New full-day widget. It is still a work in progress. It will be similar to

1998-04-02  Federico Mena Quintero  <federico@nuclecu.unam.mx>

	* gncal-full-day.c: New full-day widget.  It is still a work in
	progress.  It will be similar to M$ Schedule's nifty full day view
	widget, but with Gtk's elegance :-)

	* Makefile.am (gnomecal_SOURCES): Added gncal-full-day.[ch] to the sources.

svn path=/trunk/; revision=99

1 files changed, 320 insertions, 0 deletions

diff --git a/calendar/gncal-full-day.c b/calendar/gncal-full-day.c
new file mode 100644
index 0000000000..4b4820417a
--- /dev/null
+++ b/calendar/gncal-full-day.c
@@ -0,0 +1,320 @@
+/* Full day widget for gncal
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ *
+ * Author: Federico Mena <federico@nuclecu.unam.mx>
+ */
+
+#include <gtk/gtkdrawingarea.h>
+#include "gncal-full-day.h"
+
+
+#define TEXT_BORDER 2
+#define MIN_WIDTH 200
+
+
+static void gncal_full_day_class_init    (GncalFullDayClass *class);
+static void gncal_full_day_init          (GncalFullDay      *fullday);
+static void gncal_full_day_realize       (GtkWidget         *widget);
+static void gncal_full_day_size_request  (GtkWidget         *widget,
+					  GtkRequisition    *requisition);
+static void gncal_full_day_size_allocate (GtkWidget         *widget,
+					  GtkAllocation     *allocation);
+static gint gncal_full_day_expose        (GtkWidget         *widget,
+					  GdkEventExpose    *event);
+
+
+static GtkContainerClass *parent_class;
+
+
+guint
+gncal_full_day_get_type (void)
+{
+	static guint full_day_type = 0;
+
+	if (!full_day_type) {
+		GtkTypeInfo full_day_info = {
+			"GncalFullDay",
+			sizeof (GncalFullDay),
+			sizeof (GncalFullDayClass),
+			(GtkClassInitFunc) gncal_full_day_class_init,
+			(GtkObjectInitFunc) gncal_full_day_init,
+			(GtkArgSetFunc) NULL,
+			(GtkArgGetFunc) NULL
+		};
+
+		full_day_type = gtk_type_unique (gtk_container_get_type (), &full_day_info);
+	}
+
+	return full_day_type;
+}
+
+static void
+gncal_full_day_class_init (GncalFullDayClass *class)
+{
+	GtkWidgetClass    *widget_class;
+	GtkContainerClass *container_class;
+
+	widget_class = (GtkWidgetClass *) class;
+	container_class = (GtkContainerClass *) class;
+
+	parent_class = gtk_type_class (gtk_container_get_type ());
+
+	widget_class->realize = gncal_full_day_realize;
+	widget_class->size_request = gncal_full_day_size_request;
+	widget_class->size_allocate = gncal_full_day_size_allocate;
+	widget_class->expose_event = gncal_full_day_expose;
+}
+
+static void
+gncal_full_day_init (GncalFullDay *fullday)
+{
+	GTK_WIDGET_UNSET_FLAGS (fullday, GTK_NO_WINDOW);
+
+	fullday->calendar = NULL;
+
+	fullday->lower = 0;
+	fullday->upper = 0;
+	fullday->interval = 30; /* 30 minutes by default */
+}
+
+GtkWidget *
+gncal_full_day_new (GnomeCalendar *calendar, time_t lower, time_t upper)
+{
+	GncalFullDay *fullday;
+
+	g_return_val_if_fail (calendar != NULL, NULL);
+
+	fullday = gtk_type_new (gncal_full_day_get_type ());
+
+	fullday->calendar = calendar;
+
+	gncal_full_day_set_bounds (fullday, lower, upper);
+
+	return GTK_WIDGET (fullday);
+}
+
+static void
+gncal_full_day_realize (GtkWidget *widget)
+{
+	GdkWindowAttr attributes;
+	gint attributes_mask;
+
+	g_return_if_fail (widget != NULL);
+	g_return_if_fail (GNCAL_IS_FULL_DAY (widget));
+
+	GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+
+	attributes.window_type = GDK_WINDOW_CHILD;
+	attributes.x = widget->allocation.x;
+	attributes.y = widget->allocation.y;
+	attributes.width = widget->allocation.width;
+	attributes.height = widget->allocation.height;
+	attributes.wclass = GDK_INPUT_OUTPUT;
+	attributes.visual = gtk_widget_get_visual (widget);
+	attributes.colormap = gtk_widget_get_colormap (widget);
+	attributes.event_mask = (gtk_widget_get_events (widget)
+				 | GDK_EXPOSURE_MASK);
+
+	attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+
+	widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
+	gdk_window_set_user_data (widget->window, widget);
+
+	widget->style = gtk_style_attach (widget->style, widget->window);
+	gdk_window_set_background (widget->window, &widget->style->bg[GTK_STATE_PRELIGHT]);
+}
+
+static int
+get_tm_bounds (GncalFullDay *fullday, struct tm *lower, struct tm *upper)
+{
+	struct tm tm_lower, tm_upper;
+	int lmin, umin;
+
+	/* Lower */
+
+	tm_lower = *localtime (&fullday->lower);
+
