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124 lines
4.2 KiB
Python
124 lines
4.2 KiB
Python
#!/usr/bin/env python
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#############################################################################
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##
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## Copyright (C) 2013 Riverbank Computing Limited.
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## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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## All rights reserved.
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##
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## This file is part of the examples of PyQt.
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##
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## $QT_BEGIN_LICENSE:BSD$
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## You may use this file under the terms of the BSD license as follows:
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##
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## "Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions are
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## met:
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in
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## the documentation and/or other materials provided with the
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## distribution.
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## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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## the names of its contributors may be used to endorse or promote
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## products derived from this software without specific prior written
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## permission.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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## $QT_END_LICENSE$
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##
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#############################################################################
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from PyQt5.QtCore import QBasicTimer
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from PyQt5.QtGui import QColor, QFontMetrics, QPainter, QPalette
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from PyQt5.QtWidgets import (QApplication, QDialog, QLineEdit, QVBoxLayout,
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QWidget)
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class WigglyWidget(QWidget):
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def __init__(self, parent=None):
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super(WigglyWidget, self).__init__(parent)
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self.setBackgroundRole(QPalette.Midlight)
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self.setAutoFillBackground(True)
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newFont = self.font()
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newFont.setPointSize(newFont.pointSize() + 20)
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self.setFont(newFont)
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self.timer = QBasicTimer()
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self.text = ''
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self.step = 0;
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self.timer.start(60, self)
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def paintEvent(self, event):
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sineTable = (0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38)
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metrics = QFontMetrics(self.font())
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x = (self.width() - metrics.width(self.text)) / 2
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y = (self.height() + metrics.ascent() - metrics.descent()) / 2
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color = QColor()
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painter = QPainter(self)
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for i, ch in enumerate(self.text):
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index = (self.step + i) % 16
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color.setHsv((15 - index) * 16, 255, 191)
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painter.setPen(color)
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painter.drawText(x, y - ((sineTable[index] * metrics.height()) / 400), ch)
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x += metrics.width(ch)
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def setText(self, newText):
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self.text = newText
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def timerEvent(self, event):
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if event.timerId() == self.timer.timerId():
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self.step += 1
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self.update()
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else:
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super(WigglyWidget, self).timerEvent(event)
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class Dialog(QDialog):
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def __init__(self, parent=None):
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super(Dialog, self).__init__(parent)
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wigglyWidget = WigglyWidget()
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lineEdit = QLineEdit()
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layout = QVBoxLayout()
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layout.addWidget(wigglyWidget)
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layout.addWidget(lineEdit)
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self.setLayout(layout)
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lineEdit.textChanged.connect(wigglyWidget.setText)
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lineEdit.setText("Hello world!")
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self.setWindowTitle("Wiggly")
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self.resize(360, 145)
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if __name__ == '__main__':
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import sys
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app = QApplication(sys.argv)
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dialog = Dialog()
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dialog.show();
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sys.exit(app.exec_())
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