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QT5_Project/Shared_CODE/DialogModifyValue.py

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+import sys
+import os
+from PyQt5.QtWidgets import QApplication, QDialog, QLineEdit, QLabel, QWidget, QPushButton, QMessageBox, QComboBox, QDialogButtonBox, QShortcut
+from PyQt5 import uic
+from PyQt5.QtGui import QKeySequence
+from PyQt5.QtCore import Qt, QEvent, QObject, QTimer
+
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
+ui_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '../Shared_UI'))
+ui_file_path = os.path.join(ui_path, "DialogModifyValue.ui")
+
+def modify_string(string, index, new_char):
+    string_list = list(string)
+    string_list[index] = new_char
+    modified_string = ''.join(string_list)
+    return modified_string
+
+def chr_adjust(old_chr, dif : int) :
+    new_chr = old_chr
+    if old_chr == '+':
+        new_chr = '-'
+    elif old_chr == '-':
+        new_chr = '+'
+    elif dif > 0:
+        new_chr    =  chr(ord(old_chr) + 1)
+        if new_chr > '9' :
+            new_chr = '0' 
+    else :
+        new_chr    =  chr(ord(old_chr) - 1)
+        if new_chr < '0' :
+            new_chr = '9'
+    return new_chr
+
+
+class DialogModifyValue(QDialog):
+    def __init__(self, main_window, parent=None):
+        super(DialogModifyValue, self).__init__(parent)
+        # Load UI file
+        uic.loadUi(ui_file_path, self)        
+        
+        self.value_origin    = 1000.3
+        self.value_modify    = 1000.3
+        self.format          = "%05.1f"
+        self.scale           = 1.0
+        self.offset          = 0.0
+        self.select_bit      = 0
+        self.main_window     = main_window
+
+        self.setWindowTitle("参数修改")
+        self.setWindowFlag(Qt.FramelessWindowHint)
+        ok_button = self.buttonBox.button(QDialogButtonBox.Ok)
+        if ok_button is None:
+            pass
+        else:
+            ok_button.setText('')
+        Cancel_button = self.buttonBox.button(QDialogButtonBox.Cancel)
+        if Cancel_button is None:
+            pass
+        else:
+            Cancel_button.setText('')
+        
+        self.buttonBox.clicked.connect(self.dialog_button_ok_clicked)
+
+        modify_value = self.value_origin * self.scale + self.offset
+        self.update_modify_info(self.format, modify_value, "缺省参数修改", self.offset)
+        
+        #让定时器周期刷修改字符串, 防止出现焦点切换时选中消失的情况
+        self.timer = QTimer(self)
+        self.timer.timeout.connect(self.timeout_modify_string_refresh)
+        self.timer.start(100)
+    
+        #定义4个快捷键, Key_Enter, Key_Escape经常被各类程序模块使用, 用Key_End, 与Key_Home来代替
+        QShortcut(QKeySequence(Qt.Key_Up), self, activated=self.key_increase_parameter)
+        QShortcut(QKeySequence(Qt.Key_Down), self, activated=self.key_decrease_parameter)
+        QShortcut(QKeySequence(Qt.Key_PageDown), self, activated=self.key_enter_process)
+        QShortcut(QKeySequence(Qt.Key_PageUp), self, activated=self.key_escape_process)
+        QShortcut(QKeySequence(Qt.Key_End), self, activated=self.key_enter_process)
+        QShortcut(QKeySequence(Qt.Key_Home), self, activated=self.key_escape_process)
+
+        home_button = self.findChild(QPushButton, "KEY_HOME")
+        if home_button:
+            home_button.clicked.connect(self.key_escape_process)
+
+        end_button = self.findChild(QPushButton, "KEY_END")
+        if end_button:
+            end_button.clicked.connect(self.key_enter_process)
+
+        up_button = self.findChild(QPushButton, "KEY_UP")
+        if up_button:
+            up_button.clicked.connect(self.key_increase_parameter)
+
+        down_button = self.findChild(QPushButton, "KEY_DOWN")
+        if down_button:
+            down_button.clicked.connect(self.key_decrease_parameter)
+    @property
+    def value(self):
+        line_modify : QLineEdit = self.lineEdit
+        text : str = line_modify.text()
+        return text
+    
+    def timeout_modify_string_refresh(self) :
+        line_modify : QLineEdit = self.lineEdit
+        modify_str : str = line_modify.text()
+        self.update_modify_string(modify_str)
+
+    def update_modify_info(self, format_str, value, caption : str, offset = 0) :
+        self.value_origin    = value
+        self.format          = format_str 
+        self.offset          = offset
+        if hasattr(self, "label") :
+            label : QLabel = self.label
+            label.setText(caption)
+        if self.format != "" :
+            modify_str           = self.format%(value)
+        else :
+            modify_str           = str(value)
+        self.update_modify_string(modify_str)
+        
+    def update_modify_string(self, modify_str : str) :
+        line_modify : QLineEdit = self.lineEdit
+        line_modify.setText(modify_str)
+
+        if self.select_bit < len(modify_str) :
+            if modify_str[self.select_bit] == ' ':
+               self.key_enter_process()
+
+        # 设置选择从第self.select_bit个字符开始，长度为1
+        line_modify.setSelection(self.select_bit, 1)
+        
+    def key_increase_parameter(self):
+        line_modify : QLineEdit = self.lineEdit
+        text : str = line_modify.text()
+        if self.select_bit < len(text) :
+            old_chr    =  text[self.select_bit]
+            new_chr    =  chr_adjust(old_chr, 1)
+            new_modify_text = modify_string(text, self.select_bit, new_chr)
+            self.update_modify_string(new_modify_text)
+        
+    def key_decrease_parameter(self):
+        line_modify : QLineEdit = self.lineEdit
+        text : str = line_modify.text()
+        if self.select_bit < len(text) :
+            old_chr    =  text[self.select_bit]
+            new_chr    =  chr_adjust(old_chr, -1)
+            new_modify_text = modify_string(text, self.select_bit, new_chr)
+            self.update_modify_string(new_modify_text)
+
+    def key_enter_process(self):
+        line_modify : QLineEdit = self.lineEdit
+        text : str = line_modify.text()
+
+        if self.select_bit < len(text) - 1:
+            self.select_bit += 1
+            if not str.isdigit(text[self.select_bit]) :
+                self.key_enter_process()
+            else :
+                self.update_modify_string(text)
+        else :
+            self.buttonBox.button(QDialogButtonBox.Ok).click()
+
+    def key_escape_process(self):
+        self.buttonBox.button(QDialogButtonBox.Cancel).click()
+
+    def dialog_button_ok_clicked(self, button):
+        if button == self.buttonBox.button(QDialogButtonBox.Ok) :
+            line_modify : QLineEdit = self.lineEdit
+            text : str = line_modify.text()
+            self.value_modify = float(text)
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    dialog = DialogModifyValue()    
+    dialog.show()
+
+    sys.exit(dialog.exec_())