public byte[] GetFinalCoverBytes(Published publ)
{
byte[] finalCover;
using (var ms = new MemoryStream()) {
publ.CoverImage.GetFinalCover(publ).Save(ms, ImageFormat.Png);
ms.Position = 0;
finalCover = ms.ToArray();
}
return(finalCover);
}
/// <summary>
/// Create the final cover on the fly
/// </summary>
/// <returns></returns>
public Image GetFinalCover(Published publ)
{
var fontFamily = FontFamily ?? "Arial";
var fColor = ForeColor == null ? Color.White : ColorTranslator.FromHtml(ForeColor);
var bColor = BackColor == null ? Color.Teal : ColorTranslator.FromHtml(BackColor);
// A5 300 dpi
var w = 1748F;
var h = 2482F;
var font = new Font(fontFamily, BaseFontSize);
var font1 = new Font(fontFamily, BaseFontSize / 2);
var font2 = new Font(fontFamily, BaseFontSize / 3 * 2);
Image img = new Bitmap((int)w, (int)h, PixelFormat.Format24bppRgb);
using (var g = Graphics.FromImage(img)) {
g.SmoothingMode = SmoothingMode.AntiAlias;
byte[] fileCover = null;
if (CoverImage == null)
{
if (UseCoverBackgroundTemplate)
{
var template = HttpContext.Current.Server.MapPath(String.Format("~/App_Data/Templates/cover/{0}", CoverBackgroundTemplate));
fileCover = File.ReadAllBytes(template);
}
}
else
{
fileCover = CoverImage;
}
if (fileCover == null)
{
using (var b = new SolidBrush(bColor)) {
g.FillRectangle(b, 0, 0, w, h); // use background color
}
}
else
{
using (var b = new SolidBrush(Color.White)) {
g.FillRectangle(b, 0, 0, w, h); // all white
}
using (var templateImageStream = new MemoryStream(fileCover, 0, fileCover.Length)) {
var templateImage = Image.FromStream(templateImageStream);
g.DrawImage(templateImage, 0, 0, templateImage.Width, templateImage.Height);
}
}
Action <KeyValuePair <string, float>, float, float, Font> drawFunc = (d, sh, dh, ft) => {
var xz = 200; // to center use this: w / 2 - d.Value / 2;
var yz = sh; // to arrange use this: h / 3 - sh / 2 + dh;
using (var b = new SolidBrush(fColor)) {
g.DrawString(d.Key, ft, b, new PointF(xz, yz));
}
};
var sf = g.MeasureString(publ.Title, font);
// title does not fit, break in two lines
var titleWords = publ.Title.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
var measures = titleWords.ToDictionary(t => t, t => g.MeasureString(t + " ", font).Width);
if (measures.Sum(t => t.Value) > w)
{
// does not fit in; strategy: take first ones until width exceeded, place, treat remainder
var startWidth = 0F;
var firstLine = measures.TakeWhile(t => {
startWidth += t.Value;
return(startWidth < w);
}).ToDictionary(t => t.Key, t => t.Value);
var lastLine = measures.Except(firstLine).ToList();
drawFunc(new KeyValuePair <string, float>(
String.Join(" ", firstLine.Select(t => t.Key).ToArray()), firstLine.Sum(t => t.Value)),
sf.Height, 0F, font);
drawFunc(new KeyValuePair <string, float>(
String.Join(" ", lastLine.Select(t => t.Key).ToArray()), lastLine.Sum(t => t.Value)),
sf.Height, sf.Height + 10, font); // 10 is an additional gap between lines
}
else
{
drawFunc(new KeyValuePair <string, float>(publ.Title, sf.Width), 600F, 0F, font);
}
var titleHeight = sf.Height;
if (!String.IsNullOrEmpty(publ.SubTitle))
{
sf = g.MeasureString(publ.SubTitle, font2);
drawFunc(new KeyValuePair <string, float>(publ.SubTitle, sf.Width), 700F + titleHeight, 0F, font2);
}
var publAuthors = "";
if (publ.Authors.Any())
{
// get authors only
publAuthors = String.Join(", ", publ.Authors
.Select(u => String.Format("{0} {1}", u.Profile.FirstName, u.Profile.LastName)).ToArray());
}
if (!String.IsNullOrEmpty(publAuthors))
{
sf = g.MeasureString(publAuthors, font1);
drawFunc(new KeyValuePair <string, float>(publAuthors, sf.Width), 1100F, 0F, font1);
}
}
return(img);
}
