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17bef0eddd
This is being picky, but "pinch/spread" is the physical gesture, zoom and rotate is the effect that clients provide in response to that gesture. Let's use pinch only here since spread is more ambiguous in english, as anyone who's ever had butter on their bread would know. Also, everything else is referring to it as pinch anyway, so zoom/rotate here is the odd one out. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
186 lines
8.2 KiB
XML
186 lines
8.2 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="pointer_gestures_unstable_v1">
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<interface name="zwp_pointer_gestures_v1" version="2">
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<description summary="touchpad gestures">
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A global interface to provide semantic touchpad gestures for a given
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pointer.
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Two gestures are currently supported: swipe and pinch.
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All gestures follow a three-stage cycle: begin, update, end and
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are identified by a unique id.
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Warning! The protocol described in this file is experimental and
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backward incompatible changes may be made. Backward compatible changes
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may be added together with the corresponding interface version bump.
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Backward incompatible changes are done by bumping the version number in
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the protocol and interface names and resetting the interface version.
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Once the protocol is to be declared stable, the 'z' prefix and the
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version number in the protocol and interface names are removed and the
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interface version number is reset.
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</description>
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<request name="get_swipe_gesture">
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<description summary="get swipe gesture">
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Create a swipe gesture object. See the
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wl_pointer_gesture_swipe interface for details.
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</description>
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<arg name="id" type="new_id" interface="zwp_pointer_gesture_swipe_v1"/>
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<arg name="pointer" type="object" interface="wl_pointer"/>
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</request>
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<request name="get_pinch_gesture">
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<description summary="get pinch gesture">
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Create a pinch gesture object. See the
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wl_pointer_gesture_pinch interface for details.
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</description>
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<arg name="id" type="new_id" interface="zwp_pointer_gesture_pinch_v1"/>
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<arg name="pointer" type="object" interface="wl_pointer"/>
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</request>
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<!-- Version 2 additions -->
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<request name="release" type="destructor" since="2">
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<description summary="destroy the pointer gesture object">
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Destroy the pointer gesture object. Swipe and pinch objects created via this
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gesture object remain valid.
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</description>
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</request>
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</interface>
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<interface name="zwp_pointer_gesture_swipe_v1" version="2">
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<description summary="a swipe gesture object">
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A swipe gesture object notifies a client about a multi-finger swipe
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gesture detected on an indirect input device such as a touchpad.
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The gesture is usually initiated by multiple fingers moving in the
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same direction but once initiated the direction may change.
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The precise conditions of when such a gesture is detected are
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implementation-dependent.
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A gesture consists of three stages: begin, update (optional) and end.
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There cannot be multiple simultaneous pinch or swipe gestures on a
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same pointer/seat, how compositors prevent these situations is
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implementation-dependent.
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A gesture may be cancelled by the compositor or the hardware.
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Clients should not consider performing permanent or irreversible
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actions until the end of a gesture has been received.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy the pointer swipe gesture object"/>
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</request>
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<event name="begin">
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<description summary="multi-finger swipe begin">
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This event is sent when a multi-finger swipe gesture is detected
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on the device.
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</description>
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<arg name="serial" type="uint"/>
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<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
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<arg name="surface" type="object" interface="wl_surface"/>
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<arg name="fingers" type="uint" summary="number of fingers"/>
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</event>
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<event name="update">
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<description summary="multi-finger swipe motion">
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This event is sent when a multi-finger swipe gesture changes the
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position of the logical center.
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The dx and dy coordinates are relative coordinates of the logical
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center of the gesture compared to the previous event.
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</description>
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<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
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<arg name="dx" type="fixed" summary="delta x coordinate in surface coordinate space"/>
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<arg name="dy" type="fixed" summary="delta y coordinate in surface coordinate space"/>
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</event>
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<event name="end">
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<description summary="multi-finger swipe end">
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This event is sent when a multi-finger swipe gesture ceases to
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be valid. This may happen when one or more fingers are lifted or
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the gesture is cancelled.
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When a gesture is cancelled, the client should undo state changes
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caused by this gesture. What causes a gesture to be cancelled is
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implementation-dependent.
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</description>
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<arg name="serial" type="uint"/>
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<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
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<arg name="cancelled" type="int" summary="1 if the gesture was cancelled, 0 otherwise"/>
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</event>
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</interface>
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<interface name="zwp_pointer_gesture_pinch_v1" version="2">
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<description summary="a pinch gesture object">
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A pinch gesture object notifies a client about a multi-finger pinch
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gesture detected on an indirect input device such as a touchpad.
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The gesture is usually initiated by multiple fingers moving towards
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each other or away from each other, or by two or more fingers rotating
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around a logical center of gravity. The precise conditions of when
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such a gesture is detected are implementation-dependent.
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A gesture consists of three stages: begin, update (optional) and end.
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There cannot be multiple simultaneous pinch or swipe gestures on a
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same pointer/seat, how compositors prevent these situations is
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implementation-dependent.
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A gesture may be cancelled by the compositor or the hardware.
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Clients should not consider performing permanent or irreversible
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actions until the end of a gesture has been received.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy the pinch gesture object"/>
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</request>
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<event name="begin">
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<description summary="multi-finger pinch begin">
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This event is sent when a multi-finger pinch gesture is detected
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on the device.
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</description>
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<arg name="serial" type="uint"/>
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<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
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<arg name="surface" type="object" interface="wl_surface"/>
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<arg name="fingers" type="uint" summary="number of fingers"/>
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</event>
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<event name="update">
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<description summary="multi-finger pinch motion">
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This event is sent when a multi-finger pinch gesture changes the
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position of the logical center, the rotation or the relative scale.
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The dx and dy coordinates are relative coordinates in the
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surface coordinate space of the logical center of the gesture.
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The scale factor is an absolute scale compared to the
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pointer_gesture_pinch.begin event, e.g. a scale of 2 means the fingers
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are now twice as far apart as on pointer_gesture_pinch.begin.
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The rotation is the relative angle in degrees clockwise compared to the previous
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pointer_gesture_pinch.begin or pointer_gesture_pinch.update event.
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</description>
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<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
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<arg name="dx" type="fixed" summary="delta x coordinate in surface coordinate space"/>
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<arg name="dy" type="fixed" summary="delta y coordinate in surface coordinate space"/>
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<arg name="scale" type="fixed" summary="scale relative to the initial finger position"/>
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<arg name="rotation" type="fixed" summary="angle in degrees cw relative to the previous event"/>
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</event>
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<event name="end">
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<description summary="multi-finger pinch end">
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This event is sent when a multi-finger pinch gesture ceases to
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be valid. This may happen when one or more fingers are lifted or
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the gesture is cancelled.
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When a gesture is cancelled, the client should undo state changes
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caused by this gesture. What causes a gesture to be cancelled is
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implementation-dependent.
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</description>
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<arg name="serial" type="uint"/>
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<arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
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<arg name="cancelled" type="int" summary="1 if the gesture was cancelled, 0 otherwise"/>
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</event>
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</interface>
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</protocol>
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