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xenocara/app/xtsscale/xtsscale.c

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/* $OpenBSD: xtsscale.c,v 1.24 2019/02/11 07:10:45 matthieu Exp $ */
/*
* Copyright (c) 2007 Robert Nagy <robert@openbsd.org>
* Copyright (c) 2009,2011 Matthieu Herrb <matthieu@herrb.eu>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
* PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright 1996 by Frederic Lepied, France. <Frederic.Lepied@sugix.frmug.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the authors not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The authors make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
*/
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xft/Xft.h>
#include <X11/extensions/Xrender.h>
#include <X11/extensions/XInput.h>
#include <X11/extensions/Xrandr.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <ws-properties.h>
#define FONT_NAME "mono"
#define FONT_SIZE 14
#define Background "white"
#define TouchCross "black"
#define PromptText "black"
#define Error "red"
#define INVALID_EVENT_TYPE -1
static int motion_type = INVALID_EVENT_TYPE;
static int button_press_type = INVALID_EVENT_TYPE;
static int button_release_type = INVALID_EVENT_TYPE;
static int proximity_in_type = INVALID_EVENT_TYPE;
static int proximity_out_type = INVALID_EVENT_TYPE;
int has_xrandr = False;
int has_xrandr_1_2 = False;
int has_xrandr_1_3 = False;
int has_xinerama = False;
Atom prop_calibration, prop_swap;
/* where the calibration points are placed */
#define SCREEN_DIVIDE 16
#define SCREEN_MAX 0x800
#define M_POINT (SCREEN_MAX/SCREEN_DIVIDE)
int MARK_POINT[] = {M_POINT, SCREEN_MAX - 1 - M_POINT};
int touched = 0;
char *deviceName;
Display *display;
int screen;
Window root;
Window win;
XftFont *font;
XftColor cross, errorColor, promptColor, bg;
XftDraw *draw;
unsigned int xpos, ypos, width, height; /* window size */
Bool interrupted = False;
Bool verbose = False;
int cx[5], cy[5];
int x[5], y[5];
extern char * __progname;
struct { int minx, maxx, miny, maxy, swapxy, resx, resy; } calib, old_calib;
Bool old_swap;
static char *prompt_message[] = {
"TOUCH SCREEN CALIBRATION",
"Press on the crosshairs please...",
"Use the ESC key to cancel.",
NULL
};
static char *error_message[] = {
"Not accurate enough.",
"Try again...",
NULL
};
void
cleanup_exit(XDevice *device)
{
long values[4];
values[0] = old_calib.minx;
values[1] = old_calib.maxx;
values[2] = old_calib.miny;
values[3] = old_calib.maxy;
XChangeDeviceProperty(display, device, prop_calibration,
XA_INTEGER, 32, PropModeReplace, (unsigned char *)values, 4);
XChangeDeviceProperty(display, device, prop_swap,
XA_INTEGER, 8, PropModeReplace, (unsigned char *)&old_swap, 1);
XCloseDevice(display, device);
XUngrabServer(display);
XUngrabKeyboard(display, CurrentTime);
XCloseDisplay(display);
exit(1);
}
void
render_init(void)
{
font = XftFontOpen(display, screen,
XFT_FAMILY, XftTypeString, FONT_NAME,
XFT_SIZE, XftTypeInteger, FONT_SIZE,
NULL);
if (!XftColorAllocName(display, XDefaultVisual(display, screen),
DefaultColormap(display, screen), TouchCross, &cross)) {
fprintf(stderr, "Cannot get color");
exit(2);
}
if (!XftColorAllocName(display, XDefaultVisual(display, screen),
DefaultColormap(display, screen), PromptText, &promptColor)) {
fprintf(stderr, "Cannot get color");
exit(2);
}
if (!XftColorAllocName(display, XDefaultVisual(display, screen),
DefaultColormap(display, screen), Background, &bg)) {
fprintf(stderr, "Cannot get bg color");
