FreeRDP/client/X11/xf_input.c

728 lines
15 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* X11 Input
*
* Copyright 2013 Corey Clayton <can.of.tuna@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef WITH_XCURSOR
#include <X11/Xcursor/Xcursor.h>
#endif
#ifdef WITH_XI
#include <X11/extensions/XInput2.h>
#endif
#include <math.h>
#include "xf_event.h"
#include "xf_input.h"
#include <freerdp/log.h>
#define TAG CLIENT_TAG("x11")
#ifdef WITH_XI
#define MAX_CONTACTS 2
#define PAN_THRESHOLD 50
#define ZOOM_THRESHOLD 10
#define MIN_FINGER_DIST 5
typedef struct touch_contact
{
int id;
int count;
double pos_x;
double pos_y;
double last_x;
double last_y;
} touchContact;
touchContact contacts[MAX_CONTACTS];
int active_contacts;
int lastEvType;
XIDeviceEvent lastEvent;
double firstDist = -1.0;
double lastDist;
double z_vector;
double px_vector;
double py_vector;
int xinput_opcode;
int scale_cnt;
const char* xf_input_get_class_string(int class)
{
if (class == XIKeyClass)
return "XIKeyClass";
else if (class == XIButtonClass)
return "XIButtonClass";
else if (class == XIValuatorClass)
return "XIValuatorClass";
else if (class == XIScrollClass)
return "XIScrollClass";
else if (class == XITouchClass)
return "XITouchClass";
return "XIUnknownClass";
}
int xf_input_init(xfContext* xfc, Window window)
{
int i, j;
int nmasks;
int ndevices;
int major = 2;
int minor = 2;
Status xstatus;
XIDeviceInfo* info;
XIEventMask evmasks[64];
int opcode, event, error;
BYTE masks[8][XIMaskLen(XI_LASTEVENT)];
z_vector = 0;
px_vector = 0;
py_vector = 0;
nmasks = 0;
ndevices = 0;
active_contacts = 0;
ZeroMemory(contacts, sizeof(touchContact) * MAX_CONTACTS);
if (!XQueryExtension(xfc->display, "XInputExtension", &opcode, &event, &error))
{
WLog_WARN(TAG, "XInput extension not available.");
return -1;
}
xfc->XInputOpcode = opcode;
XIQueryVersion(xfc->display, &major, &minor);
if (major * 1000 + minor < 2002)
{
WLog_WARN(TAG, "Server does not support XI 2.2");
return -1;
}
if (xfc->settings->MultiTouchInput)
xfc->use_xinput = TRUE;
info = XIQueryDevice(xfc->display, XIAllDevices, &ndevices);
for (i = 0; i < ndevices; i++)
{
BOOL touch = FALSE;
XIDeviceInfo* dev = &info[i];
for (j = 0; j < dev->num_classes; j++)
{
XIAnyClassInfo* class = dev->classes[j];
XITouchClassInfo* t = (XITouchClassInfo*) class;
if ((class->type == XITouchClass) && (t->mode == XIDirectTouch) &&
(strcmp(dev->name, "Virtual core pointer") != 0))
{
touch = TRUE;
}
}
for (j = 0; j < dev->num_classes; j++)
{
XIAnyClassInfo* class = dev->classes[j];
XITouchClassInfo* t = (XITouchClassInfo*) class;
if (xfc->settings->MultiTouchInput)
{
WLog_INFO(TAG, "%s (%d) \"%s\" id: %d",
xf_input_get_class_string(class->type),
class->type, dev->name, dev->deviceid);
}
evmasks[nmasks].mask = masks[nmasks];
evmasks[nmasks].mask_len = sizeof(masks[0]);
ZeroMemory(masks[nmasks], sizeof(masks[0]));
evmasks[nmasks].deviceid = dev->deviceid;
if ((class->type == XITouchClass) && (t->mode == XIDirectTouch) &&
(strcmp(dev->name, "Virtual core pointer") != 0))
{
if (xfc->settings->MultiTouchInput)
{
WLog_INFO(TAG, "%s %s touch device (id: %d, mode: %d), supporting %d touches.",
dev->name, (t->mode == XIDirectTouch) ? "direct" : "dependent",
