func main() {
// Note that the colours are stored as separate *normalized* RGB components
arglist := []float64{
0, 0,
// RGB black
0, 0, 0,
// The y coordinate is filled in later
0, -1,
// RGB white
1, 1, 1,
}
// arguments for MagickFunctionImage
funclist := []float64{4, -4, 1}
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
mw.ReadImage("beijing_md.jpg")
// fill in the Y coordinate now that we can get the image dimensions
arglist[6] = float64(mw.GetImageHeight() - 1)
mw.SigmoidalContrastImage(true, 15, imagick.QUANTUM_RANGE*30/100)
cw := mw.Clone()
defer cw.Destroy()
cw.SparseColorImage(imagick.CHANNELS_RGB, imagick.INTERPOLATE_BARYCENTRIC_COLOR, arglist)
// Do the polynomial function
cw.FunctionImage(imagick.FUNCTION_POLYNOMIAL, funclist)
// -set option:compose:args 15
if err := cw.SetImageArtifact("compose:args", "15"); err != nil {
panic(err)
}
mw.CompositeImage(cw, imagick.COMPOSITE_OP_BLUR, 0, 0)
mw.WriteImage("beijing_model.jpg")
}
func main() {
flag.Parse()
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
var err error
if flag.NArg() < 1 {
fmt.Println("Usage: imagick_profiles <imgfile> [<proftype>]\n")
os.Exit(1)
}
basename := flag.Arg(0)
err = mw.ReadImage(basename)
if err != nil {
fmt.Println("ReadImage Error:", err)
os.Exit(1)
}
if flag.NArg() == 1 {
profs := mw.GetImageProfiles("*")
fmt.Println(profs)
} else {
proftype := flag.Arg(1)
prof := mw.GetImageProfile(proftype)
fmt.Print(prof)
}
}
func main() {
var err error
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
bg := imagick.NewPixelWand()
defer bg.Destroy()
fg := imagick.NewPixelWand()
defer fg.Destroy()
err = mw.ReadImage("http://www.imagemagick.org/Usage/images/cyclops_sm.gif")
if err != nil {
panic(err)
}
bg.SetColor("white")
mw.BorderImage(bg, 1, 1)
mw.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_SET)
fg.SetColor("none")
channel := imagick.CHANNELS_RGB | imagick.CHANNEL_ALPHA
// Floodfill the "background" colour with the "foreground" colour
// starting at coordinate 0,0 using a fuzz of 20
mw.FloodfillPaintImage(channel, fg, 20, bg, 0, 0, false)
mw.ShaveImage(1, 1)
mw.DisplayImage(os.Getenv("DISPLAY"))
if err != nil {
panic(err)
}
}
// Text effect 2 - tiled text using the builtin checkerboard pattern
// Anthony's Tiled Font effect
func textEffect2() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
setTilePattern(dw, "#check", "pattern:checkerboard")
pw.SetColor("lightblue")
// Create a new transparent image
mw.NewImage(320, 100, pw)
// Set up a 72 point font
dw.SetFont("Verdana-Bold-Italic")
dw.SetFontSize(72)
// Now draw the text
dw.Annotation(28, 68, "Magick")
// Draw the image on to the mw
mw.DrawImage(dw)
// Trim the image
mw.TrimImage(0)
// Add a transparent border
pw.SetColor("lightblue")
mw.BorderImage(pw, 5, 5)
// and write it
mw.WriteImage("text_pattern.png")
}
// Text effect 4 - bevelled font http://www.imagemagick.org/Usage/fonts/#bevel
func textEffect4() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
// Create a 320x100 canvas
pw.SetColor("gray")
mw.NewImage(320, 100, pw)
// Set up a 72 point font
dw.SetFont("Verdana-Bold-Italic")
dw.SetFontSize(72)
// Set up a 72 point white font
pw.SetColor("white")
dw.SetFillColor(pw)
// Now draw the text
dw.Annotation(25, 65, "Magick")
// Draw the image on to the mw
mw.DrawImage(dw)
// the "gray" parameter must be true to get the effect shown on Anthony's page
mw.ShadeImage(true, 140, 60)
pw.SetColor("yellow")
dw.SetFillColor(pw)
