public IndexedImage GetSymbolImage(char symbol, int imageSize, int fontRgb = 0, int backgroundRgb = 0x00ffffff)
{
symbolImageSize = imageSize;
var symbolImage = new IndexedImage {
Size = new Size(imageSize, imageSize)
};
SymbolsPainter.PaintSymbol(symbol, symbolImage.Pixels, symbolImage.Size, default(Point), fontRgb: fontRgb, backgroundRgb: backgroundRgb);
return(symbolImage);
}
void UpdateImageQuick(int firstSymbol, int lastSymbolExclusive)
{
var clipRect = new Rectangle(0, 0, VisualImage.Size.Width, VisualImage.Size.Height);
int[] imagePixels;
using (VisualImage.LockPixels(out imagePixels))
{
Parallel.For(firstSymbol, lastSymbolExclusive,
index =>
{
var cellX = index % ColumnsCount;
var cellY = index / ColumnsCount;
var point = new Point(cellX * CellSize, cellY * CellSize - VerticalShift);
if (index >= Controller.AvailableSymbols.Count)
{
SymbolsPainter.PaintSymbol(' ', imagePixels, VisualImage.Size, point, clipRect, PlainFontColor, PlainBackground);
}
else
{
var symbolSelectionPair = Controller.AvailableSymbols[index];
var highlight = cellX == HighlightedCell.X && cellY == HighlightedCell.Y;
int background, fontColor;
if (symbolSelectionPair.Value)
{
background = highlight ? HighlightedSelectedBackground : SelectedBackground;
fontColor = highlight ? HighlightedSelectedFontColor : SelectedFontColor;
}
else
{
background = highlight ? HighlightedPlainBackground : PlainBackground;
fontColor = highlight ? HighlightedPlainFontColor : PlainFontColor;
}
SymbolsPainter.PaintSymbol(symbolSelectionPair.Key, imagePixels, VisualImage.Size, point, clipRect, fontColor, background);
}
});
}
}
