| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright (C) 2010, 2011 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' | |
| 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS | |
| 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
| 23 * THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 | |
| 28 #include "core/platform/mac/ScrollAnimatorMac.h" | |
| 29 | |
| 30 #include "core/platform/ScrollView.h" | |
| 31 #include "core/platform/ScrollableArea.h" | |
| 32 #include "core/platform/ScrollbarTheme.h" | |
| 33 #include "core/platform/ScrollbarThemeMacCommon.h" | |
| 34 #include "core/platform/ScrollbarThemeMacOverlayAPI.h" | |
| 35 #include "core/platform/mac/EmptyProtocolDefinitions.h" | |
| 36 #include "core/platform/mac/NSScrollerImpDetails.h" | |
| 37 #include "platform/PlatformGestureEvent.h" | |
| 38 #include "platform/PlatformWheelEvent.h" | |
| 39 #include "platform/geometry/FloatPoint.h" | |
| 40 #include "platform/mac/BlockExceptions.h" | |
| 41 #include "wtf/MainThread.h" | |
| 42 #include "wtf/PassOwnPtr.h" | |
| 43 #include "wtf/UnusedParam.h" | |
| 44 | |
| 45 using namespace WebCore; | |
| 46 using namespace std; | |
| 47 | |
| 48 static bool supportsUIStateTransitionProgress() | |
| 49 { | |
| 50 // FIXME: This is temporary until all platforms that support ScrollbarPainte
r support this part of the API. | |
| 51 static bool globalSupportsUIStateTransitionProgress = [NSClassFromString(@"N
SScrollerImp") instancesRespondToSelector:@selector(mouseEnteredScroller)]; | |
| 52 return globalSupportsUIStateTransitionProgress; | |
| 53 } | |
| 54 | |
| 55 static bool supportsExpansionTransitionProgress() | |
| 56 { | |
| 57 static bool globalSupportsExpansionTransitionProgress = [NSClassFromString(@
"NSScrollerImp") instancesRespondToSelector:@selector(expansionTransitionProgres
s)]; | |
| 58 return globalSupportsExpansionTransitionProgress; | |
| 59 } | |
| 60 | |
| 61 static bool supportsContentAreaScrolledInDirection() | |
| 62 { | |
| 63 static bool globalSupportsContentAreaScrolledInDirection = [NSClassFromStrin
g(@"NSScrollerImpPair") instancesRespondToSelector:@selector(contentAreaScrolled
InDirection:)]; | |
| 64 return globalSupportsContentAreaScrolledInDirection; | |
| 65 } | |
| 66 | |
| 67 static ScrollbarThemeMacOverlayAPI* macOverlayScrollbarTheme() | |
| 68 { | |
| 69 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(isScrollbarOverlayAPIAvailable()); | |
| 70 ScrollbarTheme* scrollbarTheme = ScrollbarTheme::theme(); | |
| 71 return !scrollbarTheme->isMockTheme() ? static_cast<ScrollbarThemeMacOverlay
API*>(scrollbarTheme) : 0; | |
| 72 } | |
| 73 | |
| 74 static ScrollbarPainter scrollbarPainterForScrollbar(Scrollbar* scrollbar) | |
| 75 { | |
| 76 if (ScrollbarThemeMacOverlayAPI* scrollbarTheme = macOverlayScrollbarTheme()
) | |
| 77 return scrollbarTheme->painterForScrollbar(scrollbar); | |
| 78 | |
| 79 return nil; | |
| 80 } | |
| 81 | |
| 82 @interface NSObject (ScrollAnimationHelperDetails) | |
| 83 - (id)initWithDelegate:(id)delegate; | |
| 84 - (void)_stopRun; | |
| 85 - (BOOL)_isAnimating; | |
| 86 - (NSPoint)targetOrigin; | |
| 87 - (CGFloat)_progress; | |
| 88 @end | |
| 89 | |
| 90 @interface WebScrollAnimationHelperDelegate : NSObject | |
| 91 { | |
| 92 WebCore::ScrollAnimatorMac* _animator; | |
| 93 } | |
| 94 - (id)initWithScrollAnimator:(WebCore::ScrollAnimatorMac*)scrollAnimator; | |
| 95 @end | |
| 96 | |
| 97 static NSSize abs(NSSize size) | |
| 98 { | |
| 99 NSSize finalSize = size; | |
| 100 if (finalSize.width < 0) | |
| 101 finalSize.width = -finalSize.width; | |
| 102 if (finalSize.height < 0) | |
| 103 finalSize.height = -finalSize.height; | |
| 104 return finalSize; | |
| 105 } | |
| 106 | |
| 107 @implementation WebScrollAnimationHelperDelegate | |
| 108 | |
| 109 - (id)initWithScrollAnimator:(WebCore::ScrollAnimatorMac*)scrollAnimator | |
| 110 { | |
| 111 self = [super init]; | |
| 112 if (!self) | |
| 113 return nil; | |
| 114 | |
| 115 _animator = scrollAnimator; | |
| 116 return self; | |
| 117 } | |
| 118 | |
| 119 - (void)invalidate | |
| 120 { | |
| 121 _animator = 0; | |
| 122 } | |
| 123 | |
| 124 - (NSRect)bounds | |
| 125 { | |
| 126 if (!_animator) | |
| 127 return NSZeroRect; | |
| 128 | |
| 129 WebCore::FloatPoint currentPosition = _animator->currentPosition(); | |
| 130 return NSMakeRect(currentPosition.x(), currentPosition.y(), 0, 0); | |
| 131 } | |
| 132 | |
| 133 - (void)_immediateScrollToPoint:(NSPoint)newPosition | |
| 134 { | |
| 135 if (!_animator) | |
| 136 return; | |
| 137 _animator->immediateScrollToPointForScrollAnimation(newPosition); | |
| 138 } | |
| 139 | |
| 140 - (NSPoint)_pixelAlignProposedScrollPosition:(NSPoint)newOrigin | |
| 141 { | |
| 142 return newOrigin; | |
| 143 } | |
| 144 | |
| 145 - (NSSize)convertSizeToBase:(NSSize)size | |
| 146 { | |
| 147 return abs(size); | |
| 148 } | |
| 149 | |
| 150 - (NSSize)convertSizeFromBase:(NSSize)size | |
| 151 { | |
| 152 return abs(size); | |
| 153 } | |
| 154 | |
| 155 - (NSSize)convertSizeToBacking:(NSSize)size | |
| 156 { | |
| 157 return abs(size); | |
| 158 } | |
| 159 | |
| 160 - (NSSize)convertSizeFromBacking:(NSSize)size | |
| 161 { | |
| 162 return abs(size); | |
| 163 } | |
| 164 | |
| 165 - (id)superview | |
| 166 { | |
| 167 return nil; | |
| 168 } | |
| 169 | |
| 170 - (id)documentView | |
| 171 { | |
| 172 return nil; | |
| 173 } | |
| 174 | |
| 175 - (id)window | |
| 176 { | |
| 177 return nil; | |
| 178 } | |
| 179 | |
| 180 - (void)_recursiveRecomputeToolTips | |
| 181 { | |
| 182 } | |
| 183 | |
| 184 @end | |
| 185 | |
| 186 @interface WebScrollbarPainterControllerDelegate : NSObject | |
| 187 { | |
| 188 ScrollableArea* _scrollableArea; | |
| 189 } | |
| 190 - (id)initWithScrollableArea:(ScrollableArea*)scrollableArea; | |
| 191 @end | |
| 192 | |
| 193 @implementation WebScrollbarPainterControllerDelegate | |
| 194 | |
| 195 - (id)initWithScrollableArea:(ScrollableArea*)scrollableArea | |
| 196 { | |
| 197 self = [super init]; | |
| 198 if (!self) | |
| 199 return nil; | |
| 200 | |
| 201 _scrollableArea = scrollableArea; | |
| 202 return self; | |
| 203 } | |
| 204 | |
| 205 - (void)invalidate | |
| 206 { | |
| 207 _scrollableArea = 0; | |
| 208 } | |
| 209 | |
| 210 - (NSRect)contentAreaRectForScrollerImpPair:(id)scrollerImpPair | |
| 211 { | |
| 212 UNUSED_PARAM(scrollerImpPair); | |
| 213 if (!_scrollableArea) | |
| 214 return NSZeroRect; | |
| 215 | |
