Really remove the droppings when there are no pages

[wxWidgets.git] / src / gtk / win_gtk.c

diff --git a/src/gtk/win_gtk.c b/src/gtk/win_gtk.c
index d2d3ecdec5c6d3d8f9ed4f9860f32759a0deffea..526fd5e116dda679fcca77a2d3ab08135b0abace 100644 (file)
--- a/src/gtk/win_gtk.c
+++ b/src/gtk/win_gtk.c
@@ -1,12 +1,12 @@
 /* ///////////////////////////////////////////////////////////////////////////
 // Name:        win_gtk.c
 /* ///////////////////////////////////////////////////////////////////////////
 // Name:        win_gtk.c

-// Purpose:     Native GTK+ widget for wxWindows, based on GtkLayout and
+// Purpose:     Native GTK+ widget for wxWidgets, based on GtkLayout and

 //              GtkFixed. It makes use of the gravity window property and
 //              therefore does not work with GTK 1.0.
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 //              GtkFixed. It makes use of the gravity window property and
 //              therefore does not work with GTK 1.0.
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling

-// Licence:     wxWindows licence
+// Licence:     wxWidgets licence

 /////////////////////////////////////////////////////////////////////////// */
 
 #ifdef VMS
 /////////////////////////////////////////////////////////////////////////// */
 
 #ifdef VMS


@@ -60,6 +60,8 @@ static void gtk_pizza_draw          (GtkWidget        *widget,
 #endif /* __WXGTK20__ */
 static gint gtk_pizza_expose        (GtkWidget        *widget,
                                      GdkEventExpose   *event);
 #endif /* __WXGTK20__ */
 static gint gtk_pizza_expose        (GtkWidget        *widget,
                                      GdkEventExpose   *event);

+static void gtk_pizza_style_set     (GtkWidget *widget,
+                                     GtkStyle  *previous_style);

 static void gtk_pizza_add           (GtkContainer     *container,
                                      GtkWidget        *widget);
 static void gtk_pizza_remove        (GtkContainer     *container,
 static void gtk_pizza_add           (GtkContainer     *container,
                                      GtkWidget        *widget);
 static void gtk_pizza_remove        (GtkContainer     *container,


@@ -68,19 +70,17 @@ static void gtk_pizza_forall        (GtkContainer     *container,
                                      gboolean          include_internals,
                                      GtkCallback       callback,
                                      gpointer          callback_data);
                                      gboolean          include_internals,
                                      GtkCallback       callback,
                                      gpointer          callback_data);

+                                     

 static void     gtk_pizza_allocate_child     (GtkPizza      *pizza,
                                               GtkPizzaChild *child);
 static void     gtk_pizza_allocate_child     (GtkPizza      *pizza,
                                               GtkPizzaChild *child);

+static void     gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
+                                                      gpointer   cb_data);

 
 

+#ifndef __WXGTK20__

 static void     gtk_pizza_position_child     (GtkPizza      *pizza,
                                               GtkPizzaChild *child);
 static void     gtk_pizza_position_child     (GtkPizza      *pizza,
                                               GtkPizzaChild *child);

-#ifndef __WXGTK20__

 static void     gtk_pizza_position_children  (GtkPizza      *pizza);
 
 static void     gtk_pizza_position_children  (GtkPizza      *pizza);
 

-static void     gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
-                                                      gpointer   cb_data);
-static void     gtk_pizza_adjust_allocations         (GtkPizza  *pizza,
-                                                      gint       dx,
-                                                      gint       dy);

 static GdkFilterReturn gtk_pizza_filter      (GdkXEvent      *gdk_xevent,
                                               GdkEvent       *event,
                                               gpointer        data);
 static GdkFilterReturn gtk_pizza_filter      (GdkXEvent      *gdk_xevent,
                                               GdkEvent       *event,
                                               gpointer        data);


@@ -104,10 +104,10 @@ static GtkContainerClass *pizza_parent_class = NULL;
 
 static gboolean gravity_works;
 
 
 static gboolean gravity_works;
 

