[digesting_libdecor] split state field out of hdr element, delete dead code, eliminate reducible functions

digesting_libdecor.c

@@ -160,18 +160,18 @@ pointer_motion(void *data, struct wl_pointer *wl_pointer, uint32_t time,
       wl_pointer_set_cursor(seat->wl_pointer, seat->serial, seat->cursor_surface, image->hotspot_x, image->hotspot_y);
     }
     
-    /* avoid warnings after decoration has been turned off */
     if (!GTK_IS_WIDGET(ctx.header) || ctx.active != COMPONENT_SLOT_HEADER){
       ctx.hdr_focus.type = HEADER_NONE;
     }
-    
     new_focus = get_header_focus(GTK_HEADER_BAR(ctx.header), seat->pointer_x, seat->pointer_y);
     
     /* only update if widget change so that we keep the state */
     if (ctx.hdr_focus.widget != new_focus.widget){
       ctx.hdr_focus = new_focus;
+      ctx.hdr_state = 0;
     }
-    ctx.hdr_focus.state |= GTK_STATE_FLAG_PRELIGHT;
+    ctx.hdr_state |= GTK_STATE_FLAG_PRELIGHT;
+    
     /* redraw with updated button visuals */
     draw_title_bar();
     wl_surface_commit(ctx.wl_surface);
@@ -236,7 +236,7 @@ pointer_button(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
                 case HEADER_MIN:
                 case HEADER_MAX:
                 case HEADER_CLOSE: {
-                  ctx.hdr_focus.state |= GTK_STATE_FLAG_ACTIVE;
+                  ctx.hdr_state |= GTK_STATE_FLAG_ACTIVE;
                   draw_title_bar();
                   wl_surface_commit(ctx.wl_surface);
                 }break;
@@ -281,7 +281,7 @@ pointer_button(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
                     default: break;
                   }
                   
-                  ctx.hdr_focus.state &= ~GTK_STATE_FLAG_ACTIVE;
+                  ctx.hdr_state &= ~GTK_STATE_FLAG_ACTIVE;
                   if (GTK_IS_WIDGET(ctx.header)){
                     draw_title_bar();
                     wl_surface_commit(ctx.wl_surface);
@@ -289,7 +289,7 @@ pointer_button(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
                 }
               }
               else{
-                ctx.hdr_focus.state &= ~GTK_STATE_FLAG_ACTIVE;
+                ctx.hdr_state &= ~GTK_STATE_FLAG_ACTIVE;
                 if (GTK_IS_WIDGET(ctx.header)) {
                   draw_title_bar();
                   wl_surface_commit(ctx.wl_surface);
@@ -364,7 +364,7 @@ touch_down(void *data, struct wl_touch *wl_touch, uint32_t serial,
             case HEADER_MIN:
             case HEADER_MAX:
             case HEADER_CLOSE: {
-              ctx.hdr_focus.state |= GTK_STATE_FLAG_ACTIVE;
+              ctx.hdr_state |= GTK_STATE_FLAG_ACTIVE;
               draw_title_bar();
               wl_surface_commit(ctx.wl_surface);
             }break;
@@ -398,7 +398,7 @@ touch_up(void *data, struct wl_touch *wl_touch, uint32_t serial, uint32_t time,
   if (seat->touch_focus && own_proxy(seat->touch_focus)){
     if (ctx.touch_active != 0){
       if (ctx.touch_active == COMPONENT_SLOT_HEADER){
-        switch (ctx.hdr_focus.type) {
+        switch (ctx.hdr_focus.type){
           case HEADER_MIN: {
             if (ctx.frame_capabilities & LIBDECOR_ACTION_MINIMIZE){
               xdg_toplevel_set_minimized(ctx.xdg_toplevel);
@@ -422,13 +422,13 @@ touch_up(void *data, struct wl_touch *wl_touch, uint32_t serial, uint32_t time,
         }
         
