1 files changed, 208 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/draw2d/draw2d/stack_gc.go b/Godeps/_workspace/src/code.google.com/p/draw2d/draw2d/stack_gc.go
new file mode 100644
index 000000000..b2cf63fc4
--- /dev/null
+++ b/Godeps/_workspace/src/code.google.com/p/draw2d/draw2d/stack_gc.go
@@ -0,0 +1,208 @@
+// Copyright 2010 The draw2d Authors. All rights reserved.
+// created: 21/11/2010 by Laurent Le Goff
+
+package draw2d
+
+import (
+	"code.google.com/p/freetype-go/freetype/truetype"
+	"image"
+	"image/color"
+)
+
+type StackGraphicContext struct {
+	Current *ContextStack
+}
+
+type ContextStack struct {
+	Tr          MatrixTransform
+	Path        *PathStorage
+	LineWidth   float64
+	Dash        []float64
+	DashOffset  float64
+	StrokeColor color.Color
+	FillColor   color.Color
+	FillRule    FillRule
+	Cap         Cap
+	Join        Join
+	FontSize    float64
+	FontData    FontData
+
+	font *truetype.Font
+	// fontSize and dpi are used to calculate scale. scale is the number of
+	// 26.6 fixed point units in 1 em.
+	scale int32
+
+	previous *ContextStack
+}
+
+/**
+ * Create a new Graphic context from an image
+ */
+func NewStackGraphicContext() *StackGraphicContext {
+	gc := &StackGraphicContext{}
+	gc.Current = new(ContextStack)
+	gc.Current.Tr = NewIdentityMatrix()
+	gc.Current.Path = NewPathStorage()
+	gc.Current.LineWidth = 1.0
+	gc.Current.StrokeColor = image.Black
+	gc.Current.FillColor = image.White
+	gc.Current.Cap = RoundCap
+	gc.Current.FillRule = FillRuleEvenOdd
+	gc.Current.Join = RoundJoin
+	gc.Current.FontSize = 10
+	gc.Current.FontData = defaultFontData
+	return gc
+}
+
+func (gc *StackGraphicContext) GetMatrixTransform() MatrixTransform {
+	return gc.Current.Tr
+}
+
+func (gc *StackGraphicContext) SetMatrixTransform(Tr MatrixTransform) {
+	gc.Current.Tr = Tr
+}
+
+func (gc *StackGraphicContext) ComposeMatrixTransform(Tr MatrixTransform) {
+	gc.Current.Tr = Tr.Multiply(gc.Current.Tr)
+}
+
+func (gc *StackGraphicContext) Rotate(angle float64) {
+	gc.Current.Tr = NewRotationMatrix(angle).Multiply(gc.Current.Tr)
+}
+
+func (gc *StackGraphicContext) Translate(tx, ty float64) {
+	gc.Current.Tr = NewTranslationMatrix(tx, ty).Multiply(gc.Current.Tr)
+}
+
+func (gc *StackGraphicContext) Scale(sx, sy float64) {
+	gc.Current.Tr = NewScaleMatrix(sx, sy).Multiply(gc.Current.Tr)
+}
+
+func (gc *StackGraphicContext) SetStrokeColor(c color.Color) {
+	gc.Current.StrokeColor = c
+}
+
+func (gc *StackGraphicContext) SetFillColor(c color.Color) {
+	gc.Current.FillColor = c
+}
+
+func (gc *StackGraphicContext) SetFillRule(f FillRule) {
+	gc.Current.FillRule = f
+}
+
+func (gc *StackGraphicContext) SetLineWidth(LineWidth float64) {
+	gc.Current.LineWidth = LineWidth
+}
+
+func (gc *StackGraphicContext) SetLineCap(Cap Cap) {
+	gc.Current.Cap = Cap
+}
+
+func (gc *StackGraphicContext) SetLineJoin(Join Join) {
+	gc.Current.Join = Join
+}
+
