performance-log-viewer.py 105 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
#!/usr/bin/env python3

"""
performance-log-viewer.py -- GIMP performance log viewer
Copyright (C) 2018  Ell

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.


Usage: performance-log-viewer.py < infile
"""

24
25
import builtins, sys, os, math, statistics, bisect, functools, enum, re, \
       subprocess
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

from collections import namedtuple
from xml.etree   import ElementTree

import gi
gi.require_version ("Gdk", "3.0")
gi.require_version ("Gtk", "3.0")
from gi.repository import GLib, GObject, Gio, Gdk, Gtk, Pango

def compose (head = None, *tail):
    return (
        lambda *args, **kwargs: head (compose (*tail) (*args, **kwargs))
    ) if tail else head or (lambda x: x)

def div (x, y):
    return x / y     if y     else \
           +math.inf if x > 0 else \
           -math.inf if x < 0 else \
           None

def format_float (x):
    return "%g" % (round (100 * x) / 100)

def format_percentage (x, digits = 0):
    scale = 10 ** digits

    return "%g%%" % (round (100 * scale * x) / scale)

def format_size (size):
    return GLib.format_size_full (size, GLib.FormatSizeFlags.IEC_UNITS)

def format_duration (t):
    return "%02d:%02d:%02d.%02d" % (int (t / 3600),
                                    int (t / 60) % 60,
                                    int (t % 60),
                                    round (100 * t) % 100)

def format_color (color):
    return "#%02x%02x%02x" % tuple (
        map (lambda x: min (max (round (255 * x), 0), 255), color)
    )

def is_bright_color (color):
    return max (tuple (color)[0:3]) > 0.5

71
72
73
74
75
def get_basename (path):
    match = re.fullmatch (".*[\\\\/](.+?)[\\\\/]?", path)

    return match[1] if match else path

76
77
78
79
80
81
82
83
84
85
search_path = list (filter (
    bool,
    os.environ.get ("PERFORMANCE_LOG_VIEWER_PATH", ".").split (":")
))

editor_command  = os.environ.get ("PERFORMANCE_LOG_VIEWER_EDITOR",
                                  "xdg-open {file}")
editor_command += " &"

def find_file (filename):
86
87
    def lookup (filename):
        filename = re.sub ("[\\\\/]", GLib.DIR_SEPARATOR_S, filename)
88

89
90
        if GLib.path_is_absolute (filename):
            file = Gio.File.new_for_path (filename)
91

92
93
            if file.query_exists ():
                return file
94

95
96
        for path in search_path:
            rest = filename
97

98
99
            while rest:
                file = Gio.File.new_for_path (GLib.build_filenamev ((path, rest)))
100

101
102
103
104
105
106
107
108
                if file.query_exists ():
                    return file

                sep = rest.find (GLib.DIR_SEPARATOR_S)

                rest = rest[sep + 1:] if sep >= 0 else ""

        return None
109

110
111
    if filename not in find_file.cache:
        find_file.cache[filename] = lookup (filename)
112

113
    return find_file.cache[filename]
114

115
find_file.cache = {}
116

117
118
119
120
121
def run_editor (file, line):
    subprocess.call (editor_command.format (file = "\"%s\"" % file.get_path (),
                                            line = line),
                     shell = True)

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
VariableType = namedtuple ("VariableType",
                           ("parse", "format", "format_numeric"))

var_types = {
    "boolean": VariableType (
        parse          = int,
        format         = compose (str, bool),
        format_numeric = format_float
    ),

    "integer": VariableType (
        parse          = int,
        format         = format_float,
        format_numeric = None
    ),

    "size": VariableType (
        parse          = int,
        format         = format_size,
        format_numeric = None
    ),

    "size-ratio": VariableType (
        parse          = lambda x: div (*map (int, x.split ("/"))),
        format         = format_percentage,
        format_numeric = None
    ),

    "int-ratio": VariableType (
        parse          = lambda x: div (*map (int, x.split (":"))),
        format         = lambda x: "%g:%g" % (
153
154
155
                             (0, 0)                     if math.isnan (x) else
                             (1, 0)                     if x == math.inf  else
                             (-1, 0)                    if x == -math.inf else
156
                             (0, 1)                     if x == 0         else
157
                             (round (100 * x) / 100, 1) if abs (x) >  1   else
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
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
                             (1, round (100 / x) / 100)
                         ),
        format_numeric = None
    ),

    "percentage": VariableType (
        parse          = float,
        format         = format_percentage,
        format_numeric = None
    ),

    "duration": VariableType (
        parse          = float,
        format         = format_duration,
        format_numeric = None
    ),

    "rate-of-change": VariableType (
        parse          = float,
        format         = lambda x: "%s/s" % format_size (x),
        format_numeric = None
    )
}
var_types = {
    type: VariableType (
        parse          = parse,
        format         = lambda x, f = format: \
                             f (x) if x is not None else "N/A",
        format_numeric = lambda x, f = format_numeric or format:
                             f (x) if x is not None else "N/A"
    )
    for type, (parse, format, format_numeric) in var_types.items ()
}

# Read performance log from STDIN
log = ElementTree.fromstring (sys.stdin.buffer.read ())

Variable = namedtuple ("Variable", ("type", "color"))
Value    = namedtuple ("Value",    ("value", "raw"))

var_colors = [
    (0.8, 0.4, 0.4),
    (0.8, 0.6, 0.4),
    (0.4, 0.8, 0.4),
    (0.8, 0.8, 0.4),
    (0.4, 0.4, 0.8),
    (0.4, 0.8, 0.8),
    (0.8, 0.4, 0.8),
    (0.8, 0.8, 0.8)
]

var_defs = {}

for var in log.find ("var-defs"):
    color = var_colors[len (var_defs) % len (var_colors)]

    var_defs[var.get ("name")] = Variable (var.get ("type"), color)

AddressInfo = namedtuple ("AddressInfo", ("id",
                                          "name",
                                          "object",
                                          "symbol",
                                          "offset",
                                          "source",
                                          "line"))

address_map = {}

if log.find ("address-map"):
    for address in log.find ("address-map").iterfind ("address"):
        value = int (address.get ("value"), 0)

        object = address.find ("object").text
        symbol = address.find ("symbol").text
        base   = address.find ("base").text
        source = address.find ("source").text
        line   = address.find ("line").text

        address_map[value] = AddressInfo (
            id     = int (base, 0) if base else value,
            name   = symbol or base or hex (value),
            object = object,
            symbol = symbol,
            offset = value - int (base, 0) if base else None,
            source = source,
            line   = int (line) if line else None
        )

class ThreadState (enum.Enum):
    SUSPENDED = enum.auto ()
    RUNNING   = enum.auto ()

    def __str__ (self):
        return {
            ThreadState.SUSPENDED: "S",
            ThreadState.RUNNING:   "R"
        }[self]

Thread = namedtuple ("Thread", ("id", "name", "state", "frames"))
Frame  = namedtuple ("Frame",  ("id", "address", "info"))

