GUACAMOLE-1204: Add RDP support for multi-touch events via RDPEI channel.
This commit is contained in:
parent
048a59310b
commit
5eb2867733
@ -56,6 +56,7 @@ libguac_client_rdp_la_SOURCES = \
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channels/rdpdr/rdpdr-messages.c \
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channels/rdpdr/rdpdr-messages.c \
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channels/rdpdr/rdpdr-printer.c \
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channels/rdpdr/rdpdr-printer.c \
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channels/rdpdr/rdpdr.c \
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channels/rdpdr/rdpdr.c \
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channels/rdpei.c \
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channels/rdpsnd/rdpsnd-messages.c \
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channels/rdpsnd/rdpsnd-messages.c \
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channels/rdpsnd/rdpsnd.c \
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channels/rdpsnd/rdpsnd.c \
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client.c \
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client.c \
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@ -101,6 +102,7 @@ noinst_HEADERS = \
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channels/rdpdr/rdpdr-messages.h \
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channels/rdpdr/rdpdr-messages.h \
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channels/rdpdr/rdpdr-printer.h \
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channels/rdpdr/rdpdr-printer.h \
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channels/rdpdr/rdpdr.h \
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channels/rdpdr/rdpdr.h \
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channels/rdpei.h \
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channels/rdpsnd/rdpsnd-messages.h \
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channels/rdpsnd/rdpsnd-messages.h \
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channels/rdpsnd/rdpsnd.h \
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channels/rdpsnd/rdpsnd.h \
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client.h \
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client.h \
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170
src/protocols/rdp/channels/rdpei.c
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170
src/protocols/rdp/channels/rdpei.c
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@ -0,0 +1,170 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "channels/rdpei.h"
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#include "common/surface.h"
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#include "plugins/channels.h"
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#include "rdp.h"
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#include "settings.h"
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#include <freerdp/client/rdpei.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/event.h>
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#include <guacamole/client.h>
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#include <guacamole/timestamp.h>
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#include <stdlib.h>
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#include <string.h>
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guac_rdp_rdpei* guac_rdp_rdpei_alloc() {
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guac_rdp_rdpei* rdpei = malloc(sizeof(guac_rdp_rdpei));
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/* Not yet connected */
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rdpei->rdpei = NULL;
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/* No active touches */
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for (int i = 0; i < GUAC_RDP_RDPEI_MAX_TOUCHES; i++)
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rdpei->touch[i].active = 0;
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return rdpei;
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}
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void guac_rdp_rdpei_free(guac_rdp_rdpei* rdpei) {
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free(rdpei);
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}
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/**
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* Callback which associates handlers specific to Guacamole with the
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* RdpeiClientContext instance allocated by FreeRDP to deal with received
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* RDPEI (multi-touch input) messages.
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*
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* This function is called whenever a channel connects via the PubSub event
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* system within FreeRDP, but only has any effect if the connected channel is
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* the RDPEI channel. This specific callback is registered with the
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* PubSub system of the relevant rdpContext when guac_rdp_rdpei_load_plugin() is
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* called.
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*
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* @param context
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* The rdpContext associated with the active RDP session.
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*
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* @param e
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* Event-specific arguments, mainly the name of the channel, and a
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* reference to the associated plugin loaded for that channel by FreeRDP.
