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Show cut gradient at the text-image bottom only if necessary

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This commit is contained in:
Daniele Tonon
2023-12-28 23:00:22 +01:00
parent 89ed30c1ec
commit f748b99eb1
1 changed files with 9 additions and 7 deletions
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16
render_image.go
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@@ -86,6 +86,7 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
height := 525 height := 525
paddingLeft := 25 paddingLeft := 25
barExtraPadding := 0 barExtraPadding := 0
gradientRectHeight := 140
switch style { switch style {
case StyleTelegram: case StyleTelegram:
paddingLeft += 10 paddingLeft += 10
@@ -120,13 +121,14 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
img.Fill() img.Fill()
// a rectangle at the bottom with a gradient from black to transparent // a rectangle at the bottom with a gradient from black to transparent
gradientRectHeight := 140 if len(strings.Join(paragraphs, "\n")) > 141 {
gradientRectY := height - barHeight - gradientRectHeight gradientRectY := height - barHeight - gradientRectHeight
for y := 0; y < gradientRectHeight; y++ { for y := 0; y < gradientRectHeight; y++ {
alpha := uint8(255 * (math.Pow(float64(y)/float64(gradientRectHeight), 2))) alpha := uint8(255 * (math.Pow(float64(y)/float64(gradientRectHeight), 2)))
img.SetRGBA255(int(BACKGROUND.R), int(BACKGROUND.G), int(BACKGROUND.B), int(alpha)) img.SetRGBA255(int(BACKGROUND.R), int(BACKGROUND.G), int(BACKGROUND.B), int(alpha))
img.DrawRectangle(0, float64(gradientRectY+y), float64(width), 1) img.DrawRectangle(0, float64(gradientRectY+y), float64(width), 1)
img.Fill() img.Fill()
}
} }
// draw author's name // draw author's name