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| 1 /* | |
| 2 * Copyright (C) 2004, 2006, 2008 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 COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "core/platform/Scrollbar.h" | |
| 28 | |
| 29 #include <algorithm> | |
| 30 #include "core/platform/ScrollAnimator.h" | |
| 31 #include "core/platform/ScrollView.h" | |
| 32 #include "core/platform/ScrollableArea.h" | |
| 33 #include "core/platform/ScrollbarTheme.h" | |
| 34 #include "core/platform/graphics/GraphicsContext.h" | |
| 35 | |
| 36 #include "platform/PlatformGestureEvent.h" | |
| 37 #include "platform/PlatformMouseEvent.h" | |
| 38 | |
| 39 using namespace std; | |
| 40 | |
| 41 #if OS(POSIX) && !OS(MACOSX) | |
| 42 // The position of the scrollbar thumb affects the appearance of the steppers, s
o | |
| 43 // when the thumb moves, we have to invalidate them for painting. | |
| 44 #define THUMB_POSITION_AFFECTS_BUTTONS | |
| 45 #endif | |
| 46 | |
| 47 namespace WebCore { | |
| 48 | |
| 49 PassRefPtr<Scrollbar> Scrollbar::create(ScrollableArea* scrollableArea, Scrollba
rOrientation orientation, ScrollbarControlSize size) | |
| 50 { | |
| 51 return adoptRef(new Scrollbar(scrollableArea, orientation, size)); | |
| 52 } | |
| 53 | |
| 54 Scrollbar::Scrollbar(ScrollableArea* scrollableArea, ScrollbarOrientation orient
ation, ScrollbarControlSize controlSize, ScrollbarTheme* theme) | |
| 55 : m_scrollableArea(scrollableArea) | |
| 56 , m_orientation(orientation) | |
| 57 , m_controlSize(controlSize) | |
| 58 , m_theme(theme) | |
| 59 , m_visibleSize(0) | |
| 60 , m_totalSize(0) | |
| 61 , m_currentPos(0) | |
| 62 , m_dragOrigin(0) | |
| 63 , m_hoveredPart(NoPart) | |
| 64 , m_pressedPart(NoPart) | |
| 65 , m_pressedPos(0) | |
| 66 , m_scrollPos(0) | |
| 67 , m_draggingDocument(false) | |
| 68 , m_documentDragPos(0) | |
| 69 , m_enabled(true) | |
| 70 , m_scrollTimer(this, &Scrollbar::autoscrollTimerFired) | |
| 71 , m_overlapsResizer(false) | |
| 72 , m_suppressInvalidation(false) | |
| 73 , m_isAlphaLocked(false) | |
| 74 { | |
| 75 if (!m_theme) | |
| 76 m_theme = ScrollbarTheme::theme(); | |
| 77 | |
| 78 m_theme->registerScrollbar(this); | |
| 79 | |
| 80 // FIXME: This is ugly and would not be necessary if we fix cross-platform c
ode to actually query for | |
| 81 // scrollbar thickness and use it when sizing scrollbars (rather than leavin
g one dimension of the scrollbar | |
| 82 // alone when sizing). | |
| 83 int thickness = m_theme->scrollbarThickness(controlSize); | |
| 84 Widget::setFrameRect(IntRect(0, 0, thickness, thickness)); | |
| 85 | |
| 86 m_currentPos = scrollableAreaCurrentPos(); | |
| 87 } | |
| 88 | |
| 89 Scrollbar::~Scrollbar() | |
| 90 { | |
| 91 stopTimerIfNeeded(); | |
| 92 | |
| 93 m_theme->unregisterScrollbar(this); | |
| 94 } | |
| 95 | |
| 96 void Scrollbar::removeFromParent() | |
| 97 { | |
| 98 if (parent()) | |
| 99 toScrollView(parent())->removeChild(this); | |
| 100 } | |
| 101 | |
| 102 ScrollView* Scrollbar::parentScrollView() const | |
| 103 { | |
| 104 return toScrollView(parent()); | |
| 105 } | |
| 106 | |
| 107 ScrollView* Scrollbar::rootScrollView() const | |
| 108 { | |