cpw := imagick.NewPixelWand()
defer cpw.Destroy()
cpw.SetColor("gold")
mw.ColorizeImage(pw, cpw)
// and write it
mw.WriteImage("text_bevel.png")
}
// Text effect 7 - Polar distortion
func textEffect7() {
imagick.Initialize()
defer imagick.Terminate()
// This one uses d_args[0]
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
// Create a 320x200 transparent canvas
pw.SetColor("none")
mw.NewImage(320, 200, pw)
// Set up a 72 point font
dw.SetFont("Verdana-Bold-Italic")
dw.SetFontSize(72)
// Now draw the text
dw.Annotation(25, 65, "Magick")
// Draw the image on to the mw
mw.DrawImage(dw)
d_args[0] = 0.0
// DON'T FORGET to set the correct number of arguments here
mw.DistortImage(imagick.DISTORTION_POLAR, d_args, true)
//mw.ResetImagePage("")
// Trim the image again
mw.TrimImage(0)
// Add the border
pw.SetColor("none")
mw.BorderImage(pw, 10, 10)
// and write it
mw.WriteImage("text_polar.png")
}
func main() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
lw := imagick.NewMagickWand()
defer lw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
// Create the initial 640x480 transparent canvas
pw.SetColor("none")
mw.NewImage(640, 480, pw)
pw.SetColor("white")
dw.SetFillColor(pw)
dw.RoundRectangle(15, 15, 624, 464, 15, 15)
mw.DrawImage(dw)
lw.ReadImage("logo:")
// Note that MagickSetImageCompose is usually only used for the MagickMontageImage
// function and isn't used or needed by MagickCompositeImage
mw.CompositeImage(lw, imagick.COMPOSITE_OP_SRC_IN, 0, 0)
/* Write the new image */
mw.WriteImage("mask_result.png")
}
func main() {
imagick.Initialize()
defer imagick.Terminate()
// Start chunking workers
imagesChan := make(chan []byte)
for i := 0; i < chunkersCnt; i++ {
go scheduleChunking(imagesChan)
}
// Start token store cleaner
go tokenStoreCleaner(time.Tick(tokenCleanup))
// Serve Assets
http.Handle("/css/", http.FileServer(http.Dir("./assets")))
http.Handle("/js/", http.FileServer(http.Dir("./assets")))
http.Handle("/fonts/", http.FileServer(http.Dir("./assets")))
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
switch {
case r.Method == "POST" && r.URL.Path == "/":
handlePost(imagesChan, w, r)
case r.Method == "GET" && r.URL.Path == "/":
handleGetIndex(w, r)
default:
log.Println("404: ", r.URL.Path)
http.NotFound(w, r)
}
})
log.Println("Server started")
log.Fatal(http.ListenAndServe(":8080", nil))
}
func TestResize(t *testing.T) {
imagick.Initialize()
defer imagick.Terminate()
tests := []*ResizeCase{
{"fixture/circle.png", 30, 150},
}
if err := os.Mkdir("test-out", os.ModeDir|os.ModePerm); os.IsNotExist(err) {
t.Fatal(err)
}
for i, x := range tests {
before, err := ioutil.ReadFile(x.filename)
if err != nil {
t.Fatal(err)
}
after, err := Resize(before, x.w, x.h)
if err != nil {
t.Fatal(err)
}
filename := fmt.Sprintf("test-out/resize-%dx%d-%d%s", x.w, x.h, i, filepath.Ext(x.filename))
err = ioutil.WriteFile(filename, after, os.ModePerm)
if err != nil {
t.Fatal(err)
}
}
}
// Text effect 3 - arc font (similar to http://www.imagemagick.org/Usage/fonts/#arc)
func textEffect3() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
// Create a 320x100 lightblue canvas
pw.SetColor("lightblue")
mw.NewImage(320, 100, pw)
// Set up a 72 point font
dw.SetFont("Verdana-Bold-Italic")
dw.SetFontSize(72)
// Now draw the text
dw.Annotation(25, 65, "Magick")
// Draw the image on to the mw
mw.DrawImage(dw)
mw.DistortImage(imagick.DISTORTION_ARC, dargs, false)
// Trim the image
mw.TrimImage(0)
