[gtk+/wip/baedert/gl: 39/39] widgetbowl: Only use one widget type

[Timm Bäder <baedert src gnome org>]

commit 3948d8dae3c3c38f0d3e04102ffda89590af5511
Author: Timm Bäder <mail baedert org>
Date:   Fri Nov 24 12:50:47 2017 +0100

    widgetbowl: Only use one widget type
    
    Every added widget having a separate random widget type makes it useless
    to use the widgetbowl demo for any sort of performance comparison.
    Instead. use only one widget type for all the moving children but make
    that changable.

 demos/gtk-demo/widgetbowl.c |  192 ++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 170 insertions(+), 22 deletions(-)
---
diff --git a/demos/gtk-demo/widgetbowl.c b/demos/gtk-demo/widgetbowl.c
index 3cc3874..5b63531 100644
--- a/demos/gtk-demo/widgetbowl.c
+++ b/demos/gtk-demo/widgetbowl.c
@@ -9,12 +9,74 @@
 
 #include "gtkfishbowl.h"
 
-GtkWidget *allow_changes;
+GtkWidget *fishbowl;
+
+static GtkWidget *
+create_button (void)
+{
+  return gtk_button_new_with_label ("Button");;
+}
+
+static GtkWidget *
+create_font_button (void)
+{
+  return gtk_font_button_new ();
+}
+
+static GtkWidget *
+create_level_bar (void)
+{
+  GtkWidget *w = gtk_level_bar_new_for_interval (0, 100);
+
+  gtk_level_bar_set_value (GTK_LEVEL_BAR (w), 50);
+
+  /* Force them to be a bit larger */
+  gtk_widget_set_size_request (w, 200, -1);
+
+  return w;
+}
+
+static const struct {
+  const char *name;
+  GtkWidget * (*create_func) (void);
+} widget_types[] = {
+  { "Button",     create_button      },
+  { "Fontbutton", create_font_button },
+  { "Levelbar"  , create_level_bar   }
+};
+
+static int selected_widget_type = -1;
+static const int N_WIDGET_TYPES = G_N_ELEMENTS (widget_types);
 
 #define N_STATS 5
 
 #define STATS_UPDATE_TIME G_USEC_PER_SEC
 
+static void
+set_widget_type (GtkWidget *headerbar,
+                 int        widget_type_index)
+{
+  GList *children, *l;
+
+  if (widget_type_index == selected_widget_type)
+    return;
+
+  /* Remove everything */
+  children = gtk_container_get_children (GTK_CONTAINER (fishbowl));
+  for (l = children; l; l = l->next)
+    {
+      gtk_container_remove (GTK_CONTAINER (fishbowl), (GtkWidget*)l->data);
+    }
+
+  g_list_free (children);
+
+  selected_widget_type = widget_type_index;
+
+  gtk_header_bar_set_title (GTK_HEADER_BAR (headerbar),
+                            widget_types[selected_widget_type].name);
+}
+
+
 typedef struct _Stats Stats;
 struct _Stats {
   gint64 last_stats;
@@ -69,7 +131,7 @@ do_stats (GtkWidget *widget,
         {
           n_frames += stats->frame_counter[i];
         }
-      
+
       new_label = g_strdup_printf ("widgets - %.1f fps",
                                    (double) G_USEC_PER_SEC * n_frames
                                        / (N_STATS * STATS_UPDATE_TIME));
@@ -96,7 +158,7 @@ do_stats (GtkWidget *widget,
       stats->frame_counter[stats->stats_index] = 0;
       stats->item_counter[stats->stats_index] = stats->item_counter[(stats->stats_index + N_STATS - 1) % 
N_STATS];
       stats->last_stats = frame_time;
-      
+
       if (suggested_change)
         *suggested_change = stats->last_suggestion;
       else
@@ -129,18 +191,74 @@ move_fish (GtkWidget     *bowl,
            gpointer       info_label)
 {
   gint suggested_change = 0;
-  
-  do_stats (bowl,
-            info_label,
-            !gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (allow_changes)) ? &suggested_change : NULL);
 