         /* unset active/clicked state once released */
-        ctx.hdr_focus.state &= ~GTK_STATE_FLAG_ACTIVE;
+        ctx.hdr_state &= ~GTK_STATE_FLAG_ACTIVE;
         if (GTK_IS_WIDGET(ctx.header)) {
           draw_title_bar();
           wl_surface_commit(ctx.wl_surface);
         }
       }
-      
+      else{
         seat->touch_focus = 0;
         ctx.touch_active = 0;
         ctx.hdr_focus.widget = 0;
@@ -437,6 +437,7 @@ touch_up(void *data, struct wl_touch *wl_touch, uint32_t serial, uint32_t time,
         wl_surface_commit(ctx.wl_surface);
       }
     }
+  }
 }
 
 static void
@@ -716,7 +717,8 @@ const struct xdg_toplevel_listener xdg_toplevel_listener = {
 };
 
 static void
-xdg_toplevel_decoration_configure(void *data, struct zxdg_toplevel_decoration_v1 *zxdg_toplevel_decoration_v1, uint32_t mode){
+xdg_toplevel_decoration_configure(void *data, struct zxdg_toplevel_decoration_v1 *toplevel,
+                                  uint32_t mode){
   if (!ctx.has_decoration_mode){
     ctx.has_decoration_mode = true;
     ctx.decoration_mode = mode;
@@ -954,7 +956,6 @@ int main(){
     xdg_toplevel_set_title(ctx.xdg_toplevel, "Example Window");
     ctx.title = strdup("Example Window");
     
-    draw_decoration();
     wl_surface_commit(ctx.wl_surface);
     
     /* (nodocs-wl_egl) */
@@ -1011,16 +1012,11 @@ int main(){
     }
   }
   
-  /* (egl) eglMakeCurrent */
   EGLBoolean make_current_success2 = 0;
   if (ctx.egl_surface != EGL_NO_SURFACE){
     make_current_success2 = eglMakeCurrent(ctx.egl_display, ctx.egl_surface, ctx.egl_surface, ctx.egl_context);
   }
   
-  /* (egl) eglSwapInterval
-  ** " specifies the minimum number of video frame periods per buffer swap
-  **   for the window associated with the current context "
-  */
   EGLBoolean swap_interval_success = 0;
   if (make_current_success2){
     swap_interval_success = eglSwapInterval(ctx.egl_display, 1);
@@ -1073,10 +1069,7 @@ int main(){
       }
     }
     
-    if (ctx.close_signal){
+    /* apply new surface config */
-      exit_loop = 1;
-    }
-    
     if (ctx.has_cached_config){
       ctx.has_cached_config = 0;
       if (ctx.cached_config.initialized){
@@ -1099,6 +1092,10 @@ int main(){
       glClear(GL_COLOR_BUFFER_BIT);
     }
     
+    if (ctx.close_signal){
+      exit_loop = 1;
+    }
+    
     /* (egl) eglSwapBuffers
     ** " back-buffered window surface, then the color buffer is copied
     **   (posted) to the native window associated with that surface "
@@ -1169,28 +1166,6 @@ decoration_type_from_window_state(enum libdecor_window_state window_state){
   return(result);
 }
 
-static void
-free_border_component(struct border_component *border_component){
-  if (border_component->wl_surface) {
-    wl_subsurface_destroy(border_component->wl_subsurface);
-    border_component->wl_subsurface = NULL;
-    wl_surface_destroy(border_component->wl_surface);
-    border_component->wl_surface = NULL;
-  }
-  
-  if (border_component->wl_buffer != 0){
-    wl_buffer_destroy(border_component->wl_buffer);
-  }
-  if (border_component->data != 0){
-    munmap(border_component->data, border_component->data_size);
-  }
-  border_component->wl_buffer = 0;
-  border_component->data = 0;
-  border_component->data_size = 0;
-  border_component->width = 0;
-  border_component->height = 0;
-}
-
 static enum xdg_toplevel_resize_edge
 xdg_edge_from_edge(enum libdecor_resize_edge edge){
   enum xdg_toplevel_resize_edge result = XDG_TOPLEVEL_RESIZE_EDGE_NONE;
@@ -1208,26 +1183,19 @@ xdg_edge_from_edge(enum libdecor_resize_edge edge){
   return(result);
 }
 
