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Change svg creation to be able to get filled
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elivlo committed Mar 29, 2021
1 parent 4edba00 commit 8dbe4ca
Showing 1 changed file with 76 additions and 68 deletions.
144 changes: 76 additions & 68 deletions svgwrite.go
Original file line number Diff line number Diff line change
Expand Up @@ -14,72 +14,80 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

package gofpdf
package gofpdf

// SVGBasicWrite renders the paths encoded in the basic SVG image specified by
// sb. The scale value is used to convert the coordinates in the path to the
// unit of measure specified in New(). The current position (as set with a call
// to SetXY()) is used as the origin of the image. The current line cap style
// (as set with SetLineCapStyle()), line width (as set with SetLineWidth()),
// and draw color (as set with SetDrawColor()) are used in drawing the image
// paths.
func (f *Fpdf) SVGBasicWrite(sb *SVGBasicType, scale float64) {
originX, originY := f.GetXY()
var x, y, newX, newY float64
var cx0, cy0, cx1, cy1 float64
var path []SVGBasicSegmentType
var seg SVGBasicSegmentType
var startX, startY float64
sval := func(origin float64, arg int) float64 {
return origin + scale*seg.Arg[arg]
}
xval := func(arg int) float64 {
return sval(originX, arg)
}
yval := func(arg int) float64 {
return sval(originY, arg)
}
val := func(arg int) (float64, float64) {
return xval(arg), yval(arg + 1)
}
for j := 0; j < len(sb.Segments) && f.Ok(); j++ {
path = sb.Segments[j]
for k := 0; k < len(path) && f.Ok(); k++ {
seg = path[k]
switch seg.Cmd {
case 'M':
x, y = val(0)
startX, startY = x, y
f.SetXY(x, y)
case 'L':
newX, newY = val(0)
f.Line(x, y, newX, newY)
x, y = newX, newY
case 'C':
cx0, cy0 = val(0)
cx1, cy1 = val(2)
newX, newY = val(4)
f.CurveCubic(x, y, cx0, cy0, newX, newY, cx1, cy1, "D")
x, y = newX, newY
case 'Q':
cx0, cy0 = val(0)
newX, newY = val(2)
f.Curve(x, y, cx0, cy0, newX, newY, "D")
x, y = newX, newY
case 'H':
newX = xval(0)
f.Line(x, y, newX, y)
x = newX
case 'V':
newY = yval(0)
f.Line(x, y, x, newY)
y = newY
case 'Z':
f.Line(x, y, startX, startY)
x, y = startX, startY
default:
f.SetErrorf("Unexpected path command '%c'", seg.Cmd)
}
}
}
}
// SVGBasicWrite renders the paths encoded in the basic SVG image specified by
// sb. The scale value is used to convert the coordinates in the path to the
// unit of measure specified in New(). The current position (as set with a call
// to SetXY()) is used as the origin of the image. The current line cap style
// (as set with SetLineCapStyle()), line width (as set with SetLineWidth()),
// and draw color (as set with SetDrawColor()) are used in drawing the image
// paths.
// styleStr can be "F" for filled, "D" for outlined only, or "DF" or "FD" for
// outlined and filled. An empty string will be replaced with "D".
// Path-painting operators as defined in the PDF specification are also
// allowed: "S" (Stroke the path), "s" (Close and stroke the path),
// "f" (fill the path, using the nonzero winding number), "f*"
// (Fill the path, using the even-odd rule), "B" (Fill and then stroke
// the path, using the nonzero winding number rule), "B*" (Fill and
// then stroke the path, using the even-odd rule), "b" (Close, fill,
// and then stroke the path, using the nonzero winding number rule) and
// "b*" (Close, fill, and then stroke the path, using the even-odd
// rule).
func (f *Fpdf) SVGBasicWrite(sb *SVGBasicType, scale float64, styleStr string) {
originX, originY := f.GetXY()
var x, y, newX, newY float64
var cx0, cy0, cx1, cy1 float64
var path []SVGBasicSegmentType
var seg SVGBasicSegmentType
var startX, startY float64
sval := func(origin float64, arg int) float64 {
return origin + scale*seg.Arg[arg]
}
xval := func(arg int) float64 {
return sval(originX, arg)
}
yval := func(arg int) float64 {
return sval(originY, arg)
}
val := func(arg int) (float64, float64) {
return xval(arg), yval(arg + 1)
}
for j := 0; j < len(sb.Segments) && f.Ok(); j++ {
path = sb.Segments[j]
for k := 0; k < len(path) && f.Ok(); k++ {
seg = path[k]
switch seg.Cmd {
case 'M':
x, y = val(0)
startX, startY = x, y
f.MoveTo(x, y)
case 'L':
newX, newY = val(0)
f.LineTo(newX, newY)
case 'C':
cx0, cy0 = val(0)
cx1, cy1 = val(2)
newX, newY = val(4)
f.CurveBezierCubicTo(cx0, cy0, cx1, cy1, newX, newY)
x, y = newX, newY
case 'Q':
cx0, cy0 = val(0)
newX, newY = val(2)
f.CurveTo(cx0, cy0, newX, newY)
x, y = newX, newY
case 'H':
newX = xval(0)
f.LineTo(newX, f.GetY())
case 'V':
newY = yval(0)
f.LineTo(f.GetX(), newY)
case 'Z':
f.LineTo(startX, startY)
default:
f.SetErrorf("Unexpected path command '%c'", seg.Cmd)
}
}
}
f.DrawPath(styleStr)
}

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