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修改水印位置为底部中央

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xiaji
2026-03-02 22:24:00 +08:00
parent a7c6e6b909
commit d2ec0c9b01
1 changed files with 19 additions and 9 deletions
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28
app/src/main/java/com/inspection/camera/util/ImageProcessor.kt
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@@ -99,41 +99,51 @@ object ImageProcessor {
locationText: String, locationText: String,
style: WatermarkStyle style: WatermarkStyle
): Bitmap { ): Bitmap {
android.util.Log.d("ImageProcessor", "addWatermark called, timeText=$timeText, locationText=$locationText")
val result = sourceBitmap.copy(Bitmap.Config.ARGB_8888, true) val result = sourceBitmap.copy(Bitmap.Config.ARGB_8888, true)
val canvas = Canvas(result) val canvas = Canvas(result)
// 使用固定的字体大小，基于图片宽度比例
val baseFontSize = result.width / 40f // 字体大小为图片宽度的1/40
val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply { val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
textSize = style.fontSize * result.density textSize = baseFontSize
color = style.textColor.toArgb() color = style.textColor.toArgb()
typeface = Typeface.DEFAULT_BOLD typeface = Typeface.DEFAULT_BOLD
textAlign = Paint.Align.CENTER
} }
val watermarkText = "$timeText $locationText" val watermarkText = "$timeText $locationText"
val textWidth = paint.measureText(watermarkText) val textWidth = paint.measureText(watermarkText)
val textHeight = paint.fontMetrics.let { it.descent - it.ascent } val textHeight = paint.fontMetrics.let { it.descent - it.ascent }
// 计算位置（左下角） android.util.Log.d("ImageProcessor", "Watermark: width=$textWidth, height=$textHeight, text=$watermarkText")
val padding = 20f * result.density
val x = padding // 计算位置（底部中央）
val padding = result.width / 30f // 边距为图片宽度的1/30
val x = result.width / 2f
val y = result.height - padding val y = result.height - padding
// 绘制背景 // 绘制背景
// 通过ARGB判断来决定是否绘制背景，避免混用 Android Color 与 Compose Color 的类型问题
val bgColorInt = style.backgroundColor.toArgb() val bgColorInt = style.backgroundColor.toArgb()
android.util.Log.d("ImageProcessor", "Background color int: $bgColorInt")
if (bgColorInt != 0) { if (bgColorInt != 0) {
val bgPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply { val bgPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
color = bgColorInt color = bgColorInt
} }
val bgRect = RectF( val bgRect = RectF(
x - 10, x - textWidth / 2 - padding / 2,
y - textHeight - 10, y - textHeight - padding / 2,
x + textWidth + 10, x + textWidth / 2 + padding / 2,
y + 10 y + padding / 2
) )
canvas.drawRoundRect(bgRect, 8f, 8f, bgPaint) canvas.drawRoundRect(bgRect, 8f, 8f, bgPaint)
android.util.Log.d("ImageProcessor", "Background drawn at x=$x, y=$y")
} }
// 绘制文字 // 绘制文字
canvas.drawText(watermarkText, x, y, paint) canvas.drawText(watermarkText, x, y, paint)
android.util.Log.d("ImageProcessor", "Text drawn at x=$x, y=$y")
return result return result
} }