4
所以我用下面的代碼,以利用現有的圖像,從輸入格式的文本,然後從輸入表單中的文本放置到現有的圖像,並將其保存爲新圖像:DrawText在DrawingContext中的角度?
using (FileStream output = new FileStream(match_outputFile, FileMode.Create))
{
BitmapImage bitmap = new BitmapImage(new Uri(match_sourceFile, UriKind.Relative));
DrawingVisual visual = new DrawingVisual();
using (DrawingContext image = visual.RenderOpen())
{
image.DrawImage(bitmap, new Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight));
buildText(image, "text1", this.text1.Text);
buildText(image, "text2", this.text2.Text);
buildText(image, "text3", this.text3.Text);
}
RenderTargetBitmap target = new RenderTargetBitmap(bitmap.PixelWidth, bitmap.PixelHeight, bitmap.DpiX, bitmap.DpiY, PixelFormats.Default);
target.Render(visual);
BitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(target));
encoder.Save(output);
}
由於你可以看到,它調用下面的函數來繪製文本:
private void buildText(DrawingContext image, string settings, string input)
{
string[] setting = (Properties.Settings.Default[settings].ToString()).Split(',');
FormattedText text = new FormattedText(
input,
System.Globalization.CultureInfo.InvariantCulture,
FlowDirection.LeftToRight,
new Typeface(new FontFamily(setting[0]), FontStyles.Normal, FontWeights.Bold, FontStretches.Normal),
Convert.ToDouble(setting[5]),
(Brush) new BrushConverter().ConvertFromString(setting[4])
);
text.MaxTextWidth = Convert.ToDouble(setting[8]);
text.MaxTextHeight = Convert.ToDouble(setting[9]);
Point position = new Point(Convert.ToDouble(setting[7]), Convert.ToDouble(setting[6]));
switch (setting[2])
{
case "center": position.X += (Convert.ToDouble(setting[8]) - text.Width)/2; break;
case "right": position.X += Convert.ToDouble(setting[8]) - text.Width; break;
}
switch (setting[3])
{
case "middle": position.Y += (Convert.ToDouble(setting[9]) - text.Height)/2; break;
case "bottom": position.Y += Convert.ToDouble(setting[9]) - text.Height; break;
}
image.DrawText(text, position);
}
現在我需要的是簡單的......我需要從中心位置的角度繪製文本2(且僅文本2)。中心位置是簡單的,那就是:
centerX = (setting[8] - setting[7])/2;
centerY = (setting[9] - setting[6])/2;
所以,如果我想畫這樣的文字,在-30度角什麼的中心位置旋轉?記住我只想旋轉文本2,而不是其他文本,而不是原始圖像源。
工作完美...謝謝。 –