基于Python制作一款屏幕颜色提取器-编程学习网

1.使用效果

如下面动图所示，点击取色按钮后，将鼠标移动到想要取色的位置，等待两秒即可取色：

点击save color按钮可以将颜色存储到color library区域，同时如图所示，

! ! ! !红框内所有的方形元件其实都是按钮，点击后能获得颜色信息 ! ! ! !

信息格式为：(173, 189, 163) #ADBDA3 (48, 35, 189)

2.所需python包

PySide2
pyautogui
pyperclip
ctypes

from PySide2.QtWidgets import QApplication,QWidget,QLineEdit
from PySide2.QtWidgets import QLabel,QPushButton
from PySide2.QtGui import QIcon,QFont
from PySide2.QtCore import Qt

import sys
sys.path.append("...")

import time
import pyautogui as pag
import pyperclip
from ctypes import *

3.python小技巧

3.1控件数组

和matlab一样，python得控件也能构成数组，例如我在创建小颜色框时，是这么写的：

# 存储颜色框
for i in range(0,2):
    for j in range(0,10):
        storeColorBox=QPushButton(self)
        storeColorBox.setGeometry((0.04+0.093*j)*Width,(0.475+0.07*i)*Height,0.08*Width,0.06*Height)
        storeColorBox.setStyleSheet(self.SS_Color_Box)
        storeColorBox.setProperty("storeId",i*10+j)
        storeColorBox.setProperty("Color",'#FFFFFF')
        storeColorBox.clicked.connect(self.selectedStore)
        self.storeList.append(storeColorBox)

就是将各个颜色框存入了self.storeList这个数组，

想要例如想要调用第i个颜色框，就可以这么写：

storeBox=self.storeList[i]

3.2将控件作为属性

将控件控件作为属性赋给另一个控件

因为我们想要点击左侧标签时获得对应文本框内信息：

就可以这么写（举个例子）：

# 创建文本框
self.CB1=QLineEdit(self) 
self.CB1.setText("255,255,255") 
self.CB1.move(0.62*Width,0.03*Height)  
self.CB1.resize(0.35*Width,0.065*Height)
self.CB1.setFont(qf)
self.CB1.setStyleSheet(self.SS_Inf_Box)

# 创建标签
self.CL1=QPushButton(self)
self.CL1.setGeometry(0.448*Width,0.025*Height,0.14*Width,0.075*Height)
self.CL1.setStyleSheet(self.SS_Inf_Label)
self.CL1.setText("RGB")
self.CL1.setFont(qf)
self.CL1.setProperty('Children',self.CB1) # 把控件作为属性
self.CL1.clicked.connect(self.copyInf)# 与回调函数相连

然后我的回调函数是这样写的：

def copyInf(self):
    infLabel=self.sender()
    infBox=infLabel.property('Children') # 通过找到属性找到对应控件
    pyperclip.copy(infBox.text())

3.3怎样重设控件颜色

还是通过setStyleSheet设置嗷，不过把字符串部分应该放颜色的部分换成了要重设的颜色：

self.mainBox.setStyleSheet("QPushButton{background:"+self.curColor_HEX
        +";border: 3px solid rgb(150,150,150);border-radius:8px}")

3.4一些用到的字符串操作

字符串字母大写

STR=STR.upper()

字符串去掉空格

例如把(10, 50, 255)变为(10,50,255)

STR=STR.replace(" ", "")

字符串去掉两头括号

例如把(10,50,255)变为10,50,255

STR=STR[1:-1]

3.5鼠标位置像素颜色

如何获得当前鼠标位置像素颜色

import pyautogui as pag
from ctypes import *

x,y=pag.position()
RGB=get_color(x,y)

# 获取x,y位置像素颜色
def get_color(x, y):
    gdi32 = windll.gdi32
    user32 = windll.user32
    hdc = user32.GetDC(None)  # 获取颜色值
    pixel = gdi32.GetPixel(hdc, x, y)  # 提取RGB值
    r = pixel & 0x0000ff
    g = (pixel & 0x00ff00) >> 8
    b = pixel >> 16
    return [r, g, b]

3.6窗口始终置顶

self.setWindowFlags(Qt.WindowStaysOnTopHint)

