X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/034be8882cc091cf8ca1ccdf307190ac73adfe54..a9249b2eb2a40d8c71f828669045c4ddaa8dc5ff:/src/gtk/win_gtk.c diff --git a/src/gtk/win_gtk.c b/src/gtk/win_gtk.c index 31b638fb6f..2f41b1064c 100644 --- a/src/gtk/win_gtk.c +++ b/src/gtk/win_gtk.c @@ -1,604 +1,1267 @@ /* /////////////////////////////////////////////////////////////////////////// // Name: win_gtk.c -// Purpose: native GTK+ widget for wxWindows +// Purpose: Native GTK+ widget for wxWindows, 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 -// Licence: wxWindows licence +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////// */ +#ifdef VMS +#define XCheckIfEvent XCHECKIFEVENT +#endif + +#include "wx/setup.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 */ -static void gtk_myfixed_class_init (GtkMyFixedClass *klass); -static void gtk_myfixed_init (GtkMyFixed *myfixed); -static void gtk_myfixed_map (GtkWidget *widget); -#if (GTK_MINOR_VERSION == 0) -static void gtk_myfixed_unmap (GtkWidget *widget); -#endif -static void gtk_myfixed_realize (GtkWidget *widget); -static void gtk_myfixed_size_request (GtkWidget *widget, - GtkRequisition *requisition); -static void gtk_myfixed_size_allocate (GtkWidget *widget, - GtkAllocation *allocation); -static void gtk_myfixed_paint (GtkWidget *widget, - GdkRectangle *area); -static void gtk_myfixed_draw (GtkWidget *widget, - GdkRectangle *area); -static gint gtk_myfixed_expose (GtkWidget *widget, - GdkEventExpose *event); -static void gtk_myfixed_add (GtkContainer *container, - GtkWidget *widget); -static void gtk_myfixed_remove (GtkContainer *container, - GtkWidget *widget); -static void gtk_myfixed_foreach (GtkContainer *container, -#if (GTK_MINOR_VERSION > 0) - gboolean include_internals, -#endif - GtkCallback callback, - gpointer callback_data); -#if (GTK_MINOR_VERSION > 0) -static GtkType gtk_myfixed_child_type (GtkContainer *container); -#endif +#include +#include +#include -#if (GTK_MINOR_VERSION > 0) -static void gtk_myfixed_scroll_set_adjustments (GtkMyFixed *myfixed, - GtkAdjustment *hadj, - GtkAdjustment *vadj); +#define IS_ONSCREEN(x,y) ((x >= G_MINSHORT) && (x <= G_MAXSHORT) && \ + (y >= G_MINSHORT) && (y <= G_MAXSHORT)) + +typedef struct _GtkPizzaAdjData GtkPizzaAdjData; + +struct _GtkPizzaAdjData +{ + gint dx; + gint dy; +}; + +static void gtk_pizza_class_init (GtkPizzaClass *klass); +static void gtk_pizza_init (GtkPizza *pizza); + +static void gtk_pizza_realize (GtkWidget *widget); +static void gtk_pizza_unrealize (GtkWidget *widget); + +static void gtk_pizza_map (GtkWidget *widget); + +static void gtk_pizza_size_request (GtkWidget *widget, + GtkRequisition *requisition); +static void gtk_pizza_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static void gtk_pizza_draw (GtkWidget *widget, + GdkRectangle *area); +static gint gtk_pizza_expose (GtkWidget *widget, + GdkEventExpose *event); +static void gtk_pizza_add (GtkContainer *container, + GtkWidget *widget); +static void gtk_pizza_remove (GtkContainer *container, + GtkWidget *widget); +static void gtk_pizza_forall (GtkContainer *container, + gboolean include_internals, + GtkCallback callback, + gpointer callback_data); + +static void gtk_pizza_position_child (GtkPizza *pizza, + GtkPizzaChild *child); +static void gtk_pizza_allocate_child (GtkPizza *pizza, + GtkPizzaChild *child); +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); + + +/* unused */ +#if 0 +static void gtk_pizza_expose_area (GtkPizza *pizza, + gint x, + gint y, + gint width, + gint height); +static void gtk_pizza_adjustment_changed (GtkAdjustment *adjustment, + GtkPizza *pizza); #endif +static GdkFilterReturn gtk_pizza_filter (GdkXEvent *gdk_xevent, + GdkEvent *event, + gpointer data); +static GdkFilterReturn gtk_pizza_main_filter (GdkXEvent *gdk_xevent, + GdkEvent *event, + gpointer data); + + +static GtkType gtk_pizza_child_type (GtkContainer *container); + +static void gtk_pizza_scroll_set_adjustments (GtkPizza *pizza, + GtkAdjustment *hadj, + GtkAdjustment *vadj); static GtkContainerClass *parent_class = NULL; +static gboolean gravity_works; guint -gtk_myfixed_get_type () -{ - static guint myfixed_type = 0; - - if (!myfixed_type) - { - GtkTypeInfo myfixed_info = - { - "GtkMyFixed", - sizeof (GtkMyFixed), - sizeof (GtkMyFixedClass), - (GtkClassInitFunc) gtk_myfixed_class_init, - (GtkObjectInitFunc) gtk_myfixed_init, -#if (GTK_MINOR_VERSION > 0) - /* reserved_1 */ NULL, - /* reserved_2 */ NULL, - (GtkClassInitFunc) NULL, -#else - (GtkArgSetFunc) NULL, - (GtkArgGetFunc) NULL, -#endif - }; +gtk_pizza_get_type () +{ + static guint pizza_type = 0; - myfixed_type = gtk_type_unique (gtk_container_get_type (), &myfixed_info); + if (!pizza_type) + { + GtkTypeInfo