+func (gc *StackGraphicContext) SetLineDash(Dash []float64, DashOffset float64) {
+	gc.Current.Dash = Dash
+	gc.Current.DashOffset = DashOffset
+}
+
+func (gc *StackGraphicContext) SetFontSize(FontSize float64) {
+	gc.Current.FontSize = FontSize
+}
+
+func (gc *StackGraphicContext) GetFontSize() float64 {
+	return gc.Current.FontSize
+}
+
+func (gc *StackGraphicContext) SetFontData(FontData FontData) {
+	gc.Current.FontData = FontData
+}
+
+func (gc *StackGraphicContext) GetFontData() FontData {
+	return gc.Current.FontData
+}
+
+func (gc *StackGraphicContext) BeginPath() {
+	gc.Current.Path.Clear()
+}
+
+func (gc *StackGraphicContext) IsEmpty() bool {
+	return gc.Current.Path.IsEmpty()
+}
+
+func (gc *StackGraphicContext) LastPoint() (float64, float64) {
+	return gc.Current.Path.LastPoint()
+}
+
+func (gc *StackGraphicContext) MoveTo(x, y float64) {
+	gc.Current.Path.MoveTo(x, y)
+}
+
+func (gc *StackGraphicContext) RMoveTo(dx, dy float64) {
+	gc.Current.Path.RMoveTo(dx, dy)
+}
+
+func (gc *StackGraphicContext) LineTo(x, y float64) {
+	gc.Current.Path.LineTo(x, y)
+}
+
+func (gc *StackGraphicContext) RLineTo(dx, dy float64) {
+	gc.Current.Path.RLineTo(dx, dy)
+}
+
+func (gc *StackGraphicContext) QuadCurveTo(cx, cy, x, y float64) {
+	gc.Current.Path.QuadCurveTo(cx, cy, x, y)
+}
+
+func (gc *StackGraphicContext) RQuadCurveTo(dcx, dcy, dx, dy float64) {
+	gc.Current.Path.RQuadCurveTo(dcx, dcy, dx, dy)
+}
+
+func (gc *StackGraphicContext) CubicCurveTo(cx1, cy1, cx2, cy2, x, y float64) {
+	gc.Current.Path.CubicCurveTo(cx1, cy1, cx2, cy2, x, y)
+}
+
+func (gc *StackGraphicContext) RCubicCurveTo(dcx1, dcy1, dcx2, dcy2, dx, dy float64) {
+	gc.Current.Path.RCubicCurveTo(dcx1, dcy1, dcx2, dcy2, dx, dy)
+}
+
+func (gc *StackGraphicContext) ArcTo(cx, cy, rx, ry, startAngle, angle float64) {
+	gc.Current.Path.ArcTo(cx, cy, rx, ry, startAngle, angle)
+}
+
+func (gc *StackGraphicContext) RArcTo(dcx, dcy, rx, ry, startAngle, angle float64) {
+	gc.Current.Path.RArcTo(dcx, dcy, rx, ry, startAngle, angle)
+}
+
+func (gc *StackGraphicContext) Close() {
+	gc.Current.Path.Close()
+}
+
+func (gc *StackGraphicContext) Save() {
+	context := new(ContextStack)
+	context.FontSize = gc.Current.FontSize
+	context.FontData = gc.Current.FontData
+	context.LineWidth = gc.Current.LineWidth
+	context.StrokeColor = gc.Current.StrokeColor
+	context.FillColor = gc.Current.FillColor
+	context.FillRule = gc.Current.FillRule
+	context.Dash = gc.Current.Dash
+	context.DashOffset = gc.Current.DashOffset
+	context.Cap = gc.Current.Cap
+	context.Join = gc.Current.Join
+	context.Path = gc.Current.Path.Copy()
+	context.font = gc.Current.font
+	context.scale = gc.Current.scale
+	copy(context.Tr[:], gc.Current.Tr[:])
+	context.previous = gc.Current
+	gc.Current = context
+}
+
+func (gc *StackGraphicContext) Restore() {
+	if gc.Current.previous != nil {
+		oldContext := gc.Current
+		gc.Current = gc.Current.previous
+		oldContext.previous = nil
+	}
+}