// Add the border
pw.SetColor("lightblue")
mw.BorderImage(pw, 10, 10)
// and write it
mw.WriteImage("text_arc.png")
}
// Example 2
// Rotate logo: 30 degrees around the point (300,100)
// Since rotation is done around the origin, we must translate
// the point (300,100) up to the origin, do the rotation, and
// then translate back again
//
func example2() {
imagick.Initialize()
defer imagick.Terminate()
t1 := make([]float64, 6)
r := make([]float64, 6)
t2 := make([]float64, 6)
temp := make([]float64, 6)
result := make([]float64, 6)
mw := imagick.NewMagickWand()
defer mw.Destroy()
mw.ReadImage("logo:")
// Initialize the required affines
// translate (300,100) to origin
set_translate_affine(t1, -300, -100)
// rotate clockwise by 30 degrees
set_rotate_affine(r, 30)
// translate back again
set_translate_affine(t2, 300, 100)
// Now multiply the affine sequence
// temp = t1*r
affine_multiply(temp, t1, r)
// result = temp*t2
affine_multiply(result, temp, t2)
mw.DistortImage(imagick.DISTORTION_AFFINE_PROJECTION, result, false)
mw.WriteImage("logo_affine_2.jpg")
}
func Draw(text string, name string) {
imagick.Initialize()
defer imagick.Terminate()
// Current coordinates of text
var dx float64 = 20
mw := imagick.NewMagickWand()
dw := imagick.NewDrawingWand()
defer mw.Destroy()
defer dw.Destroy()
// Set the size of the image
mw.SetSize(285, 50)
mw.ReadImage("../assets/images/bg.gif")
// Start near the left edge
dw.SetFontSize(40)
// Note that we must free up the fontmetric array once we're done with it
list := strings.Split(text, " ")
for _, item := range list {
writeWord(mw, dw, &dx, item)
}
mw.DrawImage(dw)
// Now write the magickwand image
mw.WriteImage(name)
}
func getTextImage(text string, size int) []byte {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
l := len(text)
w := size * 3 * (l + 6)
h := size * 2
pw.SetColor("none")
mw.NewImage(uint(w), uint(h), pw)
pw.SetColor("white")
dw.SetFillColor(pw)
dw.SetFont("/usr/share/fonts/default/TrueType/msyh.ttf")
dw.SetFontSize(float64(size))
dw.Annotation(0, float64(size), "ctrip © "+text)
mw.DrawImage(dw)
mw.TrimImage(0)
mw.ResetImagePage("")
cw := mw.Clone()
pw.SetColor("black")
mw.SetImageBackgroundColor(pw)
mw.ShadowImage(100, 1, 0, 0)
mw.CompositeImage(cw, imagick.COMPOSITE_OP_OVER, 1, 1)
cw.Destroy()
mw.SetImageFormat("PNG")
return mw.GetImageBlob()
}
func (c Snappshot) Screenshot(res string) revel.Result {
s := strings.Split(res, "x")
width, _ := strconv.Atoi(s[0])
height, _ := strconv.Atoi(s[1])
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
cw := imagick.NewPixelWand()
cw2 := imagick.NewPixelWand()
cw.SetColor("darkgray")
cw2.SetColor("white")
mw.NewImage(uint(width), uint(height), cw)
dw.SetTextAlignment(imagick.ALIGN_CENTER)
dw.SetFillColor(cw2)
dw.SetFontSize(150)
cw2.SetColor("black")
dw.SetStrokeColor(cw2)
dw.Annotation(float64(width)/2, float64(height)/2, res)
mw.DrawImage(dw)
mw.SetImageFormat("jpg")
output := mw.GetImageBlob()
return JPGImage(output)
}
// Extracts thumbnail
func (c *Convertor) ExtractThumbnail(file string, info os.FileInfo) {
c.CurrFile += 1
cover, err := c.GetCoverImage(file, info)
if err != nil {
fmt.Fprintf(os.Stderr, "Error GetCoverImage: %v\n", err.Error())
return
}
if err != nil {
fmt.Fprintf(os.Stderr, "Error Thumbnail: %v\n", err.Error())
return
}
if c.Opts.Width > 0 || c.Opts.Height > 0 {
if c.Opts.Fit {
cover = imaging.Fit(cover, c.Opts.Width, c.Opts.Height, filters[c.Opts.Filter])
} else {
