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-rw-r--r--fpdf.go52
-rw-r--r--fpdf_test.go49
2 files changed, 101 insertions, 0 deletions
diff --git a/fpdf.go b/fpdf.go
index ca48fb5..28f69cf 100644
--- a/fpdf.go
+++ b/fpdf.go
@@ -1103,6 +1103,58 @@ func (f *Fpdf) Rect(x, y, w, h float64, styleStr string) {
f.outf("%.2f %.2f %.2f %.2f re %s", x*f.k, (f.h-y)*f.k, w*f.k, -h*f.k, fillDrawOp(styleStr))
}
+// RoundedRect outputs a rectangle of width w and height h with the upper left
+// corner positioned at point (x, y). It can be drawn (border only), filled
+// (with no border) or both. 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". Drawing uses the current draw color and line width
+// centered on the rectangle's perimeter. Filling uses the current fill color.
+// The rounded corners of the rectangle are specified by radius r. corners is a
+// string that includes "1" to round the upper left corner, "2" to round the
+// upper right corner, "3" to round the lower right corner, and "4" to round
+// the lower left corner. The RoundedRect example demonstrates this method.
+func (f *Fpdf) RoundedRect(x, y, w, h, r float64, corners string, stylestr string) {
+ // This routine was adapted by Brigham Thompson from a script by Christophe Prugnaud
+ k := f.k
+ hp := f.h
+ myArc := r * (4.0 / 3.0) * (math.Sqrt2 - 1.0)
+ f.outf("q %.5f %.5f m", (x+r)*k, (hp-y)*k)
+ xc := x + w - r
+ yc := y + r
+ f.outf("%.5f %.5f l", xc*k, (hp-y)*k)
+ if strings.Contains(corners, "2") == false {
+ f.outf("%.5f %.5f l", (x+w)*k, (hp-y)*k)
+ } else {
+ f.clipArc(xc+myArc, yc-r, xc+r, yc-myArc, xc+r, yc)
+ }
+ xc = x + w - r
+ yc = y + h - r
+ f.outf("%.5f %.5f l", (x+w)*k, (hp-yc)*k)
+ if strings.Contains(corners, "3") == false {
+ f.outf("%.5f %.5f l", (x+w)*k, (hp-(y+h))*k)
+ } else {
+ f.clipArc(xc+r, yc+myArc, xc+myArc, yc+r, xc, yc+r)
+ }
+ xc = x + r
+ yc = y + h - r
+ f.outf("%.5f %.5f l", xc*k, (hp-(y+h))*k)
+ if strings.Contains(corners, "4") == false {
+ f.outf("%.5f %.5f l", x*k, (hp-(y+h))*k)
+ } else {
+ f.clipArc(xc-myArc, yc+r, xc-r, yc+myArc, xc-r, yc)
+ }
+ xc = x + r
+ yc = y + r
+ f.outf("%.5f %.5f l", x*k, (hp-yc)*k)
+ if strings.Contains(corners, "1") == false {
+ f.outf("%.5f %.5f l", x*k, (hp-y)*k)
+ f.outf("%.5f %.5f l", (x+r)*k, (hp-y)*k)
+ } else {
+ f.clipArc(xc-r, yc-myArc, xc-myArc, yc-r, xc, yc-r)
+ }
+ f.out(fillDrawOp(stylestr))
+}
+
// Circle draws a circle centered on point (x, y) with radius r.
//
// styleStr can be "F" for filled, "D" for outlined only, or "DF" or "FD" for
diff --git a/fpdf_test.go b/fpdf_test.go
index 63c28c5..c6020f3 100644
--- a/fpdf_test.go
+++ b/fpdf_test.go
@@ -2639,3 +2639,52 @@ func ExampleUTF8CutFont() {
// Output:
// Successfully generated pdf/Fpdf_UTF8CutFont.pdf
}
+
+func ExampleFpdf_RoundedRect() {
+ const (
+ wd = 40.0
+ hgap = 10.0
+ radius = 10.0
+ ht = 60.0
+ vgap = 10.0
+ )
+ corner := func(b1, b2, b3, b4 bool) (cstr string) {
+ if b1 {
+ cstr = "1"
+ }
+ if b2 {
+ cstr += "2"
+ }
+ if b3 {
+ cstr += "3"
+ }
+ if b4 {
+ cstr += "4"
+ }
+ return
+ }
+ pdf := gofpdf.New("P", "mm", "A4", "") // 210 x 297
+ pdf.AddPage()
+ pdf.SetLineWidth(0.5)
+ y := vgap
+ r := 40
+ g := 30
+ b := 20
+ for row := 0; row < 4; row++ {
+ x := hgap
+ for col := 0; col < 4; col++ {
+ pdf.SetFillColor(r, g, b)
+ pdf.RoundedRect(x, y, wd, ht, radius, corner(row&1 == 1, row&2 == 2, col&1 == 1, col&2 == 2), "FD")
+ r += 8
+ g += 10
+ b += 12
+ x += wd + hgap
+ }
+ y += ht + vgap
+ }
+ fileStr := example.Filename("Fpdf_RoundedRect")
+ err := pdf.OutputFileAndClose(fileStr)
+ example.Summary(err, fileStr)
+ // Output:
+ // Successfully generated pdf/Fpdf_RoundedRect.pdf
+}