-guint
+GtkType

 gtk_pizza_get_type ()
 {
 gtk_pizza_get_type ()
 {

-    static guint pizza_type = 0;
+    static GtkType pizza_type = 0;

 
     if (!pizza_type)
     {
 
     if (!pizza_type)
     {


@@ -145,6 +145,47 @@ gtk_pizza_get_type ()
     return pizza_type;
 }
 
     return pizza_type;
 }
 

+#if __WXGTK20__
+/* Marshaller needed for set_scroll_adjustments signal,
+   generated with GLib-2.4.6 glib-genmarshal */
+#define g_marshal_value_peek_object(v)   g_value_get_object (v)
+static void
+g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure     *closure,
+                                             GValue       *return_value,
+                                             guint         n_param_values,
+                                             const GValue *param_values,
+                                             gpointer      invocation_hint,
+                                             gpointer      marshal_data)
+{
+  typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer     data1,
+                                                    gpointer     arg_1,
+                                                    gpointer     arg_2,
+                                                    gpointer     data2);
+  register GMarshalFunc_VOID__OBJECT_OBJECT callback;
+  register GCClosure *cc = (GCClosure*) closure;
+  register gpointer data1, data2;
+
+  g_return_if_fail (n_param_values == 3);
+
+  if (G_CCLOSURE_SWAP_DATA (closure))
+    {
+      data1 = closure->data;
+      data2 = g_value_peek_pointer (param_values + 0);
+    }
+  else
+    {
+      data1 = g_value_peek_pointer (param_values + 0);
+      data2 = closure->data;
+    }
+  callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);
+
+  callback (data1,
+            g_marshal_value_peek_object (param_values + 1),
+            g_marshal_value_peek_object (param_values + 2),
+            data2);
+}
+#endif /* __WXGTK20__ */
+

 static void
 gtk_pizza_class_init (GtkPizzaClass *klass)
 {
 static void
 gtk_pizza_class_init (GtkPizzaClass *klass)
 {


@@ -166,6 +207,7 @@ gtk_pizza_class_init (GtkPizzaClass *klass)
     widget_class->draw = gtk_pizza_draw;
 #endif
     widget_class->expose_event = gtk_pizza_expose;
     widget_class->draw = gtk_pizza_draw;
 #endif
     widget_class->expose_event = gtk_pizza_expose;

+    widget_class->style_set = gtk_pizza_style_set;

 
     container_class->add = gtk_pizza_add;
     container_class->remove = gtk_pizza_remove;
 
     container_class->add = gtk_pizza_add;
     container_class->remove = gtk_pizza_remove;


@@ -176,16 +218,27 @@ gtk_pizza_class_init (GtkPizzaClass *klass)
     klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments;
 
     widget_class->set_scroll_adjustments_signal =
     klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments;
 
     widget_class->set_scroll_adjustments_signal =

+#if __WXGTK20__
+        g_signal_new(
+            "set_scroll_adjustments",
+            G_TYPE_FROM_CLASS(object_class),
+            G_SIGNAL_RUN_LAST,
+            G_STRUCT_OFFSET(GtkPizzaClass, set_scroll_adjustments),
+            NULL,
+            NULL,
+            g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
+            G_TYPE_NONE,
+            2,
+            GTK_TYPE_ADJUSTMENT,
+            GTK_TYPE_ADJUSTMENT);
+#else

     gtk_signal_new ("set_scroll_adjustments",
                     GTK_RUN_LAST,
     gtk_signal_new ("set_scroll_adjustments",
                     GTK_RUN_LAST,

-#ifdef __WXGTK20__
-                    GTK_CLASS_TYPE(object_class),
-#else

                     object_class->type,
                     object_class->type,

-#endif

                     GTK_SIGNAL_OFFSET (GtkPizzaClass, set_scroll_adjustments),
                     gtk_marshal_NONE__POINTER_POINTER,
                     GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
                     GTK_SIGNAL_OFFSET (GtkPizzaClass, set_scroll_adjustments),
                     gtk_marshal_NONE__POINTER_POINTER,
                     GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);

+#endif /* __WXGTK20__ */

 }
 
 static GtkType
 }
 
 static GtkType


@@ -312,11 +365,11 @@ gtk_pizza_put (GtkPizza   *pizza,
 
     pizza->children = g_list_append (pizza->children, child_info);
 
 
     pizza->children = g_list_append (pizza->children, child_info);
 

-    gtk_widget_set_parent (widget, GTK_WIDGET (pizza));
-

     if (GTK_WIDGET_REALIZED (pizza))
       gtk_widget_set_parent_window (widget, pizza->bin_window);
 
     if (GTK_WIDGET_REALIZED (pizza))
       gtk_widget_set_parent_window (widget, pizza->bin_window);
 

+    gtk_widget_set_parent (widget, GTK_WIDGET (pizza));
+

 #ifndef __WXGTK20__ /* FIXME? */
     if (!IS_ONSCREEN (x, y))
        GTK_PRIVATE_SET_FLAG (widget, GTK_IS_OFFSCREEN);
 #ifndef __WXGTK20__ /* FIXME? */
     if (!IS_ONSCREEN (x, y))
        GTK_PRIVATE_SET_FLAG (widget, GTK_IS_OFFSCREEN);


