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fix GraphicContext.DrawImage and use PNG as default format

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This commit is contained in:
Stani 2015-06-27 17:46:03 +02:00
parent 66b0d91546
commit 7ffd99f6bd
1 changed files with 11 additions and 8 deletions
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19
pdf2d/graphiccontext.go
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@ -9,7 +9,7 @@ import (
"fmt"
"image"
"image/color"
"image/jpeg"
"image/png"
"log"
"os"
"strconv"
@ -70,17 +70,20 @@ func NewGraphicContext(pdf *gofpdf.Fpdf) *GraphicContext {
return &GraphicContext{draw2d.NewStackGraphicContext(), pdf, dpi}
}
// DrawImage draws an image as JPG at 96dpi
// DrawImage draws an image as PNG
// TODO: add type (tp) as parameter to argument list?
func (gc *GraphicContext) DrawImage(image image.Image) {
name := strconv.Itoa(int(imageCount))
tp := "JPG" // "JPG", "JPEG", "PNG" and "GIF"
tp := "PNG" // "JPG", "JPEG", "PNG" and "GIF"
b := &bytes.Buffer{}
jpeg.Encode(b, image, nil)
png.Encode(b, image)
gc.pdf.RegisterImageReader(name, tp, b)
gc.pdf.Image(name, 0, 0, 0, 0, false, tp, 0, "")
// bounds := image.Bounds()
// x, y, w, h := float64(bounds.Min.X), float64(bounds.Min.Y), float64(bounds.Dx()), float64(bounds.Dy())
//gc.pdf.Image(name, x, y, w, h, false, tp, 0, "")
bounds := image.Bounds()
//x0, y0, x1, y1 := float64(bounds.Min.X), float64(bounds.Min.Y), float64(bounds.Dx()), float64(bounds.Dy())
x0, y0, x1, y1 := float64(bounds.Min.X), float64(bounds.Min.Y), float64(bounds.Max.X), float64(bounds.Max.Y)
tr := gc.Current.Tr
tr.TransformRectangle(&x0, &y0, &x1, &y1)
gc.pdf.Image(name, x0, y0, x1-x0, y1-y0, false, tp, 0, "")
}
// Clear draws a white rectangle over the whole page