-
-
Notifications
You must be signed in to change notification settings - Fork 1.9k
/
Copy pathdragbox.js
1261 lines (1088 loc) · 44.2 KB
/
dragbox.js
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
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
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
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
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
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
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
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
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
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
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
703
704
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
880
881
882
883
884
885
886
887
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
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**
* Copyright 2012-2020, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
var d3 = require('d3');
var tinycolor = require('tinycolor2');
var supportsPassive = require('has-passive-events');
var Registry = require('../../registry');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var Fx = require('../../components/fx');
var Axes = require('./axes');
var setCursor = require('../../lib/setcursor');
var dragElement = require('../../components/dragelement');
var FROM_TL = require('../../constants/alignment').FROM_TL;
var clearGlCanvases = require('../../lib/clear_gl_canvases');
var redrawReglTraces = require('../../plot_api/subroutines').redrawReglTraces;
var Plots = require('../plots');
var getFromId = require('./axis_ids').getFromId;
var prepSelect = require('./select').prepSelect;
var clearSelect = require('./select').clearSelect;
var selectOnClick = require('./select').selectOnClick;
var scaleZoom = require('./scale_zoom');
var constants = require('./constants');
var MINDRAG = constants.MINDRAG;
var MINZOOM = constants.MINZOOM;
// flag for showing "doubleclick to zoom out" only at the beginning
var SHOWZOOMOUTTIP = true;
// dragBox: create an element to drag one or more axis ends
// inputs:
// plotinfo - which subplot are we making dragboxes on?
// x,y,w,h - left, top, width, height of the box
// ns - how does this drag the vertical axis?
// 'n' - top only
// 's' - bottom only
// 'ns' - top and bottom together, difference unchanged
// ew - same for horizontal axis
function makeDragBox(gd, plotinfo, x, y, w, h, ns, ew) {
// mouseDown stores ms of first mousedown event in the last
// `gd._context.doubleClickDelay` ms on the drag bars
// numClicks stores how many mousedowns have been seen
// within `gd._context.doubleClickDelay` so we can check for click or doubleclick events
// dragged stores whether a drag has occurred, so we don't have to
// redraw unnecessarily, ie if no move bigger than MINDRAG or MINZOOM px
var zoomlayer = gd._fullLayout._zoomlayer;
var isMainDrag = (ns + ew === 'nsew');
var singleEnd = (ns + ew).length === 1;
// main subplot x and y (i.e. found in plotinfo - the main ones)
var xa0, ya0;
// {ax._id: ax} hash objects
var xaHash, yaHash;
// xaHash/yaHash values (arrays)
var xaxes, yaxes;
// main axis offsets
var xs, ys;
// main axis lengths
var pw, ph;
// contains keys 'xaHash', 'yaHash', 'xaxes', and 'yaxes'
// which are the x/y {ax._id: ax} hash objects and their values
// for linked axis relative to this subplot
var links;
// similar to `links` but for matching axes
var matches;
// set to ew/ns val when active, set to '' when inactive
var xActive, yActive;
// are all axes in this subplot are fixed?
var allFixedRanges;
// do we need to edit x/y ranges?