-void
-libdecor_frame_set_fullscreen(struct wl_output *output){
-  xdg_toplevel_set_fullscreen(ctx.xdg_toplevel, output);
-}
-
-void
-libdecor_frame_unset_fullscreen(void){
-  xdg_toplevel_unset_fullscreen(ctx.xdg_toplevel);
-}
-
 void
 libdecor_frame_commit(void){
-  Sides2D border_size = border_size_from_window_state(ctx.frame_window_state);
-  
   bool csd = false;
   if (ctx.visible &&
       ctx.decoration_mode == ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE){
     csd = true;
   }
   
+  Sides2D border_size = {0};
+  if (csd){
+    border_size = border_size_from_window_state(ctx.frame_window_state);
+  }
+  
   if (!(ctx.frame_capabilities & LIBDECOR_ACTION_RESIZE)){
     int mw = ctx.frame_content_width;
     int mh = ctx.frame_content_height;
@@ -1270,8 +1238,28 @@ libdecor_frame_commit(void){
     g_clear_pointer(&ctx.header, gtk_widget_destroy);
     g_clear_pointer(&ctx.window, gtk_widget_destroy);
     
-    free_border_component(&ctx.component_slot[COMPONENT_SLOT_HEADER]);
+    for (int i = 1; i < COMPONENT_SLOT_COUNT; i += 1){
-    free_border_component(&ctx.component_slot[COMPONENT_SLOT_SHADOW]);
+      struct border_component * border_component = &ctx.component_slot[i];
+      if (border_component->wl_subsurface != 0){
+        wl_subsurface_destroy(border_component->wl_subsurface);
+        border_component->wl_subsurface = 0;
+      }
+      if (border_component->wl_surface != 0){
+        wl_surface_destroy(border_component->wl_surface);
+        border_component->wl_surface = 0;
+      }
+      if (border_component->wl_buffer != 0){
+        wl_buffer_destroy(border_component->wl_buffer);
+        border_component->wl_buffer = 0;
+      }
+      if (border_component->data != 0){
+        munmap(border_component->data, border_component->data_size);
+        border_component->data = 0;
+      }
+      border_component->data_size = 0;
+      border_component->width = 0;
+      border_component->height = 0;
+    }
     ctx.shadow_showing = false;
     
     g_clear_pointer(&ctx.title, free);
@@ -1283,7 +1271,6 @@ libdecor_frame_commit(void){
     Extent2D extent = {0};
     extent.w = ctx.frame_content_width;
     extent.h = ctx.frame_content_height;
-    
     if (csd){
       extent.x = -border_size.x[0];
       extent.y = -border_size.y[0];
@@ -1546,200 +1533,161 @@ render_shadow(cairo_t *cr, cairo_surface_t *surface,
 //#include "os-compatibility.c"
 #ifndef HAVE_MKOSTEMP
 static int
-set_cloexec_or_close(int fd)
+set_cloexec_or_close(int fd){
-{
+  bool error = 0;
   long flags;
   
-  if (fd == -1)
+  if (fd >= 0){
-    return -1;
+    if (fcntl(fd, F_GETFD) == -1){
+      error = 1;
+    }
+    else if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1){
+      error = 1;
+    }
     
-  flags = fcntl(fd, F_GETFD);
+    if (error){
-  if (flags == -1)
+      close(fd);
-    goto err;
+      fd = -1;
-  
+    }
-  if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
+  }
-    goto err;
   
   return fd;
-  
-  err:
-  close(fd);
-  return -1;
 }
 #endif
 
 static int
-create_tmpfile_cloexec(char *tmpname)
+create_tmpfile_cloexec(char *tmpname){
-{
   int fd;
   
