# slider.py
import utils,pygame,g,copy

# sets g.level 1..steps
class Slider:
    def __init__(self,cx,cy,steps,colour=utils.BLACK):
        self.easy=utils.load_image('slow.png',True)
        self.hard=utils.load_image('fast.png',True)
        self.xo=utils.load_image('xo.png',True)
        iw=self.hard.get_width(); ih=self.hard.get_height()
        w=g.sy(16); w2=w/2; h2=ih/2
        self.x1=cx-w2; self.y=cy-h2; self.x2=cx+w2-iw
        x=cx-w2+iw*1.2; w=w-2*iw*1.2; h=g.sy(.12);y=cy+g.sy(.34)
        self.rect=pygame.Rect(x,y,w,h)
        mh=g.sy(1);self.mark=pygame.Rect(x,y-mh/2+h/2,h,mh)
        self.steps=steps; self.dx=w/(steps-1);self.colour=colour
        self.cx=cx; self.cy=cy
        marks=[]; x=self.rect.left; click_rects=[]; dx=self.dx
        for i in range(self.steps):
            rect=copy.copy(self.mark); rect.left=x-5; rect.width=10; marks.append(rect)
            click_rect=pygame.Rect(x-dx/2,self.mark.top,dx,self.mark.h)
            click_rects.append(click_rect)
            x+=dx
        self.marks=marks; self.click_rects=click_rects

    def draw(self):
        g.screen.blit(self.easy,(self.x1,self.y));
        g.screen.blit(self.hard,(self.x2,self.y))
        pygame.draw.rect(g.screen,self.colour,self.rect) # horizontal line
        x=self.rect.left # now draw marks
        for i in range(self.steps):
            self.mark.left=x; pygame.draw.rect(g.screen,self.colour,self.mark)
            if i==(g.level-1):
                dx=self.xo.get_width()/2; dy=self.xo.get_height()/2
                g.screen.blit(self.xo,(x-dx+self.mark.w/2,self.cy-dy))
            x+=self.dx

    def mouse(self):
        mx,my=g.pos
        rect=self.easy.get_rect(topleft=(self.x1,self.y))
        if rect.collidepoint(mx,my):
            if g.level>1: g.level-=1; return True#****
        rect=self.hard.get_rect(topleft=(self.x2,self.y))
        if rect.collidepoint(mx,my):
            if g.level<self.steps: g.level+=1; return True#****
        n=1
        for rect in self.click_rects:
            if rect.collidepoint(mx,my):
                if g.level==n:
                    return False#****
                else:
                    g.level=n; return True#****
            n+=1
        return False