| 216 WebCore::IntSize contentsSize = _scrollableArea->contentsSize(); | |
| 217 return NSMakeRect(0, 0, contentsSize.width(), contentsSize.height()); | |
| 218 } | |
| 219 | |
| 220 - (BOOL)inLiveResizeForScrollerImpPair:(id)scrollerImpPair | |
| 221 { | |
| 222 UNUSED_PARAM(scrollerImpPair); | |
| 223 if (!_scrollableArea) | |
| 224 return NO; | |
| 225 | |
| 226 return _scrollableArea->inLiveResize(); | |
| 227 } | |
| 228 | |
| 229 - (NSPoint)mouseLocationInContentAreaForScrollerImpPair:(id)scrollerImpPair | |
| 230 { | |
| 231 UNUSED_PARAM(scrollerImpPair); | |
| 232 if (!_scrollableArea) | |
| 233 return NSZeroPoint; | |
| 234 | |
| 235 return _scrollableArea->lastKnownMousePosition(); | |
| 236 } | |
| 237 | |
| 238 - (NSPoint)scrollerImpPair:(id)scrollerImpPair convertContentPoint:(NSPoint)poin
tInContentArea toScrollerImp:(id)scrollerImp | |
| 239 { | |
| 240 UNUSED_PARAM(scrollerImpPair); | |
| 241 | |
| 242 if (!_scrollableArea || !scrollerImp) | |
| 243 return NSZeroPoint; | |
| 244 | |
| 245 WebCore::Scrollbar* scrollbar = 0; | |
| 246 if ([scrollerImp isHorizontal]) | |
| 247 scrollbar = _scrollableArea->horizontalScrollbar(); | |
| 248 else | |
| 249 scrollbar = _scrollableArea->verticalScrollbar(); | |
| 250 | |
| 251 // It is possible to have a null scrollbar here since it is possible for thi
s delegate | |
| 252 // method to be called between the moment when a scrollbar has been set to 0
and the | |
| 253 // moment when its destructor has been called. We should probably de-couple
some | |
| 254 // of the clean-up work in ScrollbarThemeMac::unregisterScrollbar() to avoid
this | |
| 255 // issue. | |
| 256 if (!scrollbar) | |
| 257 return NSZeroPoint; | |
| 258 | |
| 259 ASSERT(scrollerImp == scrollbarPainterForScrollbar(scrollbar)); | |
| 260 | |
| 261 return scrollbar->convertFromContainingView(WebCore::IntPoint(pointInContent
Area)); | |
| 262 } | |
| 263 | |
| 264 - (void)scrollerImpPair:(id)scrollerImpPair setContentAreaNeedsDisplayInRect:(NS
Rect)rect | |
| 265 { | |
| 266 UNUSED_PARAM(scrollerImpPair); | |
| 267 UNUSED_PARAM(rect); | |
| 268 | |
| 269 if (!_scrollableArea) | |
| 270 return; | |
| 271 | |
| 272 if (!_scrollableArea->scrollbarsCanBeActive()) | |
| 273 return; | |
| 274 | |
| 275 _scrollableArea->scrollAnimator()->contentAreaWillPaint(); | |
| 276 } | |
| 277 | |
| 278 - (void)scrollerImpPair:(id)scrollerImpPair updateScrollerStyleForNewRecommended
ScrollerStyle:(NSScrollerStyle)newRecommendedScrollerStyle | |
| 279 { | |
| 280 // Chrome has a single process mode which is used for testing on Mac. In tha
t mode, WebKit runs on a thread in the | |
| 281 // browser process. This notification is called by the OS on the main thread
in the browser process, and not on the | |
| 282 // the WebKit thread. Better to not update the style than crash. | |
| 283 // http://crbug.com/126514 | |
| 284 if (!isMainThread()) | |
| 285 return; | |
| 286 | |
| 287 if (!_scrollableArea) | |
| 288 return; | |
| 289 | |
| 290 [scrollerImpPair setScrollerStyle:newRecommendedScrollerStyle]; | |
| 291 | |
| 292 static_cast<ScrollAnimatorMac*>(_scrollableArea->scrollAnimator())->updateSc
rollerStyle(); | |
| 293 } | |
| 294 | |
| 295 @end | |
| 296 | |
| 297 enum FeatureToAnimate { | |
| 298 ThumbAlpha, | |
| 299 TrackAlpha, | |
| 300 UIStateTransition, | |
| 301 ExpansionTransition | |
| 302 }; | |
| 303 | |
| 304 @interface WebScrollbarPartAnimation : NSAnimation | |
| 305 { | |
| 306 Scrollbar* _scrollbar; | |
| 307 RetainPtr<ScrollbarPainter> _scrollbarPainter; | |
| 308 FeatureToAnimate _featureToAnimate; | |
| 309 CGFloat _startValue; | |
| 310 CGFloat _endValue; | |
| 311 } | |
| 312 - (id)initWithScrollbar:(Scrollbar*)scrollbar featureToAnimate:(FeatureToAnimate
)featureToAnimate animateFrom:(CGFloat)startValue animateTo:(CGFloat)endValue du
ration:(NSTimeInterval)duration; | |
| 313 @end | |
| 314 | |
| 315 @implementation WebScrollbarPartAnimation | |
| 316 | |
| 317 - (id)initWithScrollbar:(Scrollbar*)scrollbar featureToAnimate:(FeatureToAnimate
)featureToAnimate animateFrom:(CGFloat)startValue animateTo:(CGFloat)endValue du
ration:(NSTimeInterval)duration | |
| 318 { | |
| 319 self = [super initWithDuration:duration animationCurve:NSAnimationEaseInOut]
; | |
| 320 if (!self) | |
| 321 return nil; | |
| 322 | |
| 323 _scrollbar = scrollbar; | |
| 324 _featureToAnimate = featureToAnimate; | |
| 325 _startValue = startValue; | |
| 326 _endValue = endValue; | |
| 327 | |
| 328 [self setAnimationBlockingMode:NSAnimationNonblocking]; | |
| 329 | |
| 330 return self; | |
| 331 } | |
| 332 | |
| 333 - (void)startAnimation | |
| 334 { | |
| 335 ASSERT(_scrollbar); | |
| 336 | |
| 337 _scrollbarPainter = scrollbarPainterForScrollbar(_scrollbar); | |
| 338 | |
| 339 [super startAnimation]; | |
| 340 } | |
| 341 | |
| 342 - (void)setStartValue:(CGFloat)startValue | |
| 343 { | |
| 344 _startValue = startValue; | |
| 345 } | |
| 346 | |
| 347 - (void)setEndValue:(CGFloat)endValue | |
| 348 { | |
| 349 _endValue = endValue; | |
| 350 } | |
| 351 | |
| 352 - (void)setCurrentProgress:(NSAnimationProgress)progress | |
| 353 { | |
| 354 [super setCurrentProgress:progress]; | |
| 355 | |
| 356 ASSERT(_scrollbar); | |
| 357 | |
| 358 CGFloat currentValue; | |
| 359 if (_startValue > _endValue) | |
| 360 currentValue = 1 - progress; | |
| 361 else | |
| 362 currentValue = progress; | |
| 363 | |
| 364 switch (_featureToAnimate) { | |
| 365 case ThumbAlpha: | |
| 366 [_scrollbarPainter.get() setKnobAlpha:currentValue]; | |
| 367 break; | |
| 368 case TrackAlpha: | |
| 369 [_scrollbarPainter.get() setTrackAlpha:currentValue]; | |
| 370 break; | |
| 371 case UIStateTransition: | |
| 372 [_scrollbarPainter.get() setUiStateTransitionProgress:currentValue]; | |
| 373 break; | |
| 374 case ExpansionTransition: | |
| 375 [_scrollbarPainter.get() setExpansionTransitionProgress:currentValue]; | |
| 376 break; | |
| 377 } | |
| 378 | |
| 379 _scrollbar->invalidate(); | |
| 380 } | |
| 381 | |
| 382 - (void)invalidate | |
| 383 { | |
| 384 BEGIN_BLOCK_OBJC_EXCEPTIONS; | |
| 385 [self stopAnimation]; | |
| 386 END_BLOCK_OBJC_EXCEPTIONS; | |
| 387 _scrollbar = 0; | |
| 388 } | |
| 389 | |
| 390 @end | |
| 391 | |
| 392 @interface WebScrollbarPainterDelegate : NSObject<NSAnimationDelegate> | |
| 393 { | |
| 394 WebCore::Scrollbar* _scrollbar; | |
| 395 | |
| 396 RetainPtr<WebScrollbarPartAnimation> _knobAlphaAnimation; | |
| 397 RetainPtr<WebScrollbarPartAnimation> _trackAlphaAnimation; | |
