#!/usr/bin/env python #/**************************************************************************** #** $Id: progress.py,v 1.1 2002/09/02 12:05:21 phil Exp $ #** #** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. #** #** This file is part of an example program for Qt. This example #** program may be used, distributed and modified without limitation. #** #** Converted to PyQt3: Hans-Peter Jansen #** #*****************************************************************************/ from qt import * import sys from random import random TRUE = 1 FALSE = 0 class AnimatedThingy(QLabel): def __init__(self, parent, s): QLabel.__init__(self, parent) self.nqix = 40 self.step = 0 self.ox = [] self.oy = [] self.px = [] self.py = [] for i in range(self.nqix): self.ox.append(0) self.oy.append(0) self.px.append(0) self.py.append(0) self.x0, self.y0, self.x1, self.y1 = 0, 0, 0, 0 self.dx0 = 2 + int(random() * 8) self.dy0 = 2 + int(random() * 8) self.dx1 = 2 + int(random() * 8) self.dy1 = 2 + int(random() * 8) self.label = QString(s) self.setEraseColor(Qt.black) self.label.append("\n... and wasting CPU\nwith this animation!\n") def XXXshow(self): if not self.isVisible(): print "bla" self.startTimer(100) QWidget.show(self) def hide(self): QWidget.hide(self) self.killTimers() def sizeHint(self): return QSize(120, 100) def timerEvent(self, e): p, pn = self._painter() pn.setColor(self.eraseColor()) p.setPen(pn) self.step = step = (self.step + 1) % self.nqix # erase line p.drawLine(self.ox[step], self.oy[step], self.px[step], self.py[step]) # calc new line coordinates self.x0, self.dx0 = self._inc(self.x0, self.dx0, self.width()) self.y0, self.dy0 = self._inc(self.y0, self.dy0, self.height()) self.x1, self.dx1 = self._inc(self.x1, self.dx1, self.width()) self.y1, self.dy1 = self._inc(self.y1, self.dy1, self.height()) self.ox[step] = self.x0 self.oy[step] = self.y0 self.px[step] = self.x1 self.py[step] = self.y1 self._drawqix(p, pn, step) self._drawtxt(p) def paintEvent(self, e): p, pn = self._painter() p.setClipRect(e.rect()) for i in range(self.nqix): self._drawqix(p, pn, i) self._drawtxt(p) def _painter(self): p = QPainter(self) pn = p.pen() pn.setWidth(2) p.setPen(pn) return p, pn def _drawqix(self, p, pn, step): c = QColor() # enhanced rainbow effect i = (step * 511)/self.nqix if i > 255: i = 511 - i c.setHsv(i, 255, 255) pn.setColor(c) p.setPen(pn) p.drawLine(self.ox[step], self.oy[step], self.px[step], self.py[step]) def _drawtxt(self, p): #p.setPen(self.colorGroup().text()) p.setPen(Qt.white) p.drawText(self.rect(), Qt.AlignCenter, self.label) def _inc(self, x, dx, b): x += dx if x < 0: x = 0 dx = 2 + int(random() * 8) elif x >= b: x = b-1 dx = -(2 + int(random() * 8)) return x, dx class CPUWaster(QWidget): def __init__(self): QWidget.__init__(self) self.first_draw_item = 1000 self.last_draw_item = 1006 self.rects = 0 self.timer_driven = 0 self.default_label = 0 self.got_stop = 0 self.pb = None menubar = QMenuBar(self, "menu") file = QPopupMenu() menubar.insertItem("&File", file) for i in range(self.first_draw_item, self.last_draw_item + 1): file.insertItem(self.drawItemText(i), i) self.connect(menubar, SIGNAL("activated(int)"), self.doMenuItem) file.insertSeparator() file.insertItem("Quit", qApp, SLOT("quit()")) options = QPopupMenu() menubar.insertItem("&Options", options) self.td_id = options.insertItem("Timer driven", self.timerDriven) self.ld_id = options.insertItem("Loop driven", self.loopDriven) options.insertSeparator() self.dl_id = options.insertItem("Default label", self.defaultLabel) self.cl_id = options.insertItem("Custom label", self.customLabel) options.insertSeparator() self.md_id = options.insertItem("No minimum duration", self.toggleMinimumDuration) options.setCheckable(TRUE) self.options = options self.menubar = menubar self.file = file #self.loopDriven() self.timerDriven() #self.defaultLabel() self.customLabel() self.setFixedSize(400, 300) self.setEraseColor(Qt.black) def drawItemRects(self, id): n = id - self.first_draw_item r = 100 while n: n -= 1 f = 5 if not n % 3: f = 4 r *= f return r def drawItemText(self, id): return QString("%d Rectangles" % self.drawItemRects(id)) # slots def doMenuItem(self, id): if id >= self.first_draw_item and id <= self.last_draw_item: self._draw(self.drawItemRects(id)) def stopDrawing(self): self.got_stop = TRUE def timerDriven(self): self.timer_driven = TRUE self.options.setItemChecked(self.td_id, TRUE) self.options.setItemChecked(self.ld_id, FALSE) def loopDriven(self): self.timer_driven = FALSE self.options.setItemChecked(self.ld_id, TRUE) self.options.setItemChecked(self.td_id, FALSE) def defaultLabel(self): self.default_label = TRUE self.options.setItemChecked(self.dl_id, TRUE) self.options.setItemChecked(self.cl_id, FALSE) def customLabel(self): self.default_label = FALSE self.options.setItemChecked(self.dl_id, FALSE) self.options.setItemChecked(self.cl_id, TRUE) def toggleMinimumDuration(self): self.options.setItemChecked(self.md_id, not self.options.isItemChecked(self.md_id)) def timerEvent(self, e): self.pb.setProgress(self.pb.totalSteps() - self.rects) self.rects -= 1 p = QPainter(self) ww = self.width() wh = self.height() if ww > 8 and wh > 8: c = QColor(int(random() * 255), int(random() * 255), int(random() * 255)) x = int(random() * (ww-8)) y = int(random() * (wh-8)) w = int(random() * (ww-x)) h = int(random() * (wh-y)) p.fillRect(x, y, w, h, QBrush(c)) if not self.rects or self.got_stop: self.pb.setProgress(self.pb.totalSteps()) p = QPainter(self) p.fillRect(0, 0, self.width(), self.height(), QBrush(self.eraseColor())) self.enableDrawingItems(TRUE) self.killTimers() if not self.default_label: self.pb.killTimers() self.l.killTimers() del self.pb self.pb = None def newProgressDialog(self, label, steps, modal): d = QProgressDialog(label, "Cancel", steps, self, "progress", modal) if self.options.isItemChecked(self.md_id): d.setMinimumDuration(0) if not self.default_label: self.l = AnimatedThingy(d, label) d.setLabel(self.l) self.l.startTimer(100) return d def enableDrawingItems(self, yes): for i in range(self.first_draw_item, self.last_draw_item): self.menubar.setItemEnabled(i, yes) def _draw(self, n): if self.timer_driven: if self.pb: qWarning("This cannot happen!") return self.rects = n self.pb = self.newProgressDialog("Drawing rectangles.\nUsing timer event.", n, FALSE) self.pb.setCaption("Please Wait") self.connect(self.pb, SIGNAL("cancelled()"), self.stopDrawing) self.enableDrawingItems(FALSE) self.startTimer(10) self.got_stop = FALSE else: lpb = self.newProgressDialog("Drawing rectangles.\nUsing loop.", n, TRUE) lpb.setCaption("Please Wait") p = QPainter(self) for i in range(n): lpb.setProgress(i) if lpb.wasCancelled(): break c = QColor(int(random() * 255), int(random() * 255), int(random() * 255)) x = int(random() * (self.width()-8)) y = int(random() * (self.height()-8)) w = int(random() * (self.width()-x)) h = int(random() * (self.height()-y)) p.fillRect(x, y, w, h, QBrush(c)) lpb.cancel() del lpb p.fillRect(0, 0, self.width(), self.height(), QBrush(self.eraseColor())) if __name__ == "__main__": app = QApplication(sys.argv) try: n = int(sys.argv[1]) except: n = 1 for i in range(n): cpuw = CPUWaster() if i == 0: app.setMainWidget(cpuw) cpuw.show() app.exec_loop()