PyPI 官网下载 | qrangeslider-0.1.tar.gz

#!/usr/bin/env python # --------------------------------------------------------------------------------------------- # Copyright (c) 2011-2012, Ryan Galloway (ryan@rsgalloway.com) # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # - Redistributions of source code must retain the above copyright notice, this # list of conditions and the following disclaimer. # # - Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # - Neither the name of the software nor the names of its contributors # may be used to endorse or promote products derived from this software # without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # # --------------------------------------------------------------------------------------------- # docs and latest version available for download at # http://rsgalloway.github.com/qrangeslider # --------------------------------------------------------------------------------------------- __author__ = "Ryan Galloway <ryan@rsgalloway.com>" __version__ = "0.1" # --------------------------------------------------------------------------------------------- # SUMMARY # --------------------------------------------------------------------------------------------- """ The QRangeSlider class implements a horizontal range slider widget. """ # --------------------------------------------------------------------------------------------- # TODO # --------------------------------------------------------------------------------------------- """ - smoother mouse move event handler - support splits and joins - verticle sliders - ticks """ # --------------------------------------------------------------------------------------------- # IMPORTS # --------------------------------------------------------------------------------------------- import os import sys from PyQt4 import QtCore from PyQt4 import QtGui from PyQt4 import uic try: _fromUtf8 = QtCore.QString.fromUtf8 except AttributeError: _fromUtf8 = lambda s: s __all__ = ['QRangeSlider'] DEFAULT_CSS = """ QRangeSlider * { border: 0px; padding: 0px; } QRangeSlider #Head { background: #222; } QRangeSlider #Span { background: #393; } QRangeSlider #Span:active { background: #282; } QRangeSlider #Tail { background: #222; } QRangeSlider > QSplitter::handle { background: #393; } QRangeSlider > QSplitter::handle:vertical { height: 4px; } QRangeSlider > QSplitter::handle:pressed { background: #ca5; } """ class Ui_Form(object): """default range slider form""" def setupUi(self, Form): Form.setObjectName(_fromUtf8("QRangeSlider")) Form.resize(300, 30) Form.setStyleSheet(_fromUtf8(DEFAULT_CSS)) self.gridLayout = QtGui.QGridLayout(Form) self.gridLayout.setMargin(0) self.gridLayout.setSpacing(0) self.gridLayout.setObjectName(_fromUtf8("gridLayout")) self._splitter = QtGui.QSplitter(Form) self._splitter.setMinimumSize(QtCore.QSize(0, 0)) self._splitter.setMaximumSize(QtCore.QSize(16777215, 16777215)) self._splitter.setOrientation(QtCore.Qt.Horizontal) self._splitter.setObjectName(_fromUtf8("splitter")) self._head = QtGui.QGroupBox(self._splitter) self._head.setTitle(_fromUtf8("")) self._head.setObjectName(_fromUtf8("Head")) self._handle = QtGui.QGroupBox(self._splitter) self._handle.setTitle(_fromUtf8("")) self._handle.setObjectName(_fromUtf8("Span")) self._tail = QtGui.QGroupBox(self._splitter) self._tail.setTitle(_fromUtf8("")) self._tail.setObjectName(_fromUtf8("Tail")) self.gridLayout.addWidget(self._splitter, 0, 0, 1, 1) self.retranslateUi(Form) QtCore.QMetaObject.connectSlotsByName(Form) def retranslateUi(self, Form): Form.setWindowTitle(QtGui.QApplication.translate("QRangeSlider", "QRangeSlider", None, QtGui.QApplication.UnicodeUTF8)) class Element(QtGui.QGroupBox): def __init__(self, parent, main): super(Element, self).__init__(parent) self.main = main def setStyleSheet(self, style): """redirect style to parent groupbox""" self.parent().setStyleSheet(style) def textColor(self): """text paint color""" return getattr(self, '__textColor', QtGui.QColor(125, 125, 125)) def setTextColor(self, color): """set the text paint color""" if type(color) == tuple and len(color) == 3: color = QtGui.QColor(color[0], color[1], color[2]) elif type(color) == int: color = QtGui.QColor(color, color, color) setattr(self, '__textColor', color) def paintEvent(self, event): """overrides paint event to handle text""" qp = QtGui.QPainter() qp.begin(self) if self.main.drawValues(): self.drawText(event, qp) qp.end() class Head(Element): """area before the handle""" def __init__(self, parent, main): super(Head, self).__init__(parent, main) def drawText(self, event, qp): qp.setPen(self.textColor()) qp.setFont(QtGui.QFont('Arial', 10)) qp.drawText(event.rect(), QtCore.Qt.AlignLeft, str(self.main.min())) class Tail(Element): """area after the handle""" def __init__(self, parent, main): super(Tail, self).__init__(parent, main) def drawText(self, event, qp): qp.setPen(self.textColor()) qp.setFont(QtGui.QFont('Arial', 10)) qp.drawText(event.rect(), QtCore.Qt.AlignRight, str(self.main.max())) class Handle(Element): """handle area""" def __init__(self, parent, main): super(Handle, self).__init__(parent, main) def drawText(self, event, qp): qp.setPen(self.textColor()) qp.setFont(QtGui.QFont('Arial', 10)) qp.drawText(event.rect(), QtCore.Qt.AlignLeft, str(self.main.start())) qp.drawText(event.rect(), QtCore.Qt.AlignRight, str(self.main.end())) def mouseMoveEvent(self, event): event.accept() mx = event.globalX() _mx = getattr(self, '__mx', None) if not _mx: setattr(self, '__mx', mx) dx = 0 else: dx = mx - _mx setattr(self, '__mx', mx) if dx == 0: event.ignore() return elif dx > 0: dx = 1 elif dx < 0: dx = -1 s = self.main.start() + dx e = self.main.end() + dx if s >= self.main.min() and e <= self.main.max(): self.main.setRange(s, e) class QRangeSlider(QtGui.QWidget, Ui_Form): """ The QRangeSlider class implements a horizontal range slider widget. Inherits QWidget. Methods * __init__ (self, QWidget parent = None) * bool drawValues (self) * int end (self) * (int, int) getRange (self) * int max (self) * int min (se