Python 一步一步教你用pyglet仿制鸿蒙系统里的时钟

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目录

鸿蒙时钟

1. 绘制圆盘

2. 创建表类

3. 绘制刻度

4. 刻度数值

5. 添加指针

6. 转动指针

7. 联动时间

8. 时钟走动

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鸿蒙时钟

本篇将用python pyglet库复刻华为手机鸿蒙系统闹钟程序的时钟，先在上图中抓取出时分秒针及刻度、表盘的颜色RGB值：

bHour = (42, 43, 48, 255)
bMinute = (70, 71, 75, 255)
rSecond = (240, 70, 20, 255)
gScale = 215, 220, 230
wBackground = 248, 250, 252

1. 绘制圆盘

首先要画一圆Circle，并用直线Line等分成60份。

        self.circle = pyglet.shapes.Circle(x, y, R, color=wBackground, batch=batch)
        self.scales = [pyglet.shapes.Line(x, y, x+R*cos(i*Pi/30), y+R*sin(i*Pi/30),
                            width=2, color=gScales, batch=batch) for i in range(60)]

直线除圆心外的另一端点的坐标计算公式，如下图所示：

代码：

import pygletfrom math import pi, sin, coswindow = pyglet.window.Window(800, 500, caption='圆盘')pyglet.gl.glClearColor(1, 1, 1, 1)batch = pyglet.graphics.Batch()R = 200wBackground = 248, 250, 252gScales = 215, 220, 230class Watch:    def __init__(self, x, y):        self.circle = pyglet.shapes.Circle(x, y, R, color=wBackground, batch=batch)        self.scales = [pyglet.shapes.Line(x, y, x+R*cos(i*pi/30), y+R*sin(i*pi/30),                            width=2, color=gScales, batch=batch) for i in range(60)]@window.eventdef on_draw():    window.clear()    batch.draw()watch = Watch(window.width/2, window.height/2)pyglet.app.run()

2. 创建表类

改造这个Watch类，可设置圆心和半径，并让它成为pyglet.window.Window的子类。

import pygletfrom math import sin, cos, piwBackground = (248, 250, 252, 255)gScales = (215, 220, 230, 255)class Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='圆盘'):         super().__init__(width, height, caption=caption)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R,                          color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x, y, x+R*cos(i*pi/30), y+R*sin(i*pi/30),                          width=2, color=gScales, batch=self.batch) for i in range(60)]    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(500, 300, 150)watch.run()

3. 绘制刻度

扩大圆面并缩短和加粗直线，表盘和刻度的大致轮廓就出现了。

代码： 

import pygletfrom math import sin, cos, piwBackground = (248, 250, 252, 255)gScales = (215, 220, 230, 255)class Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='刻度'):         super().__init__(width, height, caption=caption)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R*1.05,                          color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x+R*cos(i*pi/30), y+R*sin(i*pi/30),                        x+R*0.95*cos(i*pi/30), y+0.95*R*sin(i*pi/30),                        width=3, color=gScales, batch=self.batch) for i in range(60)]        for i, scale in enumerate(self.scales):            if i%5==0:                scale.width, scale.x2, scale.y2 = 5, x+R*0.92*cos(i*pi/30), y+0.92*R*sin(i*pi/30)    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(400, 250)watch.run()

4. 刻度数值

在整点的刻度值边上用标签标注上1~12的数字。

self.labels = [pyglet.text.Label(str((2-i)%12+1), font_size=24, color=(0,0,0,255),
                        x=x+R*0.82*cos(i*pi/6), y=y+0.82*R*sin(i*pi/6)+5, anchor_x='center', 
                        anchor_y='center', batch=self.batch) for i in range(12)]

代码：

import pygletfrom math import sin, cos, piwBackground = (248, 250, 252, 255)gScales = (215, 220, 230, 255)rSecond = (240, 70, 20, 255)class Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='指针'):         super().__init__(width, height, caption=caption)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R*1.05, color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x+R*cos(i*pi/30), y+R*sin(i*pi/30),                        x+R*0.95*cos(i*pi/30), y+0.95*R*sin(i*pi/30),                        width=3, color=gScales, batch=self.batch) for i in range(60)]        for i,scale in enumerate(self.scales):            if i%5==0:                scale.width, scale.x2, scale.y2 = 5, x+R*0.92*cos(i*pi/30), y+0.92*R*sin(i*pi/30)        self.labels = [pyglet.text.Label(str((2-i)%12+1), font_size=R*0.12, color=(0,0,0,255),                        x=x+R*0.82*cos(i*pi/6), y=y+0.82*R*sin(i*pi/6)-R*0.06, anchor_x='center',                        batch=self.batch) for i in range(12)]    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(400, 250)watch.run()

5. 添加指针

时、分、秒针，用三个圆三条直线来表示。

        self.circle1 = pyglet.shapes.Circle(x, y, R*0.08, color=bHour)
        self.hour = pyglet.shapes.Line(x, y, x+R*0.7, y, width=9, color=bHour)
        self.minute = pyglet.shapes.Line(x, y, x+R*0.9, y, width=7, color=bMinute)
        self.second = pyglet.shapes.Line(x, y, x+R*1.1, y, width=5, color=rSecond)
        self.circle2 = pyglet.shapes.Circle(x, y, R*0.05, color=rSecond)
        self.circle3 = pyglet.shapes.Circle(x, y, R*0.02, color=wWhite)

