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path: root/widgets/meeting-time-sel/e-meeting-time-sel-list-item.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* 
 * Author : 
 *  Damon Chaplin <damon@gtk.org>
 *
 * Copyright 1999, Helix Code, Inc.
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

/*
 * EMeetingTimeSelectorListItem - A GnomeCanvasItem covering the entire attendee
 * list. It just draws the grid lines between the rows and after the icon
 * column. 
 */

#include <config.h>
#include <time.h>
#include "../../e-util/e-canvas.h"
#include "e-meeting-time-sel-list-item.h"
#include "e-meeting-time-sel.h"

/* This is the size of our icons. */
#define E_MEETING_TIME_SELECTOR_ICON_WIDTH 19
#define E_MEETING_TIME_SELECTOR_ICON_HEIGHT 16

#include "e-meeting-time-sel-mail.xpm"
#include "e-meeting-time-sel-no-mail.xpm"

static void e_meeting_time_selector_list_item_class_init (EMeetingTimeSelectorListItemClass *mtsl_item_class);
static void e_meeting_time_selector_list_item_init (EMeetingTimeSelectorListItem *mtsl_item);
static void e_meeting_time_selector_list_item_destroy (GtkObject *object);

static void e_meeting_time_selector_list_item_set_arg (GtkObject *o, GtkArg *arg,
                             guint arg_id);
static void e_meeting_time_selector_list_item_realize (GnomeCanvasItem *item);
static void e_meeting_time_selector_list_item_unrealize (GnomeCanvasItem *item);
static void e_meeting_time_selector_list_item_update (GnomeCanvasItem *item,
                              double *affine,
                              ArtSVP *clip_path, int flags);
static void e_meeting_time_selector_list_item_draw (GnomeCanvasItem *item,
                            GdkDrawable *drawable,
                            int x, int y,
                            int width, int height);
static double e_meeting_time_selector_list_item_point (GnomeCanvasItem *item,
                               double x, double y,
                               int cx, int cy,
                               GnomeCanvasItem **actual_item);
static gint e_meeting_time_selector_list_item_event (GnomeCanvasItem *item,
                             GdkEvent    *event);
static gboolean e_meeting_time_selector_list_item_button_press (EMeetingTimeSelectorListItem *mtsl_item,
                                GdkEvent *event);


static GnomeCanvasItemClass *e_meeting_time_selector_list_item_parent_class;

/* The arguments we take */
enum {
    ARG_0,
    ARG_MEETING_TIME_SELECTOR
};


GtkType
e_meeting_time_selector_list_item_get_type (void)
{
    static GtkType e_meeting_time_selector_list_item_type = 0;

    if (!e_meeting_time_selector_list_item_type) {
        GtkTypeInfo e_meeting_time_selector_list_item_info = {
            "EMeetingTimeSelectorListItem",
            sizeof (EMeetingTimeSelectorListItem),
            sizeof (EMeetingTimeSelectorListItemClass),
            (GtkClassInitFunc) e_meeting_time_selector_list_item_class_init,
            (GtkObjectInitFunc) e_meeting_time_selector_list_item_init,
            NULL, /* reserved_1 */
            NULL, /* reserved_2 */
            (GtkClassInitFunc) NULL
        };

        e_meeting_time_selector_list_item_type = gtk_type_unique (gnome_canvas_item_get_type (), &e_meeting_time_selector_list_item_info);
    }

    return e_meeting_time_selector_list_item_type;
}


static void
e_meeting_time_selector_list_item_class_init (EMeetingTimeSelectorListItemClass *mtsl_item_class)
{
    GtkObjectClass  *object_class;
    GnomeCanvasItemClass *item_class;

    e_meeting_time_selector_list_item_parent_class = gtk_type_class (gnome_canvas_item_get_type());

    object_class = (GtkObjectClass *) mtsl_item_class;
    item_class = (GnomeCanvasItemClass *) mtsl_item_class;

    gtk_object_add_arg_type ("EMeetingTimeSelectorListItem::meeting_time_selector",
                 GTK_TYPE_POINTER, GTK_ARG_WRITABLE,
                 ARG_MEETING_TIME_SELECTOR);

    object_class->destroy = e_meeting_time_selector_list_item_destroy;
    object_class->set_arg = e_meeting_time_selector_list_item_set_arg;

