Fix for problem when Realize is re-called on a vertical toolbar, it

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

diff --git a/src/gtk/win_gtk.c b/src/gtk/win_gtk.c
index cd3e794936f2f570530808adcd13221db5264d57..09bd29432c4c15404f33ae8c7fddd555fccb9d87 100644 (file)
--- a/src/gtk/win_gtk.c
+++ b/src/gtk/win_gtk.c
@@ -1,5 +1,5 @@
 /* ///////////////////////////////////////////////////////////////////////////
 /* ///////////////////////////////////////////////////////////////////////////

-// Name:        win_gtk.c
+// Name:        src/gtk/win_gtk.c

 // 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.
 // 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.


@@ -13,18 +13,33 @@
 #define XCheckIfEvent XCHECKIFEVENT
 #endif
 
 #define XCheckIfEvent XCHECKIFEVENT
 #endif
 

-#include "wx/setup.h"
+#include "wx/platform.h"

 #include "wx/gtk/win_gtk.h"
 #include "wx/gtk/win_gtk.h"

-#include "gtk/gtksignal.h"
-#include "gtk/gtkprivate.h"
-#include "gdk/gdkx.h"

 
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
 
 
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
 

+typedef struct _GtkPizzaChild GtkPizzaChild;
+typedef struct _GtkPizzaClass GtkPizzaClass;

 typedef struct _GtkPizzaAdjData  GtkPizzaAdjData;
 
 typedef struct _GtkPizzaAdjData  GtkPizzaAdjData;
 

+struct _GtkPizzaClass
+{
+  GtkContainerClass parent_class;
+
+  void  (*set_scroll_adjustments)   (GtkPizza     *pizza,
+                                     GtkAdjustment  *hadjustment,
+                                     GtkAdjustment  *vadjustment);
+};
+
+struct _GtkPizzaChild
+{
+    GtkWidget *widget;
+    gint x;
+    gint y;
+};
+

 struct _GtkPizzaAdjData
 {
     gint dx;
 struct _GtkPizzaAdjData
 {
     gint dx;


@@ -43,8 +58,6 @@ static void gtk_pizza_size_request  (GtkWidget        *widget,
                                      GtkRequisition   *requisition);
 static void gtk_pizza_size_allocate (GtkWidget        *widget,
                                      GtkAllocation    *allocation);
                                      GtkRequisition   *requisition);
 static void gtk_pizza_size_allocate (GtkWidget        *widget,
                                      GtkAllocation    *allocation);

-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,
 static void gtk_pizza_style_set     (GtkWidget *widget,
                                      GtkStyle  *previous_style);
 static void gtk_pizza_add           (GtkContainer     *container,


@@ -67,8 +80,7 @@ static void  gtk_pizza_scroll_set_adjustments (GtkPizza      *pizza,
                                                GtkAdjustment *hadj,
                                                GtkAdjustment *vadj);
 
                                                GtkAdjustment *hadj,
                                                GtkAdjustment *vadj);
 

-/* static */
-GtkContainerClass *pizza_parent_class = NULL;
+static GtkWidgetClass* pizza_parent_class;

 
 GtkType
 gtk_pizza_get_type ()
 
 GtkType
 gtk_pizza_get_type ()


@@ -88,6 +100,7 @@ gtk_pizza_get_type ()
             sizeof (GtkPizza),
             16,             /* n_preallocs */
             (GInstanceInitFunc) gtk_pizza_init,
             sizeof (GtkPizza),
             16,             /* n_preallocs */
             (GInstanceInitFunc) gtk_pizza_init,

+            NULL

         };
         pizza_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPizza", &pizza_info, (GTypeFlags)0);
     }
         };
         pizza_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPizza", &pizza_info, (GTypeFlags)0);
     }


@@ -151,7 +164,6 @@ gtk_pizza_class_init (GtkPizzaClass *klass)
     widget_class->unrealize = gtk_pizza_unrealize;
     widget_class->size_request = gtk_pizza_size_request;
     widget_class->size_allocate = gtk_pizza_size_allocate;
     widget_class->unrealize = gtk_pizza_unrealize;
     widget_class->size_request = gtk_pizza_size_request;
     widget_class->size_allocate = gtk_pizza_size_allocate;

