public virtual void Draw(GraphicsHandler graphicsHandler)
{
// textbox itself (includes border)
box.Draw(graphicsHandler);
// setting scissor rectangle to the size of the whitespace in textbox
// anything attempting to be drawn outside of scissor rectangle will be cut off
// necessary to cut off text and such, since otherwise there's no way to only draw a partial letter of a spritefont
graphicsHandler.SetScissorRectangle(new Rectangle(
(int)box.X + box.BorderThickness,
(int)box.Y + box.BorderThickness,
box.Width - box.BorderThickness,
box.Height - box.BorderThickness
));
// highlighting
int highlightX = StartLocationX + (HighlightStartIndex * fontCharLength) - ScrollOffset + (HighlightStartIndex * (int)font.Spacing);
int highlightWidth = ((HighlightEndIndex - HighlightStartIndex) * fontCharLength) + ((HighlightEndIndex - HighlightStartIndex) * (int)font.Spacing);
graphicsHandler.DrawFilledRectangle(new Rectangle(highlightX, StartLocationY, highlightWidth, EndLocationY - StartLocationY), HighlightColor);
// text
graphicsHandler.DrawString(font, Text, new Vector2(StartLocationX - ScrollOffset, box.Y), color: TextColor);
// cursor
if (showCursor && !IsTextHighlighted)
{
graphicsHandler.DrawLine(new Vector2(StartLocationX + CursorOffset - ScrollOffset, StartLocationY), new Vector2(StartLocationX + CursorOffset - ScrollOffset, EndLocationY), CursorColor);
}
graphicsHandler.RemoveScissorRectangle();
// if text is highlighted, the text needs to be redrawn to be the highlight color
if (IsTextHighlighted)
{
int highlightTextX = StartLocationX + (HighlightStartIndex * fontCharLength) - ScrollOffset + (HighlightStartIndex * (int)font.Spacing);
int highlightTextWidth = ((HighlightEndIndex - HighlightStartIndex) * fontCharLength) + ((HighlightEndIndex - HighlightStartIndex) * (int)font.Spacing);
if (highlightTextX + highlightTextWidth > box.X + box.Width - box.BorderThickness)
{
highlightTextWidth = (int)box.X + box.Width - highlightTextX;
}
if (highlightTextX < (int)box.X + box.BorderThickness)
{
int difference = (int)box.X + box.BorderThickness - highlightTextX;
highlightTextX = (int)box.X + box.BorderThickness;
highlightTextWidth -= difference;
}
// redraw the spritefont text only where the text is highlighted
graphicsHandler.SetScissorRectangle(new Rectangle(highlightTextX, StartLocationY, highlightTextWidth, EndLocationY - StartLocationY));
// draw text in highlighted color
graphicsHandler.DrawString(font, Text, new Vector2(StartLocationX - ScrollOffset, box.Y), color: HighlightTextColor);
graphicsHandler.RemoveScissorRectangle();
}
}