forked from mozilla-firefox/firefox
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathnsFrameSetFrame.cpp
1526 lines (1328 loc) · 53.5 KB
/
nsFrameSetFrame.cpp
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
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* rendering object for HTML <frameset> elements */
#include "nsFrameSetFrame.h"
#include "gfxContext.h"
#include "gfxUtils.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Helpers.h"
#include "mozilla/Likely.h"
#include "mozilla/PresShell.h"
#include "mozilla/PresShellInlines.h"
#include "nsGenericHTMLElement.h"
#include "nsAttrValueInlines.h"
#include "nsLeafFrame.h"
#include "nsContainerFrame.h"
#include "nsLayoutUtils.h"
#include "nsPresContext.h"
#include "nsIContentInlines.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsHTMLParts.h"
#include "nsNameSpaceManager.h"
#include "nsCSSAnonBoxes.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/ServoStyleSetInlines.h"
#include "mozilla/dom/Element.h"
#include "nsDisplayList.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/ChildIterator.h"
#include "mozilla/dom/HTMLFrameSetElement.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/MouseEvents.h"
#include "nsSubDocumentFrame.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
// masks for mEdgeVisibility
#define LEFT_VIS 0x0001
#define RIGHT_VIS 0x0002
#define TOP_VIS 0x0004
#define BOTTOM_VIS 0x0008
#define ALL_VIS 0x000F
#define NONE_VIS 0x0000
/*******************************************************************************
* nsFramesetDrag
******************************************************************************/
nsFramesetDrag::nsFramesetDrag() { UnSet(); }
void nsFramesetDrag::Reset(bool aVertical, int32_t aIndex, int32_t aChange,
nsHTMLFramesetFrame* aSource) {
mVertical = aVertical;
mIndex = aIndex;
mChange = aChange;
mSource = aSource;
}
void nsFramesetDrag::UnSet() {
mVertical = true;
mIndex = -1;
mChange = 0;
mSource = nullptr;
}
/*******************************************************************************
* nsHTMLFramesetBorderFrame
******************************************************************************/
class nsHTMLFramesetBorderFrame final : public nsLeafFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsHTMLFramesetBorderFrame)
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override;
#endif
virtual nsresult HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) override;
Cursor GetCursor(const nsPoint&) override;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
bool GetVisibility() { return mVisibility; }
void SetVisibility(bool aVisibility);
void SetColor(nscolor aColor);
void PaintBorder(DrawTarget* aDrawTarget, nsPoint aPt);
protected:
nsHTMLFramesetBorderFrame(ComputedStyle*, nsPresContext*, int32_t aWidth,
bool aVertical, bool aVisible);
virtual ~nsHTMLFramesetBorderFrame();
// the prev and next neighbors are indexes into the row (for a horizontal
// border) or col (for a vertical border) of nsHTMLFramesetFrames or
// nsHTMLFrames
int32_t mPrevNeighbor;
int32_t mNextNeighbor;
nscolor mColor;
int32_t mWidth;
bool mVertical;
bool mVisibility;
bool mCanResize;
friend class nsHTMLFramesetFrame;
};
/*******************************************************************************
* nsHTMLFramesetBlankFrame
******************************************************************************/
class nsHTMLFramesetBlankFrame final : public nsLeafFrame {
public:
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS(nsHTMLFramesetBlankFrame)
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override {
return MakeFrameName(u"FramesetBlank"_ns, aResult);
}
#endif
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
protected:
explicit nsHTMLFramesetBlankFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsLeafFrame(aStyle, aPresContext, kClassID) {}
virtual ~nsHTMLFramesetBlankFrame();
friend class nsHTMLFramesetFrame;
friend class nsHTMLFrameset;
};
/*******************************************************************************
* nsHTMLFramesetFrame
******************************************************************************/
bool nsHTMLFramesetFrame::gDragInProgress = false;