cover = imaging.Resize(cover, c.Opts.Width, c.Opts.Height, filters[c.Opts.Filter])
}
} else {
cover = imaging.Resize(cover, 256, 0, filters[c.Opts.Filter])
}
imagick.Initialize()
mw := imagick.NewMagickWand()
defer mw.Destroy()
b := new(bytes.Buffer)
png.Encode(b, cover)
err = mw.ReadImageBlob(b.Bytes())
if err != nil {
fmt.Fprintf(os.Stderr, "Error ReadImageBlob: %v\n", err.Error())
}
var fileuri string
var filename string
if c.Opts.Outfile == "" {
fileuri = "file://" + file
filename = filepath.Join(c.Opts.Outdir, fmt.Sprintf("%x.png", md5.Sum([]byte(fileuri))))
} else {
abs, _ := filepath.Abs(c.Opts.Outfile)
fileuri = "file://" + abs
filename = abs
}
mw.SetImageFormat("PNG")
mw.SetImageProperty("Software", "CBconvert")
mw.SetImageProperty("Description", "Thumbnail of "+fileuri)
mw.SetImageProperty("Thumb::URI", fileuri)
mw.SetImageProperty("Thumb::MTime", strconv.FormatInt(info.ModTime().Unix(), 10))
mw.SetImageProperty("Thumb::Size", strconv.FormatInt(info.Size(), 10))
mw.SetImageProperty("Thumb::Mimetype", mime.TypeByExtension(filepath.Ext(file)))
mw.WriteImage(filename)
}
// Text effect 5 and 6 - Plain text and then Barrel distortion
func textEffect5And6() {
imagick.Initialize()
defer imagick.Terminate()
// This one uses d_args
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
// Create a 320x100 transparent canvas
pw.SetColor("none")
mw.NewImage(320, 100, pw)
// Set up a 72 point font
dw.SetFont("Verdana-Bold-Italic")
dw.SetFontSize(72)
// Now draw the text
dw.Annotation(25, 65, "Magick")
// Draw the image on to the mw
mw.DrawImage(dw)
mw.WriteImage("text_plain.png")
// Trim the image
mw.TrimImage(0)
// Add the border
pw.SetColor("none")
mw.BorderImage(pw, 10, 10)
//mw.SetImageMatte(true)
//mw.SetImageVirtualPixelMethod(TransparentVirtualPixelMethod)
// d_args[0] = 0.1;d_args[1] = -0.25;d_args[2] = -0.25; [3] += .1
// The first value should be positive. If it is negative the image is *really* distorted
d_args[0] = 0.0
d_args[1] = 0.0
d_args[2] = 0.5
// d_args[3] should normally be chosen such the sum of all 4 values is 1
// so that the result is the same size as the original
// You can override the sum with a different value
// If the sum is greater than 1 the resulting image will be smaller than the original
d_args[3] = 1 - (d_args[0] + d_args[1] + d_args[2])
// Make the result image smaller so that it isn't as likely
// to overflow the edges
// d_args[3] += 0.1
// 0.0,0.0,0.5,0.5,0.0,0.0,-0.5,1.9
d_args[3] = 0.5
d_args[4] = 0.0
d_args[5] = 0.0
d_args[6] = -0.5
d_args[7] = 1.9
// DON'T FORGET to set the correct number of arguments here
mw.DistortImage(imagick.DISTORTION_BARREL, d_args, true)
//mw.ResetImagePage("")
// Trim the image again
mw.TrimImage(0)
// Add the border
pw.SetColor("none")
mw.BorderImage(pw, 10, 10)
// and write it
mw.WriteImage("text_barrel.png")
}
func main() {
imagick.Initialize()
// Schedule cleanup
defer imagick.Terminate()
http.HandleFunc("/", handler)
http.ListenAndServe(":8080", nil)
}
func main() {
imagick.Initialize()
defer imagick.Terminate()
// Current coordinates of text
var dx, dy float64
// Width of a space in current font/size
var sx float64
mw := imagick.NewMagickWand()
dw := imagick.NewDrawingWand()
// Set the size of the image
mw.SetSize(300, 100)
//mw.SetImageAlphaChannel(imagick.CHANNEL_ALPHA)
mw.ReadImage("xc:white")
// DO NOT SET GRAVITY - it makes text placement more complicated
// (unless it does exactly what you wanted anyway).