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*/
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static void guac_rdp_rdpei_channel_connected(rdpContext* context,
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ChannelConnectedEventArgs* e) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
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guac_rdp_rdpei* guac_rdpei = rdp_client->rdpei;
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/* Ignore connection event if it's not for the RDPEI channel */
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if (strcmp(e->name, RDPEI_DVC_CHANNEL_NAME) != 0)
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return;
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/* Store reference to the RDPEI plugin once it's connected */
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RdpeiClientContext* rdpei = (RdpeiClientContext*) e->pInterface;
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guac_rdpei->rdpei = rdpei;
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/* Declare level of multi-touch support */
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guac_common_surface_set_multitouch(rdp_client->display->default_surface,
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GUAC_RDP_RDPEI_MAX_TOUCHES);
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guac_client_log(client, GUAC_LOG_DEBUG, "RDPEI channel will be used for "
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"multi-touch support.");
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}
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void guac_rdp_rdpei_load_plugin(rdpContext* context) {
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/* Subscribe to and handle channel connected events */
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PubSub_SubscribeChannelConnected(context->pubSub,
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(pChannelConnectedEventHandler) guac_rdp_rdpei_channel_connected);
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/* Add "rdpei" channel */
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guac_freerdp_dynamic_channel_collection_add(context->settings, "rdpei", NULL);
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}
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int guac_rdp_rdpei_touch_update(guac_rdp_rdpei* rdpei, int id, int x, int y,
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double force) {
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int contact_id; /* Ignored */
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/* Track touches only if channel is connected */
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RdpeiClientContext* context = rdpei->rdpei;
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if (context == NULL)
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return 1;
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/* Locate active touch having provided ID */
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guac_rdp_rdpei_touch* touch = NULL;
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for (int i = 0; i < GUAC_RDP_RDPEI_MAX_TOUCHES; i++) {
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if (rdpei->touch[i].active && rdpei->touch[i].id == id) {
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touch = &rdpei->touch[i];
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break;
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}
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}
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/* If no such touch exists, add it */
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if (touch == NULL) {
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for (int i = 0; i < GUAC_RDP_RDPEI_MAX_TOUCHES; i++) {
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if (!rdpei->touch[i].active) {
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touch = &rdpei->touch[i];
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touch->id = id;
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break;
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}
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}
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}
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/* If the touch couldn't be added, we're already at maximum touch capacity.
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* Drop the event. */
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if (touch == NULL)
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return 1;
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/* Signal the end of an established touch if touch force has become zero
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* (this should be a safe comparison, as zero has an exact representation
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* in floating point, and the client side will use an exact value to
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* represent the absence of a touch) */
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if (force == 0.0) {
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/* Ignore release of touches that we aren't tracking */
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if (!touch->active)
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return 1;
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context->TouchEnd(context, id, x, y, &contact_id);
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touch->active = 0;
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}
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/* Signal the start of a touch if this is the first we've seen it */
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else if (!touch->active) {
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context->TouchBegin(context, id, x, y, &contact_id);
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touch->active = 1;
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}
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/* Established touches need only be updated */
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else
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context->TouchUpdate(context, id, x, y, &contact_id);
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return 0;
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}
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154
src/protocols/rdp/channels/rdpei.h
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154
src/protocols/rdp/channels/rdpei.h
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef GUAC_RDP_CHANNELS_RDPEI_H
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#define GUAC_RDP_CHANNELS_RDPEI_H
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#include "settings.h"
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#include <freerdp/client/rdpei.h>
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#include <freerdp/freerdp.h>
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#include <guacamole/client.h>
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#include <guacamole/timestamp.h>
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/**
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* The maximum number of simultaneously-tracked touches.
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*/
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#define GUAC_RDP_RDPEI_MAX_TOUCHES 10
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/**
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* A single, tracked touch contact.
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*/
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typedef struct guac_rdp_rdpei_touch {
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/**
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* Whether this touch is active (1) or inactive (0). An active touch is
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* being tracked, while an inactive touch is simple an empty space awaiting
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* use by some future touch event.
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*/
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int active;
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/**
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* The unique ID representing this touch contact.
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*/
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int id;
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/**
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* The X-coordinate of this touch, in pixels.
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*/
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int x;
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/**
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* The Y-coordinate of this touch, in pixels.
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*/
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int y;
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} guac_rdp_rdpei_touch;
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/**
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* Multi-touch input module.
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*/
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typedef struct guac_rdp_rdpei {
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/**
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* RDPEI control interface.
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*/
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RdpeiClientContext* rdpei;
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/**
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* All currently-tracked touches.
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*/
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guac_rdp_rdpei_touch touch[GUAC_RDP_RDPEI_MAX_TOUCHES];
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} guac_rdp_rdpei;
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/**
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* Allocates a new RDPEI module, which will ultimately control the RDPEI
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* channel once connected. The RDPEI channel allows multi-touch input
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* events to be sent to the RDP server.
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*
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* @return
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* A newly-allocated RDPEI module.