#define DEFAULT_BORDER_WIDTH_PX 6
nsHTMLFramesetFrame::nsHTMLFramesetFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsContainerFrame(aStyle, aPresContext, kClassID) {
mNumRows = 0;
mNumCols = 0;
mEdgeVisibility = 0;
mParentFrameborder = eFrameborder_Yes; // default
mParentBorderWidth = -1; // default not set
mParentBorderColor = NO_COLOR; // default not set
mFirstDragPoint.x = mFirstDragPoint.y = 0;
mMinDrag = nsPresContext::CSSPixelsToAppUnits(2);
mNonBorderChildCount = 0;
mNonBlankChildCount = 0;
mDragger = nullptr;
mChildCount = 0;
mTopLevelFrameset = nullptr;
mEdgeColors.Set(NO_COLOR);
}
nsHTMLFramesetFrame::~nsHTMLFramesetFrame() = default;
NS_QUERYFRAME_HEAD(nsHTMLFramesetFrame)
NS_QUERYFRAME_ENTRY(nsHTMLFramesetFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
void nsHTMLFramesetFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) {
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
// find the highest ancestor that is a frameset
nsIFrame* parentFrame = GetParent();
mTopLevelFrameset = this;
while (parentFrame) {
nsHTMLFramesetFrame* frameset = do_QueryFrame(parentFrame);
if (frameset) {
mTopLevelFrameset = frameset;
parentFrame = parentFrame->GetParent();
} else {
break;
}
}
nsPresContext* presContext = PresContext();
mozilla::PresShell* presShell = presContext->PresShell();
nsFrameborder frameborder = GetFrameBorder();
int32_t borderWidth = GetBorderWidth(presContext, false);
nscolor borderColor = GetBorderColor();
// Get the rows= cols= data
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
const nsFramesetSpec* colSpecs = nullptr;
// GetRowSpec and GetColSpec can fail, but when they do they set
// mNumRows and mNumCols respectively to 0, so we deal with it fine.
ourContent->GetRowSpec(&mNumRows, &rowSpecs);
ourContent->GetColSpec(&mNumCols, &colSpecs);
static_assert(
NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscoord),
"Maximum value of mNumRows and mNumCols is NS_MAX_FRAMESET_SPEC_COUNT");
mRowSizes = MakeUnique<nscoord[]>(mNumRows);
mColSizes = MakeUnique<nscoord[]>(mNumCols);
static_assert(
NS_MAX_FRAMESET_SPEC_COUNT < INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
int32_t numCells = mNumRows * mNumCols;
static_assert(NS_MAX_FRAMESET_SPEC_COUNT <
UINT_MAX / sizeof(nsHTMLFramesetBorderFrame*),
"Should not overflow nsHTMLFramesetBorderFrame");
mVerBorders = MakeUnique<nsHTMLFramesetBorderFrame*[]>(
mNumCols); // 1 more than number of ver borders
for (int verX = 0; verX < mNumCols; verX++) {
mVerBorders[verX] = nullptr;
}
mHorBorders = MakeUnique<nsHTMLFramesetBorderFrame*[]>(
mNumRows); // 1 more than number of hor borders
for (int horX = 0; horX < mNumRows; horX++) {
mHorBorders[horX] = nullptr;
}
static_assert(NS_MAX_FRAMESET_SPEC_COUNT <
UINT_MAX / sizeof(int32_t) / NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsFrameborder) /
NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsBorderColor) /
NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
mChildFrameborder = MakeUnique<nsFrameborder[]>(numCells);
mChildBorderColors = MakeUnique<nsBorderColor[]>(numCells);
// create the children frames; skip content which isn't <frameset> or <frame>
mChildCount = 0; // number of <frame> or <frameset> children
FlattenedChildIterator children(mContent);
for (nsIContent* child = children.GetNextChild(); child;
child = children.GetNextChild()) {
if (mChildCount == numCells) {
// we have more <frame> or <frameset> than cells
// Clear the lazy bits in the remaining children. Also clear
// the restyle flags, like nsCSSFrameConstructor::ProcessChildren does.
for (; child; child = child->GetNextSibling()) {
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
}
break;
}
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
// IMPORTANT: This must match the conditions in
// nsCSSFrameConstructor::ContentAppended/Inserted/Removed
if (!child->IsAnyOfHTMLElements(nsGkAtoms::frameset, nsGkAtoms::frame)) {
continue;
}
// FIXME(emilio): This doesn't even respect display: none, but that matches
// other browsers ;_;
//
// Maybe we should change that though.
