private void EndLine(LineData currentLine, StringBuilder currentLineText)
{
currentLine.Text = currentLineText.ToString().Trim();
if (!string.IsNullOrWhiteSpace(currentLine.Text))
{
currentLine.TextSize = PInvoked.MeasureString(graphics, currentLine.Text, font,
settings.LetterSpacing);
Lines.Add(currentLine);
}
}
public Bitmap Draw(IEnumerable <LineData> lines)
{
foreach (var line in lines)
{
//create bitmap for line
using (var lineImage = new Bitmap(line.TextSize.Width, line.TextSize.Height))
{
var lineGraphics = Graphics.FromImage(lineImage);
if (settings.TextAlign != Constants.TextAlignmentOptions.Justify)
{
PInvoked.TextOut(lineGraphics, line.Text, 0, 0, font, settings.LetterSpacing);
}
else
{
Justify(line, lineGraphics);
}
//draw line bitmap to image
graphics.DrawImage(lineImage,
new Rectangle(
line.LineBounds.Location,
lineImage.Size
), /* destination rect */
0, 0, /* source coordinates */
lineImage.Width,
lineImage.Height,
GraphicsUnit.Pixel,
imageAttributes
);
#if DEBUG
//draw rectangles
graphics.DrawRectangle(Pens.White, line.LineBounds);
graphics.DrawLine(Pens.Gray,
line.LineBounds.X,
line.LineBounds.Y + line.TextSize.Height / 2,
line.LineBounds.X + line.TextSize.Width,
line.LineBounds.Y + line.TextSize.Height / 2
);
#endif
lineGraphics.Dispose();
}
}
//create selection-sized bitmap
var resultImage = new Bitmap(selectionBounds.Width, selectionBounds.Height);
var resultGraphics = Graphics.FromImage(resultImage);
resultGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
resultGraphics.DrawImage(image, 0, 0, selectionBounds.Width, selectionBounds.Height);
return(resultImage);
}
public void SetText()
{
IEnumerable <string> words = settings.Text.Replace(Environment.NewLine, Constants.Space + Environment.NewLine + Constants.Space).Split(' ');
StringBuilder currentLineText = new StringBuilder();
int y = 0;
LineData currentLine = StartNewLine(ref y);
//until all words are placed or y is outside scaledBounds
foreach (string word in words)
{
if (y > scaledBounds.Bottom + lineIncrement)
{
break;
}
if (word.Equals(Environment.NewLine))
{
EndLine(currentLine, currentLineText);
//start new line
currentLineText.Clear();
currentLine = StartNewLine(ref y);
continue;
}
Size textSize = PInvoked.MeasureString(graphics, (currentLineText + word).Trim(), font,
settings.LetterSpacing);
if (textSize.Width > currentLine.LineBounds.Width)
{
EndLine(currentLine, currentLineText);
//start new line
currentLineText.Clear();
currentLine = StartNewLine(ref y);
currentLineText.Append(word + Constants.Space);
}
else
{
currentLineText.Append(word + Constants.Space);
}
}
if (currentLine != null && currentLineText.Length > 0)
{
EndLine(currentLine, currentLineText);
}
}
private void Justify(LineData line, Graphics lineGraphics)
{
var lineTextWithoutSpaces = line.Text.Replace(Constants.Space, string.Empty);
var lineSizeWithoutSpaces = PInvoked.MeasureString(lineGraphics, lineTextWithoutSpaces, font,
settings.LetterSpacing);
var spaceWidth = (line.TextSize.Width - lineSizeWithoutSpaces.Width) /
Math.Max((line.Text.Length - lineTextWithoutSpaces.Length), 1);
if (spaceWidth > font.Size * 3)
{
PInvoked.TextOut(lineGraphics, line.Text, 0, 0, font, settings.LetterSpacing);
}
else
{
var x = 0;
foreach (string word in line.Text.Split(Constants.SpaceChar))
{
var wordSize = PInvoked.MeasureString(lineGraphics, word, font, settings.LetterSpacing);
PInvoked.TextOut(lineGraphics, word, x, 0, font, settings.LetterSpacing);
x += wordSize.Width + spaceWidth;
}
}
}
