Function GetCharAtPosition

src/gfx_layout.cpp:441–447

* Get the character from a string that is drawn at a specific position. * @param str String to test. * @param x Position relative to the start of the string. * @param start_fontsize Font size to start the text with. * @return Index of the character position or -1 if there is no character at the position. */

 * @return Index of the character position or -1 if there is no character at the position.
 */
ptrdiff_t GetCharAtPosition(std::string_view str, int x, FontSize start_fontsize)
{
	if (x < 0) return -1;

	Layouter layout(str, INT32_MAX, start_fontsize);
	return layout.GetCharAtPosition(x, 0);
}