| 398 RetainPtr<WebScrollbarPartAnimation> _uiStateTransitionAnimation; | |
| 399 RetainPtr<WebScrollbarPartAnimation> _expansionTransitionAnimation; | |
| 400 } | |
| 401 - (id)initWithScrollbar:(WebCore::Scrollbar*)scrollbar; | |
| 402 - (void)cancelAnimations; | |
| 403 @end | |
| 404 | |
| 405 @implementation WebScrollbarPainterDelegate | |
| 406 | |
| 407 - (id)initWithScrollbar:(WebCore::Scrollbar*)scrollbar | |
| 408 { | |
| 409 self = [super init]; | |
| 410 if (!self) | |
| 411 return nil; | |
| 412 | |
| 413 _scrollbar = scrollbar; | |
| 414 return self; | |
| 415 } | |
| 416 | |
| 417 - (void)cancelAnimations | |
| 418 { | |
| 419 BEGIN_BLOCK_OBJC_EXCEPTIONS; | |
| 420 [_knobAlphaAnimation.get() stopAnimation]; | |
| 421 [_trackAlphaAnimation.get() stopAnimation]; | |
| 422 [_uiStateTransitionAnimation.get() stopAnimation]; | |
| 423 [_expansionTransitionAnimation.get() stopAnimation]; | |
| 424 END_BLOCK_OBJC_EXCEPTIONS; | |
| 425 } | |
| 426 | |
| 427 - (ScrollAnimatorMac*)scrollAnimator | |
| 428 { | |
| 429 return static_cast<ScrollAnimatorMac*>(_scrollbar->scrollableArea()->scrollA
nimator()); | |
| 430 } | |
| 431 | |
| 432 - (NSRect)convertRectToBacking:(NSRect)aRect | |
| 433 { | |
| 434 return aRect; | |
| 435 } | |
| 436 | |
| 437 - (NSRect)convertRectFromBacking:(NSRect)aRect | |
| 438 { | |
| 439 return aRect; | |
| 440 } | |
| 441 | |
| 442 - (NSPoint)mouseLocationInScrollerForScrollerImp:(id)scrollerImp | |
| 443 { | |
| 444 if (!_scrollbar) | |
| 445 return NSZeroPoint; | |
| 446 | |
| 447 ASSERT_UNUSED(scrollerImp, scrollerImp == scrollbarPainterForScrollbar(_scro
llbar)); | |
| 448 | |
| 449 return _scrollbar->convertFromContainingView(_scrollbar->scrollableArea()->l
astKnownMousePosition()); | |
| 450 } | |
| 451 | |
| 452 - (void)setUpAlphaAnimation:(RetainPtr<WebScrollbarPartAnimation>&)scrollbarPart
Animation scrollerPainter:(ScrollbarPainter)scrollerPainter part:(WebCore::Scrol
lbarPart)part animateAlphaTo:(CGFloat)newAlpha duration:(NSTimeInterval)duration | |
| 453 { | |
| 454 // If the user has scrolled the page, then the scrollbars must be animated h
ere. | |
| 455 // This overrides the early returns. | |
| 456 bool mustAnimate = [self scrollAnimator]->haveScrolledSincePageLoad(); | |
| 457 | |
| 458 if ([self scrollAnimator]->scrollbarPaintTimerIsActive() && !mustAnimate) | |
| 459 return; | |
| 460 | |
| 461 if (_scrollbar->scrollableArea()->shouldSuspendScrollAnimations() && !mustAn
imate) { | |
| 462 [self scrollAnimator]->startScrollbarPaintTimer(); | |
| 463 return; | |
| 464 } | |
| 465 | |
| 466 // At this point, we are definitely going to animate now, so stop the timer. | |
| 467 [self scrollAnimator]->stopScrollbarPaintTimer(); | |
| 468 | |
| 469 // If we are currently animating, stop | |
| 470 if (scrollbarPartAnimation) { | |
| 471 [scrollbarPartAnimation.get() stopAnimation]; | |
| 472 scrollbarPartAnimation = nil; | |
| 473 } | |
| 474 | |
| 475 if (part == WebCore::ThumbPart && _scrollbar->orientation() == VerticalScrol
lbar) { | |
| 476 if (newAlpha == 1) { | |
| 477 IntRect thumbRect = IntRect([scrollerPainter rectForPart:NSScrollerK
nob]); | |
| 478 [self scrollAnimator]->setVisibleScrollerThumbRect(thumbRect); | |
| 479 } else | |
| 480 [self scrollAnimator]->setVisibleScrollerThumbRect(IntRect()); | |
| 481 } | |
| 482 | |
| 483 scrollbarPartAnimation.adoptNS([[WebScrollbarPartAnimation alloc] initWithSc
rollbar:_scrollbar | |
| 484 featureTo
Animate:part == ThumbPart ? ThumbAlpha : TrackAlpha | |
| 485 anim
ateFrom:part == ThumbPart ? [scrollerPainter knobAlpha] : [scrollerPainter track
Alpha] | |
| 486 an
imateTo:newAlpha | |
| 487 d
uration:duration]); | |
| 488 [scrollbarPartAnimation.get() startAnimation]; | |
| 489 } | |
| 490 | |
| 491 - (void)scrollerImp:(id)scrollerImp animateKnobAlphaTo:(CGFloat)newKnobAlpha dur
ation:(NSTimeInterval)duration | |
| 492 { | |
| 493 if (!_scrollbar) | |
| 494 return; | |
| 495 | |
| 496 ASSERT(scrollerImp == scrollbarPainterForScrollbar(_scrollbar)); | |
| 497 | |
| 498 ScrollbarPainter scrollerPainter = (ScrollbarPainter)scrollerImp; | |
| 499 [self setUpAlphaAnimation:_knobAlphaAnimation scrollerPainter:scrollerPainte
r part:WebCore::ThumbPart animateAlphaTo:newKnobAlpha duration:duration]; | |
| 500 } | |
| 501 | |
| 502 - (void)scrollerImp:(id)scrollerImp animateTrackAlphaTo:(CGFloat)newTrackAlpha d
uration:(NSTimeInterval)duration | |
| 503 { | |
| 504 if (!_scrollbar) | |
| 505 return; | |
| 506 | |
| 507 ASSERT(scrollerImp == scrollbarPainterForScrollbar(_scrollbar)); | |
| 508 | |
| 509 ScrollbarPainter scrollerPainter = (ScrollbarPainter)scrollerImp; | |
| 510 [self setUpAlphaAnimation:_trackAlphaAnimation scrollerPainter:scrollerPaint
er part:WebCore::BackTrackPart animateAlphaTo:newTrackAlpha duration:duration]; | |
| 511 } | |
| 512 | |
| 513 - (void)scrollerImp:(id)scrollerImp animateUIStateTransitionWithDuration:(NSTime
Interval)duration | |
| 514 { | |
| 515 if (!_scrollbar) | |
| 516 return; | |
| 517 | |
| 518 if (!supportsUIStateTransitionProgress()) | |
| 519 return; | |
| 520 | |
| 521 ASSERT(scrollerImp == scrollbarPainterForScrollbar(_scrollbar)); | |
| 522 | |
| 523 ScrollbarPainter scrollbarPainter = (ScrollbarPainter)scrollerImp; | |
| 524 | |
| 525 // UIStateTransition always animates to 1. In case an animation is in progre
ss this avoids a hard transition. | |
| 526 [scrollbarPainter setUiStateTransitionProgress:1 - [scrollerImp uiStateTrans
itionProgress]]; | |
| 527 | |
| 528 if (!_uiStateTransitionAnimation) | |
| 529 _uiStateTransitionAnimation.adoptNS([[WebScrollbarPartAnimation alloc] i
nitWithScrollbar:_scrollbar | |
| 530
featureToAnimate:UIStateTransition | |
| 531
animateFrom:[scrollbarPainter uiStateTransitionProgress] | |
| 532
animateTo:1.0 | |
| 533
duration:duration]); | |
| 534 else { | |
| 535 // If we don't need to initialize the animation, just reset the values i
n case they have changed. | |
| 536 [_uiStateTransitionAnimation.get() setStartValue:[scrollbarPainter uiSta
teTransitionProgress]]; | |
| 537 [_uiStateTransitionAnimation.get() setEndValue:1.0]; | |
| 538 [_uiStateTransitionAnimation.get() setDuration:duration]; | |
| 539 } | |
| 540 [_uiStateTransitionAnimation.get() startAnimation]; | |
| 541 } | |
| 542 | |
| 543 - (void)scrollerImp:(id)scrollerImp animateExpansionTransitionWithDuration:(NSTi
meInterval)duration | |
| 544 { | |
| 545 if (!_scrollbar) | |
| 546 return; | |
| 547 | |
