1 files changed, 691 insertions, 0 deletions

diff --git a/calendar/gui/e-weekday-chooser.c b/calendar/gui/e-weekday-chooser.c
new file mode 100644
index 0000000000..4585699f9c
--- /dev/null
+++ b/calendar/gui/e-weekday-chooser.c
@@ -0,0 +1,691 @@
+/*
+ * e-weekday-chooser.c
+ *
+ * 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/>
+ *
+ */
+
+#include "e-weekday-chooser.h"
+
+#include <config.h>
+#include <string.h>
+
+#include <gtk/gtk.h>
+#include <glib/gi18n-lib.h>
+#include <gdk/gdkkeysyms.h>
+
+#include <libgnomecanvas/libgnomecanvas.h>
+#include <e-util/e-util.h>
+
+#define PADDING 2
+
+#define E_WEEKDAY_CHOOSER_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_WEEKDAY_CHOOSER, EWeekdayChooserPrivate))
+
+/* Private part of the EWeekdayChooser structure */
+struct _EWeekdayChooserPrivate {
+	/* Selected days; see weekday_chooser_set_days() */
+	guint8 day_mask;
+
+	/* Blocked days; these cannot be modified */
+	guint8 blocked_day_mask;
+
+	/* Day that defines the start of the week; 0 = Sunday, ..., 6 = Saturday */
+	gint week_start_day;
+
+	/* Current keyboard focus day */
+	gint focus_day;
+
+	/* Metrics */
+	gint font_ascent, font_descent;
+	gint max_letter_width;
+
+	/* Components */
+	GnomeCanvasItem *boxes[7];
+	GnomeCanvasItem *labels[7];
+};
+
+enum {
+	PROP_0,
+	PROP_WEEK_START_DAY
+};
+
+enum {
+	CHANGED,
+	LAST_SIGNAL
+};
+
+static guint chooser_signals[LAST_SIGNAL];
+
+G_DEFINE_TYPE_WITH_CODE (
+	EWeekdayChooser,
+	e_weekday_chooser,
+	GNOME_TYPE_CANVAS,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_EXTENSIBLE, NULL))
+
+static gchar *
+get_day_text (gint day_index)
+{
+	GDateWeekday weekday;
+
+	/* Convert from tm_wday to GDateWeekday. */
+	weekday = (day_index == 0) ? G_DATE_SUNDAY : day_index;
+
+	return g_strdup (e_get_weekday_name (weekday, TRUE));
+}
+
+static void
+colorize_items (EWeekdayChooser *chooser)
+{
+	EWeekdayChooserPrivate *priv;
+	GdkColor *outline, *focus_outline;
+	GdkColor *fill, *sel_fill;
+	GdkColor *text_fill, *sel_text_fill;
+	GtkStateType state;
+	GtkStyle *style;
+	gint i;
+
+	priv = chooser->priv;
+
+	state = gtk_widget_get_state (GTK_WIDGET (chooser));
+	style = gtk_widget_get_style (GTK_WIDGET (chooser));
+
+	outline = &style->fg[state];
+	focus_outline = &style->bg[state];
+
+	fill = &style->base[state];
+	text_fill = &style->fg[state];
+
+	sel_fill = &style->bg[GTK_STATE_SELECTED];
+	sel_text_fill = &style->fg[GTK_STATE_SELECTED];
+
+	for (i = 0; i < 7; i++) {
+		gint day;
+		GdkColor *f, *t, *o;
+
+		day = i + priv->week_start_day;
+		if (day >= 7)
+			day -= 7;
+
+		if (priv->day_mask & (0x1 << day)) {
+			f = sel_fill;
+			t = sel_text_fill;
+		} else {
+			f = fill;
+			t = text_fill;
+		}
+
+		if (day == priv->focus_day)
+			o = focus_outline;
+		else
+			o = outline;
+
+		gnome_canvas_item_set (
+			priv->boxes[i],
+			"fill_color_gdk", f,
+			"outline_color_gdk", o,
+			NULL);
+
+		gnome_canvas_item_set (
+			priv->labels[i],
+			"fill_color_gdk", t,
+			NULL);
+	}
+}
+
+static void
+configure_items (EWeekdayChooser *chooser)
+{
+	EWeekdayChooserPrivate *priv;
+	GtkAllocation allocation;
+	gint width, height;
+	gint box_width;
+	gint i;
+
+	priv = chooser->priv;
+
+	gtk_widget_get_allocation (GTK_WIDGET (chooser), &allocation);
+
+	width = allocation.width;