3.7文本框不允许编辑但允许复制

用setFocusPolicy(Qt.NoFocus)，例如程序中：

self.CB1.setFocusPolicy(Qt.NoFocus)
self.CB2.setFocusPolicy(Qt.NoFocus)
self.CB3.setFocusPolicy(Qt.NoFocus)

4.完整代码

from PySide2.QtWidgets import QApplication,QWidget,QLineEdit
from PySide2.QtWidgets import QLabel,QPushButton
from PySide2.QtGui import QIcon,QFont
from PySide2.QtCore import Qt

import sys
sys.path.append("...")

import time
import pyautogui as pag
import pyperclip
from ctypes import *

# ===========================================================================================
# 相关函数：


# 获取x,y位置像素颜色
def get_color(x, y):
    gdi32 = windll.gdi32
    user32 = windll.user32
    hdc = user32.GetDC(None)  # 获取颜色值
    pixel = gdi32.GetPixel(hdc, x, y)  # 提取RGB值
    r = pixel & 0x0000ff
    g = (pixel & 0x00ff00) >> 8
    b = pixel >> 16
    return [r, g, b]


# HEX转RGB
def hex2rgb(hexcolor):
    '''HEX转RGB

    :param hexcolor: int or str
    :return: Tuple[int, int, int]

    >>> hex2rgb(16777215)
    (255, 255, 255)
    >>> hex2rgb('0xffffff')
    (255, 255, 255)
    '''
    hexcolor = int(hexcolor, base=16) if isinstance(hexcolor, str) else hexcolor
    rgb = ((hexcolor >> 16) & 0xff, (hexcolor >> 8) & 0xff, hexcolor & 0xff)
    return rgb

# RGB转HEX
def rgb2hex(r, g, b):
    color = "#"
    color += str(hex(r)).replace('x','0')[-2:]
    color += str(hex(g)).replace('x','0')[-2:]
    color += str(hex(b)).replace('x','0')[-2:]
    return color

# RGB转HSV
def rgb2hsv(r, g, b):
    r, g, b = r/255.0, g/255.0, b/255.0
    mx = max(r, g, b)
    mn = min(r, g, b)
    m = mx-mn
    if mx == mn:
        h = 0
    elif mx == r:
        if g >= b:
            h = ((g-b)/m)*60
        else:
            h = ((g-b)/m)*60 + 360
    elif mx == g:
        h = ((b-r)/m)*60 + 120
    elif mx == b:
        h = ((r-g)/m)*60 + 240
    if mx == 0:
        s = 0
    else:
        s = m/mx
    v = mx
    H = h / 2
    S = s * 255.0
    V = v * 255.0
    return (round(H), round(S), round(V))

# ===========================================================================================
# 窗口类：
class Window(QWidget):
    def __init__(self,Width=450,Height=600):
        super().__init__() 
        self.setWindowTitle("getScreenColor")
        self.setWindowFlags(Qt.WindowStaysOnTopHint) 
        self.Width=Width
        self.Height=Height

        # 样式表
        self.SS_bkg_Label="QLabel{background: rgb(220,220,220);color:rgb(62,62,62);border-radius:8px}"
        self.SS_Inf_Label="QPushButton{background: rgb(79,148,204);color:rgb(240,240,240);border-radius:8px}"
        self.SS_Inf_Box="QLineEdit{border-radius:3px;border: 2px solid rgb(149,179,215);color:rgb(92,92,92)}"
        self.SS_Main_Box="QPushButton{background: #FFFFFF;border: 3px solid rgb(150,150,150);border-radius:8px}"
        self.SS_Color_Box="QPushButton{background: #FFFFFF;border: 2px solid rgb(150,150,150);border-radius:3px}"
        self.SS_btn_1="QPushButton{background: rgb(214,219,233);color:rgb(82,82,82)}"
        self.SS_btn_2="QPushButton{background: rgb(225,235,205);color:rgb(82,82,82)}"
        self.SS_btn_3="QPushButton{background: rgb(232,191,190);color:rgb(82,82,82)}"