// Start near the left edge
dx = 10
// If we know the largest font we're using, we can set the y coordinate
// fairly accurately. In this case it is the 72 point Times font, so to
// place the text such that the largest almost touches the top of the image
// we just add the text height to the descender to give the coordinate for
// our baseline.
// In this case the largest is the 72 point Times-New-Roman so I'll use that
// to compute the baseline
dw.SetFontSize(72)
dw.SetFont("Times-New-Roman")
fm := mw.QueryFontMetrics(dw, "M")
dy = fm.CharacterHeight + fm.Descender
// Note that we must free up the fontmetric array once we're done with it
// this
draw_setfont(mw, dw, "Arial", 48, "#40FF80", &sx)
draw_metrics(mw, dw, &dx, dy, sx, "this")
// is
// A NULL signals to draw_setfont that the font stays the same
draw_setfont(mw, dw, "", 24, "#8040BF", &sx)
draw_metrics(mw, dw, &dx, dy, sx, "is")
// my
draw_setfont(mw, dw, "Times-New-Roman", 18, "#BF00BF", &sx)
draw_metrics(mw, dw, &dx, dy, sx, "my")
// text
draw_setfont(mw, dw, "", 72, "#0F0FBF", &sx)
draw_metrics(mw, dw, &dx, dy, sx, "text")
mw.DrawImage(dw)
// Now write the magickwand image
mw.WriteImage("metric1.gif")
}
func main() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
aw := imagick.NewMagickWand()
defer aw.Destroy()
// Read the first input image
if err := mw.ReadImage("bunny_grass.gif"); err != nil {
panic(err)
}
// We need a separate wand to do this bit in parentheses
if err := aw.ReadImage("bunny_anim.gif"); err != nil {
panic(err)
}
aw.ResetImagePage("0x0+5+15!")
// Now we have to add the images in the aw wand on to the end
// of the mw wand.
mw.AddImage(aw)
// We can now destroy the aw wand so that it can be used
// for the next operation
aw.Destroy()
// -coalesce
aw = mw.CoalesceImages()
// do "-delete 0" by copying the images from the "aw" wand to
// the "mw" wand but omit the first one
// free up the mw wand and recreate it for this step
mw.Destroy()
mw = imagick.NewMagickWand()
for i := 1; i < int(aw.GetNumberImages()); i++ {
aw.SetIteratorIndex(i)
tw := aw.GetImage()
mw.AddImage(tw)
tw.Destroy()
}
mw.ResetIterator()
aw.Destroy()
// -deconstruct
// Anthony says that MagickDeconstructImages is equivalent
// to MagickCompareImagesLayers so we'll use that
aw = mw.CompareImageLayers(imagick.IMAGE_LAYER_COMPARE_ANY)
// -loop 0
aw.SetOption("loop", "0")
// write the images into one file
if err := aw.WriteImages("bunny_bgnd.gif", true); err != nil {
panic(err)
}
}
// Example 4
// Create a rotated gradient
// See: http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=12707
// The affine in this one is essentially the same as the one in Example 2 but
// this example has a different use for the result
func example4() {
imagick.Initialize()
defer imagick.Terminate()
t1 := make([]float64, 6)
r := make([]float64, 6)
t2 := make([]float64, 6)
temp := make([]float64, 6)
result := make([]float64, 6)
// Dimensions of the final rectangle
w := uint(600)
h := uint(100)
// angle of clockwise rotation
theta := 15.0 // degrees
// Convert theta to radians
rad_theta := DegreesToRadians(theta)