RefPtr<ComputedStyle> kidStyle =
ServoStyleSet::ResolveServoStyle(*child->AsElement());
nsIFrame* frame;
if (child->IsHTMLElement(nsGkAtoms::frameset)) {
frame = NS_NewHTMLFramesetFrame(presShell, kidStyle);
nsHTMLFramesetFrame* childFrame = (nsHTMLFramesetFrame*)frame;
childFrame->SetParentFrameborder(frameborder);
childFrame->SetParentBorderWidth(borderWidth);
childFrame->SetParentBorderColor(borderColor);
frame->Init(child, this, nullptr);
mChildBorderColors[mChildCount].Set(childFrame->GetBorderColor());
} else { // frame
frame = NS_NewSubDocumentFrame(presShell, kidStyle);
frame->Init(child, this, nullptr);
mChildFrameborder[mChildCount] = GetFrameBorder(child);
mChildBorderColors[mChildCount].Set(GetBorderColor(child));
}
child->SetPrimaryFrame(frame);
mFrames.AppendFrame(nullptr, frame);
mChildCount++;
}
mNonBlankChildCount = mChildCount;
// add blank frames for frameset cells that had no content provided
for (int blankX = mChildCount; blankX < numCells; blankX++) {
RefPtr<ComputedStyle> pseudoComputedStyle =
presShell->StyleSet()->ResolveNonInheritingAnonymousBoxStyle(
PseudoStyleType::framesetBlank);
// XXX the blank frame is using the content of its parent - at some point it
// should just have null content, if we support that
nsHTMLFramesetBlankFrame* blankFrame = new (presShell)
nsHTMLFramesetBlankFrame(pseudoComputedStyle, PresContext());
blankFrame->Init(mContent, this, nullptr);
mFrames.AppendFrame(nullptr, blankFrame);
mChildBorderColors[mChildCount].Set(NO_COLOR);
mChildCount++;
}
mNonBorderChildCount = mChildCount;
}
void nsHTMLFramesetFrame::SetInitialChildList(ChildListID aListID,
nsFrameList&& aChildList) {
// We do this weirdness where we create our child frames in Init(). On the
// other hand, we're going to get a SetInitialChildList() with an empty list
// and null list name after the frame constructor is done creating us. So
// just ignore that call.
if (aListID == FrameChildListID::Principal && aChildList.IsEmpty()) {
return;
}
nsContainerFrame::SetInitialChildList(aListID, std::move(aChildList));
}
// XXX should this try to allocate twips based on an even pixel boundary?
void nsHTMLFramesetFrame::Scale(nscoord aDesired, int32_t aNumIndicies,
int32_t* aIndicies, int32_t aNumItems,
int32_t* aItems) {
int32_t actual = 0;
int32_t i, j;
// get the actual total
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
actual += aItems[j];
}
if (actual > 0) {
float factor = (float)aDesired / (float)actual;
actual = 0;
// scale the items up or down
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
aItems[j] = NSToCoordRound((float)aItems[j] * factor);
actual += aItems[j];
}
} else if (aNumIndicies != 0) {
// All the specs say zero width, but we have to fill up space
// somehow. Distribute it equally.
nscoord width = NSToCoordRound((float)aDesired / (float)aNumIndicies);
actual = width * aNumIndicies;
for (i = 0; i < aNumIndicies; i++) {
aItems[aIndicies[i]] = width;
}
}
if (aNumIndicies > 0 && aDesired != actual) {
int32_t unit = (aDesired > actual) ? 1 : -1;
for (i = 0; (i < aNumIndicies) && (aDesired != actual); i++) {
j = aIndicies[i];
if (j < aNumItems) {
aItems[j] += unit;
actual += unit;
}
}
}
}
/**
* Translate the rows/cols specs into an array of integer sizes for
* each cell in the frameset. Sizes are allocated based on the priorities of the
* specifier - fixed sizes have the highest priority, percentage sizes have the
* next highest priority and relative sizes have the lowest.