        # 该类私有变量或属性
        self.defaultColor=['#58827E','#144853','#4C6756','#849E77','#ADBDA3',
                           '#6B1B1E','#A94047','#E05E60','#F8A2AF','#E4CEDB',
                           '#B0A087','#7F877C','#C7C7BB','#D4C7BE','#E3E4DF',
                           '#C63866','#FE676E','#FD8F52','#FFBF73','#FFDCA2',
                           '#7292B8','#769EB8','#B4C5D7','#C5D5EC','#D9E0EA',
                           '#681F71','#7E0D5D','#6E57A5','#B589BE','#C993B7',
                           '#3978A4','#81AAAE','#EBCFC4','#FDB8A8','#E3929B','#7D7294']
        self.curBoxId=0
        self.curColor_RGB=[255,255,255]
        self.curColor_HEX='#FFFFFF'
        self.curColor_HSV=[0,0,255]
        self.storeList=[]
        self.defaultList=[]



        # 框架构造函数调用
        self.setSize()
        self.partition()
        self.setInfBox()
        self.setMainBox()
        self.setBtn()
        self.setIcon()
        self.setColorBox()
        

    # ================================================================================================
    # 颜色框回调函数部分：
    def selectedMain(self):
        tColor_HEX=self.curColor_HEX
        tColor_RGB=hex2rgb('0x'+tColor_HEX[1:])
        tColor_HSV=rgb2hsv(tColor_RGB[0], tColor_RGB[1], tColor_RGB[2])
        pyperclip.copy(str(tColor_RGB)+' '+tColor_HEX+' '+str(tColor_HSV)) 
        print(str(tColor_RGB)+' '+tColor_HEX+' '+str(tColor_HSV))

    def selectedStore(self):
        storeBox=self.sender()
        tColor_HEX=storeBox.property("Color")
        tColor_RGB=hex2rgb('0x'+tColor_HEX[1:])
        tColor_HSV=rgb2hsv(tColor_RGB[0], tColor_RGB[1], tColor_RGB[2])
        pyperclip.copy(str(tColor_RGB)+' '+tColor_HEX+' '+str(tColor_HSV)) 
        print(str(tColor_RGB)+' '+tColor_HEX+' '+str(tColor_HSV))

    def selectedDefault(self):
        defaultBox=self.sender()
        tNum=defaultBox.property("defaultId")
        tColor_HEX=self.defaultColor[tNum]
        tColor_RGB=hex2rgb('0x'+tColor_HEX[1:])
        tColor_HSV=rgb2hsv(tColor_RGB[0], tColor_RGB[1], tColor_RGB[2])
        pyperclip.copy(str(tColor_RGB)+' '+tColor_HEX+' '+str(tColor_HSV)) 
        print(str(tColor_RGB)+' '+tColor_HEX+' '+str(tColor_HSV))
    # ------------------------------------------------------------------------------------------------
    # 颜色信息标签回调
    def copyInf(self):
        infLabel=self.sender()
        infBox=infLabel.property('Children')
        pyperclip.copy(infBox.text())
        print(infBox.text())
    
    # ------------------------------------------------------------------------------------------------
    # 按钮回调函数部分：
    def getColor(self):
        time.sleep(2)
        x,y=pag.position()
        self.curColor_RGB=get_color(x,y)
        self.curColor_HSV=rgb2hsv(self.curColor_RGB[0], self.curColor_RGB[1], self.curColor_RGB[2])
        self.curColor_HEX=rgb2hex(self.curColor_RGB[0], self.curColor_RGB[1], self.curColor_RGB[2]).upper()

        RGB_STR=str(self.curColor_RGB).replace(" ", "")[1:-1]
        HSV_STR=str(self.curColor_HSV).replace(" ", "")[1:-1]
        self.CB1.setText(RGB_STR) 
        self.CB2.setText(self.curColor_HEX)
        self.CB3.setText(HSV_STR) 
        self.mainBox.setStyleSheet("QPushButton{background:"+self.curColor_HEX
        +";border: 3px solid rgb(150,150,150);border-radius:8px}")
    def saveColor(self):
        if self.curBoxId<20:
            tempBox=self.storeList[self.curBoxId]
            tempBox.setProperty("Color",self.curColor_HEX)
            tempBox.setStyleSheet("QPushButton{background:"+self.curColor_HEX
            +";border: 2px solid rgb(150,150,150);border-radius:3px}")
            self.curBoxId+=1
    def deleteColor(self):
        if self.curBoxId>0:
            self.curBoxId-=1
            tempBox=self.storeList[self.curBoxId]
            tempBox.setProperty("Color",'#FFFFFF')
            tempBox.setStyleSheet(self.SS_Color_Box)

