painter.dart
3.15 KB
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
/*
* Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import '../../pdf.dart';
import '../widgets/font.dart';
import '../widgets/svg.dart';
import 'brush.dart';
import 'color.dart';
import 'group.dart';
import 'parser.dart';
class SvgPainter {
SvgPainter(
this.parser,
this._canvas,
this.document,
this.boundingBox, {
this.customFontLookup,
});
final SvgParser parser;
final PdfGraphics? _canvas;
final PdfDocument document;
final PdfRect boundingBox;
final SvgCustomFontLookup? customFontLookup;
void paint() {
final brush = parser.colorFilter == null
? SvgBrush.defaultContext
: SvgBrush.defaultContext
.copyWith(fill: SvgColor(color: parser.colorFilter));
SvgGroup.fromXml(parser.root, this, brush).paint(_canvas!);
}
final _fontCache = <String, Font>{};
Font? getFontCache(String fontFamily, String fontStyle, String fontWeight) {
final cache = '$fontFamily-$fontStyle-$fontWeight';
if (!_fontCache.containsKey(cache)) {
_fontCache[cache] = getFont(fontFamily, fontStyle, fontWeight);
}
return _fontCache[cache];
}
Font getFont(String fontFamily, String fontStyle, String fontWeight) {
final customFont =
customFontLookup?.call(fontFamily, fontStyle, fontWeight);
if (customFont != null) {
return customFont;
}
switch (fontFamily) {
case 'serif':
switch (fontStyle) {
case 'normal':
switch (fontWeight) {
case 'normal':
case 'lighter':
return Font.times();
}
return Font.timesBold();
}
switch (fontWeight) {
case 'normal':
case 'lighter':
return Font.timesItalic();
}
return Font.timesBoldItalic();
case 'monospace':
switch (fontStyle) {
case 'normal':
switch (fontWeight) {
case 'normal':
case 'lighter':
return Font.courier();
}
return Font.courierBold();
}
switch (fontWeight) {
case 'normal':
case 'lighter':
return Font.courierOblique();
}
return Font.courierBoldOblique();
}
switch (fontStyle) {
case 'normal':
switch (fontWeight) {
case 'normal':
case 'lighter':
return Font.helvetica();
}
return Font.helveticaBold();
}
switch (fontWeight) {
case 'normal':
case 'lighter':
return Font.helveticaOblique();
}
return Font.helveticaBoldOblique();
}
}