eric6/UI/NotificationWidget.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
169e65a6787c
parent 7997
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child 8143
2c730d5fd177
permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2012 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a Notification widget.
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8 """
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9
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10 from enum import Enum
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11
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12 from PyQt5.QtCore import Qt, QTimer, QPoint
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13 from PyQt5.QtWidgets import QFrame, QWidget, QVBoxLayout
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14
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15 from .Ui_NotificationFrame import Ui_NotificationFrame
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16
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17 import Globals
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18 import Preferences
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19 import UI.PixmapCache
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20
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21
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22 class NotificationTypes(Enum):
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23 """
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24 Class implementing the notification types.
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25 """
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26 Information = 0
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27 Warning = 1 # __IGNORE_WARNING_M131__
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28 Critical = 2
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29 Other = 99
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30
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31
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32 class NotificationFrame(QFrame, Ui_NotificationFrame):
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33 """
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34 Class implementing a Notification widget.
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35 """
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36 NotificationStyleSheetTemplate = "color:{0};background-color:{1};"
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37
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38 def __init__(self, icon, heading, text,
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39 kind=NotificationTypes.Information, parent=None):
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40 """
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41 Constructor
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42
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43 @param icon icon to be used
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44 @type QPixmap
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45 @param heading heading to be used
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46 @type str
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47 @param text text to be used
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48 @type str
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49 @param kind kind of notification to be shown
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50 @type NotificationTypes
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51 @param parent reference to the parent widget
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52 @type QWidget
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53 """
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54 super(NotificationFrame, self).__init__(parent)
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55 self.setupUi(self)
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56
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57 self.layout().setAlignment(
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58 self.verticalLayout, Qt.AlignLeft | Qt.AlignVCenter)
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59
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60 self.setStyleSheet(NotificationFrame.getStyleSheet(kind))
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61
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62 if icon is None:
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63 icon = NotificationFrame.getIcon(kind)
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64 self.icon.setPixmap(icon)
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65
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66 self.heading.setText(heading)
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67 self.text.setText(text)
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68
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69 self.show()
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70 self.adjustSize()
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71
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72 @classmethod
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73 def getIcon(cls, kind):
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74 """
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75 Class method to get the icon for a specific notification kind.
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76
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77 @param kind notification kind
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78 @type NotificationTypes
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79 @return icon for the notification kind
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80 @rtype QPixmap
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81 """
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82 if kind == NotificationTypes.Critical:
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83 return UI.PixmapCache.getPixmap("notificationCritical48")
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84 elif kind == NotificationTypes.Warning:
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85 return UI.PixmapCache.getPixmap("notificationWarning48")
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86 elif kind == NotificationTypes.Information:
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87 return UI.PixmapCache.getPixmap("notificationInformation48")
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88 else:
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89 return UI.PixmapCache.getPixmap("notification48")
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90
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91 @classmethod
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92 def getStyleSheet(cls, kind):
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93 """
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94 Class method to get a style sheet for specific notification kind.
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95
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96 @param kind notification kind
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97 @type NotificationTypes
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98 @return string containing the style sheet for the notification kind
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99 @rtype str
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100 """
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101 if kind == NotificationTypes.Critical:
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102 return NotificationFrame.NotificationStyleSheetTemplate.format(
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103 Preferences.getUI("NotificationCriticalForeground"),
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104 Preferences.getUI("NotificationCriticalBackground")
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105 )
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106 elif kind == NotificationTypes.Warning:
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107 return NotificationFrame.NotificationStyleSheetTemplate.format(
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108 Preferences.getUI("NotificationWarningForeground"),
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109 Preferences.getUI("NotificationWarningBackground")
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110 )
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111 else:
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112 return ""
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113
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114
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115 class NotificationWidget(QWidget):
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116 """
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117 Class implementing a Notification list widget.
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118 """
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119 def __init__(self, parent=None, setPosition=False):
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120 """
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121 Constructor
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122
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123 @param parent reference to the parent widget
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124 @type QWidget
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125 @param setPosition flag indicating to set the display
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126 position interactively
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127 @type bool
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128 """
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129 super(NotificationWidget, self).__init__(parent)
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130
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131 self.__layout = QVBoxLayout(self)
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132 self.__layout.setContentsMargins(0, 0, 0, 0)
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133 self.setLayout(self.__layout)
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134
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135 self.__timeout = 5000
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136 self.__dragPosition = QPoint()
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137 self.__timers = {}
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138 self.__notifications = []
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139
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140 self.__settingPosition = setPosition
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141
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diff changeset
142 flags = (
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143 Qt.Tool |
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parents: 7229
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144 Qt.FramelessWindowHint |
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7229
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145 Qt.WindowStaysOnTopHint |
3039
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parents: 3012
diff changeset
146 Qt.X11BypassWindowManagerHint
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147 )
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148 if Globals.isWindowsPlatform():
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149 flags |= Qt.ToolTip
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150 self.setWindowFlags(flags)
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151
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152 if self.__settingPosition:
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parents:
diff changeset
153 self.setCursor(Qt.OpenHandCursor)
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154
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155 def showNotification(self, icon, heading, text,
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156 kind=NotificationTypes.Information, timeout=0):
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157 """
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158 Public method to show a notification.
