572 lines
11 KiB
C
572 lines
11 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* X11 Input
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*
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* Copyright 2013 Corey Clayton <can.of.tuna@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef WITH_XI
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#include <X11/extensions/XInput2.h>
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#endif
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#include <math.h>
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#include "xf_input.h"
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#ifdef WITH_XI
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#define MAX_CONTACTS 2
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#define PAN_THRESHOLD 50
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#define ZOOM_THRESHOLD 10
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#define MIN_FINGER_DIST 5
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typedef struct touch_contact
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{
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int id;
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int count;
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double pos_x;
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double pos_y;
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double last_x;
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double last_y;
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} touchContact;
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touchContact contacts[MAX_CONTACTS];
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int active_contacts;
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int lastEvType;
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XIDeviceEvent lastEvent;
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double firstDist = -1.0;
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double lastDist;
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double z_vector;
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double px_vector;
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double py_vector;
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int xinput_opcode;
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int scale_cnt;
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int xf_input_init(xfInfo* xfi, Window window)
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{
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int i, j;
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int ndevices;
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int major = 2;
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int minor = 2;
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Status xstatus;
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XIEventMask evmask;
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XIDeviceInfo* info;
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int opcode, event, error;
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unsigned char mask[XIMaskLen(XI_LASTEVENT)];
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active_contacts = 0;
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ZeroMemory(contacts, sizeof(touchContact) * MAX_CONTACTS);
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if (!XQueryExtension(xfi->display, "XInputExtension", &opcode, &event, &error))
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{
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printf("XInput extension not available.\n");
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return -1;
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}
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xfi->XInputOpcode = opcode;
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XIQueryVersion(xfi->display, &major, &minor);
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if (major * 1000 + minor < 2002)
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{
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printf("Server does not support XI 2.2\n");
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return -1;
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}
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info = XIQueryDevice(xfi->display, XIAllDevices, &ndevices);
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for (i = 0; i < ndevices; i++)
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{
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XIDeviceInfo* dev = &info[i];
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for (j = 0; j < dev->num_classes; j++)
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{
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XIAnyClassInfo* class = dev->classes[j];
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//XITouchClassInfo* t = (XITouchClassInfo*) class;
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if (class->type != XITouchClass)
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continue;
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}
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}
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evmask.mask = mask;
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evmask.mask_len = sizeof(mask);
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ZeroMemory(mask, sizeof(mask));
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evmask.deviceid = XIAllDevices;
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XISetMask(mask, XI_TouchBegin);
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XISetMask(mask, XI_TouchUpdate);
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XISetMask(mask, XI_TouchEnd);
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xstatus = XISelectEvents(xfi->display, window, &evmask, 1);
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z_vector = 0;
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px_vector = 0;
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py_vector = 0;
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return -1;
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}
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//BOOL xf_input_is_duplicate(XIDeviceEvent* event)
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BOOL xf_input_is_duplicate(XGenericEventCookie* cookie)
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{
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XIDeviceEvent* event;
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event = cookie->data;
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if ( (lastEvent.time == event->time) &&
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(lastEvType == cookie->evtype) &&
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(lastEvent.detail == event->detail) &&
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(lastEvent.event_x == event->event_x) &&
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(lastEvent.event_y == event->event_y) )
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{
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return TRUE;
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}
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return FALSE;
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}
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//void xf_input_save_last_event(XIDeviceEvent* event)
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void xf_input_save_last_event(XGenericEventCookie* cookie)
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{
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XIDeviceEvent* event;
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event = cookie->data;
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lastEvType = cookie->evtype;
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lastEvent.time = event->time;
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lastEvent.detail = event->detail;
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lastEvent.event_x = event->event_x;
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lastEvent.event_y = event->event_y;
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}
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void xf_input_detect_pan(xfInfo* xfi)
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{
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double dx[2];
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double dy[2];
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double px;
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double py;
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double dist_x;
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double dist_y;
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dx[0] = contacts[0].pos_x - contacts[0].last_x;
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dx[1] = contacts[1].pos_x - contacts[1].last_x;
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dy[0] = contacts[0].pos_y - contacts[0].last_y;
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dy[1] = contacts[1].pos_y - contacts[1].last_y;
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px = fabs(dx[0]) < fabs(dx[1]) ? dx[0] : dx[1];
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py = fabs(dy[0]) < fabs(dy[1]) ? dy[0] : dy[1];
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px_vector += px;
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py_vector += py;
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dist_x = fabs(contacts[0].pos_x - contacts[1].pos_x);
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dist_y = fabs(contacts[0].pos_y - contacts[1].pos_y);
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//only pan in x if dist_y is greater than something
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if(dist_y > MIN_FINGER_DIST)