 #ifdef HAVE_MKOSTEMP
   fd = mkostemp(tmpname, O_CLOEXEC);
-  if (fd >= 0)
+  if (fd >= 0){
     unlink(tmpname);
+  }
 #else
   fd = mkstemp(tmpname);
-  if (fd >= 0) {
   fd = set_cloexec_or_close(fd);
+  if (fd >= 0) {
     unlink(tmpname);
   }
 #endif
   
-  return fd;
+  return(fd);
 }
 
 static int
-os_resize_anonymous_file(int fd, off_t size)
+os_resize_anonymous_file(int fd, off_t size){
-{
 #ifdef HAVE_POSIX_FALLOCATE
+  
   sigset_t mask;
   sigset_t old_mask;
-  
-  /* posix_fallocate() might be interrupted, so we need to check
-   * for EINTR and retry in that case.
-   * However, in the presence of an alarm, the interrupt may trigger
-   * repeatedly and prevent a large posix_fallocate() to ever complete
-   * successfully, so we need to first block SIGALRM to prevent
-   * this.
-   */
   sigemptyset(&mask);
   sigaddset(&mask, SIGALRM);
   sigprocmask(SIG_BLOCK, &mask, &old_mask);
-  /*
+  
-   * Filesystems that do not support fallocate will return EINVAL or
-   * EOPNOTSUPP. In this case we need to fall back to ftruncate
-   */
   do {
     errno = posix_fallocate(fd, 0, size);
   } while (errno == EINTR);
   sigprocmask(SIG_SETMASK, &old_mask, NULL);
-  if (errno == 0)
+  
-    return 0;
+  int result = 0;
-  else if (errno != EINVAL && errno != EOPNOTSUPP)
+  if (errno != 0){
-    return -1;
+    result = -1;
+    if (errno == EINVAL || errno == EOPNOTSUPP){
+      if (ftruncate(fd, size) >= 0){
+        result = 0;
+      }
+    }
+  }
+  return(result);
+  
+#else
+  
+  int result = -1;
+  if (ftruncate(fd, size) >= 0){
+    result = 0;
+  }
+  return(result);
+  
 #endif
-  if (ftruncate(fd, size) < 0)
-    return -1;
-  
-  return 0;
 }
-
-/*
- * Create a new, unique, anonymous file of the given size, and
- * return the file descriptor for it. The file descriptor is set
- * CLOEXEC. The file is immediately suitable for mmap()'ing
- * the given size at offset zero.
- *
- * The file should not have a permanent backing store like a disk,
- * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
- *
- * The file name is deleted from the file system.
- *
- * The file is suitable for buffer sharing between processes by
- * transmitting the file descriptor over Unix sockets using the
- * SCM_RIGHTS methods.
- *
- * If the C library implements posix_fallocate(), it is used to
- * guarantee that disk space is available for the file at the
- * given size. If disk space is insufficient, errno is set to ENOSPC.
- * If posix_fallocate() is not supported, program may receive
- * SIGBUS on accessing mmap()'ed file contents instead.
- *
- * If the C library implements memfd_create(), it is used to create the
- * file purely in memory, without any backing file name on the file
- * system, and then sealing off the possibility of shrinking it.  This
- * can then be checked before accessing mmap()'ed file contents, to
- * make sure SIGBUS can't happen.  It also avoids requiring
- * XDG_RUNTIME_DIR.
- */
 int
 libdecor_os_create_anonymous_file(off_t size){
-  static const char template[] = "/libdecor-shared-XXXXXX";
+  static const char key[] = "/libdecor-shared-XXXXXX";
-  const char *path;
+  int fd = -1;
-  char *name;
-  int fd;
   