var editX, editY;
// graph-wide optimization flags
var hasScatterGl, hasSplom, hasSVG;
// collected changes to be made to the plot by relayout at the end
var updates;
function recomputeAxisLists() {
xa0 = plotinfo.xaxis;
ya0 = plotinfo.yaxis;
pw = xa0._length;
ph = ya0._length;
xs = xa0._offset;
ys = ya0._offset;
xaHash = {};
xaHash[xa0._id] = xa0;
yaHash = {};
yaHash[ya0._id] = ya0;
// if we're dragging two axes at once, also drag overlays
if(ns && ew) {
var overlays = plotinfo.overlays;
for(var i = 0; i < overlays.length; i++) {
var xa = overlays[i].xaxis;
xaHash[xa._id] = xa;
var ya = overlays[i].yaxis;
yaHash[ya._id] = ya;
}
}
xaxes = hashValues(xaHash);
yaxes = hashValues(yaHash);
xActive = isDirectionActive(xaxes, ew);
yActive = isDirectionActive(yaxes, ns);
allFixedRanges = !yActive && !xActive;
links = calcLinks(gd, gd._fullLayout._axisConstraintGroups, xaHash, yaHash);
matches = calcLinks(gd, gd._fullLayout._axisMatchGroups, xaHash, yaHash);
editX = ew || links.isSubplotConstrained || matches.isSubplotConstrained;
editY = ns || links.isSubplotConstrained || matches.isSubplotConstrained;
var fullLayout = gd._fullLayout;
hasScatterGl = fullLayout._has('scattergl');
hasSplom = fullLayout._has('splom');
hasSVG = fullLayout._has('svg');
}
recomputeAxisLists();
var cursor = getDragCursor(yActive + xActive, gd._fullLayout.dragmode, isMainDrag);
var dragger = makeRectDragger(plotinfo, ns + ew + 'drag', cursor, x, y, w, h);
// still need to make the element if the axes are disabled
// but nuke its events (except for maindrag which needs them for hover)
// and stop there
if(allFixedRanges && !isMainDrag) {
dragger.onmousedown = null;
dragger.style.pointerEvents = 'none';
return dragger;
}
var dragOptions = {
element: dragger,
gd: gd,
plotinfo: plotinfo
};
dragOptions.prepFn = function(e, startX, startY) {
var dragModePrev = dragOptions.dragmode;
var dragModeNow = gd._fullLayout.dragmode;
if(dragModeNow !== dragModePrev) {
dragOptions.dragmode = dragModeNow;
}
recomputeAxisLists();
if(!allFixedRanges) {
if(isMainDrag) {
// main dragger handles all drag modes, and changes
// to pan (or to zoom if it already is pan) on shift
if(e.shiftKey) {
if(dragModeNow === 'pan') dragModeNow = 'zoom';
else if(!isSelectOrLasso(dragModeNow)) dragModeNow = 'pan';
} else if(e.ctrlKey) {
dragModeNow = 'pan';
}
} else {
// all other draggers just pan
dragModeNow = 'pan';
}
}
if(dragModeNow === 'lasso') dragOptions.minDrag = 1;
else dragOptions.minDrag = undefined;
if(isSelectOrLasso(dragModeNow)) {
dragOptions.xaxes = xaxes;
dragOptions.yaxes = yaxes;
// this attaches moveFn, clickFn, doneFn on dragOptions
prepSelect(e, startX, startY, dragOptions, dragModeNow);
} else {
dragOptions.clickFn = clickFn;
if(isSelectOrLasso(dragModePrev)) {
// TODO Fix potential bug
// Note: clearing / resetting selection state only happens, when user
// triggers at least one interaction in pan/zoom mode. Otherwise, the
// select/lasso outlines are deleted (in plots.js.cleanPlot) but the selection
// cache isn't cleared. So when the user switches back to select/lasso and
// 'adds to a selection' with Shift, the "old", seemingly removed outlines
// are redrawn again because the selection cache still holds their coordinates.
// However, this isn't easily solved, since plots.js would need
// to have a reference to the dragOptions object (which holds the
// selection cache).
clearAndResetSelect();
}
if(!allFixedRanges) {
if(dragModeNow === 'zoom') {
dragOptions.moveFn = zoomMove;
dragOptions.doneFn = zoomDone;
// zoomMove takes care of the threshold, but we need to
// minimize this so that constrained zoom boxes will flip
// orientation at the right place
dragOptions.minDrag = 1;
zoomPrep(e, startX, startY);
} else if(dragModeNow === 'pan') {
dragOptions.moveFn = plotDrag;
dragOptions.doneFn = dragTail;
}
}
}
gd._fullLayout._redrag = function() {
var dragDataNow = gd._dragdata;
if(dragDataNow && dragDataNow.element === dragger) {
var dragModeNow = gd._fullLayout.dragmode;
if(!isSelectOrLasso(dragModeNow)) {
recomputeAxisLists();
updateSubplots([0, 0, pw, ph]);
dragOptions.moveFn(dragDataNow.dx, dragDataNow.dy);
}
// TODO should we try to "re-select" under select/lasso modes?
