添加布局算法并在新建窗口时应用规则

src/layout.c

@@ -0,0 +1,98 @@
+#include "layout.h"
+
+#include <math.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#include "types.h"
+
+client_t *next_visible_client(client_t *c) {
+  while (c &&
+         (c->floating || c->fullscreen || c->maximize || !CLIENT_VISIBLE(c))) {
+    c = c->next;
+  }
+  return c;
+}
+
+void maximize_client(client_t *c) {
+  monitor_t *m = c->monitor;
+  c->x = m->window_x;
+  c->y = m->window_y;
+  c->width = m->window_width;
+  c->height = m->window_height;
+}
+
+void fullscreen_client(client_t *c) {
+  monitor_t *m = c->monitor;
+  c->x = m->monitor_x;
+  c->y = m->monitor_y;
+  c->width = m->monitor_width;
+  c->height = m->monitor_height;
+}
+
+void monocle(monitor_t *monitor) {
+  client_t *c = next_visible_client(monitor->clients);
+  for (; c; c = next_visible_client(c->next)) maximize_client(c);
+}
+
+void tile(monitor_t *monitor) {
+  uint32_t n;
+  client_t *c = NULL;
+  for (n = 0, c = next_visible_client(monitor->clients); c;
+       c = next_visible_client(c->next), ++n);
+
+  if (n == 0) {
+    return;
+  }
+
+  uint32_t columns = (uint32_t)floor(sqrt(n));
+  if (columns * (columns + 1) <= n) {
+    columns++;
+  }
+  uint32_t rows_in_other_cols = n / columns;
+  uint32_t rows_in_main_col;
+  while ((rows_in_main_col = n - (columns - 1) * rows_in_other_cols) >
+         rows_in_other_cols) {
+    rows_in_other_cols++;
+  }
+
+  uint32_t width_avg = monitor->window_width / columns;
+  uint32_t width_for_main_col =
+    monitor->window_width - (columns - 1) * width_avg;
+  uint32_t width_for_other_cols = width_avg;
+
+  uint32_t i = 0, row = 0, col = 0, row_count, width, height;
+  int32_t y = monitor->window_y, x = monitor->window_x;
+  for (c = next_visible_client(monitor->clients); c;
+       c = next_visible_client(c->next), i++) {
+    if (i < rows_in_main_col) {
+      row = i;
+      width = width_for_main_col;
+      row_count = rows_in_main_col;
+    } else {
+      width = width_for_other_cols;
+      row_count = rows_in_other_cols;
+      if (((i - rows_in_main_col) % row_count) == 0) {
+        col++;
+        row = 0;
+        x += col == 1 ? width_for_main_col : width_for_other_cols;
+        y = monitor->window_y;
+      }
+    }
+
+    uint32_t h_avg = monitor->window_height / row_count;
+    uint32_t h_main = monitor->window_height - h_avg * (row_count - 1);
+    height = row == 0 ? h_main : h_avg;
+    c->x = x;
+    c->y = y;
+    c->width = width - 2 * c->border_width;
+    c->height = height - 2 * c->border_width;
+    y += height;
+  }
+}
+
+void calc_clients_geometry_of_monitor(monitor_t *monitor) {
+  if (monitor && monitor->layout && monitor->layout->arrange) {
+    monitor->layout->arrange(monitor);
+  }
+}