exit(2);
}
if (!XftColorAllocName(display, XDefaultVisual(display, screen),
DefaultColormap(display, screen), Error, &errorColor)) {
fprintf(stderr, "Cannot get color");
exit(2);
}
draw = XftDrawCreate(display, win, DefaultVisual(display, screen),
DefaultColormap(display, screen));
}
void
draw_point(int x, int y, int width, int size, XftColor *color)
{
XPointDouble p[4];
p[0].x = x - size;
p[0].y = y - 1;
p[1].x = x - size;
p[1].y = y + 1;
p[2].x = x + size;
p[2].y = y + 1;
p[3].x = x + size;
p[3].y = y - 1;
XRenderCompositeDoublePoly(display, PictOpOver,
XftDrawSrcPicture(draw, color),
XftDrawPicture(draw),
XRenderFindStandardFormat(display, PictStandardA8),
0, 0, 0, 0, p, 4, 0);
p[0].x = x - 1;
p[0].y = y - size;
p[1].x = x + 1;
p[1].y = y - size;
p[2].x = x + 1;
p[2].y = y + size;
p[3].x = x - 1;
p[3].y = y + size;
XRenderCompositeDoublePoly(display, PictOpOver,
XftDrawSrcPicture(draw, color),
XftDrawPicture(draw),
XRenderFindStandardFormat(display, PictStandardA8),
0, 0, 0, 0, p, 4, 0);
}
void
draw_text(char **message, XftColor *color)
{
int len;
int i, x, y;
XGlyphInfo extents;
i = 0;
y = height / 3;
while (message[i] != NULL) {
len = strlen(message[i]);
XftTextExtents8(display, font, message[i], len, &extents);
x = (width - extents.width)/2;
XftDrawString8(draw, color, font, x, y, message[i], len);
y += extents.height * 1.5;
i++;
}
}
void
draw_graphics(int i, int j, int n)
{
draw_text(prompt_message, &promptColor);
if (n == 2) {
cx[n] = width / 2;
cy[n] = height / 2;
} else {
cx[n] = (MARK_POINT[i] * width) / SCREEN_MAX;
cy[n] = (MARK_POINT[j] * height) / SCREEN_MAX;
}
draw_point(cx[n], cy[n], width / 200, width / 64, &cross);
}
Cursor
create_empty_cursor(void)
{
char nothing[] = {0};
XColor nullcolor;
Pixmap src = XCreateBitmapFromData(display, root, nothing, 1, 1);
Pixmap msk = XCreateBitmapFromData(display, root, nothing, 1, 1);
Cursor mcyursor = XCreatePixmapCursor(display, src, msk,
&nullcolor, &nullcolor, 0, 0);
XFreePixmap(display, src);
XFreePixmap(display, msk);
return mcyursor;
}
int
check_device(XDeviceInfo *info)
{
XDevice *device;
Atom type;
int format;
unsigned long nitems, nbytes;
unsigned char *retval;
if (verbose)
printf("Checking device %lu: %s...", info->id, info->name);
device = XOpenDevice(display, info->id);
XGetDeviceProperty(display,
device, prop_calibration,
0, 4, False,
XA_INTEGER, &type, &format,
&nitems, &nbytes, &retval);
XCloseDevice(display, device);
if (nitems != 4) {
if (verbose)
printf("can't be calibrated\n");
return False;
}
if (verbose)
printf("can be calibrated\n");
return True;
}
XDeviceInfo*
find_device_info(char *name)
{
XDeviceInfo *devices;
XDeviceInfo *found = NULL;
int i, max_id;
int num_devices, num_found;
Bool is_id = True;
XID id = (XID)-1;
const char *errstr;
devices = XListInputDevices(display, &num_devices);
max_id = 0;
for (i = 0; i < num_devices; i++)
if (devices[i].id > max_id)
max_id = devices[i].id;
if (name != NULL) {
for(i = 0; i < strlen(name); i++) {
if (!isdigit(name[i])) {
is_id = False;
break;
}
}
if (is_id) {
id = strtonum(name, 0, max_id, &errstr);
if (errstr != NULL) {
fprintf(stderr, "Invalid device id %s: %s\n",
name, errstr);
exit(1);
}
}
}
num_found = 0;
for(i = 0; i < num_devices; i++) {
if (devices[i].use != IsXExtensionPointer)
continue;
if (name == NULL) {
if (check_device(&devices[i])) {
found = &devices[i];
num_found++;
}
continue;
}
if ((!is_id && strcmp(devices[i].name, name) == 0) ||
(is_id && devices[i].id == id)) {
found = &devices[i];
num_found++;
}
}
if (num_found > 1) {