| 548 if (!supportsExpansionTransitionProgress()) | |
| 549 return; | |
| 550 | |
| 551 ASSERT(scrollerImp == scrollbarPainterForScrollbar(_scrollbar)); | |
| 552 | |
| 553 ScrollbarPainter scrollbarPainter = (ScrollbarPainter)scrollerImp; | |
| 554 | |
| 555 // ExpansionTransition always animates to 1. In case an animation is in prog
ress this avoids a hard transition. | |
| 556 [scrollbarPainter setExpansionTransitionProgress:1 - [scrollerImp expansionT
ransitionProgress]]; | |
| 557 | |
| 558 if (!_expansionTransitionAnimation) { | |
| 559 _expansionTransitionAnimation.adoptNS([[WebScrollbarPartAnimation alloc]
initWithScrollbar:_scrollbar | |
| 560
featureToAnimate:ExpansionTransition | |
| 561
animateFrom:[scrollbarPainter expansionTransitionProgress] | |
| 562
animateTo:1.0 | |
| 563
duration:duration]); | |
| 564 } else { | |
| 565 // If we don't need to initialize the animation, just reset the values i
n case they have changed. | |
| 566 [_expansionTransitionAnimation.get() setStartValue:[scrollbarPainter uiS
tateTransitionProgress]]; | |
| 567 [_expansionTransitionAnimation.get() setEndValue:1.0]; | |
| 568 [_expansionTransitionAnimation.get() setDuration:duration]; | |
| 569 } | |
| 570 [_expansionTransitionAnimation.get() startAnimation]; | |
| 571 } | |
| 572 | |
| 573 - (void)scrollerImp:(id)scrollerImp overlayScrollerStateChangedTo:(NSUInteger)ne
wOverlayScrollerState | |
| 574 { | |
| 575 UNUSED_PARAM(scrollerImp); | |
| 576 UNUSED_PARAM(newOverlayScrollerState); | |
| 577 } | |
| 578 | |
| 579 - (void)invalidate | |
| 580 { | |
| 581 _scrollbar = 0; | |
| 582 BEGIN_BLOCK_OBJC_EXCEPTIONS; | |
| 583 [_knobAlphaAnimation.get() invalidate]; | |
| 584 [_trackAlphaAnimation.get() invalidate]; | |
| 585 [_uiStateTransitionAnimation.get() invalidate]; | |
| 586 [_expansionTransitionAnimation.get() invalidate]; | |
| 587 END_BLOCK_OBJC_EXCEPTIONS; | |
| 588 } | |
| 589 | |
| 590 @end | |
| 591 | |
| 592 namespace WebCore { | |
| 593 | |
| 594 PassOwnPtr<ScrollAnimator> ScrollAnimator::create(ScrollableArea* scrollableArea
) | |
| 595 { | |
| 596 return adoptPtr(new ScrollAnimatorMac(scrollableArea)); | |
| 597 } | |
| 598 | |
| 599 ScrollAnimatorMac::ScrollAnimatorMac(ScrollableArea* scrollableArea) | |
| 600 : ScrollAnimator(scrollableArea) | |
| 601 , m_initialScrollbarPaintTimer(this, &ScrollAnimatorMac::initialScrollbarPai
ntTimerFired) | |
| 602 , m_sendContentAreaScrolledTimer(this, &ScrollAnimatorMac::sendContentAreaSc
rolledTimerFired) | |
| 603 #if USE(RUBBER_BANDING) | |
| 604 , m_scrollElasticityController(this) | |
| 605 , m_snapRubberBandTimer(this, &ScrollAnimatorMac::snapRubberBandTimerFired) | |
| 606 #endif | |
| 607 , m_haveScrolledSincePageLoad(false) | |
| 608 , m_needsScrollerStyleUpdate(false) | |
| 609 { | |
| 610 m_scrollAnimationHelperDelegate.adoptNS([[WebScrollAnimationHelperDelegate a
lloc] initWithScrollAnimator:this]); | |
| 611 m_scrollAnimationHelper.adoptNS([[NSClassFromString(@"NSScrollAnimationHelpe
r") alloc] initWithDelegate:m_scrollAnimationHelperDelegate.get()]); | |
| 612 | |
| 613 if (isScrollbarOverlayAPIAvailable()) { | |
| 614 m_scrollbarPainterControllerDelegate.adoptNS([[WebScrollbarPainterContro
llerDelegate alloc] initWithScrollableArea:scrollableArea]); | |
| 615 m_scrollbarPainterController = [[[NSClassFromString(@"NSScrollerImpPair"
) alloc] init] autorelease]; | |
| 616 [m_scrollbarPainterController.get() setDelegate:m_scrollbarPainterContro
llerDelegate.get()]; | |
| 617 [m_scrollbarPainterController.get() setScrollerStyle:recommendedScroller
Style()]; | |
| 618 } | |
| 619 } | |
| 620 | |
| 621 ScrollAnimatorMac::~ScrollAnimatorMac() | |
| 622 { | |
| 623 if (isScrollbarOverlayAPIAvailable()) { | |
| 624 BEGIN_BLOCK_OBJC_EXCEPTIONS; | |
| 625 [m_scrollbarPainterControllerDelegate.get() invalidate]; | |
| 626 [m_scrollbarPainterController.get() setDelegate:nil]; | |
| 627 [m_horizontalScrollbarPainterDelegate.get() invalidate]; | |
| 628 [m_verticalScrollbarPainterDelegate.get() invalidate]; | |
| 629 [m_scrollAnimationHelperDelegate.get() invalidate]; | |
| 630 END_BLOCK_OBJC_EXCEPTIONS; | |
| 631 } | |
| 632 } | |
| 633 | |
| 634 static bool scrollAnimationEnabledForSystem() | |
| 635 { | |
| 636 NSString* scrollAnimationDefaultsKey = | |
| 637 @"AppleScrollAnimationEnabled"; | |
| 638 static bool enabled = [[NSUserDefaults standardUserDefaults] boolForKey:scro
llAnimationDefaultsKey]; | |
| 639 return enabled; | |
| 640 } | |
| 641 | |
| 642 #if USE(RUBBER_BANDING) | |
| 643 static bool rubberBandingEnabledForSystem() | |
| 644 { | |
| 645 static bool initialized = false; | |
| 646 static bool enabled = true; | |
| 647 // Caches the result, which is consistent with other apps like the Finder, w
hich all | |
| 648 // require a restart after changing this default. | |
| 649 if (!initialized) { | |
| 650 // Uses -objectForKey: and not -boolForKey: in order to default to true
if the value wasn't set. | |
| 651 id value = [[NSUserDefaults standardUserDefaults] objectForKey:@"NSScrol
lViewRubberbanding"]; | |
| 652 if ([value isKindOfClass:[NSNumber class]]) | |
| 653 enabled = [value boolValue]; | |
| 654 initialized = true; | |
| 655 } | |
| 656 return enabled; | |
| 657 } | |
| 658 #endif | |
| 659 | |
| 660 bool ScrollAnimatorMac::scroll(ScrollbarOrientation orientation, ScrollGranulari
ty granularity, float step, float multiplier) | |
| 661 { | |
| 662 m_haveScrolledSincePageLoad = true; | |
| 663 | |
| 664 if (!scrollAnimationEnabledForSystem() || !m_scrollableArea->scrollAnimatorE
nabled()) | |
| 665 return ScrollAnimator::scroll(orientation, granularity, step, multiplier
); | |
| 666 | |
| 667 if (granularity == ScrollByPixel) | |
| 668 return ScrollAnimator::scroll(orientation, granularity, step, multiplier
); | |
| 669 | |
| 670 float currentPos = orientation == HorizontalScrollbar ? m_currentPosX : m_cu
rrentPosY; | |
| 671 float newPos = std::max<float>(std::min<float>(currentPos + (step * multipli
er), m_scrollableArea->maximumScrollPosition(orientation)), m_scrollableArea->mi
nimumScrollPosition(orientation)); | |
| 672 if (currentPos == newPos) | |
| 673 return false; | |
| 674 | |
| 675 NSPoint newPoint; | |
| 676 if ([m_scrollAnimationHelper.get() _isAnimating]) { | |
| 677 NSPoint targetOrigin = [m_scrollAnimationHelper.get() targetOrigin]; | |
| 678 newPoint = orientation == HorizontalScrollbar ? NSMakePoint(newPos, targ
etOrigin.y) : NSMakePoint(targetOrigin.x, newPos); | |
| 679 } else | |
