src/gtk/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.
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWidgets licence
/////////////////////////////////////////////////////////////////////////// */

#ifdef VMS
#define XCheckIfEvent XCHECKIFEVENT
#endif

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

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

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 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,
                                     GtkWidget        *widget);
static void gtk_pizza_forall        (GtkContainer     *container,
                                     gboolean          include_internals,
                                     GtkCallback       callback,
                                     gpointer          callback_data);

static void     gtk_pizza_allocate_child     (GtkPizza      *pizza,
                                              GtkPizzaChild *child);
static void     gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
                                                      gpointer   cb_data);

static GtkType gtk_pizza_child_type (GtkContainer     *container);

static void  gtk_pizza_scroll_set_adjustments (GtkPizza      *pizza,
                                               GtkAdjustment *hadj,
                                               GtkAdjustment *vadj);

/* static */
GtkContainerClass *pizza_parent_class = NULL;

GtkType
gtk_pizza_get_type ()
{
    static GtkType pizza_type = 0;

    if (!pizza_type)
    {
        static const GTypeInfo pizza_info =
        {
            sizeof (GtkPizzaClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) gtk_pizza_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (GtkPizza),
            16,             /* n_preallocs */
            (GInstanceInitFunc) gtk_pizza_init,
        };
        pizza_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPizza", &pizza_info, (GTypeFlags)0);
    }

    return pizza_type;
}

/* 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);
}

static void
gtk_pizza_class_init (GtkPizzaClass *klass)
{
    GtkObjectClass *object_class;
    GtkWidgetClass *widget_class;
    GtkContainerClass *container_class;

    object_class = (GtkObjectClass*) klass;
    widget_class = (GtkWidgetClass*) klass;
    container_class = (GtkContainerClass*) klass;
    pizza_parent_class = gtk_type_class (GTK_TYPE_CONTAINER);

    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->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->forall = gtk_pizza_forall;

    container_class->child_type = gtk_pizza_child_type;

    klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments;

    widget_class->set_scroll_adjustments_signal =
        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);
}

static GtkType
gtk_pizza_child_type (GtkContainer     *container)
{
    return GTK_TYPE_WIDGET;
}

static void
gtk_pizza_init (GtkPizza *pizza)
{
    GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW);

    pizza->shadow_type = GTK_MYSHADOW_NONE;

    pizza->children = NULL;

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

    pizza->bin_window = NULL;

    pizza->xoffset = 0;
    pizza->yoffset = 0;

    pizza->scroll_x = 0;
    pizza->scroll_y = 0;

    pizza->external_expose = FALSE;
}

GtkWidget*
gtk_pizza_new ()
{
    GtkPizza *pizza;

    pizza = g_object_new (gtk_pizza_get_type (), NULL);

    return GTK_WIDGET (pizza);
}

static void
gtk_pizza_scroll_set_adjustments (GtkPizza     *pizza,
                                    GtkAdjustment  *hadj,
                                    GtkAdjustment  *vadj)
{
   /* We handle scrolling in the wxScrolledWindow, not here. */
}

void
gtk_pizza_set_shadow_type (GtkPizza        *pizza,
                           GtkMyShadowType  type)
{
    g_return_if_fail (pizza != NULL);
    g_return_if_fail (GTK_IS_PIZZA (pizza));

    if (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));
        }
    }
}

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)
{
    GtkPizzaChild *child_info;

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

    child_info = g_new (GtkPizzaChild, 1);

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

    gtk_widget_set_parent (widget, GTK_WIDGET (pizza));

    gtk_widget_set_size_request (widget, width, height);
}

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);

#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)
    {
        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;

            gtk_widget_set_size_request (widget, width, height);

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

            return;
        }
    }
}

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

    gdk_window_show (widget->window);
    gdk_window_show (pizza->bin_window);
}

static void
gtk_pizza_realize (GtkWidget *widget)
{
    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);
    GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

    attributes.window_type = GDK_WINDOW_CHILD;

    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)
    {
        /* 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__ */

    /* 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_SCROLL_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 );

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

    /* 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_pizza_unrealize (GtkWidget *widget)
{
    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;