+	height = allocation.height;
+
+	box_width = (width - 1) / 7;
+
+	for (i = 0; i < 7; i++) {
+		gchar *c;
+		gint day;
+
+		day = i + priv->week_start_day;
+		if (day >= 7)
+			day -= 7;
+
+		gnome_canvas_item_set (
+			priv->boxes[i],
+			"x1", (gdouble) (i * box_width),
+			"y1", (gdouble) 0,
+			"x2", (gdouble) ((i + 1) * box_width),
+			"y2", (gdouble) (height - 1),
+			"line_width", 0.0,
+			NULL);
+
+		c = get_day_text (day);
+		gnome_canvas_item_set (
+			priv->labels[i],
+			"text", c,
+			"x", (gdouble) (i * box_width) + PADDING,
+			"y", (gdouble) (1 + PADDING),
+			NULL);
+		g_free (c);
+	}
+
+	colorize_items (chooser);
+}
+
+static void
+weekday_chooser_set_property (GObject *object,
+                              guint property_id,
+                              const GValue *value,
+                              GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_WEEK_START_DAY:
+			e_weekday_chooser_set_week_start_day (
+				E_WEEKDAY_CHOOSER (object),
+				g_value_get_int (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+weekday_chooser_get_property (GObject *object,
+                              guint property_id,
+                              GValue *value,
+                              GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_WEEK_START_DAY:
+			g_value_set_int (
+				value,
+				e_weekday_chooser_get_week_start_day (
+				E_WEEKDAY_CHOOSER (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+weekday_chooser_constructed (GObject *object)
+{
+	/* Chain up to parent's constructed() method. */
+	G_OBJECT_CLASS (e_weekday_chooser_parent_class)->constructed (object);
+
+	e_extensible_load_extensions (E_EXTENSIBLE (object));
+}
+
+static void
+weekday_chooser_realize (GtkWidget *widget)
+{
+	EWeekdayChooser *chooser;
+
+	chooser = E_WEEKDAY_CHOOSER (widget);
+
+	/* Chain up to parent's realize() method. */
+	GTK_WIDGET_CLASS (e_weekday_chooser_parent_class)->realize (widget);
+
+	configure_items (chooser);
+}
+
+static void
+weekday_chooser_size_allocate (GtkWidget *widget,
+                               GtkAllocation *allocation)
+{
+	GtkWidgetClass *widget_class;
+	EWeekdayChooser *chooser;
+
+	chooser = E_WEEKDAY_CHOOSER (widget);
+
+	/* Chain up to parent's size_allocate() method. */
+	widget_class = GTK_WIDGET_CLASS (e_weekday_chooser_parent_class);
+	widget_class->size_allocate (widget, allocation);
+
+	gnome_canvas_set_scroll_region (
+		GNOME_CANVAS (chooser), 0, 0,
+		allocation->width, allocation->height);
+
+	configure_items (chooser);
+}
+
+static void
+weekday_chooser_style_set (GtkWidget *widget,
+                           GtkStyle *previous_style)
+{
+	GtkWidgetClass *widget_class;
+	EWeekdayChooser *chooser;
+	EWeekdayChooserPrivate *priv;
+	gint max_width;
+	gint i;
+	PangoFontDescription *font_desc;
+	PangoContext *pango_context;
+	PangoFontMetrics *font_metrics;
+	PangoLayout *layout;
+
+	chooser = E_WEEKDAY_CHOOSER (widget);
+	priv = chooser->priv;
+
+	/* Set up Pango prerequisites */
+	font_desc = gtk_widget_get_style (widget)->font_desc;
+	pango_context = gtk_widget_get_pango_context (widget);
+	font_metrics = pango_context_get_metrics (
+		pango_context, font_desc,
+		pango_context_get_language (pango_context));
+	layout = pango_layout_new (pango_context);
+
