/*
* 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:
* Chris Lahey <clahey@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <gtk/gtk.h>
#include <libgnomecanvas/libgnomecanvas.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <glib/gi18n.h>
#include "e-util/e-util.h"
#include "e-util/e-xml-utils.h"
#include "misc/e-canvas.h"
#include "e-table-col-dnd.h"
#include "e-table-defines.h"
#include "e-table-field-chooser-item.h"
#include "e-table-header-utils.h"
#include "e-table-header.h"
#define d(x)
#if 0
enum {
BUTTON_PRESSED,
LAST_SIGNAL
};
static guint etfci_signals[LAST_SIGNAL] = { 0, };
#endif
/* workaround for avoiding API breakage */
#define etfci_get_type e_table_field_chooser_item_get_type
G_DEFINE_TYPE (ETableFieldChooserItem, etfci, GNOME_TYPE_CANVAS_ITEM)
static void etfci_drop_table_header (ETableFieldChooserItem *etfci);
static void etfci_drop_full_header (ETableFieldChooserItem *etfci);
enum {
PROP_0,
PROP_FULL_HEADER,
PROP_HEADER,
PROP_DND_CODE,
PROP_WIDTH,
PROP_HEIGHT
};
static void
etfci_dispose (GObject *object)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (object);
etfci_drop_table_header (etfci);
etfci_drop_full_header (etfci);
if (etfci->combined_header)
g_object_unref (etfci->combined_header);
etfci->combined_header = NULL;
if (etfci->font_desc)
pango_font_description_free (etfci->font_desc);
etfci->font_desc = NULL;
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (etfci_parent_class)->dispose (object);
}
static gint
etfci_find_button (ETableFieldChooserItem *etfci,
gdouble loc)
{
gint i;
gint count;
gdouble height = 0;
count = e_table_header_count (etfci->combined_header);
for (i = 0; i < count; i++) {
ETableCol *ecol;
ecol = e_table_header_get_column (etfci->combined_header, i);
if (ecol->disabled)
continue;
height += e_table_header_compute_height (
ecol, GTK_WIDGET (GNOME_CANVAS_ITEM (etfci)->canvas));
if (height > loc)
return i;
}
return MAX (0, count - 1);
}
static void
etfci_rebuild_combined (ETableFieldChooserItem *etfci)
{
gint count;
GHashTable *hash;
gint i;
if (etfci->combined_header != NULL)
g_object_unref (etfci->combined_header);
etfci->combined_header = e_table_header_new ();
hash = g_hash_table_new (NULL, NULL);
count = e_table_header_count (etfci->header);
for (i = 0; i < count; i++) {
ETableCol *ecol = e_table_header_get_column (etfci->header, i);
if (ecol->disabled)
continue;
g_hash_table_insert (
hash, GINT_TO_POINTER (ecol->col_idx),
GINT_TO_POINTER (1));
}
count = e_table_header_count (etfci->full_header);
for (i = 0; i < count; i++) {
ETableCol *ecol = e_table_header_get_column (etfci->full_header, i);
if (ecol->disabled)
continue;
if (!(GPOINTER_TO_INT (g_hash_table_lookup (
hash, GINT_TO_POINTER (ecol->col_idx)))))
e_table_header_add_column (etfci->combined_header, ecol, -1);
}
g_hash_table_destroy (hash);
}
static void
etfci_reflow (GnomeCanvasItem *item,
gint flags)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
gdouble old_height;
gint i;
gint count;
gdouble height = 0;
etfci_rebuild_combined (etfci);
old_height = etfci->height;
count = e_table_header_count (etfci->combined_header);
for (i = 0; i < count; i++) {
ETableCol *ecol;
ecol = e_table_header_get_column (etfci->combined_header, i);
if (ecol->disabled)
continue;
height += e_table_header_compute_height (
ecol, GTK_WIDGET (GNOME_CANVAS_ITEM (etfci)->canvas));
}
etfci->height = height;
if (old_height != etfci->height)
e_canvas_item_request_parent_reflow (item);
gnome_canvas_item_request_update (item);
}
static void
etfci_update (GnomeCanvasItem *item,
const cairo_matrix_t *i2c,
gint flags)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
gdouble x1, y1, x2, y2;
if (GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->update)
GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->update (
item, i2c, flags);
