calendar/gui/e-week-view-titles-item.c

   1 /*
   2  * EWeekViewTitlesItem - displays the 'Monday', 'Tuesday' etc. at the top of
   3  * the Month calendar view.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) version 3.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with the program; if not, see <http://www.gnu.org/licenses/>
  17  *
  18  * Authors:
  19  *              Damon Chaplin <damon@ximian.com>
  20  *
  21  * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <string.h>
  29 #include <e-util/e-util.h>
  30 #include "e-week-view-titles-item.h"
  31
  32 #define E_WEEK_VIEW_TITLES_ITEM_GET_PRIVATE(obj) \
  33         (G_TYPE_INSTANCE_GET_PRIVATE \
  34         ((obj), E_TYPE_WEEK_VIEW_TITLES_ITEM, EWeekViewTitlesItemPrivate))
  35
  36 struct _EWeekViewTitlesItemPrivate {
  37         EWeekView *week_view;
  38 };
  39
  40 enum {
  41         PROP_0,
  42         PROP_WEEK_VIEW
  43 };
  44
  45 static gpointer parent_class;
  46
  47 static void
  48 week_view_titles_item_set_property (GObject *object,
  49                                     guint property_id,
  50                                     const GValue *value,
  51                                     GParamSpec *pspec)
  52 {
  53         switch (property_id) {
  54                 case PROP_WEEK_VIEW:
  55                         e_week_view_titles_item_set_week_view (
  56                                 E_WEEK_VIEW_TITLES_ITEM (object),
  57                                 g_value_get_object (value));
  58                         return;
  59         }
  60
  61         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
  62 }
  63
  64 static void
  65 week_view_titles_item_get_property (GObject *object,
  66                                     guint property_id,
  67                                     GValue *value,
  68                                     GParamSpec *pspec)
  69 {
  70         switch (property_id) {
  71                 case PROP_WEEK_VIEW:
  72                         g_value_set_object (
  73                                 value,
  74                                 e_week_view_titles_item_get_week_view (
  75                                 E_WEEK_VIEW_TITLES_ITEM (object)));
  76                         return;
  77         }
  78
  79         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
  80 }
  81
  82 static void
  83 week_view_titles_item_dispose (GObject *object)
  84 {
  85         EWeekViewTitlesItemPrivate *priv;
  86
  87         priv = E_WEEK_VIEW_TITLES_ITEM_GET_PRIVATE (object);
  88
  89         if (priv->week_view != NULL) {
  90                 g_object_unref (priv->week_view);
  91                 priv->week_view = NULL;
  92         }
  93
  94         /* Chain up to parent's dispose() method. */
  95         G_OBJECT_CLASS (parent_class)->dispose (object);
  96 }
  97
  98 static void
  99 week_view_titles_item_update (GnomeCanvasItem *item,
 100                               const cairo_matrix_t *i2c,
 101                               gint flags)
 102 {
 103         GnomeCanvasItemClass *canvas_item_class;
 104
 105         /* Chain up to parent's update() method. */
 106         canvas_item_class = GNOME_CANVAS_ITEM_CLASS (parent_class);
 107         canvas_item_class->update (item, i2c, flags);
 108
 109         /* The item covers the entire canvas area. */
 110         item->x1 = 0;
 111         item->y1 = 0;
 112         item->x2 = INT_MAX;
 113         item->y2 = INT_MAX;
 114 }
 115
 116 static void
 117 week_view_titles_item_draw (GnomeCanvasItem *canvas_item,
 118                             GdkDrawable *drawable,
 119                             gint x,
 120                             gint y,
 121                             gint width,
 122                             gint height)
 123 {
 124         EWeekViewTitlesItem *titles_item;
 125         EWeekView *week_view;
 126         GtkStyle *style;
 127         gint col_width, col, date_width, date_x;
 128         gchar buffer[128];
 129         GtkAllocation allocation;
 130         gboolean abbreviated;
 131         gint weekday;
 132         PangoLayout *layout;
 133         cairo_t *cr;
 134
 135         titles_item = E_WEEK_VIEW_TITLES_ITEM (canvas_item);