 #ifdef HAVE_MEMFD_CREATE
   fd = memfd_create("libdecor", MFD_CLOEXEC | MFD_ALLOW_SEALING);
-  if (fd >= 0) {
+  if (fd >= 0){
-    /* We can add this seal before calling posix_fallocate(), as
-     * the file is currently zero-sized anyway.
-     *
-     * There is also no need to check for the return value, we
-     * couldn't do anything with it anyway.
-     */
     fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_SEAL);
-  } else
+  }
 #endif
-  {
+  
-    path = getenv("XDG_RUNTIME_DIR");
+  if (fd < 0){
-    if (!path) {
+    const char *path = getenv("XDG_RUNTIME_DIR");
+    if (path == 0){
       errno = ENOENT;
-      return -1;
     }
-    
+    else{
-    name = malloc(strlen(path) + sizeof(template));
+      char *name = malloc(strlen(path) + sizeof(key));
-    if (!name)
+      if (name != 0){
-      return -1;
-    
         strcpy(name, path);
-    strcat(name, template);
+        strcat(name, key);
-    
         fd = create_tmpfile_cloexec(name);
-    
         free(name);
-    
+      }
-    if (fd < 0)
+    }
-      return -1;
   }
   
-  if (os_resize_anonymous_file(fd, size) < 0) {
+  if (fd >= 0 && os_resize_anonymous_file(fd, size) < 0){
     close(fd);
-    return -1;
+    fd = -1;
   }
   
-  return fd;
+  return(fd);
 }
 
 //#include "plugins/gtk/libdecor-gtk.c"
 
+struct find_widget_variables{
+  char *name;
+  GtkWidget *widget;
+} find_widget_variables;
+
 static void
-gtk_fill_widget_from_name(GtkWidget *widget, void *data){
+fill_widget_from_name(GtkWidget *widget, void *data){
+  struct find_widget_variables *vars = data;
+  if (vars->widget == 0){
     bool match = false;
     if (GTK_IS_WIDGET(widget)){
-    struct header_element_data *elem = data;
       GtkStyleContext *style_context = gtk_widget_get_style_context(widget);
-    char *style_ctx = gtk_style_context_to_string(style_context, GTK_STYLE_CONTEXT_PRINT_SHOW_STYLE);
+      char *style_str = gtk_style_context_to_string(style_context, GTK_STYLE_CONTEXT_PRINT_SHOW_STYLE);
-    if (strstr(style_ctx, elem->name) != 0){
+      if (strstr(style_str, vars->name) != 0){
-      elem->widget = widget;
+        vars->widget = widget;
         match = true;
       }
-    free(style_ctx);
+      free(style_str);
     }
     
-  /* recursively traverse container */
     if (!match && GTK_IS_CONTAINER(widget)){
-    gtk_container_forall(GTK_CONTAINER(widget), &gtk_fill_widget_from_name, data);
+      gtk_container_forall(GTK_CONTAINER(widget), &fill_widget_from_name, data);
+    }
   }
 }
 
-static struct header_element_data
+static GtkWidget*
-find_widget_by_type(GtkWidget *widget, enum header_element type){
+find_widget_by_type(GtkWidget *root, enum header_element type){
-  char* name = 0;
+  struct find_widget_variables vars = {0};
   switch (type){
-    case HEADER_FULL:  name = "headerbar.titlebar:"; break;
+    case HEADER_FULL:  vars.name = "headerbar.titlebar:"; break;
-    case HEADER_TITLE: name = "label.title:"; break;
+    case HEADER_TITLE: vars.name = "label.title:"; break;
-    case HEADER_MIN:   name = ".minimize"; break;
+    case HEADER_MIN:   vars.name = ".minimize"; break;
-    case HEADER_MAX:   name = ".maximize"; break;
+    case HEADER_MAX:   vars.name = ".maximize"; break;
-    case HEADER_CLOSE: name = ".close"; break;
+    case HEADER_CLOSE: vars.name = ".close"; break;
     default:break;
   }
-  
+  fill_widget_from_name(root, &vars);
-  struct header_element_data data = {0};
+  return(vars.widget);
-  data.name = name;
-  data.type = type;
-  gtk_fill_widget_from_name(widget, &data);
-  return(data);
 }
 
 static struct header_element_data
@@ -1748,13 +1696,14 @@ get_header_focus(const GtkHeaderBar *header_bar, int x, int y){
   struct header_element_data result = {0};
   
