115 lines
2.6 KiB
Go
115 lines
2.6 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"image/color"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"github.com/fogleman/gg"
|
||
|
|
"github.com/writeas/web-core/log"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
log.Info("Starting...")
|
||
|
|
start := time.Now()
|
||
|
|
err := run()
|
||
|
|
if err != nil {
|
||
|
|
log.Error("%s", err)
|
||
|
|
os.Exit(1)
|
||
|
|
}
|
||
|
|
log.Info("Completed in %s", time.Since(start))
|
||
|
|
}
|
||
|
|
|
||
|
|
func loadFont(dc *gg.Context, bold bool, points float64) error {
|
||
|
|
fontLoraBoldPath := filepath.Join("fonts", "Lora-Bold.ttf")
|
||
|
|
fontLoraPath := filepath.Join("fonts", "Lora-Regular.ttf")
|
||
|
|
path := fontLoraPath
|
||
|
|
if bold {
|
||
|
|
path = fontLoraBoldPath
|
||
|
|
}
|
||
|
|
|
||
|
|
err := dc.LoadFontFace(path, points)
|
||
|
|
if err != nil {
|
||
|
|
return fmt.Errorf("load bold font: %s", err)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func run() error {
|
||
|
|
w := 900
|
||
|
|
h := 900
|
||
|
|
wf := float64(w)
|
||
|
|
hf := float64(h)
|
||
|
|
dc := gg.NewContext(w, h)
|
||
|
|
dc.DrawRectangle(0, 0, wf, hf)
|
||
|
|
dc.SetRGB(1, 1, 1)
|
||
|
|
dc.Fill()
|
||
|
|
|
||
|
|
// Define margins for footer text
|
||
|
|
footerFontSize := 32.0
|
||
|
|
footerMargin := 20.0
|
||
|
|
x := footerMargin
|
||
|
|
y := footerMargin
|
||
|
|
footerMarginY := 20.0
|
||
|
|
|
||
|
|
// Content parameters
|
||
|
|
contentFontSize := 48.0
|
||
|
|
lineSpacing := 1.8
|
||
|
|
contentRightMargin := 50.0
|
||
|
|
contentTopMargin := 50.0
|
||
|
|
|
||
|
|
// Create bold instance name
|
||
|
|
err := loadFont(dc, true, footerFontSize)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
instance := "write.as"
|
||
|
|
baseTextWidth, textHeight := dc.MeasureString(instance)
|
||
|
|
|
||
|
|
// Create user path
|
||
|
|
err = loadFont(dc, false, footerFontSize)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dc.SetColor(color.Black)
|
||
|
|
|
||
|
|
userPath := "/matt"
|
||
|
|
userTextWidth, _ := dc.MeasureString(userPath)
|
||
|
|
// x = canvas halfway point - total text width halfway point
|
||
|
|
x = wf/2 - (baseTextWidth+userTextWidth)/2
|
||
|
|
y = hf - textHeight - footerMarginY
|
||
|
|
err = loadFont(dc, true, footerFontSize)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dc.DrawString(instance, x, y)
|
||
|
|
|
||
|
|
// x = original x coordinate + base text width
|
||
|
|
x += baseTextWidth
|
||
|
|
y = hf - textHeight - footerMarginY
|
||
|
|
err = loadFont(dc, false, footerFontSize)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
dc.DrawString(userPath, x, y)
|
||
|
|
|
||
|
|
// Draw the content
|
||
|
|
err = loadFont(dc, false, contentFontSize)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
s := "The rest of the travelers in our flying bus napped or stared listlessly at a shiny slab in their lap and the staring yellow orb morphed into a full circle out in the blue. As we banked to the right — a nod to its awakening — it seemed to rest in acknowledgement, hanging for a moment on the invisible horizon."
|
||
|
|
x = contentRightMargin
|
||
|
|
y = contentTopMargin
|
||
|
|
maxWidth := float64(dc.Width()) - contentRightMargin - contentRightMargin
|
||
|
|
dc.DrawStringWrapped(s, x, y, 0, 0, maxWidth, lineSpacing, gg.AlignLeft)
|
||
|
|
|
||
|
|
err = dc.SavePNG("out.png")
|
||
|
|
if err != nil {
|
||
|
|
return fmt.Errorf("save png: %s", err)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|