path: root/e-util/e-cell-hbox.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Srinivasa Ragavan <sragavan@novell.com>
 *
 * A majority of code taken from:
 *
 * the ECellText renderer.
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <ctype.h>
#include <math.h>
#include <stdio.h>

#include <gtk/gtk.h>

/* #include "a11y/gal-a11y-e-cell-registry.h" */
/* #include "a11y/gal-a11y-e-cell-vbox.h" */

#include "e-cell-hbox.h"
#include "e-table-item.h"

G_DEFINE_TYPE (ECellHbox, e_cell_hbox, E_TYPE_CELL)

#define INDENT_AMOUNT 16
#define MAX_CELL_SIZE 25

/*
 * ECell::new_view method
 */
static ECellView *
ecv_new_view (ECell *ecell,
              ETableModel *table_model,
              gpointer e_table_item_view)
{
    ECellHbox *ecv = E_CELL_HBOX (ecell);
    ECellHboxView *hbox_view = g_new0 (ECellHboxView, 1);
    gint i;

    hbox_view->cell_view.ecell = ecell;
    hbox_view->cell_view.e_table_model = table_model;
    hbox_view->cell_view.e_table_item_view = e_table_item_view;
    hbox_view->cell_view.kill_view_cb = NULL;
    hbox_view->cell_view.kill_view_cb_data = NULL;

    /* create our subcell view */
    hbox_view->subcell_view_count = ecv->subcell_count;
    hbox_view->subcell_views = g_new (ECellView *, hbox_view->subcell_view_count);
    hbox_view->model_cols = g_new (int, hbox_view->subcell_view_count);
    hbox_view->def_size_cols = g_new (int, hbox_view->subcell_view_count);

    for (i = 0; i < hbox_view->subcell_view_count; i++) {
        hbox_view->subcell_views[i] = e_cell_new_view (ecv->subcells[i], table_model, e_table_item_view /* XXX */);
        hbox_view->model_cols[i] = ecv->model_cols[i];
        hbox_view->def_size_cols[i] = ecv->def_size_cols[i];
    }

    return (ECellView *) hbox_view;
}

/*
 * ECell::kill_view method
 */
static void
ecv_kill_view (ECellView *ecv)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecv;
    gint i;

    if (hbox_view->cell_view.kill_view_cb)
        (hbox_view->cell_view.kill_view_cb)(ecv, hbox_view->cell_view.kill_view_cb_data);

    if (hbox_view->cell_view.kill_view_cb_data)
        g_list_free (hbox_view->cell_view.kill_view_cb_data);

    /* kill our subcell view */
    for (i = 0; i < hbox_view->subcell_view_count; i++)
        e_cell_kill_view (hbox_view->subcell_views[i]);

    g_free (hbox_view->model_cols);
    g_free (hbox_view->def_size_cols);
    g_free (hbox_view->subcell_views);
    g_free (hbox_view);
}

/*
 * ECell::realize method
 */
static void
ecv_realize (ECellView *ecell_view)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecell_view;
    gint i;

    /* realize our subcell view */
    for (i = 0; i < hbox_view->subcell_view_count; i++)
        e_cell_realize (hbox_view->subcell_views[i]);

    if (E_CELL_CLASS (e_cell_hbox_parent_class)->realize)
        (* E_CELL_CLASS (e_cell_hbox_parent_class)->realize) (ecell_view);
}

/*
 * ECell::unrealize method
 */
static void
ecv_unrealize (ECellView *ecv)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecv;
    gint i;

    /* unrealize our subcell view. */
    for (i = 0; i < hbox_view->subcell_view_count; i++)
        e_cell_unrealize (hbox_view->subcell_views[i]);

    if (E_CELL_CLASS (e_cell_hbox_parent_class)->unrealize)
        (* E_CELL_CLASS (e_cell_hbox_parent_class)->unrealize) (ecv);
}

/*
 * ECell::draw method
 */
static void
ecv_draw (ECellView *ecell_view,
          cairo_t *cr,
          gint model_col,
          gint view_col,
          gint row,
          ECellFlags flags,
          gint x1,
          gint y1,
          gint x2,
          gint y2)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecell_view;

    gint subcell_offset = 0;
    gint i;
    gint allotted_width = x2 - x1;

    for (i = 0; i < hbox_view->subcell_view_count; i++) {
        /* Now cause our subcells to draw their contents,
         * shifted by subcell_offset pixels */
        gint width = allotted_width * hbox_view->def_size_cols[i] / 100;
            /* e_cell_max_width_by_row (hbox_view->subcell_views[i], hbox_view->model_cols[i], view_col, row);
        if (width < hbox_view->def_size_cols[i])
            width = hbox_view->def_size_cols[i];
        printf ("width of %d %d of %d\n", width,hbox_view->def_size_cols[i], allotted_width); */

        e_cell_draw (
            hbox_view->subcell_views[i], cr,
            hbox_view->model_cols[i], view_col, row, flags,
            x1 + subcell_offset , y1,
            x1 + subcell_offset + width, y2);

        subcell_offset += width; /* e_cell_max_width_by_row (hbox_view->subcell_views[i], hbox_view->model_cols[i], view_col, row); */
    }
}

