Add virtual ~wxAnyScrollHelperBase() to fix compiler warning.

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

diff --git a/src/gtk/win_gtk.cpp b/src/gtk/win_gtk.cpp
index b3aeed5a4a0242ebc0a5ea92c81d3b621e8cfddc..538305505d9f40497cc6d21b3baf53ead6d53b7a 100644 (file)
--- a/src/gtk/win_gtk.cpp
+++ b/src/gtk/win_gtk.cpp
@@ -2,15 +2,20 @@
 // Name:        src/gtk/win_gtk.cpp
 // Purpose:     native GTK+ widget for wxWindow
 // Author:      Paul Cornett
 // Name:        src/gtk/win_gtk.cpp
 // Purpose:     native GTK+ widget for wxWindow
 // Author:      Paul Cornett

-// Id:          $Id$

 // Copyright:   (c) 2007 Paul Cornett
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // Copyright:   (c) 2007 Paul Cornett
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 

+#include "wx/wxprec.h"
+

 #include "wx/defs.h"
 #include "wx/defs.h"

-#include "wx/gtk/private.h"
+
+#include <gtk/gtk.h>

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

+#include "wx/gtk/private.h"
+#include "wx/gtk/private/gtk2-compat.h"
+

 /*
 wxPizza is a custom GTK+ widget derived from GtkFixed.  A custom widget
 is needed to adapt GTK+ to wxWidgets needs in 3 areas: scrolling, window
 /*
 wxPizza is a custom GTK+ widget derived from GtkFixed.  A custom widget
 is needed to adapt GTK+ to wxWidgets needs in 3 areas: scrolling, window


@@ -19,8 +24,7 @@ borders, and RTL.
 For scrolling, the "set_scroll_adjustments" signal is implemented
 to make wxPizza appear scrollable to GTK+, allowing it to be put in a
 GtkScrolledWindow.  Child widget positions are adjusted for the scrolling
 For scrolling, the "set_scroll_adjustments" signal is implemented
 to make wxPizza appear scrollable to GTK+, allowing it to be put in a
 GtkScrolledWindow.  Child widget positions are adjusted for the scrolling

-position in size_allocate.  A second same-size GdkWindow is placed behind
-widget->window, to allow GDK to use a more efficient scrolling technique.
+position in size_allocate.

 
 For borders, space is reserved in realize and size_allocate.  The border is
 drawn on wxPizza's parent GdkWindow.
 
 For borders, space is reserved in realize and size_allocate.  The border is
 drawn on wxPizza's parent GdkWindow.


@@ -28,80 +32,78 @@ drawn on wxPizza's parent GdkWindow.
 For RTL, child widget positions are mirrored in size_allocate.
 */
 
 For RTL, child widget positions are mirrored in size_allocate.
 */
 

+struct wxPizzaChild
+{
+    GtkWidget* widget;
+    int x, y, width, height;
+};
+

 static GtkWidgetClass* parent_class;
 
 static GtkWidgetClass* parent_class;
 

-static inline GdkWindow* get_backing_window(GtkWidget* widget)
-{
-    GdkWindow* w = NULL;
-    if (widget->window && WX_PIZZA(widget)->m_is_scrollable)
-        w = gdk_window_get_parent(widget->window);
-    return w;
-}
+#ifdef __WXGTK3__
+enum {
+    PROP_0,
+    PROP_HADJUSTMENT,
+    PROP_VADJUSTMENT,
+    PROP_HSCROLL_POLICY,
+    PROP_VSCROLL_POLICY
+};
+#endif

 
 extern "C" {
 
 struct wxPizzaClass
 {
     GtkFixedClass parent;
 
 extern "C" {
 
 struct wxPizzaClass
 {
     GtkFixedClass parent;

+#ifndef __WXGTK3__

     void (*set_scroll_adjustments)(GtkWidget*, GtkAdjustment*, GtkAdjustment*);
     void (*set_scroll_adjustments)(GtkWidget*, GtkAdjustment*, GtkAdjustment*);

+#endif

 };
 
 };
 

-static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
+static void pizza_size_allocate(GtkWidget* widget, GtkAllocation* alloc)

 {
 {

-    const bool is_resize =
-        widget->allocation.width  != alloc->width ||
-        widget->allocation.height != alloc->height;
-    const bool is_move =
-        widget->allocation.x != alloc->x ||
-        widget->allocation.y != alloc->y;
-

     wxPizza* pizza = WX_PIZZA(widget);
     wxPizza* pizza = WX_PIZZA(widget);