不用担心秒针长过表盘圆面，转动前会作“移动”处理。

代码：

import pygletfrom math import sin, cos, piwBackground = (248, 250, 252, 255)gScales = (215, 220, 230, 255)rSecond = (240, 70, 20, 255)bMinute = (70, 71, 75, 255)bHour   = (42, 43, 48, 255)wWhite  = (255, 255, 255, 255)class Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='指针'):         super().__init__(width, height, caption=caption)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R*1.05, color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x+R*cos(i*pi/30), y+R*sin(i*pi/30),                        x+R*0.95*cos(i*pi/30), y+0.95*R*sin(i*pi/30),                        width=3, color=gScales, batch=self.batch) for i in range(60)]        for i,scale in enumerate(self.scales):            if i%5==0:                scale.width, scale.x2, scale.y2 = 5, x+R*0.92*cos(i*pi/30), y+0.92*R*sin(i*pi/30)        self.labels = [pyglet.text.Label(str((2-i)%12+1), font_size=R*0.12, color=(0,0,0,255),                        x=x+R*0.82*cos(i*pi/6), y=y+0.82*R*sin(i*pi/6)-R*0.06, anchor_x='center',                        batch=self.batch) for i in range(12)]        self.circle1 = pyglet.shapes.Circle(x, y, R*0.08, color=bHour, batch=self.batch)        self.hour = pyglet.shapes.Line(x, y, x+R*0.7, y, width=9, color=bHour, batch=self.batch)        self.minute = pyglet.shapes.Line(x, y, x+R*0.9, y, width=7, color=bMinute, batch=self.batch)        self.second = pyglet.shapes.Line(x, y, x+R*1.1, y, width=5, color=rSecond, batch=self.batch)        self.circle2 = pyglet.shapes.Circle(x, y, R*0.05, color=rSecond, batch=self.batch)        self.circle3 = pyglet.shapes.Circle(x, y, R*0.02, color=wWhite, batch=self.batch)    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(400, 250)watch.run()

6. 转动指针

时、分、秒针的转动运用Line控件的旋转属性.rotation，这种方法要比修改端点坐标要方便。

默认的旋转中心是直线的左端点，属性.anchor_position可以修改中心坐标。

        self.second.anchor_position = (R*0.1, 0)
        self.second.rotation = 210
        self.minute.rotation = 24
        self.hour.rotation = 160

代码：

import pygletfrom math import sin, cos, piwBackground = (248, 250, 252, 255)gScales = (215, 220, 230, 255)rSecond = (240, 70, 20, 255)bMinute = (70, 71, 75, 255)bHour   = (42, 43, 48, 255)wWhite  = (255, 255, 255, 255)class Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='指针'):         super().__init__(width, height, caption=caption)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R*1.05, color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x+R*cos(i*pi/30), y+R*sin(i*pi/30),                        x+R*0.95*cos(i*pi/30), y+0.95*R*sin(i*pi/30),                        width=3, color=gScales, batch=self.batch) for i in range(60)]        for i,scale in enumerate(self.scales):            if i%5==0:                scale.width, scale.x2, scale.y2 = 5, x+R*0.92*cos(i*pi/30), y+0.92*R*sin(i*pi/30)        self.labels = [pyglet.text.Label(str((2-i)%12+1), font_size=R*0.12, color=(0,0,0,255),                        x=x+R*0.82*cos(i*pi/6), y=y+0.82*R*sin(i*pi/6)-R*0.06, anchor_x='center',                        batch=self.batch) for i in range(12)]        self.circle1 = pyglet.shapes.Circle(x, y, R*0.08, color=bHour, batch=self.batch)        self.hour = pyglet.shapes.Line(x, y, x+R*0.7, y, width=9, color=bHour, batch=self.batch)        self.minute = pyglet.shapes.Line(x, y, x+R*0.9, y, width=7, color=bMinute, batch=self.batch)        self.second = pyglet.shapes.Line(x, y, x+R*1.1, y, width=5, color=rSecond, batch=self.batch)        self.circle2 = pyglet.shapes.Circle(x, y, R*0.05, color=rSecond, batch=self.batch)        self.circle3 = pyglet.shapes.Circle(x, y, R*0.02, color=wWhite, batch=self.batch)        self.second.anchor_position = (R*0.1, 0)        self.second.rotation = 210        self.minute.rotation = 24        self.hour.rotation = 160    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(400, 250)watch.run()

7. 联动时间

联动系统时钟，使用datetime.now()获取当前时间的时、分、秒的值。

        now = datetime.now()
        h, m, s = now.hour, now.minute, now.second
        self.second.rotation = -90 + s*6
        self.minute.rotation = -90 + m*6 + s/10
        self.hour.rotation = -90 + h%12*30 + m/2