// probably best to wait for https://github.com/plotly/plotly.js/issues/1851
}
};
};
function clearAndResetSelect() {
// clear selection polygon cache (if any)
dragOptions.plotinfo.selection = false;
// clear selection outlines
clearSelect(gd);
}
function clickFn(numClicks, evt) {
var clickmode = gd._fullLayout.clickmode;
removeZoombox(gd);
if(numClicks === 2 && !singleEnd) doubleClick();
if(isMainDrag) {
if(clickmode.indexOf('select') > -1) {
selectOnClick(evt, gd, xaxes, yaxes, plotinfo.id, dragOptions);
}
if(clickmode.indexOf('event') > -1) {
Fx.click(gd, evt, plotinfo.id);
}
} else if(numClicks === 1 && singleEnd) {
var ax = ns ? ya0 : xa0;
var end = (ns === 's' || ew === 'w') ? 0 : 1;
var attrStr = ax._name + '.range[' + end + ']';
var initialText = getEndText(ax, end);
var hAlign = 'left';
var vAlign = 'middle';
if(ax.fixedrange) return;
if(ns) {
vAlign = (ns === 'n') ? 'top' : 'bottom';
if(ax.side === 'right') hAlign = 'right';
} else if(ew === 'e') hAlign = 'right';
if(gd._context.showAxisRangeEntryBoxes) {
d3.select(dragger)
.call(svgTextUtils.makeEditable, {
gd: gd,
immediate: true,
background: gd._fullLayout.paper_bgcolor,
text: String(initialText),
fill: ax.tickfont ? ax.tickfont.color : '#444',
horizontalAlign: hAlign,
verticalAlign: vAlign
})
.on('edit', function(text) {
var v = ax.d2r(text);
if(v !== undefined) {
Registry.call('_guiRelayout', gd, attrStr, v);
}
});
}
}
}
dragElement.init(dragOptions);
// x/y px position at start of drag
var x0, y0;
// bbox object of the zoombox
var box;
// luminance of bg behind zoombox
var lum;
// zoombox path outline
var path0;
// is zoombox dimmed (during drag)
var dimmed;
// 'x'-only, 'y' or 'xy' zooming
var zoomMode;
// zoombox d3 selection
var zb;
// zoombox corner d3 selection
var corners;
// zoom takes over minDrag, so it also has to take over gd._dragged
var zoomDragged;
function zoomPrep(e, startX, startY) {
var dragBBox = dragger.getBoundingClientRect();
x0 = startX - dragBBox.left;
y0 = startY - dragBBox.top;
box = {l: x0, r: x0, w: 0, t: y0, b: y0, h: 0};
lum = gd._hmpixcount ?
(gd._hmlumcount / gd._hmpixcount) :
tinycolor(gd._fullLayout.plot_bgcolor).getLuminance();
path0 = 'M0,0H' + pw + 'V' + ph + 'H0V0';
dimmed = false;
zoomMode = 'xy';
zoomDragged = false;
zb = makeZoombox(zoomlayer, lum, xs, ys, path0);
corners = makeCorners(zoomlayer, xs, ys);
}
function zoomMove(dx0, dy0) {
if(gd._transitioningWithDuration) {
return false;
}
var x1 = Math.max(0, Math.min(pw, dx0 + x0));
var y1 = Math.max(0, Math.min(ph, dy0 + y0));
var dx = Math.abs(x1 - x0);
var dy = Math.abs(y1 - y0);
box.l = Math.min(x0, x1);
box.r = Math.max(x0, x1);
box.t = Math.min(y0, y1);
box.b = Math.max(y0, y1);
function noZoom() {
zoomMode = '';
box.r = box.l;
box.t = box.b;
corners.attr('d', 'M0,0Z');
}
if(links.isSubplotConstrained) {
if(dx > MINZOOM || dy > MINZOOM) {
zoomMode = 'xy';
if(dx / pw > dy / ph) {
dy = dx * ph / pw;
if(y0 > y1) box.t = y0 - dy;
else box.b = y0 + dy;
} else {
dx = dy * pw / ph;
if(x0 > x1) box.l = x0 - dx;
else box.r = x0 + dx;
}
corners.attr('d', xyCorners(box));
} else {
noZoom();
}
} else if(matches.isSubplotConstrained) {
if(dx > MINZOOM || dy > MINZOOM) {
zoomMode = 'xy';
var r0 = Math.min(box.l / pw, (ph - box.b) / ph);
var r1 = Math.max(box.r / pw, (ph - box.t) / ph);
box.l = r0 * pw;
box.r = r1 * pw;
box.b = (1 - r0) * ph;
box.t = (1 - r1) * ph;
corners.attr('d', xyCorners(box));