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*/
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guac_rdp_rdpei* guac_rdp_rdpei_alloc();
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/**
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* Frees the resources associated with support for the RDPEI channel. Only
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* resources specific to Guacamole are freed. Resources specific to FreeRDP's
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* handling of the RDPEI channel will be freed by FreeRDP. If no resources are
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* currently allocated for RDPEI, this function has no effect.
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*
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* @param rdpei
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* The RDPEI module to free.
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*/
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void guac_rdp_rdpei_free(guac_rdp_rdpei* rdpei);
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/**
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* Adds FreeRDP's "rdpei" plugin to the list of dynamic virtual channel plugins
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* to be loaded by FreeRDP's "drdynvc" plugin. The context of the plugin will
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* automatically be assicated with the guac_rdp_rdpei instance pointed to by the
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* current guac_rdp_client. The plugin will only be loaded once the "drdynvc"
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* plugin is loaded. The "rdpei" plugin ultimately adds support for multi-touch
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* input via the RDPEI channel.
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*
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* If failures occur, messages noting the specifics of those failures will be
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* logged, and the RDP side of multi-touch support will not be functional.
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*
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* This MUST be called within the PreConnect callback of the freerdp instance
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* for multi-touch support to be loaded.
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*
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* @param context
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* The rdpContext associated with the active RDP session.
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*/
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void guac_rdp_rdpei_load_plugin(rdpContext* context);
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/**
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* Reports to the RDP server that the status of a single touch contact has
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* changed. Depending on the amount of force associated with the touch and
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* whether the touch has been encountered before, this will result a new touch
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* contact, updates to an existing contact, or removal of an existing contact.
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* If the RDPEI channel has not yet been connected, touches will be ignored and
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* dropped until it is connected.
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*
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* @param rdpei
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* The RDPEI module associated with the RDP session.
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*
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* @param id
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* An arbitrary integer ID unique to the touch being updated.
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*
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* @param x
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* The X-coordinate of the touch, in pixels.
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*
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* @param y
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* The Y-coordinate of the touch, in pixels.
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*
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* @param force
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* The amount of force currently being exerted on the device by the touch
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* contact in question, where 1.0 is the maximum amount of force
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* representable and 0.0 indicates the contact has been lifted.
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*
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* @return
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* Zero if the touch event was successfully processed, non-zero if the
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* touch event had to be dropped.
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*/
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int guac_rdp_rdpei_touch_update(guac_rdp_rdpei* rdpei, int id, int x, int y,
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double force);
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#endif
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@ -147,6 +147,9 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
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/* Init display update module */
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/* Init display update module */
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rdp_client->disp = guac_rdp_disp_alloc();
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rdp_client->disp = guac_rdp_disp_alloc();
