/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Author :
* Damon Chaplin <damon@helixcode.com>
*
* Copyright 2000, 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
*/
/*
* ECalendar - displays a table of monthly calendars, allowing highlighting
* and selection of one or more days. Like GtkCalendar with more features.
* Most of the functionality is in the ECalendarItem canvas item, though
* we also add GnomeCanvasWidget buttons to go to the previous/next month and
* to got to the current day.
*/
#include <config.h>
#include <e-util/e-util.h>
#include "e-calendar.h"
#define E_CALENDAR_SMALL_FONT \
"-adobe-utopia-regular-r-normal-*-*-100-*-*-p-*-iso8859-*"
#define E_CALENDAR_SMALL_FONT_FALLBACK \
"-adobe-helvetica-medium-r-normal-*-*-80-*-*-p-*-iso8859-*"
/* The space between the arrow buttons and the edge of the widget. */
#define E_CALENDAR_ARROW_BUTTON_X_PAD 2
#define E_CALENDAR_ARROW_BUTTON_Y_PAD 0
/* Vertical padding. The padding above the button includes the space for the
horizontal line. */
#define E_CALENDAR_YPAD_ABOVE_LOWER_BUTTONS 4
#define E_CALENDAR_YPAD_BELOW_LOWER_BUTTONS 3
/* Horizontal padding inside & between buttons. */
#define E_CALENDAR_IXPAD_BUTTONS 4
#define E_CALENDAR_XPAD_BUTTONS 8
/* The time between steps when the prev/next buttons is pressed, in 1/1000ths
of a second, and the number of timeouts we skip before we start
automatically moving back/forward. */
#define E_CALENDAR_AUTO_MOVE_TIMEOUT 150
#define E_CALENDAR_AUTO_MOVE_TIMEOUT_DELAY 2
static void e_calendar_class_init (ECalendarClass *class);
static void e_calendar_init (ECalendar *cal);
static void e_calendar_destroy (GtkObject *object);
static void e_calendar_realize (GtkWidget *widget);
static void e_calendar_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void e_calendar_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void e_calendar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void e_calendar_draw (GtkWidget *widget,
GdkRectangle *area);
static gint e_calendar_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gint e_calendar_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static gint e_calendar_key_press (GtkWidget *widget,
GdkEventKey *event);
static gint e_calendar_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void e_calendar_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static void e_calendar_on_prev_pressed (ECalendar *cal);
static void e_calendar_on_prev_released (ECalendar *cal);
static void e_calendar_on_next_pressed (ECalendar *cal);
static void e_calendar_on_next_released (ECalendar *cal);
static void e_calendar_start_auto_move (ECalendar *cal,
gboolean moving_forward);
static gboolean e_calendar_auto_move_handler (gpointer data);
static void e_calendar_stop_auto_move (ECalendar *cal);
static GnomeCanvasClass *parent_class;
static GtkLayoutClass *grandparent_class;
E_MAKE_TYPE (e_calendar, "ECalendar", ECalendar,
e_calendar_class_init, e_calendar_init, E_CANVAS_TYPE)
static void
e_calendar_class_init (ECalendarClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
parent_class = gtk_type_class (E_CANVAS_TYPE);
grandparent_class = gtk_type_class (GTK_TYPE_LAYOUT);
object_class->destroy = e_calendar_destroy;
