/* $OpenBSD: xtsscale.c,v 1.6 2007/08/31 21:53:55 matthieu Exp $ */ /* * Copyright (c) 2007 Robert Nagy * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define FONT_NAME "mono" #define FONT_SIZE 14 #define Background "white" #define TouchCross "black" #define PromptText "black" #define Error "red" /* 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 width, height; /* window size */ char *progname; int evfd; int cx[5], cy[5]; int x[5], y[5]; static char *prompt_message[] = { "TOUCH SCREEN CALIBRATION", "Press on the cross hairs please...", NULL }; static char *error_message[] = { "Not accurate enough.", "Try again...", NULL }; void get_events(int i) { ssize_t len; int down; struct wscons_event ev; down = 0; x[i] = y[i] = -1; while (down || x[i] == -1 || y[i] == -1) { len = read(evfd, &ev, sizeof(ev)); if (len != 16) break; switch (ev.type) { case WSCONS_EVENT_MOUSE_DOWN: down = 1; break; case WSCONS_EVENT_MOUSE_UP: down = 0; break; case WSCONS_EVENT_MOUSE_ABSOLUTE_X: if (down) x[i] = ev.value; break; case WSCONS_EVENT_MOUSE_ABSOLUTE_Y: if (down) y[i] = ev.value; break; default: break; } } } void cleanup_exit() { XUngrabServer(display); XUngrabKeyboard(display, CurrentTime); XCloseDisplay(display); close(evfd); } 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() { 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 main(int argc, char *argv[], char *env[]) { char *display_name = NULL; XSetWindowAttributes xswa; int i = 0, orawmode; double a, a1, a2, b, b1, b2, xerr, yerr; struct wsmouse_calibcoords wmcoords; extern char *__progname; /* Crosshair placement */ int cpx[] = { 0, 0, 1, 1, 1 }; int cpy[] = { 0, 1, 0, 0, 1 }; if (argc != 2) { fprintf(stderr, "usage: %s \n", __progname); return 1; } if ((evfd = open(argv[1], O_RDONLY)) == -1) err(1, "open()"); /* connect to X server */ if ((display = XOpenDisplay(display_name)) == NULL) { fprintf(stderr, "%s: cannot connect to X server %s\n", progname, XDisplayName(display_name)); close(evfd); exit(1); } screen = DefaultScreen(display); root = RootWindow(display, screen); /* setup window attributes */ xswa.override_redirect = True; xswa.background_pixel = BlackPixel(display, screen); xswa.event_mask = ExposureMask | KeyPressMask; xswa.cursor = create_empty_cursor(); /* get screen size from display structure macro */ width = DisplayWidth(display, screen); height = DisplayHeight(display, screen); win = XCreateWindow(display, RootWindow(display, screen), 0, 0, width, height, 0, CopyFromParent, InputOutput, CopyFromParent, CWOverrideRedirect | CWBackPixel | CWEventMask | CWCursor, &xswa); render_init(); XMapWindow(display, win); XGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime); XGrabServer(display); XClearWindow(display, win); if (ioctl(evfd, WSMOUSEIO_GCALIBCOORDS, &wmcoords) < 0) err(1, "WSMOUSEIO_GCALIBCOORDS"); orawmode = wmcoords.samplelen; wmcoords.samplelen = 1; if (ioctl(evfd, WSMOUSEIO_SCALIBCOORDS, &wmcoords) < 0) err(1, "WSMOUSEIO_SCALIBCOORDS"); calib: XftDrawRect(draw, &bg, 0, 0, width, height); for (i = 0; i < 5; i++) { draw_graphics(cpx[i], cpy[i], i); XFlush(display); get_events(i); XftDrawRect(draw, &bg, 0, 0, width, height); } /* Check if X and Y should be swapped */ if (fabs(x[0] - x[1]) > fabs(y[0] - y[1])) { wmcoords.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, "X error (%.2f) too high, try again\n", fabs(xerr)); goto err; } wmcoords.minx = (int) (b + 0.5); wmcoords.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, "Y error (%.2f) too high, try again\n", fabs(yerr)); goto err; } wmcoords.miny = (int) (b + 0.5); wmcoords.maxy = (int) (a * height + b + 0.5); XFlush(display); wmcoords.samplelen = orawmode; wmcoords.resx = width; wmcoords.resy = height; if (ioctl(evfd, WSMOUSEIO_SCALIBCOORDS, &wmcoords) < 0) err(1, "WSMOUSEIO_SCALIBCOORDS"); printf("mouse.scale=%d,%d,%d,%d,%d,%d,%d\n", wmcoords.minx, wmcoords.maxx, wmcoords.miny, wmcoords.maxy, wmcoords.swapxy, wmcoords.resx, wmcoords.resy); return 0; err: draw_text(error_message, &errorColor); XFlush(display); sleep(2); goto calib; }