Sample = namedtuple ("Sample", ("t", "vars", "markers", "backtrace"))
Marker = namedtuple ("Marker", ("id", "t", "description"))

samples = []
markers = []

for element in log.find ("samples"):
    if element.tag == "sample":
        sample = Sample (
            t         = int (element.get ("t")),
            vars      = {},
            markers   = markers,
            backtrace = []
        )

        for var in element.find ("vars"):
            sample.vars[var.tag] = Value (
                value = var_types[var_defs[var.tag].type].parse (var.text) \
                        if var.text else None,
                raw   = var.text.strip () if var.text else None
            )

        if element.find ("backtrace"):
            for thread in element.find ("backtrace").iterfind ("thread"):
                id      = thread.get ("id")
                name    = thread.get ("name")
                running = thread.get ("running")

                t = Thread (
                    id     = int (id),
                    name   = name,
                    state  = ThreadState.RUNNING if running and int (running) \
                             else ThreadState.SUSPENDED,
                    frames = []
                )

                for frame in thread.iterfind ("frame"):
                    address = int (frame.get ("address"), 0)

                    info = address_map.get (address, None)

                    if not info:
                        info = AddressInfo (
                            id     = address,
                            name   = hex (address),
                            object = None,
                            symbol = None,
                            offset = None,
                            source = None,
                            line   = None
                        )

                    t.frames.append (Frame (
                        id      = len (t.frames),
                        address = address,
                        info    = info
                    ))

                sample.backtrace.append (t)

        samples.append (sample)

        markers = []
    elif element.tag == "marker":
        marker = Marker (
            id          = int (element.get ("id")),
            t           = int (element.get ("t")),
            description = element.text.strip () if element.text else None
        )

        markers.append (marker)

if samples and markers:
    samples[-1].markers += markers

markers = None

336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
DELTA_SAME = __builtins__.object ()

def delta_encode (dest, src):
    if type (dest) == type (src):
        if dest == src:
            return DELTA_SAME
        elif type (dest) == tuple:
            return tuple (delta_encode (d, s) for d, s in zip (dest, src)) + \
                   dest[len (src):]

    return dest

def delta_decode (dest, src):
    if dest == DELTA_SAME:
        return src
    elif type (dest) == type (src):
        if type (dest) == tuple:
            return tuple (delta_decode (d, s) for d, s in zip (dest, src)) + \
                   dest[len (src):]

    return dest

class History (GObject.GObject):
    Source = namedtuple ("HistorySource", ("get", "set"))

    def __init__ (self):
        GObject.GObject.__init__ (self)

        self.sources = []

        self.state = None

        self.undo_stack = []
        self.redo_stack = []

371
        self.blocked         = 0
372
373
374
375
376
377
378
379
380
381
382
383
384
385
        self.n_groups        = 0
        self.pending_record  = False

    @GObject.Property (type = bool, default = False)
    def can_undo (self):
        return bool (self.undo_stack)

    @GObject.Property (type = bool, default = False)
    def can_redo (self):
        return bool (self.redo_stack)

    def add_source (self, get, set):
        self.sources.append (self.Source (get, set))

386
387
388
389
390
391
392
393
394
    def block (self):
        self.blocked += 1

    def unblock (self):
        self.blocked -= 1

    def is_blocked (self):
        return self.blocked > 0

395
396
397
398
399
400
401
402
403
404
    def start_group (self):
        self.n_groups += 1

    def end_group (self):
        self.n_groups -= 1

        if self.n_groups == 0 and self.pending_record:
            self.record ()

    def record (self):
405
        if self.is_blocked ():
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
            return

        if self.n_groups == 0:
            state = tuple (source.get () for source in self.sources)

            if self.state is None:
                self.state = state
            else:
                self.pending_record = False

                delta = delta_encode (self.state, state)

                if delta == DELTA_SAME:
                    return

                self.undo_stack.append (delta_encode (self.state, state))
                self.redo_stack = []

                self.state = state

                self.notify ("can-undo")
                self.notify ("can-redo")
        else:
            self.pending_record = True

431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
    def update (self):
        if self.is_blocked ():
            return

        if self.n_groups == 0:
            state = tuple (source.get () for source in self.sources)

            for stack in self.undo_stack, self.redo_stack:
                if stack:
                    stack[-1] = delta_encode (delta_decode (stack[-1],
                                                            self.state),
                                              state)

            self.state = state
        else:
            self.pending_record = True

448
    def move (self, src, dest):
449
        self.block ()
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466

        state = src.pop ()

        for source, substate, prev_substate in \
            zip (self.sources, self.state, state):
            if prev_substate != DELTA_SAME:
                source.set (delta_decode (prev_substate, substate))

        state = delta_decode (state, self.state)

        dest.append (delta_encode (self.state, state))

        self.state = state

        self.notify ("can-undo")
        self.notify ("can-redo")

467
        self.unblock ()
468
469
470
471
472
473
474
475
476

    def undo (self):
        self.move (self.undo_stack, self.redo_stack)

    def redo (self):
        self.move (self.redo_stack, self.undo_stack)

history = History ()

477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
class SelectionOp (enum.Enum):
    REPLACE   = enum.auto ()
    ADD       = enum.auto ()
    SUBTRACT  = enum.auto ()
    INTERSECT = enum.auto ()
    XOR       = enum.auto ()

class Selection (GObject.GObject):
    __gsignals__ = {
        "changed":           (GObject.SIGNAL_RUN_FIRST, None, ()),
        "change-complete":   (GObject.SIGNAL_RUN_FIRST, None, ()),
        "highlight-changed": (GObject.SIGNAL_RUN_FIRST, None, ())
    }

    def __init__ (self, iter = ()):
        GObject.GObject.__init__ (self)

        self.selection  = set (iter)
        self.highlight  = None
        self.cursor     = None
        self.cursor_dir = 0

        self.pending_change_completion = False

501
502
503
504
505
506
    def __eq__ (self, other):
        return type (self)     == type (other)     and \
               self.selection  == other.selection  and \
               self.cursor     == other.cursor     and \
               self.cursor_dir == other.cursor_dir

507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
    def __str__ (self):
        n_sel = len (self.selection)

        if n_sel == 0 or n_sel == len (samples):
            return "All Samples"
        elif n_sel == 1:
            i, = self.selection

            return "Sample %d" % i
        else:
            sel = list (self.selection)

            sel.sort ()

            if all (sel[i] + 1 == sel[i + 1] for i in range (n_sel - 1)):
                return "Samples %d–%d" % (sel[0], sel[-1])
            else:
                return "%d Samples" % n_sel

    def copy (self):
        selection = Selection ()

        selection.highlight  = self.highlight
        selection.cursor     = self.cursor
        selection.cursor_dir = self.cursor_dir
        selection.selection  = self.selection.copy ()

        return selection

    def get_effective_selection (self):
        if self.selection:
            return self.selection
        else:
            return set (range (len (samples)))

    def select (self, selection, op = SelectionOp.REPLACE):
        if op == SelectionOp.REPLACE:
            self.selection = selection.copy ()
        elif op == SelectionOp.ADD:
            self.selection |= selection
        elif op == SelectionOp.SUBTRACT:
            self.selection -= selection
        elif op == SelectionOp.INTERSECT:
            self.selection &= selection
        elif op == SelectionOp.XOR:
            self.selection.symmetric_difference_update (selection)

        if len (self.selection) == 1:
            (self.cursor,) = self.selection
        else:
            self.cursor = None

        self.cursor_dir = 0

        self.pending_change_completion = True

        self.emit ("changed")

    def select_range (self, first, last, op = SelectionOp.REPLACE):
        if first > last:
            temp  = first
            first = last
            last  = temp

        first = max (first, 0)
        last  = min (last, len (samples) - 1)

        if first <= last:
            self.select (set (range (first, last + 1)), op)
        else:
            self.select (set (), op)

    def change_complete (self):
        if self.pending_change_completion:
            self.pending_change_completion = False

