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Side by Side Diff: third_party/WebKit/public/platform/WebInputEvent.h

Issue 2387113002: reflow comments in public/platform/ (Closed)
Patch Set: nit Created 4 years, 2 months ago
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1 /* 1 /*
2 * Copyright (C) 2009 Google Inc. All rights reserved. 2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are 5 * modification, are permitted provided that the following conditions are
6 * met: 6 * met:
7 * 7 *
8 * * Redistributions of source code must retain the above copyright 8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above 10 * * Redistributions in binary form must reproduce the above
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221 // expected to stick. If this axis is set to Free, then scrolling is not 221 // expected to stick. If this axis is set to Free, then scrolling is not
222 // stuck to any axis. 222 // stuck to any axis.
223 enum RailsMode { 223 enum RailsMode {
224 RailsModeFree = 0, 224 RailsModeFree = 0,
225 RailsModeHorizontal = 1, 225 RailsModeHorizontal = 1,
226 RailsModeVertical = 2, 226 RailsModeVertical = 2,
227 }; 227 };
228 228
229 static const int InputModifiers = ShiftKey | ControlKey | AltKey | MetaKey; 229 static const int InputModifiers = ShiftKey | ControlKey | AltKey | MetaKey;
230 230
231 double 231 double timeStampSeconds; // Seconds since platform start with microsecond
232 timeStampSeconds; // Seconds since platform start with microsecond resolu tion. 232 // resolution.
233 unsigned size; // The size of this structure, for serialization. 233 unsigned size; // The size of this structure, for serialization.
234 Type type; 234 Type type;
235 int modifiers; 235 int modifiers;
236 236
237 // Returns true if the WebInputEvent |type| is a mouse event. 237 // Returns true if the WebInputEvent |type| is a mouse event.
238 static bool isMouseEventType(int type) { 238 static bool isMouseEventType(int type) {
239 return MouseTypeFirst <= type && type <= MouseTypeLast; 239 return MouseTypeFirst <= type && type <= MouseTypeLast;
240 } 240 }
241 241
242 // Returns true if the WebInputEvent |type| is a keyboard event. 242 // Returns true if the WebInputEvent |type| is a keyboard event.
243 static bool isKeyboardEventType(int type) { 243 static bool isKeyboardEventType(int type) {
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456 accelerationRatioY(1.0f), 456 accelerationRatioY(1.0f),
457 resendingPluginId(-1), 457 resendingPluginId(-1),
458 phase(PhaseNone), 458 phase(PhaseNone),
459 momentumPhase(PhaseNone), 459 momentumPhase(PhaseNone),
460 scrollByPage(false), 460 scrollByPage(false),
461 hasPreciseScrollingDeltas(false), 461 hasPreciseScrollingDeltas(false),
462 railsMode(RailsModeFree), 462 railsMode(RailsModeFree),
463 dispatchType(Blocking) {} 463 dispatchType(Blocking) {}
464 }; 464 };
465 465
466 // WebGestureEvent ------------------------------------------------------------- - 466 // WebGestureEvent ---------------------------------------------------------
467 467
468 class WebGestureEvent : public WebInputEvent { 468 class WebGestureEvent : public WebInputEvent {
469 public: 469 public:
470 enum ScrollUnits { 470 enum ScrollUnits {
471 PrecisePixels = 0, // generated by high precision devices. 471 PrecisePixels = 0, // generated by high precision devices.
472 Pixels, // large pixel jump duration; should animate to delta. 472 Pixels, // large pixel jump duration; should animate to delta.
473 Page // page (visible viewport) based scrolling. 473 Page // page (visible viewport) based scrolling.
474 }; 474 };
475 475
476 enum InertialPhaseState { 476 enum InertialPhaseState {
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532 struct { 532 struct {
533 // Initial motion that triggered the scroll. 533 // Initial motion that triggered the scroll.
534 // May be redundant with deltaX/deltaY in the first scrollUpdate. 534 // May be redundant with deltaX/deltaY in the first scrollUpdate.
535 float deltaXHint; 535 float deltaXHint;
536 float deltaYHint; 536 float deltaYHint;
537 // Default initialized to ScrollUnits::PrecisePixels. 537 // Default initialized to ScrollUnits::PrecisePixels.
538 ScrollUnits deltaHintUnits; 538 ScrollUnits deltaHintUnits;
539 // If true, this event will skip hit testing to find a scroll 539 // If true, this event will skip hit testing to find a scroll
540 // target and instead just scroll the viewport. 540 // target and instead just scroll the viewport.
541 bool targetViewport; 541 bool targetViewport;
542 // The state of inertial phase scrolling. OSX has unique phases for normal and 542 // The state of inertial phase scrolling. OSX has unique phases for normal
543 // momentum scroll events. Should always be UnknownMomentumPhase for touch based 543 // and momentum scroll events. Should always be UnknownMomentumPhase for
544 // input as it generates GestureFlingStart instead. 544 // touch based input as it generates GestureFlingStart instead.
545 InertialPhaseState inertialPhase; 545 InertialPhaseState inertialPhase;
546 // True if this event was synthesized in order to force a hit test; avoidi ng scroll 546 // True if this event was synthesized in order to force a hit test;
547 // latching behavior until crbug.com/526463 is fully implemented. 547 // avoiding scroll latching behavior until crbug.com/526463 is fully
548 // implemented.