-    int border_x, border_y;
-    pizza->get_border_widths(border_x, border_y);
-    int w = alloc->width - 2 * border_x;
+    GtkBorder border;
+    pizza->get_border(border);
+    int w = alloc->width - border.left - border.right;

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

-    if (GTK_WIDGET_REALIZED(widget) && (is_move || is_resize))
+    if (gtk_widget_get_realized(widget))

     {
     {

-        int h = alloc->height - 2 * border_y;
+        int h = alloc->height - border.top - border.bottom;

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

+        const int x = alloc->x + border.left;
+        const int y = alloc->y + border.top;

 
 

-        if (pizza->m_is_scrollable)
-        {
-            // two windows, both same size
-            GdkWindow* backing_window = gdk_window_get_parent(widget->window);
-            gdk_window_move_resize(backing_window,
-                alloc->x + border_x, alloc->y + border_y, w, h);
-            if (is_resize)
-                gdk_window_resize(widget->window, w, h);
-        }
-        else
+        GdkWindow* window = gtk_widget_get_window(widget);
+        int old_x, old_y;
+        gdk_window_get_position(window, &old_x, &old_y);
+
+        if (x != old_x || y != old_y ||
+            w != gdk_window_get_width(window) || h != gdk_window_get_height(window))

         {
         {

-            // one window
-            gdk_window_move_resize(widget->window,
-                alloc->x + border_x, alloc->y + border_y, w, h);
+            gdk_window_move_resize(window, x, y, w, h);

 
 

-            if (is_resize && (border_x || border_y))
+            if (border.left + border.right + border.top + border.bottom)

             {
                 // old and new border areas need to be invalidated,
                 // otherwise they will not be erased/redrawn properly
             {
                 // old and new border areas need to be invalidated,
                 // otherwise they will not be erased/redrawn properly

-                const GtkAllocation& a1 = widget->allocation;
-                const GtkAllocation& a2 = *alloc;
-                GdkRectangle r1 = { a1.x, a1.y, a1.width, a1.height };
-                GdkRectangle r2 = { a2.x, a2.y, a2.width, a2.height };
-                gdk_window_invalidate_rect(widget->parent->window, &r1, false);
-                gdk_window_invalidate_rect(widget->parent->window, &r2, false);
+                GtkAllocation old_alloc;
+                gtk_widget_get_allocation(widget, &old_alloc);
+                GdkWindow* parent = gtk_widget_get_parent_window(widget);
+                gdk_window_invalidate_rect(parent, &old_alloc, false);
+                gdk_window_invalidate_rect(parent, alloc, false);

             }
         }
     }
 
             }
         }
     }
 

-    widget->allocation = *alloc;
+    gtk_widget_set_allocation(widget, alloc);

 
     // adjust child positions
 
     // adjust child positions

-    for (const GList* list = pizza->m_fixed.children; list; list = list->next)
+    for (const GList* p = pizza->m_children; p; p = p->next)

     {
     {

-        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
-        if (GTK_WIDGET_VISIBLE(child->widget))
+        const wxPizzaChild* child = static_cast<wxPizzaChild*>(p->data);
+        if (gtk_widget_get_visible(child->widget))

         {
             GtkAllocation child_alloc;
             // note that child positions do not take border into
         {
             GtkAllocation child_alloc;
             // note that child positions do not take border into


@@ -109,10 +111,8 @@ static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
             // which has already been adjusted
             child_alloc.x = child->x - pizza->m_scroll_x;
             child_alloc.y = child->y - pizza->m_scroll_y;
             // which has already been adjusted
             child_alloc.x = child->x - pizza->m_scroll_x;
             child_alloc.y = child->y - pizza->m_scroll_y;

-            GtkRequisition req;
-            gtk_widget_get_child_requisition(child->widget, &req);
-            child_alloc.width  = req.width;
-            child_alloc.height = req.height;
+            child_alloc.width  = child->width;
+            child_alloc.height = child->height;

             if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
                 child_alloc.x = w - child_alloc.x - child_alloc.width;
             gtk_widget_size_allocate(child->widget, &child_alloc);
             if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
                 child_alloc.x = w - child_alloc.x - child_alloc.width;
             gtk_widget_size_allocate(child->widget, &child_alloc);


@@ -120,88 +120,106 @@ static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
     }
 }
 
