//drawstring justified with paragraph format
public static void DrawStringJustified(System.DrawingCore.Graphics graphics, string s, System.DrawingCore.Font font, System.DrawingCore.Brush brush, System.DrawingCore.RectangleF layoutRectangle, char paragraphFormat)
{
try
{
//save the current state of the graphics handle
GraphicsState graphicsState = graphics.Save();
//obtain the font height to be used as line height
double lineHeight = (double)Math.Round(font.GetHeight(graphics), 1);
//string builder to format the text
StringBuilder text = new StringBuilder(s);
var originalFont = new System.DrawingCore.Font(font.FontFamily, font.Size, font.Style);
//adjust the text string to ease detection of carriage returns
text = text.Replace("\r\n", " <CR> ");
text = text.Replace("\r", " <CR> ");
text.Append(" <CR> ");
//ensure measure string will bring the best measures possible (antialias)
graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
//create a string format object with the generic typographic to obtain the most accurate string measurements
//strange, but the recommended for this case is to use a "cloned" stringformat
var stringFormat = (System.DrawingCore.StringFormat)System.DrawingCore.StringFormat.GenericTypographic.Clone();
//allow the correct measuring of spaces
stringFormat.FormatFlags = System.DrawingCore.StringFormatFlags.MeasureTrailingSpaces;
//create a stringformat for leftalignment
System.DrawingCore.StringFormat leftAlignHandle = new System.DrawingCore.StringFormat();
leftAlignHandle.LineAlignment = System.DrawingCore.StringAlignment.Near;
//create a stringformat for rightalignment
System.DrawingCore.StringFormat rightAlignHandle = new System.DrawingCore.StringFormat();
rightAlignHandle.LineAlignment = System.DrawingCore.StringAlignment.Far;
//measure space for the given font
var stringSize = graphics.MeasureString(" ", font, layoutRectangle.Size, stringFormat);
double spaceWidth = stringSize.Width + 1;
//measure paragraph format for the given font
double paragraphFormatWidth = 0;
if (paragraphFormat != ' ')
{
var paragraphFormatSize = graphics.MeasureString(paragraphFormat.ToString(), new System.DrawingCore.Font(font.FontFamily, font.Size, System.DrawingCore.FontStyle.Regular), layoutRectangle.Size, stringFormat);
paragraphFormatWidth = paragraphFormatSize.Width;
}
//total word count
int totalWords = Regex.Matches(text.ToString(), " ").Count;
//array of words
ArrayList words = new ArrayList();
//measure each word
int n = 0;
while (true)
{
//original word
string word = Regex.Split(text.ToString(), " ").GetValue(n).ToString();
//add to words array the word without tags
words.Add(new Word(word.Replace("<b>", "").Replace("</b>", "").Replace("<i>", "").Replace("</i>", "")));
//marque to start bolding or/and italic
if (word.ToLower().Contains("<b>") && word.ToLower().Contains("<i>"))
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Bold & System.DrawingCore.FontStyle.Italic);
}
else if (word.ToLower().Contains("<b>"))
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Bold);
}
else if (word.ToLower().Contains("<i>"))
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Italic);
}
Word currentWord = (Word)words[n];
currentWord.StartBold = word.ToLower().Contains("<b>");
currentWord.StopBold = word.ToLower().Contains("</b>");
currentWord.StartItalic = word.ToLower().Contains("<i>");
currentWord.StopItalic = word.ToLower().Contains("</i>");
//size of the word
var wordSize = graphics.MeasureString(currentWord.String, font, layoutRectangle.Size, stringFormat);
float wordWidth = wordSize.Width;
if (wordWidth > layoutRectangle.Width && currentWord.String != "<CR>")
{
int reduce = 1;
while (true)
{
int lengthChars = (int)Math.Round(currentWord.String.Length / (wordWidth / layoutRectangle.Width), 0) - reduce;
string cutWord = currentWord.String.Substring(0, lengthChars);
//the new size of the word
wordSize = graphics.MeasureString(cutWord, font, layoutRectangle.Size, stringFormat);
wordWidth = wordSize.Width;
//update the word string
((Word)words[n]).String = cutWord;
//add new word
if (wordWidth <= layoutRectangle.Width)
{
totalWords++;
words.Add(new Word("", 0,
currentWord.StartBold, currentWord.StopBold,
currentWord.StartItalic, currentWord.StopItalic));
text.Replace(currentWord.String, cutWord + " " + currentWord.String.Substring(lengthChars + 1), 0, 1);
break;
}
reduce++;
}
}
//update the word size
((Word)words[n]).Length = wordWidth;
//marque to stop bolding or/and italic
if (word.ToLower().Contains("</b>") && font.Style == System.DrawingCore.FontStyle.Italic)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Italic);
}
else if (word.ToLower().Contains("</i>") && font.Style == System.DrawingCore.FontStyle.Bold)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Bold);
}
else if (word.ToLower().Contains("</b>") || word.ToLower().Contains("</i>"))
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Regular);
}
n++;
if (n > totalWords - 1)
{
break;
}
}
//before we start drawing, its wise to restore ou graphics objecto to its original state
graphics.Restore(graphicsState);
//restore to font to the original values