// Compute the dimensions of the rectangular gradient
gw := (uint)(float64(w)*math.Cos(rad_theta) + float64(h)*math.Sin(rad_theta) + 0.5)
gh := (uint)(float64(w)*math.Sin(rad_theta) + float64(h)*math.Cos(rad_theta) + 0.5)
// Don't let the rotation make the gradient rectangle any smaller
// than the required output
if gw < w {
gw = w
}
if gh < h {
gh = h
}
mw := imagick.NewMagickWand()
defer mw.Destroy()
mw.SetSize(gw, gh)
mw.ReadImage("gradient:white-black")
// Initialize the required affines
// translate centre of gradient to origin
set_translate_affine(t1, float64(-gw)/2.0, float64(-gh)/2.0)
// rotate clockwise by theta degrees
set_rotate_affine(r, theta)
// translate back again
set_translate_affine(t2, float64(gw)/2.0, float64(gh)/2.0)
// Now multiply the affine sequences
// temp = t1*r
affine_multiply(temp, t1, r)
// result = temp*t2
affine_multiply(result, temp, t2)
mw.DistortImage(imagick.DISTORTION_AFFINE_PROJECTION, result, false)
// Get the size of the distorted image and crop out the middle
nw := mw.GetImageWidth()
nh := mw.GetImageHeight()
mw.CropImage(w, h, int((nw-w)/2), int((nh-h)/2))
mw.WriteImage("rotgrad_2.png")
}
func main() {
imagick.Initialize()
mw = imagick.NewMagickWand()
defer mw.Destroy()
h := histogram(os.Args[0])
enc := json.NewEncoder(os.Stdout)
enc.Encode(h)
}
func Resize(w, h uint, blob []byte) []byte {
imagick.Initialize()
defer imagick.Terminate()
wand := imagick.NewMagickWand()
defer wand.Destroy()
_ = wand.ReadImageBlob(blob)
wand.ResizeImage(w, h, imagick.FILTER_LANCZOS2_SHARP, 1)
return wand.GetImageBlob()
}
func (ng Engine) Initialize(tmpDir string) error {
if tmpDir != "" {
if err := os.MkdirAll(tmpDir, 0755); err != nil {
return err
}
ng.tmpDir = tmpDir
os.Setenv("MAGICK_TMPDIR", tmpDir)
ng.SweepTmpDir()
}
imagick.Initialize()
return nil
}
// Encode image to file (ImageMagick)
func (c *Convertor) encodeImageMagick(i image.Image, filename string) (err error) {
imagick.Initialize()
mw := imagick.NewMagickWand()
defer mw.Destroy()
err = mw.ReadImageBlob(c.GetImageBytes(i))
if err != nil {
fmt.Fprintf(os.Stderr, "Error ReadImageBlob: %v\n", err.Error())
return
}
if c.Opts.Grayscale {
c := mw.GetImageColors()
mw.QuantizeImage(c, imagick.COLORSPACE_GRAY, 8, true, true)
}
switch filepath.Ext(filename) {
case ".png":
mw.SetImageFormat("PNG")
mw.WriteImage(filename)
case ".tif":
case ".tiff":
mw.SetImageFormat("TIFF")
mw.WriteImage(filename)
case ".gif":
mw.SetImageFormat("GIF")
mw.WriteImage(filename)
case ".bmp":
w := imagick.NewPixelWand()
w.SetColor("black")
defer w.Destroy()
cs := mw.GetImageColorspace()
if c.Opts.Grayscale {
cs = imagick.COLORSPACE_GRAY
}
mw.SetImageFormat("BMP3")
mw.SetImageBackgroundColor(w)
mw.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_REMOVE)
mw.SetImageAlphaChannel(imagick.ALPHA_CHANNEL_DEACTIVATE)
mw.SetImageMatte(false)
mw.SetImageCompression(imagick.COMPRESSION_NO)
mw.QuantizeImage(16, cs, 8, true, true)
mw.WriteImage(filename)
default:
mw.SetImageFormat("JPEG")
mw.WriteImage(filename)
}
return
}
func NewContext(cfgFile string) (*ZContext, error) {
