/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-reflow-sorted.c
* Copyright (C) 2000 Helix Code, Inc.
* Author: Chris Lahey <clahey@helixcode.com>
*
* This library 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 library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <math.h>
#include <gnome.h>
#include "e-reflow-sorted.h"
#include <e-util/e-canvas-utils.h>
#include <e-util/e-canvas.h>
#include <e-util/e-util.h>
static void e_reflow_sorted_init (EReflowSorted *card);
static void e_reflow_sorted_class_init (EReflowSortedClass *klass);
static void e_reflow_sorted_set_arg (GtkObject *o, GtkArg *arg, guint arg_id);
static void e_reflow_sorted_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);
static void e_reflow_sorted_add_item(EReflow *e_reflow, GnomeCanvasItem *item);
#define E_REFLOW_DIVIDER_WIDTH 2
#define E_REFLOW_BORDER_WIDTH 7
#define E_REFLOW_FULL_GUTTER (E_REFLOW_DIVIDER_WIDTH + E_REFLOW_BORDER_WIDTH * 2)
static EReflowClass *parent_class = NULL;
/* The arguments we take */
enum {
ARG_0,
ARG_COMPARE_FUNC,
ARG_STRING_FUNC
};
GtkType
e_reflow_sorted_get_type (void)
{
static GtkType reflow_type = 0;
if (!reflow_type)
{
static const GtkTypeInfo reflow_info =
{
"EReflowSorted",
sizeof (EReflowSorted),
sizeof (EReflowSortedClass),
(GtkClassInitFunc) e_reflow_sorted_class_init,
(GtkObjectInitFunc) e_reflow_sorted_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
reflow_type = gtk_type_unique (e_reflow_get_type (), &reflow_info);
}
return reflow_type;
}
static void
e_reflow_sorted_class_init (EReflowSortedClass *klass)
{
GtkObjectClass *object_class;
EReflowClass *reflow_class;
object_class = (GtkObjectClass*) klass;
reflow_class = E_REFLOW_CLASS (klass);
parent_class = gtk_type_class (e_reflow_get_type ());
gtk_object_add_arg_type ("EReflowSorted::compare_func", GTK_TYPE_POINTER,
GTK_ARG_READWRITE, ARG_COMPARE_FUNC);
gtk_object_add_arg_type ("EReflowSorted::string_func", GTK_TYPE_POINTER,
GTK_ARG_READWRITE, ARG_STRING_FUNC);
reflow_class->add_item = e_reflow_sorted_add_item;
object_class->set_arg = e_reflow_sorted_set_arg;
object_class->get_arg = e_reflow_sorted_get_arg;
}
static void
e_reflow_sorted_init (EReflowSorted *reflow)
{
reflow->compare_func = NULL;
reflow->string_func = NULL;
}
static void
e_reflow_sorted_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
GnomeCanvasItem *item;
EReflowSorted *e_reflow_sorted;
item = GNOME_CANVAS_ITEM (o);
e_reflow_sorted = E_REFLOW_SORTED (o);
switch (arg_id){
case ARG_COMPARE_FUNC:
e_reflow_sorted->compare_func = GTK_VALUE_POINTER (*arg);
break;
case ARG_STRING_FUNC:
e_reflow_sorted->string_func = GTK_VALUE_POINTER (*arg);
break;
}
}
static void
e_reflow_sorted_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
EReflowSorted *e_reflow_sorted;
e_reflow_sorted = E_REFLOW_SORTED (object);
switch (arg_id) {
case ARG_COMPARE_FUNC:
GTK_VALUE_POINTER (*arg) = e_reflow_sorted->compare_func;
break;
case ARG_STRING_FUNC:
GTK_VALUE_POINTER (*arg) = e_reflow_sorted->string_func;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
static GList *
e_reflow_sorted_get_list(EReflowSorted *e_reflow_sorted, const gchar *id)
{
if (e_reflow_sorted->string_func) {
EReflow *reflow = E_REFLOW(e_reflow_sorted);
GList *list;
for (list = reflow->items; list; list = g_list_next(list)) {