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, originalFont.Style);
//start drawing word by word
int currentLine = 0;
for (int i = 0; i < totalWords; i++)
{
bool endOfSentence = false;
double wordsWidth = 0;
int wordsInLine = 0;
int j = i;
for (j = i; j < totalWords; j++)
{
if (((Word)words[j]).String == "<CR>")
{
endOfSentence = true;
break;
}
wordsWidth += ((Word)words[j]).Length + spaceWidth;
if (wordsWidth > layoutRectangle.Width && j > i)
{
wordsWidth = wordsWidth - ((Word)words[j]).Length - (spaceWidth * wordsInLine);
break;
}
wordsInLine++;
}
if (j > totalWords)
{
endOfSentence = true;
}
double widthOfBetween = 0;
if (endOfSentence)
{
widthOfBetween = spaceWidth;
}
else
{
widthOfBetween = (layoutRectangle.Width - wordsWidth) / (wordsInLine - 1);
}
double currentTop = layoutRectangle.Top + (int)(currentLine * lineHeight);
if (currentTop > (layoutRectangle.Height + layoutRectangle.Top))
{
i = totalWords;
break;
}
double currentLeft = layoutRectangle.Left;
bool lastWord = false;
for (int currentWord = 0; currentWord < wordsInLine; currentWord++)
{
bool loop = false;
if (((Word)words[i]).String == "<CR>")
{
i++;
loop = true;
}
if (!loop)
{
//last word in sentence
if (currentWord == wordsInLine && !endOfSentence)
{
lastWord = true;
}
if (wordsInLine == 1)
{
currentLeft = layoutRectangle.Left;
lastWord = false;
}
System.DrawingCore.RectangleF rectangleF;
System.DrawingCore.StringFormat stringFormatHandle;
if (lastWord)
{
rectangleF = new System.DrawingCore.RectangleF(layoutRectangle.Left, (float)currentTop, layoutRectangle.Width, (float)(currentTop + lineHeight));
stringFormatHandle = rightAlignHandle;
}
else
{
//lets zero size for word to drawstring auto-size de word
rectangleF = new System.DrawingCore.RectangleF((float)currentLeft, (float)currentTop, 0, 0);
stringFormatHandle = leftAlignHandle;
}
//start bolding and/or italic
if (((Word)words[i]).StartBold && ((Word)words[i]).StartItalic)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Bold & System.DrawingCore.FontStyle.Italic);
}
else if (((Word)words[i]).StartBold)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Bold);
}
else if (((Word)words[i]).StartItalic)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Italic);
}
//draw the word
graphics.DrawString(((Word)words[i]).String, font, brush, rectangleF, stringFormatHandle);
//stop bolding and/or italic
if (((Word)words[i]).StopBold && font.Style == System.DrawingCore.FontStyle.Italic)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Regular);
}
else if (((Word)words[i]).StopItalic && font.Style == System.DrawingCore.FontStyle.Bold)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Bold);
}
else if (((Word)words[i]).StopBold || ((Word)words[i]).StopItalic)
{
font = new System.DrawingCore.Font(originalFont.FontFamily, originalFont.Size, System.DrawingCore.FontStyle.Regular);
}
//paragraph formating
if (endOfSentence && currentWord == wordsInLine - 1 && paragraphFormat != ' ')
{
currentLeft += ((Word)words[i]).Length;
//draw until end of line
while (currentLeft + paragraphFormatWidth <= layoutRectangle.Left + layoutRectangle.Width)
{
rectangleF = new System.DrawingCore.RectangleF((float)currentLeft, (float)currentTop, 0, 0);
//draw the paragraph format
graphics.DrawString(paragraphFormat.ToString(), font, brush, rectangleF, stringFormatHandle);
currentLeft += paragraphFormatWidth;
}
}
else
{
currentLeft += ((Word)words[i]).Length + widthOfBetween;
}
//go to next word
i++;
}
}
currentLine++;
if (i >= totalWords)
{
break;
}
//compensate endfor
if (((Word)words[i]).String != "<CR>")
{
i--;
}
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
/// <summary>
///
/// </summary>
/// <param name="bytes">图片byte文件流</param>
/// <param name="waterMarks"></param>
/// <param name="filePath">图片保存物理路径</param>
/// <param name="brush">default is Brushes.Red</param>
/// <param name="fontSize">default 20</param>
public static void WaterMarks(byte[] bytes, string waterMarks, string filePath, System.DrawingCore.Brush brush = null, int fontSize = 20)
{
MemoryStream memoryStream = new MemoryStream(bytes);
using (Image image = Image.FromStream(memoryStream))
{
using (Bitmap bitmap = new Bitmap(image.Width, image.Height))
{
using (Graphics graphics = Graphics.FromImage(bitmap))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.Clear(Color.Transparent);
graphics.DrawImage(image, new Rectangle(0, 0, image.Width, image.Height), 0, 0, image.Width, image.Height, GraphicsUnit.Pixel);
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
if (brush == null)
{
brush = Brushes.Red;
}
graphics.DrawString(waterMarks, new Font("AdobeHeitiStd-Regular", fontSize, FontStyle.Bold), brush, new PointF(image.Width / 2, image.Height - image.Height / 8), stringFormat);
bitmap.Save(filePath, ImageFormat.Png);
}
}
}
}
//drawstring justified without paragraph format
public static void DrawStringJustified(System.DrawingCore.Graphics graphics, string s, System.DrawingCore.Font font, System.DrawingCore.Brush brush, System.DrawingCore.RectangleF layoutRectangle)
{
DrawStringJustified(graphics, s, font, brush, layoutRectangle, ' ');
}