| 109 return toScrollView(root()); | |
| 110 } | |
| 111 | |
| 112 ScrollbarOverlayStyle Scrollbar::scrollbarOverlayStyle() const | |
| 113 { | |
| 114 return m_scrollableArea ? m_scrollableArea->scrollbarOverlayStyle() : Scroll
barOverlayStyleDefault; | |
| 115 } | |
| 116 | |
| 117 void Scrollbar::getTickmarks(Vector<IntRect>& tickmarks) const | |
| 118 { | |
| 119 if (m_scrollableArea) | |
| 120 m_scrollableArea->getTickmarks(tickmarks); | |
| 121 } | |
| 122 | |
| 123 bool Scrollbar::isScrollableAreaActive() const | |
| 124 { | |
| 125 return m_scrollableArea && m_scrollableArea->isActive(); | |
| 126 } | |
| 127 | |
| 128 bool Scrollbar::isScrollViewScrollbar() const | |
| 129 { | |
| 130 return parent() && parent()->isFrameView() && toScrollView(parent())->isScro
llViewScrollbar(this); | |
| 131 } | |
| 132 | |
| 133 bool Scrollbar::isLeftSideVerticalScrollbar() const | |
| 134 { | |
| 135 if (m_orientation == VerticalScrollbar && m_scrollableArea) | |
| 136 return m_scrollableArea->shouldPlaceVerticalScrollbarOnLeft(); | |
| 137 return false; | |
| 138 } | |
| 139 | |
| 140 void Scrollbar::offsetDidChange() | |
| 141 { | |
| 142 ASSERT(m_scrollableArea); | |
| 143 | |
| 144 float position = scrollableAreaCurrentPos(); | |
| 145 if (position == m_currentPos) | |
| 146 return; | |
| 147 | |
| 148 int oldThumbPosition = theme()->thumbPosition(this); | |
| 149 m_currentPos = position; | |
| 150 updateThumbPosition(); | |
| 151 if (m_pressedPart == ThumbPart) | |
| 152 setPressedPos(m_pressedPos + theme()->thumbPosition(this) - oldThumbPosi
tion); | |
| 153 } | |
| 154 | |
| 155 void Scrollbar::setProportion(int visibleSize, int totalSize) | |
| 156 { | |
| 157 if (visibleSize == m_visibleSize && totalSize == m_totalSize) | |
| 158 return; | |
| 159 | |
| 160 m_visibleSize = visibleSize; | |
| 161 m_totalSize = totalSize; | |
| 162 | |
| 163 updateThumbProportion(); | |
| 164 } | |
| 165 | |
| 166 void Scrollbar::updateThumb() | |
| 167 { | |
| 168 #ifdef THUMB_POSITION_AFFECTS_BUTTONS | |
| 169 invalidate(); | |
| 170 #else | |
| 171 theme()->invalidateParts(this, ForwardTrackPart | BackTrackPart | ThumbPart)
; | |
| 172 #endif | |
| 173 } | |
| 174 | |
| 175 void Scrollbar::updateThumbPosition() | |
| 176 { | |
| 177 updateThumb(); | |
| 178 } | |
| 179 | |
| 180 void Scrollbar::updateThumbProportion() | |
| 181 { | |
| 182 updateThumb(); | |
| 183 } | |
| 184 | |
| 185 void Scrollbar::paint(GraphicsContext* context, const IntRect& damageRect) | |
| 186 { | |
| 187 if (context->updatingControlTints() && theme()->supportsControlTints()) { | |
| 188 invalidate(); | |
| 189 return; | |
| 190 } | |
| 191 | |
| 192 if (context->paintingDisabled() || !frameRect().intersects(damageRect)) | |
| 193 return; | |
| 194 | |
| 195 if (!theme()->paint(this, context, damageRect)) | |
| 196 Widget::paint(context, damageRect); | |
| 197 } | |
| 198 | |
| 199 void Scrollbar::autoscrollTimerFired(Timer<Scrollbar>*) | |
| 200 { | |
| 201 autoscrollPressedPart(theme()->autoscrollTimerDelay()); | |
| 202 } | |
| 203 | |
| 204 static bool thumbUnderMouse(Scrollbar* scrollbar) | |
| 205 { | |
| 206 int thumbPos = scrollbar->theme()->trackPosition(scrollbar) + scrollbar->the
