import PySimpleGUI as sg import psutil import sys import math """ Another simple Desktop Widget using PySimpleGUI This time a RAM Usage indicator using a custom Gauge element The Gauge class was developed by the brilliant PySimpleGUI user and support-helper @jason990420 It has been hacked on a bit, had classes and functions moved around. It could be cleaned up some but it's "good enough" at this point to release as a demo. This is a good example of how you can use Graph Elements to create your own custom elements. This Gauge element is created from a Graph element. Copyright 2020 PySimpleGUI.org """ ALPHA = 0.8 THEME = 'Dark Green 5' UPDATE_FREQUENCY_MILLISECONDS = 2 * 1000 class Gauge(): def mapping(func, sequence, *argc): """ Map function with extra argument, not for tuple. : Parameters func - function to call. sequence - list for iteration. argc - more arguments for func. : Return list of func(element of sequence, *argc) """ if isinstance(sequence, list): return list(map(lambda i: func(i, *argc), sequence)) else: return func(sequence, *argc) def add(number1, number2): """ Add two number : Parameter number1 - number to add. numeer2 - number to add. : Return Addition result for number1 and number2. """ return number1 + number1 def limit(number): """ Limit angle in range 0 ~ 360 : Parameter number: angle degree. : Return angel degree in 0 ~ 360, return 0 if number < 0, 360 if number > 360. """ return max(min(360, number), 0) class Clock(): """ Draw background circle or arc All angles defined as clockwise from negative x-axis. """ def __init__(self, center_x=0, center_y=0, radius=100, start_angle=0, stop_angle=360, fill_color='white', line_color='black', line_width=2, graph_elem=None): instance = Gauge.mapping(isinstance, [center_x, center_y, radius, start_angle, stop_angle, line_width], (int, float)) + Gauge.mapping(isinstance, [fill_color, line_color], str) if False in instance: raise ValueError start_angle, stop_angle = Gauge.limit(start_angle), Gauge.limit(stop_angle) self.all = [center_x, center_y, radius, start_angle, stop_angle, fill_color, line_color, line_width] self.figure = [] self.graph_elem = graph_elem self.new() def new(self): """ Draw Arc or circle """ x, y, r, start, stop, fill, line, width = self.all start, stop = (180 - start, 180 - stop) if stop < start else (180 - stop, 180 - start) if start == stop % 360: self.figure.append(self.graph_elem.DrawCircle((x, y), r, fill_color=fill, line_color=line, line_width=width)) else: self.figure.append(self.graph_elem.DrawArc((x - r, y + r), (x + r, y - r), stop - start, start, style='arc', arc_color=fill)) def move(self, delta_x, delta_y): """ Move circle or arc in clock by delta x, delta y """ if False in Gauge.mapping(isinstance, [delta_x, delta_y], (int, float)): raise ValueError self.all[0] += delta_x self.all[1] += delta_y for figure in self.figure: self.graph_elem.MoveFigure(figure, delta_x, delta_y) class Pointer(): """ Draw pointer of clock All angles defined as clockwise from negative x-axis. """ def __init__(self, center_x=0, center_y=0, angle=0, inner_radius=20, outer_radius=80, outer_color='white', pointer_color='blue', origin_color='black', line_width=2, graph_elem=None): instance = Gauge.mapping(isinstance, [center_x, center_y, angle, inner_radius, outer_radius, line_width], (int, float)) + Gauge.mapping(isinstance, [outer_color, pointer_color, origin_color], str) if False in instance: raise ValueError self.all = [center_x, center_y, angle, inner_radius, outer_radius, outer_color, pointer_color, origin_color, line_width] self.figure = [] self.stop_angle = angle self.graph_elem = graph_elem self.new(degree=angle) def new(self, degree=0): """ Draw new pointer by angle, erase old pointer if exist degree defined as clockwise from negative x-axis. """ (center_x, center_y, angle, inner_radius, outer_radius, outer_color, pointer_color, origin_color, line_width) = self.all if self.figure != []: for figure in self.figure: self.graph_elem.DeleteFigure(figure) self.figure = [] d = degree - 90 self.all[2] = degree dx1 = int(2 * inner_radius * math.sin(d / 180 * math.pi)) dy1 = int(2 * inner_radius * math.cos(d / 180 * math.pi)) dx2 = int(outer_radius * math.sin(d / 180 * math.pi)) dy2 = int(outer_radius * math.cos(d / 180 * math.pi)) self.figure.append(self.graph_elem.DrawLine((center_x - dx1, center_y - dy1), (center_x + dx2, center_y + dy2), color=pointer_color, width=line_width)) self.figure.append(self.graph_elem.DrawCircle((center_x, center_y), inner_radius, fill_color=origin_color, line_color=outer_color, line_width=line_width)) def move(self, delta_x, delta_y): """ Move pointer with delta x and delta y """ if False in Gauge.mapping(isinstance, [delta_x, delta_y], (int, float)): raise ValueError self.all[:2] = [self.all[0] + delta_x, self.all[1] + delta_y] for figure in self.figure: self.graph_elem.MoveFigure(figure, delta_x, delta_y) class Tick(): """ Create tick on click for minor tick, also for major tick All angles defined as clockwise from negative x-axis. """ def __init__(self, center_x=0, center_y=0, start_radius=90, stop_radius=100, start_angle=0, stop_angle=360, step=6, line_color='black', line_width=2, graph_elem=None): instance = Gauge.mapping(isinstance, [center_x, center_y, start_radius, stop_radius, start_angle, stop_angle, step, line_width], (int, float)) + [Gauge.mapping(isinstance, line_color, (list, str))] if False in instance: raise ValueError start_angle, stop_angle = Gauge.limit(start_angle), Gauge.limit(stop_angle) self.all = [center_x, center_y, start_radius, stop_radius, start_angle, stop_angle, step, line_color, line_width] self.figure = [] self.graph_elem = graph_elem self.new() def new(self): """ Draw ticks on clock """ (x, y, start_radius, stop_radius, start_angle, stop_angle, step, line_color, line_width) = self.all start_angle, stop_angle = (180 - start_angle, 180 - stop_angle ) if stop_angle < start_angle else (180 - stop_angle, 180 - start_angle) for i in range(start_angle, stop_angle + 1, step): start_x = x + start_radius * math.cos(i / 180 * math.pi) start_y = y + start_radius * math.sin(i / 180 * math.pi) stop_x = x + stop_radius * math.cos(i / 180 * math.pi) stop_y = y + stop_radius * math.sin(i / 180 * math.pi) self.figure.append(self.graph_elem.DrawLine((start_x, start_y), (stop_x, stop_y), color=line_color, width=line_width)) def move(self, delta_x, delta_y): """ Move ticks by delta x and delta y """ if False in Gauge.mapping(isinstance, [delta_x, delta_y], (int, float)): raise ValueError self.all[0] += delta_x self.all[1] += delta_y for figure in self.figure: self.graph_elem.MoveFigure(figure, delta_x, delta_y) """ Create Gauge All angles defined as count clockwise from negative x-axis. Should create instance of clock, pointer, minor tick and major tick first. """ def __init__(self, center=(0, 0), start_angle=0, stop_angle=180, major_tick_width=5, minor_tick_width=2,major_tick_start_radius=90, major_tick_stop_radius=100, major_tick_step=30, clock_radius=100, pointer_line_width=5, pointer_inner_radius=10, pointer_outer_radius=75, pointer_color='white', pointer_origin_color='black', pointer_outer_color='white', pointer_angle=0, degree=0, clock_color='white', major_tick_color='black', minor_tick_color='black', minor_tick_start_radius=90, minor_tick_stop_radius=100, graph_elem=None): self.clock = Gauge.Clock(start_angle=start_angle, stop_angle=stop_angle, fill_color=clock_color, radius=clock_radius, graph_elem=graph_elem) self.minor_tick = Gauge.Tick(start_angle=start_angle, stop_angle=stop_angle, line_width=minor_tick_width, line_color=minor_tick_color, start_radius=minor_tick_start_radius, stop_radius=minor_tick_stop_radius, graph_elem=graph_elem) self.major_tick = Gauge.Tick(start_angle=start_angle, stop_angle=stop_angle, line_width=major_tick_width, start_radius=major_tick_start_radius, stop_radius=major_tick_stop_radius, step=major_tick_step, line_color=major_tick_color, graph_elem=graph_elem) self.pointer = Gauge.Pointer(angle=pointer_angle, inner_radius=pointer_inner_radius, outer_radius=pointer_outer_radius, pointer_color=pointer_color, outer_color=pointer_outer_color, origin_color=pointer_origin_color, line_width=pointer_line_width, graph_elem=graph_elem) self.center_x, self.center_y = self.center = center self.degree = degree self.dx = self.dy = 1 def move(self, delta_x, delta_y): """ Move gauge to move all componenets in gauge. """ self.center_x, self.center_y =self.center = ( self.center_x+delta_x, self.center_y+delta_y) if self.clock: self.clock.move(delta_x, delta_y) if self.minor_tick: self.minor_tick.move(delta_x, delta_y) if self.major_tick: self.major_tick.move(delta_x, delta_y) if self.pointer: self.pointer.move(delta_x, delta_y) def change(self, degree=None, step=1): """ Rotation of pointer call it with degree and step to set initial options for rotation. Without any option to start rotation. """ if self.pointer: if degree != None: self.pointer.stop_degree = degree self.pointer.step = step if self.pointer.all[2] < degree else -step return True now = self.pointer.all[2] step = self.pointer.step new_degree = now + step if ((step > 0 and new_degree < self.pointer.stop_degree) or (step < 0 and new_degree > self.pointer.stop_degree)): self.pointer.new(degree=new_degree) return False else: self.pointer.new(degree=self.pointer.stop_degree) return True def human_size(bytes, units=(' bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB')): """ Returns a human readable string reprentation of bytes""" return str(bytes) + ' ' + units[0] if bytes < 1024 else human_size(bytes >> 10, units[1:]) def main(location): sg.theme(THEME) gsize = (100, 55) layout = [ [sg.T('RAM', font='Any 20', background_color='black')], [sg.Graph(gsize, (-gsize[0] // 2, 0), (gsize[0] // 2, gsize[1]), key='-Graph-')], [sg.T(size=(5, 1), font='Any 20', justification='c', background_color='black', k='-gauge VALUE-')], [sg.T(size=(8, 1), font='Any 14', justification='c', background_color='black', k='-RAM USED-')], ] window = sg.Window('CPU Usage Widget Square', layout, location=location, no_titlebar=True, grab_anywhere=True, margins=(0, 0), element_padding=(0, 0), alpha_channel=ALPHA, background_color='black', element_justification='c', finalize=True, right_click_menu=[[''], 'Exit']) gauge = Gauge(pointer_color=sg.theme_text_color(), clock_color=sg.theme_text_color(), major_tick_color=sg.theme_text_color(), minor_tick_color=sg.theme_input_background_color(), pointer_outer_color=sg.theme_text_color(), major_tick_start_radius=45, minor_tick_start_radius=45, minor_tick_stop_radius=50, major_tick_stop_radius=50, major_tick_step=30, clock_radius=50, pointer_line_width=3, pointer_inner_radius=10, pointer_outer_radius=50, graph_elem=window['-Graph-']) gauge.change(degree=0) while True: # Event Loop ram = psutil.virtual_memory() ram_percent = ram.percent if gauge.change(): new_angle = ram_percent*180/100 window['-gauge VALUE-'].update(f'{ram_percent}') window['-RAM USED-'].update(f'{human_size(ram.used)}') gauge.change(degree=new_angle, step=180) gauge.change() # ----------- update the graphics and text in the window ------------ # update the window, wait for a while, then check for exit event, values = window.read(timeout=UPDATE_FREQUENCY_MILLISECONDS) if event == sg.WIN_CLOSED or event == 'Exit': break window.close() if __name__ == '__main__': if len(sys.argv) > 1: location = sys.argv[1].split(',') location = (int(location[0]), int(location[1])) else: location = (None, None) main(location)