1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 package main 8 9 /* 10 This is a translation of the example code in 11 "experimental/c-api-example/skia-c-example.c" to test the 12 go-skia package. 13 */ 14 15 import ( 16 "log" 17 "os" 18 19 skia "skia.googlesource.com/skia/experimental/go-skia" 20 ) 21 22 func main() { 23 imgInfo := &skia.ImageInfo{ 24 Width: 640, 25 Height: 480, 26 ColorType: skia.GetDefaultColortype(), 27 AlphaType: skia.PREMUL_ALPHATYPE, 28 } 29 30 surface, err := skia.NewRasterSurface(imgInfo) 31 if err != nil { 32 log.Fatalln(err) 33 } 34 35 canvas := surface.Canvas() 36 37 fillPaint := skia.NewPaint() 38 fillPaint.SetColor(0xFF0000FF) 39 canvas.DrawPaint(fillPaint) 40 fillPaint.SetColor(0xFF00FFFF) 41 42 rect := skia.NewRect(100, 100, 540, 380) 43 canvas.DrawRect(rect, fillPaint) 44 45 strokePaint := skia.NewPaint() 46 strokePaint.SetColor(0xFFFF0000) 47 strokePaint.SetAntiAlias(true) 48 strokePaint.SetStroke(true) 49 strokePaint.SetStrokeWidth(5.0) 50 51 path := skia.NewPath() 52 path.MoveTo(50, 50) 53 path.LineTo(590, 50) 54 path.CubicTo(-490, 50, 1130, 430, 50, 430) 55 path.LineTo(590, 430) 56 canvas.DrawPath(path, strokePaint) 57 58 fillPaint.SetColor(0x8000FF00) 59 canvas.DrawOval(skia.NewRect(120, 120, 520, 360), fillPaint) 60 61 // // Get a skia image from the surface. 62 skImg := surface.Image() 63 64 // Write new image to file if we have one. 65 if skImg != nil { 66 out, err := os.Create("testimage.png") 67 if err != nil { 68 log.Fatal(err) 69 } 70 defer out.Close() 71 72 if err := skImg.WritePNG(out); err != nil { 73 log.Fatalf("Unable to write png: %s", err) 74 } 75 } 76 } 77
