added a NewPdf constructor for convenience

pdf2d/graphiccontext.go

@@ -6,7 +6,6 @@ package pdf2d
 
 import (
 	"bytes"
-	"fmt"
 	"image"
 	"image/color"
 	"image/png"
@@ -27,10 +26,6 @@ var (
 		draw2d.SquareCap: "square"}
 )
 
-func notImplemented(method string) {
-	fmt.Printf("%s: not implemented\n", method)
-}
-
 const c255 = 255.0 / 65535.0
 
 var (
@@ -38,11 +33,21 @@ var (
 	white      color.Color = color.RGBA{255, 255, 255, 255}
 )
 
+// NewPdf creates a new pdf document with the draw2d fontfolder and
+// already a page added.
+func NewPdf(orientationStr, unitStr, sizeStr string) *gofpdf.Fpdf {
+	pdf := gofpdf.New(orientationStr, unitStr, sizeStr, draw2d.GetFontFolder())
+	pdf.AddPage()
+	return pdf
+}
+
+// rgb converts a color (used by draw2d) into 3 int (used by gofpdf)
 func rgb(c color.Color) (int, int, int) {
 	r, g, b, _ := c.RGBA()
 	return int(float64(r) * c255), int(float64(g) * c255), int(float64(b) * c255)
 }
 
+// clearRect draws a white rectangle
 func clearRect(gc *GraphicContext, x1, y1, x2, y2 float64) {
 	// save state
 	f := gc.Current.FillColor

pdf2d/samples/android/android.go

@@ -5,20 +5,17 @@
 package main
 
 import (
-	"fmt"
 	"image/color"
 	"math"
 
 	"github.com/stanim/draw2d"
 	"github.com/stanim/draw2d/pdf2d"
-	"github.com/stanim/gofpdf"
 )
 
 func main() {
 	// Initialize the graphic context on a pdf document
-	pdf := gofpdf.New("P", "mm", "A4", "../font")
-	pdf.AddPage()
-	gc := pdf2d.NewGraphicContext(pdf)
+	dest := pdf2d.NewPdf("P", "mm", "A4")
+	gc := pdf2d.NewGraphicContext(dest)
 
 	// set the fill and stroke color of the droid
 	gc.SetFillColor(color.RGBA{0x44, 0xff, 0x44, 0xff})
@@ -28,14 +25,14 @@ func main() {
 	DrawDroid(gc, 10, 10)
 
 	// Save to pdf
-	pdf2d.SaveToPdfFile("android.pdf", pdf)
+	pdf2d.SaveToPdfFile("android.pdf", dest)
 }
 
 func DrawDroid(gc draw2d.GraphicContext, x, y float64) {
 	gc.SetLineCap(draw2d.RoundCap)
 	gc.SetLineWidth(5)
 
-	fmt.Println("\nhead")
+	// head
 	gc.MoveTo(x+30, y+70)
 	gc.ArcTo(x+80, y+70, 50, 50, 180*(math.Pi/180), 180*(math.Pi/180))
 	gc.Close()
@@ -46,34 +43,33 @@ func DrawDroid(gc draw2d.GraphicContext, x, y float64) {
 	gc.LineTo(x+110, y+10)
 	gc.Stroke()
 
-	fmt.Println("\nleft eye")
+	// left eye
 	draw2d.Circle(gc, x+60, y+45, 5)
 	gc.FillStroke()
 
-	fmt.Println("\nright eye")
+	// right eye
 	draw2d.Circle(gc, x+100, y+45, 5)
 	gc.FillStroke()
 
-	fmt.Println("\nbody")
+	// body
 	draw2d.RoundRect(gc, x+30, y+75, x+30+100, y+75+90, 10, 10)
 	gc.FillStroke()
 	draw2d.Rect(gc, x+30, y+75, x+30+100, y+75+80)
 	gc.FillStroke()
 
-	fmt.Println("\nleft arm")
+	// left arm
 	draw2d.RoundRect(gc, x+5, y+80, x+5+20, y+80+70, 10, 10)
 	gc.FillStroke()
 
-	fmt.Println("\nright arm")
+	// right arm
 	draw2d.RoundRect(gc, x+135, y+80, x+135+20, y+80+70, 10, 10)
 	gc.FillStroke()
 
-	fmt.Println("\nleft leg")
+	// left leg
 	draw2d.RoundRect(gc, x+50, y+150, x+50+20, y+150+50, 10, 10)
 	gc.FillStroke()
 
-	fmt.Println("\nright leg")
+	// right leg
 	draw2d.RoundRect(gc, x+90, y+150, x+90+20, y+150+50, 10, 10)
 	gc.FillStroke()
-
 }

pdf2d/samples/frame-image/frame-image.go

@@ -10,7 +10,6 @@ import (
 
 	"github.com/stanim/draw2d"
 	"github.com/stanim/draw2d/pdf2d"
-	"github.com/stanim/gofpdf"
 )
 
 func main() {
@@ -19,9 +18,8 @@ func main() {
 	// Line width od the frame
 	const lineWidth = 3
 
-	// Initialize the graphic context on an RGBA image
-	dest := gofpdf.New("P", "mm", "A4", "../font")
-	dest.AddPage()
+	// Initialize the graphic context on a pdf document
+	dest := pdf2d.NewPdf("P", "mm", "A3")
 	gc := pdf2d.NewGraphicContext(dest)
 	// Size of destination image
 	dw, dh := dest.GetPageSize()

pdf2d/samples/gopher/gopher.go

@@ -9,13 +9,11 @@ import (
 
 	"github.com/stanim/draw2d"
 	"github.com/stanim/draw2d/pdf2d"
-	"github.com/stanim/gofpdf"
 )
 
 func main() {
 	// Initialize the graphic context on an RGBA image
-	dest := gofpdf.New("P", "mm", "A3", "../font")
-	dest.AddPage()
+	dest := pdf2d.NewPdf("P", "mm", "A4")
 	gc := pdf2d.NewGraphicContext(dest)
 
 	// Draw a gopher