New widget for Day/Work-Week views. Unfinished.

svn path=/trunk/; revision=2115

1 files changed, 312 insertions, 0 deletions

diff --git a/calendar/gui/e-day-view-time-item.c b/calendar/gui/e-day-view-time-item.c
new file mode 100644
index 0000000000..aa86cc2ca8
--- /dev/null
+++ b/calendar/gui/e-day-view-time-item.c
@@ -0,0 +1,312 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/* 
+ * Author : 
+ *  Damon Chaplin <damon@helixcode.com>
+ *
+ * Copyright 1999, 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
+ */
+
+/*
+ * EDayViewTimeItem - canvas item which displays the times down the left of
+ * the EDayView.
+ */
+
+#include "e-day-view-time-item.h"
+
+
+/* The spacing between items in the time column. GRID_X_PAD is the space down
+   either side of the column, i.e. outside the main horizontal grid lines.
+   HOUR_L_PAD & HOUR_R_PAD are the spaces on the left & right side of the
+   big hour number (this is inside the horizontal grid lines).
+   MIN_X_PAD is the spacing either side of the minute number. The smaller
+   horizontal grid lines match with this.
+   60_MIN_X_PAD is the space either side of the HH:MM display used when
+   we are displaying 60 mins per row (inside the main grid lines). */
+#define E_DVTMI_TIME_GRID_X_PAD	4
+#define E_DVTMI_HOUR_L_PAD	4
+#define E_DVTMI_HOUR_R_PAD	2
+#define E_DVTMI_MIN_X_PAD	2
+#define E_DVTMI_60_MIN_X_PAD	4
+
+
+static void e_day_view_time_item_class_init (EDayViewTimeItemClass *class);
+static void e_day_view_time_item_init (EDayViewTimeItem *dvtmitem);
+static void e_day_view_time_item_set_arg (GtkObject *o,
+					  GtkArg *arg,
+					  guint arg_id);
+
+static void e_day_view_time_item_update (GnomeCanvasItem *item,
+					 double *affine,
+					 ArtSVP *clip_path, int flags);
+static void e_day_view_time_item_draw (GnomeCanvasItem *item,
+				       GdkDrawable *drawable,
+				       int x, int y,
+				       int width, int height);
+static double e_day_view_time_item_point (GnomeCanvasItem *item,
+					  double x, double y,
+					  int cx, int cy,
+					  GnomeCanvasItem **actual_item);
+
+
+
+static GnomeCanvasItemClass *parent_class;
+
+
+/* The arguments we take */
+enum {
+	ARG_0,
+	ARG_DAY_VIEW
+};
+
+
+GtkType
+e_day_view_time_item_get_type (void)
+{
+	static GtkType e_day_view_time_item_type = 0;
+
+	if (!e_day_view_time_item_type) {
+		GtkTypeInfo e_day_view_time_item_info = {
+			"EDayViewTimeItem",
+			sizeof (EDayViewTimeItem),
+			sizeof (EDayViewTimeItemClass),
+			(GtkClassInitFunc) e_day_view_time_item_class_init,
+			(GtkObjectInitFunc) e_day_view_time_item_init,
+			NULL, /* reserved_1 */
+			NULL, /* reserved_2 */
+			(GtkClassInitFunc) NULL
+		};
+
+		e_day_view_time_item_type = gtk_type_unique (gnome_canvas_item_get_type (), &e_day_view_time_item_info);
+	}
+
+	return e_day_view_time_item_type;
+}
+
+
+static void
+e_day_view_time_item_class_init (EDayViewTimeItemClass *class)
+{
+	GtkObjectClass  *object_class;
+	GnomeCanvasItemClass *item_class;
+
+	parent_class = gtk_type_class (gnome_canvas_item_get_type());
+
+	object_class = (GtkObjectClass *) class;
+	item_class = (GnomeCanvasItemClass *) class;
+
+	gtk_object_add_arg_type ("EDayViewTimeItem::day_view",
+				 GTK_TYPE_POINTER, GTK_ARG_WRITABLE,
+				 ARG_DAY_VIEW);
+
+	object_class->set_arg = e_day_view_time_item_set_arg;
+
+	/* GnomeCanvasItem method overrides */
+	item_class->update      = e_day_view_time_item_update;
+	item_class->draw        = e_day_view_time_item_draw;
+	item_class->point       = e_day_view_time_item_point;
+}
+
+
+static void
+e_day_view_time_item_init (EDayViewTimeItem *dvtmitm)
+{
+
+}
+
+
+static void
+e_day_view_time_item_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
+{
+	GnomeCanvasItem *item;
+	EDayViewTimeItem *dvtmitem;
+
+	item = GNOME_CANVAS_ITEM (o);
+	dvtmitem = E_DAY_VIEW_TIME_ITEM (o);
+	
+	switch (arg_id){
+	case ARG_DAY_VIEW:
+		dvtmitem->day_view = GTK_VALUE_POINTER (*arg);
+		break;
+	}
+}
+
+
+static void
+e_day_view_time_item_update (GnomeCanvasItem *item,
+			    double *affine,
+			    ArtSVP *clip_path,
+			    int flags)
+{
+	if (GNOME_CANVAS_ITEM_CLASS (parent_class)->update)
+		(* GNOME_CANVAS_ITEM_CLASS (parent_class)->update) (item, affine, clip_path, flags);
+
+	/* The item covers the entire canvas area. */
+	item->x1 = 0;
+	item->y1 = 0;
+	item->x2 = INT_MAX;
+	item->y2 = INT_MAX;
