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add support for background color padding during image resizing #3177

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merged 1 commit into from
Aug 23, 2023
Merged

add support for background color padding during image resizing #3177

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48 changes: 31 additions & 17 deletions Oqtane.Server/Controllers/FileController.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -679,29 +679,43 @@ private string CreateImage(string filepath, int width, int height, string mode,
Enum.TryParse(mode, true, out ResizeMode resizemode);
Enum.TryParse(position, true, out AnchorPositionMode anchorpositionmode);

image.Mutate(x => x
.AutoOrient() // auto orient the image
.Rotate(angle)
.Resize(new ResizeOptions
{
Mode = resizemode,
Position = anchorpositionmode,
Size = new Size(width, height)
}));
PngEncoder encoder;

if (background != "transparent")
{
image.Mutate(x => x
.BackgroundColor(Color.ParseHex("#" + background)));
.AutoOrient() // auto orient the image
.Rotate(angle)
.Resize(new ResizeOptions
{
Mode = resizemode,
Position = anchorpositionmode,
Size = new Size(width, height),
PadColor = Color.ParseHex("#" + background)
}));

encoder = new PngEncoder();
}

PngEncoder encoder = new PngEncoder
else
{
ColorType = PngColorType.RgbWithAlpha,
TransparentColorMode = PngTransparentColorMode.Preserve,
BitDepth = PngBitDepth.Bit8,
CompressionLevel = PngCompressionLevel.BestSpeed
};
image.Mutate(x => x
.AutoOrient() // auto orient the image
.Rotate(angle)
.Resize(new ResizeOptions
{
Mode = resizemode,
Position = anchorpositionmode,
Size = new Size(width, height)
}));

encoder = new PngEncoder
{
ColorType = PngColorType.RgbWithAlpha,
TransparentColorMode = PngTransparentColorMode.Preserve,
BitDepth = PngBitDepth.Bit8,
CompressionLevel = PngCompressionLevel.BestSpeed
};
}

image.Save(imagepath, encoder);
}
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