flutter_package / dart_pdf

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szotp
Committed by David PHAM-VAN
4dc83518 1 parent 939868d8

Use path_parsing for drawShape

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Showing 4 changed files with 35 additions and 166 deletions
... ... @@ -3,6 +3,7 @@
## 1.8.1
- Fix Wrap break condition
- Fix drawShape method [Paweł Szot]
## 1.8.0
... ...
... ... @@ -24,6 +24,7 @@ import 'dart:typed_data';
import 'package:crypto/crypto.dart';
import 'package:image/image.dart' as im;
import 'package:meta/meta.dart';
import 'package:path_parsing/path_parsing.dart';
import 'package:utf/utf.dart';
import 'package:vector_math/vector_math_64.dart';
... ...
... ... @@ -514,173 +514,9 @@ class PdfGraphics {
}
}
/// https://github.com/deeplook/svglib/blob/master/svglib/svglib.py#L911
void drawShape(String d, {bool stroke = true}) {
final RegExp exp =
RegExp(r'([MmZzLlHhVvCcSsQqTtAaE])|(-[\.0-9]+)|([\.0-9]+)');
final Iterable<Match> matches = exp.allMatches(d + ' E');
String action;
String lastAction;
List<double> points;
PdfPoint lastControl = const PdfPoint(0, 0);
PdfPoint lastPoint = const PdfPoint(0, 0);
for (Match m in matches) {
final String a = m.group(1);
final String b = m.group(0);
if (a == null) {
points.add(double.parse(b));
continue;
}
if (action != null) {
switch (action) {
case 'm': // moveto relative
lastPoint =
PdfPoint(lastPoint.x + points[0], lastPoint.y + points[1]);
moveTo(lastPoint.x, lastPoint.y);
break;
case 'M': // moveto absolute
lastPoint = PdfPoint(points[0], points[1]);
moveTo(lastPoint.x, lastPoint.y);
break;
case 'l': // lineto relative
lastPoint =
PdfPoint(lastPoint.x + points[0], lastPoint.y + points[1]);
lineTo(lastPoint.x, lastPoint.y);
break;
case 'L': // lineto absolute
lastPoint = PdfPoint(points[0], points[1]);
lineTo(lastPoint.x, lastPoint.y);
break;
case 'H': // horizontal line absolute
lastPoint = PdfPoint(points[0], lastPoint.y);
lineTo(lastPoint.x, lastPoint.y);
break;
case 'V': // vertical line absolute
lastPoint = PdfPoint(lastPoint.x, points[0]);
lineTo(lastPoint.x, lastPoint.y);
break;
case 'h': // horizontal line relative
lastPoint = PdfPoint(lastPoint.x + points[0], lastPoint.y);
lineTo(lastPoint.x, lastPoint.y);
break;
case 'v': // vertical line relative
lastPoint = PdfPoint(lastPoint.x, lastPoint.y + points[0]);
lineTo(lastPoint.x, lastPoint.y);
break;
case 'C': // cubic bezier, absolute
int len = 0;
while (len < points.length) {
curveTo(points[len + 0], points[len + 1], points[len + 2],
points[len + 3], points[len + 4], points[len + 5]);
len += 6;
}
lastPoint =
PdfPoint(points[points.length - 2], points[points.length - 1]);
lastControl =
PdfPoint(points[points.length - 4], points[points.length - 3]);
break;
case 'S': // smooth cubic bézier, absolute
while (points.length >= 4) {
PdfPoint c1;
if ('cCsS'.contains(lastAction)) {
c1 = PdfPoint(lastPoint.x + (lastPoint.x - lastControl.x),
lastPoint.y + (lastPoint.y - lastControl.y));
} else {
c1 = lastPoint;
}
lastControl = PdfPoint(points[0], points[1]);
lastPoint = PdfPoint(points[2], points[3]);
curveTo(c1.x, c1.y, lastControl.x, lastControl.y, lastPoint.x,