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

static void
gtk_pizza_size_request (GtkWidget      *widget,
                        GtkRequisition *requisition)
{
    GtkPizza *pizza;
    GtkPizzaChild *child;
    GList *children;
    GtkRequisition child_requisition;

    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;

        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_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_allocate_child (pizza, child);
    }
}

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

    gtk_pizza_put (GTK_PIZZA (container), widget, 0, 0, 20, 20 );
}

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

    pizza = GTK_PIZZA (container);

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

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

            /* security checks */
            g_return_if_fail (GTK_IS_WIDGET (widget));

            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));

            break;
        }

        children = children->next;
    }
}

static void
gtk_pizza_forall (GtkContainer *container,
                  gboolean      include_internals,
                  GtkCallback   callback,
                  gpointer      callback_data)
{
    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 != (GtkCallback)NULL);

    pizza = GTK_PIZZA (container);

    children = pizza->children;
    while (children)
    {
        child = children->data;
        children = children->next;

        (* callback) (child->widget, callback_data);
    }
}

static void
gtk_pizza_allocate_child (GtkPizza      *pizza,
                          GtkPizzaChild *child)
{
    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_widget_size_allocate (child->widget, &allocation);
}

static void
gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
                                       gpointer   cb_data)
{
    GtkPizzaAdjData *data = cb_data;

    widget->allocation.x += data->dx;
    widget->allocation.y += data->dy;

    if (GTK_WIDGET_NO_WINDOW (widget) && GTK_IS_CONTAINER (widget))
    {
        gtk_container_forall (GTK_CONTAINER (widget),
                          gtk_pizza_adjust_allocations_recurse,
                          cb_data);
    }
}

static void
gtk_pizza_adjust_allocations (GtkPizza *pizza,
                               gint       dx,
                               gint       dy)
{
    GList *tmp_list;
    GtkPizzaAdjData data;

    data.dx = dx;
    data.dy = dy;

    tmp_list = pizza->children;
    while (tmp_list)
    {
        GtkPizzaChild *child = tmp_list->data;
        tmp_list = tmp_list->next;

        child->widget->allocation.x += dx;
        child->widget->allocation.y += dy;