fprintf(stderr,
"Error: found multiple matching devices.\n"
"To ensure the correct one is selected, please use "
"the device ID instead.\n");
return NULL;
}
return found;
}
static int
register_events(XDeviceInfo *info, XDevice *device,
Bool handle_proximity)
{
int number = 0; /* number of events registered */
XEventClass event_list[7];
int i;
unsigned long screen;
XInputClassInfo *ip;
screen = DefaultScreen(display);
if (device->num_classes > 0) {
for (ip = device->classes, i=0; i<info->num_classes;
ip++, i++) {
switch (ip->input_class) {
case ButtonClass:
DeviceButtonPress(device, button_press_type,
event_list[number]);
number++;
DeviceButtonRelease(device,
button_release_type, event_list[number]);
number++;
break;
case ValuatorClass:
DeviceMotionNotify(device, motion_type,
event_list[number]); number++;
if (handle_proximity) {
ProximityIn(device, proximity_in_type,
event_list[number]); number++;
ProximityOut(device,
proximity_out_type,
event_list[number]); number++;
}
break;
default:
fprintf(stderr,
"Found unknown device class %d\n",
ip->input_class);
break;
}
}
if (XSelectExtensionEvent(display, root, event_list, number)) {
fprintf(stderr, "Error selecting extended events\n");
return 0;
}
}
return number;
}
static Bool
get_events(int i)
{
XEvent Event;
XDeviceMotionEvent *motion = (XDeviceMotionEvent *) &Event;
int j, a;
char c;
x[i] = y[i] = -1;
while (1) {
XNextEvent(display, &Event);
if (Event.type == motion_type) {
for (j = 0; j < motion->axes_count; j++) {
a = motion->first_axis + j;
switch (a) {
case 0:
x[i] = motion->axis_data[j];
break;
case 1:
y[i] = motion->axis_data[j];
break;
default:
fprintf(stderr,
"Unknown axis %d\n", a);
}
}
} else if (Event.type == button_release_type) {
if (x[i] != -1 && y[i] != -1)
break;
} else if (Event.type == KeyPress) {
a = XLookupString(&Event.xkey, &c, 1, NULL, NULL);
if ((a == 1) && ((c == 'q') || (c == 'Q') ||
(c == '\03') || (c == '\033'))) {
interrupted++;
return False;
}
}
}
if (verbose)
printf("x[%d] = %d y[%d] = %d\n", i, x[i], i, y[i]);
return True;
}
int
uncalibrate(XDevice *device)
{
Atom type;
int format;
unsigned long nitems, nbytes;
long values[4] = { 0, 32767, 0, 32767 }; /* uncalibrated */
Bool swap = 0;
unsigned char *retval;
/* Save old values */
XGetDeviceProperty(display, device, prop_calibration, 0,
4, False, XA_INTEGER, &type, &format, &nitems,
&nbytes, &retval);
if (type != XA_INTEGER) {
fprintf(stderr, "Device property \"%s\": invalid type %s\n",
WS_PROP_CALIBRATION, XGetAtomName(display, type));
return -1;
}
if (nitems != 4 && nitems != 0) {
fprintf(stderr, "Device property \"%s\": "
"invalid number of items %ld\n",
WS_PROP_CALIBRATION, nitems);
return -1;
}
old_calib.minx = *(long *)retval;
old_calib.maxx = *((long *)retval + 1);
old_calib.miny = *((long *)retval + 2);
old_calib.maxy = *((long *)retval + 3);
XFree(retval);
XGetDeviceProperty(display, device, prop_swap, 0,
1, False, XA_INTEGER, &type, &format, &nitems,
&nbytes, &retval);
old_swap = *(Bool *)retval;
XFree(retval);
/* Force uncalibrated state */
XChangeDeviceProperty(display, device, prop_calibration,
XA_INTEGER, 32, PropModeReplace, (unsigned char *)values, 4);
XChangeDeviceProperty(display, device, prop_swap,
XA_INTEGER, 8, PropModeReplace, (unsigned char *)&swap, 1);
return 0;
}
void
get_xrandr_config(Display *dpy, Window root, char *name,
int *x, int *y, int *width, int *height)
{
XRRScreenResources *res;
XRROutputInfo *output_info;
XRRCrtcInfo *crtc_info;
int o, found = 0;
res = XRRGetScreenResources(dpy, root);
