backup
宇天
commit
28db16e977
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@ -0,0 +1,3 @@
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*.o
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*.swp
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xmousepasteblock
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TARGET = xmousepasteblock
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INSTALL = install
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PREFIX = /usr
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BINDIR = $(PREFIX)/bin
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CC = gcc
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CFLAGS += -std=gnu99
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CFLAGS += -Wall -Wundef -Wshadow -Wformat-security
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LD = $(CC)
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LDFLAGS += $(shell pkg-config --libs x11 xi)
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LDFLAGS += -lev
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.NOTPARALLEL:
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.PHONY: all
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all: clean $(TARGET)
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.PHONY: debug
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debug: clean
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debug: CFLAGS += -g -DDEBUG
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debug: $(TARGET)
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.PHONY: $(TARGET)
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$(TARGET): $(TARGET).o
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$(LD) "$<" $(LDFLAGS) -o "$(TARGET)"
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$(TARGET).o: $(TARGET).c
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$(CC) $(CFLAGS) -o "$@" -c "$<"
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.PHONY: install
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install: $(TARGET)
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$(INSTALL) -Dm 0755 "$(TARGET)" "$(DESTDIR)$(BINDIR)/$(TARGET)"
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.PHONY: uninstall
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uninstall:
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$(RM) "$(DESTDIR)$(BINDIR)/$(TARGET)"
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.PHONY: clean
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clean:
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$(RM) $(TARGET) $(TARGET).o
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# XMousePasteBlock
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Listens for middle mouse click events and clears the primary X selection/clipboard on detection to avoid accidentially pasting stuff all over the place.
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## About
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No need to disable your precious middle mouse button bindings, no clearing of visual selections nor performance losses because of emptying the primary X clipboard periodically.
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With the utilization of XInput and Xlibs this has _no_ measurable impact on performance whatsoever.
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No elevated privileges required. Just run within your regular users' X session.
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## Building
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````
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make
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sudo make install
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````
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## Running
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Just add `xmousepasteblock` to your startup script/config.
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## Known issues
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In case of devices which are configured with middle mouse button hold-to-scroll (e.g. Trackpoints), it may happen that the primary selection clear action gets fired too late on older and slower machines.
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You can observe the behavior by building with the DEBUG flag set (`make debug`), running `xmousepasteblock` in a shell and watching the debug output as you long press and hold the mouse buttons.
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This is due to the fact that the XI_RawButtonPress event only gets fired _after_ releasing the middle mouse button (in case the user wanted to execute a scroll action).
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The only option to work around this is to disable the middle mouse button hold-to-scroll functionality on Trackpoint devices (which is often not desirable).
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To do so (using _libinput_):
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`xinput set-prop <device id> 'libinput Button Scrolling Button' 0`
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@ -0,0 +1,129 @@
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/*
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* Copyright (c) 2018 Micha LaQua <micha.laqua@gmail.com>
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*
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* Special thanks to Ingo Buerk (Airblader) for his work on the
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* awesome unclutter-xfixes project, upon which the XInput eventcode
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* is based on.
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*
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*
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* This program 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, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ev.h>
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <X11/extensions/XInput2.h>
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static Display *display;
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static struct ev_io *x_watcher;
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static struct ev_check *x_check;
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static int xi_opcode = -1;
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void errormsg(char *msg) {
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printf("ERROR: %s\n", msg);
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exit(1);
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}
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void init_xinput(void) {
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int event, error;
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if (!XQueryExtension(display, "XInputExtension", &xi_opcode, &event, &error)) {
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errormsg("XInput extension not available");
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}
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int major_op = 2, minor_op = 2;
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int result = XIQueryVersion(display, &major_op, &minor_op);
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if (result == BadRequest) {
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errormsg("XI2 is not supported in a sufficient version (>=2.2 required).");
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} else if (result != Success) {
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errormsg("Failed to query XI2");
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}
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}
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void init_eventmask(void) {
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XIEventMask masks[1];
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unsigned char mask[(XI_LASTEVENT + 7)/8];
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memset(mask, 0, sizeof(mask));
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masks[0].deviceid = XIAllMasterDevices;
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masks[0].mask_len = sizeof(mask);
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masks[0].mask = mask;
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XISetMask(mask, XI_RawButtonPress);
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XISelectEvents(display, DefaultRootWindow(display), masks, 1);
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XFlush(display);
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}
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void clear_primary(void) {
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XSetSelectionOwner(display, XA_PRIMARY, None, CurrentTime);
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XSync(display, False);
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#ifdef DEBUG
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printf("primary selection cleared\n");
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#endif
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}
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void stub_cb(EV_P_ ev_io *w, int revents) {
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/* STUB */
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}
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void check_cb(EV_P_ ev_check *w, int revents) {
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XEvent ev;
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while (XPending(display) > 0) {
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XNextEvent(display, &ev);
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XGenericEventCookie *cookie = &ev.xcookie;
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if (cookie->type != GenericEvent || cookie->extension != xi_opcode || !XGetEventData(display, cookie)) {
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continue;
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}
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const XIRawEvent *data = (const XIRawEvent *) cookie->data;
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#ifdef DEBUG
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printf("button %i pressed\n", data->detail);
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#endif
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if (data->detail == 2) {
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clear_primary();
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}
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XFreeEventData(display, cookie);
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}
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}
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int main(int argc, const char* argv[]) {
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struct ev_loop *evloop;
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display = XOpenDisplay(NULL);
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if (display == NULL) {
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errormsg("Failed to connect to the X server");
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return 1;
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}
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init_xinput();
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init_eventmask();
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evloop = EV_DEFAULT;
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x_watcher = calloc(sizeof(struct ev_io), 1);
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ev_io_init(x_watcher, stub_cb, XConnectionNumber(display), EV_READ);
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ev_io_start(evloop, x_watcher);
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x_check = calloc(sizeof(struct ev_check), 1);
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ev_check_init(x_check, check_cb);
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ev_check_start(evloop, x_check);
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ev_run(evloop, 0);
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return 0;
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}
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Reference in New Issue