pizza_info = + { + "GtkPizza", + sizeof (GtkPizza), + sizeof (GtkPizzaClass), + (GtkClassInitFunc) gtk_pizza_class_init, + (GtkObjectInitFunc) gtk_pizza_init, + /* reserved_1 */ NULL, + /* reserved_2 */ NULL, + (GtkClassInitFunc) NULL, + }; + pizza_type = gtk_type_unique (gtk_container_get_type (), &pizza_info); } - return myfixed_type; + return pizza_type; } static void -gtk_myfixed_class_init (GtkMyFixedClass *klass) -{ - GtkObjectClass *object_class; - GtkWidgetClass *widget_class; - GtkContainerClass *container_class; - - object_class = (GtkObjectClass*) klass; - widget_class = (GtkWidgetClass*) klass; - container_class = (GtkContainerClass*) klass; - -#if (GTK_MINOR_VERSION > 0) - parent_class = gtk_type_class (GTK_TYPE_CONTAINER); -#else - parent_class = gtk_type_class (gtk_container_get_type ()); -#endif +gtk_pizza_class_init (GtkPizzaClass *klass) +{ + GtkObjectClass *object_class; + GtkWidgetClass *widget_class; + GtkContainerClass *container_class; - widget_class->map = gtk_myfixed_map; -#if (GTK_MINOR_VERSION == 0) - widget_class->unmap = gtk_myfixed_unmap; -#endif - widget_class->realize = gtk_myfixed_realize; - widget_class->size_request = gtk_myfixed_size_request; - widget_class->size_allocate = gtk_myfixed_size_allocate; - widget_class->draw = gtk_myfixed_draw; - widget_class->expose_event = gtk_myfixed_expose; - - container_class->add = gtk_myfixed_add; - container_class->remove = gtk_myfixed_remove; -#if (GTK_MINOR_VERSION > 0) - container_class->forall = gtk_myfixed_foreach; -#else - container_class->foreach = gtk_myfixed_foreach; -#endif + object_class = (GtkObjectClass*) klass; + widget_class = (GtkWidgetClass*) klass; + container_class = (GtkContainerClass*) klass; + parent_class = gtk_type_class (GTK_TYPE_CONTAINER); -#if (GTK_MINOR_VERSION > 0) - container_class->child_type = gtk_myfixed_child_type; -#endif + widget_class->map = gtk_pizza_map; + widget_class->realize = gtk_pizza_realize; + widget_class->unrealize = gtk_pizza_unrealize; + widget_class->size_request = gtk_pizza_size_request; + widget_class->size_allocate = gtk_pizza_size_allocate; + widget_class->draw = gtk_pizza_draw; + widget_class->expose_event = gtk_pizza_expose; -#if (GTK_MINOR_VERSION > 0) - klass->set_scroll_adjustments = gtk_myfixed_scroll_set_adjustments; + container_class->add = gtk_pizza_add; + container_class->remove = gtk_pizza_remove; + container_class->forall = gtk_pizza_forall; - widget_class->set_scroll_adjustments_signal = + container_class->child_type = gtk_pizza_child_type; + + klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments; + + widget_class->set_scroll_adjustments_signal = gtk_signal_new ("set_scroll_adjustments", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (GtkMyFixedClass, set_scroll_adjustments), - gtk_marshal_NONE__POINTER_POINTER, - GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); + GTK_RUN_LAST, + +#ifdef __WXGTK20__ + GTK_CLASS_TYPE(object_class), +#else + 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); } -#if (GTK_MINOR_VERSION > 0) static GtkType -gtk_myfixed_child_type (GtkContainer *container) +gtk_pizza_child_type (GtkContainer *container) { - return GTK_TYPE_WIDGET; + return GTK_TYPE_WIDGET; } -#endif static void -gtk_myfixed_init (GtkMyFixed *myfixed) +gtk_pizza_init (GtkPizza *pizza) { - GTK_WIDGET_UNSET_FLAGS (myfixed, GTK_NO_WINDOW); - -#if (GTK_MINOR_VERSION == 0) - GTK_WIDGET_SET_FLAGS (myfixed, GTK_BASIC); -#endif + GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW); -#if (GTK_MINOR_VERSION > 0) - myfixed->shadow_type = GTK_SHADOW_NONE; -#endif + pizza->shadow_type = GTK_MYSHADOW_NONE; + + pizza->children = NULL; + + pizza->width = 20; + pizza->height = 20; - myfixed->children = 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; } GtkWidget* -gtk_myfixed_new () +gtk_pizza_new () { - GtkMyFixed *myfixed; + GtkPizza *pizza; + + pizza = gtk_type_new (gtk_pizza_get_type ()); - myfixed = gtk_type_new (gtk_myfixed_get_type ()); - - return GTK_WIDGET (myfixed); + return GTK_WIDGET (pizza); } -#if (GTK_MINOR_VERSION > 0) -void gtk_myfixed_scroll_set_adjustments (GtkMyFixed *myfixed, - GtkAdjustment *hadj, - GtkAdjustment *vadj) +static void +gtk_pizza_scroll_set_adjustments (GtkPizza *pizza, + GtkAdjustment *hadj, + GtkAdjustment *vadj) { - /* OK, this is embarassing, but this function has to be here */ + /* We handle scrolling in the wxScrolledWindow, not here. */ } -void -gtk_myfixed_set_shadow_type (GtkMyFixed *myfixed, - GtkShadowType type) +void +gtk_pizza_set_shadow_type (GtkPizza *pizza, + GtkMyShadowType type) { - g_return_if_fail (myfixed != NULL); - g_return_if_fail (GTK_IS_MYFIXED (myfixed)); + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); - if ((GtkShadowType) myfixed->shadow_type != type) + if ((GtkMyShadowType) pizza->shadow_type != type) { - myfixed->shadow_type = type; + pizza->shadow_type = type; - if (GTK_WIDGET_VISIBLE (myfixed)) - { - gtk_widget_size_allocate (GTK_WIDGET (myfixed), &(GTK_WIDGET (myfixed)->allocation)); - gtk_widget_queue_draw (GTK_WIDGET (myfixed)); - } + if (GTK_WIDGET_VISIBLE (pizza)) + { + gtk_widget_size_allocate (GTK_WIDGET (pizza), &(GTK_WIDGET (pizza)->allocation)); + gtk_widget_queue_draw (GTK_WIDGET (pizza)); + } } } -#endif void -gtk_myfixed_put (GtkMyFixed *myfixed, - GtkWidget *widget, - gint16 x, - gint16 y) +gtk_pizza_set_clear (GtkPizza *pizza, + gboolean clear) +{ + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); + + pizza->clear_on_draw = clear; +} + +void +gtk_pizza_set_filter (GtkPizza *pizza, + gboolean use) +{ + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); + + pizza->use_filter = use; +} + +void +gtk_pizza_set_external (GtkPizza *pizza, + gboolean expose) +{ + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); + + pizza->external_expose = expose; +} + +void +gtk_pizza_put (GtkPizza *pizza, + GtkWidget *widget, + gint x, + gint y, + gint width, + gint height) { - GtkMyFixedChild *child_info; + GtkPizzaChild *child_info; + + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); + g_return_if_fail (widget != NULL); - g_return_if_fail (myfixed != NULL); - g_return_if_fail (GTK_IS_MYFIXED (myfixed)); - g_return_if_fail (widget != NULL); + child_info = g_new (GtkPizzaChild, 1); - child_info = g_new (GtkMyFixedChild, 1); - child_info->widget = widget; - child_info->x = x; - child_info->y = y; - - gtk_widget_set_parent (widget, GTK_WIDGET (myfixed)); + child_info->widget = widget; + child_info->x = x; + child_info->y = y; + child_info->width = width; + child_info->height = height; - myfixed->children = g_list_append (myfixed->children, child_info); + pizza->children = g_list_append (pizza->children, child_info); - if (GTK_WIDGET_REALIZED (myfixed) && !GTK_WIDGET_REALIZED (widget)) - gtk_widget_realize (widget); + gtk_widget_set_parent (widget, GTK_WIDGET (pizza)); - if (GTK_WIDGET_MAPPED (myfixed) && !GTK_WIDGET_MAPPED (widget)) - gtk_widget_map (widget); + if (GTK_WIDGET_REALIZED (pizza)) + gtk_widget_set_parent_window (widget, pizza->bin_window); + +#ifndef __WXGTK20__ /* FIXME? */ + if (!IS_ONSCREEN (x, y)) + GTK_PRIVATE_SET_FLAG (widget, GTK_IS_OFFSCREEN); +#endif + +/* + if (GTK_WIDGET_REALIZED (pizza)) + gtk_widget_realize (widget); +*/ + + gtk_widget_set_usize (widget, width, height); + +/* + if (GTK_WIDGET_VISIBLE (pizza) && GTK_WIDGET_VISIBLE (widget)) + { + if (GTK_WIDGET_MAPPED (pizza)) + gtk_widget_map (widget); - if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (myfixed)) - gtk_widget_queue_resize (GTK_WIDGET (myfixed)); + gtk_widget_queue_resize (widget); + } +*/ } void -gtk_myfixed_move (GtkMyFixed *myfixed, - GtkWidget *widget, - gint16 x, - gint16 y) +gtk_pizza_move (GtkPizza *pizza, + GtkWidget *widget, + gint x, + gint y) { - GtkMyFixedChild *child; - GList *children; + GtkPizzaChild *child; + GList *children; - g_return_if_fail (myfixed != NULL); - g_return_if_fail (GTK_IS_MYFIXED (myfixed)); - g_return_if_fail (widget != NULL); + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); + g_return_if_fail (widget != NULL); - children = myfixed->children; - while (children) + children = pizza->children; + while (children) { - child = children->data; - children = children->next; + child = children->data; + children = children->next; - if (child->widget == widget) + if (child->widget == widget) { - if ((child->x == x) && (child->y == y)) return; - - child->x = x; - child->y = y; + if ((child->x == x) && (child->y == y)) + break; - if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (myfixed)) - gtk_widget_queue_resize (GTK_WIDGET (myfixed)); + child->x = x; + child->y = y; - break; + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza)) + gtk_widget_queue_resize (widget); + break; } } } -static void -gtk_myfixed_map (GtkWidget *widget) +void +gtk_pizza_resize (GtkPizza *pizza, + GtkWidget *widget, + gint width, + gint height) { - GtkMyFixed *myfixed; - GtkMyFixedChild *child; - GList *children; + GtkPizzaChild *child; + GList *children; - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED (widget)); + g_return_if_fail (pizza != NULL); + g_return_if_fail (GTK_IS_PIZZA (pizza)); + g_return_if_fail (widget != NULL); - GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED); - myfixed = GTK_MYFIXED (widget); + children = pizza->children; + while (children) + { + child = children->data; + children = children->next; - gdk_window_show (widget->window); + if (child->widget == widget) + { + if ((child->width == width) && (child->height == height)) + break; - children = myfixed->children; - while (children) + 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; + } + } +} + +void +gtk_pizza_set_size (GtkPizza *pizza, + GtkWidget *widget, + gint x, + gint y, + 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; + child = children->data; + children = children->next; + + 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->width = width; + child->height = height; - if (GTK_WIDGET_VISIBLE (child->widget) && - !GTK_WIDGET_MAPPED (child->widget)) - gtk_widget_map (child->widget); + gtk_widget_set_usize (widget, width, height); + + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza)) + gtk_widget_queue_resize (widget); + + return; + } } } -#if (GTK_MINOR_VERSION == 0) -static void -gtk_myfixed_unmap (GtkWidget *widget) +gint +gtk_pizza_child_resized (GtkPizza *pizza, + GtkWidget *widget) { - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED (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)); + } + } - GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED); + return FALSE; } + +static void +gtk_pizza_map (GtkWidget *widget) +{ + GtkPizza *pizza; + GtkPizzaChild *child; + GList *children; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PIZZA (widget)); + + GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED); + pizza = GTK_PIZZA (widget); + + children = pizza->children; + while (children) + { + child = children->data; + children = children->next; + + if ( GTK_WIDGET_VISIBLE (child->widget) && + !GTK_WIDGET_MAPPED (child->widget) && +#ifdef __WXGTK20__ + TRUE) +#else + !GTK_WIDGET_IS_OFFSCREEN (child->widget)) #endif + { + gtk_widget_map (child->widget); + } + } + + gdk_window_show (widget->window); + gdk_window_show (pizza->bin_window); +} static void -gtk_myfixed_realize (GtkWidget *widget) +gtk_pizza_realize (GtkWidget *widget) { - GtkMyFixed *myfixed; - GdkWindowAttr attributes; - gint attributes_mask; + GtkPizza *pizza; + GdkWindowAttr attributes; + gint attributes_mask; + GtkPizzaChild *child; + GList *children; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PIZZA (widget)); + + pizza = GTK_PIZZA (widget); - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED (widget)); + GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); - myfixed = GTK_MYFIXED (widget); - - GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); + attributes.window_type = GDK_WINDOW_CHILD; - attributes.window_type = GDK_WINDOW_CHILD; - -#if (GTK_MINOR_VERSION > 0) - if (myfixed->shadow_type != GTK_SHADOW_NONE) + attributes.x = widget->allocation.x; + attributes.y = widget->allocation.y; + attributes.width = widget->allocation.width; + attributes.height = widget->allocation.height; + +#ifndef __WXUNIVERSAL__ + if (pizza->shadow_type == GTK_MYSHADOW_NONE) { - attributes.x = 2; - attributes.y = 2; + /* no border, no changes to sizes */ } - else + else if (pizza->shadow_type == GTK_MYSHADOW_THIN) { - attributes.x = 0; - attributes.y = 0; + /* GTK_MYSHADOW_THIN == wxSIMPLE_BORDER */ + attributes.x += 1; + attributes.y += 1; + attributes.width -= 2; + attributes.height -= 2; } - attributes.width = MAX (1, (gint)widget->allocation.width - attributes.x * 2 ); - attributes.height = MAX (1, (gint)widget->allocation.height - attributes.y * 2 ); -#else - attributes.x = widget->allocation.x; - attributes.y = widget->allocation.y; - attributes.width = 32000; - attributes.height = 32000; -#endif - attributes.wclass = GDK_INPUT_OUTPUT; - attributes.visual = gtk_widget_get_visual (widget); - attributes.colormap = gtk_widget_get_colormap (widget); - attributes.event_mask = gtk_widget_get_events (widget); - attributes.event_mask |= - GDK_EXPOSURE_MASK | - GDK_POINTER_MOTION_MASK | - GDK_POINTER_MOTION_HINT_MASK | - GDK_BUTTON_MOTION_MASK | - GDK_BUTTON1_MOTION_MASK | - GDK_BUTTON2_MOTION_MASK | - GDK_BUTTON3_MOTION_MASK | - GDK_BUTTON_PRESS_MASK | - GDK_BUTTON_RELEASE_MASK | - GDK_KEY_PRESS_MASK | - GDK_KEY_RELEASE_MASK | - GDK_ENTER_NOTIFY_MASK | - GDK_LEAVE_NOTIFY_MASK | - GDK_FOCUS_CHANGE_MASK; - - attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; - - widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, - attributes_mask); - gdk_window_set_user_data (widget->window, widget); + 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__ */ + + /* minimal size */ + if (attributes.width < 2) attributes.width = 2; + if (attributes.height < 2) attributes.height = 2; + + attributes.wclass = GDK_INPUT_OUTPUT; + attributes.visual = gtk_widget_get_visual (widget); + attributes.colormap = gtk_widget_get_colormap (widget); + attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK; + attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; + + widget->window = gdk_window_new(gtk_widget_get_parent_window (widget), + &attributes, attributes_mask); + gdk_window_set_user_data (widget->window, widget); + + attributes.x = 0; + attributes.y = 0; + + attributes.event_mask = gtk_widget_get_events (widget); + attributes.event_mask |= GDK_EXPOSURE_MASK | + GDK_POINTER_MOTION_MASK | + GDK_POINTER_MOTION_HINT_MASK | + GDK_BUTTON_MOTION_MASK | + GDK_BUTTON1_MOTION_MASK | + GDK_BUTTON2_MOTION_MASK | + GDK_BUTTON3_MOTION_MASK | + GDK_BUTTON_PRESS_MASK | + GDK_BUTTON_RELEASE_MASK | + GDK_KEY_PRESS_MASK | + GDK_KEY_RELEASE_MASK | + GDK_ENTER_NOTIFY_MASK | + GDK_LEAVE_NOTIFY_MASK | + GDK_FOCUS_CHANGE_MASK; + + pizza->bin_window = gdk_window_new(widget->window, + &attributes, attributes_mask); + gdk_window_set_user_data (pizza->bin_window, 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); +/* + gdk_window_set_back_pixmap( widget->window, NULL, FALSE ); + gdk_window_set_back_pixmap( pizza->bin_window, NULL, FALSE ); +*/ + + /* add filters for intercepting visibility and expose events */ + gdk_window_add_filter (widget->window, gtk_pizza_main_filter, pizza); + gdk_window_add_filter (pizza->bin_window, gtk_pizza_filter, pizza); + + /* we NEED gravity or we'll give up */ + gravity_works = gdk_window_set_static_gravities (pizza->bin_window, TRUE); + + /* cannot be done before realisation */ + children = pizza->children; + while (children) + { + child = children->data; + children = children->next; + + gtk_widget_set_parent_window (child->widget, pizza->bin_window); + } } static void -gtk_myfixed_size_request (GtkWidget *widget, - GtkRequisition *requisition) +gtk_pizza_unrealize (GtkWidget *widget) { - GtkMyFixed *myfixed; - GtkMyFixedChild *child; - GList *children; - - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED (widget)); - g_return_if_fail (requisition != NULL); + GtkPizza *pizza; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PIZZA (widget)); + + pizza = GTK_PIZZA (widget); + + gdk_window_set_user_data (pizza->bin_window, NULL); + gdk_window_destroy (pizza->bin_window); + pizza->bin_window = NULL; - myfixed = GTK_MYFIXED (widget); - - requisition->width = 0; - requisition->height = 0; + if (GTK_WIDGET_CLASS (parent_class)->unrealize) + (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); +} + +static void +gtk_pizza_size_request (GtkWidget *widget, + GtkRequisition *requisition) +{ + GtkPizza *pizza; + GtkPizzaChild *child; + GList *children; + GtkRequisition child_requisition; - children = myfixed->children; - while (children) + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PIZZA (widget)); + g_return_if_fail (requisition != NULL); + + pizza = GTK_PIZZA (widget); + + children = pizza->children; + while (children) { - child = children->data; - children = children->next; + child = children->data; + children = children->next; - if (GTK_WIDGET_VISIBLE (child->widget)) - { - gtk_widget_size_request (child->widget, &child->widget->requisition); - } + if (GTK_WIDGET_VISIBLE (child->widget)) + { + gtk_widget_size_request (child->widget, &child_requisition); + } } + + /* request very little, I'm not sure if requesting nothing + will always have positive effects on stability... */ + requisition->width = 2; + requisition->height = 2; } static void -gtk_myfixed_size_allocate (GtkWidget *widget, - GtkAllocation *allocation) -{ - GtkMyFixed *myfixed; - gint border; - GtkMyFixedChild *child; - GtkAllocation child_allocation; - GList *children; - - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED(widget)); - g_return_if_fail (allocation != NULL); - - myfixed = GTK_MYFIXED (widget); - - if (myfixed->shadow_type == GTK_SHADOW_NONE) - border = 0; - else - border = 2; - - widget->allocation = *allocation; - if (GTK_WIDGET_REALIZED (widget)) - { - gdk_window_move_resize( widget->window, - allocation->x+border, allocation->y+border, -#if (GTK_MINOR_VERSION > 0) - allocation->width-border*2, allocation->height-border*2 ); -#else - 32000, 32000 ); -#endif - } +gtk_pizza_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + GtkPizza *pizza; + gint border; + gint x,y,w,h; + GtkPizzaChild *child; + GList *children; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PIZZA(widget)); + g_return_if_fail (allocation != NULL); + + pizza = GTK_PIZZA (widget); + + 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; + + x = allocation->x + border; + y = allocation->y + border; + w = allocation->width - border*2; + h = allocation->height - border*2; + + 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 ); + } + + children = pizza->children; + while (children) + { + child = children->data; + children = children->next; + + gtk_pizza_position_child (pizza, child); + gtk_pizza_allocate_child (pizza, child); + } +} + +static void +gtk_pizza_draw (GtkWidget *widget, + GdkRectangle *area) +{ + GtkPizza *pizza; + GtkPizzaChild *child; + GdkRectangle child_area; + GList *children; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PIZZA (widget)); + + pizza = GTK_PIZZA (widget); + + /* Sometimes, We handle all expose events in window.cpp now. */ + if (pizza->external_expose) + return; + + children = pizza->children; + if ( !