x1 = y1 = 0;
x2 = etfci->width;
y2 = etfci->height;
gnome_canvas_matrix_transform_rect (i2c, &x1, &y1, &x2, &y2);
if (item->x1 != x1 ||
item->y1 != y1 ||
item->x2 != x2 ||
item->y2 != y2)
{
gnome_canvas_request_redraw (
item->canvas, item->x1,
item->y1, item->x2, item->y2);
item->x1 = x1;
item->y1 = y1;
item->x2 = x2;
item->y2 = y2;
/* FIXME: Group Child bounds !? */
#if 0
gnome_canvas_group_child_bounds (
GNOME_CANVAS_GROUP (item->parent), item);
#endif
}
gnome_canvas_request_redraw (
item->canvas, item->x1, item->y1, item->x2, item->y2);
}
static void
etfci_font_load (ETableFieldChooserItem *etfci)
{
GtkWidget *widget;
GtkStyle *style;
if (etfci->font_desc)
pango_font_description_free (etfci->font_desc);
widget = GTK_WIDGET (GNOME_CANVAS_ITEM (etfci)->canvas);
style = gtk_widget_get_style (widget);
etfci->font_desc = pango_font_description_copy (style->font_desc);
}
static void
etfci_drop_full_header (ETableFieldChooserItem *etfci)
{
GObject *header;
if (!etfci->full_header)
return;
header = G_OBJECT (etfci->full_header);
if (etfci->full_header_structure_change_id)
g_signal_handler_disconnect (
header, etfci->full_header_structure_change_id);
if (etfci->full_header_dimension_change_id)
g_signal_handler_disconnect (
header, etfci->full_header_dimension_change_id);
etfci->full_header_structure_change_id = 0;
etfci->full_header_dimension_change_id = 0;
if (header)
g_object_unref (header);
etfci->full_header = NULL;
etfci->height = 0;
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
full_header_structure_changed (ETableHeader *header,
ETableFieldChooserItem *etfci)
{
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
full_header_dimension_changed (ETableHeader *header,
gint col,
ETableFieldChooserItem *etfci)
{
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
etfci_add_full_header (ETableFieldChooserItem *etfci,
ETableHeader *header)
{
etfci->full_header = header;
g_object_ref (etfci->full_header);
etfci->full_header_structure_change_id = g_signal_connect (
header, "structure_change",
G_CALLBACK (full_header_structure_changed), etfci);
etfci->full_header_dimension_change_id = g_signal_connect (
header, "dimension_change",
G_CALLBACK (full_header_dimension_changed), etfci);
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
etfci_drop_table_header (ETableFieldChooserItem *etfci)
{
GObject *header;
if (!etfci->header)
return;
header = G_OBJECT (etfci->header);
if (etfci->table_header_structure_change_id)
g_signal_handler_disconnect (header, etfci->table_header_structure_change_id);
if (etfci->table_header_dimension_change_id)
g_signal_handler_disconnect (header, etfci->table_header_dimension_change_id);
etfci->table_header_structure_change_id = 0;
etfci->table_header_dimension_change_id = 0;
if (header)
g_object_unref (header);
etfci->header = NULL;
etfci->height = 0;
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
table_header_structure_changed (ETableHeader *header,
ETableFieldChooserItem *etfci)
{
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
table_header_dimension_changed (ETableHeader *header,
gint col,
ETableFieldChooserItem *etfci)
{
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
etfci_add_table_header (ETableFieldChooserItem *etfci,
ETableHeader *header)
{
etfci->header = header;
g_object_ref (etfci->header);
etfci->table_header_structure_change_id = g_signal_connect (
header, "structure_change",
G_CALLBACK (table_header_structure_changed), etfci);
etfci->table_header_dimension_change_id = g_signal_connect (
header, "dimension_change",
G_CALLBACK (table_header_dimension_changed), etfci);
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
etfci_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GnomeCanvasItem *item;
ETableFieldChooserItem *etfci;
item = GNOME_CANVAS_ITEM (object);
