db497b3200
The methodology used to generate this CL is documented in https://crbug.com/1098010#c95. No-Try: true Bug: 1098010 Change-Id: I6ae92e5d7ccbf73b176588124b2f8b4067f805b3 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3900575 Reviewed-by: Mark Mentovai <mark@chromium.org> Owners-Override: Avi Drissman <avi@chromium.org> Commit-Queue: Avi Drissman <avi@chromium.org> Auto-Submit: Avi Drissman <avi@chromium.org> Cr-Commit-Position: refs/heads/main@{#1047628}
67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
// Copyright 2012 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef PPAPI_CPP_TOUCH_POINT_H_
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#define PPAPI_CPP_TOUCH_POINT_H_
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#include <stdint.h>
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#include "ppapi/c/ppb_input_event.h"
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#include "ppapi/cpp/input_event.h"
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#include "ppapi/cpp/point.h"
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namespace pp {
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/// Wrapper class for PP_TouchPoint.
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class TouchPoint {
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public:
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TouchPoint() : touch_point_(PP_MakeTouchPoint()) {}
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TouchPoint(const PP_TouchPoint& point)
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: touch_point_(point), tilt_(PP_MakeFloatPoint(0, 0)) {}
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TouchPoint(const PP_TouchPoint& point, const PP_FloatPoint& tilt)
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: touch_point_(point), tilt_(tilt) {}
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/// @return The identifier for this TouchPoint. This corresponds to the order
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/// in which the points were pressed. For example, the first point to be
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/// pressed has an id of 0, the second has an id of 1, and so on. An id can be
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/// reused when a touch point is released. For example, if two fingers are
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/// down, with id 0 and 1, and finger 0 releases, the next finger to be
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/// pressed can be assigned to id 0.
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uint32_t id() const { return touch_point_.id; }
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/// @return The x-y coordinates of this TouchPoint, in DOM coordinate space.
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FloatPoint position() const {
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return pp::FloatPoint(touch_point_.position);
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}
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/// @return The elliptical radii, in screen pixels, in the x and y direction
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/// of this TouchPoint.
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FloatPoint radii() const { return pp::FloatPoint(touch_point_.radius); }
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/// @return The angle of rotation of the elliptical model of this TouchPoint
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/// from the y-axis.
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float rotation_angle() const { return touch_point_.rotation_angle; }
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/// @return The pressure applied to this TouchPoint. This is typically a
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/// value between 0 and 1, with 0 indicating no pressure and 1 indicating
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/// some maximum pressure, but scaling differs depending on the hardware and
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/// the value is not guaranteed to stay within that range.
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float pressure() const { return touch_point_.pressure; }
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/// @return The tilt of this touchpoint. This is a float point. Values of x
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/// and y are between 0 and 90, with 0 indicating 0 degrees and 90 indicating
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// 90 degrees.
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PP_FloatPoint tilt() const { return tilt_; }
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private:
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PP_TouchPoint touch_point_;
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PP_FloatPoint tilt_;
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};
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} // namespace pp
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#endif // PPAPI_CPP_TOUCH_POINT_H_
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