 136         week_view = e_week_view_titles_item_get_week_view (titles_item);
 137         g_return_if_fail (week_view != NULL);
 138
 139         cr = gdk_cairo_create (drawable);
 140         cairo_set_line_width (cr, 1.0);
 141
 142         gtk_widget_get_allocation (
 143                 GTK_WIDGET (canvas_item->canvas), &allocation);
 144
 145         style = gtk_widget_get_style (GTK_WIDGET (week_view));
 146         layout = gtk_widget_create_pango_layout (GTK_WIDGET (week_view), NULL);
 147
 148         /* Draw the shadow around the dates. */
 149         gdk_cairo_set_source_color (cr, &style->light[GTK_STATE_NORMAL]);
 150         cairo_move_to (cr, 1.5 - x, 1.5 - y);
 151         cairo_rel_line_to (cr, allocation.width - 1, 0);
 152         cairo_move_to (cr, 1.5 - x, 2.5 - y);
 153         cairo_rel_line_to (cr, 0, allocation.height - 1);
 154         cairo_stroke (cr);
 155
 156         gdk_cairo_set_source_color (cr, &style->dark[GTK_STATE_NORMAL]);
 157         cairo_rectangle (cr, 0.5 - x, 0.5 - y, allocation.width - 1, allocation.height);
 158         cairo_stroke (cr);
 159
 160         /* Determine the format to use. */
 161         col_width = allocation.width / week_view->columns;
 162         abbreviated = (week_view->max_day_width + 2 >= col_width);
 163
 164         /* Shift right one pixel to account for the shadow around the main
 165            canvas. */
 166         x--;
 167
 168         /* Draw the date. Set a clipping rectangle so we don't draw over the
 169            next day. */
 170         weekday = week_view->display_start_day;
 171         for (col = 0; col < week_view->columns; col++) {
 172                 if (weekday == 5 && week_view->compress_weekend)
 173                         g_snprintf (
 174                                 buffer, sizeof (buffer), "%s/%s",
 175                                 e_get_weekday_name (G_DATE_SATURDAY, TRUE),
 176                                 e_get_weekday_name (G_DATE_SUNDAY, TRUE));
 177                 else
 178                         g_snprintf (
 179                                 buffer, sizeof (buffer), "%s",
 180                                 e_get_weekday_name (weekday + 1, abbreviated));
 181
 182                 cairo_save (cr);
 183
 184                 cairo_rectangle (cr,
 185                                  week_view->col_offsets[col] - x, 2 - y,
 186                                  week_view->col_widths[col], allocation.height - 2);
 187                 cairo_clip (cr);
 188
 189                 if (weekday == 5 && week_view->compress_weekend)
 190                         date_width = week_view->abbr_day_widths[5]
 191                                 + week_view->slash_width
 192                                 + week_view->abbr_day_widths[6];
 193                 else if (abbreviated)
 194                         date_width = week_view->abbr_day_widths[weekday];
 195                 else
 196                         date_width = week_view->day_widths[weekday];
 197
 198                 date_x = week_view->col_offsets[col]
 199                         + (week_view->col_widths[col] - date_width) / 2;
 200                 date_x = MAX (date_x, week_view->col_offsets[col]);
 201
 202                 pango_layout_set_text (layout, buffer, -1);
 203                 cairo_move_to (cr, date_x - x, 3 - y);
 204                 pango_cairo_show_layout (cr, layout);
 205
 206                 cairo_restore (cr);
 207
 208                 /* Draw the lines down the left and right of the date cols. */
 209                 if (col != 0) {
 210                         gdk_cairo_set_source_color (cr, &style->light[GTK_STATE_NORMAL]);
 211                         cairo_move_to (cr, week_view->col_offsets[col] - x + 0.5, 4.5 - y);
 212                         cairo_rel_line_to (cr, 0, allocation.height - 8);
 213                         cairo_stroke (cr);
 214
 215                         gdk_cairo_set_source_color (cr, &style->dark[GTK_STATE_NORMAL]);
 216                         cairo_move_to (cr, week_view->col_offsets[col] - x - 0.5, 4.5 - y);
 217                         cairo_rel_line_to (cr, 0, allocation.height - 8);
 218                         cairo_stroke (cr);
 219                 }
 220
 221                 /* Draw the lines between each column. */