583
584
585
586
            history.start_group ()

            history.record ()

587
588
            self.emit ("change-complete")

589
590
            history.end_group ()

591
592
593
594
595
    def set_highlight (self, highlight):
        self.highlight = highlight

        self.emit ("highlight-changed")

596
597
598
599
600
601
602
603
604
605
606
607
608
609
    def source_get (self):
        return self.copy ()

    def source_set (self, selection):
        self.cursor     = selection.cursor
        self.cursor_dir = selection.cursor_dir
        self.selection  = selection.selection.copy ()

        self.emit ("changed")
        self.emit ("change-complete")

    def add_history_source (self):
        history.add_source (self.source_get, self.source_set)

610
selection = Selection ()
611
selection.add_history_source ()
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649

class FindSamplesPopover (Gtk.Popover):
    def __init__ (self, *args, **kwargs):
        Gtk.Popover.__init__ (self, *args, **kwargs)

        vbox = Gtk.Box (orientation  = Gtk.Orientation.VERTICAL,
                        border_width = 20,
                        spacing      = 8)
        self.add (vbox)
        vbox.show ()

        entry = Gtk.Entry (width_chars      = 40,
                           placeholder_text = "Python expression")
        self.entry = entry
        vbox.pack_start (entry, False, False, 0)
        entry.show ()

        entry.connect ("activate", self.find_samples)

        entry.get_buffer ().connect (
            "notify::text",
            lambda *args: self.entry.get_style_context ().remove_class ("error")
        )

        frame = Gtk.Frame (label       = "Selection",
                           shadow_type = Gtk.ShadowType.NONE)
        vbox.pack_start (frame, False, False, 8)
        frame.get_label_widget ().get_style_context ().add_class ("dim-label")
        frame.show ()

        vbox2 = Gtk.Box (orientation  = Gtk.Orientation.VERTICAL,
                         border_width = 8,
                         spacing      = 8)
        frame.add (vbox2)
        vbox2.show ()

        self.radios = []

650
        radio = Gtk.RadioButton.new_with_mnemonic (None, "_Replace")
651
652
653
654
        self.radios.append ((radio, SelectionOp.REPLACE))
        vbox2.pack_start (radio, False, False, 0)
        radio.show ()

655
        radio = Gtk.RadioButton.new_with_mnemonic_from_widget (radio, "_Add")
656
657
658
659
        self.radios.append ((radio, SelectionOp.ADD))
        vbox2.pack_start (radio, False, False, 0)
        radio.show ()

660
        radio = Gtk.RadioButton.new_with_mnemonic_from_widget (radio, "_Subtract")
661
662
663
664
        self.radios.append ((radio, SelectionOp.SUBTRACT))
        vbox2.pack_start (radio, False, False, 0)
        radio.show ()

665
        radio = Gtk.RadioButton.new_with_mnemonic_from_widget (radio, "_Intersect")
666
667
668
669
        self.radios.append ((radio, SelectionOp.INTERSECT))
        vbox2.pack_start (radio, False, False, 0)
        radio.show ()

670
        button = Gtk.Button.new_with_mnemonic ("_Find")
671
        vbox.pack_start (button, False, False, 0)
672
        button.set_halign (Gtk.Align.CENTER)
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
        button.show ()

        button.connect ("clicked", self.find_samples)

    def do_hide (self):
        self.entry.set_text ("")
        self.entry.get_style_context ().remove_class ("error")

        Gtk.Popover.do_hide (self)

    def find_samples (self, *args):
        def var_name (var):
            return var.replace ("-", "_")

        try:
            f = eval ("lambda thread, function, %s: %s" % (
                ", ".join (map (var_name, var_defs)),
                self.entry.get_text ()))
        except:
            self.entry.get_style_context ().add_class ("error")

            return

        sel = set ()

        for i in range (len (samples)):
            try:
                def thread (id, state = None):
                    for thread in samples[i].backtrace or []:
                        if (type (id) == int and id == thread.id) or \
703
704
                           (type (id) == str and thread.name and \
                            re.fullmatch (id, thread.name)):
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
                            if state is None or \
                               re.fullmatch (state, str (thread.state)):
                                return True

                    return False

                def function (name, exclusive = False):
                    for thread in samples[i].backtrace or []:
                        if exclusive:
                            if re.fullmatch (name, thread.frames[0].info.name):
                                return True
                        else:
                            for frame in thread.frames:
                                if re.fullmatch (name, frame.info.name):
                                    return True

                    return False

                if f (thread, function, **{
                    var_name (var): value.value
                    for var, value in samples[i].vars.items ()
                }):
                    sel.add (i)
            except:
                pass

        op = [op for radio, op in self.radios if radio.get_active ()][0]

        selection.select (sel, op)

        selection.change_complete ()

        self.hide ()

class CellRendererColorToggle (Gtk.CellRendererToggle):
    padding = 3

    color = GObject.Property (type = Gdk.RGBA, default = Gdk.RGBA (0, 0, 0))

    def do_render (self, cr, widget, background_area, cell_area, flags):
        state    = widget.get_state ()
        style    = widget.get_style_context ()
        bg_color = style.get_background_color (state)
        active   = self.get_property ("active")
        size     = max (min (cell_area.width, cell_area.height) -
                        2 * self.padding,
                        0)

        (r, g, b, a) = self.color

        if is_bright_color (bg_color):
            bg = (r, g, b)
            fg = (0.75 * r, 0.75 * g, 0.75 * b)
        else:
            bg = (0.75 * r, 0.75 * g, 0.75 * b)
            fg = (r, g, b)

        x = cell_area.x + (cell_area.width  - size) // 2
        y = cell_area.y + (cell_area.height - size) // 2

        cr.rectangle (x, y, size, size)

        if active:
            cr.set_source_rgba (*bg)
        else:
            Gdk.cairo_set_source_rgba (cr, bg_color)

        cr.fill_preserve ()

        cr.set_source_rgb (*fg)
        cr.set_line_width (2)
        cr.stroke ()

class VariableSet (Gtk.TreeView):
    class Store (Gtk.ListStore):
        NAME   = 0
        ACTIVE = 1
        COLOR  = 2

        def __init__ (self):
            Gtk.ListStore.__init__ (self, str, bool, Gdk.RGBA)

            for var in var_defs:
                i = self.append ((var, False, Gdk.RGBA (*var_defs[var].color)))

