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Check in new file for select tests
* tests/select_helper_multiple.c: New file.
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hujianwei
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tests/select_helper_multiple.c
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245
tests/select_helper_multiple.c
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/* Tests for the Wayland compositor running on the X server.
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Copyright (C) 2022 to various contributors.
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This file is part of 12to11.
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12to11 is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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12to11 is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with 12to11. If not, see <https://www.gnu.org/licenses/>. */
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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/* select_helper_multiple.c -- Perform a request for multiple
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selections.
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There must be at least three arguments: the name of the display,
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the timestamp at which the selection was acquired, and the
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target(s). */
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/* The display connected to. */
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static Display *display;
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/* The selection transfer window. */
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static Window selection_transfer_window;
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/* Various atoms. */
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static Atom CLIPBOARD, INCR, MULTIPLE, ATOM_PAIR, *target_atoms;
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static void
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wait_for_selection_notify (XEvent *event)
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{
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while (true)
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{
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XNextEvent (display, event);
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if (event->type == SelectionNotify
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&& (event->xselection.requestor
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== selection_transfer_window)
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&& (event->xselection.selection
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== CLIPBOARD)
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&& (event->xselection.property
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== MULTIPLE)
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&& (event->xselection.target
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== MULTIPLE))
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return;
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}
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}
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static void
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wait_for_new_value (XEvent *event, Atom property)
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{
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while (true)
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{
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XNextEvent (display, event);
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if (event->type == PropertyNotify
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&& event->xproperty.atom == property
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&& event->xproperty.state == PropertyNewValue)
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return;
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}
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}
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static size_t
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get_size_for_format (int format)
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{
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switch (format)
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{
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case 32:
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return sizeof (long);
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case 16:
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return sizeof (short int);
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case 8:
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return sizeof (char);
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}
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/* Should not actually happen. */
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return 0;
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}
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int
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main (int argc, char **argv)
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{
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XSetWindowAttributes attrs;
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unsigned long flags, timestamp;
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char *atom_names[4];
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Atom atoms[4], actual_type, property, *parameters;
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XEvent event;
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int actual_format, i;
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unsigned long nitems, bytes_after;
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unsigned char *data;
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if (argc < 4)
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/* Not enough arguments were specified. */
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return 1;
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display = XOpenDisplay (argv[1]);
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if (!display)
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return 1;
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/* Make the window used to transfer selection data. */
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attrs.override_redirect = True;
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attrs.event_mask = PropertyChangeMask;
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flags = CWEventMask | CWOverrideRedirect;
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selection_transfer_window
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= XCreateWindow (display, DefaultRootWindow (display),
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-1, -1, 1, 1, 0, CopyFromParent, InputOnly,
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CopyFromParent, flags, &attrs);
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/* Get the time. */
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timestamp = strtoul (argv[2], NULL, 10);
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atom_names[0] = (char *) "CLIPBOARD";
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atom_names[1] = (char *) "INCR";
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atom_names[2] = (char *) "MULTIPLE";
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atom_names[3] = (char *) "ATOM_PAIR";
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XInternAtoms (display, atom_names, 4, False, atoms);
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CLIPBOARD = atoms[0];
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INCR = atoms[1];
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MULTIPLE = atoms[2];
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ATOM_PAIR = atoms[3];
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/* Intern the target atoms. */
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target_atoms = malloc (sizeof *target_atoms * argc - 3);
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XInternAtoms (display, &argv[3], argc - 3, False, target_atoms);
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/* Write each of the atoms as parameters before making the selection
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request. */
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atoms[0] = target_atoms[0];
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atoms[1] = target_atoms[0];
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XChangeProperty (display, selection_transfer_window, MULTIPLE,
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ATOM_PAIR, 32, PropModeReplace,
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(unsigned char *) atoms, 2);
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for (i = 1; i < argc - 3; ++i)
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{
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atoms[0] = target_atoms[i];
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atoms[1] = target_atoms[i];
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XChangeProperty (display, selection_transfer_window, MULTIPLE,
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ATOM_PAIR, 32, PropModeAppend,
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(unsigned char *) atoms, 2);
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}
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/* Now, request the selection. */
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XConvertSelection (display, CLIPBOARD, MULTIPLE,
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MULTIPLE, selection_transfer_window,
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timestamp);
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/* And wait for the SelectionNotify event. */
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wait_for_selection_notify (&event);
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/* Selection conversion failed. */
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if (event.xselection.property == None)
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return 1;
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/* Now, read the MULTIPLE property again. See which conversions
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were completed. */
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XGetWindowProperty (display, selection_transfer_window,
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event.xselection.property, 0, (argc - 3) * 2,
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True, ATOM_PAIR,
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&actual_type, &actual_format, &nitems,
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&bytes_after, &data);
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if (actual_format != 32 || actual_type != ATOM_PAIR
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|| nitems != (argc - 3) * 2)
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return 1;
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parameters = (Atom *) data;
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for (i = 0; i < argc - 3; ++i)
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{
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if (!parameters[i * 2 + 1])
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continue;
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property = parameters[i * 2];
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XGetWindowProperty (display, selection_transfer_window,
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property, 0, 0xffffffff, True, AnyPropertyType,
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&actual_type, &actual_format, &nitems, &bytes_after,
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&data);
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if (!data || bytes_after)
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return 1;
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if (actual_type == INCR)
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{
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while (true)
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{
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XFree (data);
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wait_for_new_value (&event, property);
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XGetWindowProperty (display, selection_transfer_window, property, 0,
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0xffffffff, True, AnyPropertyType, &actual_type,
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&actual_format, &nitems, &bytes_after, &data);
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if (!data)
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return 0;
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if (nitems)
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{
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/* Write the selection data to stdout. */
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if (fwrite (data, get_size_for_format (actual_format),
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nitems, stdout) != nitems)
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return 1;
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continue;
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}
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/* Selection transfer is complete. */
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fflush (stdout);
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break;
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}
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}
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else
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{
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/* Write the selection data to stdout. */
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if (fwrite (data, get_size_for_format (actual_format),
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nitems, stdout) != nitems)
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return 1;
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/* Return success. */
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fflush (stdout);
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}
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}
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return 0;
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}
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