Attachment 73535 Details for Bug 59772 – X11 clipboard test program

X11 clipboard test program

readclipboard.c (text/plain), 4.47 KB, created by Esme Povirk on 2013-01-23 17:22:42 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Esme Povirk

Created: 2013-01-23 17:22:42 UTC

Size: 4.47 KB

patch

obsolete

>/*
>
>attempt to paste plain text to the clipboard and write it to the screen
>
>gcc -lX11 -Wall readclipboard.c -o readclipboard
>
>*/
>
>#include <stdio.h>
>#include <assert.h>
>#include <string.h>
>#include <unistd.h>
>
>#include <X11/Xlib.h>
>#include <X11/Xatom.h>
>
>#define BUFFER_SIZE 2048
>
>Atom SELECTION_DATA, CLIPBOARD, INCR;
>
>Bool is_selectionnotify_event(Display *display, XEvent *event, XPointer arg)
>{
>    return (event->type == SelectionNotify);
>}
>
>Bool is_propertynotify_event(Display *display, XEvent *event, XPointer arg)
>{
>    return (event->type == PropertyNotify);
>}
>
>int read_property(Display *display, Window window, int recursive)
>{
>    int i, j;
>    Atom actual_type;
>    int actual_format;
>    unsigned long nitems, bytes_after=1;
>    unsigned char *prop=NULL;
>    char* atom_names[BUFFER_SIZE/4];
>    int got_data=0;
>
>    for (i=0; bytes_after != 0; i++)
>    {
>        XGetWindowProperty(
>            display, /* display */
>            window, /* window */
>            SELECTION_DATA, /* property */
>            i*BUFFER_SIZE/4, /* long_offset */
>            BUFFER_SIZE/4, /* long_length */
>            False, /* delete */
>            AnyPropertyType, /* req_type */
>            &actual_type, /* actual_type_return */
>            &actual_format, /* actual_format_return */
>            &nitems, /* nitems_return */
>            &bytes_after, /* bytes_after_return */
>            &prop /* prop_return */
>        );
>
>        if (nitems)
>            got_data = 1;
>
>        if (actual_type == XA_ATOM)
>        {
>            assert(actual_format == 32);
>            XGetAtomNames(display, (Atom*)prop, nitems, atom_names);
>            for (j=0; j<nitems; j++)
>            {
>                fprintf(stdout, "%s\n", atom_names[j]);
>                XFree(atom_names[j]);
>            }
>        }
>        else if (actual_type == INCR)
>        {
>            XEvent event;
>            int read_data = 1;
>
>            assert(!recursive);
>
>            /* Clear out any previous property notify events */
>            while (XCheckIfEvent(display, &event, is_propertynotify_event, NULL));
>
>            XDeleteProperty(display, window, SELECTION_DATA);
>
>            while (read_data)
>            {
>                /* wait for PropertyNotify with new value */
>                while (1)
>                {
>                    XIfEvent(display, &event, is_propertynotify_event, NULL);
>
>                    if (event.xproperty.window == window && event.xproperty.atom == SELECTION_DATA &&
>                        event.xproperty.state == PropertyNewValue)
>                        break;
>                }
>
>                read_data = read_property(display, window, 1);
>
>                XDeleteProperty(display, window, SELECTION_DATA);
>            }
>
>            return 0;
>        }
>        else if (actual_type == None && actual_format == 0)
>            assert(0);
>        else
>        {
>            fwrite(prop, actual_format/8, nitems, stdout);
>        }
>
>        XFree(prop);
>    }
>
>    return got_data;
>}
>
>int main(int argc, char *argv[])
>{
>    Display *display;
>    Window window;
>    XEvent event;
>    int result=0;
>    Atom target;
>
>    display = XOpenDisplay(NULL);
>    if (!display)
>    {
>        fprintf(stderr, "Cannot open X display.\n");
>        return 1;
>    }
>
>    window = XCreateSimpleWindow(
>        display,
>        DefaultRootWindow(display),
>        0, 0, 1, 1, /* xywh */
>        0, /* border_width */
>        0, /* border */
>        0 /* background */
>        );
>
>    XSelectInput(display, window, PropertyChangeMask);
>
>    SELECTION_DATA = XInternAtom(display, "SELECTION_DATA", False);
>    CLIPBOARD = XInternAtom(display, "CLIPBOARD", False);
>    INCR = XInternAtom(display, "INCR", False);
>
>    if (argc == 1)
>        target = XA_STRING;
>    else
>        target = XInternAtom(display, argv[1], True);
>
>    if (target == None)
>    {
>        fprintf(stderr, "No such atom exists.\n");
>        result=1;
>    }
>    else
>    {
>        XConvertSelection(
>            display,
>            CLIPBOARD,
>            target,
>            SELECTION_DATA,
>            window,
>            CurrentTime
>            );
>
>        /* wait until we get a SelectionNotify event */
>        XIfEvent(display, &event, is_selectionnotify_event, NULL);
>
>        if (event.xselection.property == SELECTION_DATA)
>        {
>            read_property(display, window, 0);
>        }
>        else
>        {
>            fprintf(stderr, "Target not available.\n");
>            result=1;
>        }
>    }
>
>    XDestroyWindow(display, window);
>
>    XCloseDisplay(display);
>
>    return result;
>}
>

Actions: View

Attachments on bug 59772: 73534 | 73535