        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);
        }
    }
}

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

#ifdef __cplusplus
}
#endif /* __cplusplus */
Commit	Line	Data
	1	/* ///////////////////////////////////////////////////////////////////////////
	2	// Name: src/gtk/win_gtk.c
	3	// Purpose: Native GTK+ widget for wxWidgets, based on GtkLayout and
	4	// GtkFixed. It makes use of the gravity window property and
	5	// therefore does not work with GTK 1.0.
	6	// Author: Robert Roebling
	7	// Id: $Id$
	8	// Copyright: (c) 1998 Robert Roebling
	9	// Licence: wxWidgets licence
	10	/////////////////////////////////////////////////////////////////////////// */
	11
	12	#ifdef VMS
	13	#define XCheckIfEvent XCHECKIFEVENT
	14	#endif
	15
	16	#include "wx/platform.h"
	17	#include "wx/gtk/win_gtk.h"
	18
	19	#ifdef __cplusplus
	20	extern "C" {
	21	#endif /* __cplusplus */
	22
	23	typedef struct _GtkPizzaAdjData GtkPizzaAdjData;
	24
	25	struct _GtkPizzaAdjData
	26	{
	27	gint dx;
	28	gint dy;
	29	};
	30
	31	static void gtk_pizza_class_init (GtkPizzaClass *klass);
	32	static void gtk_pizza_init (GtkPizza *pizza);
	33
	34	static void gtk_pizza_realize (GtkWidget *widget);
	35	static void gtk_pizza_unrealize (GtkWidget *widget);
	36
	37	static void gtk_pizza_map (GtkWidget *widget);
	38
	39	static void gtk_pizza_size_request (GtkWidget *widget,
	40	GtkRequisition *requisition);
	41	static void gtk_pizza_size_allocate (GtkWidget *widget,
	42	GtkAllocation *allocation);
	43	static gint gtk_pizza_expose (GtkWidget *widget,
	44	GdkEventExpose *event);
	45	static void gtk_pizza_style_set (GtkWidget *widget,
	46	GtkStyle *previous_style);
	47	static void gtk_pizza_add (GtkContainer *container,
	48	GtkWidget *widget);
	49	static void gtk_pizza_remove (GtkContainer *container,
	50	GtkWidget *widget);
	51	static void gtk_pizza_forall (GtkContainer *container,
	52	gboolean include_internals,
	53	GtkCallback callback,
	54	gpointer callback_data);
	55
	56	static void gtk_pizza_allocate_child (GtkPizza *pizza,
	57	GtkPizzaChild *child);
	58	static void gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
	59	gpointer cb_data);
	60
	61	static GtkType gtk_pizza_child_type (GtkContainer *container);
	62
	63	static void gtk_pizza_scroll_set_adjustments (GtkPizza *pizza,
	64	GtkAdjustment *hadj,
	65	GtkAdjustment *vadj);
	66
	67	/* static */
	68	GtkContainerClass *pizza_parent_class = NULL;
	69
	70	GtkType
	71	gtk_pizza_get_type ()
	72	{
	73	static GtkType pizza_type = 0;
	74
	75	if (!pizza_type)
	76	{
	77	static const GTypeInfo pizza_info =
	78	{
	79	sizeof (GtkPizzaClass),
	80	NULL, /* base_init */
	81	NULL, /* base_finalize */
	82	(GClassInitFunc) gtk_pizza_class_init,
	83	NULL, /* class_finalize */
	84	NULL, /* class_data */
	85	sizeof (GtkPizza),
	86	16, /* n_preallocs */
	87	(GInstanceInitFunc) gtk_pizza_init,
	88	};
	89	pizza_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPizza", &pizza_info, (GTypeFlags)0);
	90	}
	91
	92	return pizza_type;
	93	}
	94
	95	/* Marshaller needed for set_scroll_adjustments signal,
	96	generated with GLib-2.4.6 glib-genmarshal */
	97	#define g_marshal_value_peek_object(v) g_value_get_object (v)
	98	static void
	99	g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure *closure,
	100	GValue *return_value,
	101	guint n_param_values,
	102	const GValue *param_values,
	103	gpointer invocation_hint,
	104	gpointer marshal_data)
	105	{
