1/* libs/graphics/svg/SkSVGSVG.cpp
2**
3** Copyright 2006, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#include "SkSVGSVG.h"
19#include "SkParse.h"
20#include "SkRect.h"
21#include "SkSVGParser.h"
22
23const SkSVGAttribute SkSVGSVG::gAttributes[] = {
24    SVG_LITERAL_ATTRIBUTE(enable-background, f_enable_background),
25    SVG_ATTRIBUTE(height),
26    SVG_ATTRIBUTE(overflow),
27    SVG_ATTRIBUTE(width),
28    SVG_ATTRIBUTE(version),
29    SVG_ATTRIBUTE(viewBox),
30    SVG_LITERAL_ATTRIBUTE(xml:space, f_xml_space),
31    SVG_ATTRIBUTE(xmlns),
32    SVG_LITERAL_ATTRIBUTE(xmlns:xlink, f_xml_xlink)
33};
34
35DEFINE_SVG_INFO(SVG)
36
37
38bool SkSVGSVG::isFlushable() {
39    return false;
40}
41
42void SkSVGSVG::translate(SkSVGParser& parser, bool defState) {
43    SkScalar height, width;
44    SkScalar viewBox[4];
45    const char* hSuffix = SkParse::FindScalar(f_height.c_str(), &height);
46    if (strcmp(hSuffix, "pt") == 0)
47        height = SkScalarMulDiv(height, SK_Scalar1 * 72, SK_Scalar1 * 96);
48    const char* wSuffix = SkParse::FindScalar(f_width.c_str(), &width);
49    if (strcmp(wSuffix, "pt") == 0)
50        width = SkScalarMulDiv(width, SK_Scalar1 * 72, SK_Scalar1 * 96);
51    SkParse::FindScalars(f_viewBox.c_str(), viewBox, 4);
52    SkRect box;
53    box.fLeft = SkScalarDiv(viewBox[0], width);
54    box.fTop = SkScalarDiv(viewBox[1], height);
55    box.fRight = SkScalarDiv(viewBox[2], width);
56    box.fBottom = SkScalarDiv(viewBox[3], height);
57    if (box.fLeft == 0 && box.fTop == 0 &&
58        box.fRight == SK_Scalar1 && box.fBottom == SK_Scalar1)
59            return;
60    parser._startElement("matrix");
61    if (box.fLeft != 0) {
62        SkString x;
63        x.appendScalar(box.fLeft);
64        parser._addAttributeLen("translateX", x.c_str(), x.size());
65    }
66    if (box.fTop != 0) {
67        SkString y;
68        y.appendScalar(box.fTop);
69        parser._addAttributeLen("translateY", y.c_str(), y.size());
70    }
71    if (box.fRight != SK_Scalar1) {
72        SkString x;
73        x.appendScalar(box.fRight);
74        parser._addAttributeLen("scaleX", x.c_str(), x.size());
75    }
76    if (box.fBottom != SK_Scalar1) {
77        SkString y;
78        y.appendScalar(box.fBottom);
79        parser._addAttributeLen("scaleY", y.c_str(), y.size());
80    }
81    parser._endElement();
82}
83