| 680 newPoint = orientation == HorizontalScrollbar ? NSMakePoint(newPos, m_cu
rrentPosY) : NSMakePoint(m_currentPosX, newPos); | |
| 681 | |
| 682 [m_scrollAnimationHelper.get() scrollToPoint:newPoint]; | |
| 683 return true; | |
| 684 } | |
| 685 | |
| 686 void ScrollAnimatorMac::scrollToOffsetWithoutAnimation(const FloatPoint& offset) | |
| 687 { | |
| 688 [m_scrollAnimationHelper.get() _stopRun]; | |
| 689 immediateScrollTo(offset); | |
| 690 } | |
| 691 | |
| 692 FloatPoint ScrollAnimatorMac::adjustScrollPositionIfNecessary(const FloatPoint&
position) const | |
| 693 { | |
| 694 if (!m_scrollableArea->constrainsScrollingToContentEdge()) | |
| 695 return position; | |
| 696 | |
| 697 IntPoint minPos = m_scrollableArea->minimumScrollPosition(); | |
| 698 IntPoint maxPos = m_scrollableArea->maximumScrollPosition(); | |
| 699 | |
| 700 float newX = max<float>(min<float>(position.x(), maxPos.x()), minPos.x()); | |
| 701 float newY = max<float>(min<float>(position.y(), maxPos.y()), minPos.y()); | |
| 702 | |
| 703 return FloatPoint(newX, newY); | |
| 704 } | |
| 705 | |
| 706 void ScrollAnimatorMac::immediateScrollTo(const FloatPoint& newPosition) | |
| 707 { | |
| 708 FloatPoint adjustedPosition = adjustScrollPositionIfNecessary(newPosition); | |
| 709 | |
| 710 bool positionChanged = adjustedPosition.x() != m_currentPosX || adjustedPosi
tion.y() != m_currentPosY; | |
| 711 if (!positionChanged && !scrollableArea()->scrollOriginChanged()) | |
| 712 return; | |
| 713 | |
| 714 FloatSize delta = FloatSize(adjustedPosition.x() - m_currentPosX, adjustedPo
sition.y() - m_currentPosY); | |
| 715 | |
| 716 m_currentPosX = adjustedPosition.x(); | |
| 717 m_currentPosY = adjustedPosition.y(); | |
| 718 notifyPositionChanged(delta); | |
| 719 } | |
| 720 | |
| 721 bool ScrollAnimatorMac::isRubberBandInProgress() const | |
| 722 { | |
| 723 #if !USE(RUBBER_BANDING) | |
| 724 return false; | |
| 725 #else | |
| 726 return m_scrollElasticityController.isRubberBandInProgress(); | |
| 727 #endif | |
| 728 } | |
| 729 | |
| 730 void ScrollAnimatorMac::immediateScrollToPointForScrollAnimation(const FloatPoin
t& newPosition) | |
| 731 { | |
| 732 ASSERT(m_scrollAnimationHelper); | |
| 733 immediateScrollTo(newPosition); | |
| 734 } | |
| 735 | |
| 736 void ScrollAnimatorMac::notifyPositionChanged(const FloatSize& delta) | |
| 737 { | |
| 738 notifyContentAreaScrolled(delta); | |
| 739 ScrollAnimator::notifyPositionChanged(delta); | |
| 740 } | |
| 741 | |
| 742 void ScrollAnimatorMac::contentAreaWillPaint() const | |
| 743 { | |
| 744 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 745 return; | |
| 746 if (isScrollbarOverlayAPIAvailable()) | |
| 747 [m_scrollbarPainterController.get() contentAreaWillDraw]; | |
| 748 } | |
| 749 | |
| 750 void ScrollAnimatorMac::mouseEnteredContentArea() const | |
| 751 { | |
| 752 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 753 return; | |
| 754 if (isScrollbarOverlayAPIAvailable()) | |
| 755 [m_scrollbarPainterController.get() mouseEnteredContentArea]; | |
| 756 } | |
| 757 | |
| 758 void ScrollAnimatorMac::mouseExitedContentArea() const | |
| 759 { | |
| 760 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 761 return; | |
| 762 if (isScrollbarOverlayAPIAvailable()) | |
| 763 [m_scrollbarPainterController.get() mouseExitedContentArea]; | |
| 764 } | |
| 765 | |
| 766 void ScrollAnimatorMac::mouseMovedInContentArea() const | |
| 767 { | |
| 768 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 769 return; | |
| 770 if (isScrollbarOverlayAPIAvailable()) | |
| 771 [m_scrollbarPainterController.get() mouseMovedInContentArea]; | |
| 772 } | |
| 773 | |
| 774 void ScrollAnimatorMac::mouseEnteredScrollbar(Scrollbar* scrollbar) const | |
| 775 { | |
| 776 // At this time, only legacy scrollbars needs to send notifications here. | |
| 777 if (recommendedScrollerStyle() != NSScrollerStyleLegacy) | |
| 778 return; | |
| 779 | |
| 780 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 781 return; | |
| 782 | |
| 783 if (isScrollbarOverlayAPIAvailable()) { | |
| 784 if (!supportsUIStateTransitionProgress()) | |
| 785 return; | |
| 786 if (ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar)) | |
| 787 [painter mouseEnteredScroller]; | |
| 788 } | |
| 789 } | |
| 790 | |
| 791 void ScrollAnimatorMac::mouseExitedScrollbar(Scrollbar* scrollbar) const | |
| 792 { | |
| 793 // At this time, only legacy scrollbars needs to send notifications here. | |
| 794 if (recommendedScrollerStyle() != NSScrollerStyleLegacy) | |
| 795 return; | |
| 796 | |
| 797 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 798 return; | |
| 799 | |
| 800 if (isScrollbarOverlayAPIAvailable()) { | |
| 801 if (!supportsUIStateTransitionProgress()) | |
| 802 return; | |
| 803 if (ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar)) | |
| 804 [painter mouseExitedScroller]; | |
| 805 } | |
| 806 } | |
| 807 | |
| 808 void ScrollAnimatorMac::willStartLiveResize() | |
| 809 { | |
| 810 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 811 return; | |
| 812 if (isScrollbarOverlayAPIAvailable()) | |
| 813 [m_scrollbarPainterController.get() startLiveResize]; | |
| 814 } | |
| 815 | |
| 816 void ScrollAnimatorMac::contentsResized() const | |
| 817 { | |
| 818 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 819 return; | |
| 820 if (isScrollbarOverlayAPIAvailable()) | |
| 821 [m_scrollbarPainterController.get() contentAreaDidResize]; | |
| 822 } | |
| 823 | |
| 824 void ScrollAnimatorMac::willEndLiveResize() | |
| 825 { | |
| 826 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 827 return; | |
| 828 if (isScrollbarOverlayAPIAvailable()) | |
| 829 [m_scrollbarPainterController.get() endLiveResize]; | |
| 830 } | |
| 831 | |
| 832 void ScrollAnimatorMac::contentAreaDidShow() const | |
| 833 { | |
| 834 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 835 return; | |
| 836 if (isScrollbarOverlayAPIAvailable()) | |
| 837 [m_scrollbarPainterController.get() windowOrderedIn]; | |
| 838 } | |
| 839 | |
| 840 void ScrollAnimatorMac::contentAreaDidHide() const | |
| 841 { | |
| 842 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 843 return; | |
| 844 if (isScrollbarOverlayAPIAvailable()) | |
| 845 [m_scrollbarPainterController.get() windowOrderedOut]; | |
| 846 } | |
| 847 | |
| 848 void ScrollAnimatorMac::didBeginScrollGesture() const | |
| 849 { | |
| 850 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 851 return; | |