-  gtk_fishbowl_set_count (GTK_FISHBOWL (bowl),
-                          gtk_fishbowl_get_count (GTK_FISHBOWL (bowl)) + suggested_change);
+  do_stats (bowl, info_label, &suggested_change);
+
+  if (suggested_change > 0)
+    {
+      int i;
+
+      for (i = 0; i < suggested_change; i ++)
+        {
+          GtkWidget *new_widget = widget_types[selected_widget_type].create_func ();
+
+          gtk_container_add (GTK_CONTAINER (fishbowl), new_widget);
+
+        }
+    }
+  else if (suggested_change < 0)
+    {
+      GList *children, *l;
+      int n_removed = 0;
+
+      children = gtk_container_get_children (GTK_CONTAINER (fishbowl));
+      for (l = children; l; l = l->next)
+        {
+          gtk_container_remove (GTK_CONTAINER (fishbowl), (GtkWidget *)l->data);
+          n_removed ++;
+
+          if (n_removed >= (-suggested_change))
+            break;
+        }
+
+      g_list_free (children);
+    }
+
   stats_update (bowl);
 
   return G_SOURCE_CONTINUE;
 }
 
+static void
+next_button_clicked_cb (GtkButton *source,
+                        gpointer   user_data)
+{
+  GtkWidget *headerbar = user_data;
+  int new_index;
+
+  if (selected_widget_type + 1 >= N_WIDGET_TYPES)
+    new_index = 0;
+  else
+    new_index = selected_widget_type + 1;
+
+  set_widget_type (headerbar, new_index);
+}
+
+static void
+prev_button_clicked_cb (GtkButton *source,
+                        gpointer   user_data)
+{
+  GtkWidget *headerbar = user_data;
+  int new_index;
+
+  if (selected_widget_type - 1 < 0)
+    new_index = N_WIDGET_TYPES - 1;
+  else
+    new_index = selected_widget_type - 1;
+
+  set_widget_type (headerbar, new_index);
+}
+
 GtkWidget *
 do_widgetbowl (GtkWidget *do_widget)
 {
@@ -148,25 +266,55 @@ do_widgetbowl (GtkWidget *do_widget)
 
   if (!window)
     {
-      GtkBuilder *builder;
-      GtkWidget *bowl, *info_label;
-
-      g_type_ensure (GTK_TYPE_FISHBOWL);
-
-      builder = gtk_builder_new_from_resource ("/fishbowl/fishbowl.ui");
-      gtk_builder_connect_signals (builder, NULL);
-      window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
-      bowl = GTK_WIDGET (gtk_builder_get_object (builder, "bowl"));
-      gtk_fishbowl_set_use_icons (GTK_FISHBOWL (bowl), FALSE);
-      info_label = GTK_WIDGET (gtk_builder_get_object (builder, "info_label"));
-      allow_changes = GTK_WIDGET (gtk_builder_get_object (builder, "changes_allow"));
+      GtkWidget *info_label;
+      GtkWidget *count_label;
+      GtkWidget *titlebar;
+      GtkWidget *title_box;
+      GtkWidget *left_box;
+      GtkWidget *next_button;
+      GtkWidget *prev_button;
+
+      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+      titlebar = gtk_header_bar_new ();
+      gtk_header_bar_set_show_close_button (GTK_HEADER_BAR (titlebar), TRUE);
+      info_label = gtk_label_new ("widget - 00.0 fps");
+      count_label = gtk_label_new ("0");
+      fishbowl = gtk_fishbowl_new ();
+      title_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+      prev_button = gtk_button_new_from_icon_name ("pan-start-symbolic");
+      next_button = gtk_button_new_from_icon_name ("pan-end-symbolic");
+      left_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+
+      g_object_bind_property (fishbowl, "count", count_label, "label", 0);
+      g_signal_connect (next_button, "clicked", G_CALLBACK (next_button_clicked_cb), titlebar);
+      g_signal_connect (prev_button, "clicked", G_CALLBACK (prev_button_clicked_cb), titlebar);
+
+      gtk_fishbowl_set_animating (GTK_FISHBOWL (fishbowl), TRUE);
+
+      gtk_widget_set_hexpand (title_box, TRUE);
+      gtk_widget_set_halign (title_box, GTK_ALIGN_END);
+
+      gtk_window_set_titlebar (GTK_WINDOW (window), titlebar);
+      gtk_container_add (GTK_CONTAINER (title_box), count_label);
+      gtk_container_add (GTK_CONTAINER (title_box), info_label);
+      gtk_header_bar_pack_end (GTK_HEADER_BAR (titlebar), title_box);
+      gtk_container_add (GTK_CONTAINER (window), fishbowl);
+
+
+      gtk_style_context_add_class (gtk_widget_get_style_context (left_box), "linked");
+      gtk_container_add (GTK_CONTAINER (left_box), prev_button);
+      gtk_container_add (GTK_CONTAINER (left_box), next_button);
+      gtk_header_bar_pack_start (GTK_HEADER_BAR (titlebar), left_box);
+
       gtk_window_set_display (GTK_WINDOW (window),
                               gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
 
       gtk_widget_realize (window);
-      gtk_widget_add_tick_callback (bowl, move_fish, info_label, NULL);
+      gtk_widget_add_tick_callback (fishbowl, move_fish, info_label, NULL);
+
+      set_widget_type (titlebar, 0);
     }
 
   if (!gtk_widget_get_visible (window))