aboutsummaryrefslogtreecommitdiffstats
path: root/calendar/gui/e-week-view-main-item.c
blob: ef419d0cbd08587e7d3481007a0d95e765541b76 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * Author :
 *  Damon Chaplin <damon@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 * USA
 */

/*
 * EWeekViewMainItem - displays the background grid and dates for the Week and
 * Month calendar views.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>
#include <glib.h>
#include <glib/gi18n.h>
#include "e-week-view-main-item.h"
#include "ea-calendar.h"

static void e_week_view_main_item_set_property  (GObject     *object,
                         guint        property_id,
                         const GValue    *value,
                         GParamSpec  *pspec);
static void e_week_view_main_item_update    (GnomeCanvasItem *item,
                         double      *affine,
                         ArtSVP      *clip_path,
                         int          flags);
static void e_week_view_main_item_draw      (GnomeCanvasItem *item,
                         GdkDrawable     *drawable,
                         int          x,
                         int          y,
                         int          width,
                         int          height);
static void e_week_view_main_item_draw_day  (EWeekViewMainItem *wvmitem,
                         gint          day,
                         GDate        *date,
                         GdkDrawable       *drawable,
                         gint          x,
                         gint          y,
                         gint          width,
                         gint          height);
static double e_week_view_main_item_point   (GnomeCanvasItem *item,
                         double       x,
                         double       y,
                         int          cx,
                         int          cy,
                         GnomeCanvasItem **actual_item);

/* The arguments we take */
enum {
    PROP_0,
    PROP_WEEK_VIEW
};

G_DEFINE_TYPE (EWeekViewMainItem, e_week_view_main_item, GNOME_TYPE_CANVAS_ITEM)

static void
e_week_view_main_item_class_init (EWeekViewMainItemClass *class)
{
    GObjectClass  *object_class;
    GnomeCanvasItemClass *item_class;

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = e_week_view_main_item_set_property;

    item_class = GNOME_CANVAS_ITEM_CLASS (class);
    item_class->update = e_week_view_main_item_update;
    item_class->draw = e_week_view_main_item_draw;
    item_class->point = e_week_view_main_item_point;

    g_object_class_install_property (
        object_class,
        PROP_WEEK_VIEW,
        g_param_spec_pointer (
            "week_view",
            NULL,
            NULL,
            G_PARAM_WRITABLE));

    /* init the accessibility support for e_week_view_main_item */
    e_week_view_main_item_a11y_init ();
}


static void
e_week_view_main_item_init (EWeekViewMainItem *wvmitem)
{
    wvmitem->week_view = NULL;
}


static void
e_week_view_main_item_set_property (GObject *object,
                                    guint property_id,
                                    const GValue *value,
                                    GParamSpec *pspec)
{
    EWeekViewMainItem *wvmitem;

    wvmitem = E_WEEK_VIEW_MAIN_ITEM (object);

    switch (property_id) {
    case PROP_WEEK_VIEW:
        wvmitem->week_view = g_value_get_pointer (value);
        return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}


static void
e_week_view_main_item_update (GnomeCanvasItem *item,
                  double          *affine,
                  ArtSVP          *clip_path,
                  int          flags)
{
    if (GNOME_CANVAS_ITEM_CLASS (e_week_view_main_item_parent_class)->update)
        (* GNOME_CANVAS_ITEM_CLASS (e_week_view_main_item_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;
}


/*
 * DRAWING ROUTINES - functions to paint the canvas item.
 */
static void
e_week_view_main_item_draw (GnomeCanvasItem  *canvas_item,
                GdkDrawable      *drawable,
                int           x,
                int           y,
                int           width,
                int           height)
{
    EWeekViewMainItem *wvmitem;
    EWeekView *week_view;
    GDate date;
    gint num_days, day, day_x, day_y, day_w, day_h;

#if 0
    g_print ("In e_week_view_main_item_draw %i,%i %ix%i\n",
         x, y, width, height);
#endif

    wvmitem = E_WEEK_VIEW_MAIN_ITEM (canvas_item);
    week_view = wvmitem->week_view;
    g_return_if_fail (week_view != NULL);

    /* Step through each of the days. */
    date = week_view->first_day_shown;