for (o = 0; o < res->noutput; o++) {
output_info = XRRGetOutputInfo (dpy, res, res->outputs[o]);
if (!output_info) {
fprintf(stderr,
"could not get output 0x%lx information\n",
res->outputs[o]);
exit(2);
}
if (output_info->crtc != 0) {
crtc_info = XRRGetCrtcInfo(dpy, res,
output_info->crtc);
if (!crtc_info) {
fprintf(stderr,
"%s: could not get crtc 0x%lx "
"information\n", __progname,
output_info->crtc);
exit(2);
}
printf("%s: %dx%d+%d+%d\n",
output_info->name,
crtc_info->width, crtc_info->height,
crtc_info->x, crtc_info->y);
if (!strcmp(output_info->name, name)) {
*x = crtc_info->x;
*y = crtc_info->y;
*width = crtc_info->width;
*height = crtc_info->height;
found = 1;
}
}
}
if (!found) {
fprintf(stderr, "%s: output %s not found\n", __progname, name);
exit(2);
}
}
void __dead
usage(void)
{
fprintf(stderr, "usage: xtsscale [-c][-D display]"
"[-d device][-o output]\n");
exit(2);
}
int
main(int argc, char *argv[], char *env[])
{
char *display_name = NULL;
char *device_name = NULL;
char *output_name = NULL;
XSetWindowAttributes xswa;
int i = 0;
double a, a1, a2, b, b1, b2, xerr, yerr;
int xi_opcode, event, error;
XExtensionVersion *version;
XDeviceInfo *info;
XDevice *device;
long calib_data[4];
unsigned long mask;
unsigned char swap;
int keep_cursor = 0, ch;
/* Crosshair placement */
int cpx[] = { 0, 0, 1, 1, 1 };
int cpy[] = { 0, 1, 0, 0, 1 };
while ((ch = getopt(argc, argv, "cD:d:o:v")) != -1) {
switch (ch) {
case 'c':
keep_cursor++;
break;
case 'D':
display_name = optarg;
break;
case 'd':
device_name = optarg;
break;
case 'o':
output_name = optarg;
break;
case 'v':
verbose = True;
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
/* connect to X server */
if ((display = XOpenDisplay(display_name)) == NULL) {
fprintf(stderr, "%s: cannot connect to X server %s\n",
__progname, XDisplayName(display_name));
exit(1);
}
screen = DefaultScreen(display);
root = RootWindow(display, screen);
/* get screen size from display structure macro */
xpos = 0;
ypos = 0;
width = DisplayWidth(display, screen);
height = DisplayHeight(display, screen);
if (XRRQueryExtension(display, &event, &error)) {
int major, minor;
if (XRRQueryVersion(display, &major, &minor) != True) {
fprintf(stderr, "Error querying XRandR version");
} else {
printf("XRandR extension version %d.%d present\n",
major, minor);
has_xrandr = True;
if (major > 1 || (major == 1 && minor >=2))
has_xrandr_1_2 = True;
if (major > 1 || (major == 1 && minor >=3))
has_xrandr_1_3 = True;
}
}
if (output_name != NULL) {
if (has_xrandr_1_2) {
get_xrandr_config(display, root, output_name,
&xpos, &ypos, &width, &height);
} else {
fprintf(stderr, "%s: can not specify an output "
"whithout XRandr 1.2 or later", __progname);
exit(2);
}
}
if (!XQueryExtension(display, INAME, &xi_opcode,
&event, &error)) {
fprintf(stderr, "%s: X Input extension not available.\n",
__progname);
exit(1);
}
version = XGetExtensionVersion(display, INAME);
if (version == NULL ||
version == (XExtensionVersion *)NoSuchExtension) {
fprintf(stderr, "Cannot query X Input version.\n");
exit(1);
}
XFree(version);
prop_calibration = XInternAtom(display, WS_PROP_CALIBRATION, True);
if (prop_calibration == None) {
fprintf(stderr, "Unable to find the \"%s\" device property.\n"
"There are probably no calibrable devices "
"on this system.\n", WS_PROP_CALIBRATION);
exit(1);
}
prop_swap = XInternAtom(display, WS_PROP_SWAP_AXES, True);
if (prop_swap == None) {
fprintf(stderr, "Unable to find the \"%s\" device property\n",
WS_PROP_SWAP_AXES);
exit(1);
}