GnomeCanvasItem *item = list->data;
char *string = e_reflow_sorted->string_func (item);
if (string && !strcmp(string, id)) {
return list;
}
}
}
return NULL;
}
void
e_reflow_sorted_remove_item(EReflowSorted *e_reflow_sorted, const gchar *id)
{
GList *list;
GnomeCanvasItem *item = NULL;
list = e_reflow_sorted_get_list(e_reflow_sorted, id);
if (list)
item = list->data;
if (item) {
EReflow *reflow = E_REFLOW(e_reflow_sorted);
reflow->items = g_list_remove_link(reflow->items, list);
g_list_free_1(list);
gtk_object_unref(GTK_OBJECT(item));
gtk_object_destroy(GTK_OBJECT(item));
if ( GTK_OBJECT_FLAGS( e_reflow_sorted ) & GNOME_CANVAS_ITEM_REALIZED ) {
e_canvas_item_request_reflow(GNOME_CANVAS_ITEM(e_reflow_sorted));
e_reflow_post_add_item(E_REFLOW(e_reflow_sorted), NULL);
}
}
}
void
e_reflow_sorted_replace_item(EReflowSorted *e_reflow_sorted, GnomeCanvasItem *item)
{
if (e_reflow_sorted->string_func) {
char *string = e_reflow_sorted->string_func (item);
e_reflow_sorted_remove_item(e_reflow_sorted, string);
e_reflow_sorted_add_item(E_REFLOW(e_reflow_sorted), item);
}
}
GnomeCanvasItem *
e_reflow_sorted_get_item(EReflowSorted *e_reflow_sorted, const gchar *id)
{
GList *list;
list = e_reflow_sorted_get_list(e_reflow_sorted, id);
if (list)
return list->data;
else
return NULL;
}
void
e_reflow_sorted_reorder_item(EReflowSorted *e_reflow_sorted, const gchar *id)
{
GList *list;
GnomeCanvasItem *item = NULL;
list = e_reflow_sorted_get_list(e_reflow_sorted, id);
if (list)
item = list->data;
if (item) {
EReflow *reflow = E_REFLOW(e_reflow_sorted);
reflow->items = g_list_remove_link(reflow->items, list);
gtk_object_unref(GTK_OBJECT(item));
g_list_free_1(list);
e_reflow_sorted_add_item(reflow, item);
e_canvas_item_request_reflow(GNOME_CANVAS_ITEM(e_reflow_sorted));
}
}
static void
e_reflow_sorted_add_item(EReflow *reflow, GnomeCanvasItem *item)
{
EReflowSorted *e_reflow_sorted = E_REFLOW_SORTED(reflow);
if ( e_reflow_sorted->compare_func ) {
reflow->items = g_list_insert_sorted(reflow->items, item, e_reflow_sorted->compare_func);
gtk_object_ref(GTK_OBJECT(item));
if ( GTK_OBJECT_FLAGS( e_reflow_sorted ) & GNOME_CANVAS_ITEM_REALIZED ) {
gnome_canvas_item_set(item,
"width", (double) reflow->column_width,
NULL);
e_canvas_item_request_reflow(GNOME_CANVAS_ITEM(e_reflow_sorted));
}
}
e_reflow_post_add_item(reflow, item);
}
void e_reflow_sorted_jump (EReflowSorted *sorted,
GCompareFunc compare_func,
void *value)
{
int columns = 0;
EReflow *reflow = E_REFLOW(sorted);
GList *list;
GtkAdjustment *adjustment;
for (list = reflow->columns; list; list = g_list_next(list)) {
if (compare_func(((GList *)list->data)->data, value) >= 0) {
GList *last = list->prev;
if (last) {
GList *walk;
for (walk = last->data; walk != list->data; walk = g_list_next(walk)) {
if (compare_func(walk->data, value) >= 0) {
columns --;
break;
}
}
}
adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(GNOME_CANVAS_ITEM(sorted)->canvas));
gtk_adjustment_set_value(adjustment, (reflow->column_width + E_REFLOW_FULL_GUTTER) * columns);
return;
}
columns ++;
}
columns --;
adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(GNOME_CANVAS_ITEM(sorted)->canvas));
gtk_adjustment_set_value(adjustment, (reflow->column_width + E_REFLOW_FULL_GUTTER) * columns);
}