me()->thumbPosition(scrollbar); | |
| 207 int thumbLength = scrollbar->theme()->thumbLength(scrollbar); | |
| 208 return scrollbar->pressedPos() >= thumbPos && scrollbar->pressedPos() < thum
bPos + thumbLength; | |
| 209 } | |
| 210 | |
| 211 void Scrollbar::autoscrollPressedPart(double delay) | |
| 212 { | |
| 213 // Don't do anything for the thumb or if nothing was pressed. | |
| 214 if (m_pressedPart == ThumbPart || m_pressedPart == NoPart) | |
| 215 return; | |
| 216 | |
| 217 // Handle the track. | |
| 218 if ((m_pressedPart == BackTrackPart || m_pressedPart == ForwardTrackPart) &&
thumbUnderMouse(this)) { | |
| 219 theme()->invalidatePart(this, m_pressedPart); | |
| 220 setHoveredPart(ThumbPart); | |
| 221 return; | |
| 222 } | |
| 223 | |
| 224 // Handle the arrows and track. | |
| 225 if (m_scrollableArea && m_scrollableArea->scroll(pressedPartScrollDirection(
), pressedPartScrollGranularity())) | |
| 226 startTimerIfNeeded(delay); | |
| 227 } | |
| 228 | |
| 229 void Scrollbar::startTimerIfNeeded(double delay) | |
| 230 { | |
| 231 // Don't do anything for the thumb. | |
| 232 if (m_pressedPart == ThumbPart) | |
| 233 return; | |
| 234 | |
| 235 // Handle the track. We halt track scrolling once the thumb is level | |
| 236 // with us. | |
| 237 if ((m_pressedPart == BackTrackPart || m_pressedPart == ForwardTrackPart) &&
thumbUnderMouse(this)) { | |
| 238 theme()->invalidatePart(this, m_pressedPart); | |
| 239 setHoveredPart(ThumbPart); | |
| 240 return; | |
| 241 } | |
| 242 | |
| 243 // We can't scroll if we've hit the beginning or end. | |
| 244 ScrollDirection dir = pressedPartScrollDirection(); | |
| 245 if (dir == ScrollUp || dir == ScrollLeft) { | |
| 246 if (m_currentPos == 0) | |
| 247 return; | |
| 248 } else { | |
| 249 if (m_currentPos == maximum()) | |
| 250 return; | |
| 251 } | |
| 252 | |
| 253 m_scrollTimer.startOneShot(delay); | |
| 254 } | |
| 255 | |
| 256 void Scrollbar::stopTimerIfNeeded() | |
| 257 { | |
| 258 if (m_scrollTimer.isActive()) | |
| 259 m_scrollTimer.stop(); | |
| 260 } | |
| 261 | |
| 262 ScrollDirection Scrollbar::pressedPartScrollDirection() | |
| 263 { | |
| 264 if (m_orientation == HorizontalScrollbar) { | |
| 265 if (m_pressedPart == BackButtonStartPart || m_pressedPart == BackButtonE
ndPart || m_pressedPart == BackTrackPart) | |
| 266 return ScrollLeft; | |
| 267 return ScrollRight; | |
| 268 } else { | |
| 269 if (m_pressedPart == BackButtonStartPart || m_pressedPart == BackButtonE
ndPart || m_pressedPart == BackTrackPart) | |
| 270 return ScrollUp; | |
| 271 return ScrollDown; | |
| 272 } | |
| 273 } | |
| 274 | |
| 275 ScrollGranularity Scrollbar::pressedPartScrollGranularity() | |
| 276 { | |
| 277 if (m_pressedPart == BackButtonStartPart || m_pressedPart == BackButtonEndPa
rt || m_pressedPart == ForwardButtonStartPart || m_pressedPart == ForwardButton
EndPart) | |
| 278 return ScrollByLine; | |
| 279 return ScrollByPage; | |
| 280 } | |
| 281 | |
| 282 void Scrollbar::moveThumb(int pos, bool draggingDocument) | |
| 283 { | |
| 284 if (!m_scrollableArea) | |
| 285 return; | |
| 286 | |
| 287 int delta = pos - m_pressedPos; | |
| 288 | |
| 289 if (draggingDocument) { | |
| 290 if (m_draggingDocument) | |