548 bool synthetic; 549 bool synthetic;
549 550
550 // number of pointers down. 551 // number of pointers down.
551 int pointerCount; 552 int pointerCount;
552 } scrollBegin; 553 } scrollBegin;
553 554
554 struct { 555 struct {
555 float deltaX; 556 float deltaX;
556 float deltaY; 557 float deltaY;
557 float velocityX; 558 float velocityX;
558 float velocityY; 559 float velocityY;
559 // Whether any previous GestureScrollUpdate in the current scroll 560 // Whether any previous GestureScrollUpdate in the current scroll
560 // sequence was suppressed (e.g., the causal touchmove was 561 // sequence was suppressed (e.g., the causal touchmove was
561 // preventDefault'ed). This bit is particularly useful for 562 // preventDefault'ed). This bit is particularly useful for
562 // determining whether the observed scroll update sequence captures 563 // determining whether the observed scroll update sequence captures
563 // the entirety of the generative motion. 564 // the entirety of the generative motion.
564 bool previousUpdateInSequencePrevented; 565 bool previousUpdateInSequencePrevented;
565 bool preventPropagation; 566 bool preventPropagation;
566 InertialPhaseState inertialPhase; 567 InertialPhaseState inertialPhase;
567 // Default initialized to ScrollUnits::PrecisePixels. 568 // Default initialized to ScrollUnits::PrecisePixels.
568 ScrollUnits deltaUnits; 569 ScrollUnits deltaUnits;
569 } scrollUpdate; 570 } scrollUpdate;
570 571
571 struct { 572 struct {
572 // The original delta units the scrollBegin and scrollUpdates 573 // The original delta units the scrollBegin and scrollUpdates
573 // were sent as. 574 // were sent as.
574 ScrollUnits deltaUnits; 575 ScrollUnits deltaUnits;
575 // The state of inertial phase scrolling. OSX has unique phases for normal and 576 // The state of inertial phase scrolling. OSX has unique phases for normal
576 // momentum scroll events. Should always be UnknownMomentumPhase for touch based 577 // and momentum scroll events. Should always be UnknownMomentumPhase for
577 // input as it generates GestureFlingStart instead. 578 // touch based input as it generates GestureFlingStart instead.
578 InertialPhaseState inertialPhase; 579 InertialPhaseState inertialPhase;
579 // True if this event was synthesized in order to generate the proper 580 // True if this event was synthesized in order to generate the proper
580 // GSB/GSU/GSE matching sequences. This is a temporary so that a future 581 // GSB/GSU/GSE matching sequences. This is a temporary so that a future
581 // GSB will generate a hit test so latching behavior is avoided 582 // GSB will generate a hit test so latching behavior is avoided
582 // until crbug.com/526463 is fully implemented. 583 // until crbug.com/526463 is fully implemented.
583 bool synthetic; 584 bool synthetic;
584 } scrollEnd; 585 } scrollEnd;
585 586
586 struct { 587 struct {
587 float velocityX; 588 float velocityX;
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634 635
635 // For a single touch, this is true after the touch-point has moved beyond 636 // For a single touch, this is true after the touch-point has moved beyond
636 // the platform slop region. For a multitouch, this is true after any 637 // the platform slop region. For a multitouch, this is true after any
637 // touch-point has moved (by whatever amount). 638 // touch-point has moved (by whatever amount).
638 bool movedBeyondSlopRegion; 639 bool movedBeyondSlopRegion;
639 640
640 // Whether there was an active fling animation when the event was 641 // Whether there was an active fling animation when the event was
641 // dispatched. 642 // dispatched.
642 bool dispatchedDuringFling; 643 bool dispatchedDuringFling;
643 644
644 // Whether this touch event is a touchstart or a first touchmove event per scr oll. 645 // Whether this touch event is a touchstart or a first touchmove event per
646 // scroll.
645 bool touchStartOrFirstTouchMove; 647 bool touchStartOrFirstTouchMove;
646 648
647 // A unique identifier for the touch event. Valid ids start at one and 649 // A unique identifier for the touch event. Valid ids start at one and
648 // increase monotonically. Zero means an unknown id. 650 // increase monotonically. Zero means an unknown id.
649 uint32_t uniqueTouchEventId; 651 uint32_t uniqueTouchEventId;
650 652
651 WebTouchEvent() 653 WebTouchEvent()
652 : WebInputEvent(sizeof(WebTouchEvent)), 654 : WebInputEvent(sizeof(WebTouchEvent)),
653 touchesLength(0), 655 touchesLength(0),
654 dispatchType(Blocking), 656 dispatchType(Blocking),
655 movedBeyondSlopRegion(false), 657 movedBeyondSlopRegion(false),
656 dispatchedDuringFling(false), 658 dispatchedDuringFling(false),
657 touchStartOrFirstTouchMove(false), 659 touchStartOrFirstTouchMove(false),
658 uniqueTouchEventId(0) {} 660 uniqueTouchEventId(0) {}
659 }; 661 };
660 662
661 #pragma pack(pop) 663 #pragma pack(pop)
662 664
663 } // namespace blink 665 } // namespace blink
664 666
665 #endif 667 #endif
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