| // Copyright 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cc/scrollbar_animation_controller.h" |
| |
| #include "base/debug/trace_event.h" |
| #include "base/time.h" |
| #include "build/build_config.h" |
| #include "cc/scrollbar_layer_impl.h" |
| |
| #if defined(OS_ANDROID) |
| #include "cc/scrollbar_animation_controller_linear_fade.h" |
| #endif |
| |
| namespace cc { |
| |
| #if defined(OS_ANDROID) |
| scoped_ptr<ScrollbarAnimationController> ScrollbarAnimationController::create(LayerImpl* scrollLayer) |
| { |
| static const double fadeoutDelay = 0.3; |
| static const double fadeoutLength = 0.3; |
| return ScrollbarAnimationControllerLinearFade::create(scrollLayer, fadeoutDelay, fadeoutLength).PassAs<ScrollbarAnimationController>(); |
| } |
| #else |
| scoped_ptr<ScrollbarAnimationController> ScrollbarAnimationController::create(LayerImpl* scrollLayer) |
| { |
| return make_scoped_ptr(new ScrollbarAnimationController(scrollLayer)); |
| } |
| #endif |
| |
| ScrollbarAnimationController::ScrollbarAnimationController(LayerImpl* scrollLayer) |
| : m_horizontalScrollbarLayer(0) |
| , m_verticalScrollbarLayer(0) |
| { |
| ScrollbarAnimationController::updateScrollOffsetAtTime(scrollLayer, 0); |
| } |
| |
| ScrollbarAnimationController::~ScrollbarAnimationController() |
| { |
| } |
| |
| bool ScrollbarAnimationController::animate(double) |
| { |
| return false; |
| } |
| |
| void ScrollbarAnimationController::didPinchGestureBegin() |
| { |
| didPinchGestureBeginAtTime((base::TimeTicks::Now() - base::TimeTicks()).InSecondsF()); |
| } |
| |
| void ScrollbarAnimationController::didPinchGestureUpdate() |
| { |
| didPinchGestureUpdateAtTime((base::TimeTicks::Now() - base::TimeTicks()).InSecondsF()); |
| } |
| |
| void ScrollbarAnimationController::didPinchGestureEnd() |
| { |
| didPinchGestureEndAtTime((base::TimeTicks::Now() - base::TimeTicks()).InSecondsF()); |
| } |
| |
| void ScrollbarAnimationController::updateScrollOffset(LayerImpl* scrollLayer) |
| { |
| updateScrollOffsetAtTime(scrollLayer, (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF()); |
| } |
| |
| gfx::Size ScrollbarAnimationController::getScrollLayerBounds(const LayerImpl* scrollLayer) |
| { |
| if (!scrollLayer->children().size()) |
| return gfx::Size(); |
| // Copy & paste from LayerTreeHostImpl... |
| // FIXME: Hardcoding the first child here is weird. Think of |
| // a cleaner way to get the contentBounds on the Impl side. |
| return scrollLayer->children()[0]->bounds(); |
| } |
| |
| void ScrollbarAnimationController::updateScrollOffsetAtTime(LayerImpl* scrollLayer, double) |
| { |
| m_currentOffset = scrollLayer->scrollOffset() + scrollLayer->scrollDelta(); |
| m_totalSize = getScrollLayerBounds(scrollLayer); |
| m_maximum = scrollLayer->maxScrollOffset(); |
| |
| // Get the m_currentOffset.y() value for a sanity-check on scrolling |
| // benchmark metrics. Specifically, we want to make sure |
| // BasicMouseWheelSmoothScrollGesture has proper scroll curves. |
| TRACE_COUNTER_ID1("gpu", "scroll_offset_y", this, m_currentOffset.y()); |
| |
| |
| if (m_horizontalScrollbarLayer) { |
| m_horizontalScrollbarLayer->setCurrentPos(m_currentOffset.x()); |
| m_horizontalScrollbarLayer->setTotalSize(m_totalSize.width()); |
| m_horizontalScrollbarLayer->setMaximum(m_maximum.x()); |
| } |
| |
| if (m_verticalScrollbarLayer) { |
| m_verticalScrollbarLayer->setCurrentPos(m_currentOffset.y()); |
| m_verticalScrollbarLayer->setTotalSize(m_totalSize.height()); |
| m_verticalScrollbarLayer->setMaximum(m_maximum.y()); |
| } |
| } |
| |
| } // namespace cc |