| 291 delta = pos - m_documentDragPos; | |
| 292 m_draggingDocument = true; | |
| 293 FloatPoint currentPosition = m_scrollableArea->scrollAnimator()->current
Position(); | |
| 294 float destinationPosition = (m_orientation == HorizontalScrollbar ? curr
entPosition.x() : currentPosition.y()) + delta; | |
| 295 destinationPosition = m_scrollableArea->clampScrollPosition(m_orientatio
n, destinationPosition); | |
| 296 m_scrollableArea->scrollToOffsetWithoutAnimation(m_orientation, destinat
ionPosition); | |
| 297 m_documentDragPos = pos; | |
| 298 return; | |
| 299 } | |
| 300 | |
| 301 if (m_draggingDocument) { | |
| 302 delta += m_pressedPos - m_documentDragPos; | |
| 303 m_draggingDocument = false; | |
| 304 } | |
| 305 | |
| 306 // Drag the thumb. | |
| 307 int thumbPos = theme()->thumbPosition(this); | |
| 308 int thumbLen = theme()->thumbLength(this); | |
| 309 int trackLen = theme()->trackLength(this); | |
| 310 if (delta > 0) | |
| 311 delta = min(trackLen - thumbLen - thumbPos, delta); | |
| 312 else if (delta < 0) | |
| 313 delta = max(-thumbPos, delta); | |
| 314 | |
| 315 float minPos = m_scrollableArea->minimumScrollPosition(m_orientation); | |
| 316 float maxPos = m_scrollableArea->maximumScrollPosition(m_orientation); | |
| 317 if (delta) { | |
| 318 float newPosition = static_cast<float>(thumbPos + delta) * (maxPos - min
Pos) / (trackLen - thumbLen) + minPos; | |
| 319 m_scrollableArea->scrollToOffsetWithoutAnimation(m_orientation, newPosit
ion); | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 void Scrollbar::setHoveredPart(ScrollbarPart part) | |
| 324 { | |
| 325 if (part == m_hoveredPart) | |
| 326 return; | |
| 327 | |
| 328 if ((m_hoveredPart == NoPart || part == NoPart) && theme()->invalidateOnMous
eEnterExit()) | |
| 329 invalidate(); // Just invalidate the whole scrollbar, since the buttons
at either end change anyway. | |
| 330 else if (m_pressedPart == NoPart) { // When there's a pressed part, we don'
t draw a hovered state, so there's no reason to invalidate. | |
| 331 theme()->invalidatePart(this, part); | |
| 332 theme()->invalidatePart(this, m_hoveredPart); | |
| 333 } | |
| 334 m_hoveredPart = part; | |
| 335 } | |
| 336 | |
| 337 void Scrollbar::setPressedPart(ScrollbarPart part) | |
| 338 { | |
| 339 if (m_pressedPart != NoPart) | |
| 340 theme()->invalidatePart(this, m_pressedPart); | |
| 341 m_pressedPart = part; | |
| 342 if (m_pressedPart != NoPart) | |
| 343 theme()->invalidatePart(this, m_pressedPart); | |
| 344 else if (m_hoveredPart != NoPart) // When we no longer have a pressed part,
we can start drawing a hovered state on the hovered part. | |
| 345 theme()->invalidatePart(this, m_hoveredPart); | |
| 346 } | |
| 347 | |
| 348 bool Scrollbar::gestureEvent(const PlatformGestureEvent& evt) | |
| 349 { | |
| 350 bool handled = false; | |
| 351 switch (evt.type()) { | |
| 352 case PlatformEvent::GestureShowPress: | |
| 353 setPressedPart(theme()->hitTest(this, evt.position())); | |
| 354 m_pressedPos = orientation() == HorizontalScrollbar ? convertFromContain
ingWindow(evt.position()).x() : convertFromContainingWindow(evt.position()).y(); | |
| 355 return true; | |
