Fixed Stuff in Windows Manager.

kernel/memory/kernel_internal_memory.cpp

@@ -104,7 +104,7 @@ bool memory_impl::init() {
     }
 
     const size_t nb_pages = libk::div_round_down(_contiguous_stop - _contiguous_start + 1, PAGE_SIZE);
-    const size_t nb_used_page = libk::div_round_up(PageAlloc::memory_needed(nb_pages), PAGE_SIZE);
+    const size_t nb_used_page = libk::div_round_up(ContiguousPageAllocator::memory_needed(nb_pages), PAGE_SIZE);
 
     PhysicalPA contiguous_physical_memory;
     if (!allocate_pages(_lin_alloc, nb_used_page, &contiguous_physical_memory)) {

kernel/wm/window_manager.cpp

@@ -71,14 +71,14 @@ void WindowManager::destroy_window(Window* window) {
 
   window->get_task()->unregister_window(window);
 
-  const auto it = std::find(m_windows.begin(), m_windows.end(), window);
-  m_windows.erase(it);
-
   if (m_focus_window == window) {
     // Unfocus the window.
     unfocus_window(window);
   }
 
+  const auto it = std::find(m_windows.begin(), m_windows.end(), window);
+  m_windows.erase(it);
+
   --m_window_count;
   delete window;
 
@@ -219,11 +219,15 @@ void WindowManager::unfocus_window(Window* window) {
   Window* new_focus_window = nullptr;
   for (auto* w : m_windows) {
     // TODO: give focus to the nearest window (according to depth).
-    if (w != window)
-      w = new_focus_window;
+    if (w != window && w->is_visible())
+      new_focus_window = w;
   }
 
   m_focus_window = nullptr;
+
+  if (new_focus_window == nullptr)
+    return;
+
   focus_window(new_focus_window);
 }
 
@@ -536,19 +540,20 @@ bool WindowManager::handle_key_event(sys_key_event_t event) {
       move_focus_window_down();
       return true;
     case SYS_KEY_F:  // Alt+F -> toggle fullscreen
-      // TODO: better fullscreen support (for example, when focus out, the window should not be fullscreen anymore)
+                     // TODO: better fullscreen support (for example, when focus out, the window should not be
+                     // fullscreen anymore)
       if (m_focus_window != nullptr)
         set_window_geometry(m_focus_window, Rect::from_pos_and_size(0, 0, m_screen_width, m_screen_height));
       return true;
-    case SYS_KEY_Q:  // Alt+Q -> close window
+    case SYS_KEY_A:  // Alt+Q -> close window
       if (m_focus_window != nullptr) {
         sys_message_t message = {};
         message.id = SYS_MSG_CLOSE;
         post_message(m_focus_window, message);
       }
 
       return true;
-    case SYS_KEY_M:  // Alt+M -> mosaic layout
+    case SYS_KEY_SEMI_COLON:  // Alt+M -> mosaic layout
       mosaic_layout();
       return true;
     default:

usr/init.c

@@ -9,7 +9,7 @@ int main() {
       sys_print("Failed to spawn " program); \
   } while (0)
 
-  // LAUNCH("/usr/bin/credits");
+  LAUNCH("/usr/bin/credits");
   LAUNCH("/usr/bin/slides");
 
   while (true)

usr/slides.c

@@ -92,6 +92,8 @@ static const char* get_slide_path(int idx) {
 
 static uint8_t* load_slide_image(int idx, int* buffer_length) {
   const char* path = get_slide_path(idx);
+  sys_print("Loading...");
+  sys_print(path);
   sys_file_t* file = sys_open_file(path, SYS_FM_READ);
   if (file == NULL)
     return NULL;
@@ -107,6 +109,8 @@ static uint8_t* load_slide_image(int idx, int* buffer_length) {
   *buffer_length = file_size;
 
   sys_close_file(file);
+  sys_print("Done.");
+
   return buffer;
 }