dev->deviceid, t->mode, t->num_touches);
}
XISetMask(masks[nmasks], XI_TouchBegin);
XISetMask(masks[nmasks], XI_TouchUpdate);
XISetMask(masks[nmasks], XI_TouchEnd);
nmasks++;
}
if (xfc->use_xinput)
{
if (!touch && (class->type == XIButtonClass) && strcmp(dev->name, "Virtual core pointer"))
{
WLog_INFO(TAG, "%s button device (id: %d, mode: %d)",
dev->name,
dev->deviceid, t->mode);
XISetMask(masks[nmasks], XI_ButtonPress);
XISetMask(masks[nmasks], XI_ButtonRelease);
XISetMask(masks[nmasks], XI_Motion);
nmasks++;
}
}
}
}
XIFreeDeviceInfo(info);
if (nmasks > 0)
xstatus = XISelectEvents(xfc->display, window, evmasks, nmasks);
return 0;
}
BOOL xf_input_is_duplicate(XGenericEventCookie* cookie)
{
XIDeviceEvent* event;
event = cookie->data;
if ( (lastEvent.time == event->time) &&
(lastEvType == cookie->evtype) &&
(lastEvent.detail == event->detail) &&
(lastEvent.event_x == event->event_x) &&
(lastEvent.event_y == event->event_y) )
{
return TRUE;
}
return FALSE;
}
void xf_input_save_last_event(XGenericEventCookie* cookie)
{
XIDeviceEvent* event;
event = cookie->data;
lastEvType = cookie->evtype;
lastEvent.time = event->time;
lastEvent.detail = event->detail;
lastEvent.event_x = event->event_x;
lastEvent.event_y = event->event_y;
}
void xf_input_detect_pan(xfContext* xfc)
{
double dx[2];
double dy[2];
double px;
double py;
double dist_x;
double dist_y;
if (active_contacts != 2)
{
return;
}
dx[0] = contacts[0].pos_x - contacts[0].last_x;
dx[1] = contacts[1].pos_x - contacts[1].last_x;
dy[0] = contacts[0].pos_y - contacts[0].last_y;
dy[1] = contacts[1].pos_y - contacts[1].last_y;
px = fabs(dx[0]) < fabs(dx[1]) ? dx[0] : dx[1];
py = fabs(dy[0]) < fabs(dy[1]) ? dy[0] : dy[1];
px_vector += px;
py_vector += py;
dist_x = fabs(contacts[0].pos_x - contacts[1].pos_x);
dist_y = fabs(contacts[0].pos_y - contacts[1].pos_y);
if (dist_y > MIN_FINGER_DIST)
{
if (px_vector > PAN_THRESHOLD)
{
{
PanningChangeEventArgs e;
EventArgsInit(&e, "xfreerdp");
e.XPan = 5;
e.YPan = 0;
PubSub_OnPanningChange(((rdpContext*) xfc)->pubSub, xfc, &e);
}
px_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
else if (px_vector < -PAN_THRESHOLD)
{
{
PanningChangeEventArgs e;
EventArgsInit(&e, "xfreerdp");
e.XPan = -5;
e.YPan = 0;
PubSub_OnPanningChange(((rdpContext*) xfc)->pubSub, xfc, &e);
}
px_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
}
if (dist_x > MIN_FINGER_DIST)
{
if (py_vector > PAN_THRESHOLD)
{
{
PanningChangeEventArgs e;
EventArgsInit(&e, "xfreerdp");
e.XPan = 0;
e.YPan = 5;
PubSub_OnPanningChange(((rdpContext*) xfc)->pubSub, xfc, &e);
}
py_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
else if (py_vector < -PAN_THRESHOLD)
{
{
PanningChangeEventArgs e;
EventArgsInit(&e, "xfreerdp");
e.XPan = 0;
e.YPan = -5;
PubSub_OnPanningChange(((rdpContext*) xfc)->pubSub, xfc, &e);
}
py_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
}
}
void xf_input_detect_pinch(xfContext* xfc)
{
double dist;
double zoom;
double delta;
ResizeWindowEventArgs e;
if (active_contacts != 2)
{
firstDist = -1.0;
return;
}
/* first calculate the distance */
dist = sqrt(pow(contacts[1].pos_x - contacts[0].last_x, 2.0) +
pow(contacts[1].pos_y - contacts[0].last_y, 2.0));
/* if this is the first 2pt touch */
if (firstDist <= 0)
{
