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

/*
 * E-table-column-view.c: A canvas view of the TableColumn.
 *
 * Author:
 *   Miguel de Icaza (miguel@gnu.org)
 *
 * Copyright 1999, International GNOME Support.
 */
#include <config.h>
#include "e-table-column.h"
#include "e-table-column-view.h"

#define PARENT_OBJECT_TYPE gnome_canvas_item_get_type ()

static GnomeCanvasItemClass *etci_parent_class;

enum {
    ARG_0,
    ARG_TABLE_COLUMN
};

static void
etci_destroy (GtkObject *object)
{
    ETableColumnItem *etcv = E_TABLE_COLUMN_VIEW (object);

    gtk_object_unref (GTK_OBJECT (etcv));
    
    if (GTK_OBJECT_CLASS (etcv_parent_class)->destroy)
        (*GTK_OBJECT_CLASS (etcv_parent_class)->destroy) (object);
}

static void
etci_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
{
    if (GNOME_CANVAS_ITEM_CLASS(item_bar_parent_class)->update)
        (*GNOME_CANVAS_ITEM_CLASS(item_bar_parent_class)->update)(item, affine, clip_path, flags);

    item->x1 = 0;
    item->y1 = 0;
    item->x2 = INT_MAX;
    item->y2 = INT_MAX;
    gnome_canvas_group_child_bounds (GNOME_CANVAS_GROUP (item->parent), item);
}

static void
etci_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
    GnomeCanvasItem *item;
    ETableColumnItem *etci;
    int v;

    item = GNOME_CANVAS_ITEM (o);
    etci = E_TABLE_COLUMN_ITEM (o);

    switch (arg_id){
    case ARG_TABLE_COLUMN:
        etci->etci = GTK_VALUE_POINTER (*arg);
        break;
    }
    etci_update (item, NULL, NULL, 0);
}

static void
etci_realize (GnomeCanvasItem *item)
{
    ETableColumnItem *etci = E_TABLE_COLUMN_ITEM (item);
    GdkWindow *window;
    GdkColor c;
    
    if (GNOME_CANVAS_ITEM_CLASS (etci_parent_class)-> realize)
        (*GNOME_CANVAS_ITEM_CLASS (etci_parent_class)->realize)(item);

    window = GTK_WIDGET (item->canvas)->window;

    etci->gc = gdk_gc_new (window);
    gnome_canvas_get_color (item->canvas, "black", &c);
    gdk_gc_set_foreground (etci->gc, &c);

    etci->normal_cursor = gdk_cursor_new (GDK_ARROW);
}

static void
etci_unrealize (GnomeCanvasItem *item)
{
    ETableColumnItem *etci = E_TABLE_COLUMN_ITEM (item);

    gdk_gc_unref (etci->gc);
    etci->gc = NULL;

    gdk_cursor_destroy (etci->change_cursor);
    etci->change_cursor = NULL;
    
    gdk_cursor_destroy (etci->normal_cursor);
    etci->normal_cursor = NULL;

    if (GNOME_CANVAS_ITEM_CLASS (etci_parent_class)->unrealize)
        (*GNOME_CANVAS_ITEM_CLASS (etci_parent_class)->unrealize)(item);
}

static void
etci_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x1, int y1, int width, int height)
{
    ETableColumnItem *etci = E_TABLE_COLUMN_ITEM (item);
    GnomeCanvas *canvas = item->canvas;
    GdkGC *gc;
    const int cols = e_table_column_count (etci->etc);
    int x2 = x1 + width;
    int col, total;

    total = 0;
    for (col = 0; col < cols; col++){
        ETableCol *col = e_table_column_get_column (etci->etc, col);
        const int col_width = col->width;

        if (x1 > total + col_width)
            continue;

        if (x2 < total)
            return;

        gc = canvas->style->bg_gc [GTK_STATE_ACTIVE];
        gdk_draw_rectangle (drawble, gc, TRUE, 
        gtk_draw_shadow (canvas->style, drawable, GTK_STATE_NORMAL, GTK_SHADOW_OUT,
                 x, y, width, height
    }
}

static double
etci_point (GnomeCanvasItem *item, double x, double y, int cx, int cy,
        GnomeCanvasItem **actual_item)
{
    *actual_item = *item;
    return 0.0;
}

static void
etci_event (GnomeCanvasItem *item, GdkEvent *e)
{
    switch (e->type){
    default:
        return FALSE;
    }
    return TRUE;
}

static void
etci_class_init (GtkObjectClass *object_class)
{
    GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;

    object_class->destroy = etci_destroy;
    object_class->set_arg = etci_set_arg;

    item_class->update      = etci_update;
    item_class->realize     = etci_realize;
    item_class->unrealize   = etci_unrealize;
    item_class->draw        = etci_draw;
    item_class->point       = etci_point;
    item_class->event       = etci_event;
    
    gtk_object_add_arg_type ("ETableColumnItem::ETableColumn", GTK_TYPE_POINTER,
                 GTK_ARG_WRITABLE, ARG_TABLE_COLUMN);
}

static void
etci_init (GnomeCanvasItem *item)
{
    item->x1 = 0;
    item->y1 = 0;
    item->x2 = 0;
    item->y2 = 0;
}

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

    if (!type){
        GtkTypeInfo info = {
            "ETableColumnItem",
            sizeof (ETableColumnItem),
            sizeof (ETableColumnItemClass),
            (GtkClassInitFunc) etci_class_init,
            (GtkObjectInitFunc) etci_init,
            NULL, /* reserved 1 */
            NULL, /* reserved 2 */
            (GtkClassInitFunc) NULL
        };

        type = gtk_type_unique (PARENT_OBJECT_TYPE, &info);
    }

    return type;
}