etfci = E_TABLE_FIELD_CHOOSER_ITEM (object);
switch (property_id) {
case PROP_FULL_HEADER:
etfci_drop_full_header (etfci);
if (g_value_get_object (value))
etfci_add_full_header (
etfci, E_TABLE_HEADER (
g_value_get_object (value)));
break;
case PROP_HEADER:
etfci_drop_table_header (etfci);
if (g_value_get_object (value))
etfci_add_table_header (
etfci, E_TABLE_HEADER (
g_value_get_object (value)));
break;
case PROP_DND_CODE:
g_free (etfci->dnd_code);
etfci->dnd_code = g_strdup (g_value_get_string (value));
break;
case PROP_WIDTH:
etfci->width = g_value_get_double (value);
gnome_canvas_item_request_update (item);
break;
}
}
static void
etfci_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
ETableFieldChooserItem *etfci;
etfci = E_TABLE_FIELD_CHOOSER_ITEM (object);
switch (property_id) {
case PROP_DND_CODE:
g_value_set_string (value, etfci->dnd_code);
break;
case PROP_WIDTH:
g_value_set_double (value, etfci->width);
break;
case PROP_HEIGHT:
g_value_set_double (value, etfci->height);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
etfci_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
ETableFieldChooserItem *etfci)
{
if (etfci->drag_col != -1) {
gchar *string = g_strdup_printf("%d", etfci->drag_col);
gtk_selection_data_set (selection_data,
GDK_SELECTION_TYPE_STRING,
sizeof (string[0]),
(guchar *) string,
strlen (string));
g_free (string);
}
}
static void
etfci_drag_end (GtkWidget *canvas,
GdkDragContext *context,
ETableFieldChooserItem *etfci)
{
etfci->drag_col = -1;
}
static void
etfci_realize (GnomeCanvasItem *item)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
if (GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)-> realize)
(*GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->realize)(item);
if (!etfci->font_desc)
etfci_font_load (etfci);
etfci->drag_end_id = g_signal_connect (
item->canvas, "drag_end",
G_CALLBACK (etfci_drag_end), etfci);
etfci->drag_data_get_id = g_signal_connect (
item->canvas, "drag_data_get",
G_CALLBACK (etfci_drag_data_get), etfci);
e_canvas_item_request_reflow (GNOME_CANVAS_ITEM (etfci));
}
static void
etfci_unrealize (GnomeCanvasItem *item)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
if (etfci->font_desc)
pango_font_description_free (etfci->font_desc);
etfci->font_desc = NULL;
g_signal_handler_disconnect (item->canvas, etfci->drag_end_id);
etfci->drag_end_id = 0;
g_signal_handler_disconnect (item->canvas, etfci->drag_data_get_id);
etfci->drag_data_get_id = 0;
if (GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->unrealize)
(*GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->unrealize)(item);
}
static void
etfci_draw (GnomeCanvasItem *item,
cairo_t *cr,
gint x,
gint y,
gint width,
gint height)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
GnomeCanvas *canvas = item->canvas;
gint rows;
gint y1, y2;
gint row;
if (etfci->combined_header == NULL)
return;
rows = e_table_header_count (etfci->combined_header);
y1 = y2 = 0;
for (row = 0; row < rows; row++, y1 = y2) {
ETableCol *ecol;
ecol = e_table_header_get_column (etfci->combined_header, row);
if (ecol->disabled)
continue;
y2 += e_table_header_compute_height (ecol, GTK_WIDGET (canvas));
if (y1 > (y + height))
break;
if (y2 < y)
continue;
e_table_header_draw_button (cr, ecol,
GTK_WIDGET (canvas),
-x, y1 - y,
width, height,
etfci->width, y2 - y1,
E_TABLE_COL_ARROW_NONE);
cairo_restore (cr);
}
}
static GnomeCanvasItem *
etfci_point (GnomeCanvasItem *item,
gdouble x,
gdouble y,
gint cx,
gint cy)
{
return item;
}
static gboolean
etfci_maybe_start_drag (ETableFieldChooserItem *etfci,
gint x,
gint y)
{
if (!etfci->maybe_drag)
return FALSE;
if (MAX (abs (etfci->click_x - x),
abs (etfci->click_y - y)) <= 3)
return FALSE;
return TRUE;
}
static void
etfci_start_drag (ETableFieldChooserItem *etfci,
GdkEvent *event,
gdouble x,
gdouble y)
{