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/* Init multi-touch support module (RDPEI) */
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rdp_client->rdpei = guac_rdp_rdpei_alloc();
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/* Redirect FreeRDP log messages to guac_client_log() */
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/* Redirect FreeRDP log messages to guac_client_log() */
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guac_rdp_redirect_wlog(client);
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guac_rdp_redirect_wlog(client);
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@ -187,6 +190,9 @@ int guac_rdp_client_free_handler(guac_client* client) {
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/* Free display update module */
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/* Free display update module */
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guac_rdp_disp_free(rdp_client->disp);
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guac_rdp_disp_free(rdp_client->disp);
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/* Free multi-touch support module (RDPEI) */
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guac_rdp_rdpei_free(rdp_client->rdpei);
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/* Clean up filesystem, if allocated */
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/* Clean up filesystem, if allocated */
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if (rdp_client->filesystem != NULL)
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if (rdp_client->filesystem != NULL)
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guac_rdp_fs_free(rdp_client->filesystem);
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guac_rdp_fs_free(rdp_client->filesystem);
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@ -18,6 +18,7 @@
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*/
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*/
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#include "channels/disp.h"
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#include "channels/disp.h"
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#include "channels/rdpei.h"
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#include "common/cursor.h"
|
#include "common/cursor.h"
|
||||||
#include "common/display.h"
|
#include "common/display.h"
|
||||||
#include "common/recording.h"
|
#include "common/recording.h"
|
||||||
@ -122,6 +123,28 @@ complete:
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
int guac_rdp_user_touch_handler(guac_user* user, int id, int x, int y,
|
||||||
|
int x_radius, int y_radius, double angle, double force) {
|
||||||
|
|
||||||
|
guac_client* client = user->client;
|
||||||
|
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
|
||||||
|
|
||||||
|
pthread_rwlock_rdlock(&(rdp_client->lock));
|
||||||
|
|
||||||
|
/* Skip if not yet connected */
|
||||||
|
freerdp* rdp_inst = rdp_client->rdp_inst;
|
||||||
|
if (rdp_inst == NULL)
|
||||||
|
goto complete;
|
||||||
|
|
||||||
|
/* Forward touch event along RDPEI channel */
|
||||||
|
guac_rdp_rdpei_touch_update(rdp_client->rdpei, id, x, y, force);
|
||||||
|
|
||||||
|
complete:
|
||||||
|
pthread_rwlock_unlock(&(rdp_client->lock));
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
int guac_rdp_user_key_handler(guac_user* user, int keysym, int pressed) {
|
int guac_rdp_user_key_handler(guac_user* user, int keysym, int pressed) {
|
||||||
|
|
||||||
guac_client* client = user->client;
|
guac_client* client = user->client;
|
||||||
|
@ -27,6 +27,11 @@
|
|||||||
*/
|
*/
|
||||||
guac_user_mouse_handler guac_rdp_user_mouse_handler;
|
guac_user_mouse_handler guac_rdp_user_mouse_handler;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Handler for Guacamole user touch events.
|
||||||
|
*/
|
||||||
|
guac_user_touch_handler guac_rdp_user_touch_handler;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Handler for Guacamole user key events.
|
* Handler for Guacamole user key events.
|
||||||
*/
|
*/
|
||||||
|
@ -27,6 +27,7 @@
|
|||||||
#include "channels/pipe-svc.h"
|
#include "channels/pipe-svc.h"
|
||||||
#include "channels/rail.h"
|
#include "channels/rail.h"
|
||||||
#include "channels/rdpdr/rdpdr.h"
|
#include "channels/rdpdr/rdpdr.h"
|
||||||
|
#include "channels/rdpei.h"
|
||||||
#include "channels/rdpsnd/rdpsnd.h"
|
#include "channels/rdpsnd/rdpsnd.h"
|
||||||
#include "client.h"
|
#include "client.h"
|
||||||
#include "color.h"
|
#include "color.h"
|
||||||
@ -100,6 +101,10 @@ BOOL rdp_freerdp_pre_connect(freerdp* instance) {
|
|||||||
if (settings->resize_method == GUAC_RESIZE_DISPLAY_UPDATE)
|
if (settings->resize_method == GUAC_RESIZE_DISPLAY_UPDATE)
|
||||||
guac_rdp_disp_load_plugin(context);
|
guac_rdp_disp_load_plugin(context);
|
||||||
|
|
||||||
|
/* Load "rdpei" plugin for multi-touch support */
|
||||||
|
if (settings->enable_touch)
|
||||||
|
guac_rdp_rdpei_load_plugin(context);
|
||||||
|
|
||||||
/* Load "AUDIO_INPUT" plugin for audio input*/
|
/* Load "AUDIO_INPUT" plugin for audio input*/
|
||||||
if (settings->enable_audio_input) {
|
if (settings->enable_audio_input) {
|
||||||
rdp_client->audio_input = guac_rdp_audio_buffer_alloc();
|
rdp_client->audio_input = guac_rdp_audio_buffer_alloc();
|
||||||
|
@ -23,6 +23,7 @@
|
|||||||
#include "channels/audio-input/audio-buffer.h"
|
#include "channels/audio-input/audio-buffer.h"
|
||||||
#include "channels/cliprdr.h"
|
#include "channels/cliprdr.h"
|
||||||
#include "channels/disp.h"
|
#include "channels/disp.h"
|
||||||
|
#include "channels/rdpei.h"
|
||||||
#include "common/clipboard.h"
|
#include "common/clipboard.h"
|
||||||
#include "common/display.h"
|
#include "common/display.h"
|
||||||
#include "common/list.h"
|
#include "common/list.h"
|
||||||
@ -148,6 +149,11 @@ typedef struct guac_rdp_client {
|
|||||||
*/
|
*/
|
||||||
guac_rdp_disp* disp;
|
guac_rdp_disp* disp;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Multi-touch support module (RDPEI).