lastPoint.y);
points = points.sublist(4);
lastAction = 'C';
}
break;
case 'c': // cubic bezier, relative
int len = 0;
while (len < points.length) {
points[len + 0] += lastPoint.x;
points[len + 1] += lastPoint.y;
points[len + 2] += lastPoint.x;
points[len + 3] += lastPoint.y;
points[len + 4] += lastPoint.x;
points[len + 5] += lastPoint.y;
curveTo(points[len + 0], points[len + 1], points[len + 2],
points[len + 3], points[len + 4], points[len + 5]);
lastPoint = PdfPoint(points[len + 4], points[len + 5]);
lastControl = PdfPoint(points[len + 2], points[len + 3]);
len += 6;
}
break;
case 's': // smooth cubic bézier, relative
while (points.length >= 4) {
PdfPoint c1;
if ('cCsS'.contains(lastAction)) {
c1 = PdfPoint(lastPoint.x + (lastPoint.x - lastControl.x),
lastPoint.y + (lastPoint.y - lastControl.y));
} else {
c1 = lastPoint;
}
lastControl =
PdfPoint(points[0] + lastPoint.x, points[1] + lastPoint.y);
lastPoint =
PdfPoint(points[2] + lastPoint.x, points[3] + lastPoint.y);
curveTo(c1.x, c1.y, lastControl.x, lastControl.y, lastPoint.x,
lastPoint.y);
points = points.sublist(4);
lastAction = 'c';
}
break;
// case 'Q': // quadratic bezier, absolute
// break;
// case 'T': // quadratic bezier, absolute
// break;
// case 'q': // quadratic bezier, relative
// break;
// case 't': // quadratic bezier, relative
// break;
case 'A': // elliptical arc, absolute
int len = 0;
while (len < points.length) {
bezierArc(lastPoint.x, lastPoint.y, points[len + 0],
points[len + 1], points[len + 5], points[len + 6],
phi: points[len + 2] * math.pi / 180.0,
large: points[len + 3] != 0.0,
sweep: points[len + 4] != 0.0);
lastPoint = PdfPoint(points[len + 5], points[len + 6]);
len += 7;
}
break;
case 'a': // elliptical arc, relative
int len = 0;
while (len < points.length) {
points[len + 5] += lastPoint.x;
points[len + 6] += lastPoint.y;
bezierArc(lastPoint.x, lastPoint.y, points[len + 0],
points[len + 1], points[len + 5], points[len + 6],
phi: points[len + 2] * math.pi / 180.0,
large: points[len + 3] != 0.0,
sweep: points[len + 4] != 0.0);
lastPoint = PdfPoint(points[len + 5], points[len + 6]);
len += 7;
}
break;
case 'Z': // close path
case 'z': // close path
if (stroke) {
closePath();
}
break;
default:
print('Unknown path action: $action');
}
}
lastAction = action;
action = a;
points = <double>[];
}
final proxy = _PathProxy(this, stroke);
writeSvgPathDataToPath(d, proxy);
}
void setLineCap(PdfLineCap cap) {
... ... @@ -706,3 +542,33 @@ class PdfGraphics {
buf.putString(' $phase d\n');
}
}
class _PathProxy extends PathProxy {
_PathProxy(this.canvas, this.stroke);
final PdfGraphics canvas;
final bool stroke;
@override
void close() {
if (stroke) {
canvas.closePath();
}
}
@override
void cubicTo(
double x1, double y1, double x2, double y2, double x3, double y3) {
canvas.curveTo(x1, y1, x2, y2, x3, y3);
}
@override
void lineTo(double x, double y) {
canvas.lineTo(x, y);
}
@override
void moveTo(double x, double y) {
canvas.moveTo(x, y);
}
}
... ...
... ... @@ -17,6 +17,7 @@ dependencies:
archive: ^2.0.10
barcode: ^1.9.0
image: ^2.1.4
path_parsing: ^0.1.4
dev_dependencies:
test:
... ...