-    widget_class->expose_event = gtk_pizza_expose;

     widget_class->style_set = gtk_pizza_style_set;
 
     container_class->add = gtk_pizza_add;
     widget_class->style_set = gtk_pizza_style_set;
 
     container_class->add = gtk_pizza_add;


@@ -188,26 +200,12 @@ gtk_pizza_init (GtkPizza *pizza)
 {
     GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW);
 
 {
     GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW);
 

-    pizza->shadow_type = GTK_MYSHADOW_NONE;
-

     pizza->children = NULL;
 
     pizza->children = NULL;
 

-    pizza->width = 20;
-    pizza->height = 20;
-

     pizza->bin_window = NULL;
 
     pizza->bin_window = NULL;
 

-    pizza->xoffset = 0;
-    pizza->yoffset = 0;
-
-    pizza->configure_serial = 0;
-    pizza->scroll_x = 0;
-    pizza->scroll_y = 0;
-    pizza->visibility = GDK_VISIBILITY_PARTIAL;
-
-    pizza->clear_on_draw = TRUE;
-    pizza->use_filter = TRUE;
-    pizza->external_expose = FALSE;
+    pizza->m_xoffset = 0;
+    pizza->m_yoffset = 0;

 }
 
 GtkWidget*
 }
 
 GtkWidget*


@@ -215,66 +213,66 @@ gtk_pizza_new ()
 {
     GtkPizza *pizza;
 
 {
     GtkPizza *pizza;
 

-    pizza = gtk_type_new (gtk_pizza_get_type ());
+    pizza = g_object_new (gtk_pizza_get_type (), NULL);

 
     return GTK_WIDGET (pizza);
 }
 
 
     return GTK_WIDGET (pizza);
 }
 

-static void
-gtk_pizza_scroll_set_adjustments (GtkPizza     *pizza,
-                                    GtkAdjustment  *hadj,
-                                    GtkAdjustment  *vadj)
+gint       gtk_pizza_get_xoffset     (GtkPizza          *pizza)

 {
 {

-   /* We handle scrolling in the wxScrolledWindow, not here. */
+    g_return_val_if_fail ( (pizza != NULL), -1 );
+    g_return_val_if_fail ( (GTK_IS_PIZZA (pizza)), -1 );
+
+    return pizza->m_xoffset;

 }
 
 }
 

-void
-gtk_pizza_set_shadow_type (GtkPizza        *pizza,
-                           GtkMyShadowType  type)
+gint       gtk_pizza_get_yoffset     (GtkPizza          *pizza)

 {
 {

-    g_return_if_fail (pizza != NULL);
-    g_return_if_fail (GTK_IS_PIZZA (pizza));
+    g_return_val_if_fail ( (pizza != NULL), -1 );
+    g_return_val_if_fail ( (GTK_IS_PIZZA (pizza)), -1 );

 
 

-    if ((GtkMyShadowType) pizza->shadow_type != type)
-    {
-        pizza->shadow_type = type;
-
-        if (GTK_WIDGET_VISIBLE (pizza))
-        {
-            gtk_widget_size_allocate (GTK_WIDGET (pizza), &(GTK_WIDGET (pizza)->allocation));
-            gtk_widget_queue_draw (GTK_WIDGET (pizza));
-        }
-    }
+    return pizza->m_yoffset;

 }
 
 }
 

-void
-gtk_pizza_set_clear (GtkPizza  *pizza,
-                     gboolean   clear)
+void       gtk_pizza_set_xoffset     (GtkPizza          *pizza, gint xoffset)

 {
     g_return_if_fail (pizza != NULL);
     g_return_if_fail (GTK_IS_PIZZA (pizza));
 
 {
     g_return_if_fail (pizza != NULL);
     g_return_if_fail (GTK_IS_PIZZA (pizza));
 

