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| 1 <?xml version="1.0" encoding="UTF-8"?> |
| 2 <protocol name="stylus_unstable_v2"> |
| 3 |
| 4 <copyright> |
| 5 Copyright 2016 The Chromium Authors. |
| 6 |
| 7 Permission is hereby granted, free of charge, to any person obtaining a |
| 8 copy of this software and associated documentation files (the "Software"), |
| 9 to deal in the Software without restriction, including without limitation |
| 10 the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 11 and/or sell copies of the Software, and to permit persons to whom the |
| 12 Software is furnished to do so, subject to the following conditions: |
| 13 |
| 14 The above copyright notice and this permission notice (including the next |
| 15 paragraph) shall be included in all copies or substantial portions of the |
| 16 Software. |
| 17 |
| 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 21 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 23 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 24 DEALINGS IN THE SOFTWARE. |
| 25 </copyright> |
| 26 |
| 27 <interface name="zcr_stylus_v2" version="1"> |
| 28 <description summary="extends wl_touch with events for on-screen stylus"> |
| 29 Allows a wl_touch to report stylus specific information. The client can |
| 30 interpret the on-screen stylus like any other touch event, and use |
| 31 this protocol to obtain detail information about the type of stylus, |
| 32 as well as the force and tilt of the tool. |
| 33 |
| 34 These events are to be fired by the server within the same frame as other |
| 35 wl_touch events. |
| 36 |
| 37 Warning! The protocol described in this file is experimental and |
| 38 backward incompatible changes may be made. Backward compatible changes |
| 39 may be added together with the corresponding uinterface version bump. |
| 40 Backward incompatible changes are done by bumping the version number in |
| 41 the protocol and uinterface names and resetting the interface version. |
| 42 Once the protocol is to be declared stable, the 'z' prefix and the |
| 43 version number in the protocol and interface names are removed and the |
| 44 interface version number is reset. |
| 45 </description> |
| 46 |
| 47 <enum name="error"> |
| 48 <entry name="touch_stylus_exists" value="0" |
| 49 summary="the touch already has a touch_stylus object associated"/> |
| 50 </enum> |
| 51 |
| 52 <request name="get_touch_stylus"> |
| 53 <description summary="get stylus interface for touch"> |
| 54 Create touch_stylus object. See zcr_touch_stylus_v1 interface for |
| 55 details. If the given wl_touch already has a touch_stylus object |
| 56 associated, the touch_stylus_exists protocol error is raised. |
| 57 </description> |
| 58 <arg name="id" type="new_id" interface="zcr_touch_stylus_v2"/> |
| 59 <arg name="touch" type="object" interface="wl_touch"/> |
| 60 </request> |
| 61 </interface> |
| 62 |
| 63 <interface name="zcr_touch_stylus_v2" version="1"> |
| 64 <description summary="stylus extension for touch"> |
| 65 The zcr_touch_stylus_v1 interface extends the wl_touch interface with |
| 66 events to describe details about a stylus. |
| 67 </description> |
| 68 |
| 69 <request name="destroy" type="destructor"> |
| 70 <description summary="destroy stylus object"/> |
| 71 </request> |
| 72 |
| 73 <enum name="tool_type"> |
| 74 <description summary="tool type of device."/> |
| 75 <entry name="touch" value="1" summary="Touch"/> |
| 76 <entry name="pen" value="2" summary="Pen"/> |
| 77 <entry name="eraser" value="3" summary="Eraser"/> |
| 78 </enum> |
| 79 |
| 80 <event name="tool"> |
| 81 <description summary="sets tool type of touch"> |
| 82 Notification that the user is using a tool type other than touch. There |
| 83 can only be one tool in use at a time. |
| 84 This event is sent in the same frame as the wl_touch.down event. The |
| 85 tool type cannot change while a touch is being reported. |
| 86 </description> |
| 87 <arg name="id" type="uint" summary="touch id"/> |
| 88 <arg name="type" type="uint" enum="tool_type" summary="type of tool in use
"/> |
| 89 </event> |
| 90 |
| 91 <event name="force"> |
| 92 <description summary="force change event"> |
| 93 Notification of a change in physical force on the surface of the screen. |
| 94 The force is calibrated and normalized to the 0 to 1 range. |
| 95 </description> |
| 96 <arg name="time" type="uint" summary="timestamp with millisecond granulari
ty"/> |
| 97 <arg name="id" type="uint" summary="touch id"/> |
| 98 <arg name="force" type="fixed" summary="new value of force"/> |
| 99 </event> |
| 100 |
| 101 <event name="tilt"> |
| 102 <description summary="tilt change event"> |
| 103 Notification of a change in tilt of a stylus. |
| 104 |
| 105 Measured from surface normal as plane angle in degrees, values lie in |
| 106 [-90,90]. A positive x is to the right and a positive y is towards the |
| 107 user. |
| 108 </description> |
| 109 <arg name="time" type="uint" summary="timestamp with millisecond granulari
ty"/> |
| 110 <arg name="id" type="uint" summary="touch id"/> |
| 111 <arg name="tilt_x" type="fixed" summary="tilt in x direction"/> |
| 112 <arg name="tilt_y" type="fixed" summary="tilt in y direction"/> |
| 113 </event> |
| 114 </interface> |
| 115 |
| 116 </protocol> |
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Chromium Code Reviews
Issue 2560493003:
wayland-protocols: Add zcr_stylus_v2 protocol for touch based stylus (Closed)
