From 500caaeda74dd9c660279036293f4b2997cf0b03 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sat, 9 Sep 2017 09:42:37 +0200 Subject: Add vendor --- .../github.com/llgcode/draw2d/draw2dbase/text.go | 68 ++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 vendor/github.com/llgcode/draw2d/draw2dbase/text.go (limited to 'vendor/github.com/llgcode/draw2d/draw2dbase/text.go') diff --git a/vendor/github.com/llgcode/draw2d/draw2dbase/text.go b/vendor/github.com/llgcode/draw2d/draw2dbase/text.go new file mode 100644 index 0000000..4283bad --- /dev/null +++ b/vendor/github.com/llgcode/draw2d/draw2dbase/text.go @@ -0,0 +1,68 @@ +package draw2dbase + +import "github.com/llgcode/draw2d" + +var glyphCache map[string]map[rune]*Glyph + +func init() { + glyphCache = make(map[string]map[rune]*Glyph) +} + +// FetchGlyph fetches a glyph from the cache, calling renderGlyph first if it doesn't already exist +func FetchGlyph(gc draw2d.GraphicContext, fontName string, chr rune) *Glyph { + if glyphCache[fontName] == nil { + glyphCache[fontName] = make(map[rune]*Glyph, 60) + } + if glyphCache[fontName][chr] == nil { + glyphCache[fontName][chr] = renderGlyph(gc, fontName, chr) + } + return glyphCache[fontName][chr].Copy() +} + +// renderGlyph renders a glyph then caches and returns it +func renderGlyph(gc draw2d.GraphicContext, fontName string, chr rune) *Glyph { + gc.Save() + defer gc.Restore() + gc.BeginPath() + width := gc.CreateStringPath(string(chr), 0, 0) + path := gc.GetPath() + return &Glyph{ + path: &path, + Width: width, + } +} + +// Glyph represents a rune which has been converted to a Path and width +type Glyph struct { + // path represents a glyph, it is always at (0, 0) + path *draw2d.Path + // Width of the glyph + Width float64 +} + +func (g *Glyph) Copy() *Glyph { + return &Glyph{ + path: g.path.Copy(), + Width: g.Width, + } +} + +// Fill copies a glyph from the cache, and fills it +func (g *Glyph) Fill(gc draw2d.GraphicContext, x, y float64) float64 { + gc.Save() + gc.BeginPath() + gc.Translate(x, y) + gc.Fill(g.path) + gc.Restore() + return g.Width +} + +// Stroke fetches a glyph from the cache, and strokes it +func (g *Glyph) Stroke(gc draw2d.GraphicContext, x, y float64) float64 { + gc.Save() + gc.BeginPath() + gc.Translate(x, y) + gc.Stroke(g.path) + gc.Restore() + return g.Width +} -- cgit v1.2.3