tester.py

tester.py

import editor
import math
import ui

import circular_slider as CS

def css_clr_to_rgba(css_name, a):
	c = ui.parse_color(css_name)
	return (c[0], c[1], c[2], a)	
	
def rects_on_circle_path(rect_path, obj_width,
							margin=2, N=12):
	def calculate_a_rect(i):
		a = 2 * math.pi * i/ N - math.pi/2
		# careful: cos,sin! not sin,cos
		pos = (math.cos(a)*(radius*1), math.sin(a)*(radius*1)) 
		r1 = ui.Rect(*pos, obj_width, obj_width)
		r1.x += r.width / 2 - obj_width / 2 + r.x
		r1.y += r.height / 2 - obj_width / 2 + r.y
		
		return r1
		
	r = ui.Rect(*rect_path).inset(obj_width / 2 + margin, obj_width / 2 + margin)
	radius = r.width / 2
	return r, [calculate_a_rect(i) for i in range(N)]

def draw_arc(rect, start, finish, 
			ln_color = 'white', ln_width = 15, offset = -90):
	# offset = -90 for degress, offset = 0 for radians
	r = ui.Rect(*rect)
	cy = r.center()[0]
	cx = r.center()[1]
	
	s = ui.Path()

	radius = r.width / 2
	
	start = math.radians(start + offset)
	finish = math.radians(finish + offset )
	
	x = cy+radius * math.cos(start) 
	y = cx+radius * math.sin(start)
	
	s.move_to(x, y)
	s.add_arc(cy, cx, radius, start, finish)
	
	ui.set_color(ln_color)
	s.line_width = ln_width
	s.line_cap_style = ui.LINE_CAP_ROUND
	s.stroke()
	


def create_btn_list(N = 12, *args, **kwargs):
	def btn_action(sender):
		print('btn_name:{}'.format(sender.name))
	
	def apply_kwargs(obj, **kwargs):
		for k, v in kwargs.items():
			if hasattr(obj, k):
				setattr(obj, k, v)
				
	btn_list = []
	for i in range(0, N):
		btn = ui.Button(name = str(i), title = str(i))
		btn.action = btn_action
		apply_kwargs(btn, **kwargs)
		btn_list.append(btn)
	return btn_list
	
class Test(ui.View):
	def __init__(self, obj_list, obj_w=32, margin = 2, action =None,
						*args, **kwargs):
		super().__init__(*args, **kwargs)
		self.cs = None
		self.r = None
		self.obj_list = obj_list
		self.obj_w = obj_w
		self.margin = margin
		self.action = action
		self.degree = 0
		self.make_view()
		
	def make_view(self):
		for obj in self.obj_list:
			self.add_subview(obj)
		
	def layout(self):
		r , rects = rects_on_circle_path(self.bounds, self.obj_w, margin=self.margin, N=len(self.obj_list))
		self.r = r
		
		if not self['CS']:
			self.cs = CS.CircularSlider(frame = r, name = 'CS')
			self.cs.action = self.cs_action
			self.cs.continuous = True
			self.cs.alpha = .05
			self.add_subview(self.cs)
		
		for i, r in enumerate(rects):
			self.obj_list[i].frame = r
			
	def cs_action(self, sender):
		self.degree = (sender.value / .6) * 360
		self.set_needs_display()
		
	def draw(self):
		draw_arc(self.r, 0, self.degree, 
			ln_color = css_clr_to_rgba('deeppink', 5), ln_width = 15, offset = -90)
		
if __name__ == '__main__':
	_use_theme = True
	w=h = 500
	f = (0, 0, w, h)
	style = 'sheet'
		
	margin = 40
	N = 12
	ow = 10
	
	obj_list = create_btn_list(N = N, bg_color = 'lime')
	mc = Test(obj_list, margin = margin, frame=f, bg_color='white', obj_w = ow)
	
	if not _use_theme:
		mc.present(style = style, animated=False)
	else:
		editor.present_themed(mc, theme_name='Oceanic', style=style, animated=False)