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159
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160 @param icon icon to be used
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161 @type QPixmap
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162 @param heading heading to be used
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163 @type str
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164 @param text text to be used
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165 @type str
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166 @param kind kind of notification to be shown
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167 @type NotificationTypes
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168 @param timeout timeout in seconds after which the notification is
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169 to be removed (0 = do not remove until it is clicked on)
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170 @type int
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171 """
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172 notificationFrame = NotificationFrame(
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173 icon, heading, text, kind=kind, parent=self)
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174 self.__layout.addWidget(notificationFrame)
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175 self.__notifications.append(notificationFrame)
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176
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177 self.show()
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178
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179 self.__adjustSizeAndPosition()
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180
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181 if timeout:
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Detlev Offenbach <detlev@die-offenbachs.de>
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182 timer = QTimer()
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183 self.__timers[id(notificationFrame)] = timer
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184 timer.setSingleShot(True)
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Detlev Offenbach <detlev@die-offenbachs.de>
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185 timer.timeout.connect(
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Detlev Offenbach <detlev@die-offenbachs.de>
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186 lambda: self.__removeNotification(notificationFrame)
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187 )
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Detlev Offenbach <detlev@die-offenbachs.de>
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188 timer.setInterval(timeout * 1000)
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Detlev Offenbach <detlev@die-offenbachs.de>
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189 timer.start()
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190
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191 def __adjustSizeAndPosition(self):
2190
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192 """
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193 Private slot to adjust the notification list widget size and position.
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194 """
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diff changeset
195 self.adjustSize()
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196
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197 if not self.__settingPosition:
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198 pos = Preferences.getUI("NotificationPosition")
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199 try:
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200 screen = self.screen()
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
201 except AttributeError:
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diff changeset
202 # < Qt 5.15
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203 from PyQt5.QtGui import QGuiApplication
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204 screen = QGuiApplication.screenAt(pos)
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diff changeset
205 screenGeom = screen.geometry()
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206
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
207 newX = pos.x()
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diff changeset
208 newY = pos.y()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7923
diff changeset
209 if newX < screenGeom.x():
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diff changeset
210 newX = screenGeom.x()
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diff changeset
211 if newY < screenGeom.y():
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
212 newY = screenGeom.y()
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
213 if newX + self.width() > screenGeom.width():
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diff changeset
214 newX = screenGeom.width() - self.width()
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diff changeset
215 if newY + self.height() > screenGeom.height():
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diff changeset
216 newY = screenGeom.height() - self.height()
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diff changeset
217
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
218 self.move(newX, newY)
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Detlev Offenbach <detlev@die-offenbachs.de>
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219
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
220 def __removeNotification(self, notification):
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221 """
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diff changeset
222 Private method to remove a notification from the list.
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223
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224 @param notification reference to the notification to be removed
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225 @type NotificationFrame
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226 """
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diff changeset
227 notification.hide()
3366
6084bb3c3911 Made some changes to have a bunch of dialogs with correct sizes.
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parents: 3160
diff changeset
228
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diff changeset
229 # delete timer of an auto close notification
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diff changeset
230 key = id(notification)
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diff changeset
231 if key in self.__timers:
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diff changeset
232 self.__timers[key].stop()
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diff changeset
233 del self.__timers[key]
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diff changeset
234
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
235 # delete the notification
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
236 index = self.__layout.indexOf(notification)
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diff changeset
237 self.__layout.takeAt(index)
7997
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
238 try:
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
239 self.__notifications.remove(notification)
2ca23396c25c Another modifications to prevent an exception in certain situations.
Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
240 notification.deleteLater()
2ca23396c25c Another modifications to prevent an exception in certain situations.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7996
diff changeset
241 except ValueError:
2ca23396c25c Another modifications to prevent an exception in certain situations.
Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
242 # it was already delete by other method; ignore
2ca23396c25c Another modifications to prevent an exception in certain situations.
Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
243 pass
7952
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diff changeset
244
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
245 if self.__layout.count():
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diff changeset
246 self.__adjustSizeAndPosition()
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Detlev Offenbach <detlev@die-offenbachs.de>
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diff changeset
247 else:
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248 self.hide()
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249
abd65b78425e Added a notification system and updated the source documentation.
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250 def mousePressEvent(self, evt):
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251 """
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parents:
diff changeset
252 Protected method to handle presses of a mouse button.
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parents:
diff changeset
253
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diff changeset
254 @param evt reference to the mouse event (QMouseEvent)
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parents:
diff changeset
255 """
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parents:
diff changeset
256 if not self.__settingPosition:
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diff changeset
257 clickedLabel = self.childAt(evt.pos())
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diff changeset
258 clickedNotification = clickedLabel.parent()
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diff changeset
259 self.__removeNotification(clickedNotification)
2190
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parents:
diff changeset
260 return
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
261
abd65b78425e Added a notification system and updated the source documentation.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
262 if evt.button() == Qt.LeftButton:
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263 self.__dragPosition = (
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264 evt.globalPos() - self.frameGeometry().topLeft()
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265 )
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266 self.setCursor(Qt.ClosedHandCursor)
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267 evt.accept()
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268
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269 def mouseReleaseEvent(self, evt):
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270 """
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271 Protected method to handle releases of a mouse button.
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272
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273 @param evt reference to the mouse event (QMouseEvent)
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274 """
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275 if self.__settingPosition and evt.button() == Qt.LeftButton:
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276 self.setCursor(Qt.OpenHandCursor)
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277
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278 def mouseMoveEvent(self, evt):
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279 """
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280 Protected method to handle dragging the window.
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281
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282 @param evt reference to the mouse event (QMouseEvent)
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283 """
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284 if evt.buttons() & Qt.LeftButton:
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285 self.move(evt.globalPos() - self.__dragPosition)
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286 evt.accept()

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