    /* GnomeCanvasItem method overrides */
    item_class->realize     = e_meeting_time_selector_list_item_realize;
    item_class->unrealize   = e_meeting_time_selector_list_item_unrealize;
    item_class->update      = e_meeting_time_selector_list_item_update;
    item_class->draw        = e_meeting_time_selector_list_item_draw;
    item_class->point       = e_meeting_time_selector_list_item_point;
    item_class->event       = e_meeting_time_selector_list_item_event;
}


static void
e_meeting_time_selector_list_item_init (EMeetingTimeSelectorListItem *mtsl_item)
{
    GnomeCanvasItem *item = GNOME_CANVAS_ITEM (mtsl_item);
    GdkColormap *colormap;

    mtsl_item->mts = NULL;

    colormap = gtk_widget_get_default_colormap ();
    mtsl_item->mail_icon = gdk_pixmap_colormap_create_from_xpm_d (NULL, colormap, &mtsl_item->mail_icon_mask, NULL, e_meeting_time_sel_mail_xpm);
    mtsl_item->no_mail_icon = gdk_pixmap_colormap_create_from_xpm_d (NULL, colormap, &mtsl_item->no_mail_icon_mask, NULL, e_meeting_time_sel_no_mail_xpm);

    item->x1 = 0;
    item->y1 = 0;
    item->x2 = 0;
    item->y2 = 0;
}


static void
e_meeting_time_selector_list_item_destroy (GtkObject *object)
{
    EMeetingTimeSelectorListItem *mtsl_item;

    mtsl_item = E_MEETING_TIME_SELECTOR_LIST_ITEM (object);

    gdk_pixmap_unref (mtsl_item->mail_icon);
    gdk_pixmap_unref (mtsl_item->no_mail_icon);
    gdk_bitmap_unref (mtsl_item->mail_icon_mask);
    gdk_bitmap_unref (mtsl_item->mail_icon_mask);

    if (GTK_OBJECT_CLASS (e_meeting_time_selector_list_item_parent_class)->destroy)
        (*GTK_OBJECT_CLASS (e_meeting_time_selector_list_item_parent_class)->destroy)(object);
}


static void
e_meeting_time_selector_list_item_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
    GnomeCanvasItem *item;
    EMeetingTimeSelectorListItem *mtsl_item;

    item = GNOME_CANVAS_ITEM (o);
    mtsl_item = E_MEETING_TIME_SELECTOR_LIST_ITEM (o);
    
    switch (arg_id){
    case ARG_MEETING_TIME_SELECTOR:
        mtsl_item->mts = GTK_VALUE_POINTER (*arg);
        break;
    }
}


static void
e_meeting_time_selector_list_item_realize (GnomeCanvasItem *item)
{
    GnomeCanvas *canvas;
    GdkWindow *window;
    EMeetingTimeSelectorListItem *mtsl_item;

    if (GNOME_CANVAS_ITEM_CLASS (e_meeting_time_selector_list_item_parent_class)->realize)
        (*GNOME_CANVAS_ITEM_CLASS (e_meeting_time_selector_list_item_parent_class)->realize)(item);

    mtsl_item = E_MEETING_TIME_SELECTOR_LIST_ITEM (item);

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

    mtsl_item->main_gc = gdk_gc_new (window);
}


static void
e_meeting_time_selector_list_item_unrealize (GnomeCanvasItem *item)
{
    EMeetingTimeSelectorListItem *mtsl_item;

    mtsl_item = E_MEETING_TIME_SELECTOR_LIST_ITEM (item);

    gdk_gc_unref (mtsl_item->main_gc);
    mtsl_item->main_gc = NULL;

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


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

    /* The item covers the entire canvas area. */
    item->x1 = 0;
    item->y1 = 0;
    item->x2 = INT_MAX;
    item->y2 = INT_MAX;
}


/*
 * DRAWING ROUTINES - functions to paint the canvas item.
 */

static void
e_meeting_time_selector_list_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int width, int height)
{
    EMeetingTimeSelectorListItem *mtsl_item;
    EMeetingTimeSelector *mts;
    EMeetingTimeSelectorAttendee *attendee;
    GdkGC *gc;
    GdkFont *font;
    gint row, row_y, icon_x, icon_y;
    GdkPixmap *pixmap;
    GdkBitmap *mask;

    mtsl_item = E_MEETING_TIME_SELECTOR_LIST_ITEM (item);
    mts = mtsl_item->mts;
    gc = mtsl_item->main_gc;

    gdk_gc_set_foreground (gc, &mts->attendee_list_bg_color);
    gdk_draw_rectangle (drawable, gc, TRUE, 0, 0, width, height);

    gdk_gc_set_foreground (gc, &mts->grid_unused_color);
    gdk_draw_line (drawable, gc, 24 - x, 0, 24 - x, height);

