Function GUI_Widget_HandleEvents

src/gui/widget.c:243–505

* Check a widget for events like 'hover' or 'click'. Also check the keyboard * buffer if there was any key which should active us. * * @param w The widget to handle events for. If the widget has a valid next * pointer, those widgets are handled too. * @return The last key pressed, or 0 if the key pressed was handled (or if * there was no key press). */

 *   there was no key press).
 */
uint16 GUI_Widget_HandleEvents(Widget *w)
{
	static Widget *l_widget_selected     = NULL;
	static Widget *l_widget_last         = NULL;
	static uint16  l_widget_button_state = 0x0;

	uint16 mouseX, mouseY;
	uint16 buttonState;
	uint16 returnValue;
	uint16 key;
	bool fakeClick;

	/* Get the key from the buffer, if there was any key pressed */
	key = 0;
	if (Input_IsInputAvailable() != 0) {
		key = Input_Wait();
	}

	if (w == NULL) return key & 0x7FFF;

	/* First time this window is being drawn? */
	if (w != l_widget_last || s_widgetReset) {
		l_widget_last         = w;
		l_widget_selected     = NULL;
		l_widget_button_state = 0x0;
		s_widgetReset = false;

		/* Check for left click */
		if (Input_Test(0x41) != 0) l_widget_button_state |= 0x0200;

		/* Check for right click */
		if (Input_Test(0x42) != 0) l_widget_button_state |= 0x2000;

		/* Draw all the widgets */
		for (; w != NULL; w = GUI_Widget_GetNext(w)) {
			GUI_Widget_Draw(w);
		}
	}

	mouseX = g_mouseX;
	mouseY = g_mouseY;

	buttonState = 0;
	if (g_mouseDisabled == 0) {
		uint16 buttonStateChange = 0;

		/* See if the key was a mouse button action */
		if ((key & 0x8000) != 0) {
			if ((key & 0x00FF) == 0xC7) buttonStateChange = 0x1000;
			if ((key & 0x00FF) == 0xC6) buttonStateChange = 0x0100;
		} else {
			if ((key & 0x00FF) == 0x42) buttonStateChange = 0x1000;
			if ((key & 0x00FF) == 0x41) buttonStateChange = 0x0100;
		}

		/* Mouse button up */
		if ((key & 0x0800) != 0) {
			buttonStateChange <<= 2;