mirror of
https://git.davidovski.xyz/anyscroll.git
synced 2024-08-15 00:43:38 +00:00
146 lines
3 KiB
C
146 lines
3 KiB
C
#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/extensions/XTest.h>
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#include <unistd.h>
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#include <X11/extensions/XInput2.h>
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#include <pthread.h>
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#include <math.h>
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static Display *dpy;
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static int scr, sw, sh;
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static int sx = -1, sy = -1;
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static Window root;
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static int tx, ty;
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static int vx, vy;
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static const int direction = -1; // direction to scroll in. 1 is natural, -1 is in direction of movement
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static const int pixels_to_scroll = 8; // number of pixels to move before one scroll event
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static void scroll(int v) {
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v = v * direction;
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printf("scrolling with v of %d\n", v);
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int btn;
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if (v > 0) btn = 4;
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else if (v < 0) btn = 5;
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else return;
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int times = abs(v);
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for (int i = 0; i < times; i++) {
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tx++;
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if (tx % pixels_to_scroll == 0) {
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XTestFakeButtonEvent(dpy, btn, True, CurrentTime);
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XFlush(dpy);
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XTestFakeButtonEvent(dpy, btn, False, CurrentTime);
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XFlush(dpy);
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}
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}
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}
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static void select_events(Display *dpy, Window win) {
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XIEventMask evmasks[1];
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unsigned char mask1[(XI_LASTEVENT + 7)/8];
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memset(mask1, 0, sizeof(mask1));
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XISetMask(mask1, XI_RawButtonPress);
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XISetMask(mask1, XI_RawButtonRelease);
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evmasks[0].deviceid = XIAllMasterDevices;
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evmasks[0].mask_len = sizeof(mask1);
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evmasks[0].mask = mask1;
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XISelectEvents(dpy, win, evmasks, 1);
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XFlush(dpy);
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}
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static void getmousepos(int *px, int *py) {
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Window r, child;
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int rx, ry;
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unsigned int mask;
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XQueryPointer(dpy, root, &r, &child, px, py, &rx, &ry, &mask);
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}
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static void* loop() {
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int px, py, lx, ly, dx, dy;
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while (1) {
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lx = px, ly = py;
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getmousepos(&px, &py);
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dx = px - lx;
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dy = py - ly;
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if (sx != -1 && sy != -1) scroll(dy);
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if (dx != 0 | dy != 0) {
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//printf("%d, %d with deltas (%d, %d)\n", sx, sy, dx, dy);
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}
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sleep(0.1);
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}
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}
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static void mouse_down(XIRawEvent *xev) {
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getmousepos(&sx, &sy);
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}
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static void mouse_up(XIRawEvent *xev) {
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sx = -1;
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sy = -1;
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}
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int main(int argc, const char **argv) {
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XInitThreads();
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for (int i = 1; i < argc; i++) {
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if (argv[i][1] == 'h') {
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fprintf(stdout, "there is no help to be given\n");
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}
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}
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if (!(dpy = XOpenDisplay(0x0))) return 1;
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scr = DefaultScreen(dpy);
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root = XDefaultRootWindow(dpy);
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sw = DisplayWidth(dpy, scr);
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sh = DisplayHeight(dpy, scr);
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fprintf(stdout, "waiting for events...\n");
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XEvent ev;
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XIEvent *xi_event;
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XIRawEvent *xev;
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XGenericEventCookie *cookie = &ev.xcookie;
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select_events(dpy, root);
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pthread_t id[2];
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pthread_create(&id[0], NULL, loop, &argv);
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for (;;) {
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if (XCheckTypedEvent(dpy, GenericEvent ,&ev)) {
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if (cookie->type != GenericEvent || !XGetEventData(dpy, cookie)) {
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continue;
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}
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xi_event = (XIEvent *) cookie->data;
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xev = (XIRawEvent *) xi_event;
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switch (cookie->evtype) {
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case XI_RawButtonPress:
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if (xev->detail == 2) mouse_down(xev);
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break;
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case XI_RawButtonRelease:
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if (xev->detail == 2) mouse_up(xev);
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break;
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}
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//if (t - CurrentTime < 500) {
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// XFreeEventData(dpy, cookie);
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//}
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}
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} // there is no way out of this loop lol
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XCloseDisplay(dpy);
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return 0;
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}
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