	106	typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer data1,
	107	gpointer arg_1,
	108	gpointer arg_2,
	109	gpointer data2);
	110	register GMarshalFunc_VOID__OBJECT_OBJECT callback;
	111	register GCClosure cc = (GCClosure) closure;
	112	register gpointer data1, data2;
	113
	114	g_return_if_fail (n_param_values == 3);
	115
	116	if (G_CCLOSURE_SWAP_DATA (closure))
	117	{
	118	data1 = closure->data;
	119	data2 = g_value_peek_pointer (param_values + 0);
	120	}
	121	else
	122	{
	123	data1 = g_value_peek_pointer (param_values + 0);
	124	data2 = closure->data;
	125	}
	126	callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);
	127
	128	callback (data1,
	129	g_marshal_value_peek_object (param_values + 1),
	130	g_marshal_value_peek_object (param_values + 2),
	131	data2);
	132	}
	133
	134	static void
	135	gtk_pizza_class_init (GtkPizzaClass *klass)
	136	{
	137	GtkObjectClass *object_class;
	138	GtkWidgetClass *widget_class;
	139	GtkContainerClass *container_class;
	140
	141	object_class = (GtkObjectClass*) klass;
	142	widget_class = (GtkWidgetClass*) klass;
	143	container_class = (GtkContainerClass*) klass;
	144	pizza_parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
	145
	146	widget_class->map = gtk_pizza_map;
	147	widget_class->realize = gtk_pizza_realize;
	148	widget_class->unrealize = gtk_pizza_unrealize;
	149	widget_class->size_request = gtk_pizza_size_request;
	150	widget_class->size_allocate = gtk_pizza_size_allocate;
	151	widget_class->expose_event = gtk_pizza_expose;
	152	widget_class->style_set = gtk_pizza_style_set;
	153
	154	container_class->add = gtk_pizza_add;
	155	container_class->remove = gtk_pizza_remove;
	156	container_class->forall = gtk_pizza_forall;
	157
	158	container_class->child_type = gtk_pizza_child_type;
	159
	160	klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments;
	161
	162	widget_class->set_scroll_adjustments_signal =
	163	g_signal_new(
	164	"set_scroll_adjustments",
	165	G_TYPE_FROM_CLASS(object_class),
	166	G_SIGNAL_RUN_LAST,
	167	G_STRUCT_OFFSET(GtkPizzaClass, set_scroll_adjustments),
	168	NULL,
	169	NULL,
	170	g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
	171	G_TYPE_NONE,
	172	2,
	173	GTK_TYPE_ADJUSTMENT,
	174	GTK_TYPE_ADJUSTMENT);
	175	}
	176
	177	static GtkType
	178	gtk_pizza_child_type (GtkContainer *container)
	179	{
	180	return GTK_TYPE_WIDGET;
	181	}
	182
	183	static void
	184	gtk_pizza_init (GtkPizza *pizza)
	185	{
	186	GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW);
	187
	188	pizza->shadow_type = GTK_MYSHADOW_NONE;
	189
	190	pizza->children = NULL;
	191
	192	pizza->width = 20;
	193	pizza->height = 20;
	194
	195	pizza->bin_window = NULL;
	196
	197	pizza->xoffset = 0;
	198	pizza->yoffset = 0;
	199
	200	pizza->scroll_x = 0;
	201	pizza->scroll_y = 0;
	202
	203	pizza->external_expose = FALSE;
	204	}
	205
	206	GtkWidget*
	207	gtk_pizza_new ()
	208	{
	209	GtkPizza *pizza;
	210
	211	pizza = g_object_new (gtk_pizza_get_type (), NULL);
	212
	213	return GTK_WIDGET (pizza);
	214	}
	215
	216	static void
	217	gtk_pizza_scroll_set_adjustments (GtkPizza *pizza,
	218	GtkAdjustment *hadj,
	219	GtkAdjustment *vadj)
	220	{
	221	/* We handle scrolling in the wxScrolledWindow, not here. */
	222	}
	223
	224	void
	225	gtk_pizza_set_shadow_type (GtkPizza *pizza,
	226	GtkMyShadowType type)
	227	{
	228	g_return_if_fail (pizza != NULL);
	229	g_return_if_fail (GTK_IS_PIZZA (pizza));
	230
	231	if (pizza->shadow_type != type)
	232	{
	233	pizza->shadow_type = type;
