emersion
6 years ago
parent
84c904752f
commit
99d879c887
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/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_TYPES_WLR_DATA_CONTROL_V1_H
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#define WLR_TYPES_WLR_DATA_CONTROL_V1_H
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#include <wayland-server.h>
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#include <wlr/types/wlr_seat.h>
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struct wlr_data_control_manager_v1 {
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struct wl_global *global;
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struct wl_list resources; // wl_resource_get_link
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struct wl_list controls; // wlr_data_control_v1::link
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struct {
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struct wl_signal destroy;
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struct wl_signal new_control; // wlr_data_control_v1
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} events;
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struct wl_listener display_destroy;
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};
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struct wlr_data_control_v1 {
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struct wl_resource *resource;
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struct wlr_data_control_manager_v1 *manager;
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struct wl_list link; // wlr_data_control_manager_v1::controls
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struct wlr_seat *seat;
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struct wl_resource *selection_offer_resource; // current selection offer
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struct wl_listener seat_destroy;
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struct wl_listener seat_selection;
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};
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struct wlr_data_control_manager_v1 *wlr_data_control_manager_v1_create(
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struct wl_display *display);
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void wlr_data_control_manager_v1_destroy(
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struct wlr_data_control_manager_v1 *manager);
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void wlr_data_control_v1_destroy(struct wlr_data_control_v1 *control);
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#endif
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@ -0,0 +1,220 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="wlr_data_control_unstable_v1">
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<copyright>
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Copyright © 2018 Simon Ser
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that copyright notice and this permission
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notice appear in supporting documentation, and that the name of
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the copyright holders not be used in advertising or publicity
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pertaining to distribution of the software without specific,
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written prior permission. The copyright holders make no
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representations about the suitability of this software for any
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purpose. It is provided "as is" without express or implied
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warranty.
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THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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THIS SOFTWARE.
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</copyright>
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<description summary="control data devices">
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This protocol allows a privileged client to control data devices. In
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particular, the client will be able to manage the current selection and take
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the role of a clipboard manager.
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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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<interface name="zwlr_data_control_manager_v1" version="1">
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<description summary="manager to create per-seat data controls">
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This interface is a manager that allows creating per-seat data controls.
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</description>
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<request name="create_data_source">
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<description summary="create a new data source">
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Create a new data source.
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</description>
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<arg name="id" type="new_id" interface="zwlr_data_control_source_v1"
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summary="data source to create"/>
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</request>
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<request name="get_data_control">
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<description summary="get a data control for a seat">
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Create a data control that can be used to manage a seat's data device.
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</description>
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<arg name="id" type="new_id" interface="zwlr_data_control_v1"/>
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<arg name="seat" type="object" interface="wl_seat"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy the manager">
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All objects created by the manager will still remain valid, until their
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appropriate destroy request has been called.
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</description>
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</request>
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</interface>
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<interface name="zwlr_data_control_v1" version="1">
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<description summary="manage a data device for a seat">
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This interface allows a client to manage a data device associated with a
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seat.
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When the seat is destroyed, this object becomes inert.
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</description>
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<request name="set_selection">
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<description summary="copy data to the selection">
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All objects created by the manager will still remain valid, until their
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appropriate destroy request has been called.
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</description>
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<arg name="source" type="object" interface="zwlr_data_control_source_v1"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy this control">
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Destroys the data control object.
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</description>
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</request>
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<event name="data_offer">
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<description summary="introduce a new wlr_data_control_offer">
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The data_offer event introduces a new wlr_data_control_offer object,
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which will subsequently be used in the wlr_data_control.selection event.
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Immediately following the wlr_data_control.data_offer event, the new
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data_offer object will send out wlr_data_control_offer.offer events to
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describe the MIME types it offers.
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This event replaces the previous data offer, which should be destroyed
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by the client.
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</description>
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<arg name="id" type="new_id" interface="zwlr_data_control_offer_v1"/>
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</event>
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<event name="selection">
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<description summary="introduce a new wlr_data_control_offer">
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The selection event is sent out to notify the client of a new
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wlr_data_control_offer for the selection for this device. The
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wlr_data_control.data_offer and the wlr_data_control_offer.offer events
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are sent out immediately before this event to introduce the data offer
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object. The selection event is sent to a client when a new selection is
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set. The wlr_data_control_offer is valid until a new
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wlr_data_control_offer or NULL is received. The client must destroy the
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previous selection wlr_data_control_offer, if any, upon receiving this
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event.
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</description>
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<arg name="id" type="object" interface="zwlr_data_control_offer_v1"/>
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</event>
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<event name="finished">
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<description summary="this data control is no longer valid">
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This data control object is no longer valid and should be destroyed by
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the client.
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</description>
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</event>
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</interface>
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<interface name="zwlr_data_control_source_v1" version="1">
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<description summary="offer to transfer data">
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The wlr_data_control_source object is the source side of a
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wlr_data_control_offer. It is created by the source client in a data
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transfer and provides a way to describe the offered data and a way to
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respond to requests to transfer the data.
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</description>
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<enum name="error">
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<entry name="invalid_offer" value="1"
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summary="offer sent after wlr_data_control.set_selection"/>
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</enum>
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<request name="offer">
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<description summary="add an offered MIME type">
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This request adds a MIME type to the set of MIME types advertised to
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targets. Can be called several times to offer multiple types.
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Calling this after wlr_data_control.set_selection is a protocol error.
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</description>
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<arg name="mime_type" type="string"
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summary="MIME type offered by the data source"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy this source">
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Destroys the data source object.
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</description>
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</request>
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<event name="send">
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<description summary="send the data">
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Request for data from the client. Send the data as the specified MIME
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type over the passed file descriptor, then close it.
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</description>
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<arg name="mime_type" type="string" summary="MIME type for the data"/>
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<arg name="fd" type="fd" summary="file descriptor for the data"/>
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</event>
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<event name="cancelled">
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<description summary="selection was cancelled">
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This data source is no longer valid. The data source has been replaced
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by another data source.
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The client should clean up and destroy this data source.
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</description>
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</event>
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</interface>
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<interface name="zwlr_data_control_offer_v1" version="1">
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<description summary="offer to transfer data">
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A wlr_data_control_offer represents a piece of data offered for transfer
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by another client (the source client). The offer describes the different
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MIME types that the data can be converted to and provides the mechanism
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for transferring the data directly from the source client.
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</description>
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<request name="receive">
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<description summary="request that the data is transferred">
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To transfer the offered data, the client issues this request and
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indicates the MIME type it wants to receive. The transfer happens
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through the passed file descriptor (typically created with the pipe
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system call). The source client writes the data in the MIME type
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representation requested and then closes the file descriptor.
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The receiving client reads from the read end of the pipe until EOF and
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then closes its end, at which point the transfer is complete.
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This request may happen multiple times for different MIME types.
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</description>
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<arg name="mime_type" type="string"
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summary="MIME type desired by receiver"/>
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<arg name="fd" type="fd" summary="file descriptor for data transfer"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy this offer">
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Destroys the data offer object.
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</description>
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</request>
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<event name="offer">
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<description summary="advertise offered MIME type">
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Sent immediately after creating the wlr_data_control_offer object.
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One event per offered MIME type.
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</description>
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<arg name="mime_type" type="string" summary="offered MIME type"/>
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</event>
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</interface>
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</protocol>
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@ -0,0 +1,413 @@
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#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <wlr/types/wlr_data_control_v1.h>
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#include <wlr/types/wlr_data_device.h>
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#include "util/signal.h"
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#include "wlr-data-control-unstable-v1-protocol.h"
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#define DATA_CONTROL_MANAGER_VERSION 1
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struct client_data_source {
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struct wlr_data_source source;
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struct wl_resource *resource;
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bool finalized;
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};
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static const struct wlr_data_source_impl client_source_impl;
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static struct client_data_source *
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client_data_source_from_source(struct wlr_data_source *wlr_source) {
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assert(wlr_source->impl == &client_source_impl);
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return (struct client_data_source *)wlr_source;
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}
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static void client_source_send(struct wlr_data_source *wlr_source,
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const char *mime_type, int fd) {
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struct client_data_source *source =
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client_data_source_from_source(wlr_source);
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zwlr_data_control_source_v1_send_send(source->resource, mime_type, fd);
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close(fd);
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}
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static void client_source_cancel(struct wlr_data_source *wlr_source) {
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struct client_data_source *source =
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client_data_source_from_source(wlr_source);
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zwlr_data_control_source_v1_send_cancelled(source->resource);
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// Make the resource inert
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wl_resource_set_user_data(source->resource, NULL);
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free(source);
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}
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static const struct wlr_data_source_impl client_source_impl = {
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.send = client_source_send,
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.cancel = client_source_cancel,
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};
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static const struct zwlr_data_control_source_v1_interface source_impl;
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static struct client_data_source *source_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_source_v1_interface, &source_impl));
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return wl_resource_get_user_data(resource);
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}
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static void source_handle_offer(struct wl_client *client,
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struct wl_resource *resource, const char *mime_type) {
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struct client_data_source *source = source_from_resource(resource);
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if (source == NULL) {
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return;
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}
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if (source->finalized) {
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wl_resource_post_error(resource,
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ZWLR_DATA_CONTROL_SOURCE_V1_ERROR_INVALID_OFFER,
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"cannot mutate offer after set_selection");
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return;
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}
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char *dup_mime_type = strdup(mime_type);
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if (dup_mime_type == NULL) {
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wl_resource_post_no_memory(resource);
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return;
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}
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char **p = wl_array_add(&source->source.mime_types, sizeof(char *));
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if (p == NULL) {
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free(dup_mime_type);
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wl_resource_post_no_memory(resource);
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return;
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}
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*p = dup_mime_type;
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}
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static void source_handle_destroy(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static const struct zwlr_data_control_source_v1_interface source_impl = {
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.offer = source_handle_offer,
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.destroy = source_handle_destroy,
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};
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static void source_handle_resource_destroy(struct wl_resource *resource) {
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struct client_data_source *source = source_from_resource(resource);
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if (source == NULL) {
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return;
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}
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wlr_data_source_cancel(&source->source);
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}
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static const struct zwlr_data_control_offer_v1_interface offer_impl;
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static struct wlr_data_control_v1 *control_from_offer_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_offer_v1_interface, &offer_impl));
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return wl_resource_get_user_data(resource);
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}
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static void offer_handle_receive(struct wl_client *client,
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struct wl_resource *resource, const char *mime_type, int fd) {
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struct wlr_data_control_v1 *control = control_from_offer_resource(resource);
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if (control == NULL || control->seat->selection_source == NULL) {
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close(fd);
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return;
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}
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wlr_data_source_send(control->seat->selection_source, mime_type, fd);
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}
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static void offer_handle_destroy(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static const struct zwlr_data_control_offer_v1_interface offer_impl = {
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.receive = offer_handle_receive,
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.destroy = offer_handle_destroy,
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};
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static void offer_handle_resource_destroy(struct wl_resource *resource) {
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struct wlr_data_control_v1 *control = control_from_offer_resource(resource);
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if (control != NULL) {
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control->selection_offer_resource = NULL;
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}
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}
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static struct wl_resource *create_offer(struct wlr_data_control_v1 *control,
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struct wlr_data_source *source) {
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struct wl_client *client = wl_resource_get_client(control->resource);
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uint32_t version = wl_resource_get_version(control->resource);
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struct wl_resource *resource = wl_resource_create(client,
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&zwlr_data_control_offer_v1_interface, version, 0);
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if (resource == NULL) {
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return NULL;
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}
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wl_resource_set_implementation(resource, &offer_impl, control,
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offer_handle_resource_destroy);
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zwlr_data_control_v1_send_data_offer(control->resource, resource);
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char **p;
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wl_array_for_each(p, &source->mime_types) {
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zwlr_data_control_offer_v1_send_offer(resource, *p);
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}
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return resource;
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}
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static const struct zwlr_data_control_v1_interface control_impl;
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static struct wlr_data_control_v1 *control_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwlr_data_control_v1_interface, &control_impl));
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return wl_resource_get_user_data(resource);
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}
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static void control_handle_set_selection(struct wl_client *client,
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struct wl_resource *control_resource,
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struct wl_resource *source_resource) {
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struct wlr_data_control_v1 *control =
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control_from_resource(control_resource);
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struct client_data_source *source = source_from_resource(source_resource);
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if (control == NULL || source == NULL) {
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return;
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}
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struct wl_display *display = wl_client_get_display(client);
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wlr_seat_set_selection(control->seat, &source->source,
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wl_display_next_serial(display));
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}
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static void control_handle_destroy(struct wl_client *client,
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struct wl_resource *control_resource) {
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wl_resource_destroy(control_resource);
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}
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static const struct zwlr_data_control_v1_interface control_impl = {
|
||||
.set_selection = control_handle_set_selection,
|
||||
.destroy = control_handle_destroy,
|
||||
};
|
||||
|
||||
static void control_send_selection(struct wlr_data_control_v1 *control) {
|
||||
struct wlr_data_source *source = control->seat->selection_source;
|
||||
|
||||
if (control->selection_offer_resource != NULL) {
|
||||
// Make the offer inert
|
||||
wl_resource_set_user_data(control->selection_offer_resource, NULL);
|
||||
}
|
||||
|
||||
control->selection_offer_resource = NULL;
|
||||
if (source != NULL) {
|
||||
control->selection_offer_resource = create_offer(control, source);
|
||||
if (control->selection_offer_resource == NULL) {
|
||||
wl_resource_post_no_memory(control->resource);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
zwlr_data_control_v1_send_selection(control->resource,
|
||||
control->selection_offer_resource);
|
||||
}
|
||||
|
||||
static void control_handle_resource_destroy(struct wl_resource *resource) {
|
||||
struct wlr_data_control_v1 *control = control_from_resource(resource);
|
||||
wlr_data_control_v1_destroy(control);
|
||||
}
|
||||
|
||||
static void control_handle_seat_destroy(struct wl_listener *listener,
|
||||
void *data) {
|
||||
struct wlr_data_control_v1 *control =
|
||||
wl_container_of(listener, control, seat_destroy);
|
||||
wlr_data_control_v1_destroy(control);
|
||||
}
|
||||
|
||||
static void control_handle_seat_selection(struct wl_listener *listener,
|
||||
void *data) {
|
||||
struct wlr_data_control_v1 *control =
|
||||
wl_container_of(listener, control, seat_selection);
|
||||
control_send_selection(control);
|
||||
}
|
||||
|
||||
void wlr_data_control_v1_destroy(struct wlr_data_control_v1 *control) {
|
||||
if (control == NULL) {
|
||||
return;
|
||||
}
|
||||
zwlr_data_control_v1_send_finished(control->resource);
|
||||
// Make the resource inert
|
||||
wl_resource_set_user_data(control->resource, NULL);
|
||||
wl_list_remove(&control->seat_destroy.link);
|
||||
wl_list_remove(&control->link);
|
||||
free(control);
|
||||
}
|
||||
|
||||
|
||||
static const struct zwlr_data_control_manager_v1_interface manager_impl;
|
||||
|
||||
static struct wlr_data_control_manager_v1 *manager_from_resource(
|
||||
struct wl_resource *resource) {
|
||||
assert(wl_resource_instance_of(resource,
|
||||
&zwlr_data_control_manager_v1_interface, &manager_impl));
|
||||
return wl_resource_get_user_data(resource);
|
||||
}
|
||||
|
||||
static void manager_handle_create_data_source(struct wl_client *client,
|
||||
struct wl_resource *manager_resource, uint32_t id) {
|
||||
struct client_data_source *source =
|
||||
calloc(1, sizeof(struct client_data_source));
|
||||
if (source == NULL) {
|
||||
wl_resource_post_no_memory(manager_resource);
|
||||
return;
|
||||
}
|
||||
wlr_data_source_init(&source->source, &client_source_impl);
|
||||
|
||||
uint32_t version = wl_resource_get_version(manager_resource);
|
||||
source->resource = wl_resource_create(client,
|
||||
&zwlr_data_control_source_v1_interface, version, id);
|
||||
if (source->resource == NULL) {
|
||||
wl_resource_post_no_memory(manager_resource);
|
||||
free(source);
|
||||
return;
|
||||
}
|
||||
wl_resource_set_implementation(source->resource, &source_impl, source,
|
||||
source_handle_resource_destroy);
|
||||
}
|
||||
|
||||
static void manager_handle_get_data_control(struct wl_client *client,
|
||||
struct wl_resource *manager_resource, uint32_t id,
|
||||
struct wl_resource *seat_resource) {
|
||||
struct wlr_data_control_manager_v1 *manager =
|
||||
manager_from_resource(manager_resource);
|
||||
struct wlr_seat_client *seat_client =
|
||||
wlr_seat_client_from_resource(seat_resource);
|
||||
|
||||
struct wlr_data_control_v1 *control =
|
||||
calloc(1, sizeof(struct wlr_data_control_v1));
|
||||
if (control == NULL) {
|
||||
wl_resource_post_no_memory(manager_resource);
|
||||
return;
|
||||
}
|
||||
control->manager = manager;
|
||||
control->seat = seat_client->seat;
|
||||
|
||||
uint32_t version = wl_resource_get_version(manager_resource);
|
||||
control->resource = wl_resource_create(client,
|
||||
&zwlr_data_control_v1_interface, version, id);
|
||||
if (control->resource == NULL) {
|
||||
wl_resource_post_no_memory(manager_resource);
|
||||
free(control);
|
||||
return;
|
||||
}
|
||||
wl_resource_set_implementation(control->resource, &control_impl, control,
|
||||
control_handle_resource_destroy);
|
||||
struct wl_resource *resource = control->resource;
|
||||
|
||||
control->seat_destroy.notify = control_handle_seat_destroy;
|
||||
wl_signal_add(&control->seat->events.destroy, &control->seat_destroy);
|
||||
|
||||
control->seat_selection.notify = control_handle_seat_selection;
|
||||
wl_signal_add(&control->seat->events.destroy, &control->seat_selection);
|
||||
|
||||
wl_list_insert(&manager->controls, &control->link);
|
||||
wlr_signal_emit_safe(&manager->events.new_control, control);
|
||||
|
||||
// At this point maybe the compositor decided to destroy the control. If
|
||||
// it's the case then the resource will be inert.