    /* Draw the grid line across the top of the row. */
    row = y / mts->row_height;
    row_y = row * mts->row_height - y;
    while (row_y < height) {
        gdk_draw_line (drawable, gc, 0, row_y, width, row_y);
        row_y += mts->row_height;
    }

    row = y / mts->row_height;
    row_y = row * mts->row_height - y;
    icon_x = (E_MEETING_TIME_SELECTOR_ICON_COLUMN_WIDTH - E_MEETING_TIME_SELECTOR_ICON_WIDTH + 1) / 2 - x;
    icon_y = row_y + (mts->row_height - E_MEETING_TIME_SELECTOR_ICON_HEIGHT + 1) / 2;
    while (row < mts->attendees->len && row_y < height) {
        attendee = &g_array_index (mts->attendees,
                       EMeetingTimeSelectorAttendee, row);

        gdk_gc_set_clip_origin (gc, icon_x, icon_y);

        if (attendee->send_meeting_to) {
            pixmap = mtsl_item->mail_icon;
            mask = mtsl_item->mail_icon_mask;
        } else {
            pixmap = mtsl_item->no_mail_icon;
            mask = mtsl_item->no_mail_icon_mask;
        }

        gdk_gc_set_clip_mask (gc, mask);
        gdk_draw_pixmap (drawable, gc, pixmap, 0, 0,
                 icon_x, icon_y, 24, 24);

        row++;
        row_y += mts->row_height;
        icon_y += mts->row_height;
    }
    gdk_gc_set_clip_mask (gc, NULL);

    /* Draw 'Click here to add attendee' on the last dummy row. */
    row_y = mts->attendees->len * mts->row_height;

    font = GTK_WIDGET (mts)->style->font;
    gdk_gc_set_foreground (gc, &mts->grid_unused_color);
    gdk_draw_string (drawable, font, gc,
             E_MEETING_TIME_SELECTOR_ICON_COLUMN_WIDTH
             + E_MEETING_TIME_SELECTOR_TEXT_X_PAD - x,
             row_y + E_MEETING_TIME_SELECTOR_TEXT_Y_PAD
             + font->ascent + 1 - y,
             "Click here to add attendee");
}


/* This is supposed to return the nearest item the the point and the distance.
   Since we cover the entire canvas we just return ourself and 0 for the
   distance. This is needed so that we get button/motion events. */
static double
e_meeting_time_selector_list_item_point (GnomeCanvasItem *item,
                     double x, double y,
                     int cx, int cy,
                     GnomeCanvasItem **actual_item)
{
    *actual_item = item;
    return 0.0;
}


static gint
e_meeting_time_selector_list_item_event (GnomeCanvasItem *item,
                     GdkEvent *event)
{
    EMeetingTimeSelectorListItem *mtsl_item;

    mtsl_item = E_MEETING_TIME_SELECTOR_LIST_ITEM (item);

    switch (event->type) {
    case GDK_BUTTON_PRESS:
        return e_meeting_time_selector_list_item_button_press (mtsl_item, event);
    case GDK_BUTTON_RELEASE:
        break;
    case GDK_MOTION_NOTIFY:
        break;
    default:
        break;
    }

    return FALSE;
}


static gboolean
e_meeting_time_selector_list_item_button_press (EMeetingTimeSelectorListItem *mtsl_item,
                        GdkEvent *event)
{
    EMeetingTimeSelector *mts;
    EMeetingTimeSelectorAttendee *attendee;
    gint row;
    gboolean return_val;

    mts = mtsl_item->mts;
    row = event->button.y / mts->row_height;

    g_print ("In e_meeting_time_selector_list_item_button_press: %g,%g row:%i\n",
         event->button.x, event->button.y, row);

    if (event->button.x >= E_MEETING_TIME_SELECTOR_ICON_COLUMN_WIDTH) {
        if (row < mts->attendees->len) {
            attendee = &g_array_index (mts->attendees, EMeetingTimeSelectorAttendee, row);
            gtk_signal_emit_by_name (GTK_OBJECT (attendee->text_item),
                         "event", event, &return_val);
            return return_val;
        } else {
            row = e_meeting_time_selector_attendee_add (mts, "",
                                    NULL);

            /* Scroll down to show the last line.?? */
#if 0
            adjustment = GTK_LAYOUT (mts->display_main)->vadjustment;
            adjustment->value = adjustment->upper - adjustment->page_size;
            gtk_adjustment_value_changed (adjustment);
#endif

            attendee = &g_array_index (mts->attendees, EMeetingTimeSelectorAttendee, row);
            e_canvas_item_grab_focus (attendee->text_item);
            return TRUE;
        }
    } else {
        attendee = &g_array_index (mts->attendees,
                       EMeetingTimeSelectorAttendee, row);

        attendee->send_meeting_to = !attendee->send_meeting_to;

        gnome_canvas_request_redraw (GNOME_CANVAS_ITEM (mtsl_item)->canvas,
                         0, row * mts->row_height,
                         E_MEETING_TIME_SELECTOR_ICON_COLUMN_WIDTH,
                         (row + 1) * mts->row_height);
        return TRUE;
    }
}