firstDist = dist;
lastDist = firstDist;
scale_cnt = 0;
z_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
else
{
delta = lastDist - dist;
if(delta > 1.0)
delta = 1.0;
if(delta < -1.0)
delta = -1.0;
/* compare the current distance to the first one */
zoom = (dist / firstDist);
z_vector += delta;
lastDist = dist;
if (z_vector > ZOOM_THRESHOLD)
{
xfc->settings->ScalingFactor -= 0.05;
if (xfc->settings->ScalingFactor < 0.8)
xfc->settings->ScalingFactor = 0.8;
EventArgsInit(&e, "xfreerdp");
e.width = (int) xfc->originalWidth * xfc->settings->ScalingFactor;
e.height = (int) xfc->originalHeight * xfc->settings->ScalingFactor;
xf_transform_window(xfc);
PubSub_OnResizeWindow(((rdpContext*) xfc)->pubSub, xfc, &e);
xf_draw_screen_scaled(xfc, 0, 0, 0, 0, FALSE);
z_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
if (z_vector < -ZOOM_THRESHOLD)
{
xfc->settings->ScalingFactor += 0.05;
if (xfc->settings->ScalingFactor > 1.2)
xfc->settings->ScalingFactor = 1.2;
EventArgsInit(&e, "xfreerdp");
e.width = (int) xfc->originalWidth * xfc->settings->ScalingFactor;
e.height = (int) xfc->originalHeight * xfc->settings->ScalingFactor;
xf_transform_window(xfc);
PubSub_OnResizeWindow(((rdpContext*) xfc)->pubSub, xfc, &e);
xf_draw_screen_scaled(xfc, 0, 0, 0, 0, FALSE);
z_vector = 0;
px_vector = 0;
py_vector = 0;
z_vector = 0;
}
}
}
void xf_input_touch_begin(xfContext* xfc, XIDeviceEvent* event)
{
int i;
for (i = 0; i < MAX_CONTACTS; i++)
{
if (contacts[i].id == 0)
{
contacts[i].id = event->detail;
contacts[i].count = 1;
contacts[i].pos_x = event->event_x;
contacts[i].pos_y = event->event_y;
active_contacts++;
break;
}
}
}
void xf_input_touch_update(xfContext* xfc, XIDeviceEvent* event)
{
int i;
for (i = 0; i < MAX_CONTACTS; i++)
{
if (contacts[i].id == event->detail)
{
contacts[i].count++;
contacts[i].last_x = contacts[i].pos_x;
contacts[i].last_y = contacts[i].pos_y;
contacts[i].pos_x = event->event_x;
contacts[i].pos_y = event->event_y;
xf_input_detect_pinch(xfc);
xf_input_detect_pan(xfc);
break;
}
}
}
void xf_input_touch_end(xfContext* xfc, XIDeviceEvent* event)
{
int i;
for (i = 0; i < MAX_CONTACTS; i++)
{
if (contacts[i].id == event->detail)
{
contacts[i].id = 0;
contacts[i].count = 0;
active_contacts--;
break;
}
}
}
int xf_input_handle_event_local(xfContext* xfc, XEvent* event)
{
XGenericEventCookie* cookie = &event->xcookie;
XGetEventData(xfc->display, cookie);
if ((cookie->type == GenericEvent) && (cookie->extension == xfc->XInputOpcode))
{
switch (cookie->evtype)
{
case XI_TouchBegin:
if (xf_input_is_duplicate(cookie) == FALSE)
xf_input_touch_begin(xfc, cookie->data);
xf_input_save_last_event(cookie);
break;
case XI_TouchUpdate:
if (xf_input_is_duplicate(cookie) == FALSE)
xf_input_touch_update(xfc, cookie->data);
xf_input_save_last_event(cookie);
break;
case XI_TouchEnd:
if (xf_input_is_duplicate(cookie) == FALSE)
xf_input_touch_end(xfc, cookie->data);
xf_input_save_last_event(cookie);
break;
default:
WLog_ERR(TAG, "unhandled xi type= %d", cookie->evtype);
break;
}
}
XFreeEventData(xfc->display,cookie);
return 0;
}
char* xf_input_touch_state_string(DWORD flags)
{
if (flags & CONTACT_FLAG_DOWN)
return "TouchBegin";
else if (flags & CONTACT_FLAG_UPDATE)
return "TouchUpdate";