    /* If no date has been set, we just use Dec 1999/January 2000. */
    if (!g_date_valid (&date))
        g_date_set_dmy (&date, 27, 12, 1999);

    num_days = week_view->multi_week_view ? week_view->weeks_shown * 7 : 7;
    for (day = 0; day < num_days; day++) {
        e_week_view_get_day_position (week_view, day,
                          &day_x, &day_y,
                          &day_w, &day_h);
        /* Skip any days which are outside the area. */
        if (day_x < x + width && day_x + day_w >= x
            && day_y < y + height && day_y + day_h >= y) {
            e_week_view_main_item_draw_day (wvmitem, day, &date,
                            drawable,
                            day_x - x, day_y - y,
                            day_w, day_h);
        }
        g_date_add_days (&date, 1);
    }
}

static void
e_week_view_main_item_draw_day (EWeekViewMainItem *wvmitem,
                gint           day,
                GDate         *date,
                GdkDrawable       *drawable,
                gint           x,
                gint           y,
                gint           width,
                gint           height)
{
    EWeekView *week_view;
    GtkStyle *style;
    GdkGC *gc;
    gint right_edge, bottom_edge, date_width, date_x, line_y;
    gboolean show_day_name, show_month_name, selected;
    gchar buffer[128], *format_string;
    gint month, day_of_month, max_width;
    GdkColor *bg_color;
    PangoFontDescription *font_desc;
    PangoContext *pango_context;
    PangoFontMetrics *font_metrics;
    PangoLayout *layout;
    gboolean today = FALSE;
    cairo_t *cr;

#if 0
    g_print ("Drawing Day:%i at %i,%i\n", day, x, y);
#endif
    week_view = wvmitem->week_view;
    style = gtk_widget_get_style (GTK_WIDGET (week_view));
    gc = week_view->main_gc;
    cr = gdk_cairo_create (drawable);

    /* Set up Pango prerequisites */
    font_desc = pango_font_description_copy (style->font_desc);
    pango_context = gtk_widget_get_pango_context (GTK_WIDGET (week_view));
    font_metrics = pango_context_get_metrics (pango_context, font_desc,
                          pango_context_get_language (pango_context));

    g_return_if_fail (gc != NULL);

    month = g_date_get_month (date);
    day_of_month = g_date_get_day (date);
    line_y = y + E_WEEK_VIEW_DATE_T_PAD +
        PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) +
        PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)) +
        E_WEEK_VIEW_DATE_LINE_T_PAD;

    /* Draw the background of the day. In the month view odd months are
       one color and even months another, so you can easily see when each
       month starts (defaults are white for odd - January, March, ... and
       light gray for even). In the week view the background is always the
       same color, the color used for the odd months in the month view. */
    if (week_view->multi_week_view && (month % 2 == 0))
        bg_color = &week_view->colors[E_WEEK_VIEW_COLOR_EVEN_MONTHS];
    else
        bg_color = &week_view->colors[E_WEEK_VIEW_COLOR_ODD_MONTHS];

    cairo_save (cr);
    gdk_cairo_set_source_color (cr, bg_color);
    cairo_rectangle (cr, x, y, width, height);
    cairo_fill (cr);
    cairo_restore (cr);

    /* Draw the lines on the right and bottom of the cell. The canvas is
       sized so that the lines on the right & bottom edges will be off the
       edge of the canvas, so we don't have to worry about them. */
    right_edge = x + width - 1;
    bottom_edge = y + height - 1;

    cairo_save (cr);
    gdk_cairo_set_source_color (cr,  &week_view->colors[E_WEEK_VIEW_COLOR_GRID]);
    cairo_set_line_width (cr, 0.7);
    cairo_move_to (cr, right_edge, y);
    cairo_line_to (cr, right_edge, bottom_edge);
    cairo_move_to (cr, x, bottom_edge);
    cairo_line_to (cr, right_edge, bottom_edge);
    cairo_stroke (cr);
    cairo_restore (cr);

    /* If the day is selected, draw the blue background. */
    cairo_save (cr);
    selected = TRUE;
    if (week_view->selection_start_day == -1
        || week_view->selection_start_day > day
        || week_view->selection_end_day < day)
        selected = FALSE;
    if (selected) {
        if (GTK_WIDGET_HAS_FOCUS (week_view)) {
            gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_SELECTED]);
        } else {
            gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_SELECTED]);
        }

        if (week_view->multi_week_view) {
            cairo_rectangle (cr, x + 2, y + 1,
                        width - 5,
                        E_WEEK_VIEW_DATE_T_PAD - 1 +
                PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) +
                PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)));
            cairo_fill (cr);
        } else {
            cairo_rectangle (cr, x + 2, y + 1,
                    width - 5, line_y - y);
            cairo_fill (cr);
        }
    }
    cairo_restore (cr);