+	if ((tm_lower.tm_min % fullday->interval) != 0) {
+		tm_lower.tm_min -= tm_lower.tm_min % fullday->interval; /* round down */
+		mktime (&tm_lower);
+	}
+
+	/* Upper */
+
+	tm_upper = *localtime (&fullday->upper);
+
+	if ((tm_upper.tm_min % fullday->interval) != 0) {
+		tm_upper.tm_min += fullday->interval - (tm_upper.tm_min % fullday->interval); /* round up */
+		mktime (&tm_upper);
+	}
+
+	if (lower)
+		*lower = tm_lower;
+
+	if (upper)
+		*upper = tm_upper;
+
+	lmin = 60 * tm_lower.tm_hour + tm_lower.tm_min;
+	umin = 60 * tm_upper.tm_hour + tm_upper.tm_min;
+
+	return (umin - lmin) / fullday->interval; /* number of rows in view */
+}
+
+static int
+calc_labels_width (GncalFullDay *fullday)
+{
+	struct tm cur, upper;
+	time_t tim, time_upper;
+	int width, max_w;
+	char buf[256];
+
+	get_tm_bounds (fullday, &cur, &upper);
+
+	max_w = 0;
+
+	tim = mktime (&cur);
+	time_upper = mktime (&upper);
+
+	while (tim < time_upper) {
+		strftime (buf, 256, "%R%p", &cur);
+
+		width = gdk_string_width (GTK_WIDGET (fullday)->style->font, buf);
+
+		if (width > max_w)
+			max_w = width;
+
+		cur.tm_min += fullday->interval;
+		tim = mktime (&cur);
+	}
+
+	return max_w;
+}
+
+static void
+gncal_full_day_size_request (GtkWidget *widget, GtkRequisition *requisition)
+{
+	GncalFullDay *fullday;
+	int labels_width;
+	int rows;
+
+	g_return_if_fail (widget != NULL);
+	g_return_if_fail (GNCAL_IS_FULL_DAY (widget));
+	g_return_if_fail (requisition != NULL);
+
+	fullday = GNCAL_FULL_DAY (widget);
+
+	/* Border and min width */
+
+	labels_width = calc_labels_width (fullday);
+
+	requisition->width = 2 * widget->style->klass->xthickness + 4 * TEXT_BORDER + labels_width + MIN_WIDTH;
+	requisition->height = 2 * widget->style->klass->ythickness;
+
+	/* Rows */
+
+	rows = get_tm_bounds (fullday, NULL, NULL);
+
+	requisition->height += (rows * (2 * TEXT_BORDER + widget->style->font->ascent + widget->style->font->descent)
+				+ (rows - 1)); /* division lines */
+}
+
+static void
+gncal_full_day_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
+{
+	g_return_if_fail (widget != NULL);
+	g_return_if_fail (GNCAL_IS_FULL_DAY (widget));
+	g_return_if_fail (allocation != NULL);
+
+	widget->allocation = *allocation;
+
+	if (GTK_WIDGET_REALIZED (widget))
+		gdk_window_move_resize (widget->window,
+					allocation->x, allocation->y,
+					allocation->width, allocation->height);
+
+	/* FIXME: adjust children */
+}
+
+static void
+paint_back (GncalFullDay *fullday, GdkRectangle *area)
+{
+	GtkWidget *widget;
+	GdkRectangle rect;
+	int x1, y1, width, height;
+	int labels_width, division_x;
+
+	widget = GTK_WIDGET (fullday);
+
+	x1 = widget->style->klass->xthickness;
+	y1 = widget->style->klass->ythickness;
+	width = widget->allocation.width - 2 * x1;
+	height = widget->allocation.height - 2 * y1;
+
+	/* Clear and paint frame shadow */
+
+	gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
+
+	gtk_draw_shadow (widget->style, widget->window,
+			 GTK_STATE_NORMAL, GTK_SHADOW_ETCHED_IN,
+			 0, 0,
+			 widget->allocation.width,
+			 widget->allocation.height);
+
+	/* Vertical division */
+
+	labels_width = calc_labels_width (fullday);
+
+	division_x = x1 + 2 * TEXT_BORDER + labels_width;
+
+	gtk_draw_vline (widget->style, widget->window,
+			GTK_STATE_NORMAL,
+			y1,
+			y1 + height - 1,
+			division_x);
+}
+
+static gint
+gncal_full_day_expose (GtkWidget *widget, GdkEventExpose *event)
+{
+	GncalFullDay *fullday;
+
+	g_return_val_if_fail (widget != NULL, FALSE);
+	g_return_val_if_fail (GNCAL_IS_FULL_DAY (widget), FALSE);
+	g_return_val_if_fail (event != NULL, FALSE);
+
+	if (!GTK_WIDGET_DRAWABLE (widget))
+		return FALSE;
+
+	fullday = GNCAL_FULL_DAY (widget);
+
+	if (event->window == widget->window)
+		paint_back (fullday, &event->area);
+
+	/* FIXME: paint handles in windows if event->window == blah blah */
+
+	return FALSE;
+}
+
+void
+gncal_full_day_update (GncalFullDay *fullday)
+{
+	g_return_if_fail (fullday != NULL);
+	g_return_if_fail (GNCAL_IS_FULL_DAY (fullday));
+
+	/* FIXME */
+}
+
+void
+gncal_full_day_set_bounds (GncalFullDay *fullday, time_t lower, time_t upper)
+{
+	g_return_if_fail (fullday != NULL);
+	g_return_if_fail (GNCAL_IS_FULL_DAY (fullday));
+
+	if ((lower != fullday->lower) || (upper != fullday->upper)) {
+		fullday->lower = lower;
+		fullday->upper = upper;
+
+		gncal_full_day_update (fullday);
+	}
+}