| 356 case PlatformEvent::GestureTapDownCancel: | |
| 357 case PlatformEvent::GestureScrollBegin: | |
| 358 if (m_pressedPart == ThumbPart) { | |
| 359 m_scrollPos = m_pressedPos; | |
| 360 return true; | |
| 361 } | |
| 362 break; | |
| 363 case PlatformEvent::GestureScrollUpdate: | |
| 364 case PlatformEvent::GestureScrollUpdateWithoutPropagation: | |
| 365 if (m_pressedPart == ThumbPart) { | |
| 366 m_scrollPos += orientation() == HorizontalScrollbar ? evt.deltaX() :
evt.deltaY(); | |
| 367 moveThumb(m_scrollPos, false); | |
| 368 return true; | |
| 369 } | |
| 370 break; | |
| 371 case PlatformEvent::GestureScrollEnd: | |
| 372 m_scrollPos = 0; | |
| 373 break; | |
| 374 case PlatformEvent::GestureTap: | |
| 375 if (m_pressedPart != ThumbPart && m_pressedPart != NoPart) | |
| 376 handled = m_scrollableArea && m_scrollableArea->scroll(pressedPartSc
rollDirection(), pressedPartScrollGranularity()); | |
| 377 break; | |
| 378 default: | |
| 379 break; | |
| 380 } | |
| 381 setPressedPart(NoPart); | |
| 382 m_pressedPos = 0; | |
| 383 return handled; | |
| 384 } | |
| 385 | |
| 386 void Scrollbar::mouseMoved(const PlatformMouseEvent& evt) | |
| 387 { | |
| 388 if (m_pressedPart == ThumbPart) { | |
| 389 if (theme()->shouldSnapBackToDragOrigin(this, evt)) { | |
| 390 if (m_scrollableArea) | |
| 391 m_scrollableArea->scrollToOffsetWithoutAnimation(m_orientation,
m_dragOrigin); | |
| 392 } else { | |
| 393 moveThumb(m_orientation == HorizontalScrollbar ? | |
| 394 convertFromContainingWindow(evt.position()).x() : | |
| 395 convertFromContainingWindow(evt.position()).y(), theme()->
shouldDragDocumentInsteadOfThumb(this, evt)); | |
| 396 } | |
| 397 return; | |
| 398 } | |
| 399 | |
| 400 if (m_pressedPart != NoPart) | |
| 401 m_pressedPos = orientation() == HorizontalScrollbar ? convertFromContain
ingWindow(evt.position()).x() : convertFromContainingWindow(evt.position()).y(); | |
| 402 | |
| 403 ScrollbarPart part = theme()->hitTest(this, evt.position()); | |
| 404 if (part != m_hoveredPart) { | |
| 405 if (m_pressedPart != NoPart) { | |
| 406 if (part == m_pressedPart) { | |
| 407 // The mouse is moving back over the pressed part. We | |
| 408 // need to start up the timer action again. | |
| 409 startTimerIfNeeded(theme()->autoscrollTimerDelay()); | |
| 410 theme()->invalidatePart(this, m_pressedPart); | |
| 411 } else if (m_hoveredPart == m_pressedPart) { | |
| 412 // The mouse is leaving the pressed part. Kill our timer | |
| 413 // if needed. | |
| 414 stopTimerIfNeeded(); | |
| 415 theme()->invalidatePart(this, m_pressedPart); | |
| 416 } | |
| 417 } | |
| 418 | |
| 419 setHoveredPart(part); | |
| 420 } | |
| 421 | |
| 422 return; | |
| 423 } | |
| 424 | |
| 425 void Scrollbar::mouseEntered() | |
| 426 { | |
| 427 if (m_scrollableArea) | |
| 428 m_scrollableArea->mouseEnteredScrollbar(this); | |
| 429 } | |
| 430 | |
| 431 void Scrollbar::mouseExited() | |
| 432 { | |
| 433 if (m_scrollableArea) | |
| 434 m_scrollableArea->mouseExitedScrollbar(this); | |
| 435 setHoveredPart(NoPart); | |
| 436 } | |
| 437 | |
| 438 void Scrollbar::mouseUp(const PlatformMouseEvent& mouseEvent) | |
| 439 { | |
| 440 setPressedPart(NoPart); | |
| 441 m_pressedPos = 0; | |
