diff options
Diffstat (limited to 'Godeps/_workspace/src/code.google.com/p/freetype-go/example')
5 files changed, 0 insertions, 569 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/freetype/main.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/example/freetype/main.go deleted file mode 100644 index 83b8c3e5e..000000000 --- a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/freetype/main.go +++ /dev/null @@ -1,143 +0,0 @@ -// Copyright 2010 The Freetype-Go Authors. All rights reserved. -// Use of this source code is governed by your choice of either the -// FreeType License or the GNU General Public License version 2 (or -// any later version), both of which can be found in the LICENSE file. - -package main - -import ( - "bufio" - "flag" - "fmt" - "image" - "image/color" - "image/draw" - "image/png" - "io/ioutil" - "log" - "os" - - "code.google.com/p/freetype-go/freetype" -) - -var ( - dpi = flag.Float64("dpi", 72, "screen resolution in Dots Per Inch") - fontfile = flag.String("fontfile", "../../testdata/luxisr.ttf", "filename of the ttf font") - hinting = flag.String("hinting", "none", "none | full") - size = flag.Float64("size", 12, "font size in points") - spacing = flag.Float64("spacing", 1.5, "line spacing (e.g. 2 means double spaced)") - wonb = flag.Bool("whiteonblack", false, "white text on a black background") -) - -var text = []string{ - "’Twas brillig, and the slithy toves", - "Did gyre and gimble in the wabe;", - "All mimsy were the borogoves,", - "And the mome raths outgrabe.", - "", - "“Beware the Jabberwock, my son!", - "The jaws that bite, the claws that catch!", - "Beware the Jubjub bird, and shun", - "The frumious Bandersnatch!”", - "", - "He took his vorpal sword in hand:", - "Long time the manxome foe he sought—", - "So rested he by the Tumtum tree,", - "And stood awhile in thought.", - "", - "And as in uffish thought he stood,", - "The Jabberwock, with eyes of flame,", - "Came whiffling through the tulgey wood,", - "And burbled as it came!", - "", - "One, two! One, two! and through and through", - "The vorpal blade went snicker-snack!", - "He left it dead, and with its head", - "He went galumphing back.", - "", - "“And hast thou slain the Jabberwock?", - "Come to my arms, my beamish boy!", - "O frabjous day! Callooh! Callay!”", - "He chortled in his joy.", - "", - "’Twas brillig, and the slithy toves", - "Did gyre and gimble in the wabe;", - "All mimsy were the borogoves,", - "And the mome raths outgrabe.", -} - -func main() { - flag.Parse() - - // Read the font data. - fontBytes, err := ioutil.ReadFile(*fontfile) - if err != nil { - log.Println(err) - return - } - font, err := freetype.ParseFont(fontBytes) - if err != nil { - log.Println(err) - return - } - - // Initialize the context. - fg, bg := image.Black, image.White - ruler := color.RGBA{0xdd, 0xdd, 0xdd, 0xff} - if *wonb { - fg, bg = image.White, image.Black - ruler = color.RGBA{0x22, 0x22, 0x22, 0xff} - } - rgba := image.NewRGBA(image.Rect(0, 0, 640, 480)) - draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src) - c := freetype.NewContext() - c.SetDPI(*dpi) - c.SetFont(font) - c.SetFontSize(*size) - c.SetClip(rgba.Bounds()) - c.SetDst(rgba) - c.SetSrc(fg) - switch *hinting { - default: - c.SetHinting(freetype.NoHinting) - case "full": - c.SetHinting(freetype.FullHinting) - } - - // Draw the guidelines. - for i := 0; i < 200; i++ { - rgba.Set(10, 10+i, ruler) - rgba.Set(10+i, 10, ruler) - } - - // Draw the text. - pt := freetype.Pt(10, 10+int(c.PointToFix32(*size)>>8)) - for _, s := range text { - _, err = c.DrawString(s, pt) - if err != nil { - log.Println(err) - return - } - pt.Y += c.PointToFix32(*size * *spacing) - } - - // Save that RGBA image to disk. - f, err := os.Create("out.png") - if err != nil { - log.Println(err) - os.Exit(1) - } - defer f.Close() - b := bufio.NewWriter(f) - err = png.Encode(b, rgba) - if err != nil { - log.Println(err) - os.Exit(1) - } - err = b.Flush() - if err != nil { - log.Println(err) - os.Exit(1) - } - fmt.Println("Wrote out.png OK.") -} diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/gamma/main.