@@ -351,7 +404,7 @@ gtk_pizza_move (GtkPizza     *pizza,
 
             child->x = x;
             child->y = y;
 
             child->x = x;
             child->y = y;

-
+            

             if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza))
                 gtk_widget_queue_resize (widget);
             break;
             if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza))
                 gtk_widget_queue_resize (widget);
             break;


@@ -589,7 +642,7 @@ gtk_pizza_realize (GtkWidget *widget)
     widget->style = gtk_style_attach (widget->style, widget->window);
     gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
     gtk_style_set_background (widget->style, pizza->bin_window, GTK_STATE_NORMAL );
     widget->style = gtk_style_attach (widget->style, widget->window);
     gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
     gtk_style_set_background (widget->style, pizza->bin_window, GTK_STATE_NORMAL );

-    
+ 

 /*
     gdk_window_set_back_pixmap( widget->window, NULL, FALSE );
     gdk_window_set_back_pixmap( pizza->bin_window, NULL, FALSE );
 /*
     gdk_window_set_back_pixmap( widget->window, NULL, FALSE );
     gdk_window_set_back_pixmap( pizza->bin_window, NULL, FALSE );


@@ -709,7 +762,9 @@ gtk_pizza_size_allocate (GtkWidget     *widget,
         child = children->data;
         children = children->next;
 
         child = children->data;
         children = children->next;
 

+#ifndef __WXGTK20__

         gtk_pizza_position_child (pizza, child);
         gtk_pizza_position_child (pizza, child);

+#endif

         gtk_pizza_allocate_child (pizza, child);
     }
 }
         gtk_pizza_allocate_child (pizza, child);
     }
 }


@@ -759,9 +814,11 @@ gtk_pizza_expose (GtkWidget      *widget,
                   GdkEventExpose *event)
 {
     GtkPizza *pizza;
                   GdkEventExpose *event)
 {
     GtkPizza *pizza;

+#ifndef __WXGTK20__

     GtkPizzaChild *child;
     GdkEventExpose child_event;
     GList *children;
     GtkPizzaChild *child;
     GdkEventExpose child_event;
     GList *children;

+#endif

 
     g_return_val_if_fail (widget != NULL, FALSE);
     g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE);
 
     g_return_val_if_fail (widget != NULL, FALSE);
     g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE);


@@ -805,6 +862,18 @@ gtk_pizza_expose (GtkWidget      *widget,
 #endif
 }
 
 #endif
 }
 

+static void
+gtk_pizza_style_set(GtkWidget *widget, GtkStyle  *previous_style)
+{
+    if (GTK_WIDGET_REALIZED(widget))
+    {
+        gtk_style_set_background(widget->style, widget->window, GTK_STATE_NORMAL);
+        gtk_style_set_background(widget->style, GTK_PIZZA(widget)->bin_window, GTK_STATE_NORMAL );
+    }
+
+    (* GTK_WIDGET_CLASS (pizza_parent_class)->style_set) (widget, previous_style);
+}
+

 static void
 gtk_pizza_add (GtkContainer *container,
                GtkWidget    *widget)
 static void
 gtk_pizza_add (GtkContainer *container,
                GtkWidget    *widget)


@@ -902,57 +971,6 @@ gtk_pizza_allocate_child (GtkPizza      *pizza,
     gtk_widget_size_allocate (child->widget, &allocation);
 }
 
     gtk_widget_size_allocate (child->widget, &allocation);
 }
 

-static void
-gtk_pizza_position_child (GtkPizza      *pizza,
-                          GtkPizzaChild *child)
-{
-    gint x;
-    gint y;
-
-    x = child->x - pizza->xoffset;
-    y = child->y - pizza->yoffset;
-
-#ifndef __WXGTK20__
-    if (IS_ONSCREEN (x,y))
-    {
-        if (GTK_WIDGET_MAPPED (pizza) &&
-          GTK_WIDGET_VISIBLE (child->widget))
-        {
-            if (!GTK_WIDGET_MAPPED (child->widget))
-                gtk_widget_map (child->widget);
-        }
-
-        if (GTK_WIDGET_IS_OFFSCREEN (child->widget))
-            GTK_PRIVATE_UNSET_FLAG (child->widget, GTK_IS_OFFSCREEN);
-    }
-    else
-    {
-        if (!GTK_WIDGET_IS_OFFSCREEN (child->widget))
-            GTK_PRIVATE_SET_FLAG (child->widget, GTK_IS_OFFSCREEN);
-
-        if (GTK_WIDGET_MAPPED (child->widget))
-            gtk_widget_unmap (child->widget);
-    }
-#endif
-}
-
-#ifndef __WXGTK20__
-
-static void
-gtk_pizza_position_children (GtkPizza *pizza)
-{
-    GList *tmp_list;
-
-    tmp_list = pizza->children;
-    while (tmp_list)
-    {
-        GtkPizzaChild *child = tmp_list->data;
-        tmp_list = tmp_list->next;
-
-        gtk_pizza_position_child (pizza, child);
-    }
-}
-

 static void
 gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
                                        gpointer   cb_data)
 static void
 gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
                                        gpointer   cb_data)