*/
void nsHTMLFramesetFrame::CalculateRowCol(nsPresContext* aPresContext,
nscoord aSize, int32_t aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues) {
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(int32_t),
"aNumSpecs maximum value is NS_MAX_FRAMESET_SPEC_COUNT");
int32_t fixedTotal = 0;
int32_t numFixed = 0;
auto fixed = MakeUnique<int32_t[]>(aNumSpecs);
int32_t numPercent = 0;
auto percent = MakeUnique<int32_t[]>(aNumSpecs);
int32_t relativeSums = 0;
int32_t numRelative = 0;
auto relative = MakeUnique<int32_t[]>(aNumSpecs);
if (MOZ_UNLIKELY(!fixed || !percent || !relative)) {
return; // NS_ERROR_OUT_OF_MEMORY
}
int32_t i, j;
// initialize the fixed, percent, relative indices, allocate the fixed sizes
// and zero the others
for (i = 0; i < aNumSpecs; i++) {
aValues[i] = 0;
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aValues[i] = nsPresContext::CSSPixelsToAppUnits(aSpecs[i].mValue);
fixedTotal += aValues[i];
fixed[numFixed] = i;
numFixed++;
break;
case eFramesetUnit_Percent:
percent[numPercent] = i;
numPercent++;
break;
case eFramesetUnit_Relative:
relative[numRelative] = i;
numRelative++;
relativeSums += aSpecs[i].mValue;
break;
}
}
// scale the fixed sizes if they total too much (or too little and there
// aren't any percent or relative)
if ((fixedTotal > aSize) ||
((fixedTotal < aSize) && (0 == numPercent) && (0 == numRelative))) {
Scale(aSize, numFixed, fixed.get(), aNumSpecs, aValues);
return;
}
int32_t percentMax = aSize - fixedTotal;
int32_t percentTotal = 0;
// allocate the percentage sizes from what is left over from the fixed
// allocation
for (i = 0; i < numPercent; i++) {
j = percent[i];
aValues[j] =
NSToCoordRound((float)aSpecs[j].mValue * (float)aSize / 100.0f);
percentTotal += aValues[j];
}
// scale the percent sizes if they total too much (or too little and there
// aren't any relative)
if ((percentTotal > percentMax) ||
((percentTotal < percentMax) && (0 == numRelative))) {
Scale(percentMax, numPercent, percent.get(), aNumSpecs, aValues);
return;
}
int32_t relativeMax = percentMax - percentTotal;
int32_t relativeTotal = 0;
// allocate the relative sizes from what is left over from the percent
// allocation
for (i = 0; i < numRelative; i++) {
j = relative[i];
aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)relativeMax /
(float)relativeSums);
relativeTotal += aValues[j];
}
// scale the relative sizes if they take up too much or too little
if (relativeTotal != relativeMax) {
Scale(relativeMax, numRelative, relative.get(), aNumSpecs, aValues);
}
}
/**
* Translate the rows/cols integer sizes into an array of specs for
* each cell in the frameset. Reverse of CalculateRowCol() behaviour.
* This allows us to maintain the user size info through reflows.