widget_class->realize = e_calendar_realize;
widget_class->style_set = e_calendar_style_set;
widget_class->size_request = e_calendar_size_request;
widget_class->size_allocate = e_calendar_size_allocate;
widget_class->draw = e_calendar_draw;
widget_class->focus_in_event = e_calendar_focus_in;
widget_class->focus_out_event = e_calendar_focus_out;
widget_class->key_press_event = e_calendar_key_press;
widget_class->drag_motion = e_calendar_drag_motion;
widget_class->drag_leave = e_calendar_drag_leave;
}
static void
e_calendar_init (ECalendar *cal)
{
GnomeCanvasGroup *canvas_group;
GdkFont *small_font;
GtkWidget *button, *arrow;
/* Create the small font. */
small_font = gdk_font_load (E_CALENDAR_SMALL_FONT);
if (!small_font)
small_font = gdk_font_load (E_CALENDAR_SMALL_FONT_FALLBACK);
if (!small_font)
g_warning ("Couldn't load font");
canvas_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (cal)->root);
cal->calitem = E_CALENDAR_ITEM (gnome_canvas_item_new (canvas_group,
e_calendar_item_get_type (),
"week_number_font", small_font,
NULL));
if (small_font)
gdk_font_unref (small_font);
/* Create the 'Today' and 'None' buttons but don't show them. */
cal->today_button = gtk_button_new_with_label (_("Today"));
cal->today_button_item = gnome_canvas_item_new (canvas_group,
gnome_canvas_widget_get_type (),
"widget", cal->today_button,
NULL);
gnome_canvas_item_hide (cal->today_button_item);
cal->none_button = gtk_button_new_with_label (_("None"));
cal->none_button_item = gnome_canvas_item_new (canvas_group,
gnome_canvas_widget_get_type (),
"widget", cal->none_button,
NULL);
gnome_canvas_item_hide (cal->none_button_item);
/* Create the arrow buttons to move to the previous/next month. */
button = gtk_button_new ();
/* FIXME: The buttons doesn't display properly if we do this. */
/*gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);*/
gtk_widget_show (button);
gtk_signal_connect_object (GTK_OBJECT (button), "pressed",
GTK_SIGNAL_FUNC (e_calendar_on_prev_pressed),
GTK_OBJECT (cal));
gtk_signal_connect_object (GTK_OBJECT (button), "released",
GTK_SIGNAL_FUNC (e_calendar_on_prev_released),
GTK_OBJECT (cal));
arrow = gtk_arrow_new (GTK_ARROW_LEFT, GTK_SHADOW_OUT);
gtk_widget_show (arrow);
gtk_container_add (GTK_CONTAINER (button), arrow);
cal->prev_item = gnome_canvas_item_new (canvas_group,
gnome_canvas_widget_get_type (),
"widget", button,
NULL);
button = gtk_button_new ();
/*gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);*/
gtk_widget_show (button);
gtk_signal_connect_object (GTK_OBJECT (button), "pressed",
GTK_SIGNAL_FUNC (e_calendar_on_next_pressed),
GTK_OBJECT (cal));
gtk_signal_connect_object (GTK_OBJECT (button), "released",
GTK_SIGNAL_FUNC (e_calendar_on_next_released),
GTK_OBJECT (cal));
arrow = gtk_arrow_new (GTK_ARROW_RIGHT, GTK_SHADOW_OUT);
gtk_widget_show (arrow);
gtk_container_add (GTK_CONTAINER (button), arrow);
cal->next_item = gnome_canvas_item_new (canvas_group,
gnome_canvas_widget_get_type (),
"widget", button,
NULL);
cal->min_rows = 1;
cal->min_cols = 1;
cal->max_rows = -1;
cal->max_cols = -1;
cal->timeout_id = 0;
}
/**
* e_calendar_new:
* @Returns: a new #ECalendar.
*
* Creates a new #ECalendar.