-    pizza->clear_on_draw = clear;
+    pizza->m_xoffset = xoffset;
+    // do something

 }
 
 }
 

-void
-gtk_pizza_set_filter (GtkPizza  *pizza,
-                      gboolean   use)
+void       gtk_pizza_set_yoffset     (GtkPizza          *pizza, gint yoffset)

 {
     g_return_if_fail (pizza != NULL);
     g_return_if_fail (GTK_IS_PIZZA (pizza));
 
 {
     g_return_if_fail (pizza != NULL);
     g_return_if_fail (GTK_IS_PIZZA (pizza));
 

-    pizza->use_filter = use;
+    pizza->m_xoffset = yoffset;
+    // do something

 }
 
 }
 

-void
-gtk_pizza_set_external (GtkPizza  *pizza,
-                        gboolean   expose)
+gint       gtk_pizza_get_rtl_offset  (GtkPizza          *pizza)

 {
 {

-    g_return_if_fail (pizza != NULL);
-    g_return_if_fail (GTK_IS_PIZZA (pizza));
+    gint border;

 
 

-    pizza->external_expose = expose;
+    g_return_val_if_fail ( (pizza != NULL), 0 );
+    g_return_val_if_fail ( (GTK_IS_PIZZA (pizza)), 0 );
+    
+    if (!pizza->bin_window) return 0;
+    
+    border = pizza->container.border_width;
+        
+    return GTK_WIDGET(pizza)->allocation.width - border*2;
+}
+
+
+static void
+gtk_pizza_scroll_set_adjustments (GtkPizza     *pizza,
+                                    GtkAdjustment  *hadj,
+                                    GtkAdjustment  *vadj)
+{
+   /* We handle scrolling in the wxScrolledWindow, not here. */

 }
 
 void
 }
 
 void


@@ -296,87 +294,17 @@ gtk_pizza_put (GtkPizza   *pizza,
     child_info->widget = widget;
     child_info->x = x;
     child_info->y = y;
     child_info->widget = widget;
     child_info->x = x;
     child_info->y = y;

-    child_info->width = width;
-    child_info->height = height;

 
     pizza->children = g_list_append (pizza->children, child_info);
 
     if (GTK_WIDGET_REALIZED (pizza))
 
     pizza->children = g_list_append (pizza->children, child_info);
 
     if (GTK_WIDGET_REALIZED (pizza))

-      gtk_widget_set_parent_window (widget, pizza->bin_window);
+        gtk_widget_set_parent_window (widget, pizza->bin_window);

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

-    gtk_widget_set_usize (widget, width, height);
-}
-
-void
-gtk_pizza_move (GtkPizza     *pizza,
-                  GtkWidget  *widget,
-                  gint        x,
-                  gint        y)
-{
-    GtkPizzaChild *child;
-    GList *children;
-
-    g_return_if_fail (pizza != NULL);
-    g_return_if_fail (GTK_IS_PIZZA (pizza));
-    g_return_if_fail (widget != NULL);
-
-    children = pizza->children;
-    while (children)
-    {
-        child = children->data;
-        children = children->next;
-
-        if (child->widget == widget)
-        {
-            if ((child->x == x) && (child->y == y))
-                break;
-
-            child->x = x;
-            child->y = y;
-
-            if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza))
-                gtk_widget_queue_resize (widget);
-            break;
-        }
-    }
-}
-
-void
-gtk_pizza_resize (GtkPizza    *pizza,
-                  GtkWidget   *widget,
-                  gint         width,
-                  gint         height)
-{
-    GtkPizzaChild *child;
-    GList *children;
-
-    g_return_if_fail (pizza != NULL);
-    g_return_if_fail (GTK_IS_PIZZA (pizza));
-    g_return_if_fail (widget != NULL);
-
-    children = pizza->children;
-    while (children)
-    {
-        child = children->data;
-        children = children->next;
-
-        if (child->widget == widget)
-        {
-            if ((child->width == width) && (child->height == height))
-                break;
-
-            child->width = width;
-            child->height = height;
-
-            gtk_widget_set_usize (widget, width, height);
-
-            if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza))
-                gtk_widget_queue_resize (widget);
-            break;
-        }
-    }
+    gtk_widget_set_size_request( widget, width, height );
+    if (GTK_WIDGET_REALIZED (pizza))
+        gtk_pizza_allocate_child (pizza, child_info);

