path: root/widgets/e-table/e-table-item.c

/*
 * E-table-item.c: A view of a Table.
 *
 * Author:
 *   Miguel de Icaza (miguel@gnu.org)
 *
 * Copyright 1999, Helix Code, Inc.
 */
#include <config.h>
#include "e-table-item.h"

#define PARENT_OBJECT_TYPE gnome_canvas_item_get_type ()

static GnomeCanvasItemClass *eti_parent_class;

enum {
    ARG_0,
    ARG_TABLE_HEADER,
    ARG_TABLE_MODEL,
    ARG_TABLE_X,
    ARG_TABLE_Y,
};

static void
eti_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
{
    ETableItem *eti = E_TABLE_ITEM (item);
    
    if (GNOME_CANVAS_ITEM_CLASS (eti_parent_class)->update)
        (*GNOME_CANVAS_ITEM_CLASS (eti_parent_class)->update)(item, affine, clip_path, flags);

    item->x1 = eti->x1;
    item->y1 = eti->y1;
    item->x2 = INT_MAX;
    item->y2 = eti->x1 + eti->height;

    gnome_canvas_group_child_bounds (GNOME_CANVAS_GROUP (item->parent), item);
}

static void
eti_remove_table_model (ETableItem *eti)
{
    if (!eti->table_model)
        return;

    gtk_signal_disconnect (eti->table_model_change_id);
    gtk_object_unref (GTK_OBJECT (eti->table_model));

    eti->table_model_change_id = 0;
    eti->table_model = NULL;
}

static void
eti_remove_header_model (ETableItem *eti)
{
    if (!eti->header)
        return;

    gtk_signal_disconnect (eti->header_structure_change_id);
    gtk_signal_disconnect (eti->header_dim_change_id);
    gtk_object_unref (GTK_OBJECT (eti->header));

    eti->header_structure_change_id = 0;
    eti->header_dim_change_id = 0;
    eti->header = NULL;
}

static void
eti_table_model_changed (ETableModel *table_model, ETableItem *eti)
{
    eti->height = e_table_model_height (eti->table_model);

    eti_update (GNOME_CANVAS_ITEM (eti), NULL, NULL, 0);
}

static void
eti_add_table_model (ETableItem *eti, ETableModel *table_model)
{
    g_assert (eti->table_model == NULL);
    
    eti->table_model = table_model;
    gtk_object_ref (GTK_OBJECT (table_model));
    eti->table_model_change_id = gtk_signal_connect (
        GTK_OBJECT (table_model), "model_changed",
        GTK_SIGNAL_FUNC (eti_table_model_changed), eti);
}

static void
eti_header_dim_changed (ETableHeader *eth, int col, ETableItem *eti)
{
    printf ("NOTIFY: Dimension changed");
}

static void
eti_header_structure_changed (ETableHeader *eth, ETableItem *eti)
{
    printf ("NOTIFY: Structure changed");
}

static void
eti_add_header_model (ETableItem *eti, ETableHeader *header)
{
    g_assert (eti->header == NULL);
    
    eti->header = header;
    gtk_object_ref (GTK_OBJECT (header));
    
    eti->header_dim_change_id = gtk_signal_connect (
        GTK_OBJECT (header), "dimension_change",
        GTK_SIGNAL_FUNC (eti_header_dim_changed), eti);

    eti->header_structure_change_id = gtk_signal_connect (
        GTK_OBJECT (header), "structure_changed",
        GTK_SIGNAL_FUNC (eti_header_structure_changed), eti);
}

static void
eti_destroy (GtkObject *object)
{
    ETableItem *eti = E_TABLE_ITEM (object);

    eti_remove_header_model (eti);
    eti_remove_table_model (eti);
    
    if (GTK_OBJECT_CLASS (eti_parent_class)->destroy)
        (*GTK_OBJECT_CLASS (eti_parent_class)->destroy) (object);
}

static void
eti_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
    GnomeCanvasItem *item;
    ETableItem *eti;
    int v;

    item = GNOME_CANVAS_ITEM (o);
    eti = E_TABLE_ITEM (o);

    switch (arg_id){
    case ARG_TABLE_HEADER:
        eti->header = GTK_VALUE_POINTER (*arg);
        gtk_object_ref (GTK_OBJECT (eti->header));
        break;

    case ARG_TABLE_MODEL:
        eti_remove_table_model (eti);
        eti->height = e_table_model_height (eti->table_model);
        break;
        
    case ARG_TABLE_X:
        eti->x1 = GTK_VALUE_INT (*arg);
        break;

    case ARG_TABLE_Y:
        eti->y1 = GTK_VALUE_INT (*arg);
        break;

    }
    eti_update (item, NULL, NULL, 0);
}

static void
eti_init (GnomeCanvasItem *item)
{
    ETableItem *eti = E_TABLE_ITEM (item);
}

static void
eti_realize (GnomeCanvasItem *item)
{
}

static void
eti_unrealize (GnomeCanvasItem *item)
{
}

static void
eti_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x1, int y1, int width, int height)
{
    
}

static double
eti_point (GnomeCanvasItem *item, double x, double y, int cx, int cy,
       GnomeCanvasItem **actual_item)
{
    *actual_item = item;

    return 0.0;
}

static int
eti_event (GnomeCanvasItem *item, GdkEvent *e)
{
    return FALSE;
}
    
static void
eti_class_init (GtkObjectClass *object_class)
{
    GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;

    eti_parent_class = gtk_type_class (PARENT_OBJECT_TYPE);
    
    object_class->destroy = eti_destroy;
    object_class->set_arg = eti_set_arg;

    item_class->update      = eti_update;
    item_class->realize     = eti_realize;
    item_class->unrealize   = eti_unrealize;
    item_class->draw        = eti_draw;
    item_class->point       = eti_point;
    item_class->event       = eti_event;
    
    gtk_object_add_arg_type ("ETableHeaderItem::ETableHeader", GTK_TYPE_POINTER,
                 GTK_ARG_WRITABLE, ARG_TABLE_HEADER);
    gtk_object_add_arg_type ("ETableHeaderItem::ETableModel", GTK_TYPE_POINTER,
                 GTK_ARG_WRITABLE, ARG_TABLE_MODEL);
    gtk_object_add_arg_type ("ETableHeaderItem::x", GTK_TYPE_INT,
                 GTK_ARG_WRITABLE, ARG_TABLE_X);
    gtk_object_add_arg_type ("ETableHeaderItem::y", GTK_TYPE_INT,
                 GTK_ARG_WRITABLE, ARG_TABLE_Y);
}

GtkType
e_table_item_get_type (void)
{
    static GtkType type = 0;

    if (!type){
        GtkTypeInfo info = {
            "ETableItem",
            sizeof (ETableItem),
            sizeof (ETableItemClass),
            (GtkClassInitFunc) eti_class_init,
            (GtkObjectInitFunc) eti_init,
            NULL, /* reserved 1 */
            NULL, /* reserved 2 */
            (GtkClassInitFunc) NULL
        };

        type = gtk_type_unique (PARENT_OBJECT_TYPE, &info);
    }

    return type;
}