} else {
noZoom();
}
} else if(!yActive || dy < Math.min(Math.max(dx * 0.6, MINDRAG), MINZOOM)) {
// look for small drags in one direction or the other,
// and only drag the other axis
if(dx < MINDRAG || !xActive) {
noZoom();
} else {
box.t = 0;
box.b = ph;
zoomMode = 'x';
corners.attr('d', xCorners(box, y0));
}
} else if(!xActive || dx < Math.min(dy * 0.6, MINZOOM)) {
box.l = 0;
box.r = pw;
zoomMode = 'y';
corners.attr('d', yCorners(box, x0));
} else {
zoomMode = 'xy';
corners.attr('d', xyCorners(box));
}
box.w = box.r - box.l;
box.h = box.b - box.t;
if(zoomMode) zoomDragged = true;
gd._dragged = zoomDragged;
updateZoombox(zb, corners, box, path0, dimmed, lum);
computeZoomUpdates();
gd.emit('plotly_relayouting', updates);
dimmed = true;
}
function computeZoomUpdates() {
updates = {};
// TODO: edit linked axes in zoomAxRanges and in dragTail
if(zoomMode === 'xy' || zoomMode === 'x') {
zoomAxRanges(xaxes, box.l / pw, box.r / pw, updates, links.xaxes);
updateMatchedAxRange('x', updates);
}
if(zoomMode === 'xy' || zoomMode === 'y') {
zoomAxRanges(yaxes, (ph - box.b) / ph, (ph - box.t) / ph, updates, links.yaxes);
updateMatchedAxRange('y', updates);
}
}
function zoomDone() {
computeZoomUpdates();
removeZoombox(gd);
dragTail();
showDoubleClickNotifier(gd);
}
// scroll zoom, on all draggers except corners
var scrollViewBox = [0, 0, pw, ph];
// wait a little after scrolling before redrawing
var redrawTimer = null;
var REDRAWDELAY = constants.REDRAWDELAY;
var mainplot = plotinfo.mainplot ? gd._fullLayout._plots[plotinfo.mainplot] : plotinfo;
function zoomWheel(e) {
// deactivate mousewheel scrolling on embedded graphs
// devs can override this with layout._enablescrollzoom,
// but _ ensures this setting won't leave their page
if(!gd._context._scrollZoom.cartesian && !gd._fullLayout._enablescrollzoom) {
return;
}
clearAndResetSelect();
// If a transition is in progress, then disable any behavior:
if(gd._transitioningWithDuration) {
e.preventDefault();
e.stopPropagation();
return;
}
recomputeAxisLists();
clearTimeout(redrawTimer);
var wheelDelta = -e.deltaY;
if(!isFinite(wheelDelta)) wheelDelta = e.wheelDelta / 10;
if(!isFinite(wheelDelta)) {
Lib.log('Did not find wheel motion attributes: ', e);
return;
}
var zoom = Math.exp(-Math.min(Math.max(wheelDelta, -20), 20) / 200);
var gbb = mainplot.draglayer.select('.nsewdrag').node().getBoundingClientRect();
var xfrac = (e.clientX - gbb.left) / gbb.width;
var yfrac = (gbb.bottom - e.clientY) / gbb.height;
var i;
function zoomWheelOneAxis(ax, centerFraction, zoom) {
if(ax.fixedrange) return;
var axRange = Lib.simpleMap(ax.range, ax.r2l);
var v0 = axRange[0] + (axRange[1] - axRange[0]) * centerFraction;
function doZoom(v) { return ax.l2r(v0 + (v - v0) * zoom); }
ax.range = axRange.map(doZoom);
}
if(editX) {
// if we're only zooming this axis because of constraints,
// zoom it about the center
if(!ew) xfrac = 0.5;
for(i = 0; i < xaxes.length; i++) {
zoomWheelOneAxis(xaxes[i], xfrac, zoom);
}
updateMatchedAxRange('x');
scrollViewBox[2] *= zoom;
scrollViewBox[0] += scrollViewBox[2] * xfrac * (1 / zoom - 1);
}
if(editY) {
if(!ns) yfrac = 0.5;
for(i = 0; i < yaxes.length; i++) {
zoomWheelOneAxis(yaxes[i], yfrac, zoom);
}
updateMatchedAxRange('y');
scrollViewBox[3] *= zoom;
scrollViewBox[1] += scrollViewBox[3] * (1 - yfrac) * (1 / zoom - 1);
}
// viewbox redraw at first
updateSubplots(scrollViewBox);
ticksAndAnnotations();