    def __init__ (self, *args, **kwargs):
        Gtk.TreeView.__init__ (self, *args, headers_visible = False, **kwargs)

        store = self.Store ()
        self.store = store
        self.set_model (store)

        col = Gtk.TreeViewColumn ()
        self.append_column (col)

        cell = CellRendererColorToggle ()
        col.pack_start (cell, False)
        col.add_attribute (cell, "active", store.ACTIVE)
        col.add_attribute (cell, "color", store.COLOR)

        cell.connect ("toggled", self.var_toggled)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, True)
        col.add_attribute (cell, "text", store.NAME)

    def var_toggled (self, cell, path):
        self.store[path][self.store.ACTIVE] = not cell.get_property ("active")

class SampleGraph (Gtk.DrawingArea):
    def __init__ (self, model = None, *args, **kwargs):
        Gtk.DrawingArea.__init__ (self, *args, can_focus = True, **kwargs)

        self.style_widget = Gtk.Entry ()

        self.model = model

        if model:
            model.connect ("row-changed", lambda *args: self.update ())

            self.update ()

        self.selection = None
        self.sel       = None

        selection.connect ("changed", self.selection_changed)
        selection.connect ("highlight-changed",
                           lambda selection: self.queue_draw ())

        self.add_events (Gdk.EventMask.BUTTON_PRESS_MASK   |
                         Gdk.EventMask.BUTTON_RELEASE_MASK |
                         Gdk.EventMask.KEY_PRESS_MASK      |
                         Gdk.EventMask.KEY_RELEASE_MASK)

        self.selection_changed (selection)

    def sample_to_x (self, i):
        if not samples:
            return None

        width     = self.get_allocated_width ()
        n_samples = max (len (samples), 2)

        return 1 + (width - 3) * i / (n_samples - 1)

    def sample_to_range (self, i):
        if not samples:
            return None

        width     = self.get_allocated_width ()
        n_samples = max (len (samples), 2)

        return (1 + math.floor ((width - 3) * (i - 0.5) / (n_samples - 1)),
                1 + math.ceil  ((width - 3) * (i + 0.5) / (n_samples - 1)))

    def x_to_sample (self, x):
        if not samples:
            return None

        width     = max (self.get_allocated_width (), 4)
        n_samples = len (samples)

        return round ((n_samples - 1) * (x - 1) / (width - 3))

    def update (self):
        if not samples or not self.model:
            return

        self.max_value = 1

        for row in self.model:
            var_name   = row[self.model.NAME]
            var_active = row[self.model.ACTIVE]

            if var_active:
880
881
882
883
884
885
886
887
                values = (sample.vars[var_name].value for sample in samples)
                values = filter (lambda x: x is not None, values)
                values = filter (math.isfinite,           values)

                try:
                    self.max_value = max (self.max_value, max (values))
                except:
                    pass
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942

        self.queue_draw ()

    def selection_changed (self, selection):
        if selection.selection:
            self.sel = list (selection.selection)
            self.sel.sort ()
        else:
            self.sel = None

        self.queue_draw ()

    def do_get_preferred_width (self):
        return (300, 300)

    def do_get_preferred_height (self):
        if self.model:
            return (32, 256)
        else:
            return (16, 16)

    def update_selection (self):
        sel = self.selection.copy ()

        i0 = self.selection_i0
        i1 = self.selection_i1

        if self.selection_range:
            swap = i0 > i1

            if swap:
                temp = i0
                i0   = i1
                i1   = temp

            n_samples = len (samples)

            while i0 > 0             and not samples[i0 - 1].markers: i0 -= 1
            while i1 < n_samples - 1 and not samples[i1 + 1].markers: i1 += 1

            if swap:
                temp = i0
                i0   = i1
                i1   = temp

        sel.select_range (i0, i1, self.selection_op)

        selection.select (sel.selection)

        selection.cursor     = i1
        selection.cursor_dir = i1 - i0

    def do_button_press_event (self, event):
        self.grab_focus ()

943
944
        if event.button == 1:
            i = self.x_to_sample (event.x)
945

946
947
            if i is None:
                return False
948

949
950
951
952
953
            self.selection       = selection.copy ()
            self.selection_i0    = i
            self.selection_i1    = i
            self.selection_op    = SelectionOp.REPLACE
            self.selection_range = event.type != Gdk.EventType.BUTTON_PRESS
954

955
            state = event.state & Gdk.ModifierType.MODIFIER_MASK
956

957
958
959
960
961
962
963
            if state == Gdk.ModifierType.SHIFT_MASK:
                self.selection_op = SelectionOp.ADD
            elif state == Gdk.ModifierType.CONTROL_MASK:
                self.selection_op = SelectionOp.SUBTRACT
            elif state == (Gdk.ModifierType.SHIFT_MASK |
                           Gdk.ModifierType.CONTROL_MASK):
                self.selection_op = SelectionOp.INTERSECT
964

965
            self.update_selection ()
966

967
968
969
            self.grab_add ()
        elif event.button == 3:
            selection.select (set ())
970

971
            self.grab_add ()
972
973
974
975

        return True

    def do_button_release_event (self, event):
976
977
        if event.button == 1 or event.button == 3:
            self.selection = None
978

979
            selection.change_complete ()
980

981
            self.grab_remove ()
982

983
            return True
984

985
        return False
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068

    def do_motion_notify_event (self, event):
        i = self.x_to_sample (event.x)

        selection.set_highlight (i)

        if self.selection and i is not None:
            self.selection_i1 = i

            self.update_selection ()

            return True

        return False

    def do_leave_notify_event (self, evnet):
        selection.set_highlight (None)

        return False

    def do_key_press_event (self, event):
        if event.keyval == Gdk.KEY_Left    or \
           event.keyval == Gdk.KEY_Right   or \
           event.keyval == Gdk.KEY_Home    or \
           event.keyval == Gdk.KEY_KP_Home or \
           event.keyval == Gdk.KEY_End     or \
           event.keyval == Gdk.KEY_KP_End:
            n_samples = len (samples)

            state = event.state & Gdk.ModifierType.MODIFIER_MASK

            op = SelectionOp.REPLACE

            if state == Gdk.ModifierType.SHIFT_MASK:
                op = SelectionOp.XOR

            cursor     = selection.cursor
            cursor_dir = selection.cursor_dir

            if event.keyval == Gdk.KEY_Left or \
               event.keyval == Gdk.KEY_Home or \
               event.keyval == Gdk.KEY_KP_Home:
                if selection.cursor is not None:
                    if cursor_dir <= 0 or op == SelectionOp.REPLACE:
                        cursor -= 1
                else:
                    cursor = n_samples - 1

                cursor_dir = -1
            elif event.keyval == Gdk.KEY_Right or \
                 event.keyval == Gdk.KEY_End   or \
                 event.keyval == Gdk.KEY_KP_End:
                if cursor is not None:
                    if cursor_dir >= 0 or op == SelectionOp.REPLACE:
                        cursor += 1
                else:
                    cursor = 0

                cursor_dir = +1

            if cursor < 0 or cursor >= n_samples:
                cursor = min (max (cursor, 0), n_samples - 1)

                selection.cursor     = cursor
                selection.cursor_dir = cursor_dir

                if op != SelectionOp.REPLACE:
                    return True

            i0 = cursor

            if event.keyval == Gdk.KEY_Home or \
               event.keyval == Gdk.KEY_KP_Home:
                cursor = 0
            elif event.keyval == Gdk.KEY_End or \
                 event.keyval == Gdk.KEY_KP_End:
                cursor = n_samples - 1

            if op == SelectionOp.REPLACE:
                i0 = cursor

            selection.select_range (i0, cursor, op)