| 852 if (isScrollbarOverlayAPIAvailable()) | |
| 853 [m_scrollbarPainterController.get() beginScrollGesture]; | |
| 854 } | |
| 855 | |
| 856 void ScrollAnimatorMac::didEndScrollGesture() const | |
| 857 { | |
| 858 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 859 return; | |
| 860 if (isScrollbarOverlayAPIAvailable()) | |
| 861 [m_scrollbarPainterController.get() endScrollGesture]; | |
| 862 } | |
| 863 | |
| 864 void ScrollAnimatorMac::mayBeginScrollGesture() const | |
| 865 { | |
| 866 if (!scrollableArea()->scrollbarsCanBeActive()) | |
| 867 return; | |
| 868 if (!isScrollbarOverlayAPIAvailable()) | |
| 869 return; | |
| 870 | |
| 871 [m_scrollbarPainterController.get() beginScrollGesture]; | |
| 872 [m_scrollbarPainterController.get() contentAreaScrolled]; | |
| 873 } | |
| 874 | |
| 875 void ScrollAnimatorMac::finishCurrentScrollAnimations() | |
| 876 { | |
| 877 if (isScrollbarOverlayAPIAvailable()) { | |
| 878 [m_scrollbarPainterController.get() hideOverlayScrollers]; | |
| 879 } | |
| 880 } | |
| 881 | |
| 882 void ScrollAnimatorMac::didAddVerticalScrollbar(Scrollbar* scrollbar) | |
| 883 { | |
| 884 if (!isScrollbarOverlayAPIAvailable()) | |
| 885 return; | |
| 886 | |
| 887 ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar); | |
| 888 if (!painter) | |
| 889 return; | |
| 890 | |
| 891 ASSERT(!m_verticalScrollbarPainterDelegate); | |
| 892 m_verticalScrollbarPainterDelegate.adoptNS([[WebScrollbarPainterDelegate all
oc] initWithScrollbar:scrollbar]); | |
| 893 | |
| 894 [painter setDelegate:m_verticalScrollbarPainterDelegate.get()]; | |
| 895 [m_scrollbarPainterController.get() setVerticalScrollerImp:painter]; | |
| 896 if (scrollableArea()->inLiveResize()) | |
| 897 [painter setKnobAlpha:1]; | |
| 898 } | |
| 899 | |
| 900 void ScrollAnimatorMac::willRemoveVerticalScrollbar(Scrollbar* scrollbar) | |
| 901 { | |
| 902 if (!isScrollbarOverlayAPIAvailable()) | |
| 903 return; | |
| 904 | |
| 905 ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar); | |
| 906 if (!painter) | |
| 907 return; | |
| 908 | |
| 909 ASSERT(m_verticalScrollbarPainterDelegate); | |
| 910 [m_verticalScrollbarPainterDelegate.get() invalidate]; | |
| 911 m_verticalScrollbarPainterDelegate = nullptr; | |
| 912 | |
| 913 [painter setDelegate:nil]; | |
| 914 [m_scrollbarPainterController.get() setVerticalScrollerImp:nil]; | |
| 915 } | |
| 916 | |
| 917 void ScrollAnimatorMac::didAddHorizontalScrollbar(Scrollbar* scrollbar) | |
| 918 { | |
| 919 if (!isScrollbarOverlayAPIAvailable()) | |
| 920 return; | |
| 921 | |
| 922 ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar); | |
| 923 if (!painter) | |
| 924 return; | |
| 925 | |
| 926 ASSERT(!m_horizontalScrollbarPainterDelegate); | |
| 927 m_horizontalScrollbarPainterDelegate.adoptNS([[WebScrollbarPainterDelegate a
lloc] initWithScrollbar:scrollbar]); | |
| 928 | |
| 929 [painter setDelegate:m_horizontalScrollbarPainterDelegate.get()]; | |
| 930 [m_scrollbarPainterController.get() setHorizontalScrollerImp:painter]; | |
| 931 if (scrollableArea()->inLiveResize()) | |
| 932 [painter setKnobAlpha:1]; | |
| 933 } | |
| 934 | |
| 935 void ScrollAnimatorMac::willRemoveHorizontalScrollbar(Scrollbar* scrollbar) | |
| 936 { | |
| 937 if (!isScrollbarOverlayAPIAvailable()) | |
| 938 return; | |
| 939 | |
| 940 ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar); | |
| 941 if (!painter) | |
| 942 return; | |
| 943 | |
| 944 ASSERT(m_horizontalScrollbarPainterDelegate); | |
| 945 [m_horizontalScrollbarPainterDelegate.get() invalidate]; | |
| 946 m_horizontalScrollbarPainterDelegate = nullptr; | |
| 947 | |
| 948 [painter setDelegate:nil]; | |
| 949 [m_scrollbarPainterController.get() setHorizontalScrollerImp:nil]; | |
| 950 } | |
| 951 | |
| 952 bool ScrollAnimatorMac::shouldScrollbarParticipateInHitTesting(Scrollbar* scroll
bar) | |
| 953 { | |
| 954 // Non-overlay scrollbars should always participate in hit testing. | |
| 955 if (recommendedScrollerStyle() != NSScrollerStyleOverlay) | |
| 956 return true; | |
| 957 | |
| 958 if (!isScrollbarOverlayAPIAvailable()) | |
| 959 return true; | |
| 960 | |
| 961 if (scrollbar->isAlphaLocked()) | |
| 962 return true; | |
| 963 | |
| 964 // Overlay scrollbars should participate in hit testing whenever they are at
all visible. | |
| 965 ScrollbarPainter painter = scrollbarPainterForScrollbar(scrollbar); | |
| 966 if (!painter) | |
| 967 return false; | |
| 968 return [painter knobAlpha] > 0; | |
| 969 } | |
| 970 | |
| 971 void ScrollAnimatorMac::notifyContentAreaScrolled(const FloatSize& delta) | |
| 972 { | |
| 973 if (!isScrollbarOverlayAPIAvailable()) | |
| 974 return; | |
| 975 | |
| 976 // This function is called when a page is going into the page cache, but the
page | |
| 977 // isn't really scrolling in that case. We should only pass the message on t
o the | |
| 978 // ScrollbarPainterController when we're really scrolling on an active page. | |
| 979 if (scrollableArea()->scrollbarsCanBeActive()) | |
| 980 sendContentAreaScrolledSoon(delta); | |
| 981 } | |
| 982 | |
| 983 void ScrollAnimatorMac::cancelAnimations() | |
| 984 { | |
| 985 m_haveScrolledSincePageLoad = false; | |
| 986 | |
| 987 if (isScrollbarOverlayAPIAvailable()) { | |
| 988 if (scrollbarPaintTimerIsActive()) | |
| 989 stopScrollbarPaintTimer(); | |
| 990 [m_horizontalScrollbarPainterDelegate.get() cancelAnimations]; | |
| 991 [m_verticalScrollbarPainterDelegate.get() cancelAnimations]; | |
| 992 } | |
| 993 } | |
| 994 | |
| 995 void ScrollAnimatorMac::handleWheelEventPhase(PlatformWheelEventPhase phase) | |
| 996 { | |
| 997 // This may not have been set to true yet if the wheel event was handled by
the ScrollingTree, | |
| 998 // So set it to true here. | |
| 999 m_haveScrolledSincePageLoad = true; | |
| 1000 | |
| 1001 if (phase == PlatformWheelEventPhaseBegan) | |
| 1002 didBeginScrollGesture(); | |
| 1003 else if (phase == PlatformWheelEventPhaseEnded || phase == PlatformWheelEven
tPhaseCancelled) | |
| 1004 didEndScrollGesture(); | |
| 1005 else if (phase == PlatformWheelEventPhaseMayBegin) | |
| 1006 mayBeginScrollGesture(); | |
| 1007 } | |
| 1008 | |
| 1009 #if USE(RUBBER_BANDING) | |
| 1010 bool ScrollAnimatorMac::handleWheelEvent(const PlatformWheelEvent& wheelEvent) | |
| 1011 { | |
| 1012 m_haveScrolledSincePageLoad = true; | |
| 1013 | |
| 1014 if (!wheelEvent.hasPreciseScrollingDeltas() || !rubberBandingEnabledForSyste
m()) | |
| 1015 return ScrollAnimator::handleWheelEvent(wheelEvent); | |
