Moving to glide

vendor/golang.org/x/image/example/font/main.go

@@ -0,0 +1,106 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build example
+//
+// This build tag means that "go install golang.org/x/image/..." doesn't
+// install this example program. Use "go run main.go" to run it or "go install
+// -tags=example" to install it.
+
+// Font is a basic example of using fonts.
+package main
+
+import (
+	"flag"
+	"image"
+	"image/color"
+	"image/draw"
+	"image/png"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/plan9font"
+	"golang.org/x/image/math/fixed"
+)
+
+var (
+	fontFlag = flag.String("font", "",
+		`filename of the Plan 9 font or subfont file, such as "lucsans/unicode.8.font" or "lucsans/lsr.14"`)
+	firstRuneFlag = flag.Int("firstrune", 0, "the Unicode code point of the first rune in the subfont file")
+)
+
+func pt(p fixed.Point26_6) image.Point {
+	return image.Point{
+		X: int(p.X+32) >> 6,
+		Y: int(p.Y+32) >> 6,
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	// TODO: mmap the files.
+	if *fontFlag == "" {
+		flag.Usage()
+		log.Fatal("no font specified")
+	}
+	var face font.Face
+	if strings.HasSuffix(*fontFlag, ".font") {
+		fontData, err := ioutil.ReadFile(*fontFlag)
+		if err != nil {
+			log.Fatal(err)
+		}
+		dir := filepath.Dir(*fontFlag)
+		face, err = plan9font.ParseFont(fontData, func(name string) ([]byte, error) {
+			return ioutil.ReadFile(filepath.Join(dir, filepath.FromSlash(name)))
+		})
+		if err != nil {
+			log.Fatal(err)
+		}
+	} else {
+		fontData, err := ioutil.ReadFile(*fontFlag)
+		if err != nil {
+			log.Fatal(err)
+		}
+		face, err = plan9font.ParseSubfont(fontData, rune(*firstRuneFlag))
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	dst := image.NewRGBA(image.Rect(0, 0, 800, 300))
+	draw.Draw(dst, dst.Bounds(), image.Black, image.Point{}, draw.Src)
+
+	d := &font.Drawer{
+		Dst:  dst,
+		Src:  image.White,
+		Face: face,
+	}
+	ss := []string{
+		"The quick brown fox jumps over the lazy dog.",
+		"Hello, 世界.",
+		"U+FFFD is \ufffd.",
+	}
+	for i, s := range ss {
+		d.Dot = fixed.P(20, 100*i+80)
+		dot0 := pt(d.Dot)
+		d.DrawString(s)
+		dot1 := pt(d.Dot)
+		dst.SetRGBA(dot0.X, dot0.Y, color.RGBA{0xff, 0x00, 0x00, 0xff})
+		dst.SetRGBA(dot1.X, dot1.Y, color.RGBA{0x00, 0x00, 0xff, 0xff})
+	}
+
+	out, err := os.Create("out.png")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer out.Close()
+	if err := png.Encode(out, dst); err != nil {
+		log.Fatal(err)
+	}
+}