private void DrawWatermark(RenderParameters parameters, Graphics graphics, Image image)
{
using (var watermark = Image.FromFile(parameters.FullWatermarkImageFilePath))
{
var padding = 2;
var width = parameters.WatermarkImageWidth;
var height = parameters.WatermarkImageHeight;
var sourceRectangle = new Rectangle(0, 0, watermark.Width, watermark.Height);
var destinationRectangle = new Rectangle(image.Width - width - padding, image.Height - height - padding, width, height);
graphics.DrawImage(watermark, destinationRectangle, sourceRectangle, GraphicsUnit.Pixel);
var font = new Font(parameters.WatermarkFont, parameters.WatermarkFontSize);
var textSize = graphics.MeasureString(parameters.WatermarkText, font);
var bounds = new Rectangle(image.Width - width - (int)Math.Ceiling(textSize.Width), image.Height - (int)Math.Ceiling(textSize.Height), image.Width, (int)Math.Ceiling(textSize.Height));
graphics.CompositingMode = CompositingMode.SourceOver;
var stroke = new SolidBrush(Color.FromArgb(150, parameters.WatermarkStroke));
var fill = new SolidBrush(Color.FromArgb(150, parameters.WatermarkFill));
DrawText(graphics, parameters.WatermarkText, font, parameters.WatermarkFontStyle, parameters.WatermarkFontSize, stroke, parameters.WatermarkStrokeWidth, fill, StringFormat.GenericTypographic, bounds);
graphics.CompositingMode = CompositingMode.SourceCopy;
}
}
private void DrawText(RenderParameters parameters, Graphics graphics, Image image, LineParameters line, Rectangle bounds, StringFormat stringFormat)
{
var done = false;
var fontSize = line.FontSize;
var fontFamily = FindFont(parameters, line.Font);
while (!done)
{
var font = new Font(fontFamily, fontSize, FontStyle.Regular);
var size = graphics.MeasureString(line.Text, font, bounds.Width);
if (size.Height > bounds.Size.Height && fontSize > 10)
{
fontSize -= 2;
continue;
}
var stroke = new SolidBrush(line.Stroke);
var fill = new SolidBrush(line.Fill);
DrawText(graphics, line.Text, font, line.FontStyle, fontSize, stroke, line.StrokeWidth, fill, stringFormat, bounds);
if (parameters.DebugMode)
{
DrawBoxes(graphics, image.Width, image.Height, bounds);
}
done = true;
}
}
private void DrawText(RenderParameters parameters, Graphics graphics, Image image, LineParameters line, Rectangle bounds, StringFormat stringFormat)
{
var done = false;
var fontSize = line.FontSize;
var fontFamily = FindFont(parameters, line.Font);
while (!done)
{
var font = new Font(fontFamily, fontSize, FontStyle.Regular);
var size = graphics.MeasureString(line.Text, font, bounds.Width);
if (size.Height > bounds.Size.Height && fontSize > 10)
{
fontSize -= 2;
continue;
}
var stroke = new SolidBrush(line.Stroke);
var fill = new SolidBrush(line.Fill);
DrawText(graphics, line.Text, font, line.FontStyle, fontSize, stroke, line.StrokeWidth, fill, stringFormat, bounds);
if (parameters.DebugMode)
{
DrawBoxes(graphics, image.Width, image.Height, bounds);
}
done = true;
}
}
public byte[] Render(RenderParameters parameters)
{
using (var image = Image.FromFile(parameters.FullImagePath))
using (var graphics = Graphics.FromImage(image))
{
DrawWatermark(parameters, graphics, image);
foreach (var line in parameters.Lines)
{
var maxHeightPercent = line.HeightPercent;
var maxHeight = (int)Math.Ceiling(image.Height * (maxHeightPercent / 100));
var bounds = line.Bounds ?? new Rectangle(0, 0, image.Width, maxHeight);
var stringFormat = new StringFormat(StringFormat.GenericTypographic);
stringFormat.Alignment = line.TextAlignment;
stringFormat.LineAlignment = StringAlignment.Near;
if (line.HugBottom)
{
stringFormat.LineAlignment = StringAlignment.Far;
bounds.Y = image.Height - bounds.Height - 1;
}
DrawText(parameters, graphics, image, line, bounds, stringFormat);
}
using (var memoryStream = new MemoryStream())
{
image.Save(memoryStream, image.RawFormat);
return(memoryStream.ToArray());
}
}
}
private void DrawWatermark(RenderParameters parameters, Graphics graphics, Image image)
{
using (var watermark = Image.FromFile(parameters.FullWatermarkImageFilePath))
{
var padding = 2;
var width = parameters.WatermarkImageWidth;
var height = parameters.WatermarkImageHeight;
var sourceRectangle = new Rectangle(0, 0, watermark.Width, watermark.Height);
var destinationRectangle = new Rectangle(image.Width - width - padding, image.Height - height - padding, width, height);
graphics.DrawImage(watermark, destinationRectangle, sourceRectangle, GraphicsUnit.Pixel);