gd.emit('plotly_relayouting', updates);
// then replot after a delay to make sure
// no more scrolling is coming
redrawTimer = setTimeout(function() {
scrollViewBox = [0, 0, pw, ph];
dragTail();
}, REDRAWDELAY);
e.preventDefault();
return;
}
// everything but the corners gets wheel zoom
if(ns.length * ew.length !== 1) {
attachWheelEventHandler(dragger, zoomWheel);
}
// plotDrag: move the plot in response to a drag
function plotDrag(dx, dy) {
// If a transition is in progress, then disable any behavior:
if(gd._transitioningWithDuration) {
return;
}
// prevent axis drawing from monkeying with margins until we're done
gd._fullLayout._replotting = true;
if(xActive === 'ew' || yActive === 'ns') {
if(xActive) {
dragAxList(xaxes, dx);
updateMatchedAxRange('x');
}
if(yActive) {
dragAxList(yaxes, dy);
updateMatchedAxRange('y');
}
updateSubplots([xActive ? -dx : 0, yActive ? -dy : 0, pw, ph]);
ticksAndAnnotations();
gd.emit('plotly_relayouting', updates);
return;
}
// dz: set a new value for one end (0 or 1) of an axis array axArray,
// and return a pixel shift for that end for the viewbox
// based on pixel drag distance d
// TODO: this makes (generally non-fatal) errors when you get
// near floating point limits
function dz(axArray, end, d) {
var otherEnd = 1 - end;
var movedAx;
var newLinearizedEnd;
for(var i = 0; i < axArray.length; i++) {
var axi = axArray[i];
if(axi.fixedrange) continue;
movedAx = axi;
newLinearizedEnd = axi._rl[otherEnd] +
(axi._rl[end] - axi._rl[otherEnd]) / dZoom(d / axi._length);
var newEnd = axi.l2r(newLinearizedEnd);
// if l2r comes back false or undefined, it means we've dragged off
// the end of valid ranges - so stop.
if(newEnd !== false && newEnd !== undefined) axi.range[end] = newEnd;
}
return movedAx._length * (movedAx._rl[end] - newLinearizedEnd) /
(movedAx._rl[end] - movedAx._rl[otherEnd]);
}
if(links.isSubplotConstrained && xActive && yActive) {
// dragging a corner of a constrained subplot:
// respect the fixed corner, but harmonize dx and dy
var dxySign = ((xActive === 'w') === (yActive === 'n')) ? 1 : -1;
var dxyFraction = (dx / pw + dxySign * dy / ph) / 2;
dx = dxyFraction * pw;
dy = dxySign * dxyFraction * ph;
}
if(xActive === 'w') dx = dz(xaxes, 0, dx);
else if(xActive === 'e') dx = dz(xaxes, 1, -dx);
else if(!xActive) dx = 0;
if(yActive === 'n') dy = dz(yaxes, 1, dy);
else if(yActive === 's') dy = dz(yaxes, 0, -dy);
else if(!yActive) dy = 0;
var xStart = (xActive === 'w') ? dx : 0;
var yStart = (yActive === 'n') ? dy : 0;
if(links.isSubplotConstrained) {
var i;
if(!xActive && yActive.length === 1) {
// dragging one end of the y axis of a constrained subplot
// scale the other axis the same about its middle
for(i = 0; i < xaxes.length; i++) {
xaxes[i].range = xaxes[i]._r.slice();
scaleZoom(xaxes[i], 1 - dy / ph);
}
dx = dy * pw / ph;
xStart = dx / 2;
}
if(!yActive && xActive.length === 1) {
for(i = 0; i < yaxes.length; i++) {
yaxes[i].range = yaxes[i]._r.slice();
scaleZoom(yaxes[i], 1 - dx / pw);
}
dy = dx * ph / pw;
yStart = dy / 2;
}
}
updateMatchedAxRange('x');
updateMatchedAxRange('y');
updateSubplots([xStart, yStart, pw - dx, ph - dy]);
ticksAndAnnotations();
gd.emit('plotly_relayouting', updates);
}
function updateMatchedAxRange(axLetter, out) {
var matchedAxes = matches.isSubplotConstrained ?
{x: yaxes, y: xaxes}[axLetter] :
matches[axLetter + 'axes'];
var constrainedAxes = matches.isSubplotConstrained ?