1069
1070
1071
            if len (selection.selection) > 1:
                selection.cursor     = cursor
                selection.cursor_dir = cursor_dir
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100

            return True
        elif event.keyval == Gdk.KEY_Escape:
            selection.select (set ())

            return True

        return False

    def do_key_release_event (self, event):
        selection.change_complete ()

        return False

    def do_draw (self, cr):
        state           = self.get_state ()
        style           = (self.style_widget if self.model else
                           self).get_style_context ()
        (width, height) = (self.get_allocated_width  (),
                           self.get_allocated_height ())

        fg_color        = tuple (style.get_color (state))
        grid_color      = (*fg_color[:3], 0.25 * fg_color[3])
        highlight_color = grid_color
        selection_color = (*fg_color[:3], 0.15 * fg_color[3])

        Gtk.render_background (style, cr, 0, 0, width, height)

        if self.model:
1101
1102
            max_value = self.max_value
            vscale    = (height - 4) / max_value
1103
1104
1105
1106
1107
1108
1109

            cr.save ()

            cr.translate (0, height - 2)
            cr.scale (1, -1)

            first_sample = True
1110
            has_infinite = False
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123

            for row in self.model:
                var_name   = row[self.model.NAME]
                var_active = row[self.model.ACTIVE]

                if var_active:
                    is_boolean    = var_defs[var_name].type == "boolean"
                    is_continuous = not is_boolean

                    for i in range (len (samples)):
                        value = samples[i].vars[var_name].value

                        if value is not None:
1124
1125
1126
1127
1128
1129
1130
1131
1132
                            first_sample = False

                            if math.isinf (value):
                                first_sample = True
                                has_infinite = True

                                value = max_value
                            elif is_boolean:
                                value *= max_value
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160

                            y = value * vscale

                            if is_continuous:
                                x = self.sample_to_x (i)

                                if first_sample:
                                    cr.move_to (x, y)
                                else:
                                    cr.line_to (x, y)
                            else:
                                (x0, x1) = self.sample_to_range (i)

                                if first_sample:
                                    cr.move_to (x0, y)
                                else:
                                    cr.line_to (x0, y)

                                cr.line_to (x1, y)
                        else:
                            first_sample = True

                    (r, g, b) = var_defs[var_name].color

                    cr.set_source_rgb (r, g, b)
                    cr.set_line_width (2)
                    cr.stroke ()

1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
                    if has_infinite:
                        cr.save ()

                        for i in range (len (samples)):
                            value = samples[i].vars[var_name].value

                            if value is not None and math.isinf (value):
                                first_sample = False

                                y = max_value * vscale

                                if is_continuous:
                                    x = self.sample_to_x (i)

                                    if first_sample:
                                        cr.move_to (x, y)
                                    else:
                                        cr.line_to (x, y)
                                else:
                                    (x0, x1) = self.sample_to_range (i)

                                    if first_sample:
                                        cr.move_to (x0, y)
                                    else:
                                        cr.line_to (x0, y)

                                    cr.line_to (x1, y)
                            else:
                                first_sample = True

                        cr.set_dash ([6, 6], 0)
                        cr.stroke ()

                        cr.restore ()

1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
            cr.restore ()

            cr.set_line_width (1)

            cr.set_source_rgba (*grid_color)

            n_hgrid_lines = 4
            n_vgrid_lines = 1

            for i in range (n_hgrid_lines + 1):
                cr.move_to (0, round (i * (height - 1) / n_hgrid_lines) + 0.5)
                cr.rel_line_to (width, 0)

                cr.stroke ()

            for i in range (n_vgrid_lines + 1):
                cr.move_to (round (i * (width - 1) / n_vgrid_lines) + 0.5, 0)
                cr.rel_line_to (0, height)

                cr.stroke ()
        else:
            for i in range (len (samples)):
                if samples[i].markers:
                    (x0, x1) = self.sample_to_range (i)

                    cr.rectangle (x0, 0, x1 - x0, height)

            cr.set_source_rgba (*fg_color)
            cr.fill ()

        if selection.highlight is not None:
            (x0, x1) = self.sample_to_range (selection.highlight)

            cr.rectangle (x0, 0, x1 - x0, height)

            (r, g, b, a) = style.get_color (state)

            cr.set_source_rgba (*highlight_color)
            cr.fill ()

        if self.sel:
            def draw_selection ():
                x0 = self.sample_to_range (i0)[0]
                x1 = self.sample_to_range (i1)[1]

                cr.rectangle (x0, 0, x1 - x0, height)

                (r, g, b, a) = style.get_color (state)

                cr.set_source_rgba (*selection_color)
                cr.fill ()

            i0 = None

            for i in self.sel:
                if i0 is None:
                    i0 = i
                    i1 = i
                elif i == i1 + 1:
                    i1 = i
                else:
                    draw_selection ()

                    i0 = i
                    i1 = i

            if i0 is not None:
                draw_selection ()

class SampleGraphList (Gtk.Box):
    Item = namedtuple (
        "SampleGraphListGraph", ("widget",
                                 "model",
                                 "remove_button",
                                 "move_up_button",
                                 "move_down_button")
    )

    def __init__ (self, *args, **kwargs):
        Gtk.Box.__init__ (self,
                          *args,
                          orientation = Gtk.Orientation.VERTICAL,
                          **kwargs)

        self.items = []

        self.vset_size_group = Gtk.SizeGroup (
            mode = Gtk.SizeGroupMode.HORIZONTAL
        )

        hbox = Gtk.Box (orientation = Gtk.Orientation.HORIZONTAL)
        self.pack_start (hbox, False, False, 0)
        hbox.show ()

        empty = Gtk.DrawingArea ()
        hbox.pack_start (empty, False, True, 0)
        self.vset_size_group.add_widget (empty)
        empty.show ()

        graph = SampleGraph (has_tooltip = True)
        hbox.pack_start (graph, True, True, 0)
        graph.show ()

        graph.connect ("query-tooltip", self.graph_query_tooltip)

        separator = Gtk.Separator (orientation = Gtk.Orientation.HORIZONTAL)
        self.pack_start (separator, False, False, 0)
        separator.show ()

        vbox = Gtk.Box (orientation = Gtk.Orientation.VERTICAL)
        self.items_vbox = vbox
        self.pack_start (vbox, False, False, 0)
        vbox.show ()

        self.add_item (0)

    def update_items (self):
        for widget in self.items_vbox.get_children ():
            self.items_vbox.remove (widget)

        i = 0

        for item in self.items:
            if i > 0:
                separator = Gtk.Separator (
                    orientation = Gtk.Orientation.HORIZONTAL
                )
                self.items_vbox.pack_start (separator, False, False, 0)
                separator.show ()

