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Merge branch 'dynamic-font-size-stuff'

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This commit is contained in:
Daniele Tonon
2024-01-05 12:52:22 +01:00
parent eb8c9c393d 33d02097a1
commit b52c514653
1 changed files with 19 additions and 9 deletions
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28
render_image.go
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@@ -95,6 +95,7 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
height := 525
paddingLeft := 25
gradientRectHeight := 140
barHeight := 70
switch style {
case StyleTelegram:
paddingLeft += 10
@@ -110,15 +111,21 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
// main content text
addedSize := 0
if np := len(paragraphs); np < 4 {
zoom := 1.0
if np := len(paragraphs); np < 6 {
nchars := 0
blankLines := 0
for _, par := range paragraphs {
nchars += len([]rune(par))
if par == "" {
blankLines++
}
}
largeness := math.Pow(float64(nchars), 0.6) + math.Pow(float64(np-1), 0.8)
addedSize = int(240.0 / largeness)
largeness := math.Pow(float64(nchars), 0.60) + math.Pow(float64(np-blankLines), 1) + math.Pow(float64(blankLines), 0.7)
zoom = float64(math.Pow(float64(height)/366.0-(float64(blankLines+1)/10), 1.2))
addedSize = int(200.0 / largeness * zoom)
}
textImg := drawText(paragraphs, fontSize+addedSize, width-paddingLeft*2, height-20)
textImg, overflowingText := drawText(paragraphs, int(float64(fontSize+addedSize)), width-paddingLeft*2, height-20-barHeight)
img.DrawImage(textImg, paddingLeft, 20)
// font for writing the date
@@ -131,13 +138,12 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
}))
// black bar at the bottom
barHeight := 70
img.SetColor(BAR_BACKGROUND)
img.DrawRectangle(0, float64(height-barHeight), float64(width), float64(barHeight))
img.Fill()
// a rectangle at the bottom with a gradient from black to transparent
if len(strings.Join(paragraphs, "\n")) > 141 {
if overflowingText {
gradientRectY := height - barHeight - gradientRectHeight
for y := 0; y < gradientRectHeight; y++ {
alpha := uint8(255 * (math.Pow(float64(y)/float64(gradientRectHeight), 2)))
@@ -160,7 +166,7 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
authorTextY := height - barHeight + 15
authorMaxWidth := width/2.0 - paddingLeft*2
img.SetColor(color.White)
textImg = drawText([]string{metadata.ShortName()}, fontSize, width, barHeight)
textImg, _ = drawText([]string{metadata.ShortName()}, fontSize, width, barHeight)
img.DrawImage(textImg, authorTextX, authorTextY)
// a gradient to cover too long names
@@ -193,7 +199,7 @@ func drawImage(paragraphs []string, style Style, metadata sdk.ProfileMetadata, d
return img.Image(), nil
}
func drawText(paragraphs []string, fontSize int, width, height int) image.Image {
func drawText(paragraphs []string, fontSize int, width, height int) (image.Image, bool) {
img := image.NewNRGBA(image.Rect(0, 0, width, height))
lineNumber := 1
@@ -226,10 +232,14 @@ func drawText(paragraphs []string, fontSize int, width, height int) image.Image
fontSize*lineNumber*12/10,
)
totalCharsWritten += charsWritten
if fontSize*lineNumber*12/10 > height {
return img, true
}
lineNumber++
}
}
}
return img
return img, false
}