	234
	235	if (GTK_WIDGET_VISIBLE (pizza))
	236	{
	237	gtk_widget_size_allocate (GTK_WIDGET (pizza), &(GTK_WIDGET (pizza)->allocation));
	238	gtk_widget_queue_draw (GTK_WIDGET (pizza));
	239	}
	240	}
	241	}
	242
	243	void
	244	gtk_pizza_set_external (GtkPizza *pizza,
	245	gboolean expose)
	246	{
	247	g_return_if_fail (pizza != NULL);
	248	g_return_if_fail (GTK_IS_PIZZA (pizza));
	249
	250	pizza->external_expose = expose;
	251	}
	252
	253	void
	254	gtk_pizza_put (GtkPizza *pizza,
	255	GtkWidget *widget,
	256	gint x,
	257	gint y,
	258	gint width,
	259	gint height)
	260	{
	261	GtkPizzaChild *child_info;
	262
	263	g_return_if_fail (pizza != NULL);
	264	g_return_if_fail (GTK_IS_PIZZA (pizza));
	265	g_return_if_fail (widget != NULL);
	266
	267	child_info = g_new (GtkPizzaChild, 1);
	268
	269	child_info->widget = widget;
	270	child_info->x = x;
	271	child_info->y = y;
	272	child_info->width = width;
	273	child_info->height = height;
	274
	275	pizza->children = g_list_append (pizza->children, child_info);
	276
	277	if (GTK_WIDGET_REALIZED (pizza))
	278	gtk_widget_set_parent_window (widget, pizza->bin_window);
	279
	280	gtk_widget_set_parent (widget, GTK_WIDGET (pizza));
	281
	282	gtk_widget_set_size_request (widget, width, height);
	283	}
	284
	285	void
	286	gtk_pizza_set_size (GtkPizza *pizza,
	287	GtkWidget *widget,
	288	gint x,
	289	gint y,
	290	gint width,
	291	gint height)
	292	{
	293	GtkPizzaChild *child;
	294	GList *children;
	295
	296	g_return_if_fail (pizza != NULL);
	297	g_return_if_fail (GTK_IS_PIZZA (pizza));
	298	g_return_if_fail (widget != NULL);
	299
	300	#ifndef WX_WARN_ILLEGAL_SETSIZE
	301	/* this really shouldn't happen -- but it does, a lot, right now and we
	302	can't pass negative values to gtk_widget_set_size_request() without getting
	303	a warning printed out, so filter them out here */
	304	if ( width < 0 )
	305	width = 0;
	306	if ( height < 0 )
	307	height = 0;
	308	#endif
	309
	310	children = pizza->children;
	311	while (children)
	312	{
	313	child = children->data;
	314	children = children->next;
	315
	316	if (child->widget == widget)
	317	{
	318	if ((child->x == x) &&
	319	(child->y == y) &&
	320	(child->width == width) &&
	321	(child->height == height)) return;
	322
	323	child->x = x;
	324	child->y = y;
	325	child->width = width;
	326	child->height = height;
	327
	328	gtk_widget_set_size_request (widget, width, height);
	329
	330	if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (pizza))
	331	gtk_widget_queue_resize (widget);
	332
	333	return;
	334	}
	335	}
	336	}
	337
	338	static void
	339	gtk_pizza_map (GtkWidget *widget)
	340	{
	341	GtkPizza *pizza;
	342	GtkPizzaChild *child;
	343	GList *children;
	344
	345	g_return_if_fail (widget != NULL);
	346	g_return_if_fail (GTK_IS_PIZZA (widget));
	347
	348	GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
	349	pizza = GTK_PIZZA (widget);
	350
	351	children = pizza->children;
	352	while (children)
	353	{
	354	child = children->data;
	355	children = children->next;
	356
	357	if ( GTK_WIDGET_VISIBLE (child->widget) &&
	358	!GTK_WIDGET_MAPPED (child->widget) )
	359	{
	360	gtk_widget_map (child->widget);
	361	}
	362	}
	363
	364	gdk_window_show (widget->window);
	365	gdk_window_show (pizza->bin_window);
	366	}
	367
	368	static void
	369	gtk_pizza_realize (GtkWidget *widget)
	370	{
	371	GtkPizza *pizza;
	372	GdkWindowAttr attributes;
	373	gint attributes_mask;
	374	GtkPizzaChild *child;
	375	GList *children;
	376