@@ -1000,8 +1018,55 @@ gtk_pizza_adjust_allocations (GtkPizza *pizza,
     }
 }
 
     }
 }
 

-/* This function is used to find events to process while scrolling */
+#ifndef __WXGTK20__
+static void
+gtk_pizza_position_child (GtkPizza      *pizza,
+                          GtkPizzaChild *child)
+{
+    gint x;
+    gint y;
+
+    x = child->x - pizza->xoffset;
+    y = child->y - pizza->yoffset;
+
+    if (IS_ONSCREEN (x,y))
+    {
+        if (GTK_WIDGET_MAPPED (pizza) &&
+          GTK_WIDGET_VISIBLE (child->widget))
+        {
+            if (!GTK_WIDGET_MAPPED (child->widget))
+                gtk_widget_map (child->widget);
+        }
+
+        if (GTK_WIDGET_IS_OFFSCREEN (child->widget))
+            GTK_PRIVATE_UNSET_FLAG (child->widget, GTK_IS_OFFSCREEN);
+    }
+    else
+    {
+        if (!GTK_WIDGET_IS_OFFSCREEN (child->widget))
+            GTK_PRIVATE_SET_FLAG (child->widget, GTK_IS_OFFSCREEN);
+
+        if (GTK_WIDGET_MAPPED (child->widget))
+            gtk_widget_unmap (child->widget);
+    }
+}
+
+static void
+gtk_pizza_position_children (GtkPizza *pizza)
+{
+    GList *tmp_list;
+
+    tmp_list = pizza->children;
+    while (tmp_list)
+    {
+        GtkPizzaChild *child = tmp_list->data;
+        tmp_list = tmp_list->next;
+
+        gtk_pizza_position_child (pizza, child);
+    }
+}

 
 

+/* This function is used to find events to process while scrolling */

 static Bool
 gtk_pizza_expose_predicate (Display *display,
                   XEvent  *xevent,
 static Bool
 gtk_pizza_expose_predicate (Display *display,
                   XEvent  *xevent,


@@ -1014,6 +1079,7 @@ gtk_pizza_expose_predicate (Display *display,
     else
         return False;
 }
     else
         return False;
 }

+#endif /* __WXGTK20__ */

 
 /* This is the main routine to do the scrolling. Scrolling is
  * done by "Guffaw" scrolling, as in the Mozilla XFE, with
 
 /* This is the main routine to do the scrolling. Scrolling is
  * done by "Guffaw" scrolling, as in the Mozilla XFE, with


@@ -1030,6 +1096,15 @@ gtk_pizza_expose_predicate (Display *display,
 void
 gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
 {
 void
 gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
 {

+#ifdef __WXGTK20__
+    pizza->xoffset += dx;
+    pizza->yoffset += dy;
+
+    gtk_pizza_adjust_allocations (pizza, -dx, -dy);
+
+    if (pizza->bin_window)
+        gdk_window_scroll( pizza->bin_window, -dx, -dy );
+#else

     GtkWidget *widget;
     XEvent xevent;
     XID win;
     GtkWidget *widget;
     XEvent xevent;
     XID win;


@@ -1161,8 +1236,11 @@ gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
             }
         }
     }
             }
         }
     }

+#endif /* __WXGTK20__ */

 }
 
 }
 

+
+#ifndef __WXGTK20__

 /* The main event filter. Actually, we probably don't really need
  * to install this as a filter at all, since we are calling it
  * directly above in the expose-handling hack. But in case scrollbars
 /* The main event filter. Actually, we probably don't really need
  * to install this as a filter at all, since we are calling it
  * directly above in the expose-handling hack. But in case scrollbars


@@ -1250,7 +1328,6 @@ gtk_pizza_main_filter (GdkXEvent *gdk_xevent,
 
     return GDK_FILTER_CONTINUE;
 }
 
     return GDK_FILTER_CONTINUE;
 }

-

 #endif /* __WXGTK20__ */
 
 
 #endif /* __WXGTK20__ */