Function DrawArrowButtons

src/settings_gui.cpp:1866–1887

* Draw [<][>] boxes. * @param x the x position to draw * @param y the y position to draw * @param button_colour the colour of the button * @param state 0 = none clicked, 1 = first clicked, 2 = second clicked * @param clickable_left is the left button clickable? * @param clickable_right is the right button clickable? */

 * @param clickable_right is the right button clickable?
 */
void DrawArrowButtons(int x, int y, Colours button_colour, uint8_t state, bool clickable_left, bool clickable_right)
{
	PixelColour colour = GetColourGradient(button_colour, SHADE_DARKER);
	Dimension dim = NWidgetScrollbar::GetHorizontalDimension();

	Rect lr = {x,                  y, x + (int)dim.width     - 1, y + (int)dim.height - 1};
	Rect rr = {x + (int)dim.width, y, x + (int)dim.width * 2 - 1, y + (int)dim.height - 1};

	DrawFrameRect(lr, button_colour, (state == 1) ? FrameFlag::Lowered : FrameFlags{});
	DrawFrameRect(rr, button_colour, (state == 2) ? FrameFlag::Lowered : FrameFlags{});
	DrawSpriteIgnorePadding(SPR_ARROW_LEFT,  PAL_NONE, lr, SA_CENTER);
	DrawSpriteIgnorePadding(SPR_ARROW_RIGHT, PAL_NONE, rr, SA_CENTER);

	/* Grey out the buttons that aren't clickable */
	bool rtl = _current_text_dir == TD_RTL;
	if (rtl ? !clickable_right : !clickable_left) {
		GfxFillRect(lr.Shrink(WidgetDimensions::scaled.bevel), colour, FILLRECT_CHECKER);
	}
	if (rtl ? !clickable_left : !clickable_right) {
		GfxFillRect(rr.Shrink(WidgetDimensions::scaled.bevel), colour, FILLRECT_CHECKER);
	}
}

/**
 * Draw [^][v] buttons