 }
 
 void
 }
 
 void


@@ -394,6 +322,16 @@ gtk_pizza_set_size (GtkPizza   *pizza,
     g_return_if_fail (GTK_IS_PIZZA (pizza));
     g_return_if_fail (widget != NULL);
 
     g_return_if_fail (GTK_IS_PIZZA (pizza));
     g_return_if_fail (widget != NULL);
 

+#ifndef WX_WARN_ILLEGAL_SETSIZE
+    /* this really shouldn't happen -- but it does, a lot, right now and we
+       can't pass negative values to gtk_widget_set_size_request() without getting
+       a warning printed out, so filter them out here */
+    if ( width < 0 )
+        width = 0;
+    if ( height < 0 )
+        height = 0;
+#endif
+

     children = pizza->children;
     while (children)
     {
     children = pizza->children;
     while (children)
     {


@@ -402,53 +340,16 @@ gtk_pizza_set_size (GtkPizza   *pizza,
 
         if (child->widget == widget)
         {
 
         if (child->widget == widget)
         {

-            if ((child->x == x) &&
-                (child->y == y) &&
-                (child->width == width) &&
-                (child->height == height)) return;
-

             child->x = x;
             child->y = y;
             child->x = x;
             child->y = y;

-            child->width = width;
-            child->height = height;
-
-            gtk_widget_set_usize (widget, width, height);

 
 

-            if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza))
-                gtk_widget_queue_resize (widget);
+            gtk_widget_set_size_request (widget, width, height);

 
             return;
         }
     }
 }
 
 
             return;
         }
     }
 }
 

-gint
-gtk_pizza_child_resized  (GtkPizza   *pizza,
-                          GtkWidget  *widget)
-{
-    GtkPizzaChild *child;
-    GList *children;
-
-    g_return_val_if_fail (pizza != NULL, FALSE);
-    g_return_val_if_fail (GTK_IS_PIZZA (pizza), FALSE);
-    g_return_val_if_fail (widget != NULL, FALSE);
-
-    children = pizza->children;
-    while (children)
-    {
-        child = children->data;
-        children = children->next;
-
-        if (child->widget == widget)
-        {
-            return ((child->width == widget->allocation.width) &&
-                    (child->height == widget->allocation.height));
-        }
-    }
-
-    return FALSE;
-}
-

 static void
 gtk_pizza_map (GtkWidget *widget)
 {
 static void
 gtk_pizza_map (GtkWidget *widget)
 {


@@ -469,8 +370,7 @@ gtk_pizza_map (GtkWidget *widget)
         children = children->next;
 
         if ( GTK_WIDGET_VISIBLE (child->widget) &&
         children = children->next;
 
         if ( GTK_WIDGET_VISIBLE (child->widget) &&

-            !GTK_WIDGET_MAPPED (child->widget) &&
-            TRUE)
+            !GTK_WIDGET_MAPPED (child->widget) )

         {
             gtk_widget_map (child->widget);
         }
         {
             gtk_widget_map (child->widget);
         }


@@ -488,6 +388,7 @@ gtk_pizza_realize (GtkWidget *widget)
     gint attributes_mask;
     GtkPizzaChild *child;
     GList *children;
     gint attributes_mask;
     GtkPizzaChild *child;
     GList *children;

+    int border;

 
     g_return_if_fail (widget != NULL);
     g_return_if_fail (GTK_IS_PIZZA (widget));
 
     g_return_if_fail (widget != NULL);
     g_return_if_fail (GTK_IS_PIZZA (widget));


