ui_qmenu.c

3D 游戏界的大牛人 John Carmack 终于放出了 Q3 的源代码

			if (s->curvalue != oldvalue)
				sound = menu_move_sound;
			else
				sound = 0;
			break;

		case K_KP_LEFTARROW:
		case K_LEFTARROW:
			if (s->curvalue > s->minvalue)
			{
				s->curvalue--;
				sound = menu_move_sound;
			}
			else
				sound = menu_buzz_sound;
			break;			

		case K_KP_RIGHTARROW:
		case K_RIGHTARROW:
			if (s->curvalue < s->maxvalue)
			{
				s->curvalue++;
				sound = menu_move_sound;
			}
			else
				sound = menu_buzz_sound;
			break;			

		default:
			// key not handled
			sound = 0;
			break;
	}

	if ( sound && s->generic.callback )
		s->generic.callback( s, QM_ACTIVATED );

	return (sound);
}

#if 1
/*
=================
Slider_Draw
=================
*/
static void Slider_Draw( menuslider_s *s ) {
	int			x;
	int			y;
	int			style;
	float		*color;
	int			button;
	qboolean	focus;
	
	x =	s->generic.x;
	y = s->generic.y;
	focus = (s->generic.parent->cursor == s->generic.menuPosition);

	if( s->generic.flags & QMF_GRAYED ) {
		color = text_color_disabled;
		style = UI_SMALLFONT;
	}
	else if( focus ) {
		color  = text_color_highlight;
		style = UI_SMALLFONT | UI_PULSE;
	}
	else {
		color = text_color_normal;
		style = UI_SMALLFONT;
	}

	// draw label
	UI_DrawString( x - SMALLCHAR_WIDTH, y, s->generic.name, UI_RIGHT|style, color );

	// draw slider
	UI_SetColor( color );
	UI_DrawHandlePic( x + SMALLCHAR_WIDTH, y, 96, 16, sliderBar );
	UI_SetColor( NULL );

	// clamp thumb
	if( s->maxvalue > s->minvalue )	{
		s->range = ( s->curvalue - s->minvalue ) / ( float ) ( s->maxvalue - s->minvalue );
		if( s->range < 0 ) {
			s->range = 0;
		}
		else if( s->range > 1) {
			s->range = 1;
		}
	}
	else {
		s->range = 0;
	}

	// draw thumb
	if( style & UI_PULSE) {
		button = sliderButton_1;
	}
	else {
		button = sliderButton_0;
	}

	UI_DrawHandlePic( (int)( x + 2*SMALLCHAR_WIDTH + (SLIDER_RANGE-1)*SMALLCHAR_WIDTH* s->range ) - 2, y - 2, 12, 20, button );
}
#else
/*
=================
Slider_Draw
=================
*/
static void Slider_Draw( menuslider_s *s )
{
	float *color;
	int	style;
	int	i;
	int x;
	int y;
	qboolean focus;
	
	x =	s->generic.x;
	y = s->generic.y;
	focus = (s->generic.parent->cursor == s->generic.menuPosition);

	style = UI_SMALLFONT;
	if ( s->generic.flags & QMF_GRAYED )
	{
		color = text_color_disabled;
	}
	else if (focus)
	{
		color  = text_color_highlight;
		style |= UI_PULSE;
	}
	else
	{
		color = text_color_normal;
	}

	if ( focus )
	{
		// draw cursor
		UI_FillRect( s->generic.left, s->generic.top, s->generic.right-s->generic.left+1, s->generic.bottom-s->generic.top+1, listbar_color ); 
		UI_DrawChar( x, y, 13, UI_CENTER|UI_BLINK|UI_SMALLFONT, color);
	}

	// draw label
	UI_DrawString( x - SMALLCHAR_WIDTH, y, s->generic.name, UI_RIGHT|style, color );

	// draw slider
	UI_DrawChar( x + SMALLCHAR_WIDTH, y, 128, UI_LEFT|style, color);
	for ( i = 0; i < SLIDER_RANGE; i++ )
		UI_DrawChar( x + (i+2)*SMALLCHAR_WIDTH, y, 129, UI_LEFT|style, color);
	UI_DrawChar( x + (i+2)*SMALLCHAR_WIDTH, y, 130, UI_LEFT|style, color);

	// clamp thumb
	if (s->maxvalue > s->minvalue)
	{
		s->range = ( s->curvalue - s->minvalue ) / ( float ) ( s->maxvalue - s->minvalue );
		if ( s->range < 0)
			s->range = 0;
		else if ( s->range > 1)
			s->range = 1;
	}
	else
		s->range = 0;

	// draw thumb
	if (style & UI_PULSE) {
		style &= ~UI_PULSE;
		style |= UI_BLINK;
	}
	UI_DrawChar( (int)( x + 2*SMALLCHAR_WIDTH + (SLIDER_RANGE-1)*SMALLCHAR_WIDTH* s->range ), y, 131, UI_LEFT|style, color);
}
#endif

