60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// Copyright 2010 The draw2d Authors. All rights reserved.
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// created: 21/11/2010 by Laurent Le Goff
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package draw2d
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import (
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"image"
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"image/color"
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)
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// FillRule defines the type for fill rules
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type FillRule int
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const (
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// FillRuleEvenOdd defines the even odd filling rule
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FillRuleEvenOdd FillRule = iota
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// FillRuleWinding defines the non zero winding rule
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FillRuleWinding
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)
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// GraphicContext describes the interface for the various backends (images, pdf, opengl, ...)
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type GraphicContext interface {
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Path
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// Create a new path
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BeginPath()
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GetMatrixTransform() MatrixTransform
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SetMatrixTransform(tr MatrixTransform)
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ComposeMatrixTransform(tr MatrixTransform)
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Rotate(angle float64)
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Translate(tx, ty float64)
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Scale(sx, sy float64)
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SetStrokeColor(c color.Color)
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SetFillColor(c color.Color)
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SetFillRule(f FillRule)
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SetLineWidth(lineWidth float64)
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SetLineCap(cap Cap)
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SetLineJoin(join Join)
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SetLineDash(dash []float64, dashOffset float64)
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SetFontSize(fontSize float64)
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GetFontSize() float64
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SetFontData(fontData FontData)
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GetFontData() FontData
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DrawImage(image image.Image)
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Save()
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Restore()
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Clear()
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ClearRect(x1, y1, x2, y2 int)
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SetDPI(dpi int)
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GetDPI() int
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GetStringBounds(s string) (left, top, right, bottom float64)
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CreateStringPath(text string, x, y float64) (cursor float64)
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FillString(text string) (cursor float64)
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FillStringAt(text string, x, y float64) (cursor float64)
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StrokeString(text string) (cursor float64)
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StrokeStringAt(text string, x, y float64) (cursor float64)
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Stroke(paths ...*PathStorage)
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Fill(paths ...*PathStorage)
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FillStroke(paths ...*PathStorage)
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}
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