(GTK_WIDGET_APP_PAINTABLE (widget)) && + (pizza->clear_on_draw)) + { + gdk_window_clear_area( pizza->bin_window, + area->x, area->y, area->width, area->height); + } + + while (children) + { + child = children->data; + children = children->next; + + if (gtk_widget_intersect (child->widget, area, &child_area)) + gtk_widget_draw (child->widget, &child_area); + } +} + +static gint +gtk_pizza_expose (GtkWidget *widget, + GdkEventExpose *event) +{ + GtkPizza *pizza; + GtkPizzaChild *child; + GdkEventExpose child_event; + GList *children; + + 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); + + /* Sometimes, We handle all expose events in window.cpp now. */ + if (pizza->external_expose) + return FALSE; - children = myfixed->children; - while (children) + if (event->window != pizza->bin_window) + return FALSE; + + children = pizza->children; + while (children) { - child = children->data; - children = children->next; - - if (GTK_WIDGET_VISIBLE (child->widget)) - { - child_allocation.x = child->x; - child_allocation.y = child->y; - child_allocation.width = child->widget->requisition.width; - child_allocation.height = child->widget->requisition.height; - gtk_widget_size_allocate (child->widget, &child_allocation); - } + child = children->data; + children = children->next; + + child_event = *event; + + if (GTK_WIDGET_NO_WINDOW (child->widget) && + GTK_WIDGET_DRAWABLE (child->widget) && + gtk_widget_intersect (child->widget, &event->area, &child_event.area)) + { + gtk_widget_event (child->widget, (GdkEvent*) &child_event); + } } + + return TRUE; } static void -gtk_myfixed_paint (GtkWidget *widget, - GdkRectangle *area) +gtk_pizza_add (GtkContainer *container, + GtkWidget *widget) { - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED (widget)); - g_return_if_fail (area != NULL); + g_return_if_fail (container != NULL); + g_return_if_fail (GTK_IS_PIZZA (container)); + g_return_if_fail (widget != NULL); - if (GTK_WIDGET_DRAWABLE (widget)) - gdk_window_clear_area (widget->window, - area->x, area->y, - area->width, area->height); + gtk_pizza_put (GTK_PIZZA (container), widget, 0, 0, 20, 20 ); } static void -gtk_myfixed_draw (GtkWidget *widget, - GdkRectangle *area) +gtk_pizza_remove (GtkContainer *container, + GtkWidget *widget) { - GtkMyFixed *myfixed; - GtkMyFixedChild *child; - GdkRectangle child_area; - GList *children; + GtkPizza *pizza; + GtkPizzaChild *child; + GList *children; + + g_return_if_fail (container != NULL); + g_return_if_fail (GTK_IS_PIZZA (container)); + g_return_if_fail (widget != NULL); - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_MYFIXED (widget)); + pizza = GTK_PIZZA (container); - if (GTK_WIDGET_DRAWABLE (widget)) + children = pizza->children; + while (children) { - myfixed = GTK_MYFIXED (widget); - gtk_myfixed_paint (widget, area); + child = children->data; + + if (child->widget == widget) + { + gtk_widget_unparent (widget); - children = myfixed->children; - while (children) - { - child = children->data; - children = children->next; + /* security checks */ + g_return_if_fail (GTK_IS_WIDGET (widget)); - if (gtk_widget_intersect (child->widget, area, &child_area)) - gtk_widget_draw (child->widget, &child_area); - } + pizza->children = g_list_remove_link (pizza->children, children); + g_list_free (children); + g_free (child); + + /* security checks */ + g_return_if_fail (GTK_IS_WIDGET (widget)); + +#ifndef __WXGTK20__ + GTK_PRIVATE_UNSET_FLAG (widget, GTK_IS_OFFSCREEN); +#endif + + break; + } + + children = children->next; } } -static gint -gtk_myfixed_expose (GtkWidget *widget, - GdkEventExpose *event) +static void +gtk_pizza_forall (GtkContainer *container, + gboolean include_internals, + GtkCallback callback, + gpointer callback_data) { - GtkMyFixed *myfixed; - GtkMyFixedChild *child; - GdkEventExpose child_event; - GList *children; + GtkPizza *pizza; + GtkPizzaChild *child; + GList *children; + + g_return_if_fail (container != NULL); + g_return_if_fail (GTK_IS_PIZZA (container)); + g_return_if_fail (callback != NULL); - g_return_val_if_fail (widget != NULL, FALSE); - g_return_val_if_fail (GTK_IS_MYFIXED (widget), FALSE); - g_return_val_if_fail (event != NULL, FALSE); + pizza = GTK_PIZZA (container); - if (GTK_WIDGET_DRAWABLE (widget)) + children = pizza->children; + while (children) { - myfixed = GTK_MYFIXED (widget); + child = children->data; + children = children->next; + + (* callback) (child->widget, callback_data); + } +} - child_event = *event; - children = myfixed->children; - while (children) - { - child = children->data; - children = children->next; +/* Operations on children + */ + +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_NO_WINDOW (child->widget) && - gtk_widget_intersect (child->widget, &event->area, - &child_event.area)) - gtk_widget_event (child->widget, (GdkEvent*) &child_event); - } +#ifndef __WXGTK20__ + if (GTK_WIDGET_IS_OFFSCREEN (child->widget)) + GTK_PRIVATE_UNSET_FLAG (child->widget, GTK_IS_OFFSCREEN); +#endif } + else + { +#ifndef __WXGTK20__ + if (!GTK_WIDGET_IS_OFFSCREEN (child->widget)) + GTK_PRIVATE_SET_FLAG (child->widget, GTK_IS_OFFSCREEN); +#endif - return FALSE; + if (GTK_WIDGET_MAPPED (child->widget)) + gtk_widget_unmap (child->widget); + } } static void -gtk_myfixed_add (GtkContainer *container, - GtkWidget *widget) +gtk_pizza_allocate_child (GtkPizza *pizza, + GtkPizzaChild *child) { - g_return_if_fail (container != NULL); - g_return_if_fail (GTK_IS_MYFIXED (container)); - g_return_if_fail (widget != NULL); + GtkAllocation allocation; + GtkRequisition requisition; + + allocation.x = child->x - pizza->xoffset; + allocation.y = child->y - pizza->yoffset; + gtk_widget_get_child_requisition (child->widget, &requisition); + allocation.width = requisition.width; + allocation.height = requisition.height; - gtk_myfixed_put (GTK_MYFIXED (container), widget, 0, 0); + gtk_widget_size_allocate (child->widget, &allocation); } static void -gtk_myfixed_remove (GtkContainer *container, - GtkWidget *widget) +gtk_pizza_position_children (GtkPizza *pizza) { - GtkMyFixed *myfixed; - GtkMyFixedChild *child; - GList *children; + GList *tmp_list; + + tmp_list = pizza->children; + while (tmp_list) + { + GtkPizzaChild *child = tmp_list->data; + tmp_list = tmp_list->next; - g_return_if_fail (container != NULL); - g_return_if_fail (GTK_IS_MYFIXED (container)); - g_return_if_fail (widget != NULL); + gtk_pizza_position_child (pizza, child); + } +} + +static void +gtk_pizza_adjust_allocations_recurse (GtkWidget *widget, + gpointer cb_data) +{ + GtkPizzaAdjData *data = cb_data; - myfixed = GTK_MYFIXED (container); + widget->allocation.x += data->dx; + widget->allocation.y += data->dy; - children = myfixed->children; - while (children) + if (GTK_WIDGET_NO_WINDOW (widget) && GTK_IS_CONTAINER (widget)) { - child = children->data; + gtk_container_forall (GTK_CONTAINER (widget), + gtk_pizza_adjust_allocations_recurse, + cb_data); + } +} - if (child->widget == widget) - { - gtk_widget_unparent (widget); +static void +gtk_pizza_adjust_allocations (GtkPizza *pizza, + gint dx, + gint dy) +{ + GList *tmp_list; + GtkPizzaAdjData data; - myfixed->children = g_list_remove_link (myfixed->children, children); - g_list_free (children); - g_free (child); + data.dx = dx; + data.dy = dy; - if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container)) - gtk_widget_queue_resize (GTK_WIDGET (container)); + tmp_list = pizza->children; + while (tmp_list) + { + GtkPizzaChild *child = tmp_list->data; + tmp_list = tmp_list->next; - break; - } + child->widget->allocation.x += dx; + child->widget->allocation.y += dy; - children = children->next; + if (GTK_WIDGET_NO_WINDOW (child->widget) && + GTK_IS_CONTAINER (child->widget)) + { + gtk_container_forall (GTK_CONTAINER (child->widget), + gtk_pizza_adjust_allocations_recurse, + &data); + } } } +/* Callbacks */ + +/* unused */ +#if 0 +/* Send a synthetic expose event to the widget + */ static void -gtk_myfixed_foreach (GtkContainer *container, -#if (GTK_MINOR_VERSION > 0) - gboolean include_internals, -#endif - GtkCallback callback, - gpointer callback_data) +gtk_pizza_expose_area (GtkPizza *pizza, + gint x, gint y, gint width, gint height) { - GtkMyFixed *myfixed; - GtkMyFixedChild *child; - GList *children; + if (pizza->visibility == GDK_VISIBILITY_UNOBSCURED) + { + GdkEventExpose event; + + event.type = GDK_EXPOSE; + event.send_event = TRUE; + event.window = pizza->bin_window; + event.count = 0; - g_return_if_fail (container != NULL); - g_return_if_fail (GTK_IS_MYFIXED (container)); - g_return_if_fail (callback != NULL); + event.area.x = x; + event.area.y = y; + event.area.width = width; + event.area.height = height; - myfixed = GTK_MYFIXED (container); + gdk_window_ref (event.window); + gtk_widget_event (GTK_WIDGET (pizza), (GdkEvent *)&event); + gdk_window_unref (event.window); + } +} +#endif /* unused */ - children = myfixed->children; - while (children) +/* This function is used to find events to process while scrolling + */ + +static Bool +gtk_pizza_expose_predicate (Display *display, + XEvent *xevent, + XPointer arg) +{ + if ((xevent->type == Expose) || + ((xevent->xany.window == *(Window *)arg) && + (xevent->type == ConfigureNotify))) + return True; + else + return False; +} + +/* 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) +{ + GtkWidget *widget; + XEvent xevent; + + gint x,y,w,h,border; + + widget = GTK_WIDGET (pizza); + + pizza->xoffset += dx; + pizza->yoffset += dy; + + if (!GTK_WIDGET_MAPPED (pizza)) + { + gtk_pizza_position_children (pizza); + return; + } + + gtk_pizza_adjust_allocations (pizza, -dx, -dy); + + if (pizza->shadow_type == GTK_MYSHADOW_NONE) + border = 0; + else + if (pizza->shadow_type == GTK_MYSHADOW_THIN) + border = 1; + else + border = 2; + + x = 0; + y = 0; + w = widget->allocation.width - 2*border; + h = widget->allocation.height - 2*border; + + if (dx > 0) + { + if (gravity_works) + { + gdk_window_resize (pizza->bin_window, + w + dx, + h); + gdk_window_move (pizza->bin_window, x-dx, y); + gdk_window_move_resize (pizza->bin_window, x, y, w, h ); + } + else + { + /* FIXME */ + } + } + else if (dx < 0) { - child = children->data; - children = children->next; + if (gravity_works) + { + gdk_window_move_resize (pizza->bin_window, + x + dx, + y, + w - dx, + h); + gdk_window_move (pizza->bin_window, x, y); + gdk_window_resize (pizza->bin_window, w, h ); + } + else + { + /* FIXME */ + } + } - (* callback) (child->widget, callback_data); + if (dy > 0) + { + if (gravity_works) + { + gdk_window_resize (pizza->bin_window, w, h + dy); + gdk_window_move (pizza->bin_window, x, y-dy); + gdk_window_move_resize (pizza->bin_window, + x, y, w, h ); + } + else + { + /* FIXME */ + } } + else if (dy < 0) + { + if (gravity_works) + { + gdk_window_move_resize (pizza->bin_window, + x, y+dy, w, h - dy ); + gdk_window_move (pizza->bin_window, x, y); + gdk_window_resize (pizza->bin_window, w, h ); + } + else + { + /* FIXME */ + } + } + + gtk_pizza_position_children (pizza); + + gdk_flush(); + while (XCheckIfEvent(GDK_WINDOW_XDISPLAY (pizza->bin_window), + &xevent, + gtk_pizza_expose_predicate, + (XPointer)&GDK_WINDOW_XWINDOW (pizza->bin_window))) + { + GdkEvent event; + GtkWidget *event_widget; + + if ((xevent.xany.window == GDK_WINDOW_XWINDOW (pizza->bin_window)) ) + gtk_pizza_filter (&xevent, &event, pizza); + + if (xevent.type == Expose) + { + event.expose.window = gdk_window_lookup (xevent.xany.window); + gdk_window_get_user_data (event.expose.window, + (gpointer *)&event_widget); + + if (event_widget) + { + event.expose.type = GDK_EXPOSE; + event.expose.area.x = xevent.xexpose.x; + event.expose.area.y = xevent.xexpose.y; + event.expose.area.width = xevent.xexpose.width; + event.expose.area.height = xevent.xexpose.height; + event.expose.count = xevent.xexpose.count; + + gdk_window_ref (event.expose.window); + gtk_widget_event (event_widget, &event); + gdk_window_unref (event.expose.window); + } + } + } +} + +/* 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 + * are fixed up in some manner... + * + * This routine identifies expose events that are generated when + * we've temporarily moved the bin_window_origin, and translates + * them or discards them, depending on whether we are obscured + * or not. + */ +static GdkFilterReturn +gtk_pizza_filter (GdkXEvent *gdk_xevent, + GdkEvent *event, + gpointer data) +{ + XEvent *xevent; + GtkPizza *pizza; + + xevent = (XEvent *)gdk_xevent; + + pizza = GTK_PIZZA (data); + + if (!pizza->use_filter) + return GDK_FILTER_CONTINUE; + + switch (xevent->type) + { + case Expose: + if (xevent->xexpose.serial == pizza->configure_serial) + { + xevent->xexpose.x += pizza->scroll_x; + xevent->xexpose.y += pizza->scroll_y; + } + break; + + case ConfigureNotify: + { + pizza->configure_serial = xevent->xconfigure.serial; + pizza->scroll_x = xevent->xconfigure.x; + pizza->scroll_y = xevent->xconfigure.y; + } + break; + } + + return GDK_FILTER_CONTINUE; +} + +/* Although GDK does have a GDK_VISIBILITY_NOTIFY event, + * there is no corresponding event in GTK, so we have + * to get the events from a filter + */ +static GdkFilterReturn +gtk_pizza_main_filter (GdkXEvent *gdk_xevent, + GdkEvent *event, + gpointer data) +{ + XEvent *xevent; + GtkPizza *pizza; + + xevent = (XEvent *)gdk_xevent; + pizza = GTK_PIZZA (data); + + if (!pizza->use_filter) + return GDK_FILTER_CONTINUE; + + if (xevent->type == VisibilityNotify) + { + switch (xevent->xvisibility.state) + { + case VisibilityFullyObscured: + pizza->visibility = GDK_VISIBILITY_FULLY_OBSCURED; + break; + + case VisibilityPartiallyObscured: + pizza->visibility = GDK_VISIBILITY_PARTIAL; + break; + + case VisibilityUnobscured: + pizza->visibility = GDK_VISIBILITY_UNOBSCURED; + break; + } + + return GDK_FILTER_REMOVE; + } + + return GDK_FILTER_CONTINUE; }