            self.items_vbox.pack_start (item.widget, False, False, 0)

            item.remove_button.set_sensitive    (len (self.items) > 1)
            item.move_up_button.set_sensitive   (i > 0)
            item.move_down_button.set_sensitive (i < len (self.items) - 1)

            i += 1

    def add_item (self, i):
        hbox = Gtk.Box (orientation = Gtk.Orientation.HORIZONTAL)
        hbox.show ()

        vbox = Gtk.Box (orientation = Gtk.Orientation.VERTICAL)
        hbox.pack_start (vbox, False, True, 0)
        self.vset_size_group.add_widget (vbox)
        vbox.show ()

        scroll = Gtk.ScrolledWindow (
            hscrollbar_policy = Gtk.PolicyType.NEVER,
            vscrollbar_policy = Gtk.PolicyType.AUTOMATIC
        )
        vbox.pack_start (scroll, True, True, 0)
        scroll.show ()

        vset = VariableSet ()
        scroll.add (vset)
        vset.show ()

        buttons = Gtk.ButtonBox (orientation = Gtk.Orientation.HORIZONTAL)
        vbox.pack_start (buttons, False, False, 0)
        buttons.set_layout (Gtk.ButtonBoxStyle.EXPAND)
        buttons.show ()

        button = Gtk.Button.new_from_icon_name ("list-add-symbolic",
                                                Gtk.IconSize.BUTTON)
        add_button = button
        buttons.add (button)
        button.show ()

        button = Gtk.Button.new_from_icon_name ("list-remove-symbolic",
                                                Gtk.IconSize.BUTTON)
        remove_button = button
        buttons.add (button)
        button.show ()

        button = Gtk.Button.new_from_icon_name ("go-up-symbolic",
                                                Gtk.IconSize.BUTTON)
        move_up_button = button
        buttons.add (button)
        button.show ()

        button = Gtk.Button.new_from_icon_name ("go-down-symbolic",
                                                Gtk.IconSize.BUTTON)
        move_down_button = button
        buttons.add (button)
        button.show ()

        graph = SampleGraph (vset.get_model (), has_tooltip = True)
        hbox.pack_start (graph, True, True, 0)
        graph.show ()

        graph.connect ("query-tooltip", self.graph_query_tooltip)

        item = self.Item (
            widget           = hbox,
            model            = vset.get_model (),
            remove_button    = remove_button,
            move_up_button   = move_up_button,
            move_down_button = move_down_button
        )
        self.items.insert (i, item)

        add_button.connect       ("clicked",
                                  lambda *args: self.add_item (
                                                    self.items.index (item) + 1
                                                ))
        remove_button.connect    ("clicked",
                                  lambda *args: self.remove_item (
                                                    self.items.index (item)
                                                ))
        move_up_button.connect   ("clicked",
                                  lambda *args: self.move_item (
                                                    self.items.index (item),
                                                    -1
                                                ))
        move_down_button.connect ("clicked",
                                  lambda *args: self.move_item (
                                                    self.items.index (item),
                                                    +1
                                                ))

        self.update_items ()

    def remove_item (self, i):
        del self.items[i]

        self.update_items ()

    def move_item (self, i, offset):
        item = self.items[i]
        del self.items[i]
        self.items.insert (i + offset, item)

        self.update_items ()

    def graph_query_tooltip (self, graph, x, y, keyboard_mode, tooltip):
        if keyboard_mode:
            return False

        i = graph.x_to_sample (x)

        if i is None or i < 0 or i >= len (samples):
            return False

        grid = Gtk.Grid (column_spacing = 4)
        tooltip.set_custom (grid)
        grid.show ()

        row = 0

        label = Gtk.Label ()
        grid.attach (label, 0, row, 2, 1)
        label.set_markup ("<b>Sample %d</b>" % i)
        label.show ()

        row += 1

        label = Gtk.Label ()
        grid.attach (label, 0, row, 2, 1)
        label.set_markup ("<sub>%s</sub>" %
                          format_duration (samples[i].t / 1000000))
        label.get_style_context ().add_class ("dim-label")
        label.show ()

        row += 1

        for item in self.items:
            model = item.model

            vars = tuple (var[model.NAME] for var in model if var[model.ACTIVE])

            if not vars:
                continue

            separator = Gtk.Separator (orientation = Gtk.Orientation.HORIZONTAL)
            grid.attach (separator, 0, row, 2, 1)
            separator.show ()

            row += 1

            for var in vars:
                color = format_color (var_defs[var].color)

                label = Gtk.Label (halign = Gtk.Align.START)
                grid.attach (label, 0, row, 1, 1)
                label.set_markup (
                    "<span color=\"%s\"><b>%s</b></span>" % (color, var)
                )
                label.show ()

                value = samples[i].vars[var].value
                text  = var_types[var_defs[var].type].format (value) \
                        if value is not None else "N/A"

                label = Gtk.Label (text, halign = Gtk.Align.END)
                grid.attach (label, 1, row, 1, 1)
                label.show ()

                row += 1

        markers = samples[i].markers

        if markers:
            separator = Gtk.Separator (orientation = Gtk.Orientation.HORIZONTAL)
            grid.attach (separator, 0, row, 2, 1)
            separator.show ()

            row += 1

            for marker in markers:
                label = Gtk.Label (halign = Gtk.Align.START)
                grid.attach (label, 0, row, 1, 1)
                label.set_markup ("<b>Marker %d</b>" % (marker.id))
                label.show ()

                if marker.description:
                    label = Gtk.Label (marker.description,
                                       halign = Gtk.Align.END)
                    grid.attach (label, 1, row, 1, 1)
                    label.show ()

                row += 1

        return True

class InformationViewer (Gtk.ScrolledWindow):
    class Store (Gtk.ListStore):
        NAME  = 0
        VALUE = 1

        def __init__ (self):
            Gtk.ListStore.__init__ (self, str, str)

    def __init__ (self, *args, **kwargs):
        Gtk.ScrolledWindow.__init__ (
            self,
            *args,
            hscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
            vscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
            **kwargs
        )

        vbox = Gtk.Box (orientation  = Gtk.Orientation.VERTICAL,
                        border_width = 32,
                        margin_left  = 64,
                        margin_right = 64,
                        spacing      = 32)
        self.add (vbox)
        vbox.show ()

        def add_element (element):
            name    = {
                "params":       "Log Parameters",
                "gimp-version": "GIMP Version",
                "env":          "Environment",
                "gegl-config":  "GEGL Config"
            }.get (element.tag, element.tag)
            text    = element.text.strip ()
            n_items = len (element)

            if not text and n_items == 0:
                return

            vbox2 = Gtk.Box (orientation = Gtk.Orientation.VERTICAL,
                             spacing     = 16)
            vbox.pack_start (vbox2, False, False, 0)
            vbox2.show ()

            label = Gtk.Label (xalign = 0)
            vbox2.pack_start (label, False, False, 0)
            label.set_markup ("<b>%s</b>" % name)
            label.show ()

