/// <summary>
/// Returns the raw sprite from the specified character.
/// </summary>
internal Bitmap GetRawChar(char c, FontFace font = null)
{
ImportFont(font);
font ??= CurrentFont;
if (WhiteSpaceInfo.IsWhiteSpace(c) || c == '\n')
{
return(null);
}
CharIndex i = ImageHelper.GetCharIndex(c, CharMap);
if (!i.IsSuccess || !font.SheetUrls.Keys.Contains(i.Page))
{
// TODO: Return UNKNOWN unicode character
return(null);
}
// TODO: Handle directory assignment
using var bmp = new Bitmap($"{DefaultFontDirectory}{font.SheetUrls[i.Page]}");
int x = font.CharWidth * i.Column;
int y = font.CharHeight * i.Row;
var crop = new Rectangle(x, y, font.CharWidth, font.CharHeight);
Bitmap tmp = ImageHelper.Crop(bmp, crop);
return(tmp);
}
// TODO: Implement max width and max height comparisons
private TextData CreateText(string content, FontFace font, Padding?imagePadding = null, bool trimEmptyPixels = true, bool extendOnOffset = false)
{
ImportFont(font);
font ??= CurrentFont;
bool canTrim = trimEmptyPixels && !font.IsMonospace;
Padding padding = imagePadding ?? Padding.Empty;
if (!extendOnOffset)
{
extendOnOffset = font.Overrides?.Any(x => x.GetOffset() != null) ?? false;
}
var cursor = new Cursor();
var charData = new List <CharData>();
var imageMap = new Dictionary <char, Bitmap>();
int cursorHeight = font.Padding.Height + font.CharHeight;
int charIndex = 0;
int renderWidth = 0;
int renderHeight = 0;
int yMaxOffset = 0;
foreach (char c in content)
{
// NOTE: Calculate the character's initial width and padding
Padding charPadding = font.Padding.Clone();
int drawWidth = font.GetCharWidth(c);
// NOTE: Handle all line breaks here
if (c == '\n')
{
int vX = padding.Left + cursor.X;
int vY = padding.Top + cursor.Y;
charData.Add(new CharData(null, c, vX, vY, 0, font.CharHeight));
if (cursor.X > renderWidth)
{
renderWidth = cursor.X;
}
cursor.X = charPadding.Left;
cursor.Y += cursorHeight + 1;
if (cursor.Y > renderHeight)
{
renderHeight = cursor.Y;
}
charIndex++;
continue;
}
// NOTE: Handle all whitespace characters
if (WhiteSpaceInfo.IsWhiteSpace(c))
{
int emptyWidth = canTrim ? drawWidth : drawWidth + charPadding.Width;
int vX = padding.Left + cursor.X;
int vY = padding.Top + cursor.Y;
charData.Add(new CharData(null, c, vX, vY, emptyWidth, font.CharHeight));
cursor.X += emptyWidth;
charIndex++;
continue;
}
// NOTE: Try to assign a matching sprite for this character
if (!imageMap.ContainsKey(c))
{
imageMap[c] = GetChar(c, font, trimEmptyPixels);
}
// NOTE: Ignore handling this sprite if there isn't an image assigned to it
if (imageMap[c] == null)
{
continue;
}
// NOTE: Otherwise, if an image for this character does exist, try to assign the actual width to it
if (canTrim)
{
drawWidth = imageMap[c].Width;
}
int cursorWidth = charPadding.Width + drawWidth;
yMaxOffset += Math.Max(font.GetCharOffset(c).Y, 0);
// NOTE: No left padding if it's the first character
if (charIndex == 0)
{
cursorWidth -= charPadding.Left;
charPadding.Left = 0;
}
// NOTE: No right padding if it's the final character
if (charIndex == content.Length - 1)
{
cursorWidth -= charPadding.Right;
charPadding.Right = 0;
}
if (charIndex > 0 && charIndex < content.Length - 1)
{
char?beforeChar = content.ElementAtOrDefault(charIndex - 1);
char?afterChar = content.ElementAtOrDefault(charIndex + 1);
if (beforeChar.HasValue && beforeChar != '\n')
{
cursorWidth -= charPadding.Left;
charPadding.Left = 0;
}
if (afterChar.HasValue)
{
if (afterChar == '\n' || WhiteSpaceInfo.IsWhiteSpace(afterChar.Value))
{
cursorWidth -= charPadding.Right;
charPadding.Right = 0;
}
}
}
int pX = padding.Left + cursor.X;
int pY = padding.Top + cursor.Y;
charData.Add(new CharData(imageMap[c], c, pX, pY, drawWidth, font.CharHeight, charPadding, font.GetCharOffset(c)));
cursor.X += cursorWidth;
charIndex++;
}
int height = renderHeight + font.CharHeight;
int width = cursor.X > renderWidth ? cursor.X : renderWidth;
// NOTE: If the image is extended from offsets, include it to the final height
if (extendOnOffset)
{
height += yMaxOffset;
}
return(new TextData(content, padding, width, height, charData));
}
private static bool IsNonEmptyChar(char c) => !WhiteSpaceInfo.IsWhiteSpace(c) && c != '\n';