*/
void nsHTMLFramesetFrame::GenerateRowCol(nsPresContext* aPresContext,
nscoord aSize, int32_t aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues, nsString& aNewAttr) {
int32_t i;
for (i = 0; i < aNumSpecs; i++) {
if (!aNewAttr.IsEmpty()) {
aNewAttr.Append(char16_t(','));
}
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aNewAttr.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(aValues[i]));
break;
case eFramesetUnit_Percent: // XXX Only accurate to 1%, need 1 pixel
case eFramesetUnit_Relative:
// Add 0.5 to the percentage to make rounding work right.
aNewAttr.AppendInt(uint32_t((100.0 * aValues[i]) / aSize + 0.5));
aNewAttr.Append(char16_t('%'));
break;
}
}
}
int32_t nsHTMLFramesetFrame::GetBorderWidth(nsPresContext* aPresContext,
bool aTakeForcingIntoAccount) {
nsFrameborder frameborder = GetFrameBorder();
if (frameborder == eFrameborder_No) {
return 0;
}
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::border);
if (attr) {
int32_t intVal = 0;
if (attr->Type() == nsAttrValue::eInteger) {
intVal = attr->GetIntegerValue();
if (intVal < 0) {
intVal = 0;
}
}
return nsPresContext::CSSPixelsToAppUnits(intVal);
}
}
if (mParentBorderWidth >= 0) {
return mParentBorderWidth;
}
return nsPresContext::CSSPixelsToAppUnits(DEFAULT_BORDER_WIDTH_PX);
}
void nsHTMLFramesetFrame::GetDesiredSize(nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
ReflowOutput& aDesiredSize) {
WritingMode wm = aReflowInput.GetWritingMode();
LogicalSize desiredSize(wm);
nsHTMLFramesetFrame* framesetParent = do_QueryFrame(GetParent());
if (nullptr == framesetParent) {
if (aPresContext->IsPaginated()) {
// XXX This needs to be changed when framesets paginate properly
desiredSize.ISize(wm) = aReflowInput.AvailableISize();
desiredSize.BSize(wm) = aReflowInput.AvailableBSize();
} else {
LogicalSize area(wm, aPresContext->GetVisibleArea().Size());
desiredSize.ISize(wm) = area.ISize(wm);
desiredSize.BSize(wm) = area.BSize(wm);
}
} else {
LogicalSize size(wm);
framesetParent->GetSizeOfChild(this, wm, size);
desiredSize.ISize(wm) = size.ISize(wm);
desiredSize.BSize(wm) = size.BSize(wm);
}
aDesiredSize.SetSize(wm, desiredSize);
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChildAt(int32_t aIndexInParent,
WritingMode aWM, LogicalSize& aSize,
nsIntPoint& aCellIndex) {
int32_t row = aIndexInParent / mNumCols;
int32_t col = aIndexInParent -
(row * mNumCols); // remainder from dividing index by mNumCols
if ((row < mNumRows) && (col < mNumCols)) {
aSize.ISize(aWM) = mColSizes[col];
aSize.BSize(aWM) = mRowSizes[row];
aCellIndex.x = col;
aCellIndex.y = row;
} else {
aSize.SizeTo(aWM, 0, 0);
aCellIndex.x = aCellIndex.y = 0;
}
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChild(nsIFrame* aChild, WritingMode aWM,
LogicalSize& aSize) {
// Reflow only creates children frames for <frameset> and <frame> content.