            frame = Gtk.Frame (shadow_type = Gtk.ShadowType.IN)
            vbox2.pack_start (frame, False, False, 0)
            frame.show ()

            if text:
                scrolled = Gtk.ScrolledWindow (
                    hscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
                    vscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
                    height_request    = 400
                )
                frame.add (scrolled)
                scrolled.show ()

                text = Gtk.TextView (editable      = False,
                                     monospace     = True,
                                     wrap_mode     = Gtk.WrapMode.WORD,
                                     left_margin   = 16,
                                     right_margin  = 16,
                                     top_margin    = 16,
                                     bottom_margin = 16)
                scrolled.add (text)
                text.get_buffer ().set_text (element.text.strip (), -1)
                text.show ()
            else:
                scrolled = Gtk.ScrolledWindow (
                    hscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
                    vscrollbar_policy = Gtk.PolicyType.NEVER
                )
                frame.add (scrolled)
                scrolled.show ()

                store = self.Store ()

                for item in element:
                    store.append ((item.tag, item.text.strip ()))

                tree = Gtk.TreeView (model = store)
                scrolled.add (tree)
                tree.show ()

                col = Gtk.TreeViewColumn (title = "Name")
                tree.append_column (col)

                cell = Gtk.CellRendererText ()
                col.pack_start (cell, False)
                col.add_attribute (cell, "text", store.NAME)

                col = Gtk.TreeViewColumn (title = "Value")
                tree.append_column (col)
                col.set_alignment (0.5)

                cell = Gtk.CellRendererText (xalign = 1)
                col.pack_start (cell, False)
                col.add_attribute (cell, "text", store.VALUE)

        params = log.find ("params")

        if params:
            add_element (params)

        info = log.find ("info")

        if info:
            for element in info:
                add_element (element)

1635
class VariablesViewer (Gtk.ScrolledWindow):
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
    class Store (Gtk.ListStore):
        NAME        = 0
        COLOR       = 1
        VALUE       = 2
        RAW         = 3
        MIN         = 4
        MAX         = 5
        MEDIAN      = 6
        MEAN        = 7
        STDEV       = 8
        LAST_COLUMN = 9

        def __init__ (self):
            n_stats = self.LAST_COLUMN - self.COLOR

            Gtk.ListStore.__init__ (self,
                                    *((str, Gdk.RGBA) + n_stats * (str,)))
            enum.Enum.__init__ (self)

            for var in var_defs:
                i = self.append (((var,
                                   Gdk.RGBA (*var_defs[var].color)) +
                                  n_stats * ("",)))

    def __init__ (self, *args, **kwargs):
        Gtk.Box.__init__ (self,
                          *args,
1663
1664
                          hscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
                          vscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
1665
1666
                          **kwargs)

1667
        self.needs_update = True
1668
1669
1670
1671
1672

        store = self.Store ()
        self.store = store

        tree = Gtk.TreeView (model = store)
1673
        self.add (tree)
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
        tree.show ()

        self.single_sample_cols = []
        self.multi_sample_cols  = []

        col = Gtk.TreeViewColumn (title = "Variable")
        tree.append_column (col)
        col.set_resizable (True)

        cell = CellRendererColorToggle (active = True)
        col.pack_start (cell, False)
        col.add_attribute (cell, "color", store.COLOR)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", store.NAME)

        def add_value_column (title, column, single_sample):
            col = Gtk.TreeViewColumn (title = title)
            tree.append_column (col)
            col.set_resizable (True)
            col.set_alignment (0.5)

            cell = Gtk.CellRendererText (xalign = 1)
            col.pack_start (cell, False)
            col.add_attribute (cell, "text", column)

            if single_sample:
                self.single_sample_cols.append (col)
            else:
                self.multi_sample_cols.append (col)

        add_value_column ("Value",     store.VALUE,  True)
        add_value_column ("Raw",       store.RAW,    True)
        add_value_column ("Min",       store.MIN,    False)
        add_value_column ("Max",       store.MAX,    False)
        add_value_column ("Median",    store.MEDIAN, False)
        add_value_column ("Mean",      store.MEAN,   False)
        add_value_column ("Std. Dev.", store.STDEV,  False)

        col = Gtk.TreeViewColumn ()
        tree.append_column (col)

        selection.connect ("change-complete", self.selection_change_complete)

1719
1720
1721
1722
1723
    def update (self):
        if not self.needs_update:
            return

        self.needs_update = False
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770

        sel   = selection.get_effective_selection ()
        n_sel = len (sel)

        if n_sel == 1:
            i, = sel

            for row in self.store:
                var_name = row[self.store.NAME]

                var      = samples[i].vars[var_name]
                var_type = var_types[var_defs[var_name].type]

                row[self.store.VALUE] = var_type.format (var.value)
                row[self.store.RAW]   = var.raw if var.raw is not None \
                                        else "N/A"
        else:
            for row in self.store:
                var_name = row[self.store.NAME]

                var_type = var_types[var_defs[var_name].type]

                vals = (samples[i].vars[var_name].value for i in sel)
                vals = tuple (val for val in vals if val is not None)

                if vals:
                    min_val = min               (vals)
                    max_val = max               (vals)
                    median  = statistics.median (vals)
                    mean    = statistics.mean   (vals)
                    stdev   = statistics.pstdev (vals, mean)

                    row[self.store.MIN]    = var_type.format         (min_val)
                    row[self.store.MAX]    = var_type.format         (max_val)
                    row[self.store.MEDIAN] = var_type.format         (median)
                    row[self.store.MEAN]   = var_type.format_numeric (mean)
                    row[self.store.STDEV]  = var_type.format_numeric (stdev)
                else:
                    row[self.store.MIN]    = \
                    row[self.store.MAX]    = \
                    row[self.store.MEDIAN] = \
                    row[self.store.MEAN]   = \
                    row[self.store.STDEV]  = var_type.format (None)

        for col in self.single_sample_cols: col.set_visible (n_sel == 1)
        for col in self.multi_sample_cols:  col.set_visible (n_sel > 1)

1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
    def do_map (self):
        self.update ()

        Gtk.ScrolledWindow.do_map (self)

    def selection_change_complete (self, selection):
        self.needs_update = True

        if self.get_mapped ():
            self.update ()

1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
class BacktraceViewer (Gtk.Box):
    class ThreadStore (Gtk.ListStore):
        INDEX = 0
        ID    = 1
        NAME  = 2
        STATE = 3

        def __init__ (self):
            Gtk.ListStore.__init__ (self, int, int, str, str)

    class FrameStore (Gtk.ListStore):
        ID       = 0
        ADDRESS  = 1
        OBJECT   = 2
        FUNCTION = 3
        OFFSET   = 4
        SOURCE   = 5
        LINE     = 6

        def __init__ (self):
            Gtk.ListStore.__init__ (self, int, str, str, str, str, str, str)