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{
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if(px_vector > PAN_THRESHOLD)
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{
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xfi->offset_x += 5;
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if(xfi->offset_x > 0)
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xfi->offset_x = 0;
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xf_transform_window(xfi);
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xf_draw_screen_scaled(xfi, 0, 0, 0, 0, FALSE);
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px_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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else if(px_vector < -PAN_THRESHOLD)
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{
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xfi->offset_x -= 5;
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xf_transform_window(xfi);
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xf_draw_screen_scaled(xfi, 0, 0, 0, 0, FALSE);
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px_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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}
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if(dist_x > MIN_FINGER_DIST)
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{
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if(py_vector > PAN_THRESHOLD)
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{
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xfi->offset_y += 5;
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if(xfi->offset_y > 0)
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xfi->offset_y = 0;
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xf_transform_window(xfi);
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xf_draw_screen_scaled(xfi, 0, 0, 0, 0, FALSE);
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py_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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else if(py_vector < -PAN_THRESHOLD)
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{
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xfi->offset_y -= 5;
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xf_transform_window(xfi);
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xf_draw_screen_scaled(xfi, 0, 0, 0, 0, FALSE);
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py_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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}
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}
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void xf_input_detect_pinch(xfInfo* xfi)
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{
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double dist;
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double zoom;
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double delta;
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if (active_contacts != 2)
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{
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firstDist = -1.0;
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return;
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}
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/* first calculate the distance */
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dist = sqrt(pow(contacts[1].pos_x - contacts[0].last_x, 2.0) +
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pow(contacts[1].pos_y - contacts[0].last_y, 2.0));
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/* if this is the first 2pt touch */
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if (firstDist <= 0)
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{
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firstDist = dist;
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lastDist = firstDist;
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scale_cnt = 0;
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z_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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else
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{
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delta = lastDist - dist;
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if(delta > 1.0)
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delta = 1.0;
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if(delta < -1.0)
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delta = -1.0;
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/* compare the current distance to the first one */
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zoom = (dist / firstDist);
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z_vector += delta;
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// printf("%.2f = %.2f - %.2f\t(%.2f)\n", delta, lastDist, dist, z_vector);
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lastDist = dist;
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if (z_vector > ZOOM_THRESHOLD)
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{
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xfi->scale -= 0.05;
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if (xfi->scale < 0.8)
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xfi->scale = 0.8;
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xfi->currentWidth = xfi->originalWidth * xfi->scale;
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xfi->currentHeight = xfi->originalHeight * xfi->scale;
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xf_transform_window(xfi);
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IFCALL(xfi->client->OnResizeWindow, xfi->instance, xfi->originalWidth * xfi->scale, xfi->originalHeight * xfi->scale);
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xf_draw_screen_scaled(xfi, 0, 0, 0, 0, FALSE);
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z_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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if (z_vector < -ZOOM_THRESHOLD)
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{
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xfi->scale += 0.05;
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if (xfi->scale > 1.2)
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xfi->scale = 1.2;
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xfi->currentWidth = xfi->originalWidth * xfi->scale;
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xfi->currentHeight = xfi->originalHeight * xfi->scale;
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xf_transform_window(xfi);
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IFCALL(xfi->client->OnResizeWindow, xfi->instance, xfi->originalWidth * xfi->scale, xfi->originalHeight * xfi->scale);
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xf_draw_screen_scaled(xfi, 0, 0, 0, 0, FALSE);
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z_vector = 0;
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px_vector = 0;
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py_vector = 0;
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z_vector = 0;
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}
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}
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}
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void xf_input_touch_begin(xfInfo* xfi, XIDeviceEvent* event)
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{
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int i;
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/*
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printf("id: %d active: %d x:%.2f y:%.2f BEGIN\n",
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event->detail,
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active_contacts,
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event->event_x,
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event->event_y
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);
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*/
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if(active_contacts == MAX_CONTACTS)
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printf("Houston, we have a problem!\n\n");
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for (i = 0; i < MAX_CONTACTS; i++)
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{
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if (contacts[i].id == 0)
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{
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contacts[i].id = event->detail;
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contacts[i].count = 1;
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contacts[i].pos_x = event->event_x;
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contacts[i].pos_y = event->event_y;
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active_contacts++;
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break;
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}
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}
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}
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void xf_input_touch_update(xfInfo* xfi, XIDeviceEvent* event)
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{
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int i;
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/*
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printf("id: %d active: %d x:%.2f y:%.2f UPDATE\n",
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event->detail,
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active_contacts,
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event->event_x,
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event->event_y
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);
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*/