 222                 if (col != 0) {
 223                         cairo_set_source_rgb (cr, 0, 0, 0);
 224                         cairo_rectangle (cr, week_view->col_offsets[col] - x, allocation.height - y, 1, 1);
 225                         cairo_fill (cr);
 226                 }
 227
 228                 if (weekday == 5 && week_view->compress_weekend)
 229                         weekday += 2;
 230                 else
 231                         weekday++;
 232
 233                 weekday = weekday % 7;
 234         }
 235
 236         g_object_unref (layout);
 237         cairo_destroy (cr);
 238 }
 239
 240 static GnomeCanvasItem *
 241 week_view_titles_item_point (GnomeCanvasItem *item,
 242                              gdouble x,
 243                              gdouble y,
 244                              gint cx,
 245                              gint cy)
 246 {
 247         return item;
 248 }
 249
 250 static void
 251 week_view_titles_item_class_init (EWeekViewTitlesItemClass *class)
 252 {
 253         GObjectClass  *object_class;
 254         GnomeCanvasItemClass *item_class;
 255
 256         parent_class = g_type_class_peek_parent (class);
 257         g_type_class_add_private (class, sizeof (EWeekViewTitlesItemPrivate));
 258
 259         object_class = G_OBJECT_CLASS (class);
 260         object_class->set_property = week_view_titles_item_set_property;
 261         object_class->get_property = week_view_titles_item_get_property;
 262         object_class->dispose = week_view_titles_item_dispose;
 263
 264         item_class = GNOME_CANVAS_ITEM_CLASS (class);
 265         item_class->update = week_view_titles_item_update;
 266         item_class->draw = week_view_titles_item_draw;
 267         item_class->point = week_view_titles_item_point;
 268
 269         g_object_class_install_property (
 270                 object_class,
 271                 PROP_WEEK_VIEW,
 272                 g_param_spec_object (
 273                         "week-view",
 274                         "Week View",
 275                         NULL,
 276                         E_TYPE_WEEK_VIEW,
 277                         G_PARAM_READWRITE));
 278 }
 279
 280 static void
 281 week_view_titles_item_init (EWeekViewTitlesItem *titles_item)
 282 {
 283         titles_item->priv = E_WEEK_VIEW_TITLES_ITEM_GET_PRIVATE (titles_item);
 284 }
 285
 286 GType
 287 e_week_view_titles_item_get_type (void)
 288 {
 289         static GType type = 0;
 290
 291         if (G_UNLIKELY (type == 0)) {
 292                 const GTypeInfo type_info = {
 293                         sizeof (EWeekViewTitlesItemClass),
 294                         (GBaseInitFunc) NULL,
 295                         (GBaseFinalizeFunc) NULL,
 296                         (GClassInitFunc) week_view_titles_item_class_init,
 297                         (GClassFinalizeFunc) NULL,
 298                         NULL,  /* class_data */
 299                         sizeof (EWeekViewTitlesItem),
 300                         0,     /* n_preallocs */
 301                         (GInstanceInitFunc) week_view_titles_item_init,
 302                         NULL   /* value_table */
 303                 };
 304
 305                 type = g_type_register_static (
 306                         GNOME_TYPE_CANVAS_ITEM, "EWeekViewTitlesItem",
 307                         &type_info, 0);
 308         }
 309
 310         return type;
 311 }
 312
 313 EWeekView *
 314 e_week_view_titles_item_get_week_view (EWeekViewTitlesItem *titles_item)
 315 {
 316         g_return_val_if_fail (E_IS_WEEK_VIEW_TITLES_ITEM (titles_item), NULL);
 317
 318         return titles_item->priv->week_view;
 319 }
 320
 321 void
 322 e_week_view_titles_item_set_week_view (EWeekViewTitlesItem *titles_item,
 323                                        EWeekView *week_view)
 324 {
 325         g_return_if_fail (E_IS_WEEK_VIEW_TITLES_ITEM (titles_item));
 326         g_return_if_fail (E_IS_WEEK_VIEW (week_view));
 327
 328         if (titles_item->priv->week_view != NULL)
 329                 g_object_unref (titles_item->priv->week_view);
 330
 331         titles_item->priv->week_view = g_object_ref (week_view);
 332
 333         g_object_notify (G_OBJECT (titles_item), "week-view");
 334 }