1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
    class CellRendererViewSource (Gtk.CellRendererPixbuf):
        file = GObject.Property (type = Gio.File, default = None)
        line = GObject.Property (type = int,      default = 0)

        def __init__ (self, *args, **kwargs):
            Gtk.CellRendererPixbuf.__init__ (
                self,
                *args,
                icon_name = "text-x-generic-symbolic",
                mode      = Gtk.CellRendererMode.ACTIVATABLE,
                **kwargs)

            self.connect ("notify::file",
                          lambda *args:
                              self.set_property ("visible", bool (self.file)))

        def do_activate (self, event, widget, path, *args):
            if self.file:
1822
                run_editor (self.file, self.line)
1823
1824
1825
1826
1827

                return True

            return False

1828
1829
1830
1831
1832
1833
    def __init__ (self, *args, **kwargs):
        Gtk.Box.__init__ (self,
                          *args,
                          orientation = Gtk.Orientation.HORIZONTAL,
                          **kwargs)

1834
1835
        self.needs_update = True

1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
        vbox = Gtk.Box (orientation = Gtk.Orientation.VERTICAL)
        self.pack_start (vbox, False, False, 0)
        vbox.show ()

        header = Gtk.HeaderBar (title = "Threads", has_subtitle = False)
        vbox.pack_start (header, False, False, 0)
        header.show ()

        scrolled = Gtk.ScrolledWindow (
            hscrollbar_policy = Gtk.PolicyType.NEVER,
            vscrollbar_policy = Gtk.PolicyType.AUTOMATIC
        )
        vbox.pack_start (scrolled, True, True, 0)
        scrolled.show ()

        store = self.ThreadStore ()
        self.thread_store = store

        tree = Gtk.TreeView (model = store)
        self.thread_tree = tree
        scrolled.add (tree)
        tree.set_search_column (store.NAME)
        tree.show ()

        tree.connect ("row-activated", self.threads_row_activated)

        tree.get_selection ().connect ("changed",
                                       self.threads_selection_changed)

        col = Gtk.TreeViewColumn (title = "ID")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText (xalign = 1)
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.ThreadStore.ID)

        col = Gtk.TreeViewColumn (title = "Name")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.ThreadStore.NAME)

        col = Gtk.TreeViewColumn (title = "State")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.ThreadStore.STATE)

        separator = Gtk.Separator (orientation = Gtk.Orientation.VERTICAL)
        self.pack_start (separator, False, False, 0)
        separator.show ()

        vbox = Gtk.Box (orientation = Gtk.Orientation.VERTICAL)
        self.pack_start (vbox, True, True, 0)
        vbox.show ()

        header = Gtk.HeaderBar (title = "Stack", has_subtitle = False)
        vbox.pack_start (header, False, False, 0)
        header.show ()

        scrolled = Gtk.ScrolledWindow (
            hscrollbar_policy = Gtk.PolicyType.AUTOMATIC,
            vscrollbar_policy = Gtk.PolicyType.AUTOMATIC
        )
        vbox.pack_start (scrolled, True, True, 0)
        scrolled.show ()

        store = self.FrameStore ()
        self.frame_store = store

1911
        tree = Gtk.TreeView (model = store, has_tooltip = True)
1912
1913
1914
1915
1916
        scrolled.add (tree)
        tree.set_search_column (store.FUNCTION)
        tree.show ()

        tree.connect ("row-activated", self.frames_row_activated)
1917
1918
1919
1920
1921
1922
1923
1924
        tree.connect ("query-tooltip", self.frames_query_tooltip)

        def format_filename_col (tree_col, cell, model, iter, col):
            object = model[iter][col]

            cell.set_property ("text", get_basename (object) if object else "")

        self.tooltip_columns = {}
1925
1926
1927
1928
1929

        col = Gtk.TreeViewColumn (title = "#")
        tree.append_column (col)
        col.set_resizable (True)

1930
        cell = Gtk.CellRendererText (xalign = 1)
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.FrameStore.ID)

        col = Gtk.TreeViewColumn (title = "Address")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText (xalign = 1)
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.FrameStore.ADDRESS)

        col = Gtk.TreeViewColumn (title = "Object")
1943
        self.tooltip_columns[col] = store.OBJECT
1944
1945
1946
1947
1948
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, False)
1949
        col.set_cell_data_func (cell, format_filename_col, store.OBJECT)
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967

        col = Gtk.TreeViewColumn (title = "Function")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.FrameStore.FUNCTION)

        col = Gtk.TreeViewColumn (title = "Offset")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText (xalign = 1)
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.FrameStore.OFFSET)

        col = Gtk.TreeViewColumn (title = "Source")
1968
        self.tooltip_columns[col] = store.SOURCE
1969
1970
1971
1972
1973
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText ()
        col.pack_start (cell, False)
1974
        col.set_cell_data_func (cell, format_filename_col, store.SOURCE)
1975
1976
1977
1978
1979
1980
1981
1982
1983

        col = Gtk.TreeViewColumn (title = "Line")
        tree.append_column (col)
        col.set_resizable (True)

        cell = Gtk.CellRendererText (xalign = 1)
        col.pack_start (cell, False)
        col.add_attribute (cell, "text", self.FrameStore.LINE)

1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
        def format_view_source_col (tree_col, cell, model, iter, cols):
            filename = model[iter][cols[0]] or None
            line     = model[iter][cols[1]] or "0"

            cell.set_property ("file", filename and find_file (filename))
            cell.set_property ("line", int (line))

        def format_view_source_tooltip (row):
            filename = row[store.SOURCE]

            if filename:
                file = find_file (filename)

                if file:
                    return file.get_path ()

            return None

2002
        col = Gtk.TreeViewColumn ()
2003
        self.tooltip_columns[col] = format_view_source_tooltip
2004
2005
        tree.append_column (col)

2006
2007
2008
2009
2010
        cell = self.CellRendererViewSource (xalign = 0)
        col.pack_start (cell, False)
        col.set_cell_data_func (cell, format_view_source_col, (store.SOURCE,
                                                               store.LINE))

2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
        selection.connect ("change-complete", self.selection_change_complete)

    @GObject.Property (type = bool, default = False)
    def available (self):
        sel = selection.get_effective_selection ()

        if len (sel) == 1:
            i, = sel

            return bool (samples[i].backtrace)

        return False

2024
2025
2026
2027
2028
2029
    def update (self):
        if not self.needs_update or not self.available:
            return

        self.needs_update = False

2030
2031
2032
2033
2034
2035
2036
        tid = None

        sel_rows = self.thread_tree.get_selection ().get_selected_rows ()[1]

        if sel_rows:
            tid = self.thread_store[sel_rows[0]][self.ThreadStore.ID]

2037
        i, = selection.get_effective_selection ()
2038

2039
        self.thread_store.clear ()
2040

2041
2042
        for t in range (len (samples[i].backtrace)):
            thread = samples[i].backtrace[t]
2043

2044
2045
2046
2047
2048
2049
2050
2051
2052
            iter = self.thread_store.append (
                (t, thread.id, thread.name, str (thread.state))
            )

            if thread.id == tid:
                self.thread_tree.get_selection ().select_iter (iter)

    def do_map (self):
        self.update ()
2053

2054
2055
2056
2057
2058
2059
2060
        Gtk.Box.do_map (self)

    def selection_change_complete (self, selection):
        self.needs_update = True

        if self.get_mapped ():
            self.update ()
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120