//初始化imagemagick
imagick.Initialize()
//加载配置config.ini文件
cfg, err := LoadConfig(cfgFile)
if err != nil {
return nil, err
}
//log日志
var log *ZLogger
logOutput := cfg.System.LogOutput
if logOutput == "file" {
log, err = NewFileLogger("gimg", 0, cfg.System.LogName)
} else if logOutput == "console" {
log, err = NewLogger("gimg", 0)
} else {
return nil, fmt.Errorf("初始化logo日志失败！")
}
if err != nil {
return nil, err
}
//cache缓存
var cache *ZCache
if cfg.Cache.Cache == 1 {
// var client *memcache.Client
// cacheAddr := fmt.Sprintf("%s:%d", cfg.Cache.MemcacheHost, cfg.Cache.MemcachePort)
// client = memcache.New(cacheAddr)
cache = NewCache(cfg.Cache.MemcacheHost, cfg.Cache.MemcachePort)
} else {
cache = nil
}
//初始化imagemagick
img := NewImage()
//redisDB缓存
redisDB, err := NewRedisDB(cfg.Storage.SsdbHost, cfg.Storage.SsdbPort)
if err != nil {
return nil, err
}
return &ZContext{Config: cfg,
Logger: log,
Cache: cache,
Image: img,
Redis: redisDB,
}, nil
}
func init() {
imagick.Initialize()
ImageHandler.Func = imageHandler
num := runtime.NumCPU() * 4
requestContexts = make(RequestContexts, num)
for i := 0; i < num; i++ {
requestContexts <- &RequestContext{
Wand: imagick.NewMagickWand(),
}
}
}
func init() {
rand.Seed(time.Now().UTC().UnixNano())
log.SetFlags(log.Flags() | log.Llongfile)
//currentDir, _ := filepath.Abs(filepath.Dir(os.Args[0]))
filePath = flag.String("f", "/home/joakim/Go/src/github.com/joakimp1/gofaces", "Path to images.")
flag.Parse()
imagick.Initialize()
defer imagick.Terminate()
}
// Actually placed screenshot onto background image
func placeit(image_id string, xml_data Result, image []byte) string {
imagick.Initialize()
defer imagick.Terminate()
width, _ := strconv.Atoi(xml_data.Device.Resolution.Width)
height, _ := strconv.Atoi(xml_data.Device.Resolution.Height)
x_positions := make([]int, 4)
x_positions[0], _ = strconv.Atoi(xml_data.Device.Placement.Top_left_x)
x_positions[1], _ = strconv.Atoi(xml_data.Device.Placement.Top_right_x)
x_positions[2], _ = strconv.Atoi(xml_data.Device.Placement.Bottom_right_x)
x_positions[3], _ = strconv.Atoi(xml_data.Device.Placement.Bottom_left_x)
y_positions := make([]int, 4)
y_positions[0], _ = strconv.Atoi(xml_data.Device.Placement.Top_left_y)
y_positions[1], _ = strconv.Atoi(xml_data.Device.Placement.Top_right_y)
y_positions[2], _ = strconv.Atoi(xml_data.Device.Placement.Bottom_right_y)
y_positions[3], _ = strconv.Atoi(xml_data.Device.Placement.Bottom_left_y)
base_x := x_positions[0]
base_y := y_positions[0]
result := []float64{0, 0,
float64(x_positions[0] - base_x), float64(y_positions[0] - base_y),
float64(width), 0,
float64(x_positions[1] - base_x), float64(y_positions[1] - base_y),
float64(width), float64(height),
float64(x_positions[2] - base_x), float64(y_positions[2] - base_y),
0, float64(height),
float64(x_positions[3] - base_x), float64(y_positions[3] - base_y)}
mw := imagick.NewMagickWand()
defer mw.Destroy()
back_mw := imagick.NewMagickWand()
defer back_mw.Destroy()
mw.ReadImageBlob(image)
back_mw.ReadImage("src/github.com/JustinJudd/go_snappshot/public/images/backgrounds/" + image_id + ".jpg")
