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// Copyright 2015 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.
package org.chromium.chromoting;
import org.chromium.chromoting.jni.JniInterface;
/**
* Defines a set of behavior and methods to simulate trackpad behavior when responding to
* local input event data. This class is also responsible for forwarding input event data
* to the remote host for injection there.
*/
public class TrackpadInputStrategy implements InputStrategyInterface {
private final RenderData mRenderData;
private final DesktopViewInterface mViewer;
public TrackpadInputStrategy(DesktopViewInterface viewer, RenderData renderData) {
mViewer = viewer;
mRenderData = renderData;
}
@Override
public void injectRemoteMoveEvent(int x, int y) {
injectRemoteButtonEvent(x, y, TouchInputHandlerInterface.BUTTON_UNDEFINED, false);
}
@Override
public void injectRemoteButtonEvent(int button, boolean pressed) {
int x;
int y;
synchronized (mRenderData) {
x = mRenderData.cursorPosition.x;
y = mRenderData.cursorPosition.y;
}
injectRemoteButtonEvent(x, y, button, pressed);
}
@Override
public void injectRemoteScrollEvent(int deltaX, int deltaY) {
JniInterface.sendMouseWheelEvent(deltaX, deltaY);
}
@Override
public DesktopView.InputFeedbackType getShortPressFeedbackType() {
return DesktopView.InputFeedbackType.NONE;
}
@Override
public DesktopView.InputFeedbackType getLongPressFeedbackType() {
return DesktopView.InputFeedbackType.SMALL_ANIMATION;
}
@Override
public boolean centerCursorInView() {
return true;
}
@Override
public boolean invertCursorMovement() {
return true;
}
private void injectRemoteButtonEvent(int x, int y, int button, boolean pressed) {
boolean cursorMoved = false;
synchronized (mRenderData) {
// Test if the cursor actually moved, which requires repainting the cursor. This
// requires that |mRenderData.cursorPosition| was not assigned to beforehand.
if (x != mRenderData.cursorPosition.x) {
mRenderData.cursorPosition.x = x;
cursorMoved = true;
}
if (y != mRenderData.cursorPosition.y) {
mRenderData.cursorPosition.y = y;
cursorMoved = true;
}
}
if (button == TouchInputHandlerInterface.BUTTON_UNDEFINED && !cursorMoved) {
// No need to inject anything or repaint.
return;
}
JniInterface.sendMouseEvent(x, y, button, pressed);
if (cursorMoved) {
mViewer.transformationChanged();
}
}
}
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