{x: xaxes, y: yaxes}[axLetter] :
[];
for(var i = 0; i < matchedAxes.length; i++) {
var ax = matchedAxes[i];
var axId = ax._id;
var axId2 = matches.xLinks[axId] || matches.yLinks[axId];
var ax2 = constrainedAxes[0] || xaHash[axId2] || yaHash[axId2];
if(ax2) {
if(out) {
// zoombox case - don't mutate 'range', just add keys in 'updates'
out[ax._name + '.range[0]'] = out[ax2._name + '.range[0]'];
out[ax._name + '.range[1]'] = out[ax2._name + '.range[1]'];
} else {
ax.range = ax2.range.slice();
}
}
}
}
// Draw ticks and annotations (and other components) when ranges change.
// Also records the ranges that have changed for use by update at the end.
function ticksAndAnnotations() {
var activeAxIds = [];
var i;
function pushActiveAxIds(axList) {
for(i = 0; i < axList.length; i++) {
if(!axList[i].fixedrange) activeAxIds.push(axList[i]._id);
}
}
if(editX) {
pushActiveAxIds(xaxes);
pushActiveAxIds(links.xaxes);
pushActiveAxIds(matches.xaxes);
}
if(editY) {
pushActiveAxIds(yaxes);
pushActiveAxIds(links.yaxes);
pushActiveAxIds(matches.yaxes);
}
updates = {};
for(i = 0; i < activeAxIds.length; i++) {
var axId = activeAxIds[i];
var ax = getFromId(gd, axId);
Axes.drawOne(gd, ax, {skipTitle: true});
updates[ax._name + '.range[0]'] = ax.range[0];
updates[ax._name + '.range[1]'] = ax.range[1];
}
Axes.redrawComponents(gd, activeAxIds);
}
function doubleClick() {
if(gd._transitioningWithDuration) return;
var doubleClickConfig = gd._context.doubleClick;
var axList = [];
if(xActive) axList = axList.concat(xaxes);
if(yActive) axList = axList.concat(yaxes);
if(matches.xaxes) axList = axList.concat(matches.xaxes);
if(matches.yaxes) axList = axList.concat(matches.yaxes);
var attrs = {};
var ax, i, rangeInitial;
// For reset+autosize mode:
// If *any* of the main axes is not at its initial range
// (or autoranged, if we have no initial range, to match the logic in
// doubleClickConfig === 'reset' below), we reset.
// If they are *all* at their initial ranges, then we autosize.
if(doubleClickConfig === 'reset+autosize') {
doubleClickConfig = 'autosize';
for(i = 0; i < axList.length; i++) {
ax = axList[i];
if((ax._rangeInitial && (
ax.range[0] !== ax._rangeInitial[0] ||
ax.range[1] !== ax._rangeInitial[1]
)) ||
(!ax._rangeInitial && !ax.autorange)
) {
doubleClickConfig = 'reset';
break;
}
}
}
if(doubleClickConfig === 'autosize') {
// don't set the linked axes here, so relayout marks them as shrinkable
// and we autosize just to the requested axis/axes
for(i = 0; i < axList.length; i++) {
ax = axList[i];
if(!ax.fixedrange) attrs[ax._name + '.autorange'] = true;
}
} else if(doubleClickConfig === 'reset') {
// when we're resetting, reset all linked axes too, so we get back
// to the fully-auto-with-constraints situation
if(xActive || links.isSubplotConstrained) axList = axList.concat(links.xaxes);
if(yActive && !links.isSubplotConstrained) axList = axList.concat(links.yaxes);
if(links.isSubplotConstrained) {
if(!xActive) axList = axList.concat(xaxes);
else if(!yActive) axList = axList.concat(yaxes);
}
for(i = 0; i < axList.length; i++) {
ax = axList[i];
if(!ax.fixedrange) {
if(!ax._rangeInitial) {
attrs[ax._name + '.autorange'] = true;
} else {
rangeInitial = ax._rangeInitial;
attrs[ax._name + '.range[0]'] = rangeInitial[0];
attrs[ax._name + '.range[1]'] = rangeInitial[1];
}
}
}
}
gd.emit('plotly_doubleclick', null);
Registry.call('_guiRelayout', gd, attrs);
}
// dragTail - finish a drag event with a redraw
function dragTail() {
// put the subplot viewboxes back to default (Because we're going to)
// be repositioning the data in the relayout. But DON'T call
// ticksAndAnnotations again - it's unnecessary and would overwrite `updates`
updateSubplots([0, 0, pw, ph]);
// since we may have been redrawing some things during the drag, we may have
// accumulated MathJax promises - wait for them before we relayout.