	377	g_return_if_fail (widget != NULL);
	378	g_return_if_fail (GTK_IS_PIZZA (widget));
	379
	380	pizza = GTK_PIZZA (widget);
	381	GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
	382
	383	attributes.window_type = GDK_WINDOW_CHILD;
	384
	385	attributes.x = widget->allocation.x;
	386	attributes.y = widget->allocation.y;
	387	attributes.width = widget->allocation.width;
	388	attributes.height = widget->allocation.height;
	389
	390	#ifndef __WXUNIVERSAL__
	391	if (pizza->shadow_type == GTK_MYSHADOW_NONE)
	392	{
	393	/* no border, no changes to sizes */
	394	}
	395	else if (pizza->shadow_type == GTK_MYSHADOW_THIN)
	396	{
	397	/* GTK_MYSHADOW_THIN == wxSIMPLE_BORDER */
	398	attributes.x += 1;
	399	attributes.y += 1;
	400	attributes.width -= 2;
	401	attributes.height -= 2;
	402	}
	403	else
	404	{
	405	/* GTK_MYSHADOW_IN == wxSUNKEN_BORDER */
	406	/* GTK_MYSHADOW_OUT == wxRAISED_BORDER */
	407	attributes.x += 2;
	408	attributes.y += 2;
	409	attributes.width -= 4;
	410	attributes.height -= 4;
	411	}
	412	#endif /* __WXUNIVERSAL__ */
	413
	414	/* minimal size */
	415	if (attributes.width < 2) attributes.width = 2;
	416	if (attributes.height < 2) attributes.height = 2;
	417
	418	attributes.wclass = GDK_INPUT_OUTPUT;
	419	attributes.visual = gtk_widget_get_visual (widget);
	420	attributes.colormap = gtk_widget_get_colormap (widget);
	421	attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
	422	attributes_mask = GDK_WA_X \| GDK_WA_Y \| GDK_WA_VISUAL \| GDK_WA_COLORMAP;
	423
	424	widget->window = gdk_window_new(gtk_widget_get_parent_window (widget),
	425	&attributes, attributes_mask);
	426	gdk_window_set_user_data (widget->window, widget);
	427
	428	attributes.x = 0;
	429	attributes.y = 0;
	430
	431	attributes.event_mask = gtk_widget_get_events (widget);
	432	attributes.event_mask \|= GDK_EXPOSURE_MASK \|
	433	GDK_SCROLL_MASK \|
	434	GDK_POINTER_MOTION_MASK \|
	435	GDK_POINTER_MOTION_HINT_MASK \|
	436	GDK_BUTTON_MOTION_MASK \|
	437	GDK_BUTTON1_MOTION_MASK \|
	438	GDK_BUTTON2_MOTION_MASK \|
	439	GDK_BUTTON3_MOTION_MASK \|
	440	GDK_BUTTON_PRESS_MASK \|
	441	GDK_BUTTON_RELEASE_MASK \|
	442	GDK_KEY_PRESS_MASK \|
	443	GDK_KEY_RELEASE_MASK \|
	444	GDK_ENTER_NOTIFY_MASK \|
	445	GDK_LEAVE_NOTIFY_MASK \|
	446	GDK_FOCUS_CHANGE_MASK;
	447
	448	pizza->bin_window = gdk_window_new(widget->window,
	449	&attributes, attributes_mask);
	450	gdk_window_set_user_data (pizza->bin_window, widget);
	451
	452	widget->style = gtk_style_attach (widget->style, widget->window);
	453	gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
	454	gtk_style_set_background (widget->style, pizza->bin_window, GTK_STATE_NORMAL );
	455
	456	/*
	457	gdk_window_set_back_pixmap( widget->window, NULL, FALSE );
	458	gdk_window_set_back_pixmap( pizza->bin_window, NULL, FALSE );
	459	*/
	460
	461	/* cannot be done before realisation */
	462	children = pizza->children;
	463	while (children)
	464	{
	465	child = children->data;
	466	children = children->next;
	467
	468	gtk_widget_set_parent_window (child->widget, pizza->bin_window);
	469	}
	470	}
	471
	472	static void
	473	gtk_pizza_unrealize (GtkWidget *widget)
	474	{
	475	GtkPizza *pizza;
	476
	477	g_return_if_fail (widget != NULL);
	478	g_return_if_fail (GTK_IS_PIZZA (widget));
	479
	480	pizza = GTK_PIZZA (widget);
	481
	482	gdk_window_set_user_data (pizza->bin_window, NULL);
	483	gdk_window_destroy (pizza->bin_window);
	484	pizza->bin_window = NULL;
	485
	486	if (GTK_WIDGET_CLASS (pizza_parent_class)->unrealize)