var font = new Font(parameters.WatermarkFont, parameters.WatermarkFontSize);
var textSize = graphics.MeasureString(parameters.WatermarkText, font);
var bounds = new Rectangle(image.Width - width - (int)Math.Ceiling(textSize.Width), image.Height - (int)Math.Ceiling(textSize.Height), image.Width, (int)Math.Ceiling(textSize.Height));
graphics.CompositingMode = CompositingMode.SourceOver;
var stroke = new SolidBrush(Color.FromArgb(150, parameters.WatermarkStroke));
var fill = new SolidBrush(Color.FromArgb(150, parameters.WatermarkFill));
DrawText(graphics, parameters.WatermarkText, font, parameters.WatermarkFontStyle, parameters.WatermarkFontSize, stroke, parameters.WatermarkStrokeWidth, fill, StringFormat.GenericTypographic, bounds);
graphics.CompositingMode = CompositingMode.SourceCopy;
}
}
public byte[] Render(RenderParameters parameters)
{
using (var image = Image.FromFile(parameters.FullImagePath))
using (var graphics = Graphics.FromImage(image))
{
DrawWatermark(parameters, graphics, image);
foreach (var line in parameters.Lines)
{
var maxHeightPercent = line.HeightPercent;
var maxHeight = (int)Math.Ceiling(image.Height * (maxHeightPercent / 100));
var bounds = line.Bounds ?? new Rectangle(0, 0, image.Width, maxHeight);
var stringFormat = new StringFormat(StringFormat.GenericTypographic);
stringFormat.Alignment = line.TextAlignment;
stringFormat.LineAlignment = StringAlignment.Near;
if (line.HugBottom)
{
stringFormat.LineAlignment = StringAlignment.Far;
bounds.Y = image.Height - bounds.Height - 1;
}
DrawText(parameters, graphics, image, line, bounds, stringFormat);
}
using (var memoryStream = new MemoryStream())
{
image.Save(memoryStream, image.RawFormat);
return memoryStream.ToArray();
}
}
}
private static FontFamily FindFont(RenderParameters parameters, string font)
{
var fontFamily = parameters.PrivateFonts.Families.FirstOrDefault(f => f.Name == font)
?? FontFamily.Families.FirstOrDefault(f => f.Name == font);
if (fontFamily == null)
{
throw new ArgumentException(string.Format("Font {0} could not be found", font));
}
return(fontFamily);
}
private static FontFamily FindFont(RenderParameters parameters, string font)
{
var fontFamily = parameters.PrivateFonts.Families.FirstOrDefault(f => f.Name == font)
?? FontFamily.Families.FirstOrDefault(f => f.Name == font);
if (fontFamily == null)
{
throw new ArgumentException(string.Format("Font {0} could not be found", font));
}
return fontFamily;
}
public ActionResult Make()
{
var url = Request.ServerVariables["HTTP_URL"];
var memeRequest = MemeRequest.FromUrl(url, Server);
var meme = MemeUtilities.FindMeme(GlobalMemeConfiguration.Memes, memeRequest.Name);
if (meme == null)
{
// TODO: update this flow to return a proper HTTP 404 code, too
meme = GlobalMemeConfiguration.NotFoundMeme;
memeRequest.Lines = new List<string> { "404", "Y U NO USE VALID MEME NAME?" };
}
// if we want to do this earlier in the process consider
// if we still need to worry about png vs. jpg. The browser
// probably doesn't care, but it might be weird if the extension
// doesn't match the mimetype
var hasExtension = UrlExtension.IsMatch(url);
if (!hasExtension)
{
return Redirect(url + Path.GetExtension(meme.ImageFileName));
}
var renderParameters = new RenderParameters
{
FullImagePath = HttpContext.Server.MapPath(meme.ImagePath),
DebugMode = memeRequest.IsDebugMode,
FullWatermarkImageFilePath = HttpContext.Server.MapPath("~/Content/UpBoatWatermark.png"),
WatermarkImageHeight = 25,
WatermarkImageWidth = 25,
WatermarkText = "upboat.me",
WatermarkFont = "Arial",
WatermarkFontStyle = FontStyle.Regular,
WatermarkFontSize = 9,
WatermarkStroke = Color.Black,
WatermarkFill = Color.White,
WatermarkStrokeWidth = 1,
PrivateFonts = MemeConfig.PrivateFontCollection,
Lines = meme.Lines.Select(l => new LineParameters
{
Bounds = l.Bounds,
DoForceTextToAllCaps = l.DoForceTextToAllCaps,
Fill = l.Fill,
Font = l.Font,
FontSize = l.FontSize,
FontStyle = l.FontStyle,
HeightPercent = l.HeightPercent,
Stroke = l.Stroke,
StrokeWidth = l.StrokeWidth,
TextAlignment = l.TextAlignment,
HugBottom = l.HugBottom
}).ToList()
};
for(var x = 0; x < renderParameters.Lines.Count; x++)
{
if (x < memeRequest.Lines.Count)
{
renderParameters.Lines[x].Text = memeRequest.Lines[x].SanitizeMemeText(renderParameters.Lines[x].DoForceTextToAllCaps);
}
}
var renderer = new Renderer();
var bytes = renderer.Render(renderParameters);
Analytics.TrackMeme(HttpContext, memeRequest.Name);
return new FileContentResult(bytes, meme.ImageType);
}