Lib.syncOrAsync([
Plots.previousPromises,
function() {
gd._fullLayout._replotting = false;
Registry.call('_guiRelayout', gd, updates);
}
], gd);
}
// updateSubplots - find all plot viewboxes that should be
// affected by this drag, and update them. look for all plots
// sharing an affected axis (including the one being dragged),
// includes also scattergl and splom logic.
function updateSubplots(viewBox) {
var fullLayout = gd._fullLayout;
var plotinfos = fullLayout._plots;
var subplots = fullLayout._subplots.cartesian;
var i, sp, xa, ya;
if(hasSplom) {
Registry.subplotsRegistry.splom.drag(gd);
}
if(hasScatterGl) {
for(i = 0; i < subplots.length; i++) {
sp = plotinfos[subplots[i]];
xa = sp.xaxis;
ya = sp.yaxis;
if(sp._scene) {
var xrng = Lib.simpleMap(xa.range, xa.r2l);
var yrng = Lib.simpleMap(ya.range, ya.r2l);
sp._scene.update({range: [xrng[0], yrng[0], xrng[1], yrng[1]]});
}
}
}
if(hasSplom || hasScatterGl) {
clearGlCanvases(gd);
redrawReglTraces(gd);
}
if(hasSVG) {
var xScaleFactor = viewBox[2] / xa0._length;
var yScaleFactor = viewBox[3] / ya0._length;
for(i = 0; i < subplots.length; i++) {
sp = plotinfos[subplots[i]];
xa = sp.xaxis;
ya = sp.yaxis;
var editX2 = editX && !xa.fixedrange && xaHash[xa._id];
var editY2 = editY && !ya.fixedrange && yaHash[ya._id];
var xScaleFactor2, yScaleFactor2;
var clipDx, clipDy;
if(editX2) {
xScaleFactor2 = xScaleFactor;
clipDx = ew ? viewBox[0] : getShift(xa, xScaleFactor2);
} else if(matches.xaHash[xa._id]) {
xScaleFactor2 = xScaleFactor;
clipDx = viewBox[0] * xa._length / xa0._length;
} else if(matches.yaHash[xa._id]) {
xScaleFactor2 = yScaleFactor;
clipDx = yActive === 'ns' ?
-viewBox[1] * xa._length / ya0._length :
getShift(xa, xScaleFactor2, {n: 'top', s: 'bottom'}[yActive]);
} else {
xScaleFactor2 = getLinkedScaleFactor(xa, xScaleFactor, yScaleFactor);
clipDx = scaleAndGetShift(xa, xScaleFactor2);
}
if(editY2) {
yScaleFactor2 = yScaleFactor;
clipDy = ns ? viewBox[1] : getShift(ya, yScaleFactor2);
} else if(matches.yaHash[ya._id]) {
yScaleFactor2 = yScaleFactor;
clipDy = viewBox[1] * ya._length / ya0._length;
} else if(matches.xaHash[ya._id]) {
yScaleFactor2 = xScaleFactor;
clipDy = xActive === 'ew' ?
-viewBox[0] * ya._length / xa0._length :
getShift(ya, yScaleFactor2, {e: 'right', w: 'left'}[xActive]);
} else {
yScaleFactor2 = getLinkedScaleFactor(ya, xScaleFactor, yScaleFactor);
clipDy = scaleAndGetShift(ya, yScaleFactor2);
}
// don't scale at all if neither axis is scalable here
if(!xScaleFactor2 && !yScaleFactor2) {
continue;
}
// but if only one is, reset the other axis scaling
if(!xScaleFactor2) xScaleFactor2 = 1;
if(!yScaleFactor2) yScaleFactor2 = 1;
var plotDx = xa._offset - clipDx / xScaleFactor2;
var plotDy = ya._offset - clipDy / yScaleFactor2;
// TODO could be more efficient here:
// setTranslate and setScale do a lot of extra work
// when working independently, should perhaps combine
// them into a single routine.
sp.clipRect
.call(Drawing.setTranslate, clipDx, clipDy)
.call(Drawing.setScale, xScaleFactor2, yScaleFactor2);
sp.plot
.call(Drawing.setTranslate, plotDx, plotDy)
.call(Drawing.setScale, 1 / xScaleFactor2, 1 / yScaleFactor2);
// apply an inverse scale to individual points to counteract
// the scale of the trace group.