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/example/gamma/main.go deleted file mode 100644 index 4bf7e3309..000000000 --- a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/gamma/main.go +++ /dev/null @@ -1,79 +0,0 @@ -// Copyright 2010 The Freetype-Go Authors. All rights reserved. -// Use of this source code is governed by your choice of either the -// FreeType License or the GNU General Public License version 2 (or -// any later version), both of which can be found in the LICENSE file. - -package main - -import ( - "bufio" - "fmt" - "image" - "image/draw" - "image/png" - "log" - "os" - - "code.google.com/p/freetype-go/freetype/raster" -) - -func p(x, y int) raster.Point { - return raster.Point{ - X: raster.Fix32(x * 256), - Y: raster.Fix32(y * 256), - } -} - -func main() { - // Draw a rounded corner that is one pixel wide. - r := raster.NewRasterizer(50, 50) - r.Start(p(5, 5)) - r.Add1(p(5, 25)) - r.Add2(p(5, 45), p(25, 45)) - r.Add1(p(45, 45)) - r.Add1(p(45, 44)) - r.Add1(p(26, 44)) - r.Add2(p(6, 44), p(6, 24)) - r.Add1(p(6, 5)) - r.Add1(p(5, 5)) - - // Rasterize that curve multiple times at different gammas. - const ( - w = 600 - h = 200 - ) - rgba := image.NewRGBA(image.Rect(0, 0, w, h)) - draw.Draw(rgba, image.Rect(0, 0, w, h/2), image.Black, image.ZP, draw.Src) - draw.Draw(rgba, image.Rect(0, h/2, w, h), image.White, image.ZP, draw.Src) - mask := image.NewAlpha(image.Rect(0, 0, 50, 50)) - painter := raster.NewAlphaSrcPainter(mask) - gammas := []float64{1.0 / 10.0, 1.0 / 3.0, 1.0 / 2.0, 2.0 / 3.0, 4.0 / 5.0, 1.0, 5.0 / 4.0, 3.0 / 2.0, 2.0, 3.0, 10.0} - for i, g := range gammas { - draw.Draw(mask, mask.Bounds(), image.Transparent, image.ZP, draw.Src) - r.Rasterize(raster.NewGammaCorrectionPainter(painter, g)) - x, y := 50*i+25, 25 - draw.DrawMask(rgba, image.Rect(x, y, x+50, y+50), image.White, image.ZP, mask, image.ZP, draw.Over) - y += 100 - draw.DrawMask(rgba, image.Rect(x, y, x+50, y+50), image.Black, image.ZP, mask, image.ZP, draw.Over) - } - - // Save that RGBA image to disk. - f, err := os.Create("out.png") - if err != nil { - log.Println(err) - os.Exit(1) - } - defer f.Close() - b := bufio.NewWriter(f) - err = png.Encode(b, rgba) - if err != nil { - log.Println(err) - os.Exit(1) - } - err = b.Flush() - if err != nil { - log.Println(err) - os.Exit(1) - } - fmt.Println("Wrote out.png OK.") -} diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/raster/main.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/example/raster/main.go deleted file mode 100644 index 5e6c9815d..000000000 --- a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/raster/main.go +++ /dev/null @@ -1,178 +0,0 @@ -// Copyright 2010 The Freetype-Go Authors. All rights reserved. -// Use of this source code is governed by your choice of either the -// FreeType License or the GNU General Public License version 2 (or -// any later version), both of which can be found in the LICENSE file. - -package main - -import ( - "bufio" - "fmt" - "image" - "image/color" - "image/draw" - "image/png" - "log" - "os" - - "code.google.com/p/freetype-go/freetype/raster" -) - -type node struct { - x, y, degree int -} - -// These contours "outside" and "inside" are from the `A' glyph from the Droid -// Serif Regular font. - -var outside = []node{ - node{414, 489, 1}, - node{336, 274, 2}, - node{327, 250, 0}, - node{322, 226, 2}, - node{317, 203, 0}, - node{317, 186, 2}, - node{317, 134, 0}, - node{350, 110, 2}, - node{384, 86, 0}, - node{453, 86, 1}, - node{500, 86, 1}, - node{500, 0, 1}, - node{0, 0, 1}, - node{0, 86, 1}, - node{39, 86, 2}, - node{69, 86, 0}, - node{90, 92, 2}, - node{111, 99, 0}, - node{128, 117, 2}, - node{145, 135, 0}, - node{160, 166, 2}, - node{176, 197, 0}, - node{195, 246, 1}, - node{649, 