// this assumption is used here
int i = 0;
for (nsIFrame* child : mFrames) {
if (aChild == child) {
nsIntPoint ignore;
GetSizeOfChildAt(i, aWM, aSize, ignore);
return;
}
i++;
}
aSize.SizeTo(aWM, 0, 0);
}
nsresult nsHTMLFramesetFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) {
NS_ENSURE_ARG_POINTER(aEventStatus);
if (mDragger) {
// the nsFramesetBorderFrame has captured NS_MOUSE_DOWN
switch (aEvent->mMessage) {
case eMouseMove:
MouseDrag(aPresContext, aEvent);
break;
case eMouseUp:
if (aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) {
EndMouseDrag(aPresContext);
}
break;
default:
break;
}
*aEventStatus = nsEventStatus_eConsumeNoDefault;
} else {
*aEventStatus = nsEventStatus_eIgnore;
}
return NS_OK;
}
nsIFrame::Cursor nsHTMLFramesetFrame::GetCursor(const nsPoint&) {
auto kind = StyleCursorKind::Default;
if (mDragger) {
kind = mDragger->mVertical ? StyleCursorKind::EwResize
: StyleCursorKind::NsResize;
}
return Cursor{kind, AllowCustomCursorImage::No};
}
void nsHTMLFramesetFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) {
BuildDisplayListForInline(aBuilder, aLists);
if (mDragger && aBuilder->IsForEventDelivery()) {
aLists.Content()->AppendNewToTop<nsDisplayEventReceiver>(aBuilder, this);
}
}
void nsHTMLFramesetFrame::ReflowPlaceChild(nsIFrame* aChild,
nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
nsPoint& aOffset, nsSize& aSize,
nsIntPoint* aCellIndex) {
// reflow the child
ReflowInput reflowInput(aPresContext, aReflowInput, aChild,
LogicalSize(aChild->GetWritingMode(), aSize));
reflowInput.SetComputedWidth(std::max(
0,
aSize.width - reflowInput.ComputedPhysicalBorderPadding().LeftRight()));
reflowInput.SetComputedHeight(std::max(
0,
aSize.height - reflowInput.ComputedPhysicalBorderPadding().TopBottom()));
ReflowOutput reflowOutput(aReflowInput);
reflowOutput.Width() = aSize.width;
reflowOutput.Height() = aSize.height;
nsReflowStatus status;
ReflowChild(aChild, aPresContext, reflowOutput, reflowInput, aOffset.x,
aOffset.y, ReflowChildFlags::Default, status);
NS_ASSERTION(status.IsComplete(), "bad status");
// Place and size the child
reflowOutput.Width() = aSize.width;
reflowOutput.Height() = aSize.height;
FinishReflowChild(aChild, aPresContext, reflowOutput, &reflowInput, aOffset.x,
aOffset.y, ReflowChildFlags::Default);
}
static nsFrameborder GetFrameBorderHelper(nsGenericHTMLElement* aContent) {
if (nullptr != aContent) {
const nsAttrValue* attr = aContent->GetParsedAttr(nsGkAtoms::frameborder);
if (attr && attr->Type() == nsAttrValue::eEnum) {
switch (static_cast<FrameBorderProperty>(attr->GetEnumValue())) {
case FrameBorderProperty::Yes:
case FrameBorderProperty::One:
return eFrameborder_Yes;
case FrameBorderProperty::No:
case FrameBorderProperty::Zero:
return eFrameborder_No;
}
}
}
return eFrameborder_Notset;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder() {
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return mParentFrameborder;
}
return result;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder(nsIContent* aContent) {
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(aContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return GetFrameBorder();
}
return result;
}
nscolor nsHTMLFramesetFrame::GetBorderColor() {
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return mParentBorderColor;
}
nscolor nsHTMLFramesetFrame::GetBorderColor(nsIContent* aContent) {
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(aContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return GetBorderColor();
}
void nsHTMLFramesetFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetFrame");
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
mozilla::PresShell* presShell = aPresContext->PresShell();
ServoStyleSet* styleSet = presShell->StyleSet();
GetParent()->AddStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE);
// printf("FramesetFrame2::Reflow %X (%d,%d) \n", this,
// aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight());
// Always get the size so that the caller knows how big we are
GetDesiredSize(aPresContext, aReflowInput, aDesiredSize);
nscoord width = (aDesiredSize.Width() <= aReflowInput.AvailableWidth())
? aDesiredSize.Width()
: aReflowInput.AvailableWidth();
nscoord height = (aDesiredSize.Height() <= aReflowInput.AvailableHeight())
? aDesiredSize.Height()
: aReflowInput.AvailableHeight();
// We might be reflowed more than once with NS_FRAME_FIRST_REFLOW;
// that's allowed. (Though it will only happen for misuse of frameset
// that includes it within other content.) So measure firstTime by
// what we care about, which is whether we've processed the data we
// process below if firstTime is true.
