From f7dc650faac269ace419111c0aad1150d07b678f Mon Sep 17 00:00:00 2001
From: Laurent Le Goff <legoff.laurent@gmail.com>
Date: Mon, 28 May 2012 09:52:49 +0200
Subject: [PATCH] add Painter Arg

---
 draw2d/doc.go                |  4 ++--
 draw2d/image.go              | 22 ++++++++++++++++++++--
 draw2d/path.go               |  2 +-
 draw2d/rgba_interpolation.go |  2 +-
 4 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/draw2d/doc.go b/draw2d/doc.go
index 9184d66..3dbff82 100644
--- a/draw2d/doc.go
+++ b/draw2d/doc.go
@@ -1,5 +1,5 @@
 // Copyright 2010 The draw2d Authors. All rights reserved.
 // created: 13/12/2010 by Laurent Le Goff
-
+
 // The package draw2d provide a Graphic Context that can draw vectorial figure on surface.
-package draw2d
\ No newline at end of file
+package draw2d
diff --git a/draw2d/image.go b/draw2d/image.go
index 1ff136d..eca4830 100644
--- a/draw2d/image.go
+++ b/draw2d/image.go
@@ -39,8 +39,6 @@ func NewGraphicContext(img draw.Image) *ImageGraphicContext {
 	switch selectImage := img.(type) {
 	case *image.RGBA:
 		painter = raster.NewRGBAPainter(selectImage)
-	//case *image.NRGBA:
-	//	painter = NewNRGBAPainter(selectImage)
 	default:
 		panic("Image type not supported")
 	}
@@ -62,6 +60,26 @@ func NewGraphicContext(img draw.Image) *ImageGraphicContext {
 	return gc
 }
 
+// Create a new Graphic context from an image and a Painter (see Freetype-go)
+func NewGraphicContextWithPainter(img draw.Image, painter Painter) *ImageGraphicContext {
+	width, height := img.Bounds().Dx(), img.Bounds().Dy()
+	dpi := 92
+	ftContext := freetype.NewContext()
+	ftContext.SetDPI(dpi)
+	ftContext.SetClip(img.Bounds())
+	ftContext.SetDst(img)
+	gc := &ImageGraphicContext{
+		NewStackGraphicContext(),
+		img,
+		painter,
+		raster.NewRasterizer(width, height),
+		raster.NewRasterizer(width, height),
+		ftContext,
+		dpi,
+	}
+	return gc
+}
+
 func (gc *ImageGraphicContext) SetDPI(dpi int) {
 	gc.DPI = dpi
 	gc.freetype.SetDPI(dpi)
diff --git a/draw2d/path.go b/draw2d/path.go
index ab51810..b82910e 100644
--- a/draw2d/path.go
+++ b/draw2d/path.go
@@ -16,7 +16,7 @@ type Path interface {
 	// Add a line to the current subpath 
 	// relative to the current point
 	RLineTo(dx, dy float64)
-	
+
 	QuadCurveTo(cx, cy, x, y float64)
 	RQuadCurveTo(dcx, dcy, dx, dy float64)
 	CubicCurveTo(cx1, cy1, cx2, cy2, x, y float64)
diff --git a/draw2d/rgba_interpolation.go b/draw2d/rgba_interpolation.go
index 39fd3d1..92534e7 100644
--- a/draw2d/rgba_interpolation.go
+++ b/draw2d/rgba_interpolation.go
@@ -116,7 +116,7 @@ func DrawImage(src image.Image, dest draw.Image, tr MatrixTransform, op draw.Op,
 			u = x
 			v = y
 			tr.InverseTransform(&u, &v)
-			if bounds.Min.X <= int(u) && bounds.Max.X > int(u) &&  bounds.Min.Y <= int(v) && bounds.Max.Y > int(v) {
+			if bounds.Min.X <= int(u) && bounds.Max.X > int(u) && bounds.Min.Y <= int(v) && bounds.Max.Y > int(v) {
 				c1 = dest.At(int(x), int(y))
 				switch filter {
 				case LinearFilter: