Add wlr_primary_selection_device_manager and wlr_primary_selection_source
This commit is contained in:
emersion
parent
0a370c5298
commit
0a171d3ace
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@ -11,3 +11,4 @@ trim_trailing_whitespace = true
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[*.xml]
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indent_style = space
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indent_size = 2
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tab_width = 8
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@ -0,0 +1,31 @@
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#ifndef WLR_TYPES_WLR_PRIMARY_SELECTION_H
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#define WLR_TYPES_WLR_PRIMARY_SELECTION_H
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#include <wayland-server.h>
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struct wlr_primary_selection_device_manager {
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struct wl_global *global;
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struct wl_listener display_destroy;
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void *data;
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};
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struct wlr_primary_selection_source {
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struct wl_resource *resource;
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struct wl_array mime_types;
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struct {
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struct wl_signal destroy;
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} events;
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void *data;
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};
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struct wlr_primary_selection_device_manager *
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wlr_primary_selection_device_manager_create(struct wl_display *display);
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void wlr_primary_selection_device_manager_destroy(
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struct wlr_primary_selection_device_manager *manager);
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#endif
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@ -0,0 +1,225 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="gtk_primary_selection">
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<copyright>
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Copyright © 2015, 2016 Red Hat
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice (including the next
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paragraph) shall be included in all copies or substantial portions of the
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Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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</copyright>
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<description summary="Primary selection protocol">
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This protocol provides the ability to have a primary selection device to
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match that of the X server. This primary selection is a shortcut to the
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common clipboard selection, where text just needs to be selected in order
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to allow copying it elsewhere. The de facto way to perform this action
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is the middle mouse button, although it is not limited to this one.
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Clients wishing to honor primary selection should create a primary
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selection source and set it as the selection through
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wp_primary_selection_device.set_selection whenever the text selection
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changes. In order to minimize calls in pointer-driven text selection,
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it should happen only once after the operation finished. Similarly,
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a NULL source should be set when text is unselected.
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wp_primary_selection_offer objects are first announced through the
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wp_primary_selection_device.data_offer event. Immediately after this event,
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the primary data offer will emit wp_primary_selection_offer.offer events
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to let know of the mime types being offered.
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When the primary selection changes, the client with the keyboard focus
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will receive wp_primary_selection_device.selection events. Only the client
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with the keyboard focus will receive such events with a non-NULL
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wp_primary_selection_offer. Across keyboard focus changes, previously
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focused clients will receive wp_primary_selection_device.events with a
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NULL wp_primary_selection_offer.
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In order to request the primary selection data, the client must pass
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a recent serial pertaining to the press event that is triggering the
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operation, if the compositor deems the serial valid and recent, the
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wp_primary_selection_source.send event will happen in the other end
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to let the transfer begin. The client owning the primary selection
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should write the requested data, and close the file descriptor
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immediately.
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If the primary selection owner client disappeared during the transfer,
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the client reading the data will receive a
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wp_primary_selection_device.selection event with a NULL
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wp_primary_selection_offer, the client should take this as a hint
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to finish the reads related to the no longer existing offer.
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The primary selection owner should be checking for errors during
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writes, merely cancelling the ongoing transfer if any happened.
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</description>
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<interface name="gtk_primary_selection_device_manager" version="1">
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<description summary="X primary selection emulation">
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The primary selection device manager is a singleton global object that
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provides access to the primary selection. It allows to create
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wp_primary_selection_source objects, as well as retrieving the per-seat
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wp_primary_selection_device objects.
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</description>
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<request name="create_source">
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<description summary="create a new primary selection source">
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Create a new primary selection source.
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</description>
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<arg name="id" type="new_id" interface="gtk_primary_selection_source"/>
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</request>
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<request name="get_device">
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<description summary="create a new primary selection device">
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Create a new data device for a given seat.
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</description>
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<arg name="id" type="new_id" interface="gtk_primary_selection_device"/>
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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 primary selection device manager">
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Destroy the primary selection device manager.
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</description>
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</request>
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</interface>
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<interface name="gtk_primary_selection_device" version="1">
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<request name="set_selection">
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<description summary="set the primary selection">
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Replaces the current selection. The previous owner of the primary selection
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will receive a wp_primary_selection_source.cancelled event.
