1 files changed, 87 insertions, 0 deletions

diff --git a/src/transient/transient.c b/src/transient/transient.c
new file mode 100644
index 0000000..ed6539f
--- /dev/null
+++ b/src/transient/transient.c
@@ -0,0 +1,87 @@
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define FLOATING_WINDOW_WIDTH 400
+#define FLOATING_WINDOW_HEIGHT 400
+#define FLOATING_WINDOW_X_POS 100
+#define FLOATING_WINDOW_Y_POS 100
+
+#define TRANSIENT_WINDOW_WIDTH 100
+#define TRANSIENT_WINDOW_HEIGHT 100
+#define TRANSIENT_WINDOW_X_POS 50
+#define TRANSIENT_WINDOW_Y_POS 50
+
+#define SLEEP_TIME 5
+
+#define WINDOW_BORDER_WIDTH 0
+#define WINDOW_BORDER_COLOR 0
+#define WINDOW_BACKGROUND_COLOR 0
+
+/**
+ * @brief Function that creates and manages floating and transient window.
+ *
+ * This program opens an X display, creates a floating window with specific
+ * size and position, and then creates a transient (child) window after a
+ * specified delay. The transient window is always associated with the
+ * floating window, meaning it will behave as a child of the floating window.
+ * The program uses Xlib to interact with the X server, handle events, and
+ * manage window properties such as size, title, and position.
+ *
+ * The key steps are:
+ * 1. Create the floating window and set its size constraints.
+ * 2. After a delay (5 seconds), create the transient window and associate
+ *    it with the floating window.
+ * 3. Display both windows on the screen.
+ * 4. Wait for and process X events in an infinite loop. This allows the
+ *    windows to remain open and interact with the X server.
+ *
+ * @return int Exit status (always 0).
+ */
+int main(void) {
+  Display *display;
+  Window rootWindow, floatingWindow, transientWindow = None;
+  XSizeHints sizeHints;
+  XEvent event;
+
+  display = XOpenDisplay(NULL);
+  if (!display)
+    exit(1);
+
+  rootWindow = DefaultRootWindow(display);
+
+  floatingWindow = XCreateSimpleWindow(
+      display, rootWindow, FLOATING_WINDOW_X_POS, FLOATING_WINDOW_Y_POS,
+      FLOATING_WINDOW_WIDTH, FLOATING_WINDOW_HEIGHT, WINDOW_BORDER_WIDTH,
+      WINDOW_BORDER_COLOR, WINDOW_BACKGROUND_COLOR);
+
+  sizeHints.min_width = sizeHints.max_width = sizeHints.min_height =
+      sizeHints.max_height = FLOATING_WINDOW_WIDTH;
+  sizeHints.flags = PMinSize | PMaxSize;
+  XSetWMNormalHints(display, floatingWindow, &sizeHints);
+  XStoreName(display, floatingWindow, "floating");
+  XMapWindow(display, floatingWindow);
+  XSelectInput(display, floatingWindow, ExposureMask);
+
+  while (1) {
+    XNextEvent(display, &event);
+
+    if (transientWindow == None) {
+      sleep(SLEEP_TIME);
+
+      transientWindow = XCreateSimpleWindow(
+          display, rootWindow, TRANSIENT_WINDOW_X_POS, TRANSIENT_WINDOW_Y_POS,
+          TRANSIENT_WINDOW_WIDTH, TRANSIENT_WINDOW_HEIGHT, WINDOW_BORDER_WIDTH,
+          WINDOW_BORDER_COLOR, WINDOW_BACKGROUND_COLOR);
+
+      XSetTransientForHint(display, transientWindow, floatingWindow);
+      XStoreName(display, transientWindow, "transient");
+      XMapWindow(display, transientWindow);
+      XSelectInput(display, transientWindow, ExposureMask);
+    }
+  }
+
+  XCloseDisplay(display);
+  exit(0);
+}