info = find_device_info(device_name);
if (info == NULL) {
fprintf(stderr, "Unable to find the %s device\n",
device_name ? device_name : "default");
exit(1);
}
/* setup window attributes */
xswa.override_redirect = True;
xswa.background_pixel = BlackPixel(display, screen);
xswa.event_mask = ExposureMask | KeyPressMask;
mask = CWOverrideRedirect | CWBackPixel | CWEventMask;
if (!keep_cursor) {
xswa.cursor = create_empty_cursor();
mask |= CWCursor;
}
win = XCreateWindow(display, RootWindow(display, screen),
xpos, ypos, width, height, 0,
CopyFromParent, InputOutput, CopyFromParent,
mask, &xswa);
render_init();
XMapWindow(display, win);
XGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync,
CurrentTime);
XGrabServer(display);
XClearWindow(display, win);
if (verbose)
printf("Calibrating %s\n", info->name);
device = XOpenDevice(display, info->id);
if (!device) {
fprintf(stderr, "Unable to open the X input device \"%s\"\n",
info->name);
return 0;
}
if (!register_events(info, device, 0))
exit(1);
uncalibrate(device);
calib:
XftDrawRect(draw, &bg, 0, 0, width, height);
for (i = 0; i < 5; i++) {
draw_graphics(cpx[i], cpy[i], i);
XFlush(display);
if (!get_events(i))
break;
XftDrawRect(draw, &bg, 0, 0, width, height);
}
if (interrupted)
cleanup_exit(device);
/* Check if X and Y should be swapped */
if (abs(x[0] - x[1]) > abs(y[0] - y[1])) {
calib.swapxy = 1;
for (i = 0; i < 5; i++) {
int t = x[i];
x[i] = y[i];
y[i] = t;
}
}
/* get touch pad resolution to screen resolution ratio */
a1 = (double) (x[4] - x[0]) / (double) (cx[4] - cx[0]);
a2 = (double) (x[3] - x[1]) / (double) (cx[3] - cx[1]);
/* get the minimum pad position on the X-axis */
b1 = x[0] - a1 * cx[0];
b2 = x[1] - a2 * cx[1];
/* use the average ratio and average minimum position */
a = (a1 + a2) / 2.0;
b = (b1 + b2) / 2.0;
xerr = a * width / 2 + b - x[2];
if (fabs(xerr) > fabs(a * width * .01)) {
fprintf(stderr, "Calibration problem: X axis error (%.2f) too high, try again\n",
fabs(xerr));
goto err;
}
calib.minx = (int) (b + 0.5);
calib.maxx = (int) (a * width + b + 0.5);
/* get touch pad resolution to screen resolution ratio */
a1 = (double) (y[4] - y[0]) / (double) (cy[4] - cy[0]);
a2 = (double) (y[3] - y[1]) / (double) (cy[3] - cy[1]);
/* get the minimum pad position on the Y-axis */
b1 = y[0] - a1 * cy[0];
b2 = y[1] - a2 * cy[1];
/* use the average ratio and average minimum position */
a = (a1 + a2) / 2.0;
b = (b1 + b2) / 2.0;
yerr = a * height / 2 + b - y[2];
if (fabs(yerr) > fabs(a * height * 0.01)) {
fprintf(stderr, "Calibration problem: Y axis error (%.2f) too high, try again\n",
fabs(yerr));
goto err;
}
calib.miny = (int) (b + 0.5);
calib.maxy = (int) (a * height + b + 0.5);
XFlush(display);
calib.resx = width;
calib.resy = height;
/* Send new values to the X server */
calib_data[0] = calib.minx;
calib_data[1] = calib.maxx;
calib_data[2] = calib.miny;
calib_data[3] = calib.maxy;
XChangeDeviceProperty(display, device, prop_calibration,
XA_INTEGER, 32, PropModeReplace, (unsigned char *)calib_data, 4);
swap = calib.swapxy;
XChangeDeviceProperty(display, device, prop_swap,
XA_INTEGER, 8, PropModeReplace, (unsigned char *)&swap, 1);
XCloseDevice(display, device);
XCloseDisplay(display);
/* And print them for storage in wsconsctl.conf */
printf("mouse.scale=%d,%d,%d,%d,%d,%d,%d\n",
calib.minx, calib.maxx,
calib.miny, calib.maxy,
calib.swapxy,
calib.resx, calib.resy);
return 0;
err:
draw_text(error_message, &errorColor);
XFlush(display);
sleep(2);
goto calib;
}
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