// apply only when scale changes, as adjusting the scale of
// all the points can be expansive.
if(xScaleFactor2 !== sp.xScaleFactor || yScaleFactor2 !== sp.yScaleFactor) {
Drawing.setPointGroupScale(sp.zoomScalePts, xScaleFactor2, yScaleFactor2);
Drawing.setTextPointsScale(sp.zoomScaleTxt, xScaleFactor2, yScaleFactor2);
}
Drawing.hideOutsideRangePoints(sp.clipOnAxisFalseTraces, sp);
// update x/y scaleFactor stash
sp.xScaleFactor = xScaleFactor2;
sp.yScaleFactor = yScaleFactor2;
}
}
}
// Find the appropriate scaling for this axis, if it's linked to the
// dragged axes by constraints. 0 is special, it means this axis shouldn't
// ever be scaled (will be converted to 1 if the other axis is scaled)
function getLinkedScaleFactor(ax, xScaleFactor, yScaleFactor) {
if(ax.fixedrange) return 0;
if(editX && links.xaHash[ax._id]) {
return xScaleFactor;
}
if(editY && (links.isSubplotConstrained ? links.xaHash : links.yaHash)[ax._id]) {
return yScaleFactor;
}
return 0;
}
function scaleAndGetShift(ax, scaleFactor) {
if(scaleFactor) {
ax.range = ax._r.slice();
scaleZoom(ax, scaleFactor);
return getShift(ax, scaleFactor);
}
return 0;
}
function getShift(ax, scaleFactor, from) {
return ax._length * (1 - scaleFactor) * FROM_TL[from || ax.constraintoward || 'middle'];
}
return dragger;
}
function makeDragger(plotinfo, nodeName, dragClass, cursor) {
var dragger3 = Lib.ensureSingle(plotinfo.draglayer, nodeName, dragClass, function(s) {
s.classed('drag', true)
.style({fill: 'transparent', 'stroke-width': 0})
.attr('data-subplot', plotinfo.id);
});
dragger3.call(setCursor, cursor);
return dragger3.node();
}
function makeRectDragger(plotinfo, dragClass, cursor, x, y, w, h) {
var dragger = makeDragger(plotinfo, 'rect', dragClass, cursor);
d3.select(dragger).call(Drawing.setRect, x, y, w, h);
return dragger;
}
function isDirectionActive(axList, activeVal) {
for(var i = 0; i < axList.length; i++) {
if(!axList[i].fixedrange) return activeVal;
}
return '';
}
function getEndText(ax, end) {
var initialVal = ax.range[end];
var diff = Math.abs(initialVal - ax.range[1 - end]);
var dig;
// TODO: this should basically be ax.r2d but we're doing extra
// rounding here... can we clean up at all?
if(ax.type === 'date') {
return initialVal;
} else if(ax.type === 'log') {
dig = Math.ceil(Math.max(0, -Math.log(diff) / Math.LN10)) + 3;
return d3.format('.' + dig + 'g')(Math.pow(10, initialVal));
} else { // linear numeric (or category... but just show numbers here)
dig = Math.floor(Math.log(Math.abs(initialVal)) / Math.LN10) -
Math.floor(Math.log(diff) / Math.LN10) + 4;
return d3.format('.' + String(dig) + 'g')(initialVal);
}
}
function zoomAxRanges(axList, r0Fraction, r1Fraction, updates, linkedAxes) {
for(var i = 0; i < axList.length; i++) {
var axi = axList[i];
if(axi.fixedrange) continue;
if(axi.breaks) {
if(axi._id.charAt(0) === 'y') {
updates[axi._name + '.range[0]'] = axi.l2r(axi.p2l((1 - r0Fraction) * axi._length));
updates[axi._name + '.range[1]'] = axi.l2r(axi.p2l((1 - r1Fraction) * axi._length));
} else {
updates[axi._name + '.range[0]'] = axi.l2r(axi.p2l(r0Fraction * axi._length));
updates[axi._name + '.range[1]'] = axi.l2r(axi.p2l(r1Fraction * axi._length));
}
} else {
var axRangeLinear0 = axi._rl[0];
var axRangeLinearSpan = axi._rl[1] - axRangeLinear0;
updates[axi._name + '.range[0]'] = axi.l2r(axRangeLinear0 + axRangeLinearSpan * r0Fraction);