Question

我正在寻找一些关于我在位图上写下然后将其上传到azure blob时出现的奇怪文本的解释。

有时当我创建一个imagem时，它会附带这些奇怪的文本，其中应该有重音符号。但是我马上重新创建它并且它有效......

这是错误的图像：https://www.dropbox.com/s/8an62ygys5nnwow/uploaded-image-636488352376069747.png?dl=0

这是正确的图像： https://www.dropbox.com/s/q3sdsqo3d05skz8/uploaded-image-636493880034621618.png?dl=0

我将图片网址转换为位图：

var request = System.Net.WebRequest.Create(url);
var response = request.GetResponse();

using (var responseStream = response.GetResponseStream())
{
    var bitmap = new Bitmap(responseStream);

    return bitmap;
}

然后我在上面写上文字：

private void AddText(System.Drawing.Image image, string text, int x, int y, int width, int height, int fontSize, Color fontColor, Color borderColor, FontFamily fontFamily, FontStyle fontStyle, StringAlignment horizontalAligment, StringAlignment verticalAligment, bool autoFit, int shadowOffsetX, int shadowOffsetY, Color shadowColor, int? maxHeight, out float finalHeight, out float finalWidth)
    {
        var graphics = Graphics.FromImage(image);

        graphics.SmoothingMode = SmoothingMode.AntiAlias;
        graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
        graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;

        var rect = new Rectangle(x, y, width, height);

        StringFormat stringFormat = new StringFormat
        {
            Alignment = horizontalAligment,
            LineAlignment = verticalAligment
        };

        var font = new System.Drawing.Font(fontFamily, graphics.DpiY * fontSize / 72, fontStyle);

        if (autoFit)
        {
            font = FindFont(graphics, text, rect.Size, font);
        }

        var hasShadow = shadowOffsetX > 0 && shadowOffsetY > 0;
        var hasMaxHeight = maxHeight != null && maxHeight.Value > 0;

        if (hasShadow)
        {
            var shadowGraphicsPath = new GraphicsPath();
            var shadowRect = new Rectangle(x + shadowOffsetX, y + shadowOffsetY, width, height);
            shadowGraphicsPath.AddString(text, fontFamily, (int)fontStyle, font.Size, shadowRect, stringFormat);

            if (hasMaxHeight)
            {
                shadowGraphicsPath = GetTextWithMaxHeight(text, fontFamily, fontStyle, shadowRect, stringFormat, shadowGraphicsPath, font, maxHeight.Value, out float newFontSize);

                font = new System.Drawing.Font(font.FontFamily, newFontSize);
            }

            graphics.FillPath(new SolidBrush(shadowColor), shadowGraphicsPath);
            graphics.Flush();
            shadowGraphicsPath.Dispose();
        }

        var graphicsPath = new GraphicsPath();

        graphicsPath.AddString(text, fontFamily, (int)fontStyle, font.Size, rect, stringFormat);

        if (hasMaxHeight && !hasShadow)
        {
            graphicsPath = GetTextWithMaxHeight(text, fontFamily, fontStyle, rect, stringFormat, graphicsPath, font, maxHeight.Value, out float newFontSize);
        }

        graphics.DrawPath(new Pen(borderColor), graphicsPath);
        graphics.FillPath(new SolidBrush(fontColor), graphicsPath);

        finalHeight = graphicsPath.GetBounds().Height;
        finalWidth = graphicsPath.GetBounds().Width;

        graphics.Flush();
        graphicsPath.Dispose();
    }

然后我上传到azure blob

var container = _blobClient.GetContainerReference(_imageConfiguration.BlobContainer);

        var blockBlob = container.GetBlockBlobReference($"uploaded-image-{DateTime.Now.ToUniversalTime().Ticks}.png");

        using (var imageStream = ConvertToStream(image, ImageFormat.Png))
        {
            blockBlob.UploadFromStream(imageStream);

            var uri = blockBlob.Uri;

            return uri;
        }

有人可以帮我找一个解释吗？

先谢谢

C＃ - 在位图上书写时的Sporadical奇怪文本

0 个答案: