Update windows.c

src/system/wm/windows.c

@@ -38,13 +38,51 @@ void spawn_window(window_t *window) {
   }
 }
 
+#include "windows.h"
+
+window_t windows[MAX_WINDOWS];
+int num_windows = 0;
+
+uint32_t w_old_pixels[MAX_WINDOWS][WIN_WIDTH][WIN_HEIGHT];
+int old_window_x[MAX_WINDOWS];
+int old_window_y[MAX_WINDOWS];
+int last_updated_window_index = -1;
+
+void spawn_window(window_t *window) {
+  if (num_windows < MAX_WINDOWS) {
+    window->buffer = malloc(window->width * window->height * sizeof(uint32_t));
+    window->old_buffer =
+        malloc(window->width * window->height * sizeof(uint32_t));
+    if (window->buffer == NULL || window->old_buffer == NULL) {
+      dprintf("Failed to allocate memory for window buffer\n");
+      return;
+    }
+
+    memset(window->buffer, 0xFFFFFFFF,
+           window->width * window->height * sizeof(uint32_t));
+    memcpy(window->old_buffer, window->buffer,
+           window->width * window->height * sizeof(uint32_t));
+
+    windows[num_windows] = *window;
+    num_windows++;
+
+    // // TODO: Make this not hardcoded to window id 0?
+    old_window_x[0] = window->x;
+    old_window_y[0] = window->y;
+    window->initialized = false;
+
+    render_window_gui(window);
+    update_window(window);
+  } else {
+    dprintf("Maximum number of windows reached\n");
+  }
+}
+
 void render_window_gui(window_t *window) {
-  int i, j;
-  uint32_t pixel;
   bool buffer_changed = false;
 
-  for (i = 0; i < window->height; i++) {
-    for (j = 0; j < window->width; j++) {
+  for (int i = 0; i < window->height; i++) {
+    for (int j = 0; j < window->width; j++) {
       if (window->buffer[i * window->width + j] !=
           window->old_buffer[i * window->width + j]) {
         buffer_changed = true;
@@ -57,9 +95,9 @@ void render_window_gui(window_t *window) {
   }
 
   if (!window->initialized || buffer_changed) {
-    for (i = 0; i < window->height; i++) {
-      for (j = 0; j < window->width; j++) {
-        pixel = window->buffer[i * window->width + j];
+    for (int i = 0; i < window->height; i++) {
+      for (int j = 0; j < window->width; j++) {
+        uint32_t pixel = window->buffer[i * window->width + j];
         uint8_t alpha = (pixel & ALPHA_MASK) >> ALPHA_SHIFT;
         uint8_t red = (pixel & RED_MASK) >> RED_SHIFT;
         uint8_t green = (pixel & GREEN_MASK) >> GREEN_SHIFT;