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To unset the selection, set the source to NULL.
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</description>
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<arg name="source" type="object" interface="gtk_primary_selection_source" allow-null="true"/>
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<arg name="serial" type="uint" summary="serial of the event that triggered this request"/>
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</request>
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<event name="data_offer">
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<description summary="introduce a new wp_primary_selection_offer">
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Introduces a new wp_primary_selection_offer object that may be used
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to receive the current primary selection. Immediately following this
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event, the new wp_primary_selection_offer object will send
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wp_primary_selection_offer.offer events to describe the offered mime
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types.
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</description>
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<arg name="offer" type="new_id" interface="gtk_primary_selection_offer"/>
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</event>
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<event name="selection">
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<description summary="advertise a new primary selection">
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The wp_primary_selection_device.selection event is sent to notify the
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client of a new primary selection. This event is sent after the
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wp_primary_selection.data_offer event introducing this object, and after
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the offer has announced its mimetypes through
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wp_primary_selection_offer.offer.
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The data_offer is valid until a new offer or NULL is received
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or until the client loses keyboard focus. The client must destroy the
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previous selection data_offer, if any, upon receiving this event.
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</description>
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<arg name="id" type="object" interface="gtk_primary_selection_offer" allow-null="true"/>
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</event>
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<request name="destroy" type="destructor">
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<description summary="destroy the primary selection device">
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Destroy the primary selection device.
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</description>
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</request>
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</interface>
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<interface name="gtk_primary_selection_offer" version="1">
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<description summary="offer to transfer primary selection contents">
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A wp_primary_selection_offer represents an offer to transfer the contents
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of the primary selection clipboard to the client. Similar to
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wl_data_offer, the offer also describes the mime types that the source
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will transferthat the
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data can be converted to and provides the mechanisms for transferring the
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data directly to the 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 contents of the primary selection clipboard, the client
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issues this request and indicates the mime type that it wants to
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receive. The transfer happens through the passed file descriptor
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(typically created with the pipe system call). The source client writes
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the data in the mime type representation requested and then closes the
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file descriptor.
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The receiving client reads from the read end of the pipe until EOF and
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closes its end, at which point the transfer is complete.
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</description>
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<arg name="mime_type" type="string"/>
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<arg name="fd" type="fd"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy the primary selection offer">
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Destroy the primary selection offer.
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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 announcing the wp_primary_selection_offer
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through wp_primary_selection_device.data_offer. One event is sent per
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offered mime type.
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</description>
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<arg name="mime_type" type="string"/>
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</event>
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</interface>
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<interface name="gtk_primary_selection_source" version="1">
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<description summary="offer to replace the contents of the primary selection">
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The source side of a wp_primary_selection_offer, it provides a way to
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describe the offered data and respond to requests to transfer the
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requested contents of the primary selection clipboard.
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</description>
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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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</description>
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<arg name="mime_type" type="string"/>
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</request>
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<request name="destroy" type="destructor">
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<description summary="destroy the primary selection source">
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Destroy the primary selection source.
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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 primary selection contents">
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Request for the current primary selection contents from the client.
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Send the specified mime type over the passed file descriptor, then
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close it.
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</description>
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<arg name="mime_type" type="string"/>
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<arg name="fd" type="fd"/>
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</event>
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<event name="cancelled">
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<description summary="request for primary selection contents was canceled">
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This primary selection source is no longer valid. The client should
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clean up and destroy this primary selection source.
