chromium/ui/compositor/overscroll/scroll_input_handler.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/compositor/overscroll/scroll_input_handler.h"

#include "ui/compositor/layer.h"
#include "ui/events/event.h"
#include "ui/events/types/scroll_input_type.h"

namespace ui {

namespace {

// Creates a cc::ScrollState from a ui::ScrollEvent, populating fields general
// to all event phases. Take care not to put deltas on beginning/end updates,
// since InputHandler will DCHECK if they're present.
cc::ScrollState CreateScrollState(const ScrollEvent& scroll, bool is_begin) { … }

}  // namespace

ScrollInputHandler::ScrollInputHandler(
    const base::WeakPtr<cc::InputHandler>& input_handler)
    : … { … }

ScrollInputHandler::~ScrollInputHandler() { … }

bool ScrollInputHandler::OnScrollEvent(const ScrollEvent& event,
                                       Layer* layer_to_scroll) { … }

void ScrollInputHandler::WillShutdown() { … }

void ScrollInputHandler::Animate(base::TimeTicks time) { … }

void ScrollInputHandler::ReconcileElasticOverscrollAndRootScroll() { … }

void ScrollInputHandler::SetPrefersReducedMotion(bool prefers_reduced_motion) { … }

void ScrollInputHandler::UpdateRootLayerStateForSynchronousInputHandler(
    const gfx::PointF& total_scroll_offset,
    const gfx::PointF& max_scroll_offset,
    const gfx::SizeF& scrollable_size,
    float page_scale_factor,
    float min_page_scale_factor,
    float max_page_scale_factor) { … }

void ScrollInputHandler::DeliverInputForBeginFrame(
    const viz::BeginFrameArgs& args) { … }
void ScrollInputHandler::DeliverInputForHighLatencyMode() { … }
void ScrollInputHandler::DeliverInputForDeadline() { … }
void ScrollInputHandler::DidFinishImplFrame() { … }
bool ScrollInputHandler::HasQueuedInput() const { … }
void ScrollInputHandler::SetScrollEventDispatchMode(
    cc::InputHandlerClient::ScrollEventDispatchMode mode) { … }

}  // namespace ui