Function DrawUpDownButtons

src/settings_gui.cpp:1898–1914

* Draw [^][v] buttons * @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_up is the up button clickable? * @param clickable_down is the down button clickable? */

 * @param clickable_down is the down button clickable?
 */
void DrawUpDownButtons(int x, int y, Colours button_colour, uint8_t state, bool clickable_up, bool clickable_down)
{
	PixelColour colour = GetColourGradient(button_colour, SHADE_DARKER);

	Rect r = {x, y, x + SETTING_BUTTON_WIDTH - 1, y + SETTING_BUTTON_HEIGHT - 1};
	Rect ur = r.WithWidth(SETTING_BUTTON_WIDTH / 2, (_current_text_dir == TD_RTL));
	Rect dr = r.WithWidth(SETTING_BUTTON_WIDTH / 2, (_current_text_dir != TD_RTL));

	DrawFrameRect(ur, button_colour, (state == 1) ? FrameFlag::Lowered : FrameFlags{});
	DrawFrameRect(dr, button_colour, (state == 2) ? FrameFlag::Lowered : FrameFlags{});
	DrawSpriteIgnorePadding(SPR_ARROW_UP, PAL_NONE, ur, SA_CENTER);
	DrawSpriteIgnorePadding(SPR_ARROW_DOWN, PAL_NONE, dr, SA_CENTER);

	/* Grey out the buttons that aren't clickable */
	if (!clickable_up) GfxFillRect(ur.Shrink(WidgetDimensions::scaled.bevel), colour, FILLRECT_CHECKER);
	if (!clickable_down) GfxFillRect(dr.Shrink(WidgetDimensions::scaled.bevel), colour, FILLRECT_CHECKER);
}

/**
 * Draw a dropdown button.