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Update drag protocol to use fd passing for data transfer

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This commit is contained in:
Kristian Høgsberg 2010-08-27 20:29:56 -04:00
parent aebeee0bbf
commit 4eb536091a
4 changed files with 105 additions and 52 deletions
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37
protocol.xml
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@ -115,17 +115,19 @@
<!-- Cancel the drag. -->
<request name="cancel"/>
<!-- Send the data to the target that accepted the offer -->
<request name="send">
<arg name="contents" type="array"/>
</request>
<!-- Called by the drag target to accept the offer of the given
type -->
<request name="accept">
<arg name="type" type="string"/>
</request>
<!-- Called by the drag target to initiate the drag finish
sequence. Send the pipe fd to the compositor, which forwards
it to the source in the 'finish' event -->
<request name="receive">
<arg name="fd" type="fd"/>
</request>
<!-- Sent at connect time to announce the association -->
<event name="device">
<arg name="device" type="object" interface="input_device"/>
@ -167,18 +169,23 @@
<arg name="mime_type" type="string"/>
</event>
<!-- Sent to drag originator when the drag is finished. It's also
sent in case an originator tries to activate a drag after the
grab was released. If the originator didn't receive a
'target' event before receiving the 'finish' event, no drag
target was found and the originator should not send data. -->
<event name="finish"/>
<!-- Sent to target, to indicate that the drag is finishing. The
last motion/pointer_focus event gives the location of the
drop. Target must respond with the 'receive' request, which
sends an fd to the source for writing the drag data. -->
<event name="drop"/>
<!-- Sent to target, contains dragged data. Ends transaction on
the target side. -->
<event name="drop">
<arg name="contents" type="array"/>
<!-- Sent to drag source when the drag is finished. The final
mime type is that of the last target event. If that was
NULL, no drag target was valid when the drag finished, fd is
undefined and the source should not send data. The event is
also sent in case a drag source tries to activate a drag
after the grab was released, in which case mime_type will
also be NULL. -->
<event name="finish">
<arg name="fd" type="fd"/>
</event>
</interface>
<interface name="surface" version="1">