|
||||||
|
*/
|
||||||
|
guac_rdp_rdpei* rdpei;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* List of all available static virtual channels.
|
* List of all available static virtual channels.
|
||||||
*/
|
*/
|
||||||
|
@ -108,6 +108,7 @@ const char* GUAC_RDP_CLIENT_ARGS[] = {
|
|||||||
"create-recording-path",
|
"create-recording-path",
|
||||||
"resize-method",
|
"resize-method",
|
||||||
"enable-audio-input",
|
"enable-audio-input",
|
||||||
|
"enable-touch",
|
||||||
"read-only",
|
"read-only",
|
||||||
|
|
||||||
"gateway-hostname",
|
"gateway-hostname",
|
||||||
@ -527,6 +528,12 @@ enum RDP_ARGS_IDX {
|
|||||||
*/
|
*/
|
||||||
IDX_ENABLE_AUDIO_INPUT,
|
IDX_ENABLE_AUDIO_INPUT,
|
||||||
|
|
||||||
|
/**
|
||||||
|
* "true" if multi-touch support should be enabled for the RDP connection,
|
||||||
|
* "false" or blank otherwise.
|
||||||
|
*/
|
||||||
|
IDX_ENABLE_TOUCH,
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* "true" if this connection should be read-only (user input should be
|
* "true" if this connection should be read-only (user input should be
|
||||||
* dropped), "false" or blank otherwise.
|
* dropped), "false" or blank otherwise.
|
||||||
@ -1070,6 +1077,11 @@ guac_rdp_settings* guac_rdp_parse_args(guac_user* user,
|
|||||||
settings->resize_method = GUAC_RESIZE_NONE;
|
settings->resize_method = GUAC_RESIZE_NONE;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Multi-touch input enable/disable */
|
||||||
|
settings->enable_touch =
|
||||||
|
guac_user_parse_args_boolean(user, GUAC_RDP_CLIENT_ARGS, argv,
|
||||||
|
IDX_ENABLE_TOUCH, 0);
|
||||||
|
|
||||||
/* Audio input enable/disable */
|
/* Audio input enable/disable */
|
||||||
settings->enable_audio_input =
|
settings->enable_audio_input =
|
||||||
guac_user_parse_args_boolean(user, GUAC_RDP_CLIENT_ARGS, argv,
|
guac_user_parse_args_boolean(user, GUAC_RDP_CLIENT_ARGS, argv,
|
||||||
|
@ -525,6 +525,11 @@ typedef struct guac_rdp_settings {
|
|||||||
*/
|
*/
|
||||||
int enable_audio_input;
|
int enable_audio_input;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Whether multi-touch support is enabled.
|
||||||
|
*/
|
||||||
|
int enable_touch;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* The hostname of the remote desktop gateway that should be used as an
|
* The hostname of the remote desktop gateway that should be used as an
|
||||||
* intermediary for the remote desktop connection. If no gateway should
|
* intermediary for the remote desktop connection. If no gateway should
|
||||||
|
@ -105,6 +105,10 @@ int guac_rdp_user_join_handler(guac_user* user, int argc, char** argv) {
|
|||||||
user->mouse_handler = guac_rdp_user_mouse_handler;
|
user->mouse_handler = guac_rdp_user_mouse_handler;
|
||||||
user->key_handler = guac_rdp_user_key_handler;
|
user->key_handler = guac_rdp_user_key_handler;
|
||||||
|
|
||||||
|
/* Multi-touch events */
|
||||||
|
if (settings->enable_touch)
|
||||||
|
user->touch_handler = guac_rdp_user_touch_handler;
|
||||||
|
|
||||||
/* Inbound (client to server) clipboard transfer */
|
/* Inbound (client to server) clipboard transfer */
|
||||||
if (!settings->disable_paste)
|
if (!settings->disable_paste)
|
||||||
user->clipboard_handler = guac_rdp_clipboard_handler;
|
user->clipboard_handler = guac_rdp_clipboard_handler;
|
||||||
|
Loading…
Reference in New Issue
Block a user