mirror of
https://github.com/Tha14/toxic.git
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380 lines
11 KiB
C
380 lines
11 KiB
C
/* xtra.c
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*
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*
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* Copyright (C) 2014 Toxic All Rights Reserved.
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*
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* This file is part of Toxic.
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*
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* Toxic is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Toxic is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Toxic. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "xtra.h"
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <pthread.h>
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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const Atom XtraTerminate = 1;
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const Atom XtraNil = 0;
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static Atom XdndAware;
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static Atom XdndEnter;
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static Atom XdndLeave;
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static Atom XdndPosition;
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static Atom XdndStatus;
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static Atom XdndDrop;
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static Atom XdndSelection;
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static Atom XdndDATA;
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static Atom XdndTypeList;
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static Atom XdndActionCopy;
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static Atom XdndFinished;
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struct _Xtra {
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drop_callback on_drop;
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Display *display;
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Window terminal_window;
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Window proxy_window;
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Window source_window; /* When we have a drop */
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Atom handling_version;
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Atom expecting_type;
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} Xtra;
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typedef struct _Property
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{
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unsigned char *data;
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int read_format;
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unsigned long read_num;
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Atom read_type;
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} Property;
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Property read_property(Window s, Atom p)
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{
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Atom read_type;
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int read_format;
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unsigned long read_num;
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unsigned long left_bytes;
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unsigned char *data = NULL;
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int read_bytes = 1024;
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/* Keep trying to read the property until there are no bytes unread */
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do {
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if (data) XFree(data);
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XGetWindowProperty(Xtra.display, s,
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p, 0,
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read_bytes,
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False, AnyPropertyType,
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&read_type, &read_format,
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&read_num, &left_bytes,
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&data);
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read_bytes *= 2;
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} while (left_bytes != 0);
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Property property = {data, read_format, read_num, read_type};
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return property;
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}
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Atom get_dnd_type(long *a, int l)
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{
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int i = 0;
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for (; i < l; i ++) {
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if (a[i] != XtraNil) return a[i]; /* Get first valid */
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}
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return XtraNil;
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}
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/* TODO maybe support only certain types in the future */
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static void handle_xdnd_enter(XClientMessageEvent* e)
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{
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Xtra.handling_version = (e->data.l[1] >> 24);
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if ((e->data.l[1] & 1)) {
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// Fetch the list of possible conversions
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Property p = read_property(e->data.l[0], XdndTypeList);
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Xtra.expecting_type = get_dnd_type((long*)p.data, p.read_num);
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XFree(p.data);
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} else {
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// Use the available list
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Xtra.expecting_type = get_dnd_type(e->data.l + 2, 3);
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}
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}
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static void handle_xdnd_position(XClientMessageEvent* e)
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{
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XEvent ev = {
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.xclient = {
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.type = ClientMessage,
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.display = e->display,
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.window = e->data.l[0],
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.message_type = XdndStatus,
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.format = 32,
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.data = {
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.l = {
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Xtra.proxy_window,
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(Xtra.expecting_type != XtraNil),
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0, 0,
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XdndActionCopy
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}
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}
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}
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};
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XSendEvent(Xtra.display, e->data.l[0], False, NoEventMask, &ev);
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XFlush(Xtra.display);
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}
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static void handle_xdnd_drop(XClientMessageEvent* e)
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{
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/* Not expecting any type */
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if (Xtra.expecting_type == XtraNil) {
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XEvent ev = {
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.xclient = {
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.type = ClientMessage,
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.display = e->display,
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.window = e->data.l[0],
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.message_type = XdndFinished,
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.format = 32,
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.data = {
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.l = {Xtra.proxy_window, 0, 0}
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}
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}
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};
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XSendEvent(Xtra.display, e->data.l[0], False, NoEventMask, &ev);
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} else {
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Xtra.source_window = e->data.l[0];
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XConvertSelection(Xtra.display,
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XdndSelection,
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Xtra.expecting_type,
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XdndSelection,
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Xtra.proxy_window,
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Xtra.handling_version >= 1 ? e->data.l[2] : CurrentTime);
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}
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}
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static void handle_xdnd_selection(XSelectionEvent* e)
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{
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/* DnD succesfully finished, send finished and call callback */
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XEvent ev = {
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.xclient = {
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.type = ClientMessage,
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.display = Xtra.display,
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.window = Xtra.source_window,
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.message_type = XdndFinished,
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.format = 32,
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.data = {
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.l = {Xtra.proxy_window, 1, XdndActionCopy}
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}
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}
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};
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XSendEvent(Xtra.display, Xtra.source_window, False, NoEventMask, &ev);
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Property p = read_property(Xtra.proxy_window, XdndSelection);
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DropType dt;
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if (strcmp(XGetAtomName(Xtra.display, p.read_type), "text/uri-list") == 0)
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dt = DT_file_list;
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else /* text/uri-list */
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dt = DT_plain;
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/* Call callback for every entry */