**/
GtkWidget *
e_calendar_new (void)
{
GtkWidget *cal;
cal = gtk_type_new (e_calendar_get_type ());
return cal;
}
static void
e_calendar_destroy (GtkObject *object)
{
ECalendar *cal;
g_return_if_fail (object != NULL);
g_return_if_fail (E_IS_CALENDAR (object));
cal = E_CALENDAR (object);
if (cal->timeout_id != 0) {
gtk_timeout_remove (cal->timeout_id);
cal->timeout_id = 0;
}
}
static void
e_calendar_realize (GtkWidget *widget)
{
(*GTK_WIDGET_CLASS (parent_class)->realize) (widget);
}
static void
e_calendar_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
if (GTK_WIDGET_CLASS (parent_class)->style_set)
(*GTK_WIDGET_CLASS (parent_class)->style_set) (widget,
previous_style);
}
static void
e_calendar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
ECalendar *cal;
GtkStyle *style;
gint col_width, row_height, width, height;
gboolean today_button_shown, none_button_shown;
gint buttons_shown = 0, button_height, button_width, buttons_width;
GtkRequisition today_button_requisition = { 0 };
GtkRequisition none_button_requisition = { 0 };
gint today_button_width = 0, today_button_height = 0;
gint none_button_width = 0, none_button_height = 0;
cal = E_CALENDAR (widget);
style = GTK_WIDGET (cal)->style;
gtk_object_get (GTK_OBJECT (cal->calitem),
"row_height", &row_height,
"column_width", &col_width,
NULL);
height = row_height * cal->min_rows;
width = col_width * cal->min_cols;
/* Add on space for line & button if shown. */
today_button_shown = GTK_WIDGET_VISIBLE (cal->today_button);
none_button_shown = GTK_WIDGET_VISIBLE (cal->none_button);
if (today_button_shown || none_button_shown) {
/* Note that we use the buttons' requisition fields directly
since we want the sizes without any usize modification. */
if (today_button_shown) {
gtk_widget_size_request (cal->today_button,
&today_button_requisition);
today_button_width = cal->today_button->requisition.width;
today_button_height = cal->today_button->requisition.height;
buttons_shown++;
}
if (none_button_shown) {
gtk_widget_size_request (cal->none_button,
&none_button_requisition);
none_button_width = cal->none_button->requisition.width;
none_button_height = cal->none_button->requisition.height;
buttons_shown++;
}
button_height = MAX (today_button_height, none_button_height);
height += E_CALENDAR_YPAD_ABOVE_LOWER_BUTTONS + button_height
+ E_CALENDAR_YPAD_BELOW_LOWER_BUTTONS;
button_width = MAX (today_button_width, none_button_width);
button_width += E_CALENDAR_IXPAD_BUTTONS;
buttons_width = buttons_shown * button_width
+ (buttons_shown - 1) * E_CALENDAR_XPAD_BUTTONS;
width = MAX (width, buttons_width);
}
requisition->width = width + style->klass->xthickness * 2;
requisition->height = height + style->klass->ythickness * 2;
}
static void
e_calendar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
ECalendar *cal;
GdkFont *font;
gdouble old_x2, old_y2, new_x2, new_y2;
gdouble buttons_x1, buttons_y1;
gdouble button_width, button_height;
gdouble buttons_width = 0, buttons_height = 0;
gdouble xthickness, ythickness, arrow_button_size;
gboolean today_button_shown, none_button_shown;
gint buttons_shown = 0;
GtkRequisition today_button_requisition = { 0 };
GtkRequisition none_button_requisition = { 0 };
gint today_button_width = 0, today_button_height = 0;
gint none_button_width = 0, none_button_height = 0;
cal = E_CALENDAR (widget);
font = widget->style->font;
xthickness = widget->style->klass->xthickness;
ythickness = widget->style->klass->ythickness;
(*GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
/* Set the scroll region to its allocated size, if changed. */
