Method GetBoundingRect

src/misc_gui.cpp:821–842

* Get the bounding rectangle for a range of the query string. * @param w Window the edit box is in. * @param wid Widget index. * @param from Start of the string range. * @param to End of the string range. * @return Rectangle encompassing the string range, relative to the window. */

 * @return Rectangle encompassing the string range, relative to the window.
 */
Rect QueryString::GetBoundingRect(const Window *w, WidgetID wid, size_t from, size_t to) const
{
	const NWidgetLeaf *wi = w->GetWidget<NWidgetLeaf>(wid);

	assert((wi->type & WWT_MASK) == WWT_EDITBOX);

	bool rtl = _current_text_dir == TD_RTL;
	Dimension sprite_size = GetScaledSpriteSize(rtl ? SPR_IMG_DELETE_RIGHT : SPR_IMG_DELETE_LEFT);
	int clearbtn_width = sprite_size.width + WidgetDimensions::scaled.imgbtn.Horizontal();

	Rect r = wi->GetCurrentRect().Indent(clearbtn_width, !rtl).Shrink(WidgetDimensions::scaled.framerect);

	/* Clamp caret position to be inside our current width. */
	const Textbuf *tb = &this->text;
	r = ScrollEditBoxTextRect(r, *tb);

	/* Get location of first and last character. */
	const auto p1 = GetCharPosInString(tb->GetText(), from, FS_NORMAL);
	const auto p2 = from != to ? GetCharPosInString(tb->GetText(), to, FS_NORMAL) : p1;

	return r.WithX(Clamp(r.left + p1.left, r.left, r.right), Clamp(r.left + p2.right, r.left, r.right));
}

/**
 * Get the character that is rendered at a position.