/*
=================
SpinControl_Init
=================
*/
static void SpinControl_Init( menulist_s *s ) {
	int	len;
	int	l;
	const char* str;

	if (s->generic.name)
		len = strlen(s->generic.name) * SMALLCHAR_WIDTH;
	else
		len = 0;

	s->generic.left	= s->generic.x - SMALLCHAR_WIDTH - len;

	len = s->numitems = 0;
	while ( (str = s->itemnames[s->numitems]) != 0 )
	{
		l = strlen(str);
		if (l > len)
			len = l;

		s->numitems++;
	}		

	s->generic.top	  =	s->generic.y;
	s->generic.right  =	s->generic.x + (len+1)*SMALLCHAR_WIDTH;
	s->generic.bottom =	s->generic.y + SMALLCHAR_HEIGHT;
}

/*
=================
SpinControl_Key
=================
*/
static sfxHandle_t SpinControl_Key( menulist_s *s, int key )
{
	sfxHandle_t	sound;

	sound = 0;
	switch (key)
	{
		case K_MOUSE1:
			s->curvalue++;
			if (s->curvalue >= s->numitems)
				s->curvalue = 0;
			sound = menu_move_sound;
			break;
		
		case K_KP_LEFTARROW:
		case K_LEFTARROW:
			if (s->curvalue > 0)
			{
				s->curvalue--;
				sound = menu_move_sound;
			}
			else
				sound = menu_buzz_sound;
			break;

		case K_KP_RIGHTARROW:
		case K_RIGHTARROW:
			if (s->curvalue < s->numitems-1)
			{
				s->curvalue++;
				sound = menu_move_sound;
			}
			else
				sound = menu_buzz_sound;
			break;
	}

	if ( sound && s->generic.callback )
		s->generic.callback( s, QM_ACTIVATED );

	return (sound);
}

/*
=================
SpinControl_Draw
=================
*/
static void SpinControl_Draw( menulist_s *s )
{
	float *color;
	int	x,y;
	int	style;
	qboolean focus;

	x = s->generic.x;
	y =	s->generic.y;

	style = UI_SMALLFONT;
	focus = (s->generic.parent->cursor == s->generic.menuPosition);

	if ( s->generic.flags & QMF_GRAYED )
		color = text_color_disabled;
	else if ( focus )
	{
		color = text_color_highlight;
		style |= UI_PULSE;
	}
	else if ( s->generic.flags & QMF_BLINK )
	{
		color = text_color_highlight;
		style |= UI_BLINK;
	}
	else
		color = text_color_normal;

	if ( focus )
	{
		// draw cursor
		UI_FillRect( s->generic.left, s->generic.top, s->generic.right-s->generic.left+1, s->generic.bottom-s->generic.top+1, listbar_color ); 
		UI_DrawChar( x, y, 13, UI_CENTER|UI_BLINK|UI_SMALLFONT, color);
	}

	UI_DrawString( x - SMALLCHAR_WIDTH, y, s->generic.name, style|UI_RIGHT, color );
	UI_DrawString( x + SMALLCHAR_WIDTH, y, s->itemnames[s->curvalue], style|UI_LEFT, color );
}

/*
=================
ScrollList_Init
=================
*/
static void ScrollList_Init( menulist_s *l )
{
	int		w;

	l->oldvalue = 0;
	l->curvalue = 0;
	l->top      = 0;

	if( !l->columns ) {
		l->columns = 1;
		l->seperation = 0;
	}
	else if( !l->seperation ) {
		l->seperation = 3;
	}

	w = ( (l->width + l->seperation) * l->columns - l->seperation) * SMALLCHAR_WIDTH;

	l->generic.left   =	l->generic.x;
	l->generic.top    = l->generic.y;	
	l->generic.right  =	l->generic.x + w;
	l->generic.bottom =	l->generic.y + l->height * SMALLCHAR_HEIGHT;

	if( l->generic.flags & QMF_CENTER_JUSTIFY ) {
		l->generic.left -= w / 2;
		l->generic.right -= w / 2;
	}
}

/*
=================
ScrollList_Key
=================
*/
sfxHandle_t ScrollList_Key( menulist_s *l, int key )
{
	int	x;
	int	y;
	int	w;
	int	i;
	int	j;	
	int	c;
	int	cursorx;
	int	cursory;
	int	column;
	int	index;

	switch (key)
	{
		case K_MOUSE1:
			if (l->generic.flags & QMF_HASMOUSEFOCUS)
			{
				// check scroll region
				x = l->generic.x;
				y = l->generic.y;
				w = ( (l->width + l->seperation) * l->columns - l->seperation) * SMALLCHAR_WIDTH;
				if( l->generic.flags & QMF_CENTER_JUSTIFY ) {
					x -= w / 2;
				}
				if (UI_CursorInRect( x, y, w, l->height*SMALLCHAR_HEIGHT ))
				{
					cursorx = (uis.cursorx - x)/SMALLCHAR_WIDTH;
					column = cursorx / (l->width + l->seperation);
					cursory = (uis.cursory - y)/SMALLCHAR_HEIGHT;
					index = column * l->height + cursory;
					if (l->top + index < l->numitems)
					{
						l->oldvalue = l->curvalue;
						l->curvalue = l->top + index;

						if (l->oldvalue != l->curvalue && l->generic.callback)
						{
							l->generic.callback( l, QM_GOTFOCUS );
							return (menu_move_sound);
						}
					}
				}
			