     }
 }
 

-static void realize(GtkWidget* widget)
+static void pizza_realize(GtkWidget* widget)

 {
     parent_class->realize(widget);
 
     wxPizza* pizza = WX_PIZZA(widget);
 {
     parent_class->realize(widget);
 
     wxPizza* pizza = WX_PIZZA(widget);

-    if (pizza->m_border_style || pizza->m_is_scrollable)
+    if (pizza->m_windowStyle & wxPizza::BORDER_STYLES)

     {
     {

-        int border_x, border_y;
-        pizza->get_border_widths(border_x, border_y);
-        int x = widget->allocation.x + border_x;
-        int y = widget->allocation.y + border_y;
-        int w = widget->allocation.width  - 2 * border_x;
-        int h = widget->allocation.height - 2 * border_y;
+        GtkBorder border;
+        pizza->get_border(border);
+        GtkAllocation a;
+        gtk_widget_get_allocation(widget, &a);
+        int x = a.x + border.left;
+        int y = a.y + border.top;
+        int w = a.width - border.left - border.right;
+        int h = a.height - border.top - border.bottom;

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

-        if (pizza->m_is_scrollable)
-        {
-            // second window is created if wxWindow is scrollable
-            GdkWindowAttr attr;
-            attr.event_mask = 0;
-            attr.x = x;
-            attr.y = y;
-            attr.width  = w;
-            attr.height = h;
-            attr.wclass = GDK_INPUT_OUTPUT;
-            attr.visual = gtk_widget_get_visual(widget);
-            attr.colormap = gtk_widget_get_colormap(widget);
-            attr.window_type = GDK_WINDOW_CHILD;
-
-            GdkWindow* backing_window = gdk_window_new(
-                gdk_window_get_parent(widget->window),
-                &attr,
-                GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP);
-
-            gdk_window_set_user_data(backing_window, widget);
-            gdk_window_reparent(widget->window, backing_window, 0, 0);
-            gdk_window_resize(widget->window, w, h);
-
-            // Parts of backing window may be exposed temporarily while
-            // resizing. Setting the backing pixmap to None prevents those
-            // areas from being briefly painted black.
-            gdk_window_set_back_pixmap(backing_window, NULL, false);
-        }
-        else
-            gdk_window_move_resize(widget->window, x, y, w, h);
+        gdk_window_move_resize(gtk_widget_get_window(widget), x, y, w, h);

     }
 }
 
     }
 }
 

-static void unrealize(GtkWidget* widget)
+static void pizza_show(GtkWidget* widget)

 {
 {

-    GdkWindow* backing_window = get_backing_window(widget);
+    GtkWidget* parent = gtk_widget_get_parent(widget);
+    if (parent && (WX_PIZZA(widget)->m_windowStyle & wxPizza::BORDER_STYLES))
+    {
+        // invalidate whole allocation so borders will be drawn properly
+        GtkAllocation a;
+        gtk_widget_get_allocation(widget, &a);
+        gtk_widget_queue_draw_area(parent, a.x, a.y, a.width, a.height);
+    }

 
 

-    parent_class->unrealize(widget);
+    parent_class->show(widget);
+}

 
 

-    if (backing_window)
+static void pizza_hide(GtkWidget* widget)
+{
+    GtkWidget* parent = gtk_widget_get_parent(widget);
+    if (parent && (WX_PIZZA(widget)->m_windowStyle & wxPizza::BORDER_STYLES))

     {
     {

-        gdk_window_set_user_data(backing_window, NULL);
-        gdk_window_destroy(backing_window);
+        // invalidate whole allocation so borders will be erased properly
+        GtkAllocation a;
+        gtk_widget_get_allocation(widget, &a);
+        gtk_widget_queue_draw_area(parent, a.x, a.y, a.width, a.height);

     }
     }

+
+    parent_class->hide(widget);

 }
 
 }
 

-static void map(GtkWidget* widget)
+static void pizza_add(GtkContainer* container, GtkWidget* widget)

 {
 {

-    GdkWindow* backing_window = get_backing_window(widget);
-    if (backing_window)
-        gdk_window_show(backing_window);
+    WX_PIZZA(container)->put(widget, 0, 0, 1, 1);
+}

 
 