    # ================================================================================================
    # 框架构造函数部分：
    def setSize(self):# 调整框架大小
        self.setGeometry(80,80,self.Width,self.Height)
        self.setMaximumSize(self.Width,self.Height)
        self.setMinimumSize(self.Width,self.Height)

    def setIcon(self):# 设置图标
        appIcon=QIcon("ICON.ico")
        self.setWindowIcon(appIcon)

    def partition(self):# 各部分划分
        Width=self.Width
        Height=self.Height
        qf=QFont()
        qf.setBold(True)
        qf.setPointSize(12)
        qf.setFamily("Cambria")   
        # --part1--当前颜色显示框背景-----
        self.bkgLabel1=QLabel(self)
        self.bkgLabel1.setGeometry(0.024*Width,0.015*Height,0.4*Width,0.3*Height)
        self.bkgLabel1.setStyleSheet(self.SS_bkg_Label)
        # --part2--当前颜色信息背景-----
        self.bkgLabel2=QLabel(self)
        self.bkgLabel2.setGeometry(0.448*Width,0.015*Height,0.528*Width,0.3*Height)
        self.bkgLabel2.setStyleSheet("QLabel{background: rgb(235,235,235);border-radius:8px}")
        # --part3--颜色存储库背景-----
        self.bkgLabel3=QLabel(self)
        self.bkgLabel3.setGeometry(0.024*Width,0.41*Height,0.952*Width,0.205*Height)
        self.bkgLabel3.setStyleSheet(self.SS_bkg_Label)
        self.bkgLabel3_title=QLabel(self)
        self.bkgLabel3_title.setGeometry(0.038*Width,0.415*Height,0.4*Width,0.05*Height)
        self.bkgLabel3_title.setStyleSheet(self.SS_bkg_Label)
        self.bkgLabel3_title.setText("Color Library") 
        self.bkgLabel3_title.setFont(qf)
        # --part4--预设颜色库背景-----
        self.bkgLabel4=QLabel(self)
        self.bkgLabel4.setGeometry(0.024*Width,0.63*Height,0.952*Width,0.355*Height)
        self.bkgLabel4.setStyleSheet(self.SS_bkg_Label)
        self.bkgLabel4_title=QLabel(self)
        self.bkgLabel4_title.setGeometry(0.038*Width,0.635*Height,0.8*Width,0.05*Height)
        self.bkgLabel4_title.setStyleSheet(self.SS_bkg_Label)
        self.bkgLabel4_title.setText("Color Library(default)") 
        self.bkgLabel4_title.setFont(qf)


    def setInfBox(self):# 设置信息显示框
        Width=self.Width
        Height=self.Height
        # 字体设置
        qf=QFont()
        qf.setBold(True)
        qf.setPointSize(12)
        qf.setFamily("Cambria")   
        # 绘制颜色信息框
        qf.setPointSize(10)
        self.CB1=QLineEdit(self) 
        self.CB1.setText("255,255,255") 
        self.CB1.move(0.62*Width,0.03*Height)  
        self.CB1.resize(0.35*Width,0.065*Height)
        self.CB1.setFont(qf)
        self.CB1.setStyleSheet(self.SS_Inf_Box)
        #
        self.CB2=QLineEdit(self) 
        self.CB2.setText("#FFFFFF") 
        self.CB2.move(0.62*Width,0.13*Height)  
        self.CB2.resize(0.35*Width,0.065*Height)
        self.CB2.setFont(qf)
        self.CB2.setStyleSheet(self.SS_Inf_Box)
        #
        self.CB3=QLineEdit(self) 
        self.CB3.setText("0,0,255") 
        self.CB3.move(0.62*Width,0.23*Height)  
        self.CB3.resize(0.35*Width,0.065*Height)
        self.CB3.setFont(qf)
        self.CB3.setStyleSheet(self.SS_Inf_Box)
        #
        self.CB1.setFocusPolicy(Qt.NoFocus)
        self.CB2.setFocusPolicy(Qt.NoFocus)
        self.CB3.setFocusPolicy(Qt.NoFocus)
        # 绘制颜色信息标签
        self.CL1=QPushButton(self)
        self.CL1.setGeometry(0.448*Width,0.025*Height,0.14*Width,0.075*Height)
        self.CL1.setStyleSheet(self.SS_Inf_Label)
        self.CL1.setText("RGB")
        self.CL1.setFont(qf)
        self.CL1.setProperty('Children',self.CB1)
        self.CL1.clicked.connect(self.copyInf)
        #
        self.CL2=QPushButton(self)
        self.CL2.setGeometry(0.448*Width,0.125*Height,0.14*Width,0.075*Height)
        self.CL2.setStyleSheet(self.SS_Inf_Label)
        self.CL2.setText("HEX")
        self.CL2.setFont(qf)
        self.CL2.setProperty('Children',self.CB2)
        self.CL2.clicked.connect(self.copyInf)
        #
        self.CL3=QPushButton(self)
        self.CL3.setGeometry(0.448*Width,0.225*Height,0.14*Width,0.075*Height)
        self.CL3.setStyleSheet(self.SS_Inf_Label)
        self.CL3.setText("HSV")
        self.CL3.setFont(qf)
        self.CL3.setProperty('Children',self.CB3)
        self.CL3.clicked.connect(self.copyInf)