@@ -502,29 +403,11 @@ gtk_pizza_realize (GtkWidget *widget)
     attributes.width = widget->allocation.width;
     attributes.height = widget->allocation.height;
 
     attributes.width = widget->allocation.width;
     attributes.height = widget->allocation.height;
 

-#ifndef __WXUNIVERSAL__
-    if (pizza->shadow_type == GTK_MYSHADOW_NONE)
-    {
-        /* no border, no changes to sizes */
-    }
-    else if (pizza->shadow_type == GTK_MYSHADOW_THIN)
-    {
-        /* GTK_MYSHADOW_THIN == wxSIMPLE_BORDER */
-        attributes.x += 1;
-        attributes.y += 1;
-        attributes.width -= 2;
-        attributes.height -= 2;
-    }
-    else
-    {
-        /* GTK_MYSHADOW_IN == wxSUNKEN_BORDER */
-        /* GTK_MYSHADOW_OUT == wxRAISED_BORDER */
-        attributes.x += 2;
-        attributes.y += 2;
-        attributes.width -= 4;
-        attributes.height -= 4;
-    }
-#endif /* __WXUNIVERSAL__ */
+    border = pizza->container.border_width;
+    attributes.x += border;
+    attributes.y += border;
+    attributes.width -= 2 * border;
+    attributes.height -= 2 * border;

 
     /* minimal size */
     if (attributes.width < 2) attributes.width = 2;
 
     /* minimal size */
     if (attributes.width < 2) attributes.width = 2;


@@ -598,8 +481,8 @@ gtk_pizza_unrealize (GtkWidget *widget)
     gdk_window_destroy (pizza->bin_window);
     pizza->bin_window = NULL;
 
     gdk_window_destroy (pizza->bin_window);
     pizza->bin_window = NULL;
 

-    if (GTK_WIDGET_CLASS (pizza_parent_class)->unrealize)
-       (* GTK_WIDGET_CLASS (pizza_parent_class)->unrealize) (widget);
+    if (pizza_parent_class->unrealize)
+        pizza_parent_class->unrealize(widget);

 }
 
 static void
 }
 
 static void


@@ -644,6 +527,7 @@ gtk_pizza_size_allocate (GtkWidget     *widget,
     gint x,y,w,h;
     GtkPizzaChild *child;
     GList *children;
     gint x,y,w,h;
     GtkPizzaChild *child;
     GList *children;

+    gboolean only_resize;

 
     g_return_if_fail (widget != NULL);
     g_return_if_fail (GTK_IS_PIZZA(widget));
 
     g_return_if_fail (widget != NULL);
     g_return_if_fail (GTK_IS_PIZZA(widget));


@@ -651,25 +535,29 @@ gtk_pizza_size_allocate (GtkWidget     *widget,
 
     pizza = GTK_PIZZA (widget);
 
 
     pizza = GTK_PIZZA (widget);
 

+    only_resize = ((widget->allocation.x == allocation->x) &&
+                   (widget->allocation.y == allocation->y));

     widget->allocation = *allocation;
 
     widget->allocation = *allocation;
 

-    if (pizza->shadow_type == GTK_MYSHADOW_NONE)
-        border = 0;
-    else
-    if (pizza->shadow_type == GTK_MYSHADOW_THIN)
-        border = 1;
-    else
-        border = 2;
-
+    border = pizza->container.border_width;
+    

     x = allocation->x + border;
     y = allocation->y + border;
     w = allocation->width - border*2;
     h = allocation->height - border*2;
     x = allocation->x + border;
     y = allocation->y + border;
     w = allocation->width - border*2;
     h = allocation->height - border*2;

+    if (w < 0)
+        w = 0;
+    if (h < 0)
+        h = 0;

 
     if (GTK_WIDGET_REALIZED (widget))
     {
 
     if (GTK_WIDGET_REALIZED (widget))
     {

-        gdk_window_move_resize( widget->window, x, y, w, h );
-        gdk_window_move_resize( pizza->bin_window, 0, 0, w, h );
+        if (only_resize)
+            gdk_window_resize( widget->window, w, h );
+        else
+            gdk_window_move_resize( widget->window, x, y, w, h );
+
+        gdk_window_resize( pizza->bin_window, w, h );