-    parent_class->map(widget);
+static void pizza_remove(GtkContainer* container, GtkWidget* widget)
+{
+    GTK_CONTAINER_CLASS(parent_class)->remove(container, widget);
+
+    wxPizza* pizza = WX_PIZZA(container);
+    for (GList* p = pizza->m_children; p; p = p->next)
+    {
+        wxPizzaChild* child = static_cast<wxPizzaChild*>(p->data);
+        if (child->widget == widget)
+        {
+            pizza->m_children = g_list_delete_link(pizza->m_children, p);
+            delete child;
+            break;
+        }
+    }

 }
 
 }
 

-static void unmap(GtkWidget* widget)
+#ifdef __WXGTK3__
+static void pizza_get_preferred_width(GtkWidget* widget, int* minimum, int* natural)

 {
 {

-    GdkWindow* backing_window = get_backing_window(widget);
+    *minimum = 0;
+    gtk_widget_get_size_request(widget, natural, NULL);
+    if (*natural < 0)
+        *natural = 0;
+}

 
 

-    parent_class->unmap(widget);
+static void pizza_get_preferred_height(GtkWidget* widget, int* minimum, int* natural)
+{
+    *minimum = 0;
+    gtk_widget_get_size_request(widget, NULL, natural);
+    if (*natural < 0)
+        *natural = 0;
+}

 
 

-    if (backing_window)
-        gdk_window_hide(backing_window);
+// Needed to implement GtkScrollable interface, but we don't care about the
+// properties. wxWindowGTK handles the adjustments and scroll policy.
+static void pizza_get_property(GObject*, guint, GValue*, GParamSpec*)
+{

 }
 
 }
 

+static void pizza_set_property(GObject*, guint, const GValue*, GParamSpec*)
+{
+}
+#else

 // not used, but needs to exist so gtk_widget_set_scroll_adjustments will work
 // not used, but needs to exist so gtk_widget_set_scroll_adjustments will work

-static void set_scroll_adjustments(GtkWidget*, GtkAdjustment*, GtkAdjustment*)
+static void pizza_set_scroll_adjustments(GtkWidget*, GtkAdjustment*, GtkAdjustment*)

 {
 }
 
 {
 }
 


@@ -243,19 +261,33 @@ g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure     *closure,
             g_marshal_value_peek_object (param_values + 2),
             data2);
 }
             g_marshal_value_peek_object (param_values + 2),
             data2);
 }

+#endif

 
 static void class_init(void* g_class, void*)
 {
     GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;
 
 static void class_init(void* g_class, void*)
 {
     GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;

-    widget_class->size_allocate = size_allocate;
-    widget_class->realize = realize;
-    widget_class->unrealize = unrealize;
-    widget_class->map = map;
-    widget_class->unmap = unmap;
-    wxPizzaClass* klass = (wxPizzaClass*)g_class;
-
+    widget_class->size_allocate = pizza_size_allocate;
+    widget_class->realize = pizza_realize;
+    widget_class->show = pizza_show;
+    widget_class->hide = pizza_hide;
+    GtkContainerClass* container_class = (GtkContainerClass*)g_class;
+    container_class->add = pizza_add;
+    container_class->remove = pizza_remove;
+
+#ifdef __WXGTK3__
+    widget_class->get_preferred_width = pizza_get_preferred_width;
+    widget_class->get_preferred_height = pizza_get_preferred_height;
+    GObjectClass *gobject_class = G_OBJECT_CLASS(g_class);
+    gobject_class->set_property = pizza_set_property;
+    gobject_class->get_property = pizza_get_property;
+    g_object_class_override_property(gobject_class, PROP_HADJUSTMENT, "hadjustment");
+    g_object_class_override_property(gobject_class, PROP_VADJUSTMENT, "vadjustment");
+    g_object_class_override_property(gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
+    g_object_class_override_property(gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
+#else
+    wxPizzaClass* klass = static_cast<wxPizzaClass*>(g_class);

     // needed to make widget appear scrollable to GTK+
     // needed to make widget appear scrollable to GTK+

-    klass->set_scroll_adjustments = set_scroll_adjustments;
+    klass->set_scroll_adjustments = pizza_set_scroll_adjustments;

     widget_class->set_scroll_adjustments_signal =
         g_signal_new(
             "set_scroll_adjustments",
     widget_class->set_scroll_adjustments_signal =
         g_signal_new(
             "set_scroll_adjustments",


@@ -265,7 +297,7 @@ static void class_init(void* g_class, void*)
             NULL, NULL,
             g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
             G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
             NULL, NULL,
             g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
             G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);