| 1016 | |
| 1017 // FIXME: This is somewhat roundabout hack to allow forwarding wheel events | |
| 1018 // up to the parent scrollable area. It takes advantage of the fact that | |
| 1019 // the base class implementation of handleWheelEvent will not accept the | |
| 1020 // wheel event if there is nowhere to scroll. | |
| 1021 if (fabsf(wheelEvent.deltaY()) >= fabsf(wheelEvent.deltaX())) { | |
| 1022 if (!allowsVerticalStretching()) | |
| 1023 return ScrollAnimator::handleWheelEvent(wheelEvent); | |
| 1024 } else { | |
| 1025 if (!allowsHorizontalStretching()) | |
| 1026 return ScrollAnimator::handleWheelEvent(wheelEvent); | |
| 1027 } | |
| 1028 | |
| 1029 bool didHandleEvent = m_scrollElasticityController.handleWheelEvent(wheelEve
nt); | |
| 1030 | |
| 1031 // The elasticity controller can return false on a phase end event if rubber
banding wasn't in progress. | |
| 1032 // In this case, the wheel phase must still be handled so that that overlay
scroll bars get hidden. | |
| 1033 if (didHandleEvent || wheelEvent.phase() == PlatformWheelEventPhaseEnded ||
wheelEvent.phase() == PlatformWheelEventPhaseCancelled) | |
| 1034 handleWheelEventPhase(wheelEvent.phase()); | |
| 1035 | |
| 1036 return didHandleEvent; | |
| 1037 } | |
| 1038 | |
| 1039 bool ScrollAnimatorMac::pinnedInDirection(float deltaX, float deltaY) | |
| 1040 { | |
| 1041 FloatSize limitDelta; | |
| 1042 if (fabsf(deltaY) >= fabsf(deltaX)) { | |
| 1043 if (deltaY < 0) { | |
| 1044 // We are trying to scroll up. Make sure we are not pinned to the t
op | |
| 1045 limitDelta.setHeight(m_scrollableArea->visibleContentRect().y() + +
m_scrollableArea->scrollOrigin().y()); | |
| 1046 } else { | |
| 1047 // We are trying to scroll down. Make sure we are not pinned to the
bottom | |
| 1048 limitDelta.setHeight(m_scrollableArea->contentsSize().height() - (m_
scrollableArea->visibleContentRect().maxY() + m_scrollableArea->scrollOrigin().y
())); | |
| 1049 } | |
| 1050 } else if (deltaX != 0) { | |
| 1051 if (deltaX < 0) { | |
| 1052 // We are trying to scroll left. Make sure we are not pinned to the
left | |
| 1053 limitDelta.setWidth(m_scrollableArea->visibleContentRect().x() + m_s
crollableArea->scrollOrigin().x()); | |
| 1054 } else { | |
| 1055 // We are trying to scroll right. Make sure we are not pinned to th
e right | |
| 1056 limitDelta.setWidth(m_scrollableArea->contentsSize().width() - (m_sc
rollableArea->visibleContentRect().maxX() + m_scrollableArea->scrollOrigin().x()
)); | |
| 1057 } | |
| 1058 } | |
| 1059 | |
| 1060 if ((deltaX != 0 || deltaY != 0) && (limitDelta.width() < 1 && limitDelta.he
ight() < 1)) | |
| 1061 return true; | |
| 1062 return false; | |
| 1063 } | |
| 1064 | |
| 1065 bool ScrollAnimatorMac::allowsVerticalStretching() | |
| 1066 { | |
| 1067 switch (m_scrollableArea->verticalScrollElasticity()) { | |
| 1068 case ScrollElasticityAutomatic: { | |
| 1069 Scrollbar* hScroller = m_scrollableArea->horizontalScrollbar(); | |
| 1070 Scrollbar* vScroller = m_scrollableArea->verticalScrollbar(); | |
| 1071 return (((vScroller && vScroller->enabled()) || (!hScroller || !hScrolle
r->enabled()))); | |
| 1072 } | |
| 1073 case ScrollElasticityNone: | |
| 1074 return false; | |
| 1075 case ScrollElasticityAllowed: | |
| 1076 return true; | |
| 1077 } | |
| 1078 | |
| 1079 ASSERT_NOT_REACHED(); | |
| 1080 return false; | |
| 1081 } | |
| 1082 | |
| 1083 bool ScrollAnimatorMac::allowsHorizontalStretching() | |
| 1084 { | |
| 1085 switch (m_scrollableArea->horizontalScrollElasticity()) { | |
| 1086 case ScrollElasticityAutomatic: { | |
| 1087 Scrollbar* hScroller = m_scrollableArea->horizontalScrollbar(); | |
| 1088 Scrollbar* vScroller = m_scrollableArea->verticalScrollbar(); | |
| 1089 return (((hScroller && hScroller->enabled()) || (!vScroller || !vScrolle
r->enabled()))); | |
| 1090 } | |
| 1091 case ScrollElasticityNone: | |
| 1092 return false; | |
| 1093 case ScrollElasticityAllowed: | |
| 1094 return true; | |
| 1095 } | |
| 1096 | |
| 1097 ASSERT_NOT_REACHED(); | |
| 1098 return false; | |
| 1099 } | |
| 1100 | |
| 1101 IntSize ScrollAnimatorMac::stretchAmount() | |
| 1102 { | |
| 1103 return m_scrollableArea->overhangAmount(); | |
| 1104 } | |
| 1105 | |
| 1106 bool ScrollAnimatorMac::pinnedInDirection(const FloatSize& direction) | |
| 1107 { | |
| 1108 return pinnedInDirection(direction.width(), direction.height()); | |
| 1109 } | |
| 1110 | |
| 1111 bool ScrollAnimatorMac::canScrollHorizontally() | |
| 1112 { | |
| 1113 Scrollbar* scrollbar = m_scrollableArea->horizontalScrollbar(); | |
| 1114 if (!scrollbar) | |
| 1115 return false; | |
| 1116 return scrollbar->enabled(); | |
| 1117 } | |
| 1118 | |
| 1119 bool ScrollAnimatorMac::canScrollVertically() | |
| 1120 { | |
| 1121 Scrollbar* scrollbar = m_scrollableArea->verticalScrollbar(); | |
| 1122 if (!scrollbar) | |
| 1123 return false; | |
| 1124 return scrollbar->enabled(); | |
| 1125 } | |
| 1126 | |
| 1127 bool ScrollAnimatorMac::shouldRubberBandInDirection(ScrollDirection direction) | |
| 1128 { | |
| 1129 return m_scrollableArea->shouldRubberBandInDirection(direction); | |
| 1130 } | |
| 1131 | |
| 1132 IntPoint ScrollAnimatorMac::absoluteScrollPosition() | |
| 1133 { | |
| 1134 return m_scrollableArea->visibleContentRect().location() + m_scrollableArea-
>scrollOrigin(); | |
| 1135 } | |
| 1136 | |
| 1137 void ScrollAnimatorMac::immediateScrollByWithoutContentEdgeConstraints(const Flo
atSize& delta) | |
| 1138 { | |
| 1139 m_scrollableArea->setConstrainsScrollingToContentEdge(false); | |
| 1140 immediateScrollBy(delta); | |
| 1141 m_scrollableArea->setConstrainsScrollingToContentEdge(true); | |
| 1142 } | |
| 1143 | |
| 1144 void ScrollAnimatorMac::immediateScrollBy(const FloatSize& delta) | |
| 1145 { | |
| 1146 FloatPoint newPos = adjustScrollPositionIfNecessary(FloatPoint(m_currentPosX
, m_currentPosY) + delta); | |
| 1147 if (newPos.x() == m_currentPosX && newPos.y() == m_currentPosY) | |
| 1148 return; | |
| 1149 | |
| 1150 FloatSize adjustedDelta = FloatSize(newPos.x() - m_currentPosX, newPos.y() -
m_currentPosY); | |
| 1151 | |
| 1152 m_currentPosX = newPos.x(); | |
| 1153 m_currentPosY = newPos.y(); | |
| 1154 notifyPositionChanged(adjustedDelta); | |
| 1155 } | |
| 1156 | |
| 1157 void ScrollAnimatorMac::startSnapRubberbandTimer() | |
| 1158 { | |
| 1159 m_snapRubberBandTimer.startRepeating(1.0 / 60.0); | |
| 1160 } | |
| 1161 | |
| 1162 void ScrollAnimatorMac::stopSnapRubberbandTimer() | |