     }
 
     children = pizza->children;
     }
 
     children = pizza->children;


@@ -682,30 +570,6 @@ gtk_pizza_size_allocate (GtkWidget     *widget,
     }
 }
 
     }
 }
 

-static gint
-gtk_pizza_expose (GtkWidget      *widget,
-                  GdkEventExpose *event)
-{
-    GtkPizza *pizza;
-
-    g_return_val_if_fail (widget != NULL, FALSE);
-    g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE);
-    g_return_val_if_fail (event != NULL, FALSE);
-
-    pizza = GTK_PIZZA (widget);
-
-    if (event->window != pizza->bin_window)
-        return FALSE;
-
-    /* We handle all expose events in window.cpp now. */
-    if (pizza->external_expose)
-        return FALSE;
-
-    (* GTK_WIDGET_CLASS (pizza_parent_class)->expose_event) (widget, event);
-
-    return FALSE;
-}
-

 static void
 gtk_pizza_style_set(GtkWidget *widget, GtkStyle  *previous_style)
 {
 static void
 gtk_pizza_style_set(GtkWidget *widget, GtkStyle  *previous_style)
 {


@@ -715,7 +579,7 @@ gtk_pizza_style_set(GtkWidget *widget, GtkStyle  *previous_style)
         gtk_style_set_background(widget->style, GTK_PIZZA(widget)->bin_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);
+    pizza_parent_class->style_set(widget, previous_style);

 }
 
 static void
 }
 
 static void


@@ -802,12 +666,24 @@ gtk_pizza_allocate_child (GtkPizza      *pizza,
     GtkAllocation allocation;
     GtkRequisition requisition;
 
     GtkAllocation allocation;
     GtkRequisition requisition;
 

-    allocation.x = child->x - pizza->xoffset;
-    allocation.y = child->y - pizza->yoffset;
+    allocation.x = child->x - pizza->m_xoffset;
+    allocation.y = child->y - pizza->m_yoffset;

     gtk_widget_get_child_requisition (child->widget, &requisition);
     allocation.width = requisition.width;
     allocation.height = requisition.height;
 
     gtk_widget_get_child_requisition (child->widget, &requisition);
     allocation.width = requisition.width;
     allocation.height = requisition.height;
 

+    if (gtk_widget_get_direction( GTK_WIDGET(pizza) ) == GTK_TEXT_DIR_RTL)
+    {
+        /* reverse horizontal placement */
+        gint offset,border; 
+        
+        offset = GTK_WIDGET(pizza)->allocation.width;
+        border = pizza->container.border_width;
+        offset -= border*2;
+            
+        allocation.x = offset - child->x - allocation.width + pizza->m_xoffset; 
+    }
+    

     gtk_widget_size_allocate (child->widget, &allocation);
 }
 
     gtk_widget_size_allocate (child->widget, &allocation);
 }
 


@@ -858,24 +734,11 @@ gtk_pizza_adjust_allocations (GtkPizza *pizza,
     }
 }
 
     }
 }
 

-
-/* This is the main routine to do the scrolling. Scrolling is
- * done by "Guffaw" scrolling, as in the Mozilla XFE, with
- * a few modifications.
- *
- * The main improvement is that we keep track of whether we
- * are obscured or not. If not, we ignore the generated expose
- * events and instead do the exposes ourself, without having
- * to wait for a roundtrip to the server. This also provides
- * a limited form of expose-event compression, since we do
- * the affected area as one big chunk.
- */
-

 void
 gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
 {
 void
 gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
 {

-    pizza->xoffset += dx;
-    pizza->yoffset += dy;
+    pizza->m_xoffset += dx;
+    pizza->m_yoffset += dy;

 
     gtk_pizza_adjust_allocations (pizza, -dx, -dy);
 
 
     gtk_pizza_adjust_allocations (pizza, -dx, -dy);
 


@@ -886,4 +749,3 @@ gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

-