+	priv->font_ascent =
+		PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics));
+	priv->font_descent =
+		PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics));
+
+	max_width = 0;
+
+	for (i = 0; i < 7; i++) {
+		gchar *c;
+		gint w;
+
+		c = get_day_text (i);
+		pango_layout_set_text (layout, c, strlen (c));
+		pango_layout_get_pixel_size (layout, &w, NULL);
+		g_free (c);
+
+		if (w > max_width)
+			max_width = w;
+	}
+
+	priv->max_letter_width = max_width;
+
+	configure_items (chooser);
+	g_object_unref (layout);
+	pango_font_metrics_unref (font_metrics);
+
+	/* Chain up to parent's style_set() method. */
+	widget_class = GTK_WIDGET_CLASS (e_weekday_chooser_parent_class);
+	widget_class->style_set (widget, previous_style);
+}
+
+static void
+weekday_chooser_get_preferred_height (GtkWidget *widget,
+                                      gint *minimum_height,
+                                      gint *natural_height)
+{
+	EWeekdayChooser *chooser;
+	EWeekdayChooserPrivate *priv;
+
+	chooser = E_WEEKDAY_CHOOSER (widget);
+	priv = chooser->priv;
+
+	*minimum_height = *natural_height =
+		(priv->font_ascent + priv->font_descent + 2 * PADDING + 2);
+}
+
+static void
+weekday_chooser_get_preferred_width (GtkWidget *widget,
+                                     gint *minimum_width,
+                                     gint *natural_width)
+{
+	EWeekdayChooser *chooser;
+	EWeekdayChooserPrivate *priv;
+
+	chooser = E_WEEKDAY_CHOOSER (widget);
+	priv = chooser->priv;
+
+	*minimum_width = *natural_width =
+		(priv->max_letter_width + 2 * PADDING + 1) * 7 + 1;
+}
+
+static gboolean
+weekday_chooser_focus (GtkWidget *widget,
+                       GtkDirectionType direction)
+{
+	EWeekdayChooser *chooser;
+	EWeekdayChooserPrivate *priv;
+
+	g_return_val_if_fail (E_IS_WEEKDAY_CHOOSER (widget), FALSE);
+	chooser = E_WEEKDAY_CHOOSER (widget);
+	priv = chooser->priv;
+
+	if (!gtk_widget_get_can_focus (widget))
+		return FALSE;
+
+	if (gtk_widget_has_focus (widget)) {
+		priv->focus_day = -1;
+		colorize_items (chooser);
+		return FALSE;
+	}
+
+	priv->focus_day = priv->week_start_day;
+	gnome_canvas_item_grab_focus (priv->boxes[priv->focus_day]);
+	colorize_items (chooser);
+
+	return TRUE;
+}
+
+static void
+e_weekday_chooser_class_init (EWeekdayChooserClass *class)
+{
+	GObjectClass *object_class;
+	GtkWidgetClass *widget_class;
+
+	g_type_class_add_private (class, sizeof (EWeekdayChooserPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = weekday_chooser_set_property;
+	object_class->get_property = weekday_chooser_get_property;
+	object_class->constructed = weekday_chooser_constructed;
+
+	widget_class = GTK_WIDGET_CLASS (class);
+	widget_class->realize = weekday_chooser_realize;
+	widget_class->size_allocate = weekday_chooser_size_allocate;
+	widget_class->style_set = weekday_chooser_style_set;
+	widget_class->get_preferred_height = weekday_chooser_get_preferred_height;
+	widget_class->get_preferred_width = weekday_chooser_get_preferred_width;
+	widget_class->focus = weekday_chooser_focus;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_WEEK_START_DAY,
+		g_param_spec_int (
+			"week-start-day",
+			"Week Start Day",
+			NULL,
+			0,  /* Monday */
+			6,  /* Sunday */
+			0,
+			G_PARAM_READWRITE |
+			G_PARAM_STATIC_STRINGS));
