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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/trees/layer_tree_host_impl.h" | 5 #include "cc/trees/layer_tree_host_impl.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
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3540 | 3540 |
3541 bool did_scroll_top_controls = | 3541 bool did_scroll_top_controls = |
3542 initial_top_controls_offset != | 3542 initial_top_controls_offset != |
3543 browser_controls_offset_manager_->ControlsTopOffset(); | 3543 browser_controls_offset_manager_->ControlsTopOffset(); |
3544 | 3544 |
3545 InputHandlerScrollResult scroll_result; | 3545 InputHandlerScrollResult scroll_result; |
3546 scroll_result.did_scroll = did_scroll_content || did_scroll_top_controls; | 3546 scroll_result.did_scroll = did_scroll_content || did_scroll_top_controls; |
3547 scroll_result.did_overscroll_root = !unused_root_delta.IsZero(); | 3547 scroll_result.did_overscroll_root = !unused_root_delta.IsZero(); |
3548 scroll_result.accumulated_root_overscroll = accumulated_root_overscroll_; | 3548 scroll_result.accumulated_root_overscroll = accumulated_root_overscroll_; |
3549 scroll_result.unused_scroll_delta = unused_root_delta; | 3549 scroll_result.unused_scroll_delta = unused_root_delta; |
3550 | 3550 scroll_result.scroll_boundary_behavior = |
| 3551 active_tree()->scroll_boundary_behavior(); |
3551 if (scroll_result.did_scroll) { | 3552 if (scroll_result.did_scroll) { |
3552 // Scrolling can change the root scroll offset, so inform the synchronous | 3553 // Scrolling can change the root scroll offset, so inform the synchronous |
3553 // input handler. | 3554 // input handler. |
3554 UpdateRootLayerStateForSynchronousInputHandler(); | 3555 UpdateRootLayerStateForSynchronousInputHandler(); |
3555 } | 3556 } |
3556 | 3557 |
3557 // Update compositor worker mutations which may respond to scrolling. | 3558 // Update compositor worker mutations which may respond to scrolling. |
3558 Mutate(CurrentBeginFrameArgs().frame_time); | 3559 Mutate(CurrentBeginFrameArgs().frame_time); |
3559 | 3560 |
3560 return scroll_result; | 3561 return scroll_result; |
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4438 | 4439 |
4439 void LayerTreeHostImpl::ShowScrollbarsForImplScroll(ElementId element_id) { | 4440 void LayerTreeHostImpl::ShowScrollbarsForImplScroll(ElementId element_id) { |
4440 if (!element_id) | 4441 if (!element_id) |
4441 return; | 4442 return; |
4442 if (ScrollbarAnimationController* animation_controller = | 4443 if (ScrollbarAnimationController* animation_controller = |
4443 ScrollbarAnimationControllerForElementId(element_id)) | 4444 ScrollbarAnimationControllerForElementId(element_id)) |
4444 animation_controller->DidScrollUpdate(); | 4445 animation_controller->DidScrollUpdate(); |
4445 } | 4446 } |
4446 | 4447 |
4447 } // namespace cc | 4448 } // namespace cc |
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