1462, 1}, - node{809, 1462, 1}, - node{1272, 195, 2}, - node{1284, 163, 0}, - node{1296, 142, 2}, - node{1309, 121, 0}, - node{1326, 108, 2}, - node{1343, 96, 0}, - node{1365, 91, 2}, - node{1387, 86, 0}, - node{1417, 86, 1}, - node{1444, 86, 1}, - node{1444, 0, 1}, - node{881, 0, 1}, - node{881, 86, 1}, - node{928, 86, 2}, - node{1051, 86, 0}, - node{1051, 184, 2}, - node{1051, 201, 0}, - node{1046, 219, 2}, - node{1042, 237, 0}, - node{1034, 260, 1}, - node{952, 489, 1}, - node{414, 489, -1}, -} - -var inside = []node{ - node{686, 1274, 1}, - node{453, 592, 1}, - node{915, 592, 1}, - node{686, 1274, -1}, -} - -func p(n node) raster.Point { - x, y := 20+n.x/4, 380-n.y/4 - return raster.Point{ - X: raster.Fix32(x * 256), - Y: raster.Fix32(y * 256), - } -} - -func contour(r *raster.Rasterizer, ns []node) { - if len(ns) == 0 { - return - } - i := 0 - r.Start(p(ns[i])) - for { - switch ns[i].degree { - case -1: - // -1 signifies end-of-contour. - return - case 1: - i += 1 - r.Add1(p(ns[i])) - case 2: - i += 2 - r.Add2(p(ns[i-1]), p(ns[i])) - default: - panic("bad degree") - } - } -} - -func showNodes(m *image.RGBA, ns []node) { - for _, n := range ns { - p := p(n) - x, y := int(p.X)/256, int(p.Y)/256 - if !(image.Point{x, y}).In(m.Bounds()) { - continue - } - var c color.Color - switch n.degree { - case 0: - c = color.RGBA{0, 255, 255, 255} - case 1: - c = color.RGBA{255, 0, 0, 255} - case 2: - c = color.RGBA{255, 0, 0, 255} - } - if c != nil { - m.Set(x, y, c) - } - } -} - -func main() { - // Rasterize the contours to a mask image. - const ( - w = 400 - h = 400 - ) - r := raster.NewRasterizer(w, h) - contour(r, outside) - contour(r, inside) - mask := image.NewAlpha(image.Rect(0, 0, w, h)) - p := raster.NewAlphaSrcPainter(mask) - r.Rasterize(p) - - // Draw the mask image (in gray) onto an RGBA image. - rgba := image.NewRGBA(image.Rect(0, 0, w, h)) - gray := image.NewUniform(color.Alpha{0x1f}) - draw.Draw(rgba, rgba.Bounds(), image.Black, image.ZP, draw.Src) - draw.DrawMask(rgba, rgba.Bounds(), gray, image.ZP, mask, image.ZP, draw.Over) - showNodes(rgba, outside) - showNodes(rgba, inside) - - // Save that RGBA image to disk. - f, err := os.Create("out.png") - if err != nil { - log.Println(err) - os.Exit(1) - } - defer f.Close() - b := bufio.NewWriter(f) - err = png.Encode(b, rgba) - if err != nil { - log.Println(err) - os.Exit(1) - } - err = b.Flush() - if err != nil { - log.Println(err) - os.Exit(1) - } - fmt.Println("Wrote out.png OK.") -} diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/round/main.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/example/round/main.go deleted file mode 100644 index e2435f9a2..000000000 --- a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/round/main.go +++ /dev/null @@ -1,96 +0,0 @@ -// Copyright 2010 The Freetype-Go Authors. All rights reserved. -// Use of this source code is governed by your choice of either the -// FreeType License or the GNU General Public License version 2 (or -// any later version), both of which can be found in the LICENSE file. - -// This program visualizes the quadratic approximation to the circle, used to -// implement round joins when stroking paths. The approximation is used in the -// stroking code for arcs between 0 and 45 degrees, but is visualized here -// between 0 and 90 degrees. The discrepancy between the approximation and the -// true circle is clearly visible at angles above 65 degrees. -package main - -import ( - "bufio" - "fmt" - "image" - "image/color" - "image/draw" - "image/png" - "log" - "math" - "os" - - "code.google.com/p/freetype-go/freetype/raster" -) - -func main() { - const ( - n = 17 - r = 256 * 80 - ) - s := raster.Fix32(r * math.Sqrt(2) / 2) - t := raster.Fix32(r * math.Tan(math.Pi/8)) - - m := image.NewRGBA(image.Rect(0, 0, 800, 600)) - draw.Draw(m, m.Bounds(), image.NewUniform(color.RGBA{63, 63, 63, 255}), image.ZP, draw.Src) - mp := raster.NewRGBAPainter(m) - mp.SetColor(image.Black) - z := raster.NewRasterizer(800, 600) - - for i := 0; i < n; i++ { - cx := raster.Fix32(25600 + 51200*(i%4)) - cy := raster.Fix32(2560 + 32000*(i/4)) - c := raster.Point{X: cx, Y: cy} - theta := math.Pi * (0.5 + 0.5*float64(i)/(n-1)) - dx := raster.Fix32(r * math.Cos(theta)) - dy := raster.Fix32(r * math.Sin(theta)) - d := raster.Point{X: dx, Y: dy} - // Draw a quarter-circle approximated by two quadratic segments, - // with each segment spanning 45 degrees. - z.Start(c) - z.Add1(c.Add(raster.Point{X: r, Y: 0})) - z.Add2(c.Add(raster.Point{X: r, Y: t}), c.Add(raster.Point{X: s, Y: s})) - z.Add2(c.Add(raster.Point{X: t, Y: r}), c.Add(raster.Point{X: 0, Y: r})) - // Add another quadratic segment whose angle ranges between 0 and 90 degrees. - // For an explanation of the magic constants 22, 150, 181 and 256, read the - // comments in the freetype/raster package. - dot := 256 * d.Dot(raster.Point{X: 0, Y: r}) / (r * r) - multiple := raster.Fix32(150 - 22*(dot-181)/(256-181)) - z.Add2(c.Add(raster.Point{X: dx, Y: r + dy}.Mul(multiple)), c.Add(d)) - // Close the curve. - z.Add1(c) - } - z.Rasterize(mp) - - for i := 0; i < n; i++ { - cx := raster.Fix32(25600 + 51200*(i%4)) - cy := raster.Fix32(2560 + 32000*(i/4)) - for j := 0; j < n; j++ { - theta := math.Pi * float64(j) / (n - 1) - dx := raster.Fix32(r * math.Cos(theta)) - dy := raster.Fix32(r * math.Sin(theta)) - m.Set(int((cx+dx)/256), int((cy+dy)/256), color.RGBA{255, 255, 0, 255}) - } - } - - // Save that RGBA image to disk. - f, err := os.Create("out.png") - if err != nil { - log.Println(err) - os.Exit(1) - } - defer f.Close() - b := bufio.NewWriter(f) - err = png.Encode(b, m) - if err != nil { - log.Println(err) - os.Exit(1) - } - err = b.Flush() - if err != nil { - log.Println(err) - os.Exit(1) - } - fmt.Println("Wrote out.png OK.") -} diff --git a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/truetype/main.go b/Godeps/_workspace/src/code.google.com/p/freetype-go/example/truetype/main.go deleted file mode 100644 index 747694b61..000000000 --- a/Godeps/_workspace/src/code.google.com/p/freetype-go/example/truetype/main.go +++ /dev/null @@ -1,73 +0,0 @@ -// Copyright 2010 The Freetype-Go Authors. All rights reserved. -// Use of this source code is governed by your choice of either the -// FreeType License or the GNU General Public License version 2 (or -// any later version), both of which can be found in the LICENSE file. - -package main - -import ( - "flag" - "fmt" - "io/ioutil" - "log" - - "code.google.com/p/freetype-go/freetype/truetype" -) - -var fontfile = flag.String("fontfile", "../../testdata/luxisr.ttf", "filename of the ttf font") - -func printBounds(b truetype.Bounds) { - fmt.Printf("XMin:%d YMin:%d XMax:%d YMax:%d\n", b.XMin, b.YMin, b.XMax, b.YMax) -} - -func printGlyph(g *truetype.GlyphBuf) { - printBounds(g.B) - fmt.Print("Points:\n---\n") - e := 0 - for i, p := range g.Point { - fmt.Printf("%4d, %4d", p.X, p.Y) - if p.Flags&0x01 != 0 { - fmt.Print(" on\n") - } else { - fmt.Print(" off\n") - } - if i+1 == int(g.End[e]) { - fmt.Print("---\n") - e++ - } - } -} - -func main() { - flag.Parse() - fmt.Printf("Loading fontfile %q\n", *fontfile) - b, err := ioutil.ReadFile(*fontfile) - if err != nil { - log.Println(err) - return - } - font, err := truetype.Parse(b) - if err != nil { - log.Println(err) - return - } - fupe := font.FUnitsPerEm() - printBounds(font.Bounds(fupe)) - fmt.Printf("FUnitsPerEm:%d\n\n", fupe) - - c0, c1 := 'A', 'V' - - i0 := font.Index(c0) - hm := font.HMetric(fupe, i0) - g := truetype.NewGlyphBuf() - err = g.Load(font, fupe, i0, truetype.NoHinting) - if err != nil { - log.Println(err) - return - } - fmt.Printf("'%c' glyph\n", c0) - fmt.Printf("AdvanceWidth:%d LeftSideBearing:%d\n", hm.AdvanceWidth, hm.LeftSideBearing) - printGlyph(g) - i1 := font.Index(c1) - fmt.Printf("\n'%c', '%c' Kerning:%d\n", c0, c1, font.Kerning(fupe, i0, i1)) -} |