-
+#endif

     parent_class = GTK_WIDGET_CLASS(g_type_class_peek_parent(g_class));
 }
 
     parent_class = GTK_WIDGET_CLASS(g_type_class_peek_parent(g_class));
 }
 


@@ -273,7 +305,7 @@ static void class_init(void* g_class, void*)
 
 GType wxPizza::type()
 {
 
 GType wxPizza::type()
 {

-    static GtkType type;
+    static GType type;

     if (type == 0)
     {
         const GTypeInfo info = {
     if (type == 0)
     {
         const GTypeInfo info = {


@@ -286,6 +318,10 @@ GType wxPizza::type()
         };
         type = g_type_register_static(
             GTK_TYPE_FIXED, "wxPizza", &info, GTypeFlags(0));
         };
         type = g_type_register_static(
             GTK_TYPE_FIXED, "wxPizza", &info, GTypeFlags(0));

+#ifdef __WXGTK3__
+        const GInterfaceInfo interface_info = { NULL, NULL, NULL };
+        g_type_add_interface_static(type, GTK_TYPE_SCROLLABLE, &interface_info);
+#endif

     }
     return type;
 }
     }
     return type;
 }


@@ -294,12 +330,15 @@ GtkWidget* wxPizza::New(long windowStyle)
 {
     GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
     wxPizza* pizza = WX_PIZZA(widget);
 {
     GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
     wxPizza* pizza = WX_PIZZA(widget);

+    pizza->m_children = NULL;

     pizza->m_scroll_x = 0;
     pizza->m_scroll_y = 0;
     pizza->m_scroll_x = 0;
     pizza->m_scroll_y = 0;

-    pizza->m_is_scrollable = (windowStyle & (wxHSCROLL | wxVSCROLL)) != 0;
-    // mask off border styles not useable with wxPizza
-    pizza->m_border_style = int(windowStyle & BORDER_STYLES);
+    pizza->m_windowStyle = windowStyle;
+#ifdef __WXGTK3__
+    gtk_widget_set_has_window(widget, true);
+#else

     gtk_fixed_set_has_window(GTK_FIXED(widget), true);
     gtk_fixed_set_has_window(GTK_FIXED(widget), true);

+#endif

     gtk_widget_add_events(widget,
         GDK_EXPOSURE_MASK |
         GDK_SCROLL_MASK |
     gtk_widget_add_events(widget,
         GDK_EXPOSURE_MASK |
         GDK_SCROLL_MASK |


@@ -319,23 +358,44 @@ GtkWidget* wxPizza::New(long windowStyle)
     return widget;
 }
 
     return widget;
 }
 

-// gtk_fixed_move does not check for a change before issuing a queue_resize,
-// we need to avoid that to prevent endless sizing loops, so check first
-void wxPizza::move(GtkWidget* widget, int x, int y)
+void wxPizza::move(GtkWidget* widget, int x, int y, int width, int height)

 {
 {

-    GtkFixed* fixed = &m_fixed;
-    for (const GList* list = fixed->children; list; list = list->next)
+    for (const GList* p = m_children; p; p = p->next)

     {
     {

-        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
+        wxPizzaChild* child = static_cast<wxPizzaChild*>(p->data);

         if (child->widget == widget)
         {
         if (child->widget == widget)
         {

-            if (child->x != x || child->y != y)
-                gtk_fixed_move(fixed, widget, x, y);
+            child->x = x;
+            child->y = y;
+            child->width = width;
+            child->height = height;
+            // normally a queue-resize would be needed here, but we know
+            // wxWindowGTK::DoMoveWindow() will take care of it

             break;
         }
     }
 }
 
             break;
         }
     }
 }
 

+void wxPizza::put(GtkWidget* widget, int x, int y, int width, int height)
+{
+    // Re-parenting a TLW under a child window is possible at wx level but
+    // using a TLW as child at GTK+ level results in problems, so don't do it.
+#if GTK_CHECK_VERSION(2,19,3)
+    if (!gtk_widget_is_toplevel(GTK_WIDGET(widget)))
+#else
+    if (!GTK_WIDGET_TOPLEVEL(GTK_WIDGET(widget)))
+#endif
+        gtk_fixed_put(GTK_FIXED(this), widget, 0, 0);
+
+    wxPizzaChild* child = new wxPizzaChild;
+    child->widget = widget;
+    child->x = x;
+    child->y = y;
+    child->width = width;
+    child->height = height;
+    m_children = g_list_append(m_children, child);
+}
+

 struct AdjustData {
     GdkWindow* window;
     int dx, dy;
 struct AdjustData {
     GdkWindow* window;
     int dx, dy;