+}
+
+
+/* Returns the minimum width needed for the column, by adding up all the
+   maximum widths of the strings. The string widths are all calculated in
+   the style_set handlers of EDayView and EDayViewTimeCanvas. */
+gint
+e_day_view_time_item_get_column_width (EDayViewTimeItem *dvtmitem)
+{
+	EDayView *day_view;
+
+	day_view = dvtmitem->day_view;
+	g_return_val_if_fail (day_view != NULL, 0);
+
+	/* Calculate the width of each time column. */
+	if (day_view->mins_per_row == 60) {
+		dvtmitem->column_width = day_view->max_small_hour_width
+			+ day_view->colon_width
+			+ day_view->max_minute_width
+			+ E_DVTMI_60_MIN_X_PAD * 2
+			+ E_DVTMI_TIME_GRID_X_PAD * 2;
+	} else {
+		dvtmitem->column_width = day_view->max_large_hour_width
+			+ day_view->max_minute_width
+			+ E_DVTMI_MIN_X_PAD * 2
+			+ E_DVTMI_HOUR_L_PAD
+			+ E_DVTMI_HOUR_R_PAD
+			+ E_DVTMI_TIME_GRID_X_PAD * 2;
+	}
+
+	return dvtmitem->column_width;
+}
+
+
+/*
+ * DRAWING ROUTINES - functions to paint the canvas item.
+ */
+
+static void
+e_day_view_time_item_draw (GnomeCanvasItem *canvas_item,
+			   GdkDrawable	   *drawable,
+			   int		    x,
+			   int		    y,
+			   int		    width,
+			   int		    height)
+{
+	EDayView *day_view;
+	EDayViewTimeItem *dvtmitem;
+	gint time_hour_x1, time_hour_x2, time_min_x1;
+	gint hour, minute, hour_y, min_y, hour_r, min_r, start_y;
+	gint row, row_y, min_width, hour_width;
+	GtkStyle *style;
+	GdkFont *small_font, *large_font;
+	GdkGC *fg_gc, *dark_gc;
+	gchar buffer[16];
+
+	dvtmitem = E_DAY_VIEW_TIME_ITEM (canvas_item);
+	day_view = dvtmitem->day_view;
+	g_return_if_fail (day_view != NULL);
+
+	style = GTK_WIDGET (day_view)->style;
+	small_font = style->font;
+	large_font = day_view->large_font;
+	fg_gc = style->fg_gc[GTK_STATE_NORMAL];
+	dark_gc = style->dark_gc[GTK_STATE_NORMAL];
+
+	/* Step through each row, drawing the horizontal grid lines for each
+	   day column and the times. */
+	time_hour_x1 = E_DVTMI_TIME_GRID_X_PAD - x;
+	time_hour_x2 = dvtmitem->column_width - E_DVTMI_TIME_GRID_X_PAD - x;
+	if (day_view->mins_per_row == 60) {
+		min_r = time_hour_x2 - E_DVTMI_60_MIN_X_PAD;
+	} else {
+		time_min_x1 = time_hour_x2 - E_DVTMI_MIN_X_PAD * 2
+			- day_view->max_minute_width;
+		hour_r = time_min_x1 - E_DVTMI_HOUR_R_PAD;
+		min_r = time_hour_x2 - E_DVTMI_MIN_X_PAD;
+	}
+
+	hour = day_view->first_hour_shown;
+	hour_y = large_font->ascent + 2; /* FIXME */
+	minute = day_view->first_minute_shown;
+	min_y = small_font->ascent + 2; /* FIXME */
+	start_y = 0 - MAX (day_view->row_height, hour_y + large_font->descent);
+	for (row = 0, row_y = 0 - y;
+	     row < day_view->rows && row_y < height;
+	     row++, row_y += day_view->row_height) {
+		if (row_y > start_y) {
+			/* Draw the times down the left if needed. */
+			if (min_r <= 0)
+				continue;
+
+			if (day_view->mins_per_row == 60) {
+				gdk_draw_line (drawable, dark_gc,
+					       time_hour_x1, row_y,
+					       time_hour_x2, row_y);
+				sprintf (buffer, "%02i:%02i", hour, minute);
+				min_width = day_view->small_hour_widths[hour] + day_view->minute_widths[minute / 5] + day_view->colon_width;
+				gdk_draw_string (drawable, small_font, fg_gc,
+						 min_r - min_width,
+						 row_y + min_y, buffer);
+			} else {
+				if (minute == 0) {
+					gdk_draw_line (drawable, dark_gc,
+						       time_hour_x1, row_y,
+						       time_hour_x2, row_y);
+					sprintf (buffer, "%02i", hour);
+					hour_width = day_view->large_hour_widths[hour];
+					gdk_draw_string (drawable, large_font,
+							 fg_gc,
+							 hour_r - hour_width,
+							 row_y + hour_y,
+							 buffer);
+				} else {
+					gdk_draw_line (drawable, dark_gc,
+						       time_min_x1, row_y,
+						       time_hour_x2, row_y);
+				}
+
+				if (day_view->mins_per_row != 30
+				    || minute != 30) {
+					sprintf (buffer, "%02i", minute);
+					min_width = day_view->minute_widths[minute / 5];
+					gdk_draw_string (drawable, small_font,
+							 fg_gc,
+							 min_r - min_width,
+							 row_y + min_y,
+							 buffer);
+				}
+			}
+		}
+
+		minute += day_view->mins_per_row;
+		if (minute >= 60) {
+			hour++;
+			minute -= 60;
+		}
+	}
+}
+
+
+static double
+e_day_view_time_item_point (GnomeCanvasItem *item, double x, double y,
+			    int cx, int cy,
+			    GnomeCanvasItem **actual_item)
+{
+	*actual_item = item;
+	return 0.0;
+}