    /* Display the date in the top of the cell.
       In the week view, display the long format "10 January" in all cells,
       or abbreviate it to "10 Jan" or "10" if that doesn't fit.
       In the month view, only use the long format for the first cell and
       the 1st of each month, otherwise use "10". */
    show_day_name = FALSE;
    show_month_name = FALSE;
    if (!week_view->multi_week_view) {
        show_day_name = TRUE;
        show_month_name = TRUE;
    } else if (day == 0 || day_of_month == 1) {
        show_month_name = TRUE;
    }

    /* Now find the longest form of the date that will fit. */
    max_width = width - 4;
    format_string = NULL;
    if (show_day_name) {
        if (week_view->max_day_width + week_view->digit_width * 2
            + week_view->space_width * 2
            + week_view->month_widths[month - 1] < max_width)
            /* strftime format %A = full weekday name, %d = day of
               month, %B = full month name. You can change the
               order but don't change the specifiers or add
               anything. */
            format_string = _("%A %d %B");
        else if (week_view->max_abbr_day_width
             + week_view->digit_width * 2
             + week_view->space_width * 2
             + week_view->abbr_month_widths[month - 1] < max_width)
            /* strftime format %a = abbreviated weekday name,
               %d = day of month, %b = abbreviated month name.
               You can change the order but don't change the
               specifiers or add anything. */
            format_string = _("%a %d %b");
    }
    if (!format_string && show_month_name) {
        if (week_view->digit_width * 2 + week_view->space_width
            + week_view->month_widths[month - 1] < max_width)
            /* strftime format %d = day of month, %B = full
               month name. You can change the order but don't
               change the specifiers or add anything. */
            format_string = _("%d %B");
        else if (week_view->digit_width * 2 + week_view->space_width
            + week_view->abbr_month_widths[month - 1] < max_width)
            /* strftime format %d = day of month, %b = abbreviated
               month name. You can change the order but don't
               change the specifiers or add anything. */
            format_string = _("%d %b");
    }

    cairo_save (cr);
    if (selected) {
        gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_DATES_SELECTED]);
    } else if (week_view->multi_week_view) {
        struct icaltimetype tt;

        /* Check if we are drawing today */
        tt = icaltime_from_timet_with_zone (time (NULL), FALSE,
                            e_calendar_view_get_timezone (E_CALENDAR_VIEW (week_view)));
        if (g_date_get_year (date) == tt.year
            && g_date_get_month (date) == tt.month
            && g_date_get_day (date) == tt.day) {
            gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_TODAY]);
            today = TRUE;
        }
        else {
            gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_DATES]);

            }
    } else {
        gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_DATES]);
    }

    if (today) {
        g_date_strftime (buffer, sizeof (buffer),
                 format_string ? format_string : "<b>%d</b>", date);
        pango_cairo_update_context (cr, pango_context);
        layout = pango_cairo_create_layout (cr);
        pango_layout_set_font_description (layout, font_desc);
        pango_layout_set_text (layout, buffer, -1);
        pango_layout_set_markup (layout, buffer, strlen(buffer));
    } else {
        g_date_strftime (buffer, sizeof (buffer),
                 format_string ? format_string : "%d", date);
        pango_cairo_update_context (cr, pango_context);
        layout = pango_cairo_create_layout (cr);
        pango_layout_set_font_description (layout, font_desc);
        pango_layout_set_text (layout, buffer, -1);
    }

    pango_layout_get_pixel_size (layout, &date_width, NULL);
    date_x = x + width - date_width - E_WEEK_VIEW_DATE_R_PAD;
    date_x = MAX (date_x, x + 1);

    cairo_translate (cr, date_x, y + E_WEEK_VIEW_DATE_T_PAD);
    pango_cairo_update_layout (cr, layout);
    pango_cairo_show_layout (cr, layout);
    cairo_restore (cr);
    g_object_unref (layout);

    /* Draw the line under the date. */
    if (!week_view->multi_week_view) {
        cairo_save (cr);
        gdk_cairo_set_source_color (cr, &week_view->colors[E_WEEK_VIEW_COLOR_GRID]);
        cairo_set_line_width (cr, 0.7);
        cairo_move_to (cr, x + E_WEEK_VIEW_DATE_LINE_L_PAD, line_y);
        cairo_line_to (cr, right_edge, line_y);
        cairo_stroke (cr);
        cairo_restore (cr);
    }
    pango_font_metrics_unref (font_metrics);
    pango_font_description_free (font_desc);
    cairo_destroy (cr);
}

/* This is supposed to return the nearest item the the point and the distance.
   Since we are the only item we just return ourself and 0 for the distance.
   This is needed so that we get button/motion events. */
static double
e_week_view_main_item_point (GnomeCanvasItem *item, double x, double y,
                 int cx, int cy,
                 GnomeCanvasItem **actual_item)
{
    *actual_item = item;
    return 0.0;
}