				// absorbed, silent sound effect
				return (menu_null_sound);
			}
			break;

		case K_KP_HOME:
		case K_HOME:
			l->oldvalue = l->curvalue;
			l->curvalue = 0;
			l->top      = 0;

			if (l->oldvalue != l->curvalue && l->generic.callback)
			{
				l->generic.callback( l, QM_GOTFOCUS );
				return (menu_move_sound);
			}
			return (menu_buzz_sound);

		case K_KP_END:
		case K_END:
			l->oldvalue = l->curvalue;
			l->curvalue = l->numitems-1;
			if( l->columns > 1 ) {
				c = (l->curvalue / l->height + 1) * l->height;
				l->top = c - (l->columns * l->height);
			}
			else {
				l->top = l->curvalue - (l->height - 1);
			}
			if (l->top < 0)
				l->top = 0;			

			if (l->oldvalue != l->curvalue && l->generic.callback)
			{
				l->generic.callback( l, QM_GOTFOCUS );
				return (menu_move_sound);
			}
			return (menu_buzz_sound);

		case K_PGUP:
		case K_KP_PGUP:
			if( l->columns > 1 ) {
				return menu_null_sound;
			}

			if (l->curvalue > 0)
			{
				l->oldvalue = l->curvalue;
				l->curvalue -= l->height-1;
				if (l->curvalue < 0)
					l->curvalue = 0;
				l->top = l->curvalue;
				if (l->top < 0)
					l->top = 0;

				if (l->generic.callback)
					l->generic.callback( l, QM_GOTFOCUS );

				return (menu_move_sound);
			}
			return (menu_buzz_sound);

		case K_PGDN:
		case K_KP_PGDN:
			if( l->columns > 1 ) {
				return menu_null_sound;
			}

			if (l->curvalue < l->numitems-1)
			{
				l->oldvalue = l->curvalue;
				l->curvalue += l->height-1;
				if (l->curvalue > l->numitems-1)
					l->curvalue = l->numitems-1;
				l->top = l->curvalue - (l->height-1);
				if (l->top < 0)
					l->top = 0;

				if (l->generic.callback)
					l->generic.callback( l, QM_GOTFOCUS );

				return (menu_move_sound);
			}
			return (menu_buzz_sound);

		case K_KP_UPARROW:
		case K_UPARROW:
			if( l->curvalue == 0 ) {
				return menu_buzz_sound;
			}

			l->oldvalue = l->curvalue;
			l->curvalue--;

			if( l->curvalue < l->top ) {
				if( l->columns == 1 ) {
					l->top--;
				}
				else {
					l->top -= l->height;
				}
			}

			if( l->generic.callback ) {
				l->generic.callback( l, QM_GOTFOCUS );
			}

			return (menu_move_sound);

		case K_KP_DOWNARROW:
		case K_DOWNARROW:
			if( l->curvalue == l->numitems - 1 ) {
				return menu_buzz_sound;
			}

			l->oldvalue = l->curvalue;
			l->curvalue++;

			if( l->curvalue >= l->top + l->columns * l->height ) {
				if( l->columns == 1 ) {
					l->top++;
				}
				else {
					l->top += l->height;
				}
			}

			if( l->generic.callback ) {
				l->generic.callback( l, QM_GOTFOCUS );
			}

			return menu_move_sound;

		case K_KP_LEFTARROW:
		case K_LEFTARROW:
			if( l->columns == 1 ) {
				return menu_null_sound;
			}

			if( l->curvalue < l->height ) {
				return menu_buzz_sound;
			}

			l->oldvalue = l->curvalue;
			l->curvalue -= l->height;

			if( l->curvalue < l->top ) {
				l->top -= l->height;
			}

			if( l->generic.callback ) {
				l->generic.callback( l, QM_GOTFOCUS );
			}

			return menu_move_sound;

		case K_KP_RIGHTARROW:
		case K_RIGHTARROW:
			if( l->columns == 1 ) {
				return menu_null_sound;
			}

			c = l->curvalue + l->height;

			if( c >= l->numitems ) {
				return menu_buzz_sound;
			}

			l->oldvalue = l->curvalue;
			l->curvalue = c;

			if( l->curvalue > l->top + l->columns * l->height - 1 ) {
				l->top += l->height;
			}

			if( l->generic.callback ) {
				l->generic.callback( l, QM_GOTFOCUS );
			}

			return menu_move_sound;
	}

	// cycle look for ascii key inside list items
	if ( !Q_isprint( key ) )
		return (0);

	// force to lower for case insensitive compare
	if ( Q_isupper( key ) )
	{
		key -= 'A' - 'a';
	}

	// iterate list items
	for (i=1; i<=l->numitems; i++)
	{
		j = (l->curvalue + i) % l->numitems;
		c = l->itemnames[j][0];
		if ( Q_isupper( c ) )
		{
			c -= 'A' - 'a';
		}