mw.SetImageVirtualPixelMethod(imagick.VIRTUAL_PIXEL_TRANSPARENT)
mw.DistortImage(imagick.DISTORTION_PERSPECTIVE, result, true)
sort.IntSlice.Sort(x_positions)
sort.IntSlice.Sort(y_positions)
back_mw.CompositeImage(mw, imagick.COMPOSITE_OP_OVER, x_positions[0], y_positions[0])
placed_id := strconv.Itoa(int(time.Now().UnixNano()))
back_mw.WriteImage(getGeneratedPath(placed_id))
return placed_id
}
// Text effect 1 - shadow effect using MagickShadowImage
// NOTE - if an image has a transparent background, adding a border of any colour other
// than "none" will remove all the transparency and replace it with the border's colour
func textEffect1() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
dw := imagick.NewDrawingWand()
defer dw.Destroy()
pw := imagick.NewPixelWand()
defer pw.Destroy()
pw.SetColor("none")
// Create a new transparent image
mw.NewImage(350, 100, pw)
// Set up a 72 point white font
pw.SetColor("white")
dw.SetFillColor(pw)
dw.SetFont("Verdana-Bold-Italic")
dw.SetFontSize(72)
// Add a black outline to the text
pw.SetColor("black")
dw.SetStrokeColor(pw)
// Turn antialias on - not sure this makes a difference
dw.SetTextAntialias(true)
// Now draw the text
dw.Annotation(25, 65, "Magick")
// Draw the image on to the mw
mw.DrawImage(dw)
// Trim the image down to include only the text
mw.TrimImage(0)
// equivalent to the command line +repage
mw.ResetImagePage("")
// Make a copy of the text image
cw := mw.Clone()
// Set the background colour to blue for the shadow
pw.SetColor("blue")
mw.SetImageBackgroundColor(pw)
// Opacity is a real number indicating (apparently) percentage
mw.ShadowImage(70, 4, 5, 5)
// Composite the text on top of the shadow
mw.CompositeImage(cw, imagick.COMPOSITE_OP_OVER, 5, 5)
cw.Destroy()
cw = imagick.NewMagickWand()
defer cw.Destroy()
// Create a new image the same size as the text image and put a solid colour
// as its background
pw.SetColor("rgb(125,215,255)")
cw.NewImage(mw.GetImageWidth(), mw.GetImageHeight(), pw)
// Now composite the shadowed text over the plain background
cw.CompositeImage(mw, imagick.COMPOSITE_OP_OVER, 0, 0)
// and write the result
cw.WriteImage("text_shadow.png")
}
func Thumbnail(filename string, targetWidth, targetHeight uint) {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
defer mw.Destroy()
var err error
// 画像読み込み
err = mw.ReadImage(filename)
if err != nil {
panic(err)
}
// 縦横サイズを取得
width, height := mw.GetImageWidth(), mw.GetImageHeight()
// 縦横の小さい方に合わせてリサイズしたときのサイズを取得
resizedWidth, resizedHeight := getResizedWH(width, height, targetWidth, targetHeight)
// サムネイルを作成
err = mw.ThumbnailImage(resizedWidth, resizedHeight)
if err != nil {
panic(err)
}
// 切り抜き開始位置
startX, startY := getStartPointXY(width, height, resizedWidth, resizedHeight)
// 最終的なサイズで切り抜く
err = mw.ExtentImage(targetWidth, targetHeight, startX, startY)
if err != nil {
panic(err)
}
// 画像のクオリティ
err = mw.SetImageCompressionQuality(95)
if err != nil {
panic(err)
}
// ファイルに保存
// TODO(hfunai): ファイル名にドットがあると死亡
err = mw.WriteImage(strings.Replace(filename, ".", "_thumb.", 1))
if err != nil {
panic(err)
}
}