gnome_canvas_get_scroll_region (GNOME_CANVAS (cal),
NULL, NULL, &old_x2, &old_y2);
new_x2 = widget->allocation.width - 1;
new_y2 = widget->allocation.height - 1;
if (old_x2 != new_x2 || old_y2 != new_y2)
gnome_canvas_set_scroll_region (GNOME_CANVAS (cal),
0, 0, new_x2, new_y2);
/* Set the positions of the Today & None buttons if shown. */
today_button_shown = GTK_WIDGET_VISIBLE (cal->today_button);
none_button_shown = GTK_WIDGET_VISIBLE (cal->none_button);
if (today_button_shown || none_button_shown) {
if (today_button_shown) {
gtk_widget_size_request (cal->today_button,
&today_button_requisition);
today_button_width = cal->today_button->requisition.width;
today_button_height = cal->today_button->requisition.height;
buttons_shown++;
}
if (none_button_shown) {
gtk_widget_size_request (cal->none_button,
&none_button_requisition);
none_button_width = cal->none_button->requisition.width;
none_button_height = cal->none_button->requisition.height;
buttons_shown++;
}
button_height = MAX (today_button_height, none_button_height);
buttons_height = E_CALENDAR_YPAD_ABOVE_LOWER_BUTTONS
+ button_height + E_CALENDAR_YPAD_BELOW_LOWER_BUTTONS;
button_width = MAX (today_button_width, none_button_width);
button_width += E_CALENDAR_IXPAD_BUTTONS;
buttons_width = buttons_shown * button_width
+ (buttons_shown - 1) * E_CALENDAR_XPAD_BUTTONS;
buttons_x1 = (new_x2 + 1 - buttons_width) / 2;
buttons_x1 = MAX (0, buttons_x1);
buttons_y1 = new_y2 + 1 - E_CALENDAR_YPAD_BELOW_LOWER_BUTTONS
- button_height - ythickness;
buttons_y1 = MAX (0, buttons_y1);
gnome_canvas_item_set (cal->today_button_item,
"x", buttons_x1,
"y", buttons_y1,
"width", (gdouble) button_width,
"height", (gdouble) button_height,
NULL);
if (today_button_shown)
buttons_x1 += button_width + E_CALENDAR_XPAD_BUTTONS;
gnome_canvas_item_set (cal->none_button_item,
"x", buttons_x1,
"y", buttons_y1,
"width", (gdouble) button_width,
"height", (gdouble) button_height,
NULL);
}
/* Take off space for line & buttons if shown. */
gnome_canvas_item_set (GNOME_CANVAS_ITEM (cal->calitem),
"x1", 0.0,
"y1", 0.0,
"x2", new_x2,
"y2", new_y2,
"buttons_space", buttons_height,
NULL);
/* Position the arrow buttons. */
arrow_button_size = font->ascent + font->descent
+ E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME
+ E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME
- E_CALENDAR_ARROW_BUTTON_Y_PAD * 2;
gnome_canvas_item_set (cal->prev_item,
"x", xthickness * 2
+ E_CALENDAR_ARROW_BUTTON_X_PAD,
"y", ythickness * 2
+ E_CALENDAR_ARROW_BUTTON_Y_PAD,
"width", arrow_button_size,
"height", arrow_button_size,
NULL);
gnome_canvas_item_set (cal->next_item,
"x", new_x2 + 1 - xthickness * 2
- E_CALENDAR_ARROW_BUTTON_X_PAD
- arrow_button_size,
"y", ythickness * 2
+ E_CALENDAR_ARROW_BUTTON_Y_PAD,
"width", arrow_button_size,
"height", arrow_button_size,
NULL);
}
static void
e_calendar_draw (GtkWidget *widget,
GdkRectangle *area)
{
ECalendar *cal;
cal = E_CALENDAR (widget);
(*GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
/* GnomeCanvas bug workaround to draw the GnomeCanvasWidgets. */
#if 0
(*GTK_WIDGET_CLASS (grandparent_class)->draw) (widget, area);
#endif
}
static gint
e_calendar_focus_in (GtkWidget *widget,
GdkEventFocus *event)
{
return FALSE;
}
static gint
e_calendar_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
return FALSE;
}
static gint
e_calendar_key_press (GtkWidget *widget,
GdkEventKey *event)
{
return FALSE;
}
void
e_calendar_set_minimum_size (ECalendar *cal,
gint rows,
gint cols)
{
g_return_if_fail (E_IS_CALENDAR (cal));
cal->min_rows = rows;
cal->min_cols = cols;