+
+	chooser_signals[CHANGED] = g_signal_new (
+		"changed",
+		G_TYPE_FROM_CLASS (class),
+		G_SIGNAL_RUN_FIRST,
+		G_STRUCT_OFFSET (EWeekdayChooserClass, changed),
+		NULL, NULL,
+		g_cclosure_marshal_VOID__VOID,
+		G_TYPE_NONE, 0);
+}
+
+static void
+day_clicked (EWeekdayChooser *chooser,
+             gint index)
+{
+	EWeekdayChooserPrivate *priv = chooser->priv;
+	guint8 day_mask;
+
+	if (priv->blocked_day_mask & (0x1 << index))
+		return;
+
+	if (priv->day_mask & (0x1 << index))
+		day_mask = priv->day_mask & ~(0x1 << index);
+	else
+		day_mask = priv->day_mask | (0x1 << index);
+
+	e_weekday_chooser_set_days (chooser, day_mask);
+}
+
+static gint
+handle_key_press_event (EWeekdayChooser *chooser,
+                        GdkEvent *event)
+{
+	EWeekdayChooserPrivate *priv = chooser->priv;
+	guint keyval = event->key.keyval;
+
+	if (priv->focus_day == -1)
+		priv->focus_day = priv->week_start_day;
+
+	switch (keyval) {
+		case GDK_KEY_Up:
+		case GDK_KEY_Right:
+			priv->focus_day += 1;
+			break;
+		case GDK_KEY_Down:
+		case GDK_KEY_Left:
+			priv->focus_day -= 1;
+			break;
+		case GDK_KEY_space:
+		case GDK_KEY_Return:
+			day_clicked (chooser, priv->focus_day);
+			return TRUE;
+		default:
+			return FALSE;
+	}
+
+	if (priv->focus_day > 6)
+		priv->focus_day = 0;
+	if (priv->focus_day < 0)
+		priv->focus_day = 6;
+
+	colorize_items (chooser);
+	gnome_canvas_item_grab_focus (priv->boxes[priv->focus_day]);
+	return TRUE;
+}
+
+/* Event handler for the day items */
+static gint
+day_event_cb (GnomeCanvasItem *item,
+              GdkEvent *event,
+              gpointer data)
+{
+	EWeekdayChooser *chooser;
+	EWeekdayChooserPrivate *priv;
+	gint i;
+
+	chooser = E_WEEKDAY_CHOOSER (data);
+	priv = chooser->priv;
+
+	if (event->type == GDK_KEY_PRESS)
+		return handle_key_press_event (chooser, event);
+
+	if (!(event->type == GDK_BUTTON_PRESS && event->button.button == 1))
+		return FALSE;
+
+	/* Find which box was clicked */
+
+	for (i = 0; i < 7; i++)
+		if (priv->boxes[i] == item || priv->labels[i] == item)
+			break;
+
+	g_return_val_if_fail (i != 7, TRUE);
+
+	i += priv->week_start_day;
+	if (i >= 7)
+		i -= 7;
+
+	priv->focus_day = i;
+	gnome_canvas_item_grab_focus (priv->boxes[i]);
+	day_clicked (chooser, i);
+	return TRUE;
+}
+
+/* Creates the canvas items for the weekday chooser.
+ * The items are empty until they are configured elsewhere. */
+static void
+create_items (EWeekdayChooser *chooser)
+{
+	EWeekdayChooserPrivate *priv;
+	GnomeCanvasGroup *parent;
+	gint i;
+
+	priv = chooser->priv;
+
+	parent = gnome_canvas_root (GNOME_CANVAS (chooser));
+
+	for (i = 0; i < 7; i++) {
+		priv->boxes[i] = gnome_canvas_item_new (
+			parent,
+			GNOME_TYPE_CANVAS_RECT,
+			NULL);
+		g_signal_connect (
+			priv->boxes[i], "event",
+			G_CALLBACK (day_event_cb), chooser);
+
+		priv->labels[i] = gnome_canvas_item_new (
+			parent,
+			GNOME_TYPE_CANVAS_TEXT,
+			NULL);
+		g_signal_connect (
+			priv->labels[i], "event",
+			G_CALLBACK (day_event_cb), chooser);
+	}
+}
+
+static void
+e_weekday_chooser_init (EWeekdayChooser *chooser)
+{
+	chooser->priv = E_WEEKDAY_CHOOSER_GET_PRIVATE (chooser);
+
+	create_items (chooser);
+	chooser->priv->focus_day = -1;
+}
+
+/**
+ * e_weekday_chooser_new:
+ *
+ * Creates a new #EWeekdayChooser.