   for (size_t i = 0; i < ARRAY_LENGTH(elems); i += 1){
-    struct header_element_data elem = find_widget_by_type(GTK_WIDGET(header_bar), elems[i]);
+    GtkWidget *widget = find_widget_by_type(GTK_WIDGET(header_bar), elems[i]);
-    if (elem.widget){
+    if (widget != 0){
       GtkAllocation allocation;
-      gtk_widget_get_allocation(GTK_WIDGET(elem.widget), &allocation);
+      gtk_widget_get_allocation(GTK_WIDGET(widget), &allocation);
       if (allocation.x <= x && x < allocation.x + allocation.width &&
           allocation.y <= y && y < allocation.y + allocation.height){
-        result = elem;
+        result.type = elems[i];
+        result.widget = widget;
         break;
       }
     }
@@ -1897,10 +1846,7 @@ array_append(enum header_element **array, size_t *n, enum header_element item){
 static void
 draw_header_button(cairo_t *cr, cairo_surface_t *surface,
                    enum header_element button_type){
-  struct header_element_data elem;
   GtkWidget *button;
-  GtkStyleContext* button_style;
-  GtkStateFlags style_state;
   
   GtkAllocation allocation;
   
@@ -1922,19 +1868,18 @@ draw_header_button(cairo_t *cr, cairo_surface_t *surface,
   GtkBorder border;
   GtkBorder padding;
   
-  elem = find_widget_by_type(ctx.header, button_type);
+  button = find_widget_by_type(ctx.header, button_type);
-  button = elem.widget;
   if (button){
-    button_style = gtk_widget_get_style_context(button);
+    GtkStyleContext *button_style = gtk_widget_get_style_context(button);
-    style_state = elem.state;
+    GtkStateFlags style_state = 0;
     
     /* change style based on window state and focus */
-    if (!(ctx.frame_window_state & LIBDECOR_WINDOW_STATE_ACTIVE)) {
+    if (!(ctx.frame_window_state & LIBDECOR_WINDOW_STATE_ACTIVE)){
       style_state |= GTK_STATE_FLAG_BACKDROP;
     }
-    if (ctx.hdr_focus.widget == button) {
+    if (ctx.hdr_focus.widget == button){
       style_state |= GTK_STATE_FLAG_PRELIGHT;
-      if (ctx.hdr_focus.state & GTK_STATE_FLAG_ACTIVE) {
+      if (ctx.hdr_state & GTK_STATE_FLAG_ACTIVE){
         style_state |= GTK_STATE_FLAG_ACTIVE;
       }
     }
@@ -2037,7 +1982,7 @@ static void
 draw_border_component(enum component_slot slot){
   if (slot < COMPONENT_SLOT_COUNT &&
       ctx.component_slot[slot].wl_surface != 0){
-    Extent2D extent = extent2d_from_component_slot(slot);
+    struct border_component *component = &ctx.component_slot[slot];
     
     if (slot == COMPONENT_SLOT_SHADOW && ctx.shadow_showing){
       struct wl_region *input_region;
@@ -2045,26 +1990,25 @@ draw_border_component(enum component_slot slot){
       input_region = wl_compositor_create_region(ctx.wl_compositor);
       wl_region_add(input_region, 0, 0, extent.w, extent.h);
       wl_region_subtract(input_region, -extent.x, -extent.y, ctx.frame_content_width, ctx.frame_content_height);
-      wl_surface_set_input_region(ctx.component_slot[slot].wl_surface, input_region);
+      wl_surface_set_input_region(component->wl_surface, input_region);
       wl_region_destroy(input_region);
     }
     
-    struct border_component *component = &ctx.component_slot[slot];
-    
     {
       if (component->wl_buffer != 0){
         wl_buffer_destroy(component->wl_buffer);
+        component->wl_buffer = 0;
       }
       if (component->data != 0){
         munmap(component->data, component->data_size);
-      }
-      component->wl_buffer = 0;
         component->data = 0;
+      }
       component->data_size = 0;
       component->width = 0;
       component->height = 0;
     }
     
