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More crop for VobSub

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This commit is contained in:
niksedk 2023-10-08 19:24:29 +02:00
parent 429bdb3360
commit 3ad9da7d8d
2 changed files with 29 additions and 0 deletions
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27
src/libse/Common/NikseBitmap.cs
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@ -914,6 +914,20 @@ namespace Nikse.SubtitleEdit.Core.Common
return Height - y;
}
public int CalcBottomTransparent()
{
var y = Height - 1;
for (; y > 0; y--)
{
if (!IsHorizontalLineTransparent(y))
{
break;
}
}
return Height - y;
}
public int CalcLeftCropping(Color color)
{
var x = 0;
@ -968,6 +982,19 @@ namespace Nikse.SubtitleEdit.Core.Common
return true;
}
public bool IsHorizontalLineTransparent(int y)
{
for (var x = 0; x < Width; x++)
{
if (GetAlpha(x, y) > 1)
{
return false;
}
}
return true;
}
public void Fill(Color color)
{
var buffer = new byte[4];

2
src/ui/Forms/Ocr/VobSubOcr.cs
View File

@ -2330,9 +2330,11 @@ namespace Nikse.SubtitleEdit.Forms.Ocr
var nbmp = new NikseBitmap(bmp);
var topCropped = nbmp.CropTopTransparent(0);
top += topCropped;
var bottomCropped = nbmp.CalcBottomTransparent();
width = bmp.Width;
height = bmp.Height;
height -= topCropped;
height -= bottomCropped;
bmp.Dispose();
return;
}