qt-stop-watch.py

README.md

qt-stop-watch.py

A stop watch... as simple as it gets.

gui.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>200</width>
    <height>100</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>qt-stop-watch.py</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QGridLayout" name="gridLayout">
    <item row="1" column="2">
     <widget class="QPushButton" name="start">
      <property name="text">
       <string>Start</string>
      </property>
      <property name="default">
       <bool>true</bool>
      </property>
     </widget>
    </item>
    <item row="1" column="1">
     <widget class="QPushButton" name="reset">
      <property name="text">
       <string>Reset</string>
      </property>
     </widget>
    </item>
    <item row="0" column="1" colspan="2">
     <widget class="QLCDNumber" name="lcd">
      <property name="frameShape">
       <enum>QFrame::NoFrame</enum>
      </property>
      <property name="smallDecimalPoint">
       <bool>true</bool>
      </property>
      <property name="digitCount">
       <number>10</number>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

LICENSE

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.

In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to <http://unlicense.org>

qt-stop-watch.py

#!/usr/bin/env python

import sys
import os
import getopt

from PyQt5 import Qt
from PyQt5.QtWidgets import QSystemTrayIcon, QStyle, QAction, QMenu, qApp
from PyQt5.uic import loadUi
from PyQt5.QtGui import QPixmap, QPainter, QFont, QIcon, QColor
from PyQt5.QtCore import QPoint, QSize, QRectF
from PyQt5.QtCore import Qt as CoreQt

# [ms]
TICK_TIME = 2**6


class StopWatch(Qt.QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.ui = loadUi("gui.ui", self)
        self.reset.clicked.connect(self.do_reset)
        self.start.clicked.connect(self.do_start)

        self.timer = Qt.QTimer()
        self.timer.setInterval(TICK_TIME)
        self.timer.timeout.connect(self.tick)

        self.tray_icon = Qt.QSystemTrayIcon(self)
        self.tray_icon.setIcon(
            self.style().standardIcon(QStyle.SP_ComputerIcon))
        self.tray_icon.activated.connect(self.iconActivated)

        '''
            Define and add steps to work with the system tray icon
            show - show window
            hide - hide window
            exit - exit from application
        '''
        show_action = QAction("Show", self)
        quit_action = QAction("Exit", self)
        hide_action = QAction("Hide", self)
        show_action.triggered.connect(self.show)
        hide_action.triggered.connect(self.hide)
        quit_action.triggered.connect(qApp.quit)

        tray_menu = QMenu()
        tray_menu.addAction(show_action)
        tray_menu.addAction(hide_action)
        tray_menu.addAction(quit_action)
        self.tray_icon.setContextMenu(tray_menu)
        self.tray_icon.show()

        self.setGeometry(
            QStyle.alignedRect(
                CoreQt.LeftToRight,
                CoreQt.AlignCenter,
                self.size(),
                qApp.desktop().availableGeometry()
            )
        )

        self.do_reset()

    def keyPressEvent(self, event):
        if event.key() == Qt.Qt.Key_Escape:
            self.close()
        else:
            super().keyPressEvent(event)

    def display(self):
        seconds_frac = self.time % 60
        seconds = int(self.time % 60)
        minutes = int((self.time / 60) % 60)
        hours = int((self.time / (60 * 60)) % 24)
        self.lcd.display("{:d}:{:d}:{:05.2f}".format(hours, minutes, seconds_frac))
        self.drawOnIcon("{:d}:{:02d}".format(hours, minutes))

    def iconActivated(self, reason):
        if reason == QSystemTrayIcon.Trigger:
            self.show()

    def drawOnIcon(self, text):
        pixmap = QPixmap(QSize(100, 100))
        pixmap.fill(QColor(0, 0, 0, 0))
        painter = QPainter(pixmap)
        painter.setPen(QColor(255, 255, 255, 255))
        font = QFont("Monospace")
        font.setStyleHint(QFont.TypeWriter)
        painter.setFont(font)
        drawRect = QRectF(0, 0, 100, 100)
        self.adaptFontSize(painter, 0, drawRect, text)
        painter.drawText(drawRect, CoreQt.AlignCenter, text)
        painter.end()
        icon = QIcon(pixmap)
        self.tray_icon.setIcon(icon)

    def adaptFontSize(self, painter, flags, drawRect, text):
        flags = CoreQt.TextDontClip | CoreQt.TextWordWrap
        fontBoundRect = painter.fontMetrics().boundingRect(
            drawRect.toRect(), flags, text)
        xFactor = drawRect.width() / fontBoundRect.width()
        yFactor = drawRect.height() / fontBoundRect.height()
        factor = xFactor if xFactor < yFactor else yFactor
        f = painter.font()
        f.setPointSizeF(f.pointSizeF() * factor)
        painter.setFont(f)

    @Qt.pyqtSlot()
    def tick(self):
        self.time += TICK_TIME/1000
        self.display()

    @Qt.pyqtSlot()
    def do_start(self):
        self.timer.start()
        self.start.setText("Pause")
        self.start.clicked.disconnect()
        self.start.clicked.connect(self.do_pause)

    @Qt.pyqtSlot()
    def do_pause(self):
        self.timer.stop()
        self.start.setText("Start")
        self.start.clicked.disconnect()
        self.start.clicked.connect(self.do_start)

    @Qt.pyqtSlot()
    def do_reset(self):
        self.time = 0
        self.display()


def usage():
    print("Usage: {} [OPTION]".format(os.path.split(sys.argv[0])[1]))
    print("    --start         auto start stopwatch")
    print("    --hidden        start hidden")
    print("    --help          display help")

autostart = None
hidden = None

try:
    lOpts, lArgs = getopt.getopt(sys.argv[1:], "", ["help", "start", "hidden"])

    if len(lArgs) == 0:
        lArgs = [os.getcwd()]

    if ("--help", "") in lOpts:
        usage()
        sys.exit(None)

    if ("--start", "") in lOpts:
        autostart = True

    if ("--hidden", "") in lOpts:
        hidden = True

except getopt.GetoptError as err:
    print(err)
    print()
    usage()
    sys.exit(2)

app = Qt.QApplication(sys.argv)

watch = StopWatch()
watch.show()

if autostart:
    watch.do_start()

if hidden:
    watch.hide()

app.exec_()