|
||||
control = control_from_resource(resource);
|
||||
if (control != NULL) {
|
||||
control_send_selection(control);
|
||||
}
|
||||
}
|
||||
|
||||
static void manager_handle_destroy(struct wl_client *client,
|
||||
struct wl_resource *manager_resource) {
|
||||
wl_resource_destroy(manager_resource);
|
||||
}
|
||||
|
||||
static const struct zwlr_data_control_manager_v1_interface manager_impl = {
|
||||
.create_data_source = manager_handle_create_data_source,
|
||||
.get_data_control = manager_handle_get_data_control,
|
||||
.destroy = manager_handle_destroy,
|
||||
};
|
||||
|
||||
static void manager_handle_resource_destroy(struct wl_resource *resource) {
|
||||
wl_list_remove(wl_resource_get_link(resource));
|
||||
}
|
||||
|
||||
static void manager_bind(struct wl_client *client, void *data, uint32_t version,
|
||||
uint32_t id) {
|
||||
struct wlr_data_control_manager_v1 *manager = data;
|
||||
|
||||
struct wl_resource *resource = wl_resource_create(client,
|
||||
&zwlr_data_control_manager_v1_interface, version, id);
|
||||
if (resource == NULL) {
|
||||
wl_client_post_no_memory(client);
|
||||
return;
|
||||
}
|
||||
wl_resource_set_implementation(resource, &manager_impl, manager,
|
||||
manager_handle_resource_destroy);
|
||||
|
||||
wl_list_insert(&manager->resources, wl_resource_get_link(resource));
|
||||
}
|
||||
|
||||
static void handle_display_destroy(struct wl_listener *listener, void *data) {
|
||||
struct wlr_data_control_manager_v1 *manager =
|
||||
wl_container_of(listener, manager, display_destroy);
|
||||
wlr_data_control_manager_v1_destroy(manager);
|
||||
}
|
||||
|
||||
struct wlr_data_control_manager_v1 *wlr_data_control_manager_v1_create(
|
||||
struct wl_display *display) {
|
||||
struct wlr_data_control_manager_v1 *manager =
|
||||
calloc(1, sizeof(struct wlr_data_control_manager_v1));
|
||||
if (manager == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
wl_list_init(&manager->resources);
|
||||
wl_list_init(&manager->controls);
|
||||
wl_signal_init(&manager->events.destroy);
|
||||
wl_signal_init(&manager->events.new_control);
|
||||
|
||||
manager->global = wl_global_create(display,
|
||||
&zwlr_data_control_manager_v1_interface, DATA_CONTROL_MANAGER_VERSION,
|
||||
manager, manager_bind);
|
||||
if (manager->global == NULL) {
|
||||
free(manager);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
manager->display_destroy.notify = handle_display_destroy;
|
||||
wl_display_add_destroy_listener(display, &manager->display_destroy);
|
||||
|
||||
return manager;
|
||||
}
|
||||
|
||||
void wlr_data_control_manager_v1_destroy(
|
||||
struct wlr_data_control_manager_v1 *manager) {
|
||||
if (manager == NULL) {
|
||||
return;
|
||||
}
|
||||
|
||||
wlr_signal_emit_safe(&manager->events.destroy, manager);
|
||||
|
||||
struct wlr_data_control_v1 *control, *control_tmp;
|
||||
wl_list_for_each_safe(control, control_tmp, &manager->controls, link) {
|
||||
wl_resource_destroy(control->resource);
|
||||
}
|
||||
|
||||
struct wl_resource *resource, *resource_tmp;
|
||||
wl_resource_for_each_safe(resource, resource_tmp, &manager->resources) {
|
||||
wl_resource_destroy(resource);
|
||||
}
|
||||
|
||||
wl_list_remove(&manager->display_destroy.link);
|
||||
free(manager);
|
||||
}
|
||||
Loading…
Reference in new issue