| 1163 { | |
| 1164 m_snapRubberBandTimer.stop(); | |
| 1165 } | |
| 1166 | |
| 1167 void ScrollAnimatorMac::snapRubberBandTimerFired(Timer<ScrollAnimatorMac>*) | |
| 1168 { | |
| 1169 m_scrollElasticityController.snapRubberBandTimerFired(); | |
| 1170 } | |
| 1171 #endif | |
| 1172 | |
| 1173 void ScrollAnimatorMac::setIsActive() | |
| 1174 { | |
| 1175 if (!isScrollbarOverlayAPIAvailable()) | |
| 1176 return; | |
| 1177 | |
| 1178 if (!m_needsScrollerStyleUpdate) | |
| 1179 return; | |
| 1180 | |
| 1181 updateScrollerStyle(); | |
| 1182 } | |
| 1183 | |
| 1184 void ScrollAnimatorMac::updateScrollerStyle() | |
| 1185 { | |
| 1186 if (!isScrollbarOverlayAPIAvailable()) | |
| 1187 return; | |
| 1188 | |
| 1189 if (!scrollableArea()->scrollbarsCanBeActive()) { | |
| 1190 m_needsScrollerStyleUpdate = true; | |
| 1191 return; | |
| 1192 } | |
| 1193 | |
| 1194 ScrollbarThemeMacOverlayAPI* macTheme = macOverlayScrollbarTheme(); | |
| 1195 if (!macTheme) { | |
| 1196 m_needsScrollerStyleUpdate = false; | |
| 1197 return; | |
| 1198 } | |
| 1199 | |
| 1200 NSScrollerStyle newStyle = [m_scrollbarPainterController.get() scrollerStyle
]; | |
| 1201 | |
| 1202 if (Scrollbar* verticalScrollbar = scrollableArea()->verticalScrollbar()) { | |
| 1203 verticalScrollbar->invalidate(); | |
| 1204 | |
| 1205 ScrollbarPainter oldVerticalPainter = [m_scrollbarPainterController.get(
) verticalScrollerImp]; | |
| 1206 ScrollbarPainter newVerticalPainter = [NSClassFromString(@"NSScrollerImp
") scrollerImpWithStyle:newStyle | |
| 1207
controlSize:(NSControlSize)verticalScrollbar->controlSize() | |
| 1208
horizontal:NO | |
| 1209
replacingScrollerImp:oldVerticalPainter]; | |
| 1210 [m_scrollbarPainterController.get() setVerticalScrollerImp:newVerticalPa
inter]; | |
| 1211 macTheme->setNewPainterForScrollbar(verticalScrollbar, newVerticalPainte
r); | |
| 1212 | |
| 1213 // The different scrollbar styles have different thicknesses, so we must
re-set the | |
| 1214 // frameRect to the new thickness, and the re-layout below will ensure t
he position | |
| 1215 // and length are properly updated. | |
| 1216 int thickness = macTheme->scrollbarThickness(verticalScrollbar->controlS
ize()); | |
| 1217 verticalScrollbar->setFrameRect(IntRect(0, 0, thickness, thickness)); | |
| 1218 } | |
| 1219 | |
| 1220 if (Scrollbar* horizontalScrollbar = scrollableArea()->horizontalScrollbar()
) { | |
| 1221 horizontalScrollbar->invalidate(); | |
| 1222 | |
| 1223 ScrollbarPainter oldHorizontalPainter = [m_scrollbarPainterController.ge
t() horizontalScrollerImp]; | |
| 1224 ScrollbarPainter newHorizontalPainter = [NSClassFromString(@"NSScrollerI
mp") scrollerImpWithStyle:newStyle | |
| 1225
controlSize:(NSControlSize)horizontalScrollbar->controlSize() | |
| 1226
horizontal:YES | |
| 1227
replacingScrollerImp:oldHorizontalPainter]; | |
| 1228 [m_scrollbarPainterController.get() setHorizontalScrollerImp:newHorizont
alPainter]; | |
| 1229 macTheme->setNewPainterForScrollbar(horizontalScrollbar, newHorizontalPa
inter); | |
| 1230 | |
| 1231 // The different scrollbar styles have different thicknesses, so we must
re-set the | |
| 1232 // frameRect to the new thickness, and the re-layout below will ensure t
he position | |
| 1233 // and length are properly updated. | |
| 1234 int thickness = macTheme->scrollbarThickness(horizontalScrollbar->contro
lSize()); | |
| 1235 horizontalScrollbar->setFrameRect(IntRect(0, 0, thickness, thickness)); | |
| 1236 } | |
| 1237 | |
| 1238 // If m_needsScrollerStyleUpdate is true, then the page is restoring from th
e page cache, and | |
| 1239 // a relayout will happen on its own. Otherwise, we must initiate a re-layou
t ourselves. | |
| 1240 scrollableArea()->scrollbarStyleChanged(newStyle, !m_needsScrollerStyleUpdat
e); | |
| 1241 | |
| 1242 m_needsScrollerStyleUpdate = false; | |
| 1243 } | |
| 1244 | |
| 1245 void ScrollAnimatorMac::startScrollbarPaintTimer() | |
| 1246 { | |
| 1247 m_initialScrollbarPaintTimer.startOneShot(0.1); | |
| 1248 } | |
| 1249 | |
| 1250 bool ScrollAnimatorMac::scrollbarPaintTimerIsActive() const | |
| 1251 { | |
| 1252 return m_initialScrollbarPaintTimer.isActive(); | |
| 1253 } | |
| 1254 | |
| 1255 void ScrollAnimatorMac::stopScrollbarPaintTimer() | |
| 1256 { | |
| 1257 m_initialScrollbarPaintTimer.stop(); | |
| 1258 } | |
| 1259 | |
| 1260 void ScrollAnimatorMac::initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>
*) | |
| 1261 { | |
| 1262 if (isScrollbarOverlayAPIAvailable()) { | |
| 1263 // To force the scrollbars to flash, we have to call hide first. Otherwi
se, the ScrollbarPainterController | |
| 1264 // might think that the scrollbars are already showing and bail early. | |
| 1265 [m_scrollbarPainterController.get() hideOverlayScrollers]; | |
| 1266 [m_scrollbarPainterController.get() flashScrollers]; | |
| 1267 } | |
| 1268 } | |
| 1269 | |
| 1270 void ScrollAnimatorMac::sendContentAreaScrolledSoon(const FloatSize& delta) | |
| 1271 { | |
| 1272 m_contentAreaScrolledTimerScrollDelta = delta; | |
| 1273 | |
| 1274 if (!m_sendContentAreaScrolledTimer.isActive()) | |
| 1275 m_sendContentAreaScrolledTimer.startOneShot(0); | |
| 1276 } | |
| 1277 | |
| 1278 void ScrollAnimatorMac::sendContentAreaScrolledTimerFired(Timer<ScrollAnimatorMa
c>*) | |
| 1279 { | |
| 1280 if (supportsContentAreaScrolledInDirection()) { | |
| 1281 [m_scrollbarPainterController.get() contentAreaScrolledInDirection:NSMak
ePoint(m_contentAreaScrolledTimerScrollDelta.width(), m_contentAreaScrolledTimer
ScrollDelta.height())]; | |
| 1282 m_contentAreaScrolledTimerScrollDelta = FloatSize(); | |
| 1283 } else | |
| 1284 [m_scrollbarPainterController.get() contentAreaScrolled]; | |
| 1285 } | |
| 1286 | |
| 1287 void ScrollAnimatorMac::setVisibleScrollerThumbRect(const IntRect& scrollerThumb
) | |
| 1288 { | |
| 1289 IntRect rectInViewCoordinates = scrollerThumb; | |
| 1290 if (Scrollbar* verticalScrollbar = m_scrollableArea->verticalScrollbar()) | |
| 1291 rectInViewCoordinates = verticalScrollbar->convertToContainingView(scrol
lerThumb); | |
| 1292 | |
| 1293 if (rectInViewCoordinates == m_visibleScrollerThumbRect) | |
| 1294 return; | |
| 1295 | |
| 1296 m_visibleScrollerThumbRect = rectInViewCoordinates; | |
| 1297 } | |
| 1298 | |
| 1299 bool ScrollAnimatorMac::canUseCoordinatedScrollbar() { | |
| 1300 return isScrollbarOverlayAPIAvailable(); | |
| 1301 } | |
| 1302 | |
| 1303 } // namespace WebCore | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk