maomaowm/src/fetch/client.h

bool check_hit_no_border(Client *c) {
	int i;
	bool hit_no_border = false;
	if (!render_border) {
		hit_no_border = true;
	}

	for (i = 0; i < config.tag_rules_count; i++) {
		if (c->tags & (1 << (config.tag_rules[i].id - 1)) &&
			config.tag_rules[i].no_render_border) {
			hit_no_border = true;
		}
	}

	if (no_border_when_single && c && c->mon && c->mon->visible_clients == 1) {
		hit_no_border = true;
	}
	return hit_no_border;
}
Client *termforwin(Client *w) {
	Client *c;

	if (!w->pid || w->isterm || w->noswallow)
		return NULL;

	wl_list_for_each(c, &fstack, flink) {
		if (c->isterm && !c->swallowing && c->pid &&
			isdescprocess(c->pid, w->pid)) {
			return c;
		}
	}

	return NULL;
}
Client *get_client_by_id_or_title(const char *arg_id, const char *arg_title) {
	Client *target_client = NULL;
	const char *appid, *title;
	Client *c = NULL;
	wl_list_for_each(c, &clients, link) {
		if (c->mon != selmon) {
			continue;
		}

		if (!(appid = client_get_appid(c)))
			appid = broken;
		if (!(title = client_get_title(c)))
			title = broken;

		if (arg_id && strncmp(arg_id, "none", 4) == 0)
			arg_id = NULL;

		if (arg_title && strncmp(arg_title, "none", 4) == 0)
			arg_title = NULL;

		if ((arg_title && regex_match(arg_title, title) && !arg_id) ||
			(arg_id && regex_match(arg_id, appid) && !arg_title) ||
			(arg_id && regex_match(arg_id, appid) && arg_title &&
			 regex_match(arg_title, title))) {
			target_client = c;
			break;
		}
	}
	return target_client;
}
struct wlr_box // 计算客户端居中坐标
setclient_coordinate_center(Client *c, struct wlr_box geom, int offsetx,
							int offsety) {
	struct wlr_box tempbox;
	int offset = 0;
	int len = 0;
	Monitor *m = c->mon ? c->mon : selmon;

	unsigned int cbw = check_hit_no_border(c) ? c->bw : 0;

	if (!c->no_force_center) {
		tempbox.x = m->w.x + (m->w.width - geom.width) / 2;
		tempbox.y = m->w.y + (m->w.height - geom.height) / 2;
	} else {
		tempbox.x = geom.x;
		tempbox.y = geom.y;
	}

	tempbox.width = geom.width;
	tempbox.height = geom.height;

	if (offsetx != 0) {
		len = (m->w.width - c->geom.width - 2 * m->gappoh) / 2;
		offset = len * (offsetx / 100.0);
		tempbox.x += offset;

		// 限制窗口在屏幕内
		if (tempbox.x < m->m.x) {
			tempbox.x = m->m.x - cbw;
		}
		if (tempbox.x + tempbox.width > m->m.x + m->m.width) {
			tempbox.x = m->m.x + m->m.width - tempbox.width + cbw;
		}
	}
	if (offsety != 0) {
		len = (m->w.height - c->geom.height - 2 * m->gappov) / 2;
		offset = len * (offsety / 100.0);
		tempbox.y += offset;

		// 限制窗口在屏幕内
		if (tempbox.y < m->m.y) {
			tempbox.y = m->m.y - cbw;
		}
		if (tempbox.y + tempbox.height > m->m.y + m->m.height) {
			tempbox.y = m->m.y + m->m.height - tempbox.height + cbw;
		}
	}

	return tempbox;
}
/* Helper: Check if rule matches client */
static bool is_window_rule_matches(const ConfigWinRule *r, const char *appid,
								   const char *title) {
	return (r->title && regex_match(r->title, title) && !r->id) ||
		   (r->id && regex_match(r->id, appid) && !r->title) ||
		   (r->id && regex_match(r->id, appid) && r->title &&
			regex_match(r->title, title));
}

Client *center_tiled_select(Monitor *m) {
	Client *c = NULL;
	Client *target_c = NULL;
	long int mini_distance = -1;
	int dirx, diry;
	long int distance;
	wl_list_for_each(c, &clients, link) {
		if (c && VISIBLEON(c, m) && ISTILED(c) && client_surface(c)->mapped &&
			!c->isfloating && !client_is_unmanaged(c)) {
			dirx = c->geom.x + c->geom.width / 2 - (m->w.x + m->w.width / 2);
			diry = c->geom.y + c->geom.height / 2 - (m->w.y + m->w.height / 2);
			distance = dirx * dirx + diry * diry;
			if (distance < mini_distance || mini_distance == -1) {
				mini_distance = distance;
				target_c = c;
			}
		}
	}
	return target_c;
}
Client *find_client_by_direction(Client *tc, const Arg *arg, bool findfloating,
								 bool align) {
	Client *c;
	Client **tempClients = NULL; // 初始化为 NULL
	int last = -1;

	// 第一次遍历，计算客户端数量
	wl_list_for_each(c, &clients, link) {
		if (c && (findfloating || !c->isfloating) && !c->isunglobal &&
			(focus_cross_monitor || c->mon == selmon) &&
			(c->tags & c->mon->tagset[c->mon->seltags])) {
			last++;
		}
	}

	if (last < 0) {
		return NULL; // 没有符合条件的客户端
	}

	// 动态分配内存
	tempClients = malloc((last + 1) * sizeof(Client *));
	if (!tempClients) {
		// 处理内存分配失败的情况
		return NULL;
	}

	// 第二次遍历，填充 tempClients
	last = -1;
	wl_list_for_each(c, &clients, link) {
		if (c && (findfloating || !c->isfloating) && !c->isunglobal &&
			(focus_cross_monitor || c->mon == selmon) &&
			(c->tags & c->mon->tagset[c->mon->seltags])) {
			last++;
			tempClients[last] = c;
		}
	}

	int sel_x = tc->geom.x;
	int sel_y = tc->geom.y;
	long long int distance = LLONG_MAX;
	Client *tempFocusClients = NULL;

	switch (arg->i) {
	case UP:
		for (int _i = 0; _i <= last; _i++) {
			if (tempClients[_i]->geom.y < sel_y &&
				tempClients[_i]->geom.x == sel_x) {
				int dis_x = tempClients[_i]->geom.x - sel_x;
				int dis_y = tempClients[_i]->geom.y - sel_y;
				long long int tmp_distance =
					dis_x * dis_x + dis_y * dis_y; // 计算距离
				if (tmp_distance < distance) {
					distance = tmp_distance;
					tempFocusClients = tempClients[_i];
				}
			}
		}
		if (!tempFocusClients && !align) {
			for (int _i = 0; _i <= last; _i++) {
				if (tempClients[_i]->geom.y < sel_y) {
					int dis_x = tempClients[_i]->geom.x - sel_x;
					int dis_y = tempClients[_i]->geom.y - sel_y;
					long long int tmp_distance =
						dis_x * dis_x + dis_y * dis_y; // 计算距离
					if (tmp_distance < distance) {
						distance = tmp_distance;
						tempFocusClients = tempClients[_i];
					}
				}
			}
		}
		break;
	case DOWN:
		for (int _i = 0; _i <= last; _i++) {
			if (tempClients[_i]->geom.y > sel_y &&
				tempClients[_i]->geom.x == sel_x) {
				int dis_x = tempClients[_i]->geom.x - sel_x;
				int dis_y = tempClients[_i]->geom.y - sel_y;
				long long int tmp_distance =
					dis_x * dis_x + dis_y * dis_y; // 计算距离
				if (tmp_distance < distance) {
					distance = tmp_distance;
					tempFocusClients = tempClients[_i];
				}
			}
		}
		if (!tempFocusClients && !align) {
			for (int _i = 0; _i <= last; _i++) {
				if (tempClients[_i]->geom.y > sel_y) {
					int dis_x = tempClients[_i]->geom.x - sel_x;
					int dis_y = tempClients[_i]->geom.y - sel_y;
					long long int tmp_distance =
						dis_x * dis_x + dis_y * dis_y; // 计算距离
					if (tmp_distance < distance) {
						distance = tmp_distance;
						tempFocusClients = tempClients[_i];
					}
				}
			}
		}
		break;
	case LEFT:
		for (int _i = 0; _i <= last; _i++) {
			if (tempClients[_i]->geom.x < sel_x &&
				tempClients[_i]->geom.y == sel_y) {
				int dis_x = tempClients[_i]->geom.x - sel_x;
				int dis_y = tempClients[_i]->geom.y - sel_y;
				long long int tmp_distance =
					dis_x * dis_x + dis_y * dis_y; // 计算距离
				if (tmp_distance < distance) {
					distance = tmp_distance;
					tempFocusClients = tempClients[_i];
				}
			}
		}
		if (!tempFocusClients && !align) {
			for (int _i = 0; _i <= last; _i++) {
				if (tempClients[_i]->geom.x < sel_x) {
					int dis_x = tempClients[_i]->geom.x - sel_x;
					int dis_y = tempClients[_i]->geom.y - sel_y;
					long long int tmp_distance =
						dis_x * dis_x + dis_y * dis_y; // 计算距离
					if (tmp_distance < distance) {
						distance = tmp_distance;
						tempFocusClients = tempClients[_i];
					}
				}
			}
		}
		break;
	case RIGHT:
		for (int _i = 0; _i <= last; _i++) {
			if (tempClients[_i]->geom.x > sel_x &&
				tempClients[_i]->geom.y == sel_y) {
				int dis_x = tempClients[_i]->geom.x - sel_x;
				int dis_y = tempClients[_i]->geom.y - sel_y;
				long long int tmp_distance =
					dis_x * dis_x + dis_y * dis_y; // 计算距离
				if (tmp_distance < distance) {
					distance = tmp_distance;
					tempFocusClients = tempClients[_i];
				}
			}
		}
		if (!tempFocusClients && !align) {
			for (int _i = 0; _i <= last; _i++) {
				if (tempClients[_i]->geom.x > sel_x) {
					int dis_x = tempClients[_i]->geom.x - sel_x;
					int dis_y = tempClients[_i]->geom.y - sel_y;
					long long int tmp_distance =
						dis_x * dis_x + dis_y * dis_y; // 计算距离
					if (tmp_distance < distance) {
						distance = tmp_distance;
						tempFocusClients = tempClients[_i];
					}
				}
			}
		}
		break;
	}

	free(tempClients); // 释放内存
	return tempFocusClients;
}

Client *direction_select(const Arg *arg) {

	Client *tc = selmon->sel;

	if (!tc)
		return NULL;

	if (tc && (tc->isfullscreen || tc->ismaxmizescreen)) {
		// 不支持全屏窗口的焦点切换
		return NULL;
	}

	return find_client_by_direction(tc, arg, true, false);
}

/* We probably should change the name of this, it sounds like
 * will focus the topmost client of this mon, when actually will
 * only return that client */
Client * // 0.5
focustop(Monitor *m) {
	Client *c;
	wl_list_for_each(c, &fstack, flink) {
		if (c->iskilling || c->isunglobal)
			continue;
		if (VISIBLEON(c, m))
			return c;
	}
	return NULL;
}