+ *
+ * Returns: an #EWeekdayChooser
+ **/
+GtkWidget *
+e_weekday_chooser_new (void)
+{
+	return g_object_new (E_TYPE_WEEKDAY_CHOOSER, NULL);
+}
+
+/**
+ * e_weekday_chooser_get_days:
+ * @chooser: an #EWeekdayChooser
+ *
+ * Queries the days that are selected in @chooser.
+ *
+ * Return value: Bit mask of selected days.  Sunday is bit 0, Monday is bit 1,
+ * etc.
+ **/
+guint8
+e_weekday_chooser_get_days (EWeekdayChooser *chooser)
+{
+	g_return_val_if_fail (E_IS_WEEKDAY_CHOOSER (chooser), 0);
+
+	return chooser->priv->day_mask;
+}
+
+/**
+ * e_weekday_chooser_set_days:
+ * @chooser: an #EWeekdayChooser
+ * @day_mask: Bitmask with the days to be selected.
+ *
+ * Sets the days that are selected in @chooser.  In the @day_mask,
+ * Sunday is bit 0, Monday is bit 1, etc.
+ **/
+void
+e_weekday_chooser_set_days (EWeekdayChooser *chooser,
+                            guint8 day_mask)
+{
+	g_return_if_fail (E_IS_WEEKDAY_CHOOSER (chooser));
+
+	chooser->priv->day_mask = day_mask;
+	colorize_items (chooser);
+
+	g_signal_emit (chooser, chooser_signals[CHANGED], 0);
+}
+
+/**
+ * e_weekday_chooser_get_blocked_days:
+ * @chooser: an #EWeekdayChooser
+ *
+ * Queries the set of days that the @chooser prevents from being modified
+ * by the user.
+ *
+ * Return value: Bit mask of blocked days, with the same format as that
+ * returned by e_weekday_chooser_get_days().
+ **/
+guint
+e_weekday_chooser_get_blocked_days (EWeekdayChooser *chooser)
+{
+	g_return_val_if_fail (E_IS_WEEKDAY_CHOOSER (chooser), 0);
+
+	return chooser->priv->blocked_day_mask;
+}
+
+/**
+ * e_weekday_chooser_set_blocked_days:
+ * @chooser: an #EWeekdayChooser
+ * @blocked_day_mask: Bitmask with the days to be blocked.
+ *
+ * Sets the days that the @chooser will prevent from being modified by
+ * the user.  The @blocked_day_mask is specified in the same way as in
+ * e_weekday_chooser_set_days().
+ **/
+void
+e_weekday_chooser_set_blocked_days (EWeekdayChooser *chooser,
+                                    guint8 blocked_day_mask)
+{
+	g_return_if_fail (E_IS_WEEKDAY_CHOOSER (chooser));
+
+	chooser->priv->blocked_day_mask = blocked_day_mask;
+}
+
+/**
+ * e_weekday_chooser_get_week_start_day:
+ * @chooser: an #EWeekdayChooser
+ *
+ * Queries the day that defines the start of the week in @chooser.
+ *
+ * Return value: Index of the day that defines the start of the week.  See
+ * weekday_chooser_set_week_start_day() to see how this is represented.
+ **/
+gint
+e_weekday_chooser_get_week_start_day (EWeekdayChooser *chooser)
+{
+	g_return_val_if_fail (E_IS_WEEKDAY_CHOOSER (chooser), -1);
+
+	return chooser->priv->week_start_day;
+}
+
+/**
+ * e_weekday_chooser_set_week_start_day:
+ * @chooser: an #EWeekdayChooser
+ * @week_start_day: Index of the day that defines the start of the week; 0 is
+ * Sunday, 1 is Monday, etc.
+ *
+ * Sets the day that defines the start of the week for @chooser.
+ **/
+void
+e_weekday_chooser_set_week_start_day (EWeekdayChooser *chooser,
+                                      gint week_start_day)
+{
+	g_return_if_fail (E_IS_WEEKDAY_CHOOSER (chooser));
+	g_return_if_fail (week_start_day >= 0 && week_start_day < 7);
+
+	if (week_start_day == chooser->priv->week_start_day)
+		return;
+
+	chooser->priv->week_start_day = week_start_day;
+
+	configure_items (chooser);
+
+	g_object_notify (G_OBJECT (chooser), "week-start-day");
+}
+