	487	(* GTK_WIDGET_CLASS (pizza_parent_class)->unrealize) (widget);
	488	}
	489
	490	static void
	491	gtk_pizza_size_request (GtkWidget *widget,
	492	GtkRequisition *requisition)
	493	{
	494	GtkPizza *pizza;
	495	GtkPizzaChild *child;
	496	GList *children;
	497	GtkRequisition child_requisition;
	498
	499	g_return_if_fail (widget != NULL);
	500	g_return_if_fail (GTK_IS_PIZZA (widget));
	501	g_return_if_fail (requisition != NULL);
	502
	503	pizza = GTK_PIZZA (widget);
	504
	505	children = pizza->children;
	506	while (children)
	507	{
	508	child = children->data;
	509	children = children->next;
	510
	511	if (GTK_WIDGET_VISIBLE (child->widget))
	512	{
	513	gtk_widget_size_request (child->widget, &child_requisition);
	514	}
	515	}
	516
	517	/* request very little, I'm not sure if requesting nothing
	518	will always have positive effects on stability... */
	519	requisition->width = 2;
	520	requisition->height = 2;
	521	}
	522
	523	static void
	524	gtk_pizza_size_allocate (GtkWidget *widget,
	525	GtkAllocation *allocation)
	526	{
	527	GtkPizza *pizza;
	528	gint border;
	529	gint x,y,w,h;
	530	GtkPizzaChild *child;
	531	GList *children;
	532
	533	g_return_if_fail (widget != NULL);
	534	g_return_if_fail (GTK_IS_PIZZA(widget));
	535	g_return_if_fail (allocation != NULL);
	536
	537	pizza = GTK_PIZZA (widget);
	538
	539	widget->allocation = *allocation;
	540
	541	if (pizza->shadow_type == GTK_MYSHADOW_NONE)
	542	border = 0;
	543	else
	544	if (pizza->shadow_type == GTK_MYSHADOW_THIN)
	545	border = 1;
	546	else
	547	border = 2;
	548
	549	x = allocation->x + border;
	550	y = allocation->y + border;
	551	w = allocation->width - border*2;
	552	h = allocation->height - border*2;
	553
	554	if (GTK_WIDGET_REALIZED (widget))
	555	{
	556	gdk_window_move_resize( widget->window, x, y, w, h );
	557	gdk_window_move_resize( pizza->bin_window, 0, 0, w, h );
	558	}
	559
	560	children = pizza->children;
	561	while (children)
	562	{
	563	child = children->data;
	564	children = children->next;
	565
	566	gtk_pizza_allocate_child (pizza, child);
	567	}
	568	}
	569
	570	static gint
	571	gtk_pizza_expose (GtkWidget *widget,
	572	GdkEventExpose *event)
	573	{
	574	GtkPizza *pizza;
	575
	576	g_return_val_if_fail (widget != NULL, FALSE);
	577	g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE);
	578	g_return_val_if_fail (event != NULL, FALSE);
	579
	580	pizza = GTK_PIZZA (widget);
	581
	582	if (event->window != pizza->bin_window)
	583	return FALSE;
	584
	585	/* We handle all expose events in window.cpp now. */
	586	if (pizza->external_expose)
	587	return FALSE;
	588
	589	(* GTK_WIDGET_CLASS (pizza_parent_class)->expose_event) (widget, event);
	590
	591	return FALSE;
	592	}
	593
	594	static void
	595	gtk_pizza_style_set(GtkWidget widget, GtkStyle previous_style)
	596	{
	597	if (GTK_WIDGET_REALIZED(widget))
	598	{
	599	gtk_style_set_background(widget->style, widget->window, GTK_STATE_NORMAL);
	600	gtk_style_set_background(widget->style, GTK_PIZZA(widget)->bin_window, GTK_STATE_NORMAL );
	601	}
	602
	603	(* GTK_WIDGET_CLASS (pizza_parent_class)->style_set) (widget, previous_style);
	604	}
	605
	606	static void
	607	gtk_pizza_add (GtkContainer *container,
	608	GtkWidget *widget)
	609	{
	610	g_return_if_fail (container != NULL);
	611	g_return_if_fail (GTK_IS_PIZZA (container));
	612	g_return_if_fail (widget != NULL);
	613
	614	gtk_pizza_put (GTK_PIZZA (container), widget, 0, 0, 20, 20 );
	615	}
	616
	617	static void