MOZ_ASSERT(!mChildFrameborder == !mChildBorderColors);
bool firstTime = !!mChildFrameborder;
// subtract out the width of all of the potential borders. There are
// only borders between <frame>s. There are none on the edges (e.g the
// leftmost <frame> has no left border).
int32_t borderWidth = GetBorderWidth(aPresContext, true);
width -= (mNumCols - 1) * borderWidth;
if (width < 0) {
width = 0;
}
height -= (mNumRows - 1) * borderWidth;
if (height < 0) {
height = 0;
}
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
const nsFramesetSpec* colSpecs = nullptr;
int32_t rows = 0;
int32_t cols = 0;
ourContent->GetRowSpec(&rows, &rowSpecs);
ourContent->GetColSpec(&cols, &colSpecs);
// If the number of cols or rows has changed, the frame for the frameset
// will be re-created.
if (mNumRows != rows || mNumCols != cols) {
mDrag.UnSet();
return;
}
CalculateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes.get());
CalculateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes.get());
UniquePtr<bool[]> verBordersVis; // vertical borders visibility
UniquePtr<nscolor[]> verBorderColors;
UniquePtr<bool[]> horBordersVis; // horizontal borders visibility
UniquePtr<nscolor[]> horBorderColors;
nscolor borderColor = GetBorderColor();
nsFrameborder frameborder = GetFrameBorder();
if (firstTime) {
// Check for overflow in memory allocations using mNumCols and mNumRows
// which have a maxium value of NS_MAX_FRAMESET_SPEC_COUNT.
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(bool),
"Check for overflow");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscolor),
"Check for overflow");
verBordersVis = MakeUnique<bool[]>(mNumCols);
verBorderColors = MakeUnique<nscolor[]>(mNumCols);
for (int verX = 0; verX < mNumCols; verX++) {
verBordersVis[verX] = false;
verBorderColors[verX] = NO_COLOR;
}
horBordersVis = MakeUnique<bool[]>(mNumRows);
horBorderColors = MakeUnique<nscolor[]>(mNumRows);
for (int horX = 0; horX < mNumRows; horX++) {
horBordersVis[horX] = false;
horBorderColors[horX] = NO_COLOR;
}
}
// reflow the children
int32_t lastRow = 0;
int32_t lastCol = 0;
int32_t borderChildX = mNonBorderChildCount; // index of border children
nsHTMLFramesetBorderFrame* borderFrame = nullptr;
nsPoint offset(0, 0);
nsSize size, lastSize;
WritingMode wm = GetWritingMode();
LogicalSize logicalSize(wm);
nsIFrame* child = mFrames.FirstChild();
for (int32_t childX = 0; childX < mNonBorderChildCount; childX++) {
nsIntPoint cellIndex;
GetSizeOfChildAt(childX, wm, logicalSize, cellIndex);
size = logicalSize.GetPhysicalSize(wm);
if (lastRow != cellIndex.y) { // changed to next row
offset.x = 0;
offset.y += lastSize.height;
if (firstTime) { // create horizontal border
RefPtr<ComputedStyle> pseudoComputedStyle;
pseudoComputedStyle = styleSet->ResolveNonInheritingAnonymousBoxStyle(
PseudoStyleType::horizontalFramesetBorder);
borderFrame = new (presShell) nsHTMLFramesetBorderFrame(
pseudoComputedStyle, PresContext(), borderWidth, false, false);
borderFrame->Init(mContent, this, nullptr);
mChildCount++;
mFrames.AppendFrame(nullptr, borderFrame);
mHorBorders[cellIndex.y - 1] = borderFrame;
// set the neighbors for determining drag boundaries
borderFrame->mPrevNeighbor = lastRow;
borderFrame->mNextNeighbor = cellIndex.y;
} else {
