62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
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// PresentationApp project imagick.go
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package main
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import (
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"image"
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"io/ioutil"
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"path/filepath"
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"strings"
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"github.com/disintegration/imaging"
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"github.com/flopp/go-findfont"
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"github.com/fogleman/gg"
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)
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/*resizeImage() src fullsize image
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newWidth, newHeight = size to be resized to
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keepSpecSize = return image with exactly the size specified or just the size of the resized image
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center = center the image
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*/
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func resizeImage(src image.Image, newWidth, newHeight int, keepSpecSize, center bool) (dst image.Image) {
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imaging.Fit(src, newWidth, newHeight, imaging.Lanczos)
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if keepSpecSize {
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//blank image
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dst = image.NewNRGBA(image.Rect(0, 0, newWidth, newHeight))
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if center {
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dst = imaging.OverlayCenter(dst, src, 1)
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} else {
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dst = imaging.Overlay(dst, src, image.Pt(0, 0), 1)
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}
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}
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return dst
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}
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// adding text to image copied from example
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func (cl *Cell) imgtext(width, height int) image.Image {
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ctx := gg.NewContextForImage(cl.image.resized)
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ctx.SetColor(cl.Font.color)
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if (cl.Font.name != "") || (cl.Font.name != "none") {
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data, err := ioutil.ReadFile(cl.Font.name)
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if err != nil {
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return image.Rectangle{}
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}
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if err := ctx.LoadFontData(data, cl.Font.size); err != nil {
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panic(err)
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}
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}
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ctx.DrawStringWrapped(cl.text, 0, 0, 0, 0, float64(width), 1, gg.AlignCenter)
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return ctx.Image()
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}
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func findFonts() {
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paths := findfont.List()
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for i, v := range paths {
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_, paths[i] = filepath.Split(v)
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}
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QML.FontList = strings.Join(paths, "\n")
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}
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