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85 lines
2.7 KiB
85 lines
2.7 KiB
#include <QX11Info>
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#include <xcb/xproto.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "xmousetap.h"
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XMouseTap::XMouseTap() {}
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XMouseTap::~XMouseTap() {}
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void XMouseTap::initMouseEventTap() {}
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void XMouseTap::quitMouseEventTap() {}
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static void find_grab_window_recursive(xcb_connection_t *dpy, xcb_window_t window,
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QRect rc, int16_t offset_x, int16_t offset_y,
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xcb_window_t *grab_window, uint32_t *grab_window_size) {
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xcb_query_tree_cookie_t tree_cookie;
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xcb_query_tree_reply_t *tree;
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tree_cookie = xcb_query_tree(dpy, window);
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tree = xcb_query_tree_reply(dpy, tree_cookie, NULL);
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xcb_window_t *children = xcb_query_tree_children(tree);
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for (int i = 0; i < xcb_query_tree_children_length(tree); i++) {
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xcb_get_geometry_cookie_t gg_cookie;
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xcb_get_geometry_reply_t *gg;
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gg_cookie = xcb_get_geometry(dpy, children[i]);
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gg = xcb_get_geometry_reply(dpy, gg_cookie, NULL);
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if (gg->x + offset_x <= rc.left() && gg->x + offset_x + gg->width >= rc.right() &&
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gg->y + offset_y <= rc.top() && gg->y + offset_y + gg->height >= rc.bottom()) {
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if (!*grab_window || gg->width * gg->height <= *grab_window_size) {
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*grab_window = children[i];
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*grab_window_size = gg->width * gg->height;
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}
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}
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find_grab_window_recursive(dpy, children[i], rc,
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gg->x + offset_x, gg->y + offset_y,
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grab_window, grab_window_size);
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free(gg);
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}
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free(tree);
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}
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void XMouseTap::enableMouseEventTap(QRect rc, bool enabled) {
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if (enabled && rc.isEmpty()) {
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return;
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}
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xcb_connection_t *dpy = QX11Info::connection();
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if (enabled) {
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// We grab the top-most smallest window
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xcb_window_t grab_window = 0;
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uint32_t grab_window_size = 0;
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find_grab_window_recursive(dpy, QX11Info::appRootWindow(QX11Info::appScreen()),
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rc, 0, 0, &grab_window, &grab_window_size);
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if (grab_window) {
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xcb_grab_pointer_cookie_t grab_cookie;
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xcb_grab_pointer_reply_t *grab;
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grab_cookie = xcb_grab_pointer(dpy, /* owner_events = */ 1,
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grab_window, /* event_mask = */ 0,
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XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
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grab_window, XCB_NONE, XCB_CURRENT_TIME);
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grab = xcb_grab_pointer_reply(dpy, grab_cookie, NULL);
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free(grab);
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}
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} else {
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xcb_void_cookie_t ungrab_cookie;
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xcb_generic_error_t *error;
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ungrab_cookie = xcb_ungrab_pointer_checked(dpy, XCB_CURRENT_TIME);
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error = xcb_request_check(dpy, ungrab_cookie);
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free(error);
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}
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}
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