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-rw-r--r--widgets/misc/e-calendar.c481
1 files changed, 481 insertions, 0 deletions
diff --git a/widgets/misc/e-calendar.c b/widgets/misc/e-calendar.c
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+/* -*- 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-*"
+
+#define E_CALENDAR_BUTTON_X_PAD 2
+#define E_CALENDAR_BUTTON_Y_PAD 0
+
+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 gint e_calendar_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+static void e_calendar_draw (GtkWidget *widget,
+ GdkRectangle *area);
+static gint e_calendar_button_press (GtkWidget *widget,
+ GdkEventButton *event);
+static gint e_calendar_button_release (GtkWidget *widget,
+ GdkEventButton *event);
+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 void e_calendar_paint (ECalendar *cal,
+ GdkRectangle *area);
+
+static void e_calendar_on_prev_clicked (ECalendar *cal);
+static void e_calendar_on_next_clicked (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->expose_event = e_calendar_expose;
+ widget_class->draw = e_calendar_draw;
+#if 0
+ widget_class->button_press_event = e_calendar_button_press;
+ widget_class->button_release_event = e_calendar_button_release;
+#endif
+ 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;
+}
+
+
+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,
+ "week_start_day", 6,
+ NULL));
+
+#if 0
+ "show_week_numbers", TRUE,
+ "minimum_columns", 5,
+ "maximum_columns", 5,
+#endif
+
+ if (small_font)
+ gdk_font_unref (small_font);
+
+
+ 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), "clicked",
+ GTK_SIGNAL_FUNC (e_calendar_on_prev_clicked),
+ 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), "clicked",
+ GTK_SIGNAL_FUNC (e_calendar_on_next_clicked),
+ 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;
+}
+
+
+/**
+ * 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);
+
+
+
+}
+
+
+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)
+{
+}
+
+
+static void
+e_calendar_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ ECalendar *cal;
+ GtkStyle *style;
+ gdouble col_width, row_height;
+ gint width, height;
+
+ 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;
+
+ /* FIXME: Add on space for line & button if shown. */
+
+ 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 xthickness, ythickness, button_size;
+
+ 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);
+
+ /* FIXME: 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,
+ NULL);
+
+ button_size = font->ascent + font->descent + E_CALENDAR_ITEM_YPAD1
+ + E_CALENDAR_ITEM_YPAD2 - E_CALENDAR_BUTTON_Y_PAD * 2;
+
+ gnome_canvas_item_set (cal->prev_item,
+ "x", xthickness * 2 + E_CALENDAR_BUTTON_X_PAD,
+ "y", ythickness * 2 + E_CALENDAR_BUTTON_Y_PAD,
+ "width", button_size,
+ "height", button_size,
+ NULL);
+
+ gnome_canvas_item_set (cal->next_item,
+ "x", new_x2 + 1 - xthickness * 2
+ - E_CALENDAR_BUTTON_X_PAD - button_size,
+ "y", ythickness * 2 + E_CALENDAR_BUTTON_Y_PAD,
+ "width", button_size,
+ "height", button_size,
+ NULL);
+}
+
+
+static gint
+e_calendar_expose (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ ECalendar *cal;
+
+ cal = E_CALENDAR (widget);
+
+ (*GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
+
+ e_calendar_paint (cal, &event->area);
+
+ return FALSE;
+}
+
+
+static void
+e_calendar_draw (GtkWidget *widget,
+ GdkRectangle *area)
+{
+ ECalendar *cal;
+
+ cal = E_CALENDAR (widget);
+
+ (*GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
+
+ (*GTK_WIDGET_CLASS (grandparent_class)->draw) (widget, area);
+
+ e_calendar_paint (cal, area);
+}
+
+
+static void
+e_calendar_paint (ECalendar *cal,
+ GdkRectangle *area)
+{
+#if 0
+ g_print ("In e_calendar_paint: %i,%i %ix%i\n", area->x, area->y,
+ area->width, area->height);
+#endif
+}
+
+
+
+static gint
+e_calendar_button_press (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ ECalendar *cal;
+
+ cal = E_CALENDAR (widget);
+
+ g_print ("In e_calendar_button_press\n");
+
+ return FALSE;
+}
+
+
+static gint
+e_calendar_button_release (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ g_print ("In e_calendar_button_release\n");
+
+ return FALSE;
+}
+
+
+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));
+}
+
+
+static void
+e_calendar_on_prev_clicked (ECalendar *cal)
+{
+ gint year, month;
+
+ gtk_object_get (GTK_OBJECT (cal->calitem),
+ "year", &year,
+ "month", &month,
+ NULL);
+
+ month--;
+ if (month == -1) {
+ year--;
+ month = 11;
+ }
+
+ gnome_canvas_item_set (GNOME_CANVAS_ITEM (cal->calitem),
+ "year", year,
+ "month", month,
+ NULL);
+}
+
+
+static void
+e_calendar_on_next_clicked (ECalendar *cal)
+{
+ gint year, month;
+
+ gtk_object_get (GTK_OBJECT (cal->calitem),
+ "year", &year,
+ "month", &month,
+ NULL);
+
+ month++;
+ if (month == 12) {
+ year++;
+ month = 0;
+ }
+
+ gnome_canvas_item_set (GNOME_CANVAS_ITEM (cal->calitem),
+ "year", year,
+ "month", month,
+ NULL);
+}
+