1294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek// Use of this source code is governed by a BSD-style license that can be 3294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek// found in the LICENSE file. 4294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek 5294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek#ifndef PPAPI_CPP_TOUCH_POINT_H_ 6294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek#define PPAPI_CPP_TOUCH_POINT_H_ 7294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek 8294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek#include "ppapi/c/ppb_input_event.h" 9294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek#include "ppapi/cpp/input_event.h" 10294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek#include "ppapi/cpp/point.h" 11294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek 12294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremeneknamespace pp { 13294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek 14294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek/// Wrapper class for PP_TouchPoint. 15294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenekclass TouchPoint { 16e38dd95dddb8f1b38469c8d0e28aa1c660489324Jordy Rose public: 17256ef642f8feef22fd53be7efa868e8e34752eedTed Kremenek TouchPoint() : touch_point_(PP_MakeTouchPoint()) {} 18294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek 19294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek TouchPoint(const PP_TouchPoint& point) : touch_point_(point) {} 20294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek 21294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek /// @return The identifier for this TouchPoint. This corresponds to the order 22294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek /// in which the points were pressed. For example, the first point to be 233070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// pressed has an id of 0, the second has an id of 1, and so on. An id can be 243070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// reused when a touch point is released. For example, if two fingers are 253070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// down, with id 0 and 1, and finger 0 releases, the next finger to be 263070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// pressed can be assigned to id 0. 273070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek uint32_t id() const { return touch_point_.id; } 283070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek 293070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// @return The x-y coordinates of this TouchPoint, in DOM coordinate space. 303070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek FloatPoint position() const { 313070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek return pp::FloatPoint(touch_point_.position); 323070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek } 333070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek 343070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// @return The elliptical radii, in screen pixels, in the x and y direction 353070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// of this TouchPoint. 363070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek FloatPoint radii() const { return pp::FloatPoint(touch_point_.radius); } 373070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek 383070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// @return The angle of rotation of the elliptical model of this TouchPoint 393070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// from the y-axis. 403070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek float rotation_angle() const { return touch_point_.rotation_angle; } 413070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek 423070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// @return The pressure applied to this TouchPoint. This is typically a 433070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// value between 0 and 1, with 0 indicating no pressure and 1 indicating 443070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// some maximum pressure, but scaling differs depending on the hardware and 453070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek /// the value is not guaranteed to stay within that range. 463070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek float pressure() const { return touch_point_.pressure; } 473070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek 483070e13dca5bbefa32acb80ce4a7b217a6220983Ted Kremenek private: 49294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek PP_TouchPoint touch_point_; 50294fd0a62b95f512637910bf85c7efa6c2354b50Ted Kremenek}; 51256ef642f8feef22fd53be7efa868e8e34752eedTed Kremenek 52256ef642f8feef22fd53be7efa868e8e34752eedTed Kremenek} // namespace pp 53256ef642f8feef22fd53be7efa868e8e34752eedTed Kremenek 54256ef642f8feef22fd53be7efa868e8e34752eedTed Kremenek#endif /* PPAPI_CPP_TOUCH_POINT_H_ */ 55256ef642f8feef22fd53be7efa868e8e34752eedTed Kremenek