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if (Xtra.on_drop && p.read_num)
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{
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char *sptr;
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char *str = strtok_r((char *) p.data, "\n\r", &sptr);
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if (str) Xtra.on_drop(str, dt);
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while ((str = strtok_r(NULL, "\n\r", &sptr)))
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Xtra.on_drop(str, dt);
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}
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if (p.data) XFree(p.data);
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}
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void *event_loop(void* p)
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{
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/* Handle events like a real nigga */
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(void) p; /* DINDUNOTHIN */
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XEvent event;
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int pending;
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while (Xtra.display)
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{
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/* NEEDMOEVENTSFODEMPROGRAMS */
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XLockDisplay(Xtra.display);
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if((pending = XPending(Xtra.display))) XNextEvent(Xtra.display, &event);
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if (!pending)
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{
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XUnlockDisplay(Xtra.display);
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usleep(10000);
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continue;
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}
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if (event.type == ClientMessage)
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{
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Atom type = event.xclient.message_type;
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if (type == XdndEnter) handle_xdnd_enter(&event.xclient);
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else if (type == XdndPosition) handle_xdnd_position(&event.xclient);
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else if (type == XdndDrop) handle_xdnd_drop(&event.xclient);
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else if (type == XtraTerminate) break;
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}
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else if (event.type == SelectionNotify) handle_xdnd_selection(&event.xselection);
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/* AINNOBODYCANHANDLEDEMEVENTS*/
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else XSendEvent(Xtra.display, Xtra.terminal_window, 0, 0, &event);
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XUnlockDisplay(Xtra.display);
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}
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/* Actual XTRA termination
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* Please call xtra_terminate() at exit
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* otherwise HEWUSAGUDBOI happens
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*/
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if (Xtra.display) XCloseDisplay(Xtra.display);
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return (Xtra.display = NULL);
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}
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int init_xtra(drop_callback d)
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{
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memset(&Xtra, 0, sizeof(Xtra));
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if (!d) return -1;
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else Xtra.on_drop = d;
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XInitThreads();
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if ( !(Xtra.display = XOpenDisplay(NULL))) return -1;
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Xtra.terminal_window = focused_window_id();
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{
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/* Create an invisible window which will act as proxy for the DnD operation. */
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XSetWindowAttributes attr = {0};
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attr.event_mask = EnterWindowMask |
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LeaveWindowMask |
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ButtonMotionMask |
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ButtonPressMask |
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ButtonReleaseMask |
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ResizeRedirectMask;
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attr.do_not_propagate_mask = NoEventMask;
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Window root;
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int x, y;
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unsigned int wht, hht, b, d;
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/* Since we cannot capture resize events for parent window we will have to create
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* this window to have maximum size as defined in root window
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*/
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XGetGeometry(Xtra.display,
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XDefaultRootWindow(Xtra.display),
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&root, &x, &y, &wht, &hht, &b, &d);
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if (! (Xtra.proxy_window = XCreateWindow
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(Xtra.display, Xtra.terminal_window, /* Parent */
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0, 0, /* Position */
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wht, hht, /* Width + height */
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0, /* Border width */
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CopyFromParent, /* Depth */
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InputOnly, /* Class */
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CopyFromParent, /* Visual */
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CWEventMask | CWCursor, /* Value mask */
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&attr)) ) /* Attributes for value mask */
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return -1;
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}
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XMapWindow(Xtra.display, Xtra.proxy_window); /* Show window (sandwich) */
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XLowerWindow(Xtra.display, Xtra.proxy_window); /* Don't interfere with parent lmao */
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XdndAware = XInternAtom(Xtra.display, "XdndAware", False);
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XdndEnter = XInternAtom(Xtra.display, "XdndEnter", False);
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XdndLeave = XInternAtom(Xtra.display, "XdndLeave", False);
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XdndPosition = XInternAtom(Xtra.display, "XdndPosition", False);
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XdndStatus = XInternAtom(Xtra.display, "XdndStatus", False);
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XdndDrop = XInternAtom(Xtra.display, "XdndDrop", False);
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XdndSelection = XInternAtom(Xtra.display, "XdndSelection", False);
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XdndDATA = XInternAtom(Xtra.display, "XdndDATA", False);
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XdndTypeList = XInternAtom(Xtra.display, "XdndTypeList", False);
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XdndActionCopy = XInternAtom(Xtra.display, "XdndActionCopy", False);
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XdndFinished = XInternAtom(Xtra.display, "XdndFinished", False);
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/* Inform my nigga windows that we are aware of dnd */
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Atom XdndVersion = 3;
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XChangeProperty(Xtra.display,
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Xtra.proxy_window,
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XdndAware,
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XA_ATOM,
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32,
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PropModeReplace,
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(unsigned char*)&XdndVersion, 1);
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pthread_t id;
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if (pthread_create(&id, NULL, event_loop, NULL) != 0)
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return -1;
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pthread_detach(id);
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return 0;
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}
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void terminate_xtra()
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{
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if (!Xtra.display) return;
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XEvent terminate = {
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.xclient = {
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.type = ClientMessage,
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.display = Xtra.display,
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.message_type = XtraTerminate,
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}
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};
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XLockDisplay(Xtra.display);
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XDeleteProperty(Xtra.display, Xtra.proxy_window, XdndAware);
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XSendEvent(Xtra.display, Xtra.proxy_window, 0, NoEventMask, &terminate);
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XUnlockDisplay(Xtra.display);
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while (Xtra.display); /* Wait for termination */
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}
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long unsigned int focused_window_id()
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{
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if (!Xtra.display) return 0;
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Window focus;
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int revert;
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XLockDisplay(Xtra.display);
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XGetInputFocus(Xtra.display, &focus, &revert);
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XUnlockDisplay(Xtra.display);
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return focus;
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}
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int is_focused()
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{
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return Xtra.proxy_window == focused_window_id() || Xtra.terminal_window == focused_window_id();
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}
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