| 442 m_draggingDocument = false; | |
| 443 stopTimerIfNeeded(); | |
| 444 | |
| 445 if (m_scrollableArea) { | |
| 446 // m_hoveredPart won't be updated until the next mouseMoved or mouseDown
, so we have to hit test | |
| 447 // to really know if the mouse has exited the scrollbar on a mouseUp. | |
| 448 ScrollbarPart part = theme()->hitTest(this, mouseEvent.position()); | |
| 449 if (part == NoPart) | |
| 450 m_scrollableArea->mouseExitedScrollbar(this); | |
| 451 } | |
| 452 } | |
| 453 | |
| 454 void Scrollbar::mouseDown(const PlatformMouseEvent& evt) | |
| 455 { | |
| 456 // Early exit for right click | |
| 457 if (evt.button() == RightButton) | |
| 458 return; | |
| 459 | |
| 460 setPressedPart(theme()->hitTest(this, evt.position())); | |
| 461 int pressedPos = orientation() == HorizontalScrollbar ? convertFromContainin
gWindow(evt.position()).x() : convertFromContainingWindow(evt.position()).y(); | |
| 462 | |
| 463 if ((m_pressedPart == BackTrackPart || m_pressedPart == ForwardTrackPart) &&
theme()->shouldCenterOnThumb(this, evt)) { | |
| 464 setHoveredPart(ThumbPart); | |
| 465 setPressedPart(ThumbPart); | |
| 466 m_dragOrigin = m_currentPos; | |
| 467 int thumbLen = theme()->thumbLength(this); | |
| 468 int desiredPos = pressedPos; | |
| 469 // Set the pressed position to the middle of the thumb so that when we d
o the move, the delta | |
| 470 // will be from the current pixel position of the thumb to the new desir
ed position for the thumb. | |
| 471 m_pressedPos = theme()->trackPosition(this) + theme()->thumbPosition(thi
s) + thumbLen / 2; | |
| 472 moveThumb(desiredPos); | |
| 473 return; | |
| 474 } else if (m_pressedPart == ThumbPart) | |
| 475 m_dragOrigin = m_currentPos; | |
| 476 | |
| 477 m_pressedPos = pressedPos; | |
| 478 | |
| 479 autoscrollPressedPart(theme()->initialAutoscrollTimerDelay()); | |
| 480 } | |
| 481 | |
| 482 void Scrollbar::setFrameRect(const IntRect& rect) | |
| 483 { | |
| 484 // Get our window resizer rect and see if we overlap. Adjust to avoid the ov
erlap | |
| 485 // if necessary. | |
| 486 IntRect adjustedRect(rect); | |
| 487 bool overlapsResizer = false; | |
| 488 ScrollView* view = parentScrollView(); | |
| 489 if (view && !rect.isEmpty() && !view->windowResizerRect().isEmpty()) { | |
| 490 IntRect resizerRect = view->convertFromContainingWindow(view->windowResi
zerRect()); | |
| 491 if (rect.intersects(resizerRect)) { | |
| 492 if (orientation() == HorizontalScrollbar) { | |
| 493 int overlap = rect.maxX() - resizerRect.x(); | |
| 494 if (overlap > 0 && resizerRect.maxX() >= rect.maxX()) { | |
| 495 adjustedRect.setWidth(rect.width() - overlap); | |
| 496 overlapsResizer = true; | |
| 497 } | |
| 498 } else { | |
| 499 int overlap = rect.maxY() - resizerRect.y(); | |
| 500 if (overlap > 0 && resizerRect.maxY() >= rect.maxY()) { | |
| 501 adjustedRect.setHeight(rect.height() - overlap); | |
| 502 overlapsResizer = true; | |
| 503 } | |
| 504 } | |
| 505 } | |
| 506 } | |
| 507 if (overlapsResizer != m_overlapsResizer) { | |
| 508 m_overlapsResizer = overlapsResizer; | |
| 509 if (view) | |
| 510 view->adjustScrollbarsAvoidingResizerCount(m_overlapsResizer ? 1 : -
1); | |
| 511 } | |
| 512 | |
