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// Copyright 2013 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 "content/browser/renderer_host/input/synthetic_smooth_scroll_gesture.h"
namespace content {
SyntheticSmoothScrollGesture::SyntheticSmoothScrollGesture(
const SyntheticSmoothScrollGestureParams& params)
: params_(params) {
}
SyntheticSmoothScrollGesture::~SyntheticSmoothScrollGesture() {
}
SyntheticGesture::Result SyntheticSmoothScrollGesture::ForwardInputEvents(
const base::TimeTicks& timestamp,
SyntheticGestureTarget* target) {
if (!move_gesture_) {
if (!InitializeMoveGesture(params_.gesture_source_type, target))
return SyntheticGesture::GESTURE_SOURCE_TYPE_NOT_IMPLEMENTED;
}
return move_gesture_->ForwardInputEvents(timestamp, target);
}
SyntheticSmoothMoveGestureParams::InputType
SyntheticSmoothScrollGesture::GetInputSourceType(
SyntheticGestureParams::GestureSourceType gesture_source_type) {
if (gesture_source_type == SyntheticGestureParams::MOUSE_INPUT)
return SyntheticSmoothMoveGestureParams::MOUSE_WHEEL_INPUT;
else
return SyntheticSmoothMoveGestureParams::TOUCH_INPUT;
}
bool SyntheticSmoothScrollGesture::InitializeMoveGesture(
SyntheticGestureParams::GestureSourceType gesture_type,
SyntheticGestureTarget* target) {
if (gesture_type == SyntheticGestureParams::DEFAULT_INPUT)
gesture_type = target->GetDefaultSyntheticGestureSourceType();
if (gesture_type == SyntheticGestureParams::TOUCH_INPUT ||
gesture_type == SyntheticGestureParams::MOUSE_INPUT) {
SyntheticSmoothMoveGestureParams move_params;
move_params.start_point = params_.anchor;
move_params.distances = params_.distances;
move_params.speed_in_pixels_s = params_.speed_in_pixels_s;
move_params.fling_velocity_x = params_.fling_velocity_x;
move_params.fling_velocity_y = params_.fling_velocity_y;
move_params.prevent_fling = params_.prevent_fling;
move_params.input_type = GetInputSourceType(gesture_type);
move_params.add_slop = true;
move_params.precise_scrolling_deltas = params_.precise_scrolling_deltas;
move_params.scroll_by_page = params_.scroll_by_page;
move_gesture_.reset(new SyntheticSmoothMoveGesture(move_params));
return true;
}
return false;
}
} // namespace content
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