else if (flags & CONTACT_FLAG_UP)
return "TouchEnd";
else
return "TouchUnknown";
}
void xf_input_hide_cursor(xfContext* xfc)
{
#ifdef WITH_XCURSOR
if (!xfc->cursorHidden)
{
XcursorImage ci;
XcursorPixel xp = 0;
static Cursor nullcursor = None;
xf_lock_x11(xfc, FALSE);
ZeroMemory(&ci, sizeof(ci));
ci.version = XCURSOR_IMAGE_VERSION;
ci.size = sizeof(ci);
ci.width = ci.height = 1;
ci.xhot = ci.yhot = 0;
ci.pixels = &xp;
nullcursor = XcursorImageLoadCursor(xfc->display, &ci);
if ((xfc->window) && (nullcursor != None))
XDefineCursor(xfc->display, xfc->window->handle, nullcursor);
xfc->cursorHidden = TRUE;
xf_unlock_x11(xfc, FALSE);
}
#endif
}
void xf_input_show_cursor(xfContext* xfc)
{
#ifdef WITH_XCURSOR
xf_lock_x11(xfc, FALSE);
if (xfc->cursorHidden)
{
if (xfc->window)
{
if (!xfc->pointer)
XUndefineCursor(xfc->display, xfc->window->handle);
else
XDefineCursor(xfc->display, xfc->window->handle, xfc->pointer->cursor);
}
xfc->cursorHidden = FALSE;
}
xf_unlock_x11(xfc, FALSE);
#endif
}
int xf_input_touch_remote(xfContext* xfc, XIDeviceEvent* event, int evtype)
{
int x, y;
int touchId;
int contactId;
RdpeiClientContext* rdpei = xfc->rdpei;
if (!rdpei)
return 0;
xf_input_hide_cursor(xfc);
touchId = event->detail;
x = (int) event->event_x;
y = (int) event->event_y;
if (evtype == XI_TouchBegin)
{
WLog_DBG(TAG, "TouchBegin: %d", touchId);
contactId = rdpei->TouchBegin(rdpei, touchId, x, y);
}
else if (evtype == XI_TouchUpdate)
{
WLog_DBG(TAG, "TouchUpdate: %d", touchId);
contactId = rdpei->TouchUpdate(rdpei, touchId, x, y);
}
else if (evtype == XI_TouchEnd)
{
WLog_DBG(TAG, "TouchEnd: %d", touchId);
contactId = rdpei->TouchEnd(rdpei, touchId, x, y);
}
return 0;
}
int xf_input_event(xfContext* xfc, XIDeviceEvent* event, int evtype)
{
xf_input_show_cursor(xfc);
switch (evtype)
{
case XI_ButtonPress:
xf_generic_ButtonPress(xfc, (int) event->event_x, (int) event->event_y,
event->detail, event->event, xfc->remote_app);
break;
case XI_ButtonRelease:
xf_generic_ButtonRelease(xfc, (int) event->event_x, (int) event->event_y,
event->detail, event->event, xfc->remote_app);
break;
case XI_Motion:
xf_generic_MotionNotify(xfc, (int) event->event_x, (int) event->event_y,
event->detail, event->event, xfc->remote_app);
break;
}
return 0;
}
int xf_input_handle_event_remote(xfContext* xfc, XEvent* event)
{
XGenericEventCookie* cookie = &event->xcookie;
XGetEventData(xfc->display, cookie);
if ((cookie->type == GenericEvent) && (cookie->extension == xfc->XInputOpcode))
{
switch (cookie->evtype)
{
case XI_TouchBegin:
xf_input_touch_remote(xfc, cookie->data, XI_TouchBegin);
break;
case XI_TouchUpdate:
xf_input_touch_remote(xfc, cookie->data, XI_TouchUpdate);
break;
case XI_TouchEnd:
xf_input_touch_remote(xfc, cookie->data, XI_TouchEnd);
break;
default:
xf_input_event(xfc, cookie->data, cookie->evtype);
break;
}
}
XFreeEventData(xfc->display,cookie);
return 0;
}
#else
int xf_input_init(xfContext* xfc, Window window)
{
return 0;
}
#endif
int xf_input_handle_event(xfContext* xfc, XEvent* event)
{
#ifdef WITH_XI
if (xfc->settings->MultiTouchInput)
{
return xf_input_handle_event_remote(xfc, event);
}
if (xfc->settings->MultiTouchGestures)
{
return xf_input_handle_event_local(xfc, event);
}
#endif
return 0;
}