	618	gtk_pizza_remove (GtkContainer *container,
	619	GtkWidget *widget)
	620	{
	621	GtkPizza *pizza;
	622	GtkPizzaChild *child;
	623	GList *children;
	624
	625	g_return_if_fail (container != NULL);
	626	g_return_if_fail (GTK_IS_PIZZA (container));
	627	g_return_if_fail (widget != NULL);
	628
	629	pizza = GTK_PIZZA (container);
	630
	631	children = pizza->children;
	632	while (children)
	633	{
	634	child = children->data;
	635
	636	if (child->widget == widget)
	637	{
	638	gtk_widget_unparent (widget);
	639
	640	/* security checks */
	641	g_return_if_fail (GTK_IS_WIDGET (widget));
	642
	643	pizza->children = g_list_remove_link (pizza->children, children);
	644	g_list_free (children);
	645	g_free (child);
	646
	647	/* security checks */
	648	g_return_if_fail (GTK_IS_WIDGET (widget));
	649
	650	break;
	651	}
	652
	653	children = children->next;
	654	}
	655	}
	656
	657	static void
	658	gtk_pizza_forall (GtkContainer *container,
	659	gboolean include_internals,
	660	GtkCallback callback,
	661	gpointer callback_data)
	662	{
	663	GtkPizza *pizza;
	664	GtkPizzaChild *child;
	665	GList *children;
	666
	667	g_return_if_fail (container != NULL);
	668	g_return_if_fail (GTK_IS_PIZZA (container));
	669	g_return_if_fail (callback != (GtkCallback)NULL);
	670
	671	pizza = GTK_PIZZA (container);
	672
	673	children = pizza->children;
	674	while (children)
	675	{
	676	child = children->data;
	677	children = children->next;
	678
	679	(* callback) (child->widget, callback_data);
	680	}
	681	}
	682
	683	static void
	684	gtk_pizza_allocate_child (GtkPizza *pizza,
	685	GtkPizzaChild *child)
	686	{
	687	GtkAllocation allocation;
	688	GtkRequisition requisition;
	689
	690	allocation.x = child->x - pizza->xoffset;
	691	allocation.y = child->y - pizza->yoffset;
	692	gtk_widget_get_child_requisition (child->widget, &requisition);
	693	allocation.width = requisition.width;
	694	allocation.height = requisition.height;
	695
	696	gtk_widget_size_allocate (child->widget, &allocation);
	697	}
	698
	699	static void
	700	gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
	701	gpointer cb_data)
	702	{
	703	GtkPizzaAdjData *data = cb_data;
	704
	705	widget->allocation.x += data->dx;
	706	widget->allocation.y += data->dy;
	707
	708	if (GTK_WIDGET_NO_WINDOW (widget) && GTK_IS_CONTAINER (widget))
	709	{
	710	gtk_container_forall (GTK_CONTAINER (widget),
	711	gtk_pizza_adjust_allocations_recurse,
	712	cb_data);
	713	}
	714	}
	715
	716	static void
	717	gtk_pizza_adjust_allocations (GtkPizza *pizza,
	718	gint dx,
	719	gint dy)
	720	{
	721	GList *tmp_list;
	722	GtkPizzaAdjData data;
	723
	724	data.dx = dx;
	725	data.dy = dy;
	726
	727	tmp_list = pizza->children;
	728	while (tmp_list)
	729	{
	730	GtkPizzaChild *child = tmp_list->data;
	731	tmp_list = tmp_list->next;
	732
	733	child->widget->allocation.x += dx;
	734	child->widget->allocation.y += dy;
	735
	736	if (GTK_WIDGET_NO_WINDOW (child->widget) &&
	737	GTK_IS_CONTAINER (child->widget))
	738	{
	739	gtk_container_forall (GTK_CONTAINER (child->widget),
	740	gtk_pizza_adjust_allocations_recurse,
	741	&data);
	742	}
	743	}
	744	}
	745
	746	void
	747	gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
	748	{
	749	pizza->xoffset += dx;
	750	pizza->yoffset += dy;
	751
	752	gtk_pizza_adjust_allocations (pizza, -dx, -dy);
	753
	754	if (pizza->bin_window)
	755	gdk_window_scroll( pizza->bin_window, -dx, -dy );
	756	}
	757
	758	#ifdef __cplusplus
	759	}
	760	#endif /* __cplusplus */