gnome_canvas_item_set (GNOME_CANVAS_ITEM (cal->calitem),
"minimum_rows", rows,
"minimum_columns", cols,
NULL);
gtk_widget_queue_resize (GTK_WIDGET (cal));
}
void
e_calendar_set_maximum_size (ECalendar *cal,
gint rows,
gint cols)
{
g_return_if_fail (E_IS_CALENDAR (cal));
cal->max_rows = rows;
cal->max_cols = cols;
gnome_canvas_item_set (GNOME_CANVAS_ITEM (cal->calitem),
"maximum_rows", rows,
"maximum_columns", cols,
NULL);
gtk_widget_queue_resize (GTK_WIDGET (cal));
}
/* Returns the border size on each side of the month displays. */
void
e_calendar_get_border_size (ECalendar *cal,
gint *top,
gint *bottom,
gint *left,
gint *right)
{
GtkStyle *style;
g_return_if_fail (E_IS_CALENDAR (cal));
style = GTK_WIDGET (cal)->style;
if (style) {
*top = style->klass->ythickness;
*bottom = style->klass->ythickness
+ cal->calitem->buttons_space;
*left = style->klass->xthickness;
*right = style->klass->xthickness;
} else {
*top = *bottom = *left = *right = 0;
}
}
static void
e_calendar_on_prev_pressed (ECalendar *cal)
{
e_calendar_start_auto_move (cal, FALSE);
}
static void
e_calendar_on_next_pressed (ECalendar *cal)
{
e_calendar_start_auto_move (cal, TRUE);
}
static void
e_calendar_start_auto_move (ECalendar *cal,
gboolean moving_forward)
{
ECalendarItem *calitem;
gint offset;
if (cal->timeout_id == 0) {
cal->timeout_id = g_timeout_add (E_CALENDAR_AUTO_MOVE_TIMEOUT,
e_calendar_auto_move_handler,
cal);
}
cal->timeout_delay = E_CALENDAR_AUTO_MOVE_TIMEOUT_DELAY;
cal->moving_forward = moving_forward;
calitem = cal->calitem;
offset = cal->moving_forward ? 1 : -1;
e_calendar_item_set_first_month (calitem, calitem->year,
calitem->month + offset);
}
static gboolean
e_calendar_auto_move_handler (gpointer data)
{
ECalendar *cal;
ECalendarItem *calitem;
gint offset;
g_return_val_if_fail (E_IS_CALENDAR (data), FALSE);
cal = E_CALENDAR (data);
calitem = cal->calitem;
GDK_THREADS_ENTER ();
if (cal->timeout_delay > 0) {
cal->timeout_delay--;
} else {
offset = cal->moving_forward ? 1 : -1;
e_calendar_item_set_first_month (calitem, calitem->year,
calitem->month + offset);
}
GDK_THREADS_LEAVE ();
return TRUE;
}
static void
e_calendar_on_prev_released (ECalendar *cal)
{
e_calendar_stop_auto_move (cal);
}
static void
e_calendar_on_next_released (ECalendar *cal)
{
e_calendar_stop_auto_move (cal);
}
static void
e_calendar_stop_auto_move (ECalendar *cal)
{
if (cal->timeout_id != 0) {
gtk_timeout_remove (cal->timeout_id);
cal->timeout_id = 0;
}
}
/* Set which, if any, of the buttons to show beneath the month displays.
You must connect to the button's clicked signal and perform the
required action yourself. */
void
e_calendar_set_buttons (ECalendar *cal,
gboolean show_today_button,
gboolean show_none_button)
{
if (show_today_button) {
gtk_widget_show (cal->today_button);
gnome_canvas_item_show (cal->today_button_item);
} else {
gtk_widget_hide (cal->today_button);
gnome_canvas_item_hide (cal->today_button_item);
}
if (show_none_button) {
gtk_widget_show (cal->none_button);
gnome_canvas_item_show (cal->none_button_item);
} else {
gtk_widget_hide (cal->none_button);
gnome_canvas_item_hide (cal->none_button_item);
}
}
static gint
e_calendar_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
ECalendar *cal;
g_return_val_if_fail (E_IS_CALENDAR (widget), FALSE);
cal = E_CALENDAR (widget);
#if 0
g_print ("In e_calendar_drag_motion\n");
#endif
return FALSE;
}
static void
e_calendar_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
ECalendar *cal;
g_return_if_fail (E_IS_CALENDAR (widget));
cal = E_CALENDAR (widget);
#if 0
g_print ("In e_calendar_drag_leave\n");
#endif
}
