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it's working! even on twitter.

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This commit is contained in:
fiatjaf
2023-05-10 23:05:31 -03:00
parent 48ed02dbd0
commit 00b824f98e
6 changed files with 52 additions and 8 deletions
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18
text.go
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@@ -27,10 +27,18 @@ func normalizeText(t string) []string {
return lines
}
func drawImage(lines []string) (image.Image, error) {
func drawImage(lines []string, style string) (image.Image, error) {
width, height, paddingLeft := 700, 525, 0
switch style {
case "twitter":
height = 366
case "telegram":
paddingLeft = 15
}
// get the physical image ready with colors/size
fg, bg := image.Black, image.White
rgba := image.NewRGBA(image.Rect(0, 0, 700, 525))
rgba := image.NewRGBA(image.Rect(0, 0, width, height))
// draw the empty image
draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src)
@@ -51,7 +59,7 @@ func drawImage(lines []string) (image.Image, error) {
// draw each line separately
var count float64 = 1
for _, line := range lines {
if err := drawText(c, line, count); err != nil {
if err := drawText(c, line, count, paddingLeft); err != nil {
return nil, err
}
count++
@@ -60,12 +68,12 @@ func drawImage(lines []string) (image.Image, error) {
return rgba, nil
}
func drawText(c *freetype.Context, text string, line float64) error {
func drawText(c *freetype.Context, text string, line float64, paddingLeft int) error {
// We need an offset because we need to know where exactly on the
// image to place the text. The `line` is how much of an offset
// that we need to provide (which line the text is going on).
offsetY := 10 + int(c.PointToFix32(FONT_SIZE*line)>>8)
_, err := c.DrawString(text, freetype.Pt(10, offsetY))
_, err := c.DrawString(text, freetype.Pt(10+paddingLeft, offsetY))
return err
}