+    Extent2D extent = extent2d_from_component_slot(slot);
     {
       int width = extent.w;
       int height = extent.h;
@@ -2125,7 +2069,7 @@ draw_border_component(enum component_slot slot){
           
           /* title */
           {
-            GtkWidget *label = find_widget_by_type(ctx.header, HEADER_TITLE).widget;
+            GtkWidget *label = find_widget_by_type(ctx.header, HEADER_TITLE);
             
             GtkAllocation allocation;
             gtk_widget_get_allocation(label, &allocation);
@@ -2182,11 +2126,7 @@ draw_border_component(enum component_slot slot){
 
 static void
 draw_title_bar(void){
-  enum libdecor_window_state state;
+  enum libdecor_window_state state = ctx.frame_window_state;
-  GtkStyleContext *style;
-  
-  state = ctx.frame_window_state;
-  style = gtk_widget_get_style_context(ctx.window);
   
   if (!(state & LIBDECOR_WINDOW_STATE_ACTIVE)){
     gtk_widget_set_state_flags(ctx.window, GTK_STATE_FLAG_BACKDROP, true);
@@ -2194,14 +2134,13 @@ draw_title_bar(void){
   else{
     gtk_widget_unset_state_flags(ctx.window, GTK_STATE_FLAG_BACKDROP);
   }
-  
+  GtkStyleContext *style = gtk_widget_get_style_context(ctx.window);
   if (!(ctx.frame_window_state & LIBDECOR_WINDOW_STATE_NON_FLOATING)){
     gtk_style_context_remove_class(style, "maximized");
   }
   else{
     gtk_style_context_add_class(style, "maximized");
   }
-  
   gtk_widget_show_all(ctx.window);
   
   int pref_width;
@@ -2327,8 +2266,9 @@ update_touch_focus(struct seat *seat, wl_fixed_t x, wl_fixed_t y){
     struct header_element_data new_focus = get_header_focus(GTK_HEADER_BAR(ctx.header), wl_fixed_to_int(x), wl_fixed_to_int(y));
     if (ctx.hdr_focus.widget != new_focus.widget){
       ctx.hdr_focus = new_focus;
+      ctx.hdr_state = 0;
     }
-    ctx.hdr_focus.state |= GTK_STATE_FLAG_PRELIGHT;
+    ctx.hdr_state |= GTK_STATE_FLAG_PRELIGHT;
     draw_title_bar();
     wl_surface_commit(ctx.wl_surface);
   }

digesting_libdecor.h

@@ -146,11 +146,9 @@ enum titlebar_gesture_state {
   TITLEBAR_GESTURE_STATE_DISCARDED,
 };
 
-struct header_element_data {
+struct header_element_data{
-  const char *name;
   enum header_element type;
   GtkWidget *widget;
-  GtkStateFlags state;
 };
 
 enum decoration_type {
@@ -253,8 +251,6 @@ enum titlebar_gesture {
 void libdecor_frame_show_window_menu(struct wl_seat *wl_seat, uint32_t serial, int x, int y);
 
 void libdecor_frame_commit(void);
-void libdecor_frame_set_fullscreen(struct wl_output *output);
-void libdecor_frame_unset_fullscreen(void);
 
 // #include "libdecor-cairo-blur.h"
 
@@ -281,8 +277,6 @@ static void do_map(void);
 
 static const char *libdecor_gtk_proxy_tag = "libdecor-gtk";
 
-static void libdecor_plugin_gtk_frame_free(void);
-static void libdecor_plugin_gtk_frame_commit(void);
 static Sides2D border_size_from_window_state(enum libdecor_window_state window_state);
 
 static struct wl_cursor* wl_cursor_from_pos(int x, int y);
@@ -386,6 +380,7 @@ typedef struct Ctx{
   GtkWidget *window;
   GtkWidget *header;
   struct header_element_data hdr_focus;
+  GtkStateFlags              hdr_state;
   
   cairo_surface_t *shadow_blur;