/// <summary>
/// Draw the given string using the given font and foreground color at given location.
/// </summary>
/// <param name="str">the string to draw</param>
/// <param name="font">the font to use to draw the string</param>
/// <param name="color">the text color to set</param>
/// <param name="point">the location to start string draw (top-left)</param>
/// <param name="size">used to know the size of the rendered text for transparent text support</param>
/// <param name="rtl">is to render the string right-to-left (true - RTL, false - LTR)</param>
public override void DrawString(string str, RFont font, RColor color, RPoint point, RSize size, bool rtl)
{
var textSurface = SDL_ttf.TTF_RenderUTF8_Blended(font.ToTTF_Font(), str, color.ToSDL());
if (textSurface.ShowSDLError("Graphics.DrawString: Unable to TTF_RenderUTF8_Blended!"))
{
return;
}
var texture_text = SDL.SDL_CreateTextureFromSurface(_renderer, textSurface);
if (texture_text.ShowSDLError("Graphics.DrawString: Unable to CreateTextureFromSurface!"))
{
SDL.SDL_FreeSurface(textSurface);
return;
}
var dst_rect = textSurface.As <SDL.SDL_Surface>().ToSDL_Rect().UpdatedByRPoint(point);
if (SDL.SDL_RenderCopy(_renderer, texture_text, IntPtr.Zero, ref dst_rect) < 0)
{
Helpers.ShowSDLError("Graphics.DrawString:Unable to SDL_RenderCopy!");
}
SDL.SDL_DestroyTexture(texture_text);
SDL.SDL_FreeSurface(textSurface);
}
public override RSize MeasureString(string str, RFont font)
{
SDL_ttf.TTF_SizeUTF8(font.ToTTF_Font(), str, out int w, out int h);
return(new RSize(w, h));
}