GtkWidget *widget = GTK_WIDGET (GNOME_CANVAS_ITEM (etfci)->canvas);
GtkTargetList *list;
GdkDragContext *context;
ETableCol *ecol;
cairo_surface_t *cs;
cairo_t *cr;
gint drag_col;
gint button_height;
GtkTargetEntry etfci_drag_types[] = {
{ (gchar *) TARGET_ETABLE_COL_TYPE, 0, TARGET_ETABLE_COL_HEADER },
};
if (etfci->combined_header == NULL)
return;
drag_col = etfci_find_button (etfci, y);
if (drag_col < 0 || drag_col > e_table_header_count (etfci->combined_header))
return;
ecol = e_table_header_get_column (etfci->combined_header, drag_col);
if (ecol->disabled)
return;
etfci->drag_col = ecol->col_idx;
etfci_drag_types[0].target = g_strdup_printf (
"%s-%s", etfci_drag_types[0].target, etfci->dnd_code);
d(g_print ("etfci - %s\n", etfci_drag_types[0].target));
list = gtk_target_list_new (etfci_drag_types, G_N_ELEMENTS (etfci_drag_types));
context = gtk_drag_begin (widget, list, GDK_ACTION_MOVE, 1, event);
g_free ((gpointer) etfci_drag_types[0].target);
button_height = e_table_header_compute_height (ecol, widget);
cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
etfci->width, button_height);
cr = cairo_create (cs);
cr = cairo_create (cs);
e_table_header_draw_button (
cr, ecol,
widget, 0, 0,
etfci->width, button_height,
etfci->width, button_height,
E_TABLE_COL_ARROW_NONE);
gtk_drag_set_icon_surface (context, cs);
cairo_surface_destroy (cs);
cairo_destroy (cr);
etfci->maybe_drag = FALSE;
}
/*
* Handles the events on the ETableFieldChooserItem
*/
static gint
etfci_event (GnomeCanvasItem *item,
GdkEvent *e)
{
ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
GnomeCanvas *canvas = item->canvas;
gint x, y;
switch (e->type) {
case GDK_MOTION_NOTIFY:
gnome_canvas_w2c (canvas, e->motion.x, e->motion.y, &x, &y);
if (etfci_maybe_start_drag (etfci, x, y))
etfci_start_drag (etfci, e, x, y);
break;
case GDK_BUTTON_PRESS:
gnome_canvas_w2c (canvas, e->button.x, e->button.y, &x, &y);
if (e->button.button == 1) {
etfci->click_x = x;
etfci->click_y = y;
etfci->maybe_drag = TRUE;
}
break;
case GDK_BUTTON_RELEASE: {
etfci->maybe_drag = FALSE;
break;
}
default:
return FALSE;
}
return TRUE;
}
static void
etfci_class_init (ETableFieldChooserItemClass *class)
{
GnomeCanvasItemClass *item_class = GNOME_CANVAS_ITEM_CLASS (class);
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->dispose = etfci_dispose;
object_class->set_property = etfci_set_property;
object_class->get_property = etfci_get_property;
item_class->update = etfci_update;
item_class->realize = etfci_realize;
item_class->unrealize = etfci_unrealize;
item_class->draw = etfci_draw;
item_class->point = etfci_point;
item_class->event = etfci_event;
g_object_class_install_property (object_class, PROP_DND_CODE,
g_param_spec_string ("dnd_code",
"DnD code",
NULL,
NULL,
G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_FULL_HEADER,
g_param_spec_object ("full_header",
"Full Header",
NULL,
E_TYPE_TABLE_HEADER,
G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_HEADER,
g_param_spec_object ("header",
"Header",
NULL,
E_TYPE_TABLE_HEADER,
G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_WIDTH,
g_param_spec_double ("width",
"Width",
NULL,
0, G_MAXDOUBLE, 0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_HEIGHT,
g_param_spec_double ("height",
"Height",
NULL,
0, G_MAXDOUBLE, 0,
G_PARAM_READABLE));
}
static void
etfci_init (ETableFieldChooserItem *etfci)
{
etfci->full_header = NULL;
etfci->header = NULL;
etfci->combined_header = NULL;
etfci->height = etfci->width = 0;
etfci->font_desc = NULL;
etfci->full_header_structure_change_id = 0;
etfci->full_header_dimension_change_id = 0;
etfci->table_header_structure_change_id = 0;
etfci->table_header_dimension_change_id = 0;
etfci->dnd_code = NULL;
etfci->maybe_drag = 0;
etfci->drag_end_id = 0;
e_canvas_item_set_reflow_callback (GNOME_CANVAS_ITEM (etfci), etfci_reflow);
}