/*
 * ECell::event method
 */
static gint
ecv_event (ECellView *ecell_view,
           GdkEvent *event,
           gint model_col,
           gint view_col,
           gint row,
           ECellFlags flags,
           ECellActions *actions)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecell_view;
    gint y = 0;
    gint i;
    gint subcell_offset = 0;

    switch (event->type) {
    case GDK_BUTTON_PRESS:
    case GDK_BUTTON_RELEASE:
    case GDK_2BUTTON_PRESS:
    case GDK_3BUTTON_PRESS:
        y = event->button.y;
        break;
    case GDK_MOTION_NOTIFY:
        y = event->motion.y;
        break;
    default:
        /* nada */
        break;
    }

    for (i = 0; i < hbox_view->subcell_view_count; i++) {
        gint width = e_cell_max_width_by_row (hbox_view->subcell_views[i], hbox_view->model_cols[i], view_col, row);
        if (width < hbox_view->def_size_cols[i])
            width = hbox_view->def_size_cols[i];
        if (y < subcell_offset + width)
            return e_cell_event (hbox_view->subcell_views[i], event, hbox_view->model_cols[i], view_col, row, flags, actions);
        subcell_offset += width;
    }
    return 0;
}

/*
 * ECell::height method
 */
static gint
ecv_height (ECellView *ecell_view,
            gint model_col,
            gint view_col,
            gint row)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecell_view;
    gint height = 0, max_height = 0;
    gint i;

    for (i = 0; i < hbox_view->subcell_view_count; i++) {
        height = e_cell_height (hbox_view->subcell_views[i], hbox_view->model_cols[i], view_col, row);
        max_height = MAX (max_height, height);
    }
    return max_height;
}

/*
 * ECell::max_width method
 */
static gint
ecv_max_width (ECellView *ecell_view,
               gint model_col,
               gint view_col)
{
    ECellHboxView *hbox_view = (ECellHboxView *) ecell_view;
    gint width = 0;
    gint i;

    for (i = 0; i < hbox_view->subcell_view_count; i++) {
        gint cell_width = e_cell_max_width (hbox_view->subcell_views[i], hbox_view->model_cols[i], view_col);

        if (cell_width < hbox_view->def_size_cols[i])
            cell_width = hbox_view->def_size_cols[i];
        width += cell_width;
    }

    return width;
}

/*
 * GObject::dispose method
 */
static void
ecv_dispose (GObject *object)
{
    ECellHbox *ecv = E_CELL_HBOX (object);
    gint i;

    /* destroy our subcell */
    for (i = 0; i < ecv->subcell_count; i++)
        if (ecv->subcells[i])
            g_object_unref (ecv->subcells[i]);
    g_free (ecv->subcells);
    ecv->subcells = NULL;
    ecv->subcell_count = 0;

    g_free (ecv->model_cols);
    ecv->model_cols = NULL;

    g_free (ecv->def_size_cols);
    ecv->def_size_cols = NULL;

    G_OBJECT_CLASS (e_cell_hbox_parent_class)->dispose (object);
}

static void
e_cell_hbox_class_init (ECellHboxClass *class)
{
    GObjectClass *object_class = G_OBJECT_CLASS (class);
    ECellClass *ecc = E_CELL_CLASS (class);

    object_class->dispose = ecv_dispose;

    ecc->new_view         = ecv_new_view;
    ecc->kill_view        = ecv_kill_view;
    ecc->realize          = ecv_realize;
    ecc->unrealize        = ecv_unrealize;
    ecc->draw             = ecv_draw;
    ecc->event            = ecv_event;
    ecc->height           = ecv_height;

    ecc->max_width        = ecv_max_width;

/*  gal_a11y_e_cell_registry_add_cell_type (NULL, E_TYPE_CELL_HBOX, gal_a11y_e_cell_hbox_new); */
}

static void
e_cell_hbox_init (ECellHbox *ecv)
{
    ecv->subcells = NULL;
    ecv->subcell_count = 0;
}

/**
 * e_cell_hbox_new:
 *
 * Creates a new ECell renderer that can be used to render multiple
 * child cells.
 *
 * Return value: an ECell object that can be used to render multiple
 * child cells.
 **/
ECell *
e_cell_hbox_new (void)
{
    return g_object_new (E_TYPE_CELL_HBOX, NULL);
}

void
e_cell_hbox_append (ECellHbox *hbox,
                    ECell *subcell,
                    gint model_col,
                    gint size)
{
    hbox->subcell_count++;

    hbox->subcells   = g_renew (ECell *, hbox->subcells,   hbox->subcell_count);
    hbox->model_cols = g_renew (int,     hbox->model_cols, hbox->subcell_count);
    hbox->def_size_cols = g_renew (int,     hbox->def_size_cols, hbox->subcell_count);

    hbox->subcells[hbox->subcell_count - 1]   = subcell;
    hbox->model_cols[hbox->subcell_count - 1] = model_col;
    hbox->def_size_cols[hbox->subcell_count - 1] = size;

    if (subcell)
        g_object_ref_sink (subcell);
}