |
11 #include "SkSVGParser.h" | |
12 #include "SkSVGStop.h" | |
13 | |
14 SkSVGGradient::SkSVGGradient() { | |
15 } | |
16 | |
17 SkSVGElement* SkSVGGradient::getGradient() { | |
18 return this; | |
19 } | |
20 | |
21 bool SkSVGGradient::isDef() { | |
22 return true; | |
23 } | |
24 | |
25 bool SkSVGGradient::isNotDef() { | |
26 return false; | |
27 } | |
28 | |
29 void SkSVGGradient::translate(SkSVGParser& parser, bool defState) { | |
30 INHERITED::translate(parser, defState); | |
31 // !!! no support for 'objectBoundingBox' yet | |
32 bool first = true; | |
33 bool addedFirst = false; | |
34 bool addedLast = false; | |
35 SkString offsets("["); | |
36 SkString* lastOffset = NULL; | |
37 for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
38 SkASSERT((*ptr)->getType() == SkSVGType_Stop); | |
39 SkSVGStop* stop = (SkSVGStop*) *ptr; | |
40 if (first && stop->f_offset.equals("0") == false) { | |
41 addedFirst = true; | |
42 offsets.append("0,"); | |
43 } | |
44 SkString* thisOffset = &stop->f_offset; | |
45 if (lastOffset && thisOffset->equals(*lastOffset)) { | |
46 if (thisOffset->equals("1")) { | |
47 offsets.remove(offsets.size() - 2, 2); | |
48 offsets.append(".999,"); | |
49 } else { | |
50 SkASSERT(0); // !!! need to write this case | |
51 } | |
52 } | |
53 offsets.append(*thisOffset); | |
54 if (ptr == fChildren.end() - 1) { // last | |
55 if (stop->f_offset.equals("1") == false) { | |
56 offsets.append(",1"); | |
57 addedLast = true; | |
58 } | |
59 } else | |
60 offsets.appendUnichar(','); | |
61 first = false; | |
62 lastOffset = thisOffset; | |
63 } | |
64 offsets.appendUnichar(']'); | |
65 parser._addAttribute("offsets", offsets); | |
66 if (addedFirst) | |
67 parser.translate(*fChildren.begin(), defState); | |
68 for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) | |
69 parser.translate(*ptr, defState); | |
70 if (addedLast) | |
71 parser.translate(*(fChildren.end() - 1), defState); | |
72 } | |
73 | |
74 void SkSVGGradient::translateGradientUnits(SkString& units) { | |
75 // !!! no support for 'objectBoundingBox' yet | |
76 SkASSERT(strcmp(units.c_str(), "userSpaceOnUse") == 0); | |
77 } | |
78 | |
79 void SkSVGGradient::write(SkSVGParser& parser, SkString& baseColor) { | |
80 if (baseColor.c_str()[0] != '#') | |
81 return; | |
82 SkSVGPaint* saveHead = parser.fHead; | |
83 parser.fHead = &fPaintState; | |
84 parser.fSuppressPaint = true; | |
85 SkString originalID(f_id); | |
86 f_id.set("mask"); // write out gradient named given name + color (less initi
al #) | |
87 f_id.append(baseColor.c_str() + 1); | |
88 SkString originalColors; | |
89 for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
90 SkSVGStop* colorElement = (SkSVGStop*) *ptr; | |
91 SkString& color = colorElement->fPaintState.f_stopColor; | |
92 originalColors.append(color); | |
93 originalColors.appendUnichar(','); | |
94 SkASSERT(color.c_str()[0] == '#'); | |
95 SkString replacement; | |
96 replacement.set("0x"); | |
97 replacement.append(color.c_str() + 1, 2); // add stop colors using given
color, turning existing stop color into alpha | |
98 SkASSERT(baseColor.c_str()[0] == '#'); | |
99 SkASSERT(baseColor.size() == 7); | |
100 replacement.append(baseColor.c_str() + 1); | |
101 color.set(replacement); | |
102 } | |
103 translate(parser, true); | |
104 const char* originalPtr = originalColors.c_str(); // restore original gradie
nt values | |
105 for (SkSVGElement** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
106 SkSVGStop* color = (SkSVGStop*) *ptr; | |
107 const char* originalEnd = strchr(originalPtr, ','); | |
108 color->fPaintState.f_stopColor.set(originalPtr, originalEnd - originalPt
r); | |
109 originalPtr = originalEnd + 1; | |
110 } | |
111 f_id.set(originalID); | |
112 parser.fSuppressPaint = false; | |
113 parser.fHead = saveHead; | |
114 } | |
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