@@ -346,10 +406,13 @@ extern "C" {
 static void scroll_adjust(GtkWidget* widget, void* data)
 {
     const AdjustData* p = static_cast<AdjustData*>(data);
 static void scroll_adjust(GtkWidget* widget, void* data)
 {
     const AdjustData* p = static_cast<AdjustData*>(data);

-    widget->allocation.x += p->dx;
-    widget->allocation.y += p->dy;
+    GtkAllocation a;
+    gtk_widget_get_allocation(widget, &a);
+    a.x += p->dx;
+    a.y += p->dy;
+    gtk_widget_set_allocation(widget, &a);

 
 

-    if (widget->window == p->window)
+    if (gtk_widget_get_window(widget) == p->window)

     {
         // GtkFrame requires a queue_resize, otherwise parts of
         // the frame newly exposed by the scroll are not drawn.
     {
         // GtkFrame requires a queue_resize, otherwise parts of
         // the frame newly exposed by the scroll are not drawn.


@@ -368,44 +431,46 @@ void wxPizza::scroll(int dx, int dy)
         dx = -dx;
     m_scroll_x -= dx;
     m_scroll_y -= dy;
         dx = -dx;
     m_scroll_x -= dx;
     m_scroll_y -= dy;

-    if (widget->window)
+    GdkWindow* window = gtk_widget_get_window(widget);
+    if (window)

     {
     {

-        gdk_window_scroll(widget->window, dx, dy);
+        gdk_window_scroll(window, dx, dy);

         // Adjust child allocations. Doing a queue_resize on the children is not
         // enough, sometimes they redraw in the wrong place during fast scrolling.
         // Adjust child allocations. Doing a queue_resize on the children is not
         // enough, sometimes they redraw in the wrong place during fast scrolling.

-        AdjustData data = { widget->window, dx, dy };
+        AdjustData data = { window, dx, dy };

         gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, &data);
     }
 }
 
         gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, &data);
     }
 }
 

-void wxPizza::get_border_widths(int& x, int& y)
+void wxPizza::get_border(GtkBorder& border)

 {
 {

-    x = y = 0;
-    if (m_border_style == 0)
-        return;
-

 #ifndef __WXUNIVERSAL__
 #ifndef __WXUNIVERSAL__

-    if (m_border_style & wxBORDER_SIMPLE)
-        x = y = 1;
-    else if (m_is_scrollable /* || (m_border_style & wxBORDER_THEME) */)
+    if (m_windowStyle & wxBORDER_SIMPLE)
+        border.left = border.right = border.top = border.bottom = 1;
+    else if (m_windowStyle & (wxBORDER_RAISED | wxBORDER_SUNKEN | wxBORDER_THEME))

     {
     {

-        GtkWidget *style_widget = wxGTKPrivate::GetTreeWidget();
+#ifdef __WXGTK3__
+        GtkStyleContext* sc;
+        if (m_windowStyle & (wxHSCROLL | wxVSCROLL))
+            sc = gtk_widget_get_style_context(wxGTKPrivate::GetTreeWidget());
+        else
+            sc = gtk_widget_get_style_context(wxGTKPrivate::GetEntryWidget());

 
 

-        if (style_widget->style)
-        {
-            x = style_widget->style->xthickness;
-            y = style_widget->style->ythickness;
-        }
+        gtk_style_context_get_border(sc, GTK_STATE_FLAG_NORMAL, &border);
+#else // !__WXGTK3__
+        GtkStyle* style;
+        if (m_windowStyle & (wxHSCROLL | wxVSCROLL))
+            style = gtk_widget_get_style(wxGTKPrivate::GetTreeWidget());
+        else
+            style = gtk_widget_get_style(wxGTKPrivate::GetEntryWidget());
+
+        border.left = border.right = style->xthickness;
+        border.top = border.bottom = style->ythickness;
+#endif // !__WXGTK3__

     }
     else
     }
     else

+#endif // !__WXUNIVERSAL__

     {
     {

-        GtkWidget *style_widget = wxGTKPrivate::GetEntryWidget();
-
-        if (style_widget->style)
-        {
-            x = style_widget->style->xthickness;
-            y = style_widget->style->ythickness;
-        }
+        border.left = border.right = border.top = border.bottom = 0;

     }
     }

-#endif

 }
 }