代码：

import pygletfrom math import sin, cos, pifrom datetime import datetimewBackground = (248, 250, 252, 255)gScales = (215, 220, 230, 255)rSecond = (240, 70, 20, 255)bMinute = (70, 71, 75, 255)bHour   = (42, 43, 48, 255)wWhite  = (255, 255, 255, 255)class Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='指针'):         super().__init__(width, height, caption=caption)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R*1.05, color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x+R*cos(i*pi/30), y+R*sin(i*pi/30),                        x+R*0.95*cos(i*pi/30), y+0.95*R*sin(i*pi/30),                        width=3, color=gScales, batch=self.batch) for i in range(60)]        for i,scale in enumerate(self.scales):            if i%5==0:                scale.width, scale.x2, scale.y2 = 5, x+R*0.92*cos(i*pi/30), y+0.92*R*sin(i*pi/30)        self.labels = [pyglet.text.Label(str((2-i)%12+1), font_size=R*0.12, color=(0,0,0,255),                        x=x+R*0.82*cos(i*pi/6), y=y+0.82*R*sin(i*pi/6)-R*0.06, anchor_x='center',                        batch=self.batch) for i in range(12)]        self.circle1 = pyglet.shapes.Circle(x, y, R*0.08, color=bHour, batch=self.batch)        self.hour = pyglet.shapes.Line(x, y, x+R*0.7, y, width=9, color=bHour, batch=self.batch)        self.minute = pyglet.shapes.Line(x, y, x+R*0.9, y, width=7, color=bMinute, batch=self.batch)        self.second = pyglet.shapes.Line(x, y, x+R*1.1, y, width=5, color=rSecond, batch=self.batch)        self.circle2 = pyglet.shapes.Circle(x, y, R*0.05, color=rSecond, batch=self.batch)        self.circle3 = pyglet.shapes.Circle(x, y, R*0.02, color=wWhite, batch=self.batch)        self.second.anchor_position = (R*0.1, 0)        self.update()    def update(self):        now = datetime.now()        h, m, s = now.hour, now.minute, now.second        self.second.rotation = -90 + s*6        self.minute.rotation = -90 + m*6 + s/10        self.hour.rotation = -90 + h%12*30 + m/2    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(400, 250)watch.run()

8. 运行时钟

使用pyglet.clock.schedule_interval(self.update, 0.2)每秒更新5次。

总得来说，本次复刻比较完美，但直线控件在非水平或垂直状态，特别是小夹角时锯齿很严重。

完整代码：

import pygletfrom math import sin, cos, pifrom datetime import datetimeclass Watch(pyglet.window.Window):      def __init__(self, x, y, R=200, width=800, height=500, caption='时钟'):         super().__init__(width, height, caption=caption)        wBackground = (248, 250, 252, 255)        gScales = (215, 220, 230, 255)        rSecond = (240, 70, 20, 255)        bMinute = (70, 71, 75, 255)        bHour   = (42, 43, 48, 255)        wWhite  = (255, 255, 255, 255)        pyglet.gl.glClearColor(1, 1, 1, 1)        self.batch = pyglet.graphics.Batch()        self.circle = pyglet.shapes.Circle(x, y, R*1.05, color=wBackground, batch=self.batch)        self.scales = [pyglet.shapes.Line(x+R*cos(i*pi/30), y+R*sin(i*pi/30),                        x+R*0.95*cos(i*pi/30), y+0.95*R*sin(i*pi/30),                        width=3, color=gScales, batch=self.batch) for i in range(60)]        for i,scale in enumerate(self.scales):            if i%5==0:                scale.width, scale.x2, scale.y2 = 5, x+R*0.92*cos(i*pi/30), y+0.92*R*sin(i*pi/30)        self.labels = [pyglet.text.Label(str((2-i)%12+1), font_size=R*0.12, color=(0,0,0,255),                        x=x+R*0.82*cos(i*pi/6), y=y+0.82*R*sin(i*pi/6)-R*0.06, anchor_x='center',                        batch=self.batch) for i in range(12)]        self.circle1 = pyglet.shapes.Circle(x, y, R*0.08, color=bHour, batch=self.batch)        self.hour = pyglet.shapes.Line(x, y, x+R*0.7, y, width=9, color=bHour, batch=self.batch)        self.minute = pyglet.shapes.Line(x, y, x+R*0.9, y, width=7, color=bMinute, batch=self.batch)        self.second = pyglet.shapes.Line(x, y, x+R*1.1, y, width=5, color=rSecond, batch=self.batch)        self.circle2 = pyglet.shapes.Circle(x, y, R*0.05, color=rSecond, batch=self.batch)        self.circle3 = pyglet.shapes.Circle(x, y, R*0.02, color=wWhite, batch=self.batch)        self.second.anchor_position = (R*0.1, 0)        self.update(self.event)        pyglet.clock.schedule_interval(self.update, 0.2)    def update(self, event):        now = datetime.now()        h, m, s = now.hour, now.minute, now.second        self.second.rotation = -90 + s*6        self.minute.rotation = -90 + m*6 + s/10        self.hour.rotation = -90 + h%12*30 + m/2    def on_draw(self):        self.clear()        self.batch.draw()    def run(self):        pyglet.app.run()watch = Watch(400, 250)watch.run()

完

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