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</description>
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</event>
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</interface>
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</protocol>
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@ -23,6 +23,7 @@ wayland_scanner_client = generator(
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protocols = [
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[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
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'gamma-control.xml',
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'gtk-primary-selection.xml',
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'screenshooter.xml',
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'server-decoration.xml',
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]
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@ -30,6 +31,7 @@ protocols = [
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client_protocols = [
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[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
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'gamma-control.xml',
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'gtk-primary-selection.xml',
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'screenshooter.xml',
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'server-decoration.xml',
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]
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@ -12,6 +12,7 @@ lib_wlr_types = static_library(
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'wlr_output.c',
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'wlr_output_layout.c',
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'wlr_pointer.c',
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'wlr_primary_selection.c',
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'wlr_region.c',
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'wlr_screenshooter.c',
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'wlr_seat.c',
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@ -0,0 +1,131 @@
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#define _XOPEN_SOURCE 700
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#include <stdlib.h>
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#include <string.h>
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#include <gtk-primary-selection-protocol.h>
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#include <wlr/types/wlr_primary_selection.h>
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#include <wlr/util/log.h>
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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 wlr_primary_selection_source *source =
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wl_resource_get_user_data(resource);
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char **p = wl_array_add(&source->mime_types, sizeof(*p));
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if (p) {
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*p = strdup(mime_type);
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}
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if (p == NULL || *p == NULL) {
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wl_resource_post_no_memory(resource);
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}
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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 gtk_primary_selection_source_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_resource_handle_destroy( struct wl_resource *resource) {
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struct wlr_primary_selection_source *source =
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wl_resource_get_user_data(resource);
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wl_signal_emit(&source->events.destroy, source);
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free(source);
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}
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static void device_manager_handle_create_source(struct wl_client *client,
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struct wl_resource *manager_resource, uint32_t id) {
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//struct wlr_primary_selection_device_manager *manager =
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// wl_resource_get_user_data(manager_resource);
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struct wlr_primary_selection_source *source =
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calloc(1, sizeof(struct wlr_primary_selection_source));
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if (source == NULL) {
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wl_client_post_no_memory(client);
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return;
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}
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int version = wl_resource_get_version(manager_resource);
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source->resource = wl_resource_create(client,
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>k_primary_selection_source_interface, version, id);
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if (source->resource == NULL) {
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free(source);
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wl_client_post_no_memory(client);
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return;
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}
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wl_resource_set_implementation(source->resource, &source_impl, source,
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source_resource_handle_destroy);
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wl_signal_init(&source->events.destroy);
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wl_array_init(&source->mime_types);
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wlr_log(L_DEBUG, "new gtk_primary_selection_source %p (res %p)", source,
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source->resource);
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}
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static void device_manager_handle_destroy(struct wl_client *client,
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struct wl_resource *manager_resource) {
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wl_resource_destroy(manager_resource);
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}
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static const struct gtk_primary_selection_device_manager_interface
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device_manager_impl = {
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.create_source = device_manager_handle_create_source,
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//.get_device = device_manager_handle_get_device,
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.destroy = device_manager_handle_destroy,
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};
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static void primary_selection_device_manager_bind(struct wl_client *client,
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void *data, uint32_t version, uint32_t id) {
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struct wlr_primary_selection_device_manager *manager = data;
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struct wl_resource *resource = wl_resource_create(client,
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>k_primary_selection_device_manager_interface, version, id);
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if (resource == NULL) {
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wl_client_post_no_memory(client);
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return;
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}
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wl_resource_set_implementation(resource, &device_manager_impl, manager,
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NULL);
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}
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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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struct wlr_primary_selection_device_manager *manager =
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wl_container_of(listener, manager, display_destroy);
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wlr_primary_selection_device_manager_destroy(manager);
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}
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struct wlr_primary_selection_device_manager *
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wlr_primary_selection_device_manager_create(
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struct wl_display *display) {
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struct wlr_primary_selection_device_manager *manager =
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calloc(1, sizeof(struct wlr_primary_selection_device_manager));
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if (manager == NULL) {
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return NULL;
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}
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manager->global = wl_global_create(display,
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>k_primary_selection_device_manager_interface, 1, manager,
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primary_selection_device_manager_bind);
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if (manager->global == NULL) {
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free(manager);
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return NULL;
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}
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manager->display_destroy.notify = handle_display_destroy;
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wl_display_add_destroy_listener(display, &manager->display_destroy);
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return manager;
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}
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void wlr_primary_selection_device_manager_destroy(
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struct wlr_primary_selection_device_manager *manager) {
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if (manager == NULL) {
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return;
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}
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// TODO: free wl_resources
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wl_global_destroy(manager->global);
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free(manager);
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}
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