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for (i = 0; i < MAX_CONTACTS; i++)
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{
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if (contacts[i].id == event->detail)
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{
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contacts[i].count++;
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contacts[i].last_x = contacts[i].pos_x;
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contacts[i].last_y = contacts[i].pos_y;
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contacts[i].pos_x = event->event_x;
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contacts[i].pos_y = event->event_y;
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xf_input_detect_pinch(xfi);
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xf_input_detect_pan(xfi);
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break;
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}
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}
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}
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void xf_input_touch_end(xfInfo* xfi, XIDeviceEvent* event)
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{
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int i;
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/* printf("id: %d active: %d x:%.2f y:%.2f END\n",
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event->detail,
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active_contacts,
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event->event_x,
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event->event_y
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);
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*/
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for (i = 0; i < MAX_CONTACTS; i++)
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{
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if (contacts[i].id == event->detail)
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{
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contacts[i].id = 0;
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contacts[i].count = 0;
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//contacts[i].pos_x = (int)event->event_x;
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//contacts[i].pos_y = (int)event->event_y;
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active_contacts--;
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break;
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}
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}
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}
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int xf_input_handle_event_local(xfInfo* xfi, XEvent* event)
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{
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XGenericEventCookie* cookie = &event->xcookie;
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XGetEventData(xfi->display, cookie);
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if ((cookie->type == GenericEvent) && (cookie->extension == xfi->XInputOpcode))
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{
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switch (cookie->evtype)
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{
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case XI_TouchBegin:
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if (xf_input_is_duplicate(cookie) == FALSE)
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xf_input_touch_begin(xfi, cookie->data);
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xf_input_save_last_event(cookie);
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break;
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case XI_TouchUpdate:
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if (xf_input_is_duplicate(cookie) == FALSE)
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xf_input_touch_update(xfi, cookie->data);
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xf_input_save_last_event(cookie);
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break;
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case XI_TouchEnd:
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if (xf_input_is_duplicate(cookie) == FALSE)
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xf_input_touch_end(xfi, cookie->data);
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xf_input_save_last_event(cookie);
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break;
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default:
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printf("unhandled xi type= %d\n", cookie->evtype);
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break;
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}
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}
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XFreeEventData(xfi->display,cookie);
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return 0;
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}
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int xf_input_touch_begin_remote(xfInfo* xfi, XIDeviceEvent* event)
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{
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return 0;
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}
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int xf_input_touch_update_remote(xfInfo* xfi, XIDeviceEvent* event)
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{
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return 0;
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}
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int xf_input_touch_end_remote(xfInfo* xfi, XIDeviceEvent* event)
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{
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return 0;
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}
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int xf_input_handle_event_remote(xfInfo* xfi, XEvent* event)
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{
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XGenericEventCookie* cookie = &event->xcookie;
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XGetEventData(xfi->display, cookie);
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if ((cookie->type == GenericEvent) && (cookie->extension == xfi->XInputOpcode))
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{
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switch (cookie->evtype)
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{
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case XI_TouchBegin:
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xf_input_touch_begin_remote(xfi, cookie->data);
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break;
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case XI_TouchUpdate:
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xf_input_touch_update_remote(xfi, cookie->data);
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break;
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case XI_TouchEnd:
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xf_input_touch_end_remote(xfi, cookie->data);
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break;
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default:
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break;
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}
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}
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XFreeEventData(xfi->display,cookie);
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return 0;
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}
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#else
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int xf_input_init(xfInfo* xfi, Window window)
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{
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return 0;
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}
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#endif
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void xf_process_rdpei_event(xfInfo* xfi, wMessage* event)
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{
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switch (GetMessageType(event->id))
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{
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case RdpeiChannel_ServerReady:
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break;
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case RdpeiChannel_SuspendTouch:
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break;
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case RdpeiChannel_ResumeTouch:
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break;
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}
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}
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int xf_input_handle_event(xfInfo* xfi, XEvent* event)
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{
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#ifdef WITH_XI
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if (xfi->settings->MultiTouchInput)
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{
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return xf_input_handle_event_remote(xfi, event);
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}
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if (1)
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return xf_input_handle_event_local(xfi, event);
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#endif
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return 0;
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}
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