summaryrefslogtreecommitdiffstats
path: root/examples3/progress.py
blob: eb5a8328081728b656247d786c61b0b8d067c5c2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
#!/usr/bin/env python

#/****************************************************************************
#** $Id:  progress.py   3.3.7   edited Aug 31 2005 $
#**
#** Copyright (C) 1992-2005 Trolltech AS.  All rights reserved.
#**
#** This file is part of an example program for TQt.  This example
#** program may be used, distributed and modified without limitation.
#**
#** Converted to PyTQt3 by Hans-Peter Jansen <[email protected]>
#** 
#*****************************************************************************/

import sys
from python_tqt.qt import *
from random import randint

class AnimatedThingy(TQLabel):
    def __init__(self, parent, s):
        TQLabel.__init__(self, parent)
        self.label = TQString(s)
        self.setEraseColor(TQt.white)
        self.label.append("\n... and wasting CPU\nwith this animation!\n")
        self.step = 0
        self.nqix = 10
        self.stepoff = 2
        self.stepmax = 7
        self.lwidth = 2
        self.tdelay = 100
        self.ox, self.oy = [], []
        for i in range(self.nqix):
            self.ox.append((0, 0))
            self.oy.append((0, 0))
        self.x0, self.y0, self.x1, self.y1 = 0, 0, 0, 0
        self.dx0 = randint(0, self.stepmax) + self.stepoff
        self.dy0 = randint(0, self.stepmax) + self.stepoff
        self.dx1 = randint(0, self.stepmax) + self.stepoff
        self.dy1 = randint(0, self.stepmax) + self.stepoff

    def show(self):
        if not self.isVisible():
            self.startTimer(self.tdelay)
        TQWidget.show(self)

    def hide(self):
        TQWidget.hide(self)
        self.killTimers()

    def sizeHint(self):
        return TQSize(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][0], self.oy[step][0],
                   self.ox[step][1], self.oy[step][1])
        # calc new line coordinates
        ww, wh = self.width(), self.height()
        self.x0, self.dx0 = self._inc(self.x0, self.dx0, ww)
        self.y0, self.dy0 = self._inc(self.y0, self.dy0, wh)
        self.x1, self.dx1 = self._inc(self.x1, self.dx1, ww)
        self.y1, self.dy1 = self._inc(self.y1, self.dy1, wh)
        self.ox[step] = (self.x0, self.x1)
        self.oy[step] = (self.y0, self.y1)
        self._drawqix(p, pn, step)
        self._drawtxt(p)

    def paintEvent(self, event):
        p, pn = self._painter()
        p.setClipRect(event.rect())
        for i in range(self.nqix):
            self._drawqix(p, pn, i)
        self._drawtxt(p)

    def _painter(self):
        p = TQPainter(self)
        # we need to create a new pen from p.pen() with TQPen() in order
        # to make it fully functional (changes are discarded otherwise)
        pn = TQPen(p.pen())
        pn.setWidth(self.lwidth)
        p.setPen(pn)
        return p, pn

    def _drawqix(self, p, pn, step):
        # rainbow effect
        pn.setColor(TQColor((step * 255)/self.nqix, 255, 255, TQColor.Hsv))
        p.setPen(pn)
        p.drawLine(self.ox[step][0], self.oy[step][0],
                   self.ox[step][1], self.oy[step][1])

    def _drawtxt(self, p):
        p.setPen(self.colorGroup().text())
        p.drawText(self.rect(), TQt.AlignCenter, self.label)

    def _inc(self, x, dx, b):
        x += dx
        if x < 0:
            x = 0
            dx = randint(0, self.stepmax) + self.stepoff;
        elif x >= b:
            x = b - 1
            dx = -(randint(0, self.stepmax) + self.stepoff)
        return x, dx