| 513 Widget::setFrameRect(adjustedRect); | |
| 514 } | |
| 515 | |
| 516 void Scrollbar::setParent(Widget* parentView) | |
| 517 { | |
| 518 if (!parentView && m_overlapsResizer && parentScrollView()) | |
| 519 parentScrollView()->adjustScrollbarsAvoidingResizerCount(-1); | |
| 520 Widget::setParent(parentView); | |
| 521 } | |
| 522 | |
| 523 void Scrollbar::setEnabled(bool e) | |
| 524 { | |
| 525 if (m_enabled == e) | |
| 526 return; | |
| 527 m_enabled = e; | |
| 528 theme()->updateEnabledState(this); | |
| 529 invalidate(); | |
| 530 } | |
| 531 | |
| 532 bool Scrollbar::isOverlayScrollbar() const | |
| 533 { | |
| 534 return m_theme->usesOverlayScrollbars(); | |
| 535 } | |
| 536 | |
| 537 bool Scrollbar::shouldParticipateInHitTesting() | |
| 538 { | |
| 539 // Non-overlay scrollbars should always participate in hit testing. | |
| 540 if (!isOverlayScrollbar()) | |
| 541 return true; | |
| 542 return m_scrollableArea->scrollAnimator()->shouldScrollbarParticipateInHitTe
sting(this); | |
| 543 } | |
| 544 | |
| 545 bool Scrollbar::isWindowActive() const | |
| 546 { | |
| 547 return m_scrollableArea && m_scrollableArea->isActive(); | |
| 548 } | |
| 549 | |
| 550 void Scrollbar::invalidateRect(const IntRect& rect) | |
| 551 { | |
| 552 if (suppressInvalidation()) | |
| 553 return; | |
| 554 | |
| 555 if (m_scrollableArea) | |
| 556 m_scrollableArea->invalidateScrollbar(this, rect); | |
| 557 } | |
| 558 | |
| 559 IntRect Scrollbar::convertToContainingView(const IntRect& localRect) const | |
| 560 { | |
| 561 if (m_scrollableArea) | |
| 562 return m_scrollableArea->convertFromScrollbarToContainingView(this, loca
lRect); | |
| 563 | |
| 564 return Widget::convertToContainingView(localRect); | |
| 565 } | |
| 566 | |
| 567 IntRect Scrollbar::convertFromContainingView(const IntRect& parentRect) const | |
| 568 { | |
| 569 if (m_scrollableArea) | |
| 570 return m_scrollableArea->convertFromContainingViewToScrollbar(this, pare
ntRect); | |
| 571 | |
| 572 return Widget::convertFromContainingView(parentRect); | |
| 573 } | |
| 574 | |
| 575 IntPoint Scrollbar::convertToContainingView(const IntPoint& localPoint) const | |
| 576 { | |
| 577 if (m_scrollableArea) | |
| 578 return m_scrollableArea->convertFromScrollbarToContainingView(this, loca
lPoint); | |
| 579 | |
| 580 return Widget::convertToContainingView(localPoint); | |
| 581 } | |
| 582 | |
| 583 IntPoint Scrollbar::convertFromContainingView(const IntPoint& parentPoint) const | |
| 584 { | |
| 585 if (m_scrollableArea) | |
| 586 return m_scrollableArea->convertFromContainingViewToScrollbar(this, pare
ntPoint); | |
| 587 | |
| 588 return Widget::convertFromContainingView(parentPoint); | |
| 589 } | |
| 590 | |
| 591 float Scrollbar::scrollableAreaCurrentPos() const | |
| 592 { | |
| 593 if (!m_scrollableArea) | |
| 594 return 0; | |
| 595 | |
| 596 if (m_orientation == HorizontalScrollbar) | |
| 597 return m_scrollableArea->scrollPosition().x() - m_scrollableArea->minimu
mScrollPosition().x(); | |
| 598 | |
| 599 return m_scrollableArea->scrollPosition().y() - m_scrollableArea->minimumScr
ollPosition().y(); | |
| 600 } | |
| 601 | |
| 602 } // 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