    def setMainBox(self):# 设置其他label
        Width=self.Width
        Height=self.Height
        # 左上角当前颜色显示框
        self.mainBox=QPushButton(self)
        self.mainBox.setGeometry(0.04*Width,0.025*Height,0.368*Width,0.28*Height)
        self.mainBox.setStyleSheet(self.SS_Main_Box)
        self.mainBox.clicked.connect(self.selectedMain)

    def setBtn(self):# 设置按钮
        Width=self.Width
        Height=self.Height
        # 按钮字体
        qf=QFont()
        qf.setBold(True)
        qf.setPointSize(10)
        qf.setFamily("Cambria")
        # 获取颜色按钮
        self.bnt1=QPushButton(self)
        self.bnt1.setGeometry(0.024*Width,0.33*Height,0.4*Width,0.06*Height)
        self.bnt1.setStyleSheet(self.SS_btn_1)
        self.bnt1.setText("Get Screen Color")
        self.bnt1.setFont(qf)
        self.bnt1.clicked.connect(self.getColor)
        # 保存颜色按钮
        self.bnt2=QPushButton(self)
        self.bnt2.setGeometry(0.444*Width,0.33*Height,0.26*Width,0.06*Height)
        self.bnt2.setStyleSheet(self.SS_btn_1)
        self.bnt2.setText("Save Color")
        self.bnt2.setFont(qf)
        self.bnt2.clicked.connect(self.saveColor)
        # 删除颜色按钮
        self.bnt3=QPushButton(self)
        self.bnt3.setGeometry(0.724*Width,0.33*Height,0.26*Width,0.06*Height)
        self.bnt3.setStyleSheet(self.SS_btn_3)
        self.bnt3.setText("Delete Last")
        self.bnt3.setFont(qf)
        self.bnt3.clicked.connect(self.deleteColor)

    def setColorBox(self):# 绘制存储颜色及预设颜色框
        Width=self.Width
        Height=self.Height
        # 存储颜色框
        for i in range(0,2):
            for j in range(0,10):
                storeColorBox=QPushButton(self)
                storeColorBox.setGeometry((0.04+0.093*j)*Width,(0.475+0.07*i)*Height,0.08*Width,0.06*Height)
                storeColorBox.setStyleSheet(self.SS_Color_Box)
                storeColorBox.setProperty("storeId",i*10+j)
                storeColorBox.setProperty("Color",'#FFFFFF')
                storeColorBox.clicked.connect(self.selectedStore)
                self.storeList.append(storeColorBox)

        # 预设颜色框
        for i in range(0,4):
            for j in range(0,10):
                if i*10+j<36:
                    defaultColorBox=QPushButton(self)
                    defaultColorBox.setGeometry((0.04+0.093*j)*Width,(0.7+0.07*i)*Height,0.08*Width,0.06*Height)
                    defaultColorBox.setStyleSheet("QPushButton{background: "
                    +self.defaultColor[i*10+j]+";border: 2px solid rgb(150,150,150);border-radius:3px}")
                    defaultColorBox.setProperty("defaultId",i*10+j)
                    defaultColorBox.clicked.connect(self.selectedDefault)
                    self.defaultList.append(storeColorBox)

# ===========================================================================================
# 函数调用：
myapp = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(myapp.exec_())

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