class CPUWaster(TQWidget):
    def __init__(self):
        TQWidget.__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 = False
        self.pb = None      # non modal progress dialog
        self.menubar = menubar = TQMenuBar(self, "menu")
        self.file_ = file_ = TQPopupMenu()
        menubar.insertItem("&File", file_)
        for i in range(self.first_draw_item, self.last_draw_item + 1):
            file_.insertItem(self.drawItemText(i), i)
            file_.setAccel(TQKeySequence(
                           "Ctrl+%s" % (i - self.first_draw_item)), i)
        self.connect(menubar, SIGNAL("activated(int)"), self.doMenuItem)
        file_.insertSeparator()
        file_.insertItem("Quit", tqApp, SLOT("quit()"), TQKeySequence("Ctrl+Q"))
        self.options = options = TQPopupMenu()
        menubar.insertItem("&Options", options)
        self.ld_id = options.insertItem("Loop driven", self.loopDriven,
                                        TQKeySequence("Alt+L"))
        self.td_id = options.insertItem("Timer driven", self.timerDriven,
                                        TQKeySequence("Alt+T"))
        options.insertSeparator()
        self.dl_id = options.insertItem("Default label", self.defaultLabel,
                                        TQKeySequence("Alt+D"))
        self.cl_id = options.insertItem("Custom label", self.customLabel,
                                        TQKeySequence("Alt+C"))
        options.insertSeparator()
        self.md_id = options.insertItem("No minimum duration",
                                        self.toggleMinimumDuration,
                                        TQKeySequence("Alt+M"))
        options.setCheckable(True)
        # default option settings
        self.timerDriven()
        self.customLabel()
        self.toggleMinimumDuration()
        self.resize(400, 300)
        self.setEraseColor(TQt.black)

    def drawItemRects(self, id_):
        r = 100
        for n in range(id_ - self.first_draw_item):
            if not n % 3:
                r *= 4
            else:
                r *= 5
        return r

    def drawItemText(self, id_):
        return TQString("%d Rectangles" % self.drawItemRects(id_))

    def enableDrawingItems(self, yes):
        for i in range(self.first_draw_item, self.last_draw_item + 1):
            self.menubar.setItemEnabled(i, yes)

    # slots
    def doMenuItem(self, id_):
        if id_ >= self.first_draw_item and id_ <= self.last_draw_item:
            self.draw(self.drawItemRects(id_))

    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 stopDrawing(self):
        self.got_stop = True

    def newProgressDialog(self, label, steps, modal):
        d = TQProgressDialog(label, "Cancel", steps, self, "progress", modal)
        if self.options.isItemChecked(self.md_id):
            d.setMinimumDuration(0)
        if not self.default_label:
            d.setLabel(AnimatedThingy(d, label))
        d.setCaption("Please Wait")
        return d

    def draw(self, n):
        if self.timer_driven:
            if self.pb:
                tqWarning("This cannot happen!")
                return

            self.rects = n
            self.pb = self.newProgressDialog("Drawing rectangles.\n"
                                             "Using timer event.", n, False)
            self.connect(self.pb, SIGNAL("cancelled()"), self.stopDrawing)
            self.enableDrawingItems(False)
            self.startTimer(0)
            self.got_stop = False
        else:   # loop driven with modal progress dialog
            lpb = self.newProgressDialog("Drawing rectangles.\n"
                                         "Using loop.", n, True)
            p = TQPainter(self)
            for i in range(n):
                lpb.setProgress(i)
                if lpb.wasCancelled():
                    break
                self._draw(p)
            self._clear(p)
            lpb.cancel()
            del lpb

    def timerEvent(self, e):
        if not self.got_stop:
            self.pb.setProgress(self.pb.totalSteps() - self.rects)
        self.rects -= 1
        p = TQPainter(self)
        self._draw(p)

        if not self.rects or self.got_stop:
            if not self.got_stop:
                self.pb.setProgress(self.pb.totalSteps())
            self._clear(p)
            self.enableDrawingItems(True)
            self.killTimers()
            self.pb.cancel()
            del self.pb
            self.pb = None

    def _draw(self, p):
        ww = self.width()
        wh = self.height()
        if ww > 8 and wh > 8:
            c = TQColor(randint(0, 255), randint(0, 255), randint(0, 255))
            x = randint(0, ww - 8)
            y = randint(0, wh - 8)
            w = randint(0, ww - x)
            h = randint(0, wh - y)
            p.fillRect(x, y, w, h, TQBrush(c))

    def _clear(self, p):
        p.fillRect(0, 0, self.width(), self.height(), TQBrush(self.eraseColor()))


if __name__ == "__main__":
    app = TQApplication(sys.argv)
    try:
        n = int(sys.argv[1])
    except:
        n = 1
    wlst = []   # keep a ref around
    for i in range(n):
        cpuw = CPUWaster()
        if i == 0:
            app.setMainWidget(cpuw)
        cpuw.show()
        wlst.append(cpuw)
    app.exec_loop()