15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PPAPI_CPP_TOUCH_POINT_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PPAPI_CPP_TOUCH_POINT_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/ppb_input_event.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/cpp/input_event.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/cpp/point.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace pp { 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// Wrapper class for PP_TouchPoint. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class TouchPoint { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TouchPoint() : touch_point_(PP_MakeTouchPoint()) {} 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TouchPoint(const PP_TouchPoint& point) : touch_point_(point) {} 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @return The identifier for this TouchPoint. This corresponds to the order 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// in which the points were pressed. For example, the first point to be 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// pressed has an id of 0, the second has an id of 1, and so on. An id can be 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// reused when a touch point is released. For example, if two fingers are 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// down, with id 0 and 1, and finger 0 releases, the next finger to be 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// pressed can be assigned to id 0. 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t id() const { return touch_point_.id; } 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @return The x-y coordinates of this TouchPoint, in DOM coordinate space. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FloatPoint position() const { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return pp::FloatPoint(touch_point_.position); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @return The elliptical radii, in screen pixels, in the x and y direction 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// of this TouchPoint. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FloatPoint radii() const { return pp::FloatPoint(touch_point_.radius); } 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @return The angle of rotation of the elliptical model of this TouchPoint 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// from the y-axis. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float rotation_angle() const { return touch_point_.rotation_angle; } 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @return The pressure applied to this TouchPoint. This is typically a 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// value between 0 and 1, with 0 indicating no pressure and 1 indicating 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// some maximum pressure, but scaling differs depending on the hardware and 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// the value is not guaranteed to stay within that range. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float pressure() const { return touch_point_.pressure; } 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_TouchPoint touch_point_; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace pp 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PPAPI_CPP_TOUCH_POINT_H_ */ 55