borderFrame = (nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX);
borderFrame->mWidth = borderWidth;
borderChildX++;
}
nsSize borderSize(aDesiredSize.Width(), borderWidth);
ReflowPlaceChild(borderFrame, aPresContext, aReflowInput, offset,
borderSize);
borderFrame = nullptr;
offset.y += borderWidth;
} else {
if (cellIndex.x > 0) { // moved to next col in same row
if (0 == cellIndex.y) { // in 1st row
if (firstTime) { // create vertical border
RefPtr<ComputedStyle> pseudoComputedStyle;
pseudoComputedStyle =
styleSet->ResolveNonInheritingAnonymousBoxStyle(
PseudoStyleType::verticalFramesetBorder);
borderFrame = new (presShell) nsHTMLFramesetBorderFrame(
pseudoComputedStyle, PresContext(), borderWidth, true, false);
borderFrame->Init(mContent, this, nullptr);
mChildCount++;
mFrames.AppendFrame(nullptr, borderFrame);
mVerBorders[cellIndex.x - 1] = borderFrame;
// set the neighbors for determining drag boundaries
borderFrame->mPrevNeighbor = lastCol;
borderFrame->mNextNeighbor = cellIndex.x;
} else {
borderFrame =
(nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX);
borderFrame->mWidth = borderWidth;
borderChildX++;
}
nsSize borderSize(borderWidth, aDesiredSize.Height());
ReflowPlaceChild(borderFrame, aPresContext, aReflowInput, offset,
borderSize);
borderFrame = nullptr;
}
offset.x += borderWidth;
}
}
ReflowPlaceChild(child, aPresContext, aReflowInput, offset, size,
&cellIndex);
if (firstTime) {
int32_t childVis;
nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(child);
if (framesetFrame) {
childVis = framesetFrame->mEdgeVisibility;
mChildBorderColors[childX] = framesetFrame->mEdgeColors;
} else if (child->IsSubDocumentFrame()) {
if (eFrameborder_Yes == mChildFrameborder[childX]) {
childVis = ALL_VIS;
} else if (eFrameborder_No == mChildFrameborder[childX]) {
childVis = NONE_VIS;
} else { // notset
childVis = (eFrameborder_No == frameborder) ? NONE_VIS : ALL_VIS;
}
} else { // blank
#ifdef DEBUG
nsHTMLFramesetBlankFrame* blank = do_QueryFrame(child);
MOZ_ASSERT(blank, "unexpected child frame type");
#endif
childVis = NONE_VIS;
}
nsBorderColor childColors = mChildBorderColors[childX];
// set the visibility, color of our edge borders based on children
if (0 == cellIndex.x) {
if (!(mEdgeVisibility & LEFT_VIS)) {
mEdgeVisibility |= (LEFT_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mLeft) {
mEdgeColors.mLeft = childColors.mLeft;
}
}
if (0 == cellIndex.y) {
if (!(mEdgeVisibility & TOP_VIS)) {
mEdgeVisibility |= (TOP_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mTop) {
mEdgeColors.mTop = childColors.mTop;
}
}
if (mNumCols - 1 == cellIndex.x) {
if (!(mEdgeVisibility & RIGHT_VIS)) {
mEdgeVisibility |= (RIGHT_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mRight) {
mEdgeColors.mRight = childColors.mRight;
}
}
if (mNumRows - 1 == cellIndex.y) {
if (!(mEdgeVisibility & BOTTOM_VIS)) {
mEdgeVisibility |= (BOTTOM_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mBottom) {
mEdgeColors.mBottom = childColors.mBottom;
}
}
// set the visibility of borders that the child may affect
if (childVis & RIGHT_VIS) {
verBordersVis[cellIndex.x] = true;
}
if (childVis & BOTTOM_VIS) {
horBordersVis[cellIndex